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-rw-r--r--visualize/static/d3.geom.js835
-rw-r--r--visualize/static/d3.geom.min.js1
-rw-r--r--visualize/static/d3.js4676
-rw-r--r--visualize/static/d3.layout.js1891
-rw-r--r--visualize/static/d3.layout.min.js1
-rw-r--r--visualize/static/d3.min.js2
-rw-r--r--visualize/static/visualize.js253
7 files changed, 7659 insertions, 0 deletions
diff --git a/visualize/static/d3.geom.js b/visualize/static/d3.geom.js
new file mode 100644
index 0000000..d860c2b
--- /dev/null
+++ b/visualize/static/d3.geom.js
@@ -0,0 +1,835 @@
+(function(){d3.geom = {};
+/**
+ * Computes a contour for a given input grid function using the <a
+ * href="http://en.wikipedia.org/wiki/Marching_squares">marching
+ * squares</a> algorithm. Returns the contour polygon as an array of points.
+ *
+ * @param grid a two-input function(x, y) that returns true for values
+ * inside the contour and false for values outside the contour.
+ * @param start an optional starting point [x, y] on the grid.
+ * @returns polygon [[x1, y1], [x2, y2], …]
+ */
+d3.geom.contour = function(grid, start) {
+ var s = start || d3_geom_contourStart(grid), // starting point
+ c = [], // contour polygon
+ x = s[0], // current x position
+ y = s[1], // current y position
+ dx = 0, // next x direction
+ dy = 0, // next y direction
+ pdx = NaN, // previous x direction
+ pdy = NaN, // previous y direction
+ i = 0;
+
+ do {
+ // determine marching squares index
+ i = 0;
+ if (grid(x-1, y-1)) i += 1;
+ if (grid(x, y-1)) i += 2;
+ if (grid(x-1, y )) i += 4;
+ if (grid(x, y )) i += 8;
+
+ // determine next direction
+ if (i === 6) {
+ dx = pdy === -1 ? -1 : 1;
+ dy = 0;
+ } else if (i === 9) {
+ dx = 0;
+ dy = pdx === 1 ? -1 : 1;
+ } else {
+ dx = d3_geom_contourDx[i];
+ dy = d3_geom_contourDy[i];
+ }
+
+ // update contour polygon
+ if (dx != pdx && dy != pdy) {
+ c.push([x, y]);
+ pdx = dx;
+ pdy = dy;
+ }
+
+ x += dx;
+ y += dy;
+ } while (s[0] != x || s[1] != y);
+
+ return c;
+};
+
+// lookup tables for marching directions
+var d3_geom_contourDx = [1, 0, 1, 1,-1, 0,-1, 1,0, 0,0,0,-1, 0,-1,NaN],
+ d3_geom_contourDy = [0,-1, 0, 0, 0,-1, 0, 0,1,-1,1,1, 0,-1, 0,NaN];
+
+function d3_geom_contourStart(grid) {
+ var x = 0,
+ y = 0;
+
+ // search for a starting point; begin at origin
+ // and proceed along outward-expanding diagonals
+ while (true) {
+ if (grid(x,y)) {
+ return [x,y];
+ }
+ if (x === 0) {
+ x = y + 1;
+ y = 0;
+ } else {
+ x = x - 1;
+ y = y + 1;
+ }
+ }
+}
+/**
+ * Computes the 2D convex hull of a set of points using Graham's scanning
+ * algorithm. The algorithm has been implemented as described in Cormen,
+ * Leiserson, and Rivest's Introduction to Algorithms. The running time of
+ * this algorithm is O(n log n), where n is the number of input points.
+ *
+ * @param vertices [[x1, y1], [x2, y2], …]
+ * @returns polygon [[x1, y1], [x2, y2], …]
+ */
+d3.geom.hull = function(vertices) {
+ if (vertices.length < 3) return [];
+
+ var len = vertices.length,
+ plen = len - 1,
+ points = [],
+ stack = [],
+ i, j, h = 0, x1, y1, x2, y2, u, v, a, sp;
+
+ // find the starting ref point: leftmost point with the minimum y coord
+ for (i=1; i<len; ++i) {
+ if (vertices[i][1] < vertices[h][1]) {
+ h = i;
+ } else if (vertices[i][1] == vertices[h][1]) {
+ h = (vertices[i][0] < vertices[h][0] ? i : h);
+ }
+ }
+
+ // calculate polar angles from ref point and sort
+ for (i=0; i<len; ++i) {
+ if (i === h) continue;
+ y1 = vertices[i][1] - vertices[h][1];
+ x1 = vertices[i][0] - vertices[h][0];
+ points.push({angle: Math.atan2(y1, x1), index: i});
+ }
+ points.sort(function(a, b) { return a.angle - b.angle; });
+
+ // toss out duplicate angles
+ a = points[0].angle;
+ v = points[0].index;
+ u = 0;
+ for (i=1; i<plen; ++i) {
+ j = points[i].index;
+ if (a == points[i].angle) {
+ // keep angle for point most distant from the reference
+ x1 = vertices[v][0] - vertices[h][0];
+ y1 = vertices[v][1] - vertices[h][1];
+ x2 = vertices[j][0] - vertices[h][0];
+ y2 = vertices[j][1] - vertices[h][1];
+ if ((x1*x1 + y1*y1) >= (x2*x2 + y2*y2)) {
+ points[i].index = -1;
+ } else {
+ points[u].index = -1;
+ a = points[i].angle;
+ u = i;
+ v = j;
+ }
+ } else {
+ a = points[i].angle;
+ u = i;
+ v = j;
+ }
+ }
+
+ // initialize the stack
+ stack.push(h);
+ for (i=0, j=0; i<2; ++j) {
+ if (points[j].index !== -1) {
+ stack.push(points[j].index);
+ i++;
+ }
+ }
+ sp = stack.length;
+
+ // do graham's scan
+ for (; j<plen; ++j) {
+ if (points[j].index === -1) continue; // skip tossed out points
+ while (!d3_geom_hullCCW(stack[sp-2], stack[sp-1], points[j].index, vertices)) {
+ --sp;
+ }
+ stack[sp++] = points[j].index;
+ }
+
+ // construct the hull
+ var poly = [];
+ for (i=0; i<sp; ++i) {
+ poly.push(vertices[stack[i]]);
+ }
+ return poly;
+}
+
+// are three points in counter-clockwise order?
+function d3_geom_hullCCW(i1, i2, i3, v) {
+ var t, a, b, c, d, e, f;
+ t = v[i1]; a = t[0]; b = t[1];
+ t = v[i2]; c = t[0]; d = t[1];
+ t = v[i3]; e = t[0]; f = t[1];
+ return ((f-b)*(c-a) - (d-b)*(e-a)) > 0;
+}
+// Note: requires coordinates to be counterclockwise and convex!
+d3.geom.polygon = function(coordinates) {
+
+ coordinates.area = function() {
+ var i = 0,
+ n = coordinates.length,
+ a = coordinates[n - 1][0] * coordinates[0][1],
+ b = coordinates[n - 1][1] * coordinates[0][0];
+ while (++i < n) {
+ a += coordinates[i - 1][0] * coordinates[i][1];
+ b += coordinates[i - 1][1] * coordinates[i][0];
+ }
+ return (b - a) * .5;
+ };
+
+ coordinates.centroid = function(k) {
+ var i = -1,
+ n = coordinates.length - 1,
+ x = 0,
+ y = 0,
+ a,
+ b,
+ c;
+ if (!arguments.length) k = -1 / (6 * coordinates.area());
+ while (++i < n) {
+ a = coordinates[i];
+ b = coordinates[i + 1];
+ c = a[0] * b[1] - b[0] * a[1];
+ x += (a[0] + b[0]) * c;
+ y += (a[1] + b[1]) * c;
+ }
+ return [x * k, y * k];
+ };
+
+ // The Sutherland-Hodgman clipping algorithm.
+ coordinates.clip = function(subject) {
+ var input,
+ i = -1,
+ n = coordinates.length,
+ j,
+ m,
+ a = coordinates[n - 1],
+ b,
+ c,
+ d;
+ while (++i < n) {
+ input = subject.slice();
+ subject.length = 0;
+ b = coordinates[i];
+ c = input[(m = input.length) - 1];
+ j = -1;
+ while (++j < m) {
+ d = input[j];
+ if (d3_geom_polygonInside(d, a, b)) {
+ if (!d3_geom_polygonInside(c, a, b)) {
+ subject.push(d3_geom_polygonIntersect(c, d, a, b));
+ }
+ subject.push(d);
+ } else if (d3_geom_polygonInside(c, a, b)) {
+ subject.push(d3_geom_polygonIntersect(c, d, a, b));
+ }
+ c = d;
+ }
+ a = b;
+ }
+ return subject;
+ };
+
+ return coordinates;
+};
+
+function d3_geom_polygonInside(p, a, b) {
+ return (b[0] - a[0]) * (p[1] - a[1]) < (b[1] - a[1]) * (p[0] - a[0]);
+}
+
+// Intersect two infinite lines cd and ab.
+function d3_geom_polygonIntersect(c, d, a, b) {
+ var x1 = c[0], x2 = d[0], x3 = a[0], x4 = b[0],
+ y1 = c[1], y2 = d[1], y3 = a[1], y4 = b[1],
+ x13 = x1 - x3,
+ x21 = x2 - x1,
+ x43 = x4 - x3,
+ y13 = y1 - y3,
+ y21 = y2 - y1,
+ y43 = y4 - y3,
+ ua = (x43 * y13 - y43 * x13) / (y43 * x21 - x43 * y21);
+ return [x1 + ua * x21, y1 + ua * y21];
+}
+// Adapted from Nicolas Garcia Belmonte's JIT implementation:
+// http://blog.thejit.org/2010/02/12/voronoi-tessellation/
+// http://blog.thejit.org/assets/voronoijs/voronoi.js
+// See lib/jit/LICENSE for details.
+
+// Notes:
+//
+// This implementation does not clip the returned polygons, so if you want to
+// clip them to a particular shape you will need to do that either in SVG or by
+// post-processing with d3.geom.polygon's clip method.
+//
+// If any vertices are coincident or have NaN positions, the behavior of this
+// method is undefined. Most likely invalid polygons will be returned. You
+// should filter invalid points, and consolidate coincident points, before
+// computing the tessellation.
+
+/**
+ * @param vertices [[x1, y1], [x2, y2], …]
+ * @returns polygons [[[x1, y1], [x2, y2], …], …]
+ */
+d3.geom.voronoi = function(vertices) {
+ var polygons = vertices.map(function() { return []; });
+
+ d3_voronoi_tessellate(vertices, function(e) {
+ var s1,
+ s2,
+ x1,
+ x2,
+ y1,
+ y2;
+ if (e.a === 1 && e.b >= 0) {
+ s1 = e.ep.r;
+ s2 = e.ep.l;
+ } else {
+ s1 = e.ep.l;
+ s2 = e.ep.r;
+ }
+ if (e.a === 1) {
+ y1 = s1 ? s1.y : -1e6;
+ x1 = e.c - e.b * y1;
+ y2 = s2 ? s2.y : 1e6;
+ x2 = e.c - e.b * y2;
+ } else {
+ x1 = s1 ? s1.x : -1e6;
+ y1 = e.c - e.a * x1;
+ x2 = s2 ? s2.x : 1e6;
+ y2 = e.c - e.a * x2;
+ }
+ var v1 = [x1, y1],
+ v2 = [x2, y2];
+ polygons[e.region.l.index].push(v1, v2);
+ polygons[e.region.r.index].push(v1, v2);
+ });
+
+ // Reconnect the polygon segments into counterclockwise loops.
+ return polygons.map(function(polygon, i) {
+ var cx = vertices[i][0],
+ cy = vertices[i][1];
+ polygon.forEach(function(v) {
+ v.angle = Math.atan2(v[0] - cx, v[1] - cy);
+ });
+ return polygon.sort(function(a, b) {
+ return a.angle - b.angle;
+ }).filter(function(d, i) {
+ return !i || (d.angle - polygon[i - 1].angle > 1e-10);
+ });
+ });
+};
+
+var d3_voronoi_opposite = {"l": "r", "r": "l"};
+
+function d3_voronoi_tessellate(vertices, callback) {
+
+ var Sites = {
+ list: vertices
+ .map(function(v, i) {
+ return {
+ index: i,
+ x: v[0],
+ y: v[1]
+ };
+ })
+ .sort(function(a, b) {
+ return a.y < b.y ? -1
+ : a.y > b.y ? 1
+ : a.x < b.x ? -1
+ : a.x > b.x ? 1
+ : 0;
+ }),
+ bottomSite: null
+ };
+
+ var EdgeList = {
+ list: [],
+ leftEnd: null,
+ rightEnd: null,
+
+ init: function() {
+ EdgeList.leftEnd = EdgeList.createHalfEdge(null, "l");
+ EdgeList.rightEnd = EdgeList.createHalfEdge(null, "l");
+ EdgeList.leftEnd.r = EdgeList.rightEnd;
+ EdgeList.rightEnd.l = EdgeList.leftEnd;
+ EdgeList.list.unshift(EdgeList.leftEnd, EdgeList.rightEnd);
+ },
+
+ createHalfEdge: function(edge, side) {
+ return {
+ edge: edge,
+ side: side,
+ vertex: null,
+ "l": null,
+ "r": null
+ };
+ },
+
+ insert: function(lb, he) {
+ he.l = lb;
+ he.r = lb.r;
+ lb.r.l = he;
+ lb.r = he;
+ },
+
+ leftBound: function(p) {
+ var he = EdgeList.leftEnd;
+ do {
+ he = he.r;
+ } while (he != EdgeList.rightEnd && Geom.rightOf(he, p));
+ he = he.l;
+ return he;
+ },
+
+ del: function(he) {
+ he.l.r = he.r;
+ he.r.l = he.l;
+ he.edge = null;
+ },
+
+ right: function(he) {
+ return he.r;
+ },
+
+ left: function(he) {
+ return he.l;
+ },
+
+ leftRegion: function(he) {
+ return he.edge == null
+ ? Sites.bottomSite
+ : he.edge.region[he.side];
+ },
+
+ rightRegion: function(he) {
+ return he.edge == null
+ ? Sites.bottomSite
+ : he.edge.region[d3_voronoi_opposite[he.side]];
+ }
+ };
+
+ var Geom = {
+
+ bisect: function(s1, s2) {
+ var newEdge = {
+ region: {"l": s1, "r": s2},
+ ep: {"l": null, "r": null}
+ };
+
+ var dx = s2.x - s1.x,
+ dy = s2.y - s1.y,
+ adx = dx > 0 ? dx : -dx,
+ ady = dy > 0 ? dy : -dy;
+
+ newEdge.c = s1.x * dx + s1.y * dy
+ + (dx * dx + dy * dy) * .5;
+
+ if (adx > ady) {
+ newEdge.a = 1;
+ newEdge.b = dy / dx;
+ newEdge.c /= dx;
+ } else {
+ newEdge.b = 1;
+ newEdge.a = dx / dy;
+ newEdge.c /= dy;
+ }
+
+ return newEdge;
+ },
+
+ intersect: function(el1, el2) {
+ var e1 = el1.edge,
+ e2 = el2.edge;
+ if (!e1 || !e2 || (e1.region.r == e2.region.r)) {
+ return null;
+ }
+ var d = (e1.a * e2.b) - (e1.b * e2.a);
+ if (Math.abs(d) < 1e-10) {
+ return null;
+ }
+ var xint = (e1.c * e2.b - e2.c * e1.b) / d,
+ yint = (e2.c * e1.a - e1.c * e2.a) / d,
+ e1r = e1.region.r,
+ e2r = e2.region.r,
+ el,
+ e;
+ if ((e1r.y < e2r.y) ||
+ (e1r.y == e2r.y && e1r.x < e2r.x)) {
+ el = el1;
+ e = e1;
+ } else {
+ el = el2;
+ e = e2;
+ }
+ var rightOfSite = (xint >= e.region.r.x);
+ if ((rightOfSite && (el.side === "l")) ||
+ (!rightOfSite && (el.side === "r"))) {
+ return null;
+ }
+ return {
+ x: xint,
+ y: yint
+ };
+ },
+
+ rightOf: function(he, p) {
+ var e = he.edge,
+ topsite = e.region.r,
+ rightOfSite = (p.x > topsite.x);
+
+ if (rightOfSite && (he.side === "l")) {
+ return 1;
+ }
+ if (!rightOfSite && (he.side === "r")) {
+ return 0;
+ }
+ if (e.a === 1) {
+ var dyp = p.y - topsite.y,
+ dxp = p.x - topsite.x,
+ fast = 0,
+ above = 0;
+
+ if ((!rightOfSite && (e.b < 0)) ||
+ (rightOfSite && (e.b >= 0))) {
+ above = fast = (dyp >= e.b * dxp);
+ } else {
+ above = ((p.x + p.y * e.b) > e.c);
+ if (e.b < 0) {
+ above = !above;
+ }
+ if (!above) {
+ fast = 1;
+ }
+ }
+ if (!fast) {
+ var dxs = topsite.x - e.region.l.x;
+ above = (e.b * (dxp * dxp - dyp * dyp)) <
+ (dxs * dyp * (1 + 2 * dxp / dxs + e.b * e.b));
+
+ if (e.b < 0) {
+ above = !above;
+ }
+ }
+ } else /* e.b == 1 */ {
+ var yl = e.c - e.a * p.x,
+ t1 = p.y - yl,
+ t2 = p.x - topsite.x,
+ t3 = yl - topsite.y;
+
+ above = (t1 * t1) > (t2 * t2 + t3 * t3);
+ }
+ return he.side === "l" ? above : !above;
+ },
+
+ endPoint: function(edge, side, site) {
+ edge.ep[side] = site;
+ if (!edge.ep[d3_voronoi_opposite[side]]) return;
+ callback(edge);
+ },
+
+ distance: function(s, t) {
+ var dx = s.x - t.x,
+ dy = s.y - t.y;
+ return Math.sqrt(dx * dx + dy * dy);
+ }
+ };
+
+ var EventQueue = {
+ list: [],
+
+ insert: function(he, site, offset) {
+ he.vertex = site;
+ he.ystar = site.y + offset;
+ for (var i=0, list=EventQueue.list, l=list.length; i<l; i++) {
+ var next = list[i];
+ if (he.ystar > next.ystar ||
+ (he.ystar == next.ystar &&
+ site.x > next.vertex.x)) {
+ continue;
+ } else {
+ break;
+ }
+ }
+ list.splice(i, 0, he);
+ },
+
+ del: function(he) {
+ for (var i=0, ls=EventQueue.list, l=ls.length; i<l && (ls[i] != he); ++i) {}
+ ls.splice(i, 1);
+ },
+
+ empty: function() { return EventQueue.list.length === 0; },
+
+ nextEvent: function(he) {
+ for (var i=0, ls=EventQueue.list, l=ls.length; i<l; ++i) {
+ if (ls[i] == he) return ls[i+1];
+ }
+ return null;
+ },
+
+ min: function() {
+ var elem = EventQueue.list[0];
+ return {
+ x: elem.vertex.x,
+ y: elem.ystar
+ };
+ },
+
+ extractMin: function() {
+ return EventQueue.list.shift();
+ }
+ };
+
+ EdgeList.init();
+ Sites.bottomSite = Sites.list.shift();
+
+ var newSite = Sites.list.shift(), newIntStar;
+ var lbnd, rbnd, llbnd, rrbnd, bisector;
+ var bot, top, temp, p, v;
+ var e, pm;
+
+ while (true) {
+ if (!EventQueue.empty()) {
+ newIntStar = EventQueue.min();
+ }
+ if (newSite && (EventQueue.empty()
+ || newSite.y < newIntStar.y
+ || (newSite.y == newIntStar.y
+ && newSite.x < newIntStar.x))) { //new site is smallest
+ lbnd = EdgeList.leftBound(newSite);
+ rbnd = EdgeList.right(lbnd);
+ bot = EdgeList.rightRegion(lbnd);
+ e = Geom.bisect(bot, newSite);
+ bisector = EdgeList.createHalfEdge(e, "l");
+ EdgeList.insert(lbnd, bisector);
+ p = Geom.intersect(lbnd, bisector);
+ if (p) {
+ EventQueue.del(lbnd);
+ EventQueue.insert(lbnd, p, Geom.distance(p, newSite));
+ }
+ lbnd = bisector;
+ bisector = EdgeList.createHalfEdge(e, "r");
+ EdgeList.insert(lbnd, bisector);
+ p = Geom.intersect(bisector, rbnd);
+ if (p) {
+ EventQueue.insert(bisector, p, Geom.distance(p, newSite));
+ }
+ newSite = Sites.list.shift();
+ } else if (!EventQueue.empty()) { //intersection is smallest
+ lbnd = EventQueue.extractMin();
+ llbnd = EdgeList.left(lbnd);
+ rbnd = EdgeList.right(lbnd);
+ rrbnd = EdgeList.right(rbnd);
+ bot = EdgeList.leftRegion(lbnd);
+ top = EdgeList.rightRegion(rbnd);
+ v = lbnd.vertex;
+ Geom.endPoint(lbnd.edge, lbnd.side, v);
+ Geom.endPoint(rbnd.edge, rbnd.side, v);
+ EdgeList.del(lbnd);
+ EventQueue.del(rbnd);
+ EdgeList.del(rbnd);
+ pm = "l";
+ if (bot.y > top.y) {
+ temp = bot;
+ bot = top;
+ top = temp;
+ pm = "r";
+ }
+ e = Geom.bisect(bot, top);
+ bisector = EdgeList.createHalfEdge(e, pm);
+ EdgeList.insert(llbnd, bisector);
+ Geom.endPoint(e, d3_voronoi_opposite[pm], v);
+ p = Geom.intersect(llbnd, bisector);
+ if (p) {
+ EventQueue.del(llbnd);
+ EventQueue.insert(llbnd, p, Geom.distance(p, bot));
+ }
+ p = Geom.intersect(bisector, rrbnd);
+ if (p) {
+ EventQueue.insert(bisector, p, Geom.distance(p, bot));
+ }
+ } else {
+ break;
+ }
+ }//end while
+
+ for (lbnd = EdgeList.right(EdgeList.leftEnd);
+ lbnd != EdgeList.rightEnd;
+ lbnd = EdgeList.right(lbnd)) {
+ callback(lbnd.edge);
+ }
+}
+/**
+* @param vertices [[x1, y1], [x2, y2], …]
+* @returns triangles [[[x1, y1], [x2, y2], [x3, y3]], …]
+ */
+d3.geom.delaunay = function(vertices) {
+ var edges = vertices.map(function() { return []; }),
+ triangles = [];
+
+ // Use the Voronoi tessellation to determine Delaunay edges.
+ d3_voronoi_tessellate(vertices, function(e) {
+ edges[e.region.l.index].push(vertices[e.region.r.index]);
+ });
+
+ // Reconnect the edges into counterclockwise triangles.
+ edges.forEach(function(edge, i) {
+ var v = vertices[i],
+ cx = v[0],
+ cy = v[1];
+ edge.forEach(function(v) {
+ v.angle = Math.atan2(v[0] - cx, v[1] - cy);
+ });
+ edge.sort(function(a, b) {
+ return a.angle - b.angle;
+ });
+ for (var j = 0, m = edge.length - 1; j < m; j++) {
+ triangles.push([v, edge[j], edge[j + 1]]);
+ }
+ });
+
+ return triangles;
+};
+// Constructs a new quadtree for the specified array of points. A quadtree is a
+// two-dimensional recursive spatial subdivision. This implementation uses
+// square partitions, dividing each square into four equally-sized squares. Each
+// point exists in a unique node; if multiple points are in the same position,
+// some points may be stored on internal nodes rather than leaf nodes. Quadtrees
+// can be used to accelerate various spatial operations, such as the Barnes-Hut
+// approximation for computing n-body forces, or collision detection.
+d3.geom.quadtree = function(points, x1, y1, x2, y2) {
+ var p,
+ i = -1,
+ n = points.length;
+
+ // Type conversion for deprecated API.
+ if (n && isNaN(points[0].x)) points = points.map(d3_geom_quadtreePoint);
+
+ // Allow bounds to be specified explicitly.
+ if (arguments.length < 5) {
+ if (arguments.length === 3) {
+ y2 = x2 = y1;
+ y1 = x1;
+ } else {
+ x1 = y1 = Infinity;
+ x2 = y2 = -Infinity;
+
+ // Compute bounds.
+ while (++i < n) {
+ p = points[i];
+ if (p.x < x1) x1 = p.x;
+ if (p.y < y1) y1 = p.y;
+ if (p.x > x2) x2 = p.x;
+ if (p.y > y2) y2 = p.y;
+ }
+
+ // Squarify the bounds.
+ var dx = x2 - x1,
+ dy = y2 - y1;
+ if (dx > dy) y2 = y1 + dx;
+ else x2 = x1 + dy;
+ }
+ }
+
+ // Recursively inserts the specified point p at the node n or one of its
+ // descendants. The bounds are defined by [x1, x2] and [y1, y2].
+ function insert(n, p, x1, y1, x2, y2) {
+ if (isNaN(p.x) || isNaN(p.y)) return; // ignore invalid points
+ if (n.leaf) {
+ var v = n.point;
+ if (v) {
+ // If the point at this leaf node is at the same position as the new
+ // point we are adding, we leave the point associated with the
+ // internal node while adding the new point to a child node. This
+ // avoids infinite recursion.
+ if ((Math.abs(v.x - p.x) + Math.abs(v.y - p.y)) < .01) {
+ insertChild(n, p, x1, y1, x2, y2);
+ } else {
+ n.point = null;
+ insertChild(n, v, x1, y1, x2, y2);
+ insertChild(n, p, x1, y1, x2, y2);
+ }
+ } else {
+ n.point = p;
+ }
+ } else {
+ insertChild(n, p, x1, y1, x2, y2);
+ }
+ }
+
+ // Recursively inserts the specified point p into a descendant of node n. The
+ // bounds are defined by [x1, x2] and [y1, y2].
+ function insertChild(n, p, x1, y1, x2, y2) {
+ // Compute the split point, and the quadrant in which to insert p.
+ var sx = (x1 + x2) * .5,
+ sy = (y1 + y2) * .5,
+ right = p.x >= sx,
+ bottom = p.y >= sy,
+ i = (bottom << 1) + right;
+
+ // Recursively insert into the child node.
+ n.leaf = false;
+ n = n.nodes[i] || (n.nodes[i] = d3_geom_quadtreeNode());
+
+ // Update the bounds as we recurse.
+ if (right) x1 = sx; else x2 = sx;
+ if (bottom) y1 = sy; else y2 = sy;
+ insert(n, p, x1, y1, x2, y2);
+ }
+
+ // Create the root node.
+ var root = d3_geom_quadtreeNode();
+
+ root.add = function(p) {
+ insert(root, p, x1, y1, x2, y2);
+ };
+
+ root.visit = function(f) {
+ d3_geom_quadtreeVisit(f, root, x1, y1, x2, y2);
+ };
+
+ // Insert all points.
+ points.forEach(root.add);
+ return root;
+};
+
+function d3_geom_quadtreeNode() {
+ return {
+ leaf: true,
+ nodes: [],
+ point: null
+ };
+}
+
+function d3_geom_quadtreeVisit(f, node, x1, y1, x2, y2) {
+ if (!f(node, x1, y1, x2, y2)) {
+ var sx = (x1 + x2) * .5,
+ sy = (y1 + y2) * .5,
+ children = node.nodes;
+ if (children[0]) d3_geom_quadtreeVisit(f, children[0], x1, y1, sx, sy);
+ if (children[1]) d3_geom_quadtreeVisit(f, children[1], sx, y1, x2, sy);
+ if (children[2]) d3_geom_quadtreeVisit(f, children[2], x1, sy, sx, y2);
+ if (children[3]) d3_geom_quadtreeVisit(f, children[3], sx, sy, x2, y2);
+ }
+}
+
+function d3_geom_quadtreePoint(p) {
+ return {
+ x: p[0],
+ y: p[1]
+ };
+}
+})();
diff --git a/visualize/static/d3.geom.min.js b/visualize/static/d3.geom.min.js
new file mode 100644
index 0000000..2dc6395
--- /dev/null
+++ b/visualize/static/d3.geom.min.js
@@ -0,0 +1 @@
+(function(){function c(a){var b=0,c=0;for(;;){if(a(b,c))return[b,c];b===0?(b=c+1,c=0):(b-=1,c+=1)}}function d(a,b,c,d){var e,f,g,h,i,j,k;return e=d[a],f=e[0],g=e[1],e=d[b],h=e[0],i=e[1],e=d[c],j=e[0],k=e[1],(k-g)*(h-f)-(i-g)*(j-f)>0}function e(a,b,c){return(c[0]-b[0])*(a[1]-b[1])<(c[1]-b[1])*(a[0]-b[0])}function f(a,b,c,d){var e=a[0],f=b[0],g=c[0],h=d[0],i=a[1],j=b[1],k=c[1],l=d[1],m=e-g,n=f-e,o=h-g,p=i-k,q=j-i,r=l-k,s=(o*p-r*m)/(r*n-o*q);return[e+s*n,i+s*q]}function h(a,b){var c={list:a.map(function(a,b){return{index:b,x:a[0],y:a[1]}}).sort(function(a,b){return a.y<b.y?-1:a.y>b.y?1:a.x<b.x?-1:a.x>b.x?1:0}),bottomSite:null},d={list:[],leftEnd:null,rightEnd:null,init:function(){d.leftEnd=d.createHalfEdge(null,"l"),d.rightEnd=d.createHalfEdge(null,"l"),d.leftEnd.r=d.rightEnd,d.rightEnd.l=d.leftEnd,d.list.unshift(d.leftEnd,d.rightEnd)},createHalfEdge:function(a,b){return{edge:a,side:b,vertex:null,l:null,r:null}},insert:function(a,b){b.l=a,b.r=a.r,a.r.l=b,a.r=b},leftBound:function(a){var b=d.leftEnd;do b=b.r;while(b!=d.rightEnd&&e.rightOf(b,a));return b=b.l,b},del:function(a){a.l.r=a.r,a.r.l=a.l,a.edge=null},right:function(a){return a.r},left:function(a){return a.l},leftRegion:function(a){return a.edge==null?c.bottomSite:a.edge.region[a.side]},rightRegion:function(a){return a.edge==null?c.bottomSite:a.edge.region[g[a.side]]}},e={bisect:function(a,b){var c={region:{l:a,r:b},ep:{l:null,r:null}},d=b.x-a.x,e=b.y-a.y,f=d>0?d:-d,g=e>0?e:-e;return c.c=a.x*d+a.y*e+(d*d+e*e)*.5,f>g?(c.a=1,c.b=e/d,c.c/=d):(c.b=1,c.a=d/e,c.c/=e),c},intersect:function(a,b){var c=a.edge,d=b.edge;if(!c||!d||c.region.r==d.region.r)return null;var e=c.a*d.b-c.b*d.a;if(Math.abs(e)<1e-10)return null;var f=(c.c*d.b-d.c*c.b)/e,g=(d.c*c.a-c.c*d.a)/e,h=c.region.r,i=d.region.r,j,k;h.y<i.y||h.y==i.y&&h.x<i.x?(j=a,k=c):(j=b,k=d);var l=f>=k.region.r.x;return l&&j.side==="l"||!l&&j.side==="r"?null:{x:f,y:g}},rightOf:function(a,b){var c=a.edge,d=c.region.r,e=b.x>d.x;if(e&&a.side==="l")return 1;if(!e&&a.side==="r")return 0;if(c.a===1){var f=b.y-d.y,g=b.x-d.x,h=0,i=0;!e&&c.b<0||e&&c.b>=0?i=h=f>=c.b*g:(i=b.x+b.y*c.b>c.c,c.b<0&&(i=!i),i||(h=1));if(!h){var j=d.x-c.region.l.x;i=c.b*(g*g-f*f)<j*f*(1+2*g/j+c.b*c.b),c.b<0&&(i=!i)}}else{var k=c.c-c.a*b.x,l=b.y-k,m=b.x-d.x,n=k-d.y;i=l*l>m*m+n*n}return a.side==="l"?i:!i},endPoint:function(a,c,d){a.ep[c]=d;if(!a.ep[g[c]])return;b(a)},distance:function(a,b){var c=a.x-b.x,d=a.y-b.y;return Math.sqrt(c*c+d*d)}},f={list:[],insert:function(a,b,c){a.vertex=b,a.ystar=b.y+c;for(var d=0,e=f.list,g=e.length;d<g;d++){var h=e[d];if(a.ystar>h.ystar||a.ystar==h.ystar&&b.x>h.vertex.x)continue;break}e.splice(d,0,a)},del:function(a){for(var b=0,c=f.list,d=c.length;b<d&&c[b]!=a;++b);c.splice(b,1)},empty:function(){return f.list.length===0},nextEvent:function(a){for(var b=0,c=f.list,d=c.length;b<d;++b)if(c[b]==a)return c[b+1];return null},min:function(){var a=f.list[0];return{x:a.vertex.x,y:a.ystar}},extractMin:function(){return f.list.shift()}};d.init(),c.bottomSite=c.list.shift();var h=c.list.shift(),i,j,k,l,m,n,o,p,q,r,s,t,u;for(;;){f.empty()||(i=f.min());if(h&&(f.empty()||h.y<i.y||h.y==i.y&&h.x<i.x))j=d.leftBound(h),k=d.right(j),o=d.rightRegion(j),t=e.bisect(o,h),n=d.createHalfEdge(t,"l"),d.insert(j,n),r=e.intersect(j,n),r&&(f.del(j),f.insert(j,r,e.distance(r,h))),j=n,n=d.createHalfEdge(t,"r"),d.insert(j,n),r=e.intersect(n,k),r&&f.insert(n,r,e.distance(r,h)),h=c.list.shift();else if(!f.empty())j=f.extractMin(),l=d.left(j),k=d.right(j),m=d.right(k),o=d.leftRegion(j),p=d.rightRegion(k),s=j.vertex,e.endPoint(j.edge,j.side,s),e.endPoint(k.edge,k.side,s),d.del(j),f.del(k),d.del(k),u="l",o.y>p.y&&(q=o,o=p,p=q,u="r"),t=e.bisect(o,p),n=d.createHalfEdge(t,u),d.insert(l,n),e.endPoint(t,g[u],s),r=e.intersect(l,n),r&&(f.del(l),f.insert(l,r,e.distance(r,o))),r=e.intersect(n,m),r&&f.insert(n,r,e.distance(r,o));else break}for(j=d.right(d.leftEnd);j!=d.rightEnd;j=d.right(j))b(j.edge)}function i(){return{leaf:!0,nodes:[],point:null}}function j(a,b,c,d,e,f){if(!a(b,c,d,e,f)){var g=(c+e)*.5,h=(d+f)*.5,i=b.nodes;i[0]&&j(a,i[0],c,d,g,h),i[1]&&j(a,i[1],g,d,e,h),i[2]&&j(a,i[2],c,h,g,f),i[3]&&j(a,i[3],g,h,e,f)}}function k(a){return{x:a[0],y:a[1]}}d3.geom={},d3.geom.contour=function(d,e){var f=e||c(d),g=[],h=f[0],i=f[1],j=0,k=0,l=NaN,m=NaN,n=0;do n=0,d(h-1,i-1)&&(n+=1),d(h,i-1)&&(n+=2),d(h-1,i)&&(n+=4),d(h,i)&&(n+=8),n===6?(j=m===-1?-1:1,k=0):n===9?(j=0,k=l===1?-1:1):(j=a[n],k=b[n]),j!=l&&k!=m&&(g.push([h,i]),l=j,m=k),h+=j,i+=k;while(f[0]!=h||f[1]!=i);return g};var a=[1,0,1,1,-1,0,-1,1,0,0,0,0,-1,0,-1,NaN],b=[0,-1,0,0,0,-1,0,0,1,-1,1,1,0,-1,0,NaN];d3.geom.hull=function(a){if(a.length<3)return[];var b=a.length,c=b-1,e=[],f=[],g,h,i=0,j,k,l,m,n,o,p,q;for(g=1;g<b;++g)a[g][1]<a[i][1]?i=g:a[g][1]==a[i][1]&&(i=a[g][0]<a[i][0]?g:i);for(g=0;g<b;++g){if(g===i)continue;k=a[g][1]-a[i][1],j=a[g][0]-a[i][0],e.push({angle:Math.atan2(k,j),index:g})}e.sort(function(a,b){return a.angle-b.angle}),p=e[0].angle,o=e[0].index,n=0;for(g=1;g<c;++g)h=e[g].index,p==e[g].angle?(j=a[o][0]-a[i][0],k=a[o][1]-a[i][1],l=a[h][0]-a[i][0],m=a[h][1]-a[i][1],j*j+k*k>=l*l+m*m?e[g].index=-1:(e[n].index=-1,p=e[g].angle,n=g,o=h)):(p=e[g].angle,n=g,o=h);f.push(i);for(g=0,h=0;g<2;++h)e[h].index!==-1&&(f.push(e[h].index),g++);q=f.length;for(;h<c;++h){if(e[h].index===-1)continue;while(!d(f[q-2],f[q-1],e[h].index,a))--q;f[q++]=e[h].index}var r=[];for(g=0;g<q;++g)r.push(a[f[g]]);return r},d3.geom.polygon=function(a){return a.area=function(){var b=0,c=a.length,d=a[c-1][0]*a[0][1],e=a[c-1][1]*a[0][0];while(++b<c)d+=a[b-1][0]*a[b][1],e+=a[b-1][1]*a[b][0];return(e-d)*.5},a.centroid=function(b){var c=-1,d=a.length-1,e=0,f=0,g,h,i;arguments.length||(b=-1/(6*a.area()));while(++c<d)g=a[c],h=a[c+1],i=g[0]*h[1]-h[0]*g[1],e+=(g[0]+h[0])*i,f+=(g[1]+h[1])*i;return[e*b,f*b]},a.clip=function(b){var c,d=-1,g=a.length,h,i,j=a[g-1],k,l,m;while(++d<g){c=b.slice(),b.length=0,k=a[d],l=c[(i=c.length)-1],h=-1;while(++h<i)m=c[h],e(m,j,k)?(e(l,j,k)||b.push(f(l,m,j,k)),b.push(m)):e(l,j,k)&&b.push(f(l,m,j,k)),l=m;j=k}return b},a},d3.geom.voronoi=function(a){var b=a.map(function(){return[]});return h(a,function(a){var c,d,e,f,g,h;a.a===1&&a.b>=0?(c=a.ep.r,d=a.ep.l):(c=a.ep.l,d=a.ep.r),a.a===1?(g=c?c.y:-1e6,e=a.c-a.b*g,h=d?d.y:1e6,f=a.c-a.b*h):(e=c?c.x:-1e6,g=a.c-a.a*e,f=d?d.x:1e6,h=a.c-a.a*f);var i=[e,g],j=[f,h];b[a.region.l.index].push(i,j),b[a.region.r.index].push(i,j)}),b.map(function(b,c){var d=a[c][0],e=a[c][1];return b.forEach(function(a){a.angle=Math.atan2(a[0]-d,a[1]-e)}),b.sort(function(a,b){return a.angle-b.angle}).filter(function(a,c){return!c||a.angle-b[c-1].angle>1e-10})})};var g={l:"r",r:"l"};d3.geom.delaunay=function(a){var b=a.map(function(){return[]}),c=[];return h(a,function(c){b[c.region.l.index].push(a[c.region.r.index])}),b.forEach(function(b,d){var e=a[d],f=e[0],g=e[1];b.forEach(function(a){a.angle=Math.atan2(a[0]-f,a[1]-g)}),b.sort(function(a,b){return a.angle-b.angle});for(var h=0,i=b.length-1;h<i;h++)c.push([e,b[h],b[h+1]])}),c},d3.geom.quadtree=function(a,b,c,d,e){function n(a,b,c,d,e,f){if(isNaN(b.x)||isNaN(b.y))return;if(a.leaf){var g=a.point;g?Math.abs(g.x-b.x)+Math.abs(g.y-b.y)<.01?o(a,b,c,d,e,f):(a.point=null,o(a,g,c,d,e,f),o(a,b,c,d,e,f)):a.point=b}else o(a,b,c,d,e,f)}function o(a,b,c,d,e,f){var g=(c+e)*.5,h=(d+f)*.5,j=b.x>=g,k=b.y>=h,l=(k<<1)+j;a.leaf=!1,a=a.nodes[l]||(a.nodes[l]=i()),j?c=g:e=g,k?d=h:f=h,n(a,b,c,d,e,f)}var f,g=-1,h=a.length;h&&isNaN(a[0].x)&&(a=a.map(k));if(arguments.length<5)if(arguments.length===3)e=d=c,c=b;else{b=c=Infinity,d=e=-Infinity;while(++g<h)f=a[g],f.x<b&&(b=f.x),f.y<c&&(c=f.y),f.x>d&&(d=f.x),f.y>e&&(e=f.y);var l=d-b,m=e-c;l>m?e=c+l:d=b+m}var p=i();return p.add=function(a){n(p,a,b,c,d,e)},p.visit=function(a){j(a,p,b,c,d,e)},a.forEach(p.add),p}})(); \ No newline at end of file
diff --git a/visualize/static/d3.js b/visualize/static/d3.js
new file mode 100644
index 0000000..d71f57d
--- /dev/null
+++ b/visualize/static/d3.js
@@ -0,0 +1,4676 @@
+(function(){if (!Date.now) Date.now = function() {
+ return +new Date;
+};
+try {
+ document.createElement("div").style.setProperty("opacity", 0, "");
+} catch (error) {
+ var d3_style_prototype = CSSStyleDeclaration.prototype,
+ d3_style_setProperty = d3_style_prototype.setProperty;
+ d3_style_prototype.setProperty = function(name, value, priority) {
+ d3_style_setProperty.call(this, name, value + "", priority);
+ };
+}
+d3 = {version: "2.6.1"}; // semver
+var d3_array = d3_arraySlice; // conversion for NodeLists
+
+function d3_arrayCopy(pseudoarray) {
+ var i = -1, n = pseudoarray.length, array = [];
+ while (++i < n) array.push(pseudoarray[i]);
+ return array;
+}
+
+function d3_arraySlice(pseudoarray) {
+ return Array.prototype.slice.call(pseudoarray);
+}
+
+try {
+ d3_array(document.documentElement.childNodes)[0].nodeType;
+} catch(e) {
+ d3_array = d3_arrayCopy;
+}
+
+var d3_arraySubclass = [].__proto__?
+
+// Until ECMAScript supports array subclassing, prototype injection works well.
+function(array, prototype) {
+ array.__proto__ = prototype;
+}:
+
+// And if your browser doesn't support __proto__, we'll use direct extension.
+function(array, prototype) {
+ for (var property in prototype) array[property] = prototype[property];
+};
+function d3_this() {
+ return this;
+}
+d3.functor = function(v) {
+ return typeof v === "function" ? v : function() { return v; };
+};
+// Copies a variable number of methods from source to target.
+d3.rebind = function(target, source) {
+ var i = 1, n = arguments.length, method;
+ while (++i < n) target[method = arguments[i]] = d3_rebind(target, source, source[method]);
+ return target;
+};
+
+// Method is assumed to be a standard D3 getter-setter:
+// If passed with no arguments, gets the value.
+// If passed with arguments, sets the value and returns the target.
+function d3_rebind(target, source, method) {
+ return function() {
+ var value = method.apply(source, arguments);
+ return arguments.length ? target : value;
+ };
+}
+d3.ascending = function(a, b) {
+ return a < b ? -1 : a > b ? 1 : a >= b ? 0 : NaN;
+};
+d3.descending = function(a, b) {
+ return b < a ? -1 : b > a ? 1 : b >= a ? 0 : NaN;
+};
+d3.mean = function(array, f) {
+ var n = array.length,
+ a,
+ m = 0,
+ i = -1,
+ j = 0;
+ if (arguments.length === 1) {
+ while (++i < n) if (d3_number(a = array[i])) m += (a - m) / ++j;
+ } else {
+ while (++i < n) if (d3_number(a = f.call(array, array[i], i))) m += (a - m) / ++j;
+ }
+ return j ? m : undefined;
+};
+d3.median = function(array, f) {
+ if (arguments.length > 1) array = array.map(f);
+ array = array.filter(d3_number);
+ return array.length ? d3.quantile(array.sort(d3.ascending), .5) : undefined;
+};
+d3.min = function(array, f) {
+ var i = -1,
+ n = array.length,
+ a,
+ b;
+ if (arguments.length === 1) {
+ while (++i < n && ((a = array[i]) == null || a != a)) a = undefined;
+ while (++i < n) if ((b = array[i]) != null && a > b) a = b;
+ } else {
+ while (++i < n && ((a = f.call(array, array[i], i)) == null || a != a)) a = undefined;
+ while (++i < n) if ((b = f.call(array, array[i], i)) != null && a > b) a = b;
+ }
+ return a;
+};
+d3.max = function(array, f) {
+ var i = -1,
+ n = array.length,
+ a,
+ b;
+ if (arguments.length === 1) {
+ while (++i < n && ((a = array[i]) == null || a != a)) a = undefined;
+ while (++i < n) if ((b = array[i]) != null && b > a) a = b;
+ } else {
+ while (++i < n && ((a = f.call(array, array[i], i)) == null || a != a)) a = undefined;
+ while (++i < n) if ((b = f.call(array, array[i], i)) != null && b > a) a = b;
+ }
+ return a;
+};
+d3.extent = function(array, f) {
+ var i = -1,
+ n = array.length,
+ a,
+ b,
+ c;
+ if (arguments.length === 1) {
+ while (++i < n && ((a = c = array[i]) == null || a != a)) a = c = undefined;
+ while (++i < n) if ((b = array[i]) != null) {
+ if (a > b) a = b;
+ if (c < b) c = b;
+ }
+ } else {
+ while (++i < n && ((a = c = f.call(array, array[i], i)) == null || a != a)) a = undefined;
+ while (++i < n) if ((b = f.call(array, array[i], i)) != null) {
+ if (a > b) a = b;
+ if (c < b) c = b;
+ }
+ }
+ return [a, c];
+};
+d3.random = {
+ normal: function(mean, deviation) {
+ if (arguments.length < 2) deviation = 1;
+ if (arguments.length < 1) mean = 0;
+ return function() {
+ var x, y, r;
+ do {
+ x = Math.random() * 2 - 1;
+ y = Math.random() * 2 - 1;
+ r = x * x + y * y;
+ } while (!r || r > 1);
+ return mean + deviation * x * Math.sqrt(-2 * Math.log(r) / r);
+ };
+ }
+};
+function d3_number(x) {
+ return x != null && !isNaN(x);
+}
+d3.sum = function(array, f) {
+ var s = 0,
+ n = array.length,
+ a,
+ i = -1;
+
+ if (arguments.length === 1) {
+ while (++i < n) if (!isNaN(a = +array[i])) s += a;
+ } else {
+ while (++i < n) if (!isNaN(a = +f.call(array, array[i], i))) s += a;
+ }
+
+ return s;
+};
+// R-7 per <http://en.wikipedia.org/wiki/Quantile>
+d3.quantile = function(values, p) {
+ var H = (values.length - 1) * p + 1,
+ h = Math.floor(H),
+ v = values[h - 1],
+ e = H - h;
+ return e ? v + e * (values[h] - v) : v;
+};
+d3.transpose = function(matrix) {
+ return d3.zip.apply(d3, matrix);
+};
+d3.zip = function() {
+ if (!(n = arguments.length)) return [];
+ for (var i = -1, m = d3.min(arguments, d3_zipLength), zips = new Array(m); ++i < m;) {
+ for (var j = -1, n, zip = zips[i] = new Array(n); ++j < n;) {
+ zip[j] = arguments[j][i];
+ }
+ }
+ return zips;
+};
+
+function d3_zipLength(d) {
+ return d.length;
+}
+// Locate the insertion point for x in a to maintain sorted order. The
+// arguments lo and hi may be used to specify a subset of the array which should
+// be considered; by default the entire array is used. If x is already present
+// in a, the insertion point will be before (to the left of) any existing
+// entries. The return value is suitable for use as the first argument to
+// `array.splice` assuming that a is already sorted.
+//
+// The returned insertion point i partitions the array a into two halves so that
+// all v < x for v in a[lo:i] for the left side and all v >= x for v in a[i:hi]
+// for the right side.
+d3.bisectLeft = function(a, x, lo, hi) {
+ if (arguments.length < 3) lo = 0;
+ if (arguments.length < 4) hi = a.length;
+ while (lo < hi) {
+ var mid = (lo + hi) >> 1;
+ if (a[mid] < x) lo = mid + 1;
+ else hi = mid;
+ }
+ return lo;
+};
+
+// Similar to bisectLeft, but returns an insertion point which comes after (to
+// the right of) any existing entries of x in a.
+//
+// The returned insertion point i partitions the array into two halves so that
+// all v <= x for v in a[lo:i] for the left side and all v > x for v in a[i:hi]
+// for the right side.
+d3.bisect =
+d3.bisectRight = function(a, x, lo, hi) {
+ if (arguments.length < 3) lo = 0;
+ if (arguments.length < 4) hi = a.length;
+ while (lo < hi) {
+ var mid = (lo + hi) >> 1;
+ if (x < a[mid]) hi = mid;
+ else lo = mid + 1;
+ }
+ return lo;
+};
+d3.first = function(array, f) {
+ var i = 0,
+ n = array.length,
+ a = array[0],
+ b;
+ if (arguments.length === 1) f = d3.ascending;
+ while (++i < n) {
+ if (f.call(array, a, b = array[i]) > 0) {
+ a = b;
+ }
+ }
+ return a;
+};
+d3.last = function(array, f) {
+ var i = 0,
+ n = array.length,
+ a = array[0],
+ b;
+ if (arguments.length === 1) f = d3.ascending;
+ while (++i < n) {
+ if (f.call(array, a, b = array[i]) <= 0) {
+ a = b;
+ }
+ }
+ return a;
+};
+d3.nest = function() {
+ var nest = {},
+ keys = [],
+ sortKeys = [],
+ sortValues,
+ rollup;
+
+ function map(array, depth) {
+ if (depth >= keys.length) return rollup
+ ? rollup.call(nest, array) : (sortValues
+ ? array.sort(sortValues)
+ : array);
+
+ var i = -1,
+ n = array.length,
+ key = keys[depth++],
+ keyValue,
+ object,
+ o = {};
+
+ while (++i < n) {
+ if ((keyValue = key(object = array[i])) in o) {
+ o[keyValue].push(object);
+ } else {
+ o[keyValue] = [object];
+ }
+ }
+
+ for (keyValue in o) {
+ o[keyValue] = map(o[keyValue], depth);
+ }
+
+ return o;
+ }
+
+ function entries(map, depth) {
+ if (depth >= keys.length) return map;
+
+ var a = [],
+ sortKey = sortKeys[depth++],
+ key;
+
+ for (key in map) {
+ a.push({key: key, values: entries(map[key], depth)});
+ }
+
+ if (sortKey) a.sort(function(a, b) {
+ return sortKey(a.key, b.key);
+ });
+
+ return a;
+ }
+
+ nest.map = function(array) {
+ return map(array, 0);
+ };
+
+ nest.entries = function(array) {
+ return entries(map(array, 0), 0);
+ };
+
+ nest.key = function(d) {
+ keys.push(d);
+ return nest;
+ };
+
+ // Specifies the order for the most-recently specified key.
+ // Note: only applies to entries. Map keys are unordered!
+ nest.sortKeys = function(order) {
+ sortKeys[keys.length - 1] = order;
+ return nest;
+ };
+
+ // Specifies the order for leaf values.
+ // Applies to both maps and entries array.
+ nest.sortValues = function(order) {
+ sortValues = order;
+ return nest;
+ };
+
+ nest.rollup = function(f) {
+ rollup = f;
+ return nest;
+ };
+
+ return nest;
+};
+d3.keys = function(map) {
+ var keys = [];
+ for (var key in map) keys.push(key);
+ return keys;
+};
+d3.values = function(map) {
+ var values = [];
+ for (var key in map) values.push(map[key]);
+ return values;
+};
+d3.entries = function(map) {
+ var entries = [];
+ for (var key in map) entries.push({key: key, value: map[key]});
+ return entries;
+};
+d3.permute = function(array, indexes) {
+ var permutes = [],
+ i = -1,
+ n = indexes.length;
+ while (++i < n) permutes[i] = array[indexes[i]];
+ return permutes;
+};
+d3.merge = function(arrays) {
+ return Array.prototype.concat.apply([], arrays);
+};
+d3.split = function(array, f) {
+ var arrays = [],
+ values = [],
+ value,
+ i = -1,
+ n = array.length;
+ if (arguments.length < 2) f = d3_splitter;
+ while (++i < n) {
+ if (f.call(values, value = array[i], i)) {
+ values = [];
+ } else {
+ if (!values.length) arrays.push(values);
+ values.push(value);
+ }
+ }
+ return arrays;
+};
+
+function d3_splitter(d) {
+ return d == null;
+}
+function d3_collapse(s) {
+ return s.replace(/(^\s+)|(\s+$)/g, "").replace(/\s+/g, " ");
+}
+/**
+ * @param {number} start
+ * @param {number=} stop
+ * @param {number=} step
+ */
+d3.range = function(start, stop, step) {
+ if (arguments.length < 3) {
+ step = 1;
+ if (arguments.length < 2) {
+ stop = start;
+ start = 0;
+ }
+ }
+ if ((stop - start) / step == Infinity) throw new Error("infinite range");
+ var range = [],
+ i = -1,
+ j;
+ if (step < 0) while ((j = start + step * ++i) > stop) range.push(j);
+ else while ((j = start + step * ++i) < stop) range.push(j);
+ return range;
+};
+d3.requote = function(s) {
+ return s.replace(d3_requote_re, "\\$&");
+};
+
+var d3_requote_re = /[\\\^\$\*\+\?\|\[\]\(\)\.\{\}]/g;
+d3.round = function(x, n) {
+ return n
+ ? Math.round(x * Math.pow(10, n)) * Math.pow(10, -n)
+ : Math.round(x);
+};
+d3.xhr = function(url, mime, callback) {
+ var req = new XMLHttpRequest;
+ if (arguments.length < 3) callback = mime;
+ else if (mime && req.overrideMimeType) req.overrideMimeType(mime);
+ req.open("GET", url, true);
+ req.onreadystatechange = function() {
+ if (req.readyState === 4) callback(req.status < 300 ? req : null);
+ };
+ req.send(null);
+};
+d3.text = function(url, mime, callback) {
+ function ready(req) {
+ callback(req && req.responseText);
+ }
+ if (arguments.length < 3) {
+ callback = mime;
+ mime = null;
+ }
+ d3.xhr(url, mime, ready);
+};
+d3.json = function(url, callback) {
+ d3.text(url, "application/json", function(text) {
+ callback(text ? JSON.parse(text) : null);
+ });
+};
+d3.html = function(url, callback) {
+ d3.text(url, "text/html", function(text) {
+ if (text != null) { // Treat empty string as valid HTML.
+ var range = document.createRange();
+ range.selectNode(document.body);
+ text = range.createContextualFragment(text);
+ }
+ callback(text);
+ });
+};
+d3.xml = function(url, mime, callback) {
+ function ready(req) {
+ callback(req && req.responseXML);
+ }
+ if (arguments.length < 3) {
+ callback = mime;
+ mime = null;
+ }
+ d3.xhr(url, mime, ready);
+};
+var d3_nsPrefix = {
+ svg: "http://www.w3.org/2000/svg",
+ xhtml: "http://www.w3.org/1999/xhtml",
+ xlink: "http://www.w3.org/1999/xlink",
+ xml: "http://www.w3.org/XML/1998/namespace",
+ xmlns: "http://www.w3.org/2000/xmlns/"
+};
+
+d3.ns = {
+ prefix: d3_nsPrefix,
+ qualify: function(name) {
+ var i = name.indexOf(":");
+ return i < 0 ? (name in d3_nsPrefix
+ ? {space: d3_nsPrefix[name], local: name} : name)
+ : {space: d3_nsPrefix[name.substring(0, i)], local: name.substring(i + 1)};
+ }
+};
+d3.dispatch = function() {
+ var dispatch = new d3_dispatch(),
+ i = -1,
+ n = arguments.length;
+ while (++i < n) dispatch[arguments[i]] = d3_dispatch_event();
+ return dispatch;
+};
+
+function d3_dispatch() {}
+
+d3_dispatch.prototype.on = function(type, listener) {
+ var i = type.indexOf("."),
+ name = "";
+
+ // Extract optional namespace, e.g., "click.foo"
+ if (i > 0) {
+ name = type.substring(i + 1);
+ type = type.substring(0, i);
+ }
+
+ return arguments.length < 2
+ ? this[type].on(name)
+ : (this[type].on(name, listener), this);
+};
+
+function d3_dispatch_event() {
+ var listeners = [],
+ listenerByName = {};
+
+ function dispatch() {
+ var z = listeners, // defensive reference
+ i = -1,
+ n = z.length,
+ l;
+ while (++i < n) if (l = z[i].on) l.apply(this, arguments);
+ }
+
+ dispatch.on = function(name, listener) {
+ var l, i;
+
+ // return the current listener, if any
+ if (arguments.length < 2) return (l = listenerByName[name]) && l.on;
+
+ // remove the old listener, if any (with copy-on-write)
+ if (l = listenerByName[name]) {
+ l.on = null;
+ listeners = listeners.slice(0, i = listeners.indexOf(l)).concat(listeners.slice(i + 1));
+ delete listenerByName[name];
+ }
+
+ // add the new listener, if any
+ if (listener) {
+ listeners.push(listenerByName[name] = {on: listener});
+ }
+
+ return dispatch;
+ };
+
+ return dispatch;
+};
+// TODO align
+d3.format = function(specifier) {
+ var match = d3_format_re.exec(specifier),
+ fill = match[1] || " ",
+ sign = match[3] || "",
+ zfill = match[5],
+ width = +match[6],
+ comma = match[7],
+ precision = match[8],
+ type = match[9],
+ scale = 1,
+ suffix = "",
+ integer = false;
+
+ if (precision) precision = +precision.substring(1);
+
+ if (zfill) {
+ fill = "0"; // TODO align = "=";
+ if (comma) width -= Math.floor((width - 1) / 4);
+ }
+
+ switch (type) {
+ case "n": comma = true; type = "g"; break;
+ case "%": scale = 100; suffix = "%"; type = "f"; break;
+ case "p": scale = 100; suffix = "%"; type = "r"; break;
+ case "d": integer = true; precision = 0; break;
+ case "s": scale = -1; type = "r"; break;
+ }
+
+ // If no precision is specified for r, fallback to general notation.
+ if (type == "r" && !precision) type = "g";
+
+ type = d3_format_types[type] || d3_format_typeDefault;
+
+ return function(value) {
+
+ // Return the empty string for floats formatted as ints.
+ if (integer && (value % 1)) return "";
+
+ // Convert negative to positive, and record the sign prefix.
+ var negative = (value < 0) && (value = -value) ? "\u2212" : sign;
+
+ // Apply the scale, computing it from the value's exponent for si format.
+ if (scale < 0) {
+ var prefix = d3.formatPrefix(value, precision);
+ value *= prefix.scale;
+ suffix = prefix.symbol;
+ } else {
+ value *= scale;
+ }
+
+ // Convert to the desired precision.
+ value = type(value, precision);
+
+ // If the fill character is 0, the sign and group is applied after the fill.
+ if (zfill) {
+ var length = value.length + negative.length;
+ if (length < width) value = new Array(width - length + 1).join(fill) + value;
+ if (comma) value = d3_format_group(value);
+ value = negative + value;
+ }
+
+ // Otherwise (e.g., space-filling), the sign and group is applied before.
+ else {
+ if (comma) value = d3_format_group(value);
+ value = negative + value;
+ var length = value.length;
+ if (length < width) value = new Array(width - length + 1).join(fill) + value;
+ }
+
+ return value + suffix;
+ };
+};
+
+// [[fill]align][sign][#][0][width][,][.precision][type]
+var d3_format_re = /(?:([^{])?([<>=^]))?([+\- ])?(#)?(0)?([0-9]+)?(,)?(\.[0-9]+)?([a-zA-Z%])?/;
+
+var d3_format_types = {
+ g: function(x, p) { return x.toPrecision(p); },
+ e: function(x, p) { return x.toExponential(p); },
+ f: function(x, p) { return x.toFixed(p); },
+ r: function(x, p) { return d3.round(x, p = d3_format_precision(x, p)).toFixed(Math.max(0, Math.min(20, p))); }
+};
+
+function d3_format_precision(x, p) {
+ return p - (x ? 1 + Math.floor(Math.log(x + Math.pow(10, 1 + Math.floor(Math.log(x) / Math.LN10) - p)) / Math.LN10) : 1);
+}
+
+function d3_format_typeDefault(x) {
+ return x + "";
+}
+
+// Apply comma grouping for thousands.
+function d3_format_group(value) {
+ var i = value.lastIndexOf("."),
+ f = i >= 0 ? value.substring(i) : (i = value.length, ""),
+ t = [];
+ while (i > 0) t.push(value.substring(i -= 3, i + 3));
+ return t.reverse().join(",") + f;
+}
+var d3_formatPrefixes = ["y","z","a","f","p","n","μ","m","","k","M","G","T","P","E","Z","Y"].map(d3_formatPrefix);
+
+d3.formatPrefix = function(value, precision) {
+ var i = 0;
+ if (value) {
+ if (value < 0) value *= -1;
+ if (precision) value = d3.round(value, d3_format_precision(value, precision));
+ i = 1 + Math.floor(1e-12 + Math.log(value) / Math.LN10);
+ i = Math.max(-24, Math.min(24, Math.floor((i <= 0 ? i + 1 : i - 1) / 3) * 3));
+ }
+ return d3_formatPrefixes[8 + i / 3];
+};
+
+function d3_formatPrefix(d, i) {
+ return {
+ scale: Math.pow(10, (8 - i) * 3),
+ symbol: d
+ };
+}
+
+/*
+ * TERMS OF USE - EASING EQUATIONS
+ *
+ * Open source under the BSD License.
+ *
+ * Copyright 2001 Robert Penner
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * - Neither the name of the author nor the names of contributors may be used to
+ * endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+var d3_ease_quad = d3_ease_poly(2),
+ d3_ease_cubic = d3_ease_poly(3);
+
+var d3_ease = {
+ linear: function() { return d3_ease_linear; },
+ poly: d3_ease_poly,
+ quad: function() { return d3_ease_quad; },
+ cubic: function() { return d3_ease_cubic; },
+ sin: function() { return d3_ease_sin; },
+ exp: function() { return d3_ease_exp; },
+ circle: function() { return d3_ease_circle; },
+ elastic: d3_ease_elastic,
+ back: d3_ease_back,
+ bounce: function() { return d3_ease_bounce; }
+};
+
+var d3_ease_mode = {
+ "in": function(f) { return f; },
+ "out": d3_ease_reverse,
+ "in-out": d3_ease_reflect,
+ "out-in": function(f) { return d3_ease_reflect(d3_ease_reverse(f)); }
+};
+
+d3.ease = function(name) {
+ var i = name.indexOf("-"),
+ t = i >= 0 ? name.substring(0, i) : name,
+ m = i >= 0 ? name.substring(i + 1) : "in";
+ return d3_ease_clamp(d3_ease_mode[m](d3_ease[t].apply(null, Array.prototype.slice.call(arguments, 1))));
+};
+
+function d3_ease_clamp(f) {
+ return function(t) {
+ return t <= 0 ? 0 : t >= 1 ? 1 : f(t);
+ };
+}
+
+function d3_ease_reverse(f) {
+ return function(t) {
+ return 1 - f(1 - t);
+ };
+}
+
+function d3_ease_reflect(f) {
+ return function(t) {
+ return .5 * (t < .5 ? f(2 * t) : (2 - f(2 - 2 * t)));
+ };
+}
+
+function d3_ease_linear(t) {
+ return t;
+}
+
+function d3_ease_poly(e) {
+ return function(t) {
+ return Math.pow(t, e);
+ }
+}
+
+function d3_ease_sin(t) {
+ return 1 - Math.cos(t * Math.PI / 2);
+}
+
+function d3_ease_exp(t) {
+ return Math.pow(2, 10 * (t - 1));
+}
+
+function d3_ease_circle(t) {
+ return 1 - Math.sqrt(1 - t * t);
+}
+
+function d3_ease_elastic(a, p) {
+ var s;
+ if (arguments.length < 2) p = 0.45;
+ if (arguments.length < 1) { a = 1; s = p / 4; }
+ else s = p / (2 * Math.PI) * Math.asin(1 / a);
+ return function(t) {
+ return 1 + a * Math.pow(2, 10 * -t) * Math.sin((t - s) * 2 * Math.PI / p);
+ };
+}
+
+function d3_ease_back(s) {
+ if (!s) s = 1.70158;
+ return function(t) {
+ return t * t * ((s + 1) * t - s);
+ };
+}
+
+function d3_ease_bounce(t) {
+ return t < 1 / 2.75 ? 7.5625 * t * t
+ : t < 2 / 2.75 ? 7.5625 * (t -= 1.5 / 2.75) * t + .75
+ : t < 2.5 / 2.75 ? 7.5625 * (t -= 2.25 / 2.75) * t + .9375
+ : 7.5625 * (t -= 2.625 / 2.75) * t + .984375;
+}
+d3.event = null;
+
+function d3_eventCancel() {
+ d3.event.stopPropagation();
+ d3.event.preventDefault();
+}
+d3.interpolate = function(a, b) {
+ var i = d3.interpolators.length, f;
+ while (--i >= 0 && !(f = d3.interpolators[i](a, b)));
+ return f;
+};
+
+d3.interpolateNumber = function(a, b) {
+ b -= a;
+ return function(t) { return a + b * t; };
+};
+
+d3.interpolateRound = function(a, b) {
+ b -= a;
+ return function(t) { return Math.round(a + b * t); };
+};
+
+d3.interpolateString = function(a, b) {
+ var m, // current match
+ i, // current index
+ j, // current index (for coallescing)
+ s0 = 0, // start index of current string prefix
+ s1 = 0, // end index of current string prefix
+ s = [], // string constants and placeholders
+ q = [], // number interpolators
+ n, // q.length
+ o;
+
+ // Reset our regular expression!
+ d3_interpolate_number.lastIndex = 0;
+
+ // Find all numbers in b.
+ for (i = 0; m = d3_interpolate_number.exec(b); ++i) {
+ if (m.index) s.push(b.substring(s0, s1 = m.index));
+ q.push({i: s.length, x: m[0]});
+ s.push(null);
+ s0 = d3_interpolate_number.lastIndex;
+ }
+ if (s0 < b.length) s.push(b.substring(s0));
+
+ // Find all numbers in a.
+ for (i = 0, n = q.length; (m = d3_interpolate_number.exec(a)) && i < n; ++i) {
+ o = q[i];
+ if (o.x == m[0]) { // The numbers match, so coallesce.
+ if (o.i) {
+ if (s[o.i + 1] == null) { // This match is followed by another number.
+ s[o.i - 1] += o.x;
+ s.splice(o.i, 1);
+ for (j = i + 1; j < n; ++j) q[j].i--;
+ } else { // This match is followed by a string, so coallesce twice.
+ s[o.i - 1] += o.x + s[o.i + 1];
+ s.splice(o.i, 2);
+ for (j = i + 1; j < n; ++j) q[j].i -= 2;
+ }
+ } else {
+ if (s[o.i + 1] == null) { // This match is followed by another number.
+ s[o.i] = o.x;
+ } else { // This match is followed by a string, so coallesce twice.
+ s[o.i] = o.x + s[o.i + 1];
+ s.splice(o.i + 1, 1);
+ for (j = i + 1; j < n; ++j) q[j].i--;
+ }
+ }
+ q.splice(i, 1);
+ n--;
+ i--;
+ } else {
+ o.x = d3.interpolateNumber(parseFloat(m[0]), parseFloat(o.x));
+ }
+ }
+
+ // Remove any numbers in b not found in a.
+ while (i < n) {
+ o = q.pop();
+ if (s[o.i + 1] == null) { // This match is followed by another number.
+ s[o.i] = o.x;
+ } else { // This match is followed by a string, so coallesce twice.
+ s[o.i] = o.x + s[o.i + 1];
+ s.splice(o.i + 1, 1);
+ }
+ n--;
+ }
+
+ // Special optimization for only a single match.
+ if (s.length === 1) {
+ return s[0] == null ? q[0].x : function() { return b; };
+ }
+
+ // Otherwise, interpolate each of the numbers and rejoin the string.
+ return function(t) {
+ for (i = 0; i < n; ++i) s[(o = q[i]).i] = o.x(t);
+ return s.join("");
+ };
+};
+
+d3.interpolateTransform = function(a, b) {
+ return d3.interpolateString(d3.transform(a) + "", d3.transform(b) + "");
+};
+
+d3.interpolateRgb = function(a, b) {
+ a = d3.rgb(a);
+ b = d3.rgb(b);
+ var ar = a.r,
+ ag = a.g,
+ ab = a.b,
+ br = b.r - ar,
+ bg = b.g - ag,
+ bb = b.b - ab;
+ return function(t) {
+ return "#"
+ + d3_rgb_hex(Math.round(ar + br * t))
+ + d3_rgb_hex(Math.round(ag + bg * t))
+ + d3_rgb_hex(Math.round(ab + bb * t));
+ };
+};
+
+// interpolates HSL space, but outputs RGB string (for compatibility)
+d3.interpolateHsl = function(a, b) {
+ a = d3.hsl(a);
+ b = d3.hsl(b);
+ var h0 = a.h,
+ s0 = a.s,
+ l0 = a.l,
+ h1 = b.h - h0,
+ s1 = b.s - s0,
+ l1 = b.l - l0;
+ return function(t) {
+ return d3_hsl_rgb(h0 + h1 * t, s0 + s1 * t, l0 + l1 * t).toString();
+ };
+};
+
+d3.interpolateArray = function(a, b) {
+ var x = [],
+ c = [],
+ na = a.length,
+ nb = b.length,
+ n0 = Math.min(a.length, b.length),
+ i;
+ for (i = 0; i < n0; ++i) x.push(d3.interpolate(a[i], b[i]));
+ for (; i < na; ++i) c[i] = a[i];
+ for (; i < nb; ++i) c[i] = b[i];
+ return function(t) {
+ for (i = 0; i < n0; ++i) c[i] = x[i](t);
+ return c;
+ };
+};
+
+d3.interpolateObject = function(a, b) {
+ var i = {},
+ c = {},
+ k;
+ for (k in a) {
+ if (k in b) {
+ i[k] = d3_interpolateByName(k)(a[k], b[k]);
+ } else {
+ c[k] = a[k];
+ }
+ }
+ for (k in b) {
+ if (!(k in a)) {
+ c[k] = b[k];
+ }
+ }
+ return function(t) {
+ for (k in i) c[k] = i[k](t);
+ return c;
+ };
+}
+
+var d3_interpolate_number = /[-+]?(?:\d*\.?\d+)(?:[eE][-+]?\d+)?/g;
+
+function d3_interpolateByName(n) {
+ return n == "transform"
+ ? d3.interpolateTransform
+ : d3.interpolate;
+}
+
+d3.interpolators = [
+ d3.interpolateObject,
+ function(a, b) { return (b instanceof Array) && d3.interpolateArray(a, b); },
+ function(a, b) { return (typeof a === "string" || typeof b === "string") && d3.interpolateString(a + "", b + ""); },
+ function(a, b) { return (typeof b === "string" ? b in d3_rgb_names || /^(#|rgb\(|hsl\()/.test(b) : b instanceof d3_Rgb || b instanceof d3_Hsl) && d3.interpolateRgb(a, b); },
+ function(a, b) { return !isNaN(a = +a) && !isNaN(b = +b) && d3.interpolateNumber(a, b); }
+];
+function d3_uninterpolateNumber(a, b) {
+ b = b - (a = +a) ? 1 / (b - a) : 0;
+ return function(x) { return (x - a) * b; };
+}
+
+function d3_uninterpolateClamp(a, b) {
+ b = b - (a = +a) ? 1 / (b - a) : 0;
+ return function(x) { return Math.max(0, Math.min(1, (x - a) * b)); };
+}
+d3.rgb = function(r, g, b) {
+ return arguments.length === 1
+ ? (r instanceof d3_Rgb ? d3_rgb(r.r, r.g, r.b)
+ : d3_rgb_parse("" + r, d3_rgb, d3_hsl_rgb))
+ : d3_rgb(~~r, ~~g, ~~b);
+};
+
+function d3_rgb(r, g, b) {
+ return new d3_Rgb(r, g, b);
+}
+
+function d3_Rgb(r, g, b) {
+ this.r = r;
+ this.g = g;
+ this.b = b;
+}
+
+d3_Rgb.prototype.brighter = function(k) {
+ k = Math.pow(0.7, arguments.length ? k : 1);
+ var r = this.r,
+ g = this.g,
+ b = this.b,
+ i = 30;
+ if (!r && !g && !b) return d3_rgb(i, i, i);
+ if (r && r < i) r = i;
+ if (g && g < i) g = i;
+ if (b && b < i) b = i;
+ return d3_rgb(
+ Math.min(255, Math.floor(r / k)),
+ Math.min(255, Math.floor(g / k)),
+ Math.min(255, Math.floor(b / k)));
+};
+
+d3_Rgb.prototype.darker = function(k) {
+ k = Math.pow(0.7, arguments.length ? k : 1);
+ return d3_rgb(
+ Math.floor(k * this.r),
+ Math.floor(k * this.g),
+ Math.floor(k * this.b));
+};
+
+d3_Rgb.prototype.hsl = function() {
+ return d3_rgb_hsl(this.r, this.g, this.b);
+};
+
+d3_Rgb.prototype.toString = function() {
+ return "#" + d3_rgb_hex(this.r) + d3_rgb_hex(this.g) + d3_rgb_hex(this.b);
+};
+
+function d3_rgb_hex(v) {
+ return v < 0x10
+ ? "0" + Math.max(0, v).toString(16)
+ : Math.min(255, v).toString(16);
+}
+
+function d3_rgb_parse(format, rgb, hsl) {
+ var r = 0, // red channel; int in [0, 255]
+ g = 0, // green channel; int in [0, 255]
+ b = 0, // blue channel; int in [0, 255]
+ m1, // CSS color specification match
+ m2, // CSS color specification type (e.g., rgb)
+ name;
+
+ /* Handle hsl, rgb. */
+ m1 = /([a-z]+)\((.*)\)/i.exec(format);
+ if (m1) {
+ m2 = m1[2].split(",");
+ switch (m1[1]) {
+ case "hsl": {
+ return hsl(
+ parseFloat(m2[0]), // degrees
+ parseFloat(m2[1]) / 100, // percentage
+ parseFloat(m2[2]) / 100 // percentage
+ );
+ }
+ case "rgb": {
+ return rgb(
+ d3_rgb_parseNumber(m2[0]),
+ d3_rgb_parseNumber(m2[1]),
+ d3_rgb_parseNumber(m2[2])
+ );
+ }
+ }
+ }
+
+ /* Named colors. */
+ if (name = d3_rgb_names[format]) return rgb(name.r, name.g, name.b);
+
+ /* Hexadecimal colors: #rgb and #rrggbb. */
+ if (format != null && format.charAt(0) === "#") {
+ if (format.length === 4) {
+ r = format.charAt(1); r += r;
+ g = format.charAt(2); g += g;
+ b = format.charAt(3); b += b;
+ } else if (format.length === 7) {
+ r = format.substring(1, 3);
+ g = format.substring(3, 5);
+ b = format.substring(5, 7);
+ }
+ r = parseInt(r, 16);
+ g = parseInt(g, 16);
+ b = parseInt(b, 16);
+ }
+
+ return rgb(r, g, b);
+}
+
+function d3_rgb_hsl(r, g, b) {
+ var min = Math.min(r /= 255, g /= 255, b /= 255),
+ max = Math.max(r, g, b),
+ d = max - min,
+ h,
+ s,
+ l = (max + min) / 2;
+ if (d) {
+ s = l < .5 ? d / (max + min) : d / (2 - max - min);
+ if (r == max) h = (g - b) / d + (g < b ? 6 : 0);
+ else if (g == max) h = (b - r) / d + 2;
+ else h = (r - g) / d + 4;
+ h *= 60;
+ } else {
+ s = h = 0;
+ }
+ return d3_hsl(h, s, l);
+}
+
+function d3_rgb_parseNumber(c) { // either integer or percentage
+ var f = parseFloat(c);
+ return c.charAt(c.length - 1) === "%" ? Math.round(f * 2.55) : f;
+}
+
+var d3_rgb_names = {
+ aliceblue: "#f0f8ff",
+ antiquewhite: "#faebd7",
+ aqua: "#00ffff",
+ aquamarine: "#7fffd4",
+ azure: "#f0ffff",
+ beige: "#f5f5dc",
+ bisque: "#ffe4c4",
+ black: "#000000",
+ blanchedalmond: "#ffebcd",
+ blue: "#0000ff",
+ blueviolet: "#8a2be2",
+ brown: "#a52a2a",
+ burlywood: "#deb887",
+ cadetblue: "#5f9ea0",
+ chartreuse: "#7fff00",
+ chocolate: "#d2691e",
+ coral: "#ff7f50",
+ cornflowerblue: "#6495ed",
+ cornsilk: "#fff8dc",
+ crimson: "#dc143c",
+ cyan: "#00ffff",
+ darkblue: "#00008b",
+ darkcyan: "#008b8b",
+ darkgoldenrod: "#b8860b",
+ darkgray: "#a9a9a9",
+ darkgreen: "#006400",
+ darkgrey: "#a9a9a9",
+ darkkhaki: "#bdb76b",
+ darkmagenta: "#8b008b",
+ darkolivegreen: "#556b2f",
+ darkorange: "#ff8c00",
+ darkorchid: "#9932cc",
+ darkred: "#8b0000",
+ darksalmon: "#e9967a",
+ darkseagreen: "#8fbc8f",
+ darkslateblue: "#483d8b",
+ darkslategray: "#2f4f4f",
+ darkslategrey: "#2f4f4f",
+ darkturquoise: "#00ced1",
+ darkviolet: "#9400d3",
+ deeppink: "#ff1493",
+ deepskyblue: "#00bfff",
+ dimgray: "#696969",
+ dimgrey: "#696969",
+ dodgerblue: "#1e90ff",
+ firebrick: "#b22222",
+ floralwhite: "#fffaf0",
+ forestgreen: "#228b22",
+ fuchsia: "#ff00ff",
+ gainsboro: "#dcdcdc",
+ ghostwhite: "#f8f8ff",
+ gold: "#ffd700",
+ goldenrod: "#daa520",
+ gray: "#808080",
+ green: "#008000",
+ greenyellow: "#adff2f",
+ grey: "#808080",
+ honeydew: "#f0fff0",
+ hotpink: "#ff69b4",
+ indianred: "#cd5c5c",
+ indigo: "#4b0082",
+ ivory: "#fffff0",
+ khaki: "#f0e68c",
+ lavender: "#e6e6fa",
+ lavenderblush: "#fff0f5",
+ lawngreen: "#7cfc00",
+ lemonchiffon: "#fffacd",
+ lightblue: "#add8e6",
+ lightcoral: "#f08080",
+ lightcyan: "#e0ffff",
+ lightgoldenrodyellow: "#fafad2",
+ lightgray: "#d3d3d3",
+ lightgreen: "#90ee90",
+ lightgrey: "#d3d3d3",
+ lightpink: "#ffb6c1",
+ lightsalmon: "#ffa07a",
+ lightseagreen: "#20b2aa",
+ lightskyblue: "#87cefa",
+ lightslategray: "#778899",
+ lightslategrey: "#778899",
+ lightsteelblue: "#b0c4de",
+ lightyellow: "#ffffe0",
+ lime: "#00ff00",
+ limegreen: "#32cd32",
+ linen: "#faf0e6",
+ magenta: "#ff00ff",
+ maroon: "#800000",
+ mediumaquamarine: "#66cdaa",
+ mediumblue: "#0000cd",
+ mediumorchid: "#ba55d3",
+ mediumpurple: "#9370db",
+ mediumseagreen: "#3cb371",
+ mediumslateblue: "#7b68ee",
+ mediumspringgreen: "#00fa9a",
+ mediumturquoise: "#48d1cc",
+ mediumvioletred: "#c71585",
+ midnightblue: "#191970",
+ mintcream: "#f5fffa",
+ mistyrose: "#ffe4e1",
+ moccasin: "#ffe4b5",
+ navajowhite: "#ffdead",
+ navy: "#000080",
+ oldlace: "#fdf5e6",
+ olive: "#808000",
+ olivedrab: "#6b8e23",
+ orange: "#ffa500",
+ orangered: "#ff4500",
+ orchid: "#da70d6",
+ palegoldenrod: "#eee8aa",
+ palegreen: "#98fb98",
+ paleturquoise: "#afeeee",
+ palevioletred: "#db7093",
+ papayawhip: "#ffefd5",
+ peachpuff: "#ffdab9",
+ peru: "#cd853f",
+ pink: "#ffc0cb",
+ plum: "#dda0dd",
+ powderblue: "#b0e0e6",
+ purple: "#800080",
+ red: "#ff0000",
+ rosybrown: "#bc8f8f",
+ royalblue: "#4169e1",
+ saddlebrown: "#8b4513",
+ salmon: "#fa8072",
+ sandybrown: "#f4a460",
+ seagreen: "#2e8b57",
+ seashell: "#fff5ee",
+ sienna: "#a0522d",
+ silver: "#c0c0c0",
+ skyblue: "#87ceeb",
+ slateblue: "#6a5acd",
+ slategray: "#708090",
+ slategrey: "#708090",
+ snow: "#fffafa",
+ springgreen: "#00ff7f",
+ steelblue: "#4682b4",
+ tan: "#d2b48c",
+ teal: "#008080",
+ thistle: "#d8bfd8",
+ tomato: "#ff6347",
+ turquoise: "#40e0d0",
+ violet: "#ee82ee",
+ wheat: "#f5deb3",
+ white: "#ffffff",
+ whitesmoke: "#f5f5f5",
+ yellow: "#ffff00",
+ yellowgreen: "#9acd32"
+};
+
+for (var d3_rgb_name in d3_rgb_names) {
+ d3_rgb_names[d3_rgb_name] = d3_rgb_parse(
+ d3_rgb_names[d3_rgb_name],
+ d3_rgb,
+ d3_hsl_rgb);
+}
+d3.hsl = function(h, s, l) {
+ return arguments.length === 1
+ ? (h instanceof d3_Hsl ? d3_hsl(h.h, h.s, h.l)
+ : d3_rgb_parse("" + h, d3_rgb_hsl, d3_hsl))
+ : d3_hsl(+h, +s, +l);
+};
+
+function d3_hsl(h, s, l) {
+ return new d3_Hsl(h, s, l);
+}
+
+function d3_Hsl(h, s, l) {
+ this.h = h;
+ this.s = s;
+ this.l = l;
+}
+
+d3_Hsl.prototype.brighter = function(k) {
+ k = Math.pow(0.7, arguments.length ? k : 1);
+ return d3_hsl(this.h, this.s, this.l / k);
+};
+
+d3_Hsl.prototype.darker = function(k) {
+ k = Math.pow(0.7, arguments.length ? k : 1);
+ return d3_hsl(this.h, this.s, k * this.l);
+};
+
+d3_Hsl.prototype.rgb = function() {
+ return d3_hsl_rgb(this.h, this.s, this.l);
+};
+
+d3_Hsl.prototype.toString = function() {
+ return this.rgb().toString();
+};
+
+function d3_hsl_rgb(h, s, l) {
+ var m1,
+ m2;
+
+ /* Some simple corrections for h, s and l. */
+ h = h % 360; if (h < 0) h += 360;
+ s = s < 0 ? 0 : s > 1 ? 1 : s;
+ l = l < 0 ? 0 : l > 1 ? 1 : l;
+
+ /* From FvD 13.37, CSS Color Module Level 3 */
+ m2 = l <= .5 ? l * (1 + s) : l + s - l * s;
+ m1 = 2 * l - m2;
+
+ function v(h) {
+ if (h > 360) h -= 360;
+ else if (h < 0) h += 360;
+ if (h < 60) return m1 + (m2 - m1) * h / 60;
+ if (h < 180) return m2;
+ if (h < 240) return m1 + (m2 - m1) * (240 - h) / 60;
+ return m1;
+ }
+
+ function vv(h) {
+ return Math.round(v(h) * 255);
+ }
+
+ return d3_rgb(vv(h + 120), vv(h), vv(h - 120));
+}
+function d3_selection(groups) {
+ d3_arraySubclass(groups, d3_selectionPrototype);
+ return groups;
+}
+
+var d3_select = function(s, n) { return n.querySelector(s); },
+ d3_selectAll = function(s, n) { return n.querySelectorAll(s); };
+
+// Prefer Sizzle, if available.
+if (typeof Sizzle === "function") {
+ d3_select = function(s, n) { return Sizzle(s, n)[0]; };
+ d3_selectAll = function(s, n) { return Sizzle.uniqueSort(Sizzle(s, n)); };
+}
+
+var d3_selectionPrototype = [];
+
+d3.selection = function() {
+ return d3_selectionRoot;
+};
+
+d3.selection.prototype = d3_selectionPrototype;
+d3_selectionPrototype.select = function(selector) {
+ var subgroups = [],
+ subgroup,
+ subnode,
+ group,
+ node;
+
+ if (typeof selector !== "function") selector = d3_selection_selector(selector);
+
+ for (var j = -1, m = this.length; ++j < m;) {
+ subgroups.push(subgroup = []);
+ subgroup.parentNode = (group = this[j]).parentNode;
+ for (var i = -1, n = group.length; ++i < n;) {
+ if (node = group[i]) {
+ subgroup.push(subnode = selector.call(node, node.__data__, i));
+ if (subnode && "__data__" in node) subnode.__data__ = node.__data__;
+ } else {
+ subgroup.push(null);
+ }
+ }
+ }
+
+ return d3_selection(subgroups);
+};
+
+function d3_selection_selector(selector) {
+ return function() {
+ return d3_select(selector, this);
+ };
+}
+d3_selectionPrototype.selectAll = function(selector) {
+ var subgroups = [],
+ subgroup,
+ node;
+
+ if (typeof selector !== "function") selector = d3_selection_selectorAll(selector);
+
+ for (var j = -1, m = this.length; ++j < m;) {
+ for (var group = this[j], i = -1, n = group.length; ++i < n;) {
+ if (node = group[i]) {
+ subgroups.push(subgroup = d3_array(selector.call(node, node.__data__, i)));
+ subgroup.parentNode = node;
+ }
+ }
+ }
+
+ return d3_selection(subgroups);
+};
+
+function d3_selection_selectorAll(selector) {
+ return function() {
+ return d3_selectAll(selector, this);
+ };
+}
+d3_selectionPrototype.attr = function(name, value) {
+ name = d3.ns.qualify(name);
+
+ // If no value is specified, return the first value.
+ if (arguments.length < 2) {
+ var node = this.node();
+ return name.local
+ ? node.getAttributeNS(name.space, name.local)
+ : node.getAttribute(name);
+ }
+
+ function attrNull() {
+ this.removeAttribute(name);
+ }
+
+ function attrNullNS() {
+ this.removeAttributeNS(name.space, name.local);
+ }
+
+ function attrConstant() {
+ this.setAttribute(name, value);
+ }
+
+ function attrConstantNS() {
+ this.setAttributeNS(name.space, name.local, value);
+ }
+
+ function attrFunction() {
+ var x = value.apply(this, arguments);
+ if (x == null) this.removeAttribute(name);
+ else this.setAttribute(name, x);
+ }
+
+ function attrFunctionNS() {
+ var x = value.apply(this, arguments);
+ if (x == null) this.removeAttributeNS(name.space, name.local);
+ else this.setAttributeNS(name.space, name.local, x);
+ }
+
+ return this.each(value == null
+ ? (name.local ? attrNullNS : attrNull) : (typeof value === "function"
+ ? (name.local ? attrFunctionNS : attrFunction)
+ : (name.local ? attrConstantNS : attrConstant)));
+};
+d3_selectionPrototype.classed = function(name, value) {
+ var names = name.split(d3_selection_classedWhitespace),
+ n = names.length,
+ i = -1;
+ if (arguments.length > 1) {
+ while (++i < n) d3_selection_classed.call(this, names[i], value);
+ return this;
+ } else {
+ while (++i < n) if (!d3_selection_classed.call(this, names[i])) return false;
+ return true;
+ }
+};
+
+var d3_selection_classedWhitespace = /\s+/g;
+
+function d3_selection_classed(name, value) {
+ var re = new RegExp("(^|\\s+)" + d3.requote(name) + "(\\s+|$)", "g");
+
+ // If no value is specified, return the first value.
+ if (arguments.length < 2) {
+ var node = this.node();
+ if (c = node.classList) return c.contains(name);
+ var c = node.className;
+ re.lastIndex = 0;
+ return re.test(c.baseVal != null ? c.baseVal : c);
+ }
+
+ function classedAdd() {
+ if (c = this.classList) return c.add(name);
+ var c = this.className,
+ cb = c.baseVal != null,
+ cv = cb ? c.baseVal : c;
+ re.lastIndex = 0;
+ if (!re.test(cv)) {
+ cv = d3_collapse(cv + " " + name);
+ if (cb) c.baseVal = cv;
+ else this.className = cv;
+ }
+ }
+
+ function classedRemove() {
+ if (c = this.classList) return c.remove(name);
+ var c = this.className,
+ cb = c.baseVal != null,
+ cv = cb ? c.baseVal : c;
+ cv = d3_collapse(cv.replace(re, " "));
+ if (cb) c.baseVal = cv;
+ else this.className = cv;
+ }
+
+ function classedFunction() {
+ (value.apply(this, arguments)
+ ? classedAdd
+ : classedRemove).call(this);
+ }
+
+ return this.each(typeof value === "function"
+ ? classedFunction : value
+ ? classedAdd
+ : classedRemove);
+}
+d3_selectionPrototype.style = function(name, value, priority) {
+ if (arguments.length < 3) priority = "";
+
+ // If no value is specified, return the first value.
+ if (arguments.length < 2) return window
+ .getComputedStyle(this.node(), null)
+ .getPropertyValue(name);
+
+ function styleNull() {
+ this.style.removeProperty(name);
+ }
+
+ function styleConstant() {
+ this.style.setProperty(name, value, priority);
+ }
+
+ function styleFunction() {
+ var x = value.apply(this, arguments);
+ if (x == null) this.style.removeProperty(name);
+ else this.style.setProperty(name, x, priority);
+ }
+
+ return this.each(value == null
+ ? styleNull : (typeof value === "function"
+ ? styleFunction : styleConstant));
+};
+d3_selectionPrototype.property = function(name, value) {
+
+ // If no value is specified, return the first value.
+ if (arguments.length < 2) return this.node()[name];
+
+ function propertyNull() {
+ delete this[name];
+ }
+
+ function propertyConstant() {
+ this[name] = value;
+ }
+
+ function propertyFunction() {
+ var x = value.apply(this, arguments);
+ if (x == null) delete this[name];
+ else this[name] = x;
+ }
+
+ return this.each(value == null
+ ? propertyNull : (typeof value === "function"
+ ? propertyFunction : propertyConstant));
+};
+d3_selectionPrototype.text = function(value) {
+ return arguments.length < 1 ? this.node().textContent
+ : (this.each(typeof value === "function"
+ ? function() { this.textContent = value.apply(this, arguments); }
+ : function() { this.textContent = value; }));
+};
+d3_selectionPrototype.html = function(value) {
+ return arguments.length < 1 ? this.node().innerHTML
+ : (this.each(typeof value === "function"
+ ? function() { this.innerHTML = value.apply(this, arguments); }
+ : function() { this.innerHTML = value; }));
+};
+// TODO append(node)?
+// TODO append(function)?
+d3_selectionPrototype.append = function(name) {
+ name = d3.ns.qualify(name);
+
+ function append() {
+ return this.appendChild(document.createElementNS(this.namespaceURI, name));
+ }
+
+ function appendNS() {
+ return this.appendChild(document.createElementNS(name.space, name.local));
+ }
+
+ return this.select(name.local ? appendNS : append);
+};
+// TODO insert(node, function)?
+// TODO insert(function, string)?
+// TODO insert(function, function)?
+d3_selectionPrototype.insert = function(name, before) {
+ name = d3.ns.qualify(name);
+
+ function insert() {
+ return this.insertBefore(
+ document.createElementNS(this.namespaceURI, name),
+ d3_select(before, this));
+ }
+
+ function insertNS() {
+ return this.insertBefore(
+ document.createElementNS(name.space, name.local),
+ d3_select(before, this));
+ }
+
+ return this.select(name.local ? insertNS : insert);
+};
+// TODO remove(selector)?
+// TODO remove(node)?
+// TODO remove(function)?
+d3_selectionPrototype.remove = function() {
+ return this.each(function() {
+ var parent = this.parentNode;
+ if (parent) parent.removeChild(this);
+ });
+};
+// TODO data(null) for clearing data?
+d3_selectionPrototype.data = function(data, join) {
+ var enter = [],
+ update = [],
+ exit = [];
+
+ function bind(group, groupData) {
+ var i,
+ n = group.length,
+ m = groupData.length,
+ n0 = Math.min(n, m),
+ n1 = Math.max(n, m),
+ updateNodes = [],
+ enterNodes = [],
+ exitNodes = [],
+ node,
+ nodeData;
+
+ if (join) {
+ var nodeByKey = {},
+ keys = [],
+ key,
+ j = groupData.length;
+
+ for (i = -1; ++i < n;) {
+ key = join.call(node = group[i], node.__data__, i);
+ if (key in nodeByKey) {
+ exitNodes[j++] = node; // duplicate key
+ } else {
+ nodeByKey[key] = node;
+ }
+ keys.push(key);
+ }
+
+ for (i = -1; ++i < m;) {
+ node = nodeByKey[key = join.call(groupData, nodeData = groupData[i], i)];
+ if (node) {
+ node.__data__ = nodeData;
+ updateNodes[i] = node;
+ enterNodes[i] = exitNodes[i] = null;
+ } else {
+ enterNodes[i] = d3_selection_dataNode(nodeData);
+ updateNodes[i] = exitNodes[i] = null;
+ }
+ delete nodeByKey[key];
+ }
+
+ for (i = -1; ++i < n;) {
+ if (keys[i] in nodeByKey) {
+ exitNodes[i] = group[i];
+ }
+ }
+ } else {
+ for (i = -1; ++i < n0;) {
+ node = group[i];
+ nodeData = groupData[i];
+ if (node) {
+ node.__data__ = nodeData;
+ updateNodes[i] = node;
+ enterNodes[i] = exitNodes[i] = null;
+ } else {
+ enterNodes[i] = d3_selection_dataNode(nodeData);
+ updateNodes[i] = exitNodes[i] = null;
+ }
+ }
+ for (; i < m; ++i) {
+ enterNodes[i] = d3_selection_dataNode(groupData[i]);
+ updateNodes[i] = exitNodes[i] = null;
+ }
+ for (; i < n1; ++i) {
+ exitNodes[i] = group[i];
+ enterNodes[i] = updateNodes[i] = null;
+ }
+ }
+
+ enterNodes.update
+ = updateNodes;
+
+ enterNodes.parentNode
+ = updateNodes.parentNode
+ = exitNodes.parentNode
+ = group.parentNode;
+
+ enter.push(enterNodes);
+ update.push(updateNodes);
+ exit.push(exitNodes);
+ }
+
+ var i = -1,
+ n = this.length,
+ group;
+ if (typeof data === "function") {
+ while (++i < n) {
+ bind(group = this[i], data.call(group, group.parentNode.__data__, i));
+ }
+ } else {
+ while (++i < n) {
+ bind(group = this[i], data);
+ }
+ }
+
+ var selection = d3_selection(update);
+ selection.enter = function() { return d3_selection_enter(enter); };
+ selection.exit = function() { return d3_selection(exit); };
+ return selection;
+};
+
+function d3_selection_dataNode(data) {
+ return {__data__: data};
+}
+// TODO preserve null elements to maintain index?
+d3_selectionPrototype.filter = function(filter) {
+ var subgroups = [],
+ subgroup,
+ group,
+ node;
+
+ for (var j = 0, m = this.length; j < m; j++) {
+ subgroups.push(subgroup = []);
+ subgroup.parentNode = (group = this[j]).parentNode;
+ for (var i = 0, n = group.length; i < n; i++) {
+ if ((node = group[i]) && filter.call(node, node.__data__, i)) {
+ subgroup.push(node);
+ }
+ }
+ }
+
+ return d3_selection(subgroups);
+};
+d3_selectionPrototype.map = function(map) {
+ return this.each(function() {
+ this.__data__ = map.apply(this, arguments);
+ });
+};
+d3_selectionPrototype.sort = function(comparator) {
+ comparator = d3_selection_sortComparator.apply(this, arguments);
+ for (var j = 0, m = this.length; j < m; j++) {
+ for (var group = this[j].sort(comparator), i = 1, n = group.length, prev = group[0]; i < n; i++) {
+ var node = group[i];
+ if (node) {
+ if (prev) prev.parentNode.insertBefore(node, prev.nextSibling);
+ prev = node;
+ }
+ }
+ }
+ return this;
+};
+
+function d3_selection_sortComparator(comparator) {
+ if (!arguments.length) comparator = d3.ascending;
+ return function(a, b) {
+ return comparator(a && a.__data__, b && b.__data__);
+ };
+}
+// type can be namespaced, e.g., "click.foo"
+// listener can be null for removal
+d3_selectionPrototype.on = function(type, listener, capture) {
+ if (arguments.length < 3) capture = false;
+
+ // parse the type specifier
+ var name = "__on" + type, i = type.indexOf(".");
+ if (i > 0) type = type.substring(0, i);
+
+ // if called with only one argument, return the current listener
+ if (arguments.length < 2) return (i = this.node()[name]) && i._;
+
+ // remove the old event listener, and add the new event listener
+ return this.each(function(d, i) {
+ var node = this;
+
+ if (node[name]) node.removeEventListener(type, node[name], capture);
+ if (listener) node.addEventListener(type, node[name] = l, capture);
+
+ // wrapped event listener that preserves i
+ function l(e) {
+ var o = d3.event; // Events can be reentrant (e.g., focus).
+ d3.event = e;
+ try {
+ listener.call(node, node.__data__, i);
+ } finally {
+ d3.event = o;
+ }
+ }
+
+ // stash the unwrapped listener for retrieval
+ l._ = listener;
+ });
+};
+d3_selectionPrototype.each = function(callback) {
+ for (var j = -1, m = this.length; ++j < m;) {
+ for (var group = this[j], i = -1, n = group.length; ++i < n;) {
+ var node = group[i];
+ if (node) callback.call(node, node.__data__, i, j);
+ }
+ }
+ return this;
+};
+//
+// Note: assigning to the arguments array simultaneously changes the value of
+// the corresponding argument!
+//
+// TODO The `this` argument probably shouldn't be the first argument to the
+// callback, anyway, since it's redundant. However, that will require a major
+// version bump due to backwards compatibility, so I'm not changing it right
+// away.
+//
+d3_selectionPrototype.call = function(callback) {
+ callback.apply(this, (arguments[0] = this, arguments));
+ return this;
+};
+d3_selectionPrototype.empty = function() {
+ return !this.node();
+};
+d3_selectionPrototype.node = function(callback) {
+ for (var j = 0, m = this.length; j < m; j++) {
+ for (var group = this[j], i = 0, n = group.length; i < n; i++) {
+ var node = group[i];
+ if (node) return node;
+ }
+ }
+ return null;
+};
+d3_selectionPrototype.transition = function() {
+ var subgroups = [],
+ subgroup,
+ node;
+
+ for (var j = -1, m = this.length; ++j < m;) {
+ subgroups.push(subgroup = []);
+ for (var group = this[j], i = -1, n = group.length; ++i < n;) {
+ subgroup.push((node = group[i]) ? {node: node, delay: 0, duration: 250} : null);
+ }
+ }
+
+ return d3_transition(subgroups, d3_transitionInheritId || ++d3_transitionId, Date.now());
+};
+var d3_selectionRoot = d3_selection([[document]]);
+
+d3_selectionRoot[0].parentNode = document.documentElement;
+
+// TODO fast singleton implementation!
+// TODO select(function)
+d3.select = function(selector) {
+ return typeof selector === "string"
+ ? d3_selectionRoot.select(selector)
+ : d3_selection([[selector]]); // assume node
+};
+
+// TODO selectAll(function)
+d3.selectAll = function(selector) {
+ return typeof selector === "string"
+ ? d3_selectionRoot.selectAll(selector)
+ : d3_selection([d3_array(selector)]); // assume node[]
+};
+function d3_selection_enter(selection) {
+ d3_arraySubclass(selection, d3_selection_enterPrototype);
+ return selection;
+}
+
+var d3_selection_enterPrototype = [];
+
+d3_selection_enterPrototype.append = d3_selectionPrototype.append;
+d3_selection_enterPrototype.insert = d3_selectionPrototype.insert;
+d3_selection_enterPrototype.empty = d3_selectionPrototype.empty;
+d3_selection_enterPrototype.node = d3_selectionPrototype.node;
+d3_selection_enterPrototype.select = function(selector) {
+ var subgroups = [],
+ subgroup,
+ subnode,
+ upgroup,
+ group,
+ node;
+
+ for (var j = -1, m = this.length; ++j < m;) {
+ upgroup = (group = this[j]).update;
+ subgroups.push(subgroup = []);
+ subgroup.parentNode = group.parentNode;
+ for (var i = -1, n = group.length; ++i < n;) {
+ if (node = group[i]) {
+ subgroup.push(upgroup[i] = subnode = selector.call(group.parentNode, node.__data__, i));
+ subnode.__data__ = node.__data__;
+ } else {
+ subgroup.push(null);
+ }
+ }
+ }
+
+ return d3_selection(subgroups);
+};
+function d3_transition(groups, id, time) {
+ d3_arraySubclass(groups, d3_transitionPrototype);
+
+ var tweens = {},
+ event = d3.dispatch("start", "end"),
+ ease = d3_transitionEase;
+
+ groups.id = id;
+
+ groups.time = time;
+
+ groups.tween = function(name, tween) {
+ if (arguments.length < 2) return tweens[name];
+ if (tween == null) delete tweens[name];
+ else tweens[name] = tween;
+ return groups;
+ };
+
+ groups.ease = function(value) {
+ if (!arguments.length) return ease;
+ ease = typeof value === "function" ? value : d3.ease.apply(d3, arguments);
+ return groups;
+ };
+
+ groups.each = function(type, listener) {
+ if (arguments.length < 2) return d3_transition_each.call(groups, type);
+ event.on(type, listener);
+ return groups;
+ };
+
+ d3.timer(function(elapsed) {
+ groups.each(function(d, i, j) {
+ var tweened = [],
+ node = this,
+ delay = groups[j][i].delay,
+ duration = groups[j][i].duration,
+ lock = node.__transition__ || (node.__transition__ = {active: 0, count: 0});
+
+ ++lock.count;
+
+ delay <= elapsed ? start(elapsed) : d3.timer(start, delay, time);
+
+ function start(elapsed) {
+ if (lock.active > id) return stop();
+ lock.active = id;
+
+ for (var tween in tweens) {
+ if (tween = tweens[tween].call(node, d, i)) {
+ tweened.push(tween);
+ }
+ }
+
+ event.start.call(node, d, i);
+ if (!tick(elapsed)) d3.timer(tick, 0, time);
+ return 1;
+ }
+
+ function tick(elapsed) {
+ if (lock.active !== id) return stop();
+
+ var t = (elapsed - delay) / duration,
+ e = ease(t),
+ n = tweened.length;
+
+ while (n > 0) {
+ tweened[--n].call(node, e);
+ }
+
+ if (t >= 1) {
+ stop();
+ d3_transitionInheritId = id;
+ event.end.call(node, d, i);
+ d3_transitionInheritId = 0;
+ return 1;
+ }
+ }
+
+ function stop() {
+ if (!--lock.count) delete node.__transition__;
+ return 1;
+ }
+ });
+ return 1;
+ }, 0, time);
+
+ return groups;
+}
+
+var d3_transitionRemove = {};
+
+function d3_transitionNull(d, i, a) {
+ return a != "" && d3_transitionRemove;
+}
+
+function d3_transitionTween(name, b) {
+ var interpolate = d3_interpolateByName(name);
+
+ function transitionFunction(d, i, a) {
+ var v = b.call(this, d, i);
+ return v == null
+ ? a != "" && d3_transitionRemove
+ : a != v && interpolate(a, v);
+ }
+
+ function transitionString(d, i, a) {
+ return a != b && interpolate(a, b);
+ }
+
+ return typeof b === "function" ? transitionFunction
+ : b == null ? d3_transitionNull
+ : (b += "", transitionString);
+}
+
+var d3_transitionPrototype = [],
+ d3_transitionId = 0,
+ d3_transitionInheritId = 0,
+ d3_transitionEase = d3.ease("cubic-in-out");
+
+d3_transitionPrototype.call = d3_selectionPrototype.call;
+
+d3.transition = function() {
+ return d3_selectionRoot.transition();
+};
+
+d3.transition.prototype = d3_transitionPrototype;
+d3_transitionPrototype.select = function(selector) {
+ var subgroups = [],
+ subgroup,
+ subnode,
+ node;
+
+ if (typeof selector !== "function") selector = d3_selection_selector(selector);
+
+ for (var j = -1, m = this.length; ++j < m;) {
+ subgroups.push(subgroup = []);
+ for (var group = this[j], i = -1, n = group.length; ++i < n;) {
+ if ((node = group[i]) && (subnode = selector.call(node.node, node.node.__data__, i))) {
+ if ("__data__" in node.node) subnode.__data__ = node.node.__data__;
+ subgroup.push({node: subnode, delay: node.delay, duration: node.duration});
+ } else {
+ subgroup.push(null);
+ }
+ }
+ }
+
+ return d3_transition(subgroups, this.id, this.time).ease(this.ease());
+};
+d3_transitionPrototype.selectAll = function(selector) {
+ var subgroups = [],
+ subgroup,
+ subnodes,
+ node;
+
+ if (typeof selector !== "function") selector = d3_selection_selectorAll(selector);
+
+ for (var j = -1, m = this.length; ++j < m;) {
+ for (var group = this[j], i = -1, n = group.length; ++i < n;) {
+ if (node = group[i]) {
+ subnodes = selector.call(node.node, node.node.__data__, i);
+ subgroups.push(subgroup = []);
+ for (var k = -1, o = subnodes.length; ++k < o;) {
+ subgroup.push({node: subnodes[k], delay: node.delay, duration: node.duration});
+ }
+ }
+ }
+ }
+
+ return d3_transition(subgroups, this.id, this.time).ease(this.ease());
+};
+d3_transitionPrototype.attr = function(name, value) {
+ return this.attrTween(name, d3_transitionTween(name, value));
+};
+
+d3_transitionPrototype.attrTween = function(nameNS, tween) {
+ var name = d3.ns.qualify(nameNS);
+
+ function attrTween(d, i) {
+ var f = tween.call(this, d, i, this.getAttribute(name));
+ return f === d3_transitionRemove
+ ? (this.removeAttribute(name), null)
+ : f && function(t) { this.setAttribute(name, f(t)); };
+ }
+
+ function attrTweenNS(d, i) {
+ var f = tween.call(this, d, i, this.getAttributeNS(name.space, name.local));
+ return f === d3_transitionRemove
+ ? (this.removeAttributeNS(name.space, name.local), null)
+ : f && function(t) { this.setAttributeNS(name.space, name.local, f(t)); };
+ }
+
+ return this.tween("attr." + nameNS, name.local ? attrTweenNS : attrTween);
+};
+d3_transitionPrototype.style = function(name, value, priority) {
+ if (arguments.length < 3) priority = "";
+ return this.styleTween(name, d3_transitionTween(name, value), priority);
+};
+
+d3_transitionPrototype.styleTween = function(name, tween, priority) {
+ if (arguments.length < 3) priority = "";
+ return this.tween("style." + name, function(d, i) {
+ var f = tween.call(this, d, i, window.getComputedStyle(this, null).getPropertyValue(name));
+ return f === d3_transitionRemove
+ ? (this.style.removeProperty(name), null)
+ : f && function(t) { this.style.setProperty(name, f(t), priority); };
+ });
+};
+d3_transitionPrototype.text = function(value) {
+ return this.tween("text", function(d, i) {
+ this.textContent = typeof value === "function"
+ ? value.call(this, d, i)
+ : value;
+ });
+};
+d3_transitionPrototype.remove = function() {
+ return this.each("end", function() {
+ var p;
+ if (!this.__transition__ && (p = this.parentNode)) p.removeChild(this);
+ });
+};
+d3_transitionPrototype.delay = function(value) {
+ var groups = this;
+ return groups.each(typeof value === "function"
+ ? function(d, i, j) { groups[j][i].delay = +value.apply(this, arguments); }
+ : (value = +value, function(d, i, j) { groups[j][i].delay = value; }));
+};
+d3_transitionPrototype.duration = function(value) {
+ var groups = this;
+ return groups.each(typeof value === "function"
+ ? function(d, i, j) { groups[j][i].duration = +value.apply(this, arguments); }
+ : (value = +value, function(d, i, j) { groups[j][i].duration = value; }));
+};
+function d3_transition_each(callback) {
+ for (var j = 0, m = this.length; j < m; j++) {
+ for (var group = this[j], i = 0, n = group.length; i < n; i++) {
+ var node = group[i];
+ if (node) callback.call(node = node.node, node.__data__, i, j);
+ }
+ }
+ return this;
+}
+d3_transitionPrototype.transition = function() {
+ return this.select(d3_this);
+};
+var d3_timer_queue = null,
+ d3_timer_interval, // is an interval (or frame) active?
+ d3_timer_timeout; // is a timeout active?
+
+// The timer will continue to fire until callback returns true.
+d3.timer = function(callback, delay, then) {
+ var found = false,
+ t0,
+ t1 = d3_timer_queue;
+
+ if (arguments.length < 3) {
+ if (arguments.length < 2) delay = 0;
+ else if (!isFinite(delay)) return;
+ then = Date.now();
+ }
+
+ // See if the callback's already in the queue.
+ while (t1) {
+ if (t1.callback === callback) {
+ t1.then = then;
+ t1.delay = delay;
+ found = true;
+ break;
+ }
+ t0 = t1;
+ t1 = t1.next;
+ }
+
+ // Otherwise, add the callback to the queue.
+ if (!found) d3_timer_queue = {
+ callback: callback,
+ then: then,
+ delay: delay,
+ next: d3_timer_queue
+ };
+
+ // Start animatin'!
+ if (!d3_timer_interval) {
+ d3_timer_timeout = clearTimeout(d3_timer_timeout);
+ d3_timer_interval = 1;
+ d3_timer_frame(d3_timer_step);
+ }
+}
+
+function d3_timer_step() {
+ var elapsed,
+ now = Date.now(),
+ t1 = d3_timer_queue;
+
+ while (t1) {
+ elapsed = now - t1.then;
+ if (elapsed >= t1.delay) t1.flush = t1.callback(elapsed);
+ t1 = t1.next;
+ }
+
+ var delay = d3_timer_flush() - now;
+ if (delay > 24) {
+ if (isFinite(delay)) {
+ clearTimeout(d3_timer_timeout);
+ d3_timer_timeout = setTimeout(d3_timer_step, delay);
+ }
+ d3_timer_interval = 0;
+ } else {
+ d3_timer_interval = 1;
+ d3_timer_frame(d3_timer_step);
+ }
+}
+
+d3.timer.flush = function() {
+ var elapsed,
+ now = Date.now(),
+ t1 = d3_timer_queue;
+
+ while (t1) {
+ elapsed = now - t1.then;
+ if (!t1.delay) t1.flush = t1.callback(elapsed);
+ t1 = t1.next;
+ }
+
+ d3_timer_flush();
+};
+
+// Flush after callbacks, to avoid concurrent queue modification.
+function d3_timer_flush() {
+ var t0 = null,
+ t1 = d3_timer_queue,
+ then = Infinity;
+ while (t1) {
+ if (t1.flush) {
+ t1 = t0 ? t0.next = t1.next : d3_timer_queue = t1.next;
+ } else {
+ then = Math.min(then, t1.then + t1.delay);
+ t1 = (t0 = t1).next;
+ }
+ }
+ return then;
+}
+
+var d3_timer_frame = window.requestAnimationFrame
+ || window.webkitRequestAnimationFrame
+ || window.mozRequestAnimationFrame
+ || window.oRequestAnimationFrame
+ || window.msRequestAnimationFrame
+ || function(callback) { setTimeout(callback, 17); };
+d3.transform = function(string) {
+ d3_transformG.setAttribute("transform", string);
+ var t = d3_transformG.transform.baseVal.consolidate();
+ return new d3_transform(t ? t.matrix : d3_transformIdentity);
+};
+
+// Compute x-scale and normalize the first row.
+// Compute shear and make second row orthogonal to first.
+// Compute y-scale and normalize the second row.
+// Finally, compute the rotation.
+function d3_transform(m) {
+ var r0 = [m.a, m.b],
+ r1 = [m.c, m.d],
+ kx = d3_transformNormalize(r0),
+ kz = d3_transformDot(r0, r1),
+ ky = d3_transformNormalize(d3_transformCombine(r1, r0, -kz)) || 0;
+ if (r0[0] * r1[1] < r1[0] * r0[1]) {
+ r0[0] *= -1;
+ r0[1] *= -1;
+ kx *= -1;
+ kz *= -1;
+ }
+ this.rotate = (kx ? Math.atan2(r0[1], r0[0]) : Math.atan2(-r1[0], r1[1])) * d3_transformDegrees;
+ this.translate = [m.e, m.f];
+ this.scale = [kx, ky];
+ this.skew = ky ? Math.atan2(kz, ky) * d3_transformDegrees : 0;
+};
+
+d3_transform.prototype.toString = function() {
+ return "translate(" + this.translate
+ + ")rotate(" + this.rotate
+ + ")skewX(" + this.skew
+ + ")scale(" + this.scale
+ + ")";
+};
+
+function d3_transformDot(a, b) {
+ return a[0] * b[0] + a[1] * b[1];
+}
+
+function d3_transformNormalize(a) {
+ var k = Math.sqrt(d3_transformDot(a, a));
+ if (k) {
+ a[0] /= k;
+ a[1] /= k;
+ }
+ return k;
+}
+
+function d3_transformCombine(a, b, k) {
+ a[0] += k * b[0];
+ a[1] += k * b[1];
+ return a;
+}
+
+var d3_transformG = document.createElementNS(d3.ns.prefix.svg, "g"),
+ d3_transformIdentity = {a: 1, b: 0, c: 0, d: 1, e: 0, f: 0},
+ d3_transformDegrees = 180 / Math.PI;
+function d3_noop() {}
+d3.scale = {};
+
+function d3_scaleExtent(domain) {
+ var start = domain[0], stop = domain[domain.length - 1];
+ return start < stop ? [start, stop] : [stop, start];
+}
+
+function d3_scaleRange(scale) {
+ return scale.rangeExtent ? scale.rangeExtent() : d3_scaleExtent(scale.range());
+}
+function d3_scale_nice(domain, nice) {
+ var i0 = 0,
+ i1 = domain.length - 1,
+ x0 = domain[i0],
+ x1 = domain[i1],
+ dx;
+
+ if (x1 < x0) {
+ dx = i0; i0 = i1; i1 = dx;
+ dx = x0; x0 = x1; x1 = dx;
+ }
+
+ if (dx = x1 - x0) {
+ nice = nice(dx);
+ domain[i0] = nice.floor(x0);
+ domain[i1] = nice.ceil(x1);
+ }
+
+ return domain;
+}
+
+function d3_scale_niceDefault() {
+ return Math;
+}
+d3.scale.linear = function() {
+ return d3_scale_linear([0, 1], [0, 1], d3.interpolate, false);
+};
+
+function d3_scale_linear(domain, range, interpolate, clamp) {
+ var output,
+ input;
+
+ function rescale() {
+ var linear = domain.length == 2 ? d3_scale_bilinear : d3_scale_polylinear,
+ uninterpolate = clamp ? d3_uninterpolateClamp : d3_uninterpolateNumber;
+ output = linear(domain, range, uninterpolate, interpolate);
+ input = linear(range, domain, uninterpolate, d3.interpolate);
+ return scale;
+ }
+
+ function scale(x) {
+ return output(x);
+ }
+
+ // Note: requires range is coercible to number!
+ scale.invert = function(y) {
+ return input(y);
+ };
+
+ scale.domain = function(x) {
+ if (!arguments.length) return domain;
+ domain = x.map(Number);
+ return rescale();
+ };
+
+ scale.range = function(x) {
+ if (!arguments.length) return range;
+ range = x;
+ return rescale();
+ };
+
+ scale.rangeRound = function(x) {
+ return scale.range(x).interpolate(d3.interpolateRound);
+ };
+
+ scale.clamp = function(x) {
+ if (!arguments.length) return clamp;
+ clamp = x;
+ return rescale();
+ };
+
+ scale.interpolate = function(x) {
+ if (!arguments.length) return interpolate;
+ interpolate = x;
+ return rescale();
+ };
+
+ scale.ticks = function(m) {
+ return d3_scale_linearTicks(domain, m);
+ };
+
+ scale.tickFormat = function(m) {
+ return d3_scale_linearTickFormat(domain, m);
+ };
+
+ scale.nice = function() {
+ d3_scale_nice(domain, d3_scale_linearNice);
+ return rescale();
+ };
+
+ scale.copy = function() {
+ return d3_scale_linear(domain, range, interpolate, clamp);
+ };
+
+ return rescale();
+};
+
+function d3_scale_linearRebind(scale, linear) {
+ return d3.rebind(scale, linear, "range", "rangeRound", "interpolate", "clamp");
+}
+
+function d3_scale_linearNice(dx) {
+ dx = Math.pow(10, Math.round(Math.log(dx) / Math.LN10) - 1);
+ return {
+ floor: function(x) { return Math.floor(x / dx) * dx; },
+ ceil: function(x) { return Math.ceil(x / dx) * dx; }
+ };
+}
+
+// TODO Dates? Ugh.
+function d3_scale_linearTickRange(domain, m) {
+ var extent = d3_scaleExtent(domain),
+ span = extent[1] - extent[0],
+ step = Math.pow(10, Math.floor(Math.log(span / m) / Math.LN10)),
+ err = m / span * step;
+
+ // Filter ticks to get closer to the desired count.
+ if (err <= .15) step *= 10;
+ else if (err <= .35) step *= 5;
+ else if (err <= .75) step *= 2;
+
+ // Round start and stop values to step interval.
+ extent[0] = Math.ceil(extent[0] / step) * step;
+ extent[1] = Math.floor(extent[1] / step) * step + step * .5; // inclusive
+ extent[2] = step;
+ return extent;
+}
+
+function d3_scale_linearTicks(domain, m) {
+ return d3.range.apply(d3, d3_scale_linearTickRange(domain, m));
+}
+
+function d3_scale_linearTickFormat(domain, m) {
+ return d3.format(",." + Math.max(0, -Math.floor(Math.log(d3_scale_linearTickRange(domain, m)[2]) / Math.LN10 + .01)) + "f");
+}
+function d3_scale_bilinear(domain, range, uninterpolate, interpolate) {
+ var u = uninterpolate(domain[0], domain[1]),
+ i = interpolate(range[0], range[1]);
+ return function(x) {
+ return i(u(x));
+ };
+}
+function d3_scale_polylinear(domain, range, uninterpolate, interpolate) {
+ var u = [],
+ i = [],
+ j = 0,
+ n = domain.length;
+
+ while (++j < n) {
+ u.push(uninterpolate(domain[j - 1], domain[j]));
+ i.push(interpolate(range[j - 1], range[j]));
+ }
+
+ return function(x) {
+ var j = d3.bisect(domain, x, 1, domain.length - 1) - 1;
+ return i[j](u[j](x));
+ };
+}
+d3.scale.log = function() {
+ return d3_scale_log(d3.scale.linear(), d3_scale_logp);
+};
+
+function d3_scale_log(linear, log) {
+ var pow = log.pow;
+
+ function scale(x) {
+ return linear(log(x));
+ }
+
+ scale.invert = function(x) {
+ return pow(linear.invert(x));
+ };
+
+ scale.domain = function(x) {
+ if (!arguments.length) return linear.domain().map(pow);
+ log = x[0] < 0 ? d3_scale_logn : d3_scale_logp;
+ pow = log.pow;
+ linear.domain(x.map(log));
+ return scale;
+ };
+
+ scale.nice = function() {
+ linear.domain(d3_scale_nice(linear.domain(), d3_scale_niceDefault));
+ return scale;
+ };
+
+ scale.ticks = function() {
+ var extent = d3_scaleExtent(linear.domain()),
+ ticks = [];
+ if (extent.every(isFinite)) {
+ var i = Math.floor(extent[0]),
+ j = Math.ceil(extent[1]),
+ u = pow(extent[0]),
+ v = pow(extent[1]);
+ if (log === d3_scale_logn) {
+ ticks.push(pow(i));
+ for (; i++ < j;) for (var k = 9; k > 0; k--) ticks.push(pow(i) * k);
+ } else {
+ for (; i < j; i++) for (var k = 1; k < 10; k++) ticks.push(pow(i) * k);
+ ticks.push(pow(i));
+ }
+ for (i = 0; ticks[i] < u; i++) {} // strip small values
+ for (j = ticks.length; ticks[j - 1] > v; j--) {} // strip big values
+ ticks = ticks.slice(i, j);
+ }
+ return ticks;
+ };
+
+ scale.tickFormat = function(n, format) {
+ if (arguments.length < 2) format = d3_scale_logFormat;
+ if (arguments.length < 1) return format;
+ var k = n / scale.ticks().length,
+ f = log === d3_scale_logn ? (e = -1e-12, Math.floor) : (e = 1e-12, Math.ceil),
+ e;
+ return function(d) {
+ return d / pow(f(log(d) + e)) < k ? format(d) : "";
+ };
+ };
+
+ scale.copy = function() {
+ return d3_scale_log(linear.copy(), log);
+ };
+
+ return d3_scale_linearRebind(scale, linear);
+};
+
+var d3_scale_logFormat = d3.format(".0e");
+
+function d3_scale_logp(x) {
+ return Math.log(x) / Math.LN10;
+}
+
+function d3_scale_logn(x) {
+ return -Math.log(-x) / Math.LN10;
+}
+
+d3_scale_logp.pow = function(x) {
+ return Math.pow(10, x);
+};
+
+d3_scale_logn.pow = function(x) {
+ return -Math.pow(10, -x);
+};
+d3.scale.pow = function() {
+ return d3_scale_pow(d3.scale.linear(), 1);
+};
+
+function d3_scale_pow(linear, exponent) {
+ var powp = d3_scale_powPow(exponent),
+ powb = d3_scale_powPow(1 / exponent);
+
+ function scale(x) {
+ return linear(powp(x));
+ }
+
+ scale.invert = function(x) {
+ return powb(linear.invert(x));
+ };
+
+ scale.domain = function(x) {
+ if (!arguments.length) return linear.domain().map(powb);
+ linear.domain(x.map(powp));
+ return scale;
+ };
+
+ scale.ticks = function(m) {
+ return d3_scale_linearTicks(scale.domain(), m);
+ };
+
+ scale.tickFormat = function(m) {
+ return d3_scale_linearTickFormat(scale.domain(), m);
+ };
+
+ scale.nice = function() {
+ return scale.domain(d3_scale_nice(scale.domain(), d3_scale_linearNice));
+ };
+
+ scale.exponent = function(x) {
+ if (!arguments.length) return exponent;
+ var domain = scale.domain();
+ powp = d3_scale_powPow(exponent = x);
+ powb = d3_scale_powPow(1 / exponent);
+ return scale.domain(domain);
+ };
+
+ scale.copy = function() {
+ return d3_scale_pow(linear.copy(), exponent);
+ };
+
+ return d3_scale_linearRebind(scale, linear);
+};
+
+function d3_scale_powPow(e) {
+ return function(x) {
+ return x < 0 ? -Math.pow(-x, e) : Math.pow(x, e);
+ };
+}
+d3.scale.sqrt = function() {
+ return d3.scale.pow().exponent(.5);
+};
+d3.scale.ordinal = function() {
+ return d3_scale_ordinal([], {t: "range", x: []});
+};
+
+function d3_scale_ordinal(domain, ranger) {
+ var index,
+ range,
+ rangeBand;
+
+ function scale(x) {
+ return range[((index[x] || (index[x] = domain.push(x))) - 1) % range.length];
+ }
+
+ function steps(start, step) {
+ return d3.range(domain.length).map(function(i) { return start + step * i; });
+ }
+
+ scale.domain = function(x) {
+ if (!arguments.length) return domain;
+ domain = [];
+ index = {};
+ var i = -1, n = x.length, xi;
+ while (++i < n) if (!index[xi = x[i]]) index[xi] = domain.push(xi);
+ return scale[ranger.t](ranger.x, ranger.p);
+ };
+
+ scale.range = function(x) {
+ if (!arguments.length) return range;
+ range = x;
+ rangeBand = 0;
+ ranger = {t: "range", x: x};
+ return scale;
+ };
+
+ scale.rangePoints = function(x, padding) {
+ if (arguments.length < 2) padding = 0;
+ var start = x[0],
+ stop = x[1],
+ step = (stop - start) / (domain.length - 1 + padding);
+ range = steps(domain.length < 2 ? (start + stop) / 2 : start + step * padding / 2, step);
+ rangeBand = 0;
+ ranger = {t: "rangePoints", x: x, p: padding};
+ return scale;
+ };
+
+ scale.rangeBands = function(x, padding) {
+ if (arguments.length < 2) padding = 0;
+ var start = x[0],
+ stop = x[1],
+ step = (stop - start) / (domain.length + padding);
+ range = steps(start + step * padding, step);
+ rangeBand = step * (1 - padding);
+ ranger = {t: "rangeBands", x: x, p: padding};
+ return scale;
+ };
+
+ scale.rangeRoundBands = function(x, padding) {
+ if (arguments.length < 2) padding = 0;
+ var start = x[0],
+ stop = x[1],
+ step = Math.floor((stop - start) / (domain.length + padding));
+ range = steps(start + Math.round((stop - start - (domain.length - padding) * step) / 2), step);
+ rangeBand = Math.round(step * (1 - padding));
+ ranger = {t: "rangeRoundBands", x: x, p: padding};
+ return scale;
+ };
+
+ scale.rangeBand = function() {
+ return rangeBand;
+ };
+
+ scale.rangeExtent = function() {
+ return ranger.x;
+ };
+
+ scale.copy = function() {
+ return d3_scale_ordinal(domain, ranger);
+ };
+
+ return scale.domain(domain);
+};
+/*
+ * This product includes color specifications and designs developed by Cynthia
+ * Brewer (http://colorbrewer.org/). See lib/colorbrewer for more information.
+ */
+
+d3.scale.category10 = function() {
+ return d3.scale.ordinal().range(d3_category10);
+};
+
+d3.scale.category20 = function() {
+ return d3.scale.ordinal().range(d3_category20);
+};
+
+d3.scale.category20b = function() {
+ return d3.scale.ordinal().range(d3_category20b);
+};
+
+d3.scale.category20c = function() {
+ return d3.scale.ordinal().range(d3_category20c);
+};
+
+var d3_category10 = [
+ "#1f77b4", "#ff7f0e", "#2ca02c", "#d62728", "#9467bd",
+ "#8c564b", "#e377c2", "#7f7f7f", "#bcbd22", "#17becf"
+];
+
+var d3_category20 = [
+ "#1f77b4", "#aec7e8",
+ "#ff7f0e", "#ffbb78",
+ "#2ca02c", "#98df8a",
+ "#d62728", "#ff9896",
+ "#9467bd", "#c5b0d5",
+ "#8c564b", "#c49c94",
+ "#e377c2", "#f7b6d2",
+ "#7f7f7f", "#c7c7c7",
+ "#bcbd22", "#dbdb8d",
+ "#17becf", "#9edae5"
+];
+
+var d3_category20b = [
+ "#393b79", "#5254a3", "#6b6ecf", "#9c9ede",
+ "#637939", "#8ca252", "#b5cf6b", "#cedb9c",
+ "#8c6d31", "#bd9e39", "#e7ba52", "#e7cb94",
+ "#843c39", "#ad494a", "#d6616b", "#e7969c",
+ "#7b4173", "#a55194", "#ce6dbd", "#de9ed6"
+];
+
+var d3_category20c = [
+ "#3182bd", "#6baed6", "#9ecae1", "#c6dbef",
+ "#e6550d", "#fd8d3c", "#fdae6b", "#fdd0a2",
+ "#31a354", "#74c476", "#a1d99b", "#c7e9c0",
+ "#756bb1", "#9e9ac8", "#bcbddc", "#dadaeb",
+ "#636363", "#969696", "#bdbdbd", "#d9d9d9"
+];
+d3.scale.quantile = function() {
+ return d3_scale_quantile([], []);
+};
+
+function d3_scale_quantile(domain, range) {
+ var thresholds;
+
+ function rescale() {
+ var k = 0,
+ n = domain.length,
+ q = range.length;
+ thresholds = [];
+ while (++k < q) thresholds[k - 1] = d3.quantile(domain, k / q);
+ return scale;
+ }
+
+ function scale(x) {
+ if (isNaN(x = +x)) return NaN;
+ return range[d3.bisect(thresholds, x)];
+ }
+
+ scale.domain = function(x) {
+ if (!arguments.length) return domain;
+ domain = x.filter(function(d) { return !isNaN(d); }).sort(d3.ascending);
+ return rescale();
+ };
+
+ scale.range = function(x) {
+ if (!arguments.length) return range;
+ range = x;
+ return rescale();
+ };
+
+ scale.quantiles = function() {
+ return thresholds;
+ };
+
+ scale.copy = function() {
+ return d3_scale_quantile(domain, range); // copy on write!
+ };
+
+ return rescale();
+};
+d3.scale.quantize = function() {
+ return d3_scale_quantize(0, 1, [0, 1]);
+};
+
+function d3_scale_quantize(x0, x1, range) {
+ var kx, i;
+
+ function scale(x) {
+ return range[Math.max(0, Math.min(i, Math.floor(kx * (x - x0))))];
+ }
+
+ function rescale() {
+ kx = range.length / (x1 - x0);
+ i = range.length - 1;
+ return scale;
+ }
+
+ scale.domain = function(x) {
+ if (!arguments.length) return [x0, x1];
+ x0 = +x[0];
+ x1 = +x[x.length - 1];
+ return rescale();
+ };
+
+ scale.range = function(x) {
+ if (!arguments.length) return range;
+ range = x;
+ return rescale();
+ };
+
+ scale.copy = function() {
+ return d3_scale_quantize(x0, x1, range); // copy on write
+ };
+
+ return rescale();
+};
+d3.svg = {};
+d3.svg.arc = function() {
+ var innerRadius = d3_svg_arcInnerRadius,
+ outerRadius = d3_svg_arcOuterRadius,
+ startAngle = d3_svg_arcStartAngle,
+ endAngle = d3_svg_arcEndAngle;
+
+ function arc() {
+ var r0 = innerRadius.apply(this, arguments),
+ r1 = outerRadius.apply(this, arguments),
+ a0 = startAngle.apply(this, arguments) + d3_svg_arcOffset,
+ a1 = endAngle.apply(this, arguments) + d3_svg_arcOffset,
+ da = (a1 < a0 && (da = a0, a0 = a1, a1 = da), a1 - a0),
+ df = da < Math.PI ? "0" : "1",
+ c0 = Math.cos(a0),
+ s0 = Math.sin(a0),
+ c1 = Math.cos(a1),
+ s1 = Math.sin(a1);
+ return da >= d3_svg_arcMax
+ ? (r0
+ ? "M0," + r1
+ + "A" + r1 + "," + r1 + " 0 1,1 0," + (-r1)
+ + "A" + r1 + "," + r1 + " 0 1,1 0," + r1
+ + "M0," + r0
+ + "A" + r0 + "," + r0 + " 0 1,0 0," + (-r0)
+ + "A" + r0 + "," + r0 + " 0 1,0 0," + r0
+ + "Z"
+ : "M0," + r1
+ + "A" + r1 + "," + r1 + " 0 1,1 0," + (-r1)
+ + "A" + r1 + "," + r1 + " 0 1,1 0," + r1
+ + "Z")
+ : (r0
+ ? "M" + r1 * c0 + "," + r1 * s0
+ + "A" + r1 + "," + r1 + " 0 " + df + ",1 " + r1 * c1 + "," + r1 * s1
+ + "L" + r0 * c1 + "," + r0 * s1
+ + "A" + r0 + "," + r0 + " 0 " + df + ",0 " + r0 * c0 + "," + r0 * s0
+ + "Z"
+ : "M" + r1 * c0 + "," + r1 * s0
+ + "A" + r1 + "," + r1 + " 0 " + df + ",1 " + r1 * c1 + "," + r1 * s1
+ + "L0,0"
+ + "Z");
+ }
+
+ arc.innerRadius = function(v) {
+ if (!arguments.length) return innerRadius;
+ innerRadius = d3.functor(v);
+ return arc;
+ };
+
+ arc.outerRadius = function(v) {
+ if (!arguments.length) return outerRadius;
+ outerRadius = d3.functor(v);
+ return arc;
+ };
+
+ arc.startAngle = function(v) {
+ if (!arguments.length) return startAngle;
+ startAngle = d3.functor(v);
+ return arc;
+ };
+
+ arc.endAngle = function(v) {
+ if (!arguments.length) return endAngle;
+ endAngle = d3.functor(v);
+ return arc;
+ };
+
+ arc.centroid = function() {
+ var r = (innerRadius.apply(this, arguments)
+ + outerRadius.apply(this, arguments)) / 2,
+ a = (startAngle.apply(this, arguments)
+ + endAngle.apply(this, arguments)) / 2 + d3_svg_arcOffset;
+ return [Math.cos(a) * r, Math.sin(a) * r];
+ };
+
+ return arc;
+};
+
+var d3_svg_arcOffset = -Math.PI / 2,
+ d3_svg_arcMax = 2 * Math.PI - 1e-6;
+
+function d3_svg_arcInnerRadius(d) {
+ return d.innerRadius;
+}
+
+function d3_svg_arcOuterRadius(d) {
+ return d.outerRadius;
+}
+
+function d3_svg_arcStartAngle(d) {
+ return d.startAngle;
+}
+
+function d3_svg_arcEndAngle(d) {
+ return d.endAngle;
+}
+function d3_svg_line(projection) {
+ var x = d3_svg_lineX,
+ y = d3_svg_lineY,
+ interpolate = "linear",
+ interpolator = d3_svg_lineInterpolators[interpolate],
+ tension = .7;
+
+ function line(d) {
+ return d.length < 1 ? null : "M" + interpolator(projection(d3_svg_linePoints(this, d, x, y)), tension);
+ }
+
+ line.x = function(v) {
+ if (!arguments.length) return x;
+ x = v;
+ return line;
+ };
+
+ line.y = function(v) {
+ if (!arguments.length) return y;
+ y = v;
+ return line;
+ };
+
+ line.interpolate = function(v) {
+ if (!arguments.length) return interpolate;
+ interpolator = d3_svg_lineInterpolators[interpolate = v];
+ return line;
+ };
+
+ line.tension = function(v) {
+ if (!arguments.length) return tension;
+ tension = v;
+ return line;
+ };
+
+ return line;
+}
+
+d3.svg.line = function() {
+ return d3_svg_line(Object);
+};
+
+// Converts the specified array of data into an array of points
+// (x-y tuples), by evaluating the specified `x` and `y` functions on each
+// data point. The `this` context of the evaluated functions is the specified
+// "self" object; each function is passed the current datum and index.
+function d3_svg_linePoints(self, d, x, y) {
+ var points = [],
+ i = -1,
+ n = d.length,
+ fx = typeof x === "function",
+ fy = typeof y === "function",
+ value;
+ if (fx && fy) {
+ while (++i < n) points.push([
+ x.call(self, value = d[i], i),
+ y.call(self, value, i)
+ ]);
+ } else if (fx) {
+ while (++i < n) points.push([x.call(self, d[i], i), y]);
+ } else if (fy) {
+ while (++i < n) points.push([x, y.call(self, d[i], i)]);
+ } else {
+ while (++i < n) points.push([x, y]);
+ }
+ return points;
+}
+
+// The default `x` property, which references d[0].
+function d3_svg_lineX(d) {
+ return d[0];
+}
+
+// The default `y` property, which references d[1].
+function d3_svg_lineY(d) {
+ return d[1];
+}
+
+// The various interpolators supported by the `line` class.
+var d3_svg_lineInterpolators = {
+ "linear": d3_svg_lineLinear,
+ "step-before": d3_svg_lineStepBefore,
+ "step-after": d3_svg_lineStepAfter,
+ "basis": d3_svg_lineBasis,
+ "basis-open": d3_svg_lineBasisOpen,
+ "basis-closed": d3_svg_lineBasisClosed,
+ "bundle": d3_svg_lineBundle,
+ "cardinal": d3_svg_lineCardinal,
+ "cardinal-open": d3_svg_lineCardinalOpen,
+ "cardinal-closed": d3_svg_lineCardinalClosed,
+ "monotone": d3_svg_lineMonotone
+};
+
+// Linear interpolation; generates "L" commands.
+function d3_svg_lineLinear(points) {
+ var i = 0,
+ n = points.length,
+ p = points[0],
+ path = [p[0], ",", p[1]];
+ while (++i < n) path.push("L", (p = points[i])[0], ",", p[1]);
+ return path.join("");
+}
+
+// Step interpolation; generates "H" and "V" commands.
+function d3_svg_lineStepBefore(points) {
+ var i = 0,
+ n = points.length,
+ p = points[0],
+ path = [p[0], ",", p[1]];
+ while (++i < n) path.push("V", (p = points[i])[1], "H", p[0]);
+ return path.join("");
+}
+
+// Step interpolation; generates "H" and "V" commands.
+function d3_svg_lineStepAfter(points) {
+ var i = 0,
+ n = points.length,
+ p = points[0],
+ path = [p[0], ",", p[1]];
+ while (++i < n) path.push("H", (p = points[i])[0], "V", p[1]);
+ return path.join("");
+}
+
+// Open cardinal spline interpolation; generates "C" commands.
+function d3_svg_lineCardinalOpen(points, tension) {
+ return points.length < 4
+ ? d3_svg_lineLinear(points)
+ : points[1] + d3_svg_lineHermite(points.slice(1, points.length - 1),
+ d3_svg_lineCardinalTangents(points, tension));
+}
+
+// Closed cardinal spline interpolation; generates "C" commands.
+function d3_svg_lineCardinalClosed(points, tension) {
+ return points.length < 3
+ ? d3_svg_lineLinear(points)
+ : points[0] + d3_svg_lineHermite((points.push(points[0]), points),
+ d3_svg_lineCardinalTangents([points[points.length - 2]]
+ .concat(points, [points[1]]), tension));
+}
+
+// Cardinal spline interpolation; generates "C" commands.
+function d3_svg_lineCardinal(points, tension, closed) {
+ return points.length < 3
+ ? d3_svg_lineLinear(points)
+ : points[0] + d3_svg_lineHermite(points,
+ d3_svg_lineCardinalTangents(points, tension));
+}
+
+// Hermite spline construction; generates "C" commands.
+function d3_svg_lineHermite(points, tangents) {
+ if (tangents.length < 1
+ || (points.length != tangents.length
+ && points.length != tangents.length + 2)) {
+ return d3_svg_lineLinear(points);
+ }
+
+ var quad = points.length != tangents.length,
+ path = "",
+ p0 = points[0],
+ p = points[1],
+ t0 = tangents[0],
+ t = t0,
+ pi = 1;
+
+ if (quad) {
+ path += "Q" + (p[0] - t0[0] * 2 / 3) + "," + (p[1] - t0[1] * 2 / 3)
+ + "," + p[0] + "," + p[1];
+ p0 = points[1];
+ pi = 2;
+ }
+
+ if (tangents.length > 1) {
+ t = tangents[1];
+ p = points[pi];
+ pi++;
+ path += "C" + (p0[0] + t0[0]) + "," + (p0[1] + t0[1])
+ + "," + (p[0] - t[0]) + "," + (p[1] - t[1])
+ + "," + p[0] + "," + p[1];
+ for (var i = 2; i < tangents.length; i++, pi++) {
+ p = points[pi];
+ t = tangents[i];
+ path += "S" + (p[0] - t[0]) + "," + (p[1] - t[1])
+ + "," + p[0] + "," + p[1];
+ }
+ }
+
+ if (quad) {
+ var lp = points[pi];
+ path += "Q" + (p[0] + t[0] * 2 / 3) + "," + (p[1] + t[1] * 2 / 3)
+ + "," + lp[0] + "," + lp[1];
+ }
+
+ return path;
+}
+
+// Generates tangents for a cardinal spline.
+function d3_svg_lineCardinalTangents(points, tension) {
+ var tangents = [],
+ a = (1 - tension) / 2,
+ p0,
+ p1 = points[0],
+ p2 = points[1],
+ i = 1,
+ n = points.length;
+ while (++i < n) {
+ p0 = p1;
+ p1 = p2;
+ p2 = points[i];
+ tangents.push([a * (p2[0] - p0[0]), a * (p2[1] - p0[1])]);
+ }
+ return tangents;
+}
+
+// B-spline interpolation; generates "C" commands.
+function d3_svg_lineBasis(points) {
+ if (points.length < 3) return d3_svg_lineLinear(points);
+ var i = 1,
+ n = points.length,
+ pi = points[0],
+ x0 = pi[0],
+ y0 = pi[1],
+ px = [x0, x0, x0, (pi = points[1])[0]],
+ py = [y0, y0, y0, pi[1]],
+ path = [x0, ",", y0];
+ d3_svg_lineBasisBezier(path, px, py);
+ while (++i < n) {
+ pi = points[i];
+ px.shift(); px.push(pi[0]);
+ py.shift(); py.push(pi[1]);
+ d3_svg_lineBasisBezier(path, px, py);
+ }
+ i = -1;
+ while (++i < 2) {
+ px.shift(); px.push(pi[0]);
+ py.shift(); py.push(pi[1]);
+ d3_svg_lineBasisBezier(path, px, py);
+ }
+ return path.join("");
+}
+
+// Open B-spline interpolation; generates "C" commands.
+function d3_svg_lineBasisOpen(points) {
+ if (points.length < 4) return d3_svg_lineLinear(points);
+ var path = [],
+ i = -1,
+ n = points.length,
+ pi,
+ px = [0],
+ py = [0];
+ while (++i < 3) {
+ pi = points[i];
+ px.push(pi[0]);
+ py.push(pi[1]);
+ }
+ path.push(d3_svg_lineDot4(d3_svg_lineBasisBezier3, px)
+ + "," + d3_svg_lineDot4(d3_svg_lineBasisBezier3, py));
+ --i; while (++i < n) {
+ pi = points[i];
+ px.shift(); px.push(pi[0]);
+ py.shift(); py.push(pi[1]);
+ d3_svg_lineBasisBezier(path, px, py);
+ }
+ return path.join("");
+}
+
+// Closed B-spline interpolation; generates "C" commands.
+function d3_svg_lineBasisClosed(points) {
+ var path,
+ i = -1,
+ n = points.length,
+ m = n + 4,
+ pi,
+ px = [],
+ py = [];
+ while (++i < 4) {
+ pi = points[i % n];
+ px.push(pi[0]);
+ py.push(pi[1]);
+ }
+ path = [
+ d3_svg_lineDot4(d3_svg_lineBasisBezier3, px), ",",
+ d3_svg_lineDot4(d3_svg_lineBasisBezier3, py)
+ ];
+ --i; while (++i < m) {
+ pi = points[i % n];
+ px.shift(); px.push(pi[0]);
+ py.shift(); py.push(pi[1]);
+ d3_svg_lineBasisBezier(path, px, py);
+ }
+ return path.join("");
+}
+
+function d3_svg_lineBundle(points, tension) {
+ var n = points.length - 1,
+ x0 = points[0][0],
+ y0 = points[0][1],
+ dx = points[n][0] - x0,
+ dy = points[n][1] - y0,
+ i = -1,
+ p,
+ t;
+ while (++i <= n) {
+ p = points[i];
+ t = i / n;
+ p[0] = tension * p[0] + (1 - tension) * (x0 + t * dx);
+ p[1] = tension * p[1] + (1 - tension) * (y0 + t * dy);
+ }
+ return d3_svg_lineBasis(points);
+}
+
+// Returns the dot product of the given four-element vectors.
+function d3_svg_lineDot4(a, b) {
+ return a[0] * b[0] + a[1] * b[1] + a[2] * b[2] + a[3] * b[3];
+}
+
+// Matrix to transform basis (b-spline) control points to bezier
+// control points. Derived from FvD 11.2.8.
+var d3_svg_lineBasisBezier1 = [0, 2/3, 1/3, 0],
+ d3_svg_lineBasisBezier2 = [0, 1/3, 2/3, 0],
+ d3_svg_lineBasisBezier3 = [0, 1/6, 2/3, 1/6];
+
+// Pushes a "C" Bézier curve onto the specified path array, given the
+// two specified four-element arrays which define the control points.
+function d3_svg_lineBasisBezier(path, x, y) {
+ path.push(
+ "C", d3_svg_lineDot4(d3_svg_lineBasisBezier1, x),
+ ",", d3_svg_lineDot4(d3_svg_lineBasisBezier1, y),
+ ",", d3_svg_lineDot4(d3_svg_lineBasisBezier2, x),
+ ",", d3_svg_lineDot4(d3_svg_lineBasisBezier2, y),
+ ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, x),
+ ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, y));
+}
+
+// Computes the slope from points p0 to p1.
+function d3_svg_lineSlope(p0, p1) {
+ return (p1[1] - p0[1]) / (p1[0] - p0[0]);
+}
+
+// Compute three-point differences for the given points.
+// http://en.wikipedia.org/wiki/Cubic_Hermite_spline#Finite_difference
+function d3_svg_lineFiniteDifferences(points) {
+ var i = 0,
+ j = points.length - 1,
+ m = [],
+ p0 = points[0],
+ p1 = points[1],
+ d = m[0] = d3_svg_lineSlope(p0, p1);
+ while (++i < j) {
+ m[i] = d + (d = d3_svg_lineSlope(p0 = p1, p1 = points[i + 1]));
+ }
+ m[i] = d;
+ return m;
+}
+
+// Interpolates the given points using Fritsch-Carlson Monotone cubic Hermite
+// interpolation. Returns an array of tangent vectors. For details, see
+// http://en.wikipedia.org/wiki/Monotone_cubic_interpolation
+function d3_svg_lineMonotoneTangents(points) {
+ var tangents = [],
+ d,
+ a,
+ b,
+ s,
+ m = d3_svg_lineFiniteDifferences(points),
+ i = -1,
+ j = points.length - 1;
+
+ // The first two steps are done by computing finite-differences:
+ // 1. Compute the slopes of the secant lines between successive points.
+ // 2. Initialize the tangents at every point as the average of the secants.
+
+ // Then, for each segment…
+ while (++i < j) {
+ d = d3_svg_lineSlope(points[i], points[i + 1]);
+
+ // 3. If two successive yk = y{k + 1} are equal (i.e., d is zero), then set
+ // mk = m{k + 1} = 0 as the spline connecting these points must be flat to
+ // preserve monotonicity. Ignore step 4 and 5 for those k.
+
+ if (Math.abs(d) < 1e-6) {
+ m[i] = m[i + 1] = 0;
+ } else {
+ // 4. Let ak = mk / dk and bk = m{k + 1} / dk.
+ a = m[i] / d;
+ b = m[i + 1] / d;
+
+ // 5. Prevent overshoot and ensure monotonicity by restricting the
+ // magnitude of vector <ak, bk> to a circle of radius 3.
+ s = a * a + b * b;
+ if (s > 9) {
+ s = d * 3 / Math.sqrt(s);
+ m[i] = s * a;
+ m[i + 1] = s * b;
+ }
+ }
+ }
+
+ // Compute the normalized tangent vector from the slopes. Note that if x is
+ // not monotonic, it's possible that the slope will be infinite, so we protect
+ // against NaN by setting the coordinate to zero.
+ i = -1; while (++i <= j) {
+ s = (points[Math.min(j, i + 1)][0] - points[Math.max(0, i - 1)][0])
+ / (6 * (1 + m[i] * m[i]));
+ tangents.push([s || 0, m[i] * s || 0]);
+ }
+
+ return tangents;
+}
+
+function d3_svg_lineMonotone(points) {
+ return points.length < 3
+ ? d3_svg_lineLinear(points)
+ : points[0] +
+ d3_svg_lineHermite(points, d3_svg_lineMonotoneTangents(points));
+}
+d3.svg.line.radial = function() {
+ var line = d3_svg_line(d3_svg_lineRadial);
+ line.radius = line.x, delete line.x;
+ line.angle = line.y, delete line.y;
+ return line;
+};
+
+function d3_svg_lineRadial(points) {
+ var point,
+ i = -1,
+ n = points.length,
+ r,
+ a;
+ while (++i < n) {
+ point = points[i];
+ r = point[0];
+ a = point[1] + d3_svg_arcOffset;
+ point[0] = r * Math.cos(a);
+ point[1] = r * Math.sin(a);
+ }
+ return points;
+}
+function d3_svg_area(projection) {
+ var x0 = d3_svg_lineX,
+ x1 = d3_svg_lineX,
+ y0 = 0,
+ y1 = d3_svg_lineY,
+ interpolate,
+ i0,
+ i1,
+ tension = .7;
+
+ function area(d) {
+ if (d.length < 1) return null;
+ var points0 = d3_svg_linePoints(this, d, x0, y0),
+ points1 = d3_svg_linePoints(this, d, x0 === x1 ? d3_svg_areaX(points0) : x1, y0 === y1 ? d3_svg_areaY(points0) : y1);
+ return "M" + i0(projection(points1), tension)
+ + "L" + i1(projection(points0.reverse()), tension)
+ + "Z";
+ }
+
+ area.x = function(x) {
+ if (!arguments.length) return x1;
+ x0 = x1 = x;
+ return area;
+ };
+
+ area.x0 = function(x) {
+ if (!arguments.length) return x0;
+ x0 = x;
+ return area;
+ };
+
+ area.x1 = function(x) {
+ if (!arguments.length) return x1;
+ x1 = x;
+ return area;
+ };
+
+ area.y = function(y) {
+ if (!arguments.length) return y1;
+ y0 = y1 = y;
+ return area;
+ };
+
+ area.y0 = function(y) {
+ if (!arguments.length) return y0;
+ y0 = y;
+ return area;
+ };
+
+ area.y1 = function(y) {
+ if (!arguments.length) return y1;
+ y1 = y;
+ return area;
+ };
+
+ area.interpolate = function(x) {
+ if (!arguments.length) return interpolate;
+ i0 = d3_svg_lineInterpolators[interpolate = x];
+ i1 = i0.reverse || i0;
+ return area;
+ };
+
+ area.tension = function(x) {
+ if (!arguments.length) return tension;
+ tension = x;
+ return area;
+ };
+
+ return area.interpolate("linear");
+}
+
+d3_svg_lineStepBefore.reverse = d3_svg_lineStepAfter;
+d3_svg_lineStepAfter.reverse = d3_svg_lineStepBefore;
+
+d3.svg.area = function() {
+ return d3_svg_area(Object);
+};
+
+function d3_svg_areaX(points) {
+ return function(d, i) {
+ return points[i][0];
+ };
+}
+
+function d3_svg_areaY(points) {
+ return function(d, i) {
+ return points[i][1];
+ };
+}
+d3.svg.area.radial = function() {
+ var area = d3_svg_area(d3_svg_lineRadial);
+ area.radius = area.x, delete area.x;
+ area.innerRadius = area.x0, delete area.x0;
+ area.outerRadius = area.x1, delete area.x1;
+ area.angle = area.y, delete area.y;
+ area.startAngle = area.y0, delete area.y0;
+ area.endAngle = area.y1, delete area.y1;
+ return area;
+};
+d3.svg.chord = function() {
+ var source = d3_svg_chordSource,
+ target = d3_svg_chordTarget,
+ radius = d3_svg_chordRadius,
+ startAngle = d3_svg_arcStartAngle,
+ endAngle = d3_svg_arcEndAngle;
+
+ // TODO Allow control point to be customized.
+
+ function chord(d, i) {
+ var s = subgroup(this, source, d, i),
+ t = subgroup(this, target, d, i);
+ return "M" + s.p0
+ + arc(s.r, s.p1) + (equals(s, t)
+ ? curve(s.r, s.p1, s.r, s.p0)
+ : curve(s.r, s.p1, t.r, t.p0)
+ + arc(t.r, t.p1)
+ + curve(t.r, t.p1, s.r, s.p0))
+ + "Z";
+ }
+
+ function subgroup(self, f, d, i) {
+ var subgroup = f.call(self, d, i),
+ r = radius.call(self, subgroup, i),
+ a0 = startAngle.call(self, subgroup, i) + d3_svg_arcOffset,
+ a1 = endAngle.call(self, subgroup, i) + d3_svg_arcOffset;
+ return {
+ r: r,
+ a0: a0,
+ a1: a1,
+ p0: [r * Math.cos(a0), r * Math.sin(a0)],
+ p1: [r * Math.cos(a1), r * Math.sin(a1)]
+ };
+ }
+
+ function equals(a, b) {
+ return a.a0 == b.a0 && a.a1 == b.a1;
+ }
+
+ function arc(r, p) {
+ return "A" + r + "," + r + " 0 0,1 " + p;
+ }
+
+ function curve(r0, p0, r1, p1) {
+ return "Q 0,0 " + p1;
+ }
+
+ chord.radius = function(v) {
+ if (!arguments.length) return radius;
+ radius = d3.functor(v);
+ return chord;
+ };
+
+ chord.source = function(v) {
+ if (!arguments.length) return source;
+ source = d3.functor(v);
+ return chord;
+ };
+
+ chord.target = function(v) {
+ if (!arguments.length) return target;
+ target = d3.functor(v);
+ return chord;
+ };
+
+ chord.startAngle = function(v) {
+ if (!arguments.length) return startAngle;
+ startAngle = d3.functor(v);
+ return chord;
+ };
+
+ chord.endAngle = function(v) {
+ if (!arguments.length) return endAngle;
+ endAngle = d3.functor(v);
+ return chord;
+ };
+
+ return chord;
+};
+
+function d3_svg_chordSource(d) {
+ return d.source;
+}
+
+function d3_svg_chordTarget(d) {
+ return d.target;
+}
+
+function d3_svg_chordRadius(d) {
+ return d.radius;
+}
+
+function d3_svg_chordStartAngle(d) {
+ return d.startAngle;
+}
+
+function d3_svg_chordEndAngle(d) {
+ return d.endAngle;
+}
+d3.svg.diagonal = function() {
+ var source = d3_svg_chordSource,
+ target = d3_svg_chordTarget,
+ projection = d3_svg_diagonalProjection;
+
+ function diagonal(d, i) {
+ var p0 = source.call(this, d, i),
+ p3 = target.call(this, d, i),
+ m = (p0.y + p3.y) / 2,
+ p = [p0, {x: p0.x, y: m}, {x: p3.x, y: m}, p3];
+ p = p.map(projection);
+ return "M" + p[0] + "C" + p[1] + " " + p[2] + " " + p[3];
+ }
+
+ diagonal.source = function(x) {
+ if (!arguments.length) return source;
+ source = d3.functor(x);
+ return diagonal;
+ };
+
+ diagonal.target = function(x) {
+ if (!arguments.length) return target;
+ target = d3.functor(x);
+ return diagonal;
+ };
+
+ diagonal.projection = function(x) {
+ if (!arguments.length) return projection;
+ projection = x;
+ return diagonal;
+ };
+
+ return diagonal;
+};
+
+function d3_svg_diagonalProjection(d) {
+ return [d.x, d.y];
+}
+d3.svg.diagonal.radial = function() {
+ var diagonal = d3.svg.diagonal(),
+ projection = d3_svg_diagonalProjection,
+ projection_ = diagonal.projection;
+
+ diagonal.projection = function(x) {
+ return arguments.length
+ ? projection_(d3_svg_diagonalRadialProjection(projection = x))
+ : projection;
+ };
+
+ return diagonal;
+};
+
+function d3_svg_diagonalRadialProjection(projection) {
+ return function() {
+ var d = projection.apply(this, arguments),
+ r = d[0],
+ a = d[1] + d3_svg_arcOffset;
+ return [r * Math.cos(a), r * Math.sin(a)];
+ };
+}
+d3.svg.mouse = function(container) {
+ return d3_svg_mousePoint(container, d3.event);
+};
+
+// https://bugs.webkit.org/show_bug.cgi?id=44083
+var d3_mouse_bug44083 = /WebKit/.test(navigator.userAgent) ? -1 : 0;
+
+function d3_svg_mousePoint(container, e) {
+ var point = (container.ownerSVGElement || container).createSVGPoint();
+ if ((d3_mouse_bug44083 < 0) && (window.scrollX || window.scrollY)) {
+ var svg = d3.select(document.body)
+ .append("svg")
+ .style("position", "absolute")
+ .style("top", 0)
+ .style("left", 0);
+ var ctm = svg[0][0].getScreenCTM();
+ d3_mouse_bug44083 = !(ctm.f || ctm.e);
+ svg.remove();
+ }
+ if (d3_mouse_bug44083) {
+ point.x = e.pageX;
+ point.y = e.pageY;
+ } else {
+ point.x = e.clientX;
+ point.y = e.clientY;
+ }
+ point = point.matrixTransform(container.getScreenCTM().inverse());
+ return [point.x, point.y];
+};
+d3.svg.touches = function(container, touches) {
+ if (arguments.length < 2) touches = d3.event.touches;
+
+ return touches ? d3_array(touches).map(function(touch) {
+ var point = d3_svg_mousePoint(container, touch);
+ point.identifier = touch.identifier;
+ return point;
+ }) : [];
+};
+d3.svg.symbol = function() {
+ var type = d3_svg_symbolType,
+ size = d3_svg_symbolSize;
+
+ function symbol(d, i) {
+ return (d3_svg_symbols[type.call(this, d, i)]
+ || d3_svg_symbols.circle)
+ (size.call(this, d, i));
+ }
+
+ symbol.type = function(x) {
+ if (!arguments.length) return type;
+ type = d3.functor(x);
+ return symbol;
+ };
+
+ // size of symbol in square pixels
+ symbol.size = function(x) {
+ if (!arguments.length) return size;
+ size = d3.functor(x);
+ return symbol;
+ };
+
+ return symbol;
+};
+
+function d3_svg_symbolSize() {
+ return 64;
+}
+
+function d3_svg_symbolType() {
+ return "circle";
+}
+
+// TODO cross-diagonal?
+var d3_svg_symbols = {
+ "circle": function(size) {
+ var r = Math.sqrt(size / Math.PI);
+ return "M0," + r
+ + "A" + r + "," + r + " 0 1,1 0," + (-r)
+ + "A" + r + "," + r + " 0 1,1 0," + r
+ + "Z";
+ },
+ "cross": function(size) {
+ var r = Math.sqrt(size / 5) / 2;
+ return "M" + -3 * r + "," + -r
+ + "H" + -r
+ + "V" + -3 * r
+ + "H" + r
+ + "V" + -r
+ + "H" + 3 * r
+ + "V" + r
+ + "H" + r
+ + "V" + 3 * r
+ + "H" + -r
+ + "V" + r
+ + "H" + -3 * r
+ + "Z";
+ },
+ "diamond": function(size) {
+ var ry = Math.sqrt(size / (2 * d3_svg_symbolTan30)),
+ rx = ry * d3_svg_symbolTan30;
+ return "M0," + -ry
+ + "L" + rx + ",0"
+ + " 0," + ry
+ + " " + -rx + ",0"
+ + "Z";
+ },
+ "square": function(size) {
+ var r = Math.sqrt(size) / 2;
+ return "M" + -r + "," + -r
+ + "L" + r + "," + -r
+ + " " + r + "," + r
+ + " " + -r + "," + r
+ + "Z";
+ },
+ "triangle-down": function(size) {
+ var rx = Math.sqrt(size / d3_svg_symbolSqrt3),
+ ry = rx * d3_svg_symbolSqrt3 / 2;
+ return "M0," + ry
+ + "L" + rx +"," + -ry
+ + " " + -rx + "," + -ry
+ + "Z";
+ },
+ "triangle-up": function(size) {
+ var rx = Math.sqrt(size / d3_svg_symbolSqrt3),
+ ry = rx * d3_svg_symbolSqrt3 / 2;
+ return "M0," + -ry
+ + "L" + rx +"," + ry
+ + " " + -rx + "," + ry
+ + "Z";
+ }
+};
+
+d3.svg.symbolTypes = d3.keys(d3_svg_symbols);
+
+var d3_svg_symbolSqrt3 = Math.sqrt(3),
+ d3_svg_symbolTan30 = Math.tan(30 * Math.PI / 180);
+d3.svg.axis = function() {
+ var scale = d3.scale.linear(),
+ orient = "bottom",
+ tickMajorSize = 6,
+ tickMinorSize = 6,
+ tickEndSize = 6,
+ tickPadding = 3,
+ tickArguments_ = [10],
+ tickFormat_,
+ tickSubdivide = 0;
+
+ function axis(selection) {
+ selection.each(function(d, i, j) {
+ var g = d3.select(this);
+
+ // If selection is a transition, create subtransitions.
+ var transition = selection.delay ? function(o) {
+ var id = d3_transitionInheritId;
+ try {
+ d3_transitionInheritId = selection.id;
+ return o.transition()
+ .delay(selection[j][i].delay)
+ .duration(selection[j][i].duration)
+ .ease(selection.ease());
+ } finally {
+ d3_transitionInheritId = id;
+ }
+ } : Object;
+
+ // Ticks, or domain values for ordinal scales.
+ var ticks = scale.ticks ? scale.ticks.apply(scale, tickArguments_) : scale.domain(),
+ tickFormat = tickFormat_ == null ? (scale.tickFormat ? scale.tickFormat.apply(scale, tickArguments_) : String) : tickFormat_;
+
+ // Minor ticks.
+ var subticks = d3_svg_axisSubdivide(scale, ticks, tickSubdivide),
+ subtick = g.selectAll(".minor").data(subticks, String),
+ subtickEnter = subtick.enter().insert("line", "g").attr("class", "tick minor").style("opacity", 1e-6),
+ subtickExit = transition(subtick.exit()).style("opacity", 1e-6).remove(),
+ subtickUpdate = transition(subtick).style("opacity", 1);
+
+ // Major ticks.
+ var tick = g.selectAll("g").data(ticks, String),
+ tickEnter = tick.enter().insert("g", "path").style("opacity", 1e-6),
+ tickExit = transition(tick.exit()).style("opacity", 1e-6).remove(),
+ tickUpdate = transition(tick).style("opacity", 1),
+ tickTransform;
+
+ // Domain.
+ var range = d3_scaleRange(scale),
+ path = g.selectAll(".domain").data([0]),
+ pathEnter = path.enter().append("path").attr("class", "domain"),
+ pathUpdate = transition(path);
+
+ // Stash a snapshot of the new scale, and retrieve the old snapshot.
+ var scale1 = scale.copy(),
+ scale0 = this.__chart__ || scale1;
+ this.__chart__ = scale1;
+
+ tickEnter.append("line").attr("class", "tick");
+ tickEnter.append("text");
+ tickUpdate.select("text").text(tickFormat);
+
+ switch (orient) {
+ case "bottom": {
+ tickTransform = d3_svg_axisX;
+ subtickUpdate.attr("x2", 0).attr("y2", tickMinorSize);
+ tickUpdate.select("line").attr("x2", 0).attr("y2", tickMajorSize);
+ tickUpdate.select("text").attr("x", 0).attr("y", Math.max(tickMajorSize, 0) + tickPadding).attr("dy", ".71em").attr("text-anchor", "middle");
+ pathUpdate.attr("d", "M" + range[0] + "," + tickEndSize + "V0H" + range[1] + "V" + tickEndSize);
+ break;
+ }
+ case "top": {
+ tickTransform = d3_svg_axisX;
+ subtickUpdate.attr("x2", 0).attr("y2", -tickMinorSize);
+ tickUpdate.select("line").attr("x2", 0).attr("y2", -tickMajorSize);
+ tickUpdate.select("text").attr("x", 0).attr("y", -(Math.max(tickMajorSize, 0) + tickPadding)).attr("dy", "0em").attr("text-anchor", "middle");
+ pathUpdate.attr("d", "M" + range[0] + "," + -tickEndSize + "V0H" + range[1] + "V" + -tickEndSize);
+ break;
+ }
+ case "left": {
+ tickTransform = d3_svg_axisY;
+ subtickUpdate.attr("x2", -tickMinorSize).attr("y2", 0);
+ tickUpdate.select("line").attr("x2", -tickMajorSize).attr("y2", 0);
+ tickUpdate.select("text").attr("x", -(Math.max(tickMajorSize, 0) + tickPadding)).attr("y", 0).attr("dy", ".32em").attr("text-anchor", "end");
+ pathUpdate.attr("d", "M" + -tickEndSize + "," + range[0] + "H0V" + range[1] + "H" + -tickEndSize);
+ break;
+ }
+ case "right": {
+ tickTransform = d3_svg_axisY;
+ subtickUpdate.attr("x2", tickMinorSize).attr("y2", 0);
+ tickUpdate.select("line").attr("x2", tickMajorSize).attr("y2", 0);
+ tickUpdate.select("text").attr("x", Math.max(tickMajorSize, 0) + tickPadding).attr("y", 0).attr("dy", ".32em").attr("text-anchor", "start");
+ pathUpdate.attr("d", "M" + tickEndSize + "," + range[0] + "H0V" + range[1] + "H" + tickEndSize);
+ break;
+ }
+ }
+
+ // For quantitative scales:
+ // - enter new ticks from the old scale
+ // - exit old ticks to the new scale
+ if (scale.ticks) {
+ tickEnter.call(tickTransform, scale0);
+ tickUpdate.call(tickTransform, scale1);
+ tickExit.call(tickTransform, scale1);
+ subtickEnter.call(tickTransform, scale0);
+ subtickUpdate.call(tickTransform, scale1);
+ subtickExit.call(tickTransform, scale1);
+ }
+
+ // For ordinal scales:
+ // - any entering ticks are undefined in the old scale
+ // - any exiting ticks are undefined in the new scale
+ // Therefore, we only need to transition updating ticks.
+ else {
+ var dx = scale1.rangeBand() / 2, x = function(d) { return scale1(d) + dx; };
+ tickEnter.call(tickTransform, x);
+ tickUpdate.call(tickTransform, x);
+ }
+ });
+ }
+
+ axis.scale = function(x) {
+ if (!arguments.length) return scale;
+ scale = x;
+ return axis;
+ };
+
+ axis.orient = function(x) {
+ if (!arguments.length) return orient;
+ orient = x;
+ return axis;
+ };
+
+ axis.ticks = function() {
+ if (!arguments.length) return tickArguments_;
+ tickArguments_ = arguments;
+ return axis;
+ };
+
+ axis.tickFormat = function(x) {
+ if (!arguments.length) return tickFormat_;
+ tickFormat_ = x;
+ return axis;
+ };
+
+ axis.tickSize = function(x, y, z) {
+ if (!arguments.length) return tickMajorSize;
+ var n = arguments.length - 1;
+ tickMajorSize = +x;
+ tickMinorSize = n > 1 ? +y : tickMajorSize;
+ tickEndSize = n > 0 ? +arguments[n] : tickMajorSize;
+ return axis;
+ };
+
+ axis.tickPadding = function(x) {
+ if (!arguments.length) return tickPadding;
+ tickPadding = +x;
+ return axis;
+ };
+
+ axis.tickSubdivide = function(x) {
+ if (!arguments.length) return tickSubdivide;
+ tickSubdivide = +x;
+ return axis;
+ };
+
+ return axis;
+};
+
+function d3_svg_axisX(selection, x) {
+ selection.attr("transform", function(d) { return "translate(" + x(d) + ",0)"; });
+}
+
+function d3_svg_axisY(selection, y) {
+ selection.attr("transform", function(d) { return "translate(0," + y(d) + ")"; });
+}
+
+function d3_svg_axisSubdivide(scale, ticks, m) {
+ subticks = [];
+ if (m && ticks.length > 1) {
+ var extent = d3_scaleExtent(scale.domain()),
+ subticks,
+ i = -1,
+ n = ticks.length,
+ d = (ticks[1] - ticks[0]) / ++m,
+ j,
+ v;
+ while (++i < n) {
+ for (j = m; --j > 0;) {
+ if ((v = +ticks[i] - j * d) >= extent[0]) {
+ subticks.push(v);
+ }
+ }
+ }
+ for (--i, j = 0; ++j < m && (v = +ticks[i] + j * d) < extent[1];) {
+ subticks.push(v);
+ }
+ }
+ return subticks;
+}
+d3.svg.brush = function() {
+ var event = d3.dispatch("brushstart", "brush", "brushend"),
+ x, // x-scale, optional
+ y, // y-scale, optional
+ extent = [[0, 0], [0, 0]]; // [x0, y0], [x1, y1]
+
+ function brush(g) {
+ var resizes = x && y ? ["n", "e", "s", "w", "nw", "ne", "se", "sw"]
+ : x ? ["e", "w"]
+ : y ? ["n", "s"]
+ : [];
+
+ g.each(function() {
+ var g = d3.select(this).on("mousedown.brush", down),
+ bg = g.selectAll(".background").data([,]),
+ fg = g.selectAll(".extent").data([,]),
+ tz = g.selectAll(".resize").data(resizes, String),
+ e;
+
+ // An invisible, mouseable area for starting a new brush.
+ bg.enter().append("rect")
+ .attr("class", "background")
+ .style("visibility", "hidden")
+ .style("pointer-events", "all")
+ .style("cursor", "crosshair");
+
+ // The visible brush extent; style this as you like!
+ fg.enter().append("rect")
+ .attr("class", "extent")
+ .style("cursor", "move");
+
+ // More invisible rects for resizing the extent.
+ tz.enter().append("rect")
+ .attr("class", function(d) { return "resize " + d; })
+ .attr("width", 6)
+ .attr("height", 6)
+ .style("visibility", "hidden")
+ .style("pointer-events", brush.empty() ? "none" : "all")
+ .style("cursor", function(d) { return d3_svg_brushCursor[d]; });
+
+ // Remove any superfluous resizers.
+ tz.exit().remove();
+
+ // Initialize the background to fill the defined range.
+ // If the range isn't defined, you can post-process.
+ if (x) {
+ e = d3_scaleRange(x);
+ bg.attr("x", e[0]).attr("width", e[1] - e[0]);
+ d3_svg_brushRedrawX(g, extent);
+ }
+ if (y) {
+ e = d3_scaleRange(y);
+ bg.attr("y", e[0]).attr("height", e[1] - e[0]);
+ d3_svg_brushRedrawY(g, extent);
+ }
+ });
+ }
+
+ function down() {
+ var target = d3.select(d3.event.target);
+
+ // Store some global state for the duration of the brush gesture.
+ d3_svg_brush = brush;
+ d3_svg_brushTarget = this;
+ d3_svg_brushExtent = extent;
+ d3_svg_brushOffset = d3.svg.mouse(d3_svg_brushTarget);
+
+ // If the extent was clicked on, drag rather than brush;
+ // store the offset between the mouse and extent origin instead.
+ if (d3_svg_brushDrag = target.classed("extent")) {
+ d3_svg_brushOffset[0] = extent[0][0] - d3_svg_brushOffset[0];
+ d3_svg_brushOffset[1] = extent[0][1] - d3_svg_brushOffset[1];
+ }
+
+ // If a resizer was clicked on, record which side is to be resized.
+ // Also, set the offset to the opposite side.
+ else if (target.classed("resize")) {
+ d3_svg_brushResize = d3.event.target.__data__;
+ d3_svg_brushOffset[0] = extent[+/w$/.test(d3_svg_brushResize)][0];
+ d3_svg_brushOffset[1] = extent[+/^n/.test(d3_svg_brushResize)][1];
+ }
+
+ // If the ALT key is down when starting a brush, the center is at the mouse.
+ else if (d3.event.altKey) {
+ d3_svg_brushCenter = d3_svg_brushOffset.slice();
+ }
+
+ // Restrict which dimensions are resized.
+ d3_svg_brushX = !/^(n|s)$/.test(d3_svg_brushResize) && x;
+ d3_svg_brushY = !/^(e|w)$/.test(d3_svg_brushResize) && y;
+
+ // Notify listeners.
+ d3_svg_brushDispatch = dispatcher(this, arguments);
+ d3_svg_brushDispatch("brushstart");
+ d3_svg_brushMove();
+ d3_eventCancel();
+ }
+
+ function dispatcher(that, argumentz) {
+ return function(type) {
+ var e = d3.event;
+ try {
+ d3.event = {type: type, target: brush};
+ event[type].apply(that, argumentz);
+ } finally {
+ d3.event = e;
+ }
+ };
+ }
+
+ brush.x = function(z) {
+ if (!arguments.length) return x;
+ x = z;
+ return brush;
+ };
+
+ brush.y = function(z) {
+ if (!arguments.length) return y;
+ y = z;
+ return brush;
+ };
+
+ brush.extent = function(z) {
+ var x0, x1, y0, y1, t;
+
+ // Invert the pixel extent to data-space.
+ if (!arguments.length) {
+ if (x) {
+ x0 = extent[0][0], x1 = extent[1][0];
+ if (x.invert) x0 = x.invert(x0), x1 = x.invert(x1);
+ if (x1 < x0) t = x0, x0 = x1, x1 = t;
+ }
+ if (y) {
+ y0 = extent[0][1], y1 = extent[1][1];
+ if (y.invert) y0 = y.invert(y0), y1 = y.invert(y1);
+ if (y1 < y0) t = y0, y0 = y1, y1 = t;
+ }
+ return x && y ? [[x0, y0], [x1, y1]] : x ? [x0, x1] : y && [y0, y1];
+ }
+
+ // Scale the data-space extent to pixels.
+ if (x) {
+ x0 = z[0], x1 = z[1];
+ if (y) x0 = x0[0], x1 = x1[0];
+ if (x.invert) x0 = x(x0), x1 = x(x1);
+ if (x1 < x0) t = x0, x0 = x1, x1 = t;
+ extent[0][0] = x0, extent[1][0] = x1;
+ }
+ if (y) {
+ y0 = z[0], y1 = z[1];
+ if (x) y0 = y0[1], y1 = y1[1];
+ if (y.invert) y0 = y(y0), y1 = y(y1);
+ if (y1 < y0) t = y0, y0 = y1, y1 = t;
+ extent[0][1] = y0, extent[1][1] = y1;
+ }
+
+ return brush;
+ };
+
+ brush.clear = function() {
+ extent[0][0] =
+ extent[0][1] =
+ extent[1][0] =
+ extent[1][1] = 0;
+ return brush;
+ };
+
+ brush.empty = function() {
+ return (x && extent[0][0] === extent[1][0])
+ || (y && extent[0][1] === extent[1][1]);
+ };
+
+ d3.select(window)
+ .on("mousemove.brush", d3_svg_brushMove)
+ .on("mouseup.brush", d3_svg_brushUp)
+ .on("keydown.brush", d3_svg_brushKeydown)
+ .on("keyup.brush", d3_svg_brushKeyup);
+
+ return d3.rebind(brush, event, "on");
+};
+
+var d3_svg_brush,
+ d3_svg_brushDispatch,
+ d3_svg_brushTarget,
+ d3_svg_brushX,
+ d3_svg_brushY,
+ d3_svg_brushExtent,
+ d3_svg_brushDrag,
+ d3_svg_brushResize,
+ d3_svg_brushCenter,
+ d3_svg_brushOffset;
+
+function d3_svg_brushRedrawX(g, extent) {
+ g.select(".extent").attr("x", extent[0][0]);
+ g.selectAll(".n,.s,.w,.nw,.sw").attr("x", extent[0][0] - 2);
+ g.selectAll(".e,.ne,.se").attr("x", extent[1][0] - 3);
+ g.selectAll(".extent,.n,.s").attr("width", extent[1][0] - extent[0][0]);
+}
+
+function d3_svg_brushRedrawY(g, extent) {
+ g.select(".extent").attr("y", extent[0][1]);
+ g.selectAll(".n,.e,.w,.nw,.ne").attr("y", extent[0][1] - 3);
+ g.selectAll(".s,.se,.sw").attr("y", extent[1][1] - 4);
+ g.selectAll(".extent,.e,.w").attr("height", extent[1][1] - extent[0][1]);
+}
+
+function d3_svg_brushKeydown() {
+ if (d3.event.keyCode == 32 && d3_svg_brushTarget && !d3_svg_brushDrag) {
+ d3_svg_brushCenter = null;
+ d3_svg_brushOffset[0] -= d3_svg_brushExtent[1][0];
+ d3_svg_brushOffset[1] -= d3_svg_brushExtent[1][1];
+ d3_svg_brushDrag = 2;
+ d3_eventCancel();
+ }
+}
+
+function d3_svg_brushKeyup() {
+ if (d3.event.keyCode == 32 && d3_svg_brushDrag == 2) {
+ d3_svg_brushOffset[0] += d3_svg_brushExtent[1][0];
+ d3_svg_brushOffset[1] += d3_svg_brushExtent[1][1];
+ d3_svg_brushDrag = 0;
+ d3_eventCancel();
+ }
+}
+
+function d3_svg_brushMove() {
+ if (d3_svg_brushOffset) {
+ var mouse = d3.svg.mouse(d3_svg_brushTarget),
+ g = d3.select(d3_svg_brushTarget);
+
+ if (!d3_svg_brushDrag) {
+
+ // If needed, determine the center from the current extent.
+ if (d3.event.altKey) {
+ if (!d3_svg_brushCenter) {
+ d3_svg_brushCenter = [
+ (d3_svg_brushExtent[0][0] + d3_svg_brushExtent[1][0]) / 2,
+ (d3_svg_brushExtent[0][1] + d3_svg_brushExtent[1][1]) / 2
+ ];
+ }
+
+ // Update the offset, for when the ALT key is released.
+ d3_svg_brushOffset[0] = d3_svg_brushExtent[+(mouse[0] < d3_svg_brushCenter[0])][0];
+ d3_svg_brushOffset[1] = d3_svg_brushExtent[+(mouse[1] < d3_svg_brushCenter[1])][1];
+ }
+
+ // When the ALT key is released, we clear the center.
+ else d3_svg_brushCenter = null;
+ }
+
+ // Update the brush extent for each dimension.
+ if (d3_svg_brushX) {
+ d3_svg_brushMove1(mouse, d3_svg_brushX, 0);
+ d3_svg_brushRedrawX(g, d3_svg_brushExtent);
+ }
+ if (d3_svg_brushY) {
+ d3_svg_brushMove1(mouse, d3_svg_brushY, 1);
+ d3_svg_brushRedrawY(g, d3_svg_brushExtent);
+ }
+
+ // Notify listeners.
+ d3_svg_brushDispatch("brush");
+ }
+}
+
+function d3_svg_brushMove1(mouse, scale, i) {
+ var range = d3_scaleRange(scale),
+ r0 = range[0],
+ r1 = range[1],
+ offset = d3_svg_brushOffset[i],
+ size = d3_svg_brushExtent[1][i] - d3_svg_brushExtent[0][i],
+ min,
+ max;
+
+ // When dragging, reduce the range by the extent size and offset.
+ if (d3_svg_brushDrag) {
+ r0 -= offset;
+ r1 -= size + offset;
+ }
+
+ // Clamp the mouse so that the extent fits within the range extent.
+ min = Math.max(r0, Math.min(r1, mouse[i]));
+
+ // Compute the new extent bounds.
+ if (d3_svg_brushDrag) {
+ max = (min += offset) + size;
+ } else {
+
+ // If the ALT key is pressed, then preserve the center of the extent.
+ if (d3_svg_brushCenter) offset = Math.max(r0, Math.min(r1, 2 * d3_svg_brushCenter[i] - min));
+
+ // Compute the min and max of the offset and mouse.
+ if (offset < min) {
+ max = min;
+ min = offset;
+ } else {
+ max = offset;
+ }
+ }
+
+ // Update the stored bounds.
+ d3_svg_brushExtent[0][i] = min;
+ d3_svg_brushExtent[1][i] = max;
+}
+
+function d3_svg_brushUp() {
+ if (d3_svg_brushOffset) {
+ d3_svg_brushMove();
+ d3.select(d3_svg_brushTarget).selectAll(".resize").style("pointer-events", d3_svg_brush.empty() ? "none" : "all");
+ d3_svg_brushDispatch("brushend");
+ d3_svg_brush =
+ d3_svg_brushDispatch =
+ d3_svg_brushTarget =
+ d3_svg_brushX =
+ d3_svg_brushY =
+ d3_svg_brushExtent =
+ d3_svg_brushDrag =
+ d3_svg_brushResize =
+ d3_svg_brushCenter =
+ d3_svg_brushOffset = null;
+ d3_eventCancel();
+ }
+}
+
+var d3_svg_brushCursor = {
+ n: "ns-resize",
+ e: "ew-resize",
+ s: "ns-resize",
+ w: "ew-resize",
+ nw: "nwse-resize",
+ ne: "nesw-resize",
+ se: "nwse-resize",
+ sw: "nesw-resize"
+};
+d3.behavior = {};
+// TODO Track touch points by identifier.
+
+d3.behavior.drag = function() {
+ var event = d3.dispatch("drag", "dragstart", "dragend"),
+ origin = null;
+
+ function drag() {
+ this
+ .on("mousedown.drag", mousedown)
+ .on("touchstart.drag", mousedown);
+
+ d3.select(window)
+ .on("mousemove.drag", d3_behavior_dragMove)
+ .on("touchmove.drag", d3_behavior_dragMove)
+ .on("mouseup.drag", d3_behavior_dragUp, true)
+ .on("touchend.drag", d3_behavior_dragUp, true)
+ .on("click.drag", d3_behavior_dragClick, true);
+ }
+
+ // snapshot the local context for subsequent dispatch
+ function start() {
+ d3_behavior_dragEvent = event;
+ d3_behavior_dragEventTarget = d3.event.target;
+ d3_behavior_dragTarget = this;
+ d3_behavior_dragArguments = arguments;
+ d3_behavior_dragOrigin = d3_behavior_dragPoint();
+ if (origin) {
+ d3_behavior_dragOffset = origin.apply(d3_behavior_dragTarget, d3_behavior_dragArguments);
+ d3_behavior_dragOffset = [d3_behavior_dragOffset.x - d3_behavior_dragOrigin[0], d3_behavior_dragOffset.y - d3_behavior_dragOrigin[1]];
+ } else {
+ d3_behavior_dragOffset = [0, 0];
+ }
+ d3_behavior_dragMoved = 0;
+ }
+
+ function mousedown() {
+ start.apply(this, arguments);
+ d3_behavior_dragDispatch("dragstart");
+ }
+
+ drag.origin = function(x) {
+ if (!arguments.length) return origin;
+ origin = x;
+ return drag;
+ };
+
+ return d3.rebind(drag, event, "on");
+};
+
+var d3_behavior_dragEvent,
+ d3_behavior_dragEventTarget,
+ d3_behavior_dragTarget,
+ d3_behavior_dragArguments,
+ d3_behavior_dragOffset,
+ d3_behavior_dragOrigin,
+ d3_behavior_dragMoved;
+
+function d3_behavior_dragDispatch(type) {
+ var p = d3_behavior_dragPoint(),
+ o = d3.event,
+ e = d3.event = {type: type};
+
+ if (p) {
+ e.x = p[0] + d3_behavior_dragOffset[0];
+ e.y = p[1] + d3_behavior_dragOffset[1];
+ e.dx = p[0] - d3_behavior_dragOrigin[0];
+ e.dy = p[1] - d3_behavior_dragOrigin[1];
+ d3_behavior_dragMoved |= e.dx | e.dy;
+ d3_behavior_dragOrigin = p;
+ }
+
+ try {
+ d3_behavior_dragEvent[type].apply(d3_behavior_dragTarget, d3_behavior_dragArguments);
+ } finally {
+ d3.event = o;
+ }
+
+ o.stopPropagation();
+ o.preventDefault();
+}
+
+function d3_behavior_dragPoint() {
+ var p = d3_behavior_dragTarget.parentNode,
+ t = d3.event.changedTouches;
+ return p && (t
+ ? d3.svg.touches(p, t)[0]
+ : d3.svg.mouse(p));
+}
+
+function d3_behavior_dragMove() {
+ if (!d3_behavior_dragTarget) return;
+ var parent = d3_behavior_dragTarget.parentNode;
+
+ // O NOES! The drag element was removed from the DOM.
+ if (!parent) return d3_behavior_dragUp();
+
+ d3_behavior_dragDispatch("drag");
+ d3_eventCancel();
+}
+
+function d3_behavior_dragUp() {
+ if (!d3_behavior_dragTarget) return;
+ d3_behavior_dragDispatch("dragend");
+
+ // If the node was moved, prevent the mouseup from propagating.
+ // Also prevent the subsequent click from propagating (e.g., for anchors).
+ if (d3_behavior_dragMoved) {
+ d3_eventCancel();
+ d3_behavior_dragMoved = d3.event.target === d3_behavior_dragEventTarget;
+ }
+
+ d3_behavior_dragEvent =
+ d3_behavior_dragEventTarget =
+ d3_behavior_dragTarget =
+ d3_behavior_dragArguments =
+ d3_behavior_dragOffset =
+ d3_behavior_dragOrigin = null;
+}
+
+function d3_behavior_dragClick() {
+ if (d3_behavior_dragMoved) {
+ d3_eventCancel();
+ d3_behavior_dragMoved = 0;
+ }
+}
+// TODO unbind zoom behavior?
+d3.behavior.zoom = function() {
+ var xyz = [0, 0, 0],
+ event = d3.dispatch("zoom"),
+ extent = d3_behavior_zoomInfiniteExtent;
+
+ function zoom() {
+ this
+ .on("mousedown.zoom", mousedown)
+ .on("mousewheel.zoom", mousewheel)
+ .on("DOMMouseScroll.zoom", mousewheel)
+ .on("dblclick.zoom", dblclick)
+ .on("touchstart.zoom", touchstart);
+
+ d3.select(window)
+ .on("mousemove.zoom", d3_behavior_zoomMousemove)
+ .on("mouseup.zoom", d3_behavior_zoomMouseup)
+ .on("touchmove.zoom", d3_behavior_zoomTouchmove)
+ .on("touchend.zoom", d3_behavior_zoomTouchup)
+ .on("click.zoom", d3_behavior_zoomClick, true);
+ }
+
+ // snapshot the local context for subsequent dispatch
+ function start() {
+ d3_behavior_zoomXyz = xyz;
+ d3_behavior_zoomExtent = extent;
+ d3_behavior_zoomDispatch = event.zoom;
+ d3_behavior_zoomEventTarget = d3.event.target;
+ d3_behavior_zoomTarget = this;
+ d3_behavior_zoomArguments = arguments;
+ }
+
+ function mousedown() {
+ start.apply(this, arguments);
+ d3_behavior_zoomPanning = d3_behavior_zoomLocation(d3.svg.mouse(d3_behavior_zoomTarget));
+ d3_behavior_zoomMoved = 0;
+ d3.event.preventDefault();
+ window.focus();
+ }
+
+ // store starting mouse location
+ function mousewheel() {
+ start.apply(this, arguments);
+ if (!d3_behavior_zoomZooming) d3_behavior_zoomZooming = d3_behavior_zoomLocation(d3.svg.mouse(d3_behavior_zoomTarget));
+ d3_behavior_zoomTo(d3_behavior_zoomDelta() + xyz[2], d3.svg.mouse(d3_behavior_zoomTarget), d3_behavior_zoomZooming);
+ }
+
+ function dblclick() {
+ start.apply(this, arguments);
+ var mouse = d3.svg.mouse(d3_behavior_zoomTarget);
+ d3_behavior_zoomTo(d3.event.shiftKey ? Math.ceil(xyz[2] - 1) : Math.floor(xyz[2] + 1), mouse, d3_behavior_zoomLocation(mouse));
+ }
+
+ // doubletap detection
+ function touchstart() {
+ start.apply(this, arguments);
+ var touches = d3_behavior_zoomTouchup(),
+ touch,
+ now = Date.now();
+ if ((touches.length === 1) && (now - d3_behavior_zoomLast < 300)) {
+ d3_behavior_zoomTo(1 + Math.floor(xyz[2]), touch = touches[0], d3_behavior_zoomLocations[touch.identifier]);
+ }
+ d3_behavior_zoomLast = now;
+ }
+
+ zoom.extent = function(x) {
+ if (!arguments.length) return extent;
+ extent = x == null ? d3_behavior_zoomInfiniteExtent : x;
+ return zoom;
+ };
+
+ return d3.rebind(zoom, event, "on");
+};
+
+var d3_behavior_zoomDiv,
+ d3_behavior_zoomPanning,
+ d3_behavior_zoomZooming,
+ d3_behavior_zoomLocations = {}, // identifier -> location
+ d3_behavior_zoomLast = 0,
+ d3_behavior_zoomXyz,
+ d3_behavior_zoomExtent,
+ d3_behavior_zoomDispatch,
+ d3_behavior_zoomEventTarget,
+ d3_behavior_zoomTarget,
+ d3_behavior_zoomArguments,
+ d3_behavior_zoomMoved;
+
+function d3_behavior_zoomLocation(point) {
+ return [
+ point[0] - d3_behavior_zoomXyz[0],
+ point[1] - d3_behavior_zoomXyz[1],
+ d3_behavior_zoomXyz[2]
+ ];
+}
+
+// detect the pixels that would be scrolled by this wheel event
+function d3_behavior_zoomDelta() {
+
+ // mousewheel events are totally broken!
+ // https://bugs.webkit.org/show_bug.cgi?id=40441
+ // not only that, but Chrome and Safari differ in re. to acceleration!
+ if (!d3_behavior_zoomDiv) {
+ d3_behavior_zoomDiv = d3.select("body").append("div")
+ .style("visibility", "hidden")
+ .style("top", 0)
+ .style("height", 0)
+ .style("width", 0)
+ .style("overflow-y", "scroll")
+ .append("div")
+ .style("height", "2000px")
+ .node().parentNode;
+ }
+
+ var e = d3.event, delta;
+ try {
+ d3_behavior_zoomDiv.scrollTop = 1000;
+ d3_behavior_zoomDiv.dispatchEvent(e);
+ delta = 1000 - d3_behavior_zoomDiv.scrollTop;
+ } catch (error) {
+ delta = e.wheelDelta || (-e.detail * 5);
+ }
+
+ return delta * .005;
+}
+
+// Note: Since we don't rotate, it's possible for the touches to become
+// slightly detached from their original positions. Thus, we recompute the
+// touch points on touchend as well as touchstart!
+function d3_behavior_zoomTouchup() {
+ var touches = d3.svg.touches(d3_behavior_zoomTarget),
+ i = -1,
+ n = touches.length,
+ touch;
+ while (++i < n) d3_behavior_zoomLocations[(touch = touches[i]).identifier] = d3_behavior_zoomLocation(touch);
+ return touches;
+}
+
+function d3_behavior_zoomTouchmove() {
+ var touches = d3.svg.touches(d3_behavior_zoomTarget);
+ switch (touches.length) {
+
+ // single-touch pan
+ case 1: {
+ var touch = touches[0];
+ d3_behavior_zoomTo(d3_behavior_zoomXyz[2], touch, d3_behavior_zoomLocations[touch.identifier]);
+ break;
+ }
+
+ // double-touch pan + zoom
+ case 2: {
+ var p0 = touches[0],
+ p1 = touches[1],
+ p2 = [(p0[0] + p1[0]) / 2, (p0[1] + p1[1]) / 2],
+ l0 = d3_behavior_zoomLocations[p0.identifier],
+ l1 = d3_behavior_zoomLocations[p1.identifier],
+ l2 = [(l0[0] + l1[0]) / 2, (l0[1] + l1[1]) / 2, l0[2]];
+ d3_behavior_zoomTo(Math.log(d3.event.scale) / Math.LN2 + l0[2], p2, l2);
+ break;
+ }
+ }
+}
+
+function d3_behavior_zoomMousemove() {
+ d3_behavior_zoomZooming = null;
+ if (d3_behavior_zoomPanning) {
+ d3_behavior_zoomMoved = 1;
+ d3_behavior_zoomTo(d3_behavior_zoomXyz[2], d3.svg.mouse(d3_behavior_zoomTarget), d3_behavior_zoomPanning);
+ }
+}
+
+function d3_behavior_zoomMouseup() {
+ if (d3_behavior_zoomPanning) {
+ if (d3_behavior_zoomMoved) {
+ d3_eventCancel();
+ d3_behavior_zoomMoved = d3_behavior_zoomEventTarget === d3.event.target;
+ }
+
+ d3_behavior_zoomXyz =
+ d3_behavior_zoomExtent =
+ d3_behavior_zoomDispatch =
+ d3_behavior_zoomEventTarget =
+ d3_behavior_zoomTarget =
+ d3_behavior_zoomArguments =
+ d3_behavior_zoomPanning = null;
+ }
+}
+
+function d3_behavior_zoomClick() {
+ if (d3_behavior_zoomMoved) {
+ d3_eventCancel();
+ d3_behavior_zoomMoved = 0;
+ }
+}
+
+function d3_behavior_zoomTo(z, x0, x1) {
+ z = d3_behavior_zoomExtentClamp(z, 2);
+ var j = Math.pow(2, d3_behavior_zoomXyz[2]),
+ k = Math.pow(2, z),
+ K = Math.pow(2, (d3_behavior_zoomXyz[2] = z) - x1[2]),
+ x_ = d3_behavior_zoomXyz[0],
+ y_ = d3_behavior_zoomXyz[1],
+ x = d3_behavior_zoomXyz[0] = d3_behavior_zoomExtentClamp((x0[0] - x1[0] * K), 0, k),
+ y = d3_behavior_zoomXyz[1] = d3_behavior_zoomExtentClamp((x0[1] - x1[1] * K), 1, k),
+ o = d3.event; // Events can be reentrant (e.g., focus).
+
+ d3.event = {
+ scale: k,
+ translate: [x, y],
+ transform: function(sx, sy) {
+ if (sx) transform(sx, x_, x);
+ if (sy) transform(sy, y_, y);
+ }
+ };
+
+ function transform(scale, a, b) {
+ scale.domain(scale.range().map(function(v) { return scale.invert(((v - b) * j) / k + a); }));
+ }
+
+ try {
+ d3_behavior_zoomDispatch.apply(d3_behavior_zoomTarget, d3_behavior_zoomArguments);
+ } finally {
+ d3.event = o;
+ }
+
+ o.preventDefault();
+}
+
+var d3_behavior_zoomInfiniteExtent = [
+ [-Infinity, Infinity],
+ [-Infinity, Infinity],
+ [-Infinity, Infinity]
+];
+
+function d3_behavior_zoomExtentClamp(x, i, k) {
+ var range = d3_behavior_zoomExtent[i],
+ r0 = range[0],
+ r1 = range[1];
+ return arguments.length === 3
+ ? Math.max(r1 * (r1 === Infinity ? -Infinity : 1 / k - 1),
+ Math.min(r0 === -Infinity ? Infinity : r0, x / k)) * k
+ : Math.max(r0, Math.min(r1, x));
+}
+})();
diff --git a/visualize/static/d3.layout.js b/visualize/static/d3.layout.js
new file mode 100644
index 0000000..30ba791
--- /dev/null
+++ b/visualize/static/d3.layout.js
@@ -0,0 +1,1891 @@
+(function(){d3.layout = {};
+// Implements hierarchical edge bundling using Holten's algorithm. For each
+// input link, a path is computed that travels through the tree, up the parent
+// hierarchy to the least common ancestor, and then back down to the destination
+// node. Each path is simply an array of nodes.
+d3.layout.bundle = function() {
+ return function(links) {
+ var paths = [],
+ i = -1,
+ n = links.length;
+ while (++i < n) paths.push(d3_layout_bundlePath(links[i]));
+ return paths;
+ };
+};
+
+function d3_layout_bundlePath(link) {
+ var start = link.source,
+ end = link.target,
+ lca = d3_layout_bundleLeastCommonAncestor(start, end),
+ points = [start];
+ while (start !== lca) {
+ start = start.parent;
+ points.push(start);
+ }
+ var k = points.length;
+ while (end !== lca) {
+ points.splice(k, 0, end);
+ end = end.parent;
+ }
+ return points;
+}
+
+function d3_layout_bundleAncestors(node) {
+ var ancestors = [],
+ parent = node.parent;
+ while (parent != null) {
+ ancestors.push(node);
+ node = parent;
+ parent = parent.parent;
+ }
+ ancestors.push(node);
+ return ancestors;
+}
+
+function d3_layout_bundleLeastCommonAncestor(a, b) {
+ if (a === b) return a;
+ var aNodes = d3_layout_bundleAncestors(a),
+ bNodes = d3_layout_bundleAncestors(b),
+ aNode = aNodes.pop(),
+ bNode = bNodes.pop(),
+ sharedNode = null;
+ while (aNode === bNode) {
+ sharedNode = aNode;
+ aNode = aNodes.pop();
+ bNode = bNodes.pop();
+ }
+ return sharedNode;
+}
+d3.layout.chord = function() {
+ var chord = {},
+ chords,
+ groups,
+ matrix,
+ n,
+ padding = 0,
+ sortGroups,
+ sortSubgroups,
+ sortChords;
+
+ function relayout() {
+ var subgroups = {},
+ groupSums = [],
+ groupIndex = d3.range(n),
+ subgroupIndex = [],
+ k,
+ x,
+ x0,
+ i,
+ j;
+
+ chords = [];
+ groups = [];
+
+ // Compute the sum.
+ k = 0, i = -1; while (++i < n) {
+ x = 0, j = -1; while (++j < n) {
+ x += matrix[i][j];
+ }
+ groupSums.push(x);
+ subgroupIndex.push(d3.range(n));
+ k += x;
+ }
+
+ // Sort groups…
+ if (sortGroups) {
+ groupIndex.sort(function(a, b) {
+ return sortGroups(groupSums[a], groupSums[b]);
+ });
+ }
+
+ // Sort subgroups…
+ if (sortSubgroups) {
+ subgroupIndex.forEach(function(d, i) {
+ d.sort(function(a, b) {
+ return sortSubgroups(matrix[i][a], matrix[i][b]);
+ });
+ });
+ }
+
+ // Convert the sum to scaling factor for [0, 2pi].
+ // TODO Allow start and end angle to be specified.
+ // TODO Allow padding to be specified as percentage?
+ k = (2 * Math.PI - padding * n) / k;
+
+ // Compute the start and end angle for each group and subgroup.
+ // Note: Opera has a bug reordering object literal properties!
+ x = 0, i = -1; while (++i < n) {
+ x0 = x, j = -1; while (++j < n) {
+ var di = groupIndex[i],
+ dj = subgroupIndex[di][j],
+ v = matrix[di][dj],
+ a0 = x,
+ a1 = x += v * k;
+ subgroups[di + "-" + dj] = {
+ index: di,
+ subindex: dj,
+ startAngle: a0,
+ endAngle: a1,
+ value: v
+ };
+ }
+ groups.push({
+ index: di,
+ startAngle: x0,
+ endAngle: x,
+ value: (x - x0) / k
+ });
+ x += padding;
+ }
+
+ // Generate chords for each (non-empty) subgroup-subgroup link.
+ i = -1; while (++i < n) {
+ j = i - 1; while (++j < n) {
+ var source = subgroups[i + "-" + j],
+ target = subgroups[j + "-" + i];
+ if (source.value || target.value) {
+ chords.push(source.value < target.value
+ ? {source: target, target: source}
+ : {source: source, target: target});
+ }
+ }
+ }
+
+ if (sortChords) resort();
+ }
+
+ function resort() {
+ chords.sort(function(a, b) {
+ return sortChords(
+ (a.source.value + a.target.value) / 2,
+ (b.source.value + b.target.value) / 2);
+ });
+ }
+
+ chord.matrix = function(x) {
+ if (!arguments.length) return matrix;
+ n = (matrix = x) && matrix.length;
+ chords = groups = null;
+ return chord;
+ };
+
+ chord.padding = function(x) {
+ if (!arguments.length) return padding;
+ padding = x;
+ chords = groups = null;
+ return chord;
+ };
+
+ chord.sortGroups = function(x) {
+ if (!arguments.length) return sortGroups;
+ sortGroups = x;
+ chords = groups = null;
+ return chord;
+ };
+
+ chord.sortSubgroups = function(x) {
+ if (!arguments.length) return sortSubgroups;
+ sortSubgroups = x;
+ chords = null;
+ return chord;
+ };
+
+ chord.sortChords = function(x) {
+ if (!arguments.length) return sortChords;
+ sortChords = x;
+ if (chords) resort();
+ return chord;
+ };
+
+ chord.chords = function() {
+ if (!chords) relayout();
+ return chords;
+ };
+
+ chord.groups = function() {
+ if (!groups) relayout();
+ return groups;
+ };
+
+ return chord;
+};
+// A rudimentary force layout using Gauss-Seidel.
+d3.layout.force = function() {
+ var force = {},
+ event = d3.dispatch("tick"),
+ size = [1, 1],
+ drag,
+ alpha,
+ friction = .9,
+ linkDistance = d3_layout_forceLinkDistance,
+ linkStrength = d3_layout_forceLinkStrength,
+ charge = -30,
+ gravity = .1,
+ theta = .8,
+ interval,
+ nodes = [],
+ links = [],
+ distances,
+ strengths,
+ charges;
+
+ function repulse(node) {
+ return function(quad, x1, y1, x2, y2) {
+ if (quad.point !== node) {
+ var dx = quad.cx - node.x,
+ dy = quad.cy - node.y,
+ dn = 1 / Math.sqrt(dx * dx + dy * dy);
+
+ /* Barnes-Hut criterion. */
+ if ((x2 - x1) * dn < theta) {
+ var k = quad.charge * dn * dn;
+ node.px -= dx * k;
+ node.py -= dy * k;
+ return true;
+ }
+
+ if (quad.point && isFinite(dn)) {
+ var k = quad.pointCharge * dn * dn;
+ node.px -= dx * k;
+ node.py -= dy * k;
+ }
+ }
+ return !quad.charge;
+ };
+ }
+
+ function tick() {
+ var n = nodes.length,
+ m = links.length,
+ q,
+ i, // current index
+ o, // current object
+ s, // current source
+ t, // current target
+ l, // current distance
+ k, // current force
+ x, // x-distance
+ y; // y-distance
+
+ // gauss-seidel relaxation for links
+ for (i = 0; i < m; ++i) {
+ o = links[i];
+ s = o.source;
+ t = o.target;
+ x = t.x - s.x;
+ y = t.y - s.y;
+ if (l = (x * x + y * y)) {
+ l = alpha * strengths[i] * ((l = Math.sqrt(l)) - distances[i]) / l;
+ x *= l;
+ y *= l;
+ t.x -= x * (k = s.weight / (t.weight + s.weight));
+ t.y -= y * k;
+ s.x += x * (k = 1 - k);
+ s.y += y * k;
+ }
+ }
+
+ // apply gravity forces
+ if (k = alpha * gravity) {
+ x = size[0] / 2;
+ y = size[1] / 2;
+ i = -1; if (k) while (++i < n) {
+ o = nodes[i];
+ o.x += (x - o.x) * k;
+ o.y += (y - o.y) * k;
+ }
+ }
+
+ // compute quadtree center of mass and apply charge forces
+ if (charge) {
+ d3_layout_forceAccumulate(q = d3.geom.quadtree(nodes), alpha, charges);
+ i = -1; while (++i < n) {
+ if (!(o = nodes[i]).fixed) {
+ q.visit(repulse(o));
+ }
+ }
+ }
+
+ // position verlet integration
+ i = -1; while (++i < n) {
+ o = nodes[i];
+ if (o.fixed) {
+ o.x = o.px;
+ o.y = o.py;
+ } else {
+ o.x -= (o.px - (o.px = o.x)) * friction;
+ o.y -= (o.py - (o.py = o.y)) * friction;
+ }
+ }
+
+ event.tick({type: "tick", alpha: alpha});
+
+ // simulated annealing, basically
+ return (alpha *= .99) < .005;
+ }
+
+ force.nodes = function(x) {
+ if (!arguments.length) return nodes;
+ nodes = x;
+ return force;
+ };
+
+ force.links = function(x) {
+ if (!arguments.length) return links;
+ links = x;
+ return force;
+ };
+
+ force.size = function(x) {
+ if (!arguments.length) return size;
+ size = x;
+ return force;
+ };
+
+ force.linkDistance = function(x) {
+ if (!arguments.length) return linkDistance;
+ linkDistance = d3.functor(x);
+ return force;
+ };
+
+ // For backwards-compatibility.
+ force.distance = force.linkDistance;
+
+ force.linkStrength = function(x) {
+ if (!arguments.length) return linkStrength;
+ linkStrength = d3.functor(x);
+ return force;
+ };
+
+ force.friction = function(x) {
+ if (!arguments.length) return friction;
+ friction = x;
+ return force;
+ };
+
+ force.charge = function(x) {
+ if (!arguments.length) return charge;
+ charge = typeof x === "function" ? x : +x;
+ return force;
+ };
+
+ force.gravity = function(x) {
+ if (!arguments.length) return gravity;
+ gravity = x;
+ return force;
+ };
+
+ force.theta = function(x) {
+ if (!arguments.length) return theta;
+ theta = x;
+ return force;
+ };
+
+ force.start = function() {
+ var i,
+ j,
+ n = nodes.length,
+ m = links.length,
+ w = size[0],
+ h = size[1],
+ neighbors,
+ o;
+
+ for (i = 0; i < n; ++i) {
+ (o = nodes[i]).index = i;
+ o.weight = 0;
+ }
+
+ distances = [];
+ strengths = [];
+ for (i = 0; i < m; ++i) {
+ o = links[i];
+ if (typeof o.source == "number") o.source = nodes[o.source];
+ if (typeof o.target == "number") o.target = nodes[o.target];
+ distances[i] = linkDistance.call(this, o, i);
+ strengths[i] = linkStrength.call(this, o, i);
+ ++o.source.weight;
+ ++o.target.weight;
+ }
+
+ for (i = 0; i < n; ++i) {
+ o = nodes[i];
+ if (isNaN(o.x)) o.x = position("x", w);
+ if (isNaN(o.y)) o.y = position("y", h);
+ if (isNaN(o.px)) o.px = o.x;
+ if (isNaN(o.py)) o.py = o.y;
+ }
+
+ charges = [];
+ if (typeof charge === "function") {
+ for (i = 0; i < n; ++i) {
+ charges[i] = +charge.call(this, nodes[i], i);
+ }
+ } else {
+ for (i = 0; i < n; ++i) {
+ charges[i] = charge;
+ }
+ }
+
+ // initialize node position based on first neighbor
+ function position(dimension, size) {
+ var neighbors = neighbor(i),
+ j = -1,
+ m = neighbors.length,
+ x;
+ while (++j < m) if (!isNaN(x = neighbors[j][dimension])) return x;
+ return Math.random() * size;
+ }
+
+ // initialize neighbors lazily
+ function neighbor() {
+ if (!neighbors) {
+ neighbors = [];
+ for (j = 0; j < n; ++j) {
+ neighbors[j] = [];
+ }
+ for (j = 0; j < m; ++j) {
+ var o = links[j];
+ neighbors[o.source.index].push(o.target);
+ neighbors[o.target.index].push(o.source);
+ }
+ }
+ return neighbors[i];
+ }
+
+ return force.resume();
+ };
+
+ force.resume = function() {
+ alpha = .1;
+ d3.timer(tick);
+ return force;
+ };
+
+ force.stop = function() {
+ alpha = 0;
+ return force;
+ };
+
+ // use `node.call(force.drag)` to make nodes draggable
+ force.drag = function() {
+ if (!drag) drag = d3.behavior.drag()
+ .origin(Object)
+ .on("dragstart", dragstart)
+ .on("drag", d3_layout_forceDrag)
+ .on("dragend", d3_layout_forceDragEnd);
+
+ this.on("mouseover.force", d3_layout_forceDragOver)
+ .on("mouseout.force", d3_layout_forceDragOut)
+ .call(drag);
+ };
+
+ function dragstart(d) {
+ d3_layout_forceDragOver(d3_layout_forceDragNode = d);
+ d3_layout_forceDragForce = force;
+ }
+
+ return d3.rebind(force, event, "on");
+};
+
+var d3_layout_forceDragForce,
+ d3_layout_forceDragNode;
+
+function d3_layout_forceDragOver(d) {
+ d.fixed |= 2;
+}
+
+function d3_layout_forceDragOut(d) {
+ if (d !== d3_layout_forceDragNode) d.fixed &= 1;
+}
+
+function d3_layout_forceDragEnd() {
+ d3_layout_forceDrag();
+ d3_layout_forceDragNode.fixed &= 1;
+ d3_layout_forceDragForce = d3_layout_forceDragNode = null;
+}
+
+function d3_layout_forceDrag() {
+ d3_layout_forceDragNode.px = d3.event.x;
+ d3_layout_forceDragNode.py = d3.event.y;
+ d3_layout_forceDragForce.resume(); // restart annealing
+}
+
+function d3_layout_forceAccumulate(quad, alpha, charges) {
+ var cx = 0,
+ cy = 0;
+ quad.charge = 0;
+ if (!quad.leaf) {
+ var nodes = quad.nodes,
+ n = nodes.length,
+ i = -1,
+ c;
+ while (++i < n) {
+ c = nodes[i];
+ if (c == null) continue;
+ d3_layout_forceAccumulate(c, alpha, charges);
+ quad.charge += c.charge;
+ cx += c.charge * c.cx;
+ cy += c.charge * c.cy;
+ }
+ }
+ if (quad.point) {
+ // jitter internal nodes that are coincident
+ if (!quad.leaf) {
+ quad.point.x += Math.random() - .5;
+ quad.point.y += Math.random() - .5;
+ }
+ var k = alpha * charges[quad.point.index];
+ quad.charge += quad.pointCharge = k;
+ cx += k * quad.point.x;
+ cy += k * quad.point.y;
+ }
+ quad.cx = cx / quad.charge;
+ quad.cy = cy / quad.charge;
+}
+
+function d3_layout_forceLinkDistance(link) {
+ return 20;
+}
+
+function d3_layout_forceLinkStrength(link) {
+ return 1;
+}
+d3.layout.partition = function() {
+ var hierarchy = d3.layout.hierarchy(),
+ size = [1, 1]; // width, height
+
+ function position(node, x, dx, dy) {
+ var children = node.children;
+ node.x = x;
+ node.y = node.depth * dy;
+ node.dx = dx;
+ node.dy = dy;
+ if (children && (n = children.length)) {
+ var i = -1,
+ n,
+ c,
+ d;
+ dx = node.value ? dx / node.value : 0;
+ while (++i < n) {
+ position(c = children[i], x, d = c.value * dx, dy);
+ x += d;
+ }
+ }
+ }
+
+ function depth(node) {
+ var children = node.children,
+ d = 0;
+ if (children && (n = children.length)) {
+ var i = -1,
+ n;
+ while (++i < n) d = Math.max(d, depth(children[i]));
+ }
+ return 1 + d;
+ }
+
+ function partition(d, i) {
+ var nodes = hierarchy.call(this, d, i);
+ position(nodes[0], 0, size[0], size[1] / depth(nodes[0]));
+ return nodes;
+ }
+
+ partition.size = function(x) {
+ if (!arguments.length) return size;
+ size = x;
+ return partition;
+ };
+
+ return d3_layout_hierarchyRebind(partition, hierarchy);
+};
+d3.layout.pie = function() {
+ var value = Number,
+ sort = d3_layout_pieSortByValue,
+ startAngle = 0,
+ endAngle = 2 * Math.PI;
+
+ function pie(data, i) {
+
+ // Compute the numeric values for each data element.
+ var values = data.map(function(d, i) { return +value.call(pie, d, i); });
+
+ // Compute the start angle.
+ var a = +(typeof startAngle === "function"
+ ? startAngle.apply(this, arguments)
+ : startAngle);
+
+ // Compute the angular scale factor: from value to radians.
+ var k = ((typeof endAngle === "function"
+ ? endAngle.apply(this, arguments)
+ : endAngle) - startAngle)
+ / d3.sum(values);
+
+ // Optionally sort the data.
+ var index = d3.range(data.length);
+ if (sort != null) index.sort(sort === d3_layout_pieSortByValue
+ ? function(i, j) { return values[j] - values[i]; }
+ : function(i, j) { return sort(data[i], data[j]); });
+
+ // Compute the arcs!
+ var arcs = index.map(function(i) {
+ return {
+ data: data[i],
+ value: d = values[i],
+ startAngle: a,
+ endAngle: a += d * k
+ };
+ });
+
+ // Return the arcs in the original data's order.
+ return data.map(function(d, i) {
+ return arcs[index[i]];
+ });
+ }
+
+ /**
+ * Specifies the value function *x*, which returns a nonnegative numeric value
+ * for each datum. The default value function is `Number`. The value function
+ * is passed two arguments: the current datum and the current index.
+ */
+ pie.value = function(x) {
+ if (!arguments.length) return value;
+ value = x;
+ return pie;
+ };
+
+ /**
+ * Specifies a sort comparison operator *x*. The comparator is passed two data
+ * elements from the data array, a and b; it returns a negative value if a is
+ * less than b, a positive value if a is greater than b, and zero if a equals
+ * b.
+ */
+ pie.sort = function(x) {
+ if (!arguments.length) return sort;
+ sort = x;
+ return pie;
+ };
+
+ /**
+ * Specifies the overall start angle of the pie chart. Defaults to 0. The
+ * start angle can be specified either as a constant or as a function; in the
+ * case of a function, it is evaluated once per array (as opposed to per
+ * element).
+ */
+ pie.startAngle = function(x) {
+ if (!arguments.length) return startAngle;
+ startAngle = x;
+ return pie;
+ };
+
+ /**
+ * Specifies the overall end angle of the pie chart. Defaults to 2π. The
+ * end angle can be specified either as a constant or as a function; in the
+ * case of a function, it is evaluated once per array (as opposed to per
+ * element).
+ */
+ pie.endAngle = function(x) {
+ if (!arguments.length) return endAngle;
+ endAngle = x;
+ return pie;
+ };
+
+ return pie;
+};
+
+var d3_layout_pieSortByValue = {};
+// data is two-dimensional array of x,y; we populate y0
+d3.layout.stack = function() {
+ var values = Object,
+ order = d3_layout_stackOrders["default"],
+ offset = d3_layout_stackOffsets["zero"],
+ out = d3_layout_stackOut,
+ x = d3_layout_stackX,
+ y = d3_layout_stackY;
+
+ function stack(data, index) {
+
+ // Convert series to canonical two-dimensional representation.
+ var series = data.map(function(d, i) {
+ return values.call(stack, d, i);
+ });
+
+ // Convert each series to canonical [[x,y]] representation.
+ var points = series.map(function(d, i) {
+ return d.map(function(v, i) {
+ return [x.call(stack, v, i), y.call(stack, v, i)];
+ });
+ });
+
+ // Compute the order of series, and permute them.
+ var orders = order.call(stack, points, index);
+ series = d3.permute(series, orders);
+ points = d3.permute(points, orders);
+
+ // Compute the baseline…
+ var offsets = offset.call(stack, points, index);
+
+ // And propagate it to other series.
+ var n = series.length,
+ m = series[0].length,
+ i,
+ j,
+ o;
+ for (j = 0; j < m; ++j) {
+ out.call(stack, series[0][j], o = offsets[j], points[0][j][1]);
+ for (i = 1; i < n; ++i) {
+ out.call(stack, series[i][j], o += points[i - 1][j][1], points[i][j][1]);
+ }
+ }
+
+ return data;
+ }
+
+ stack.values = function(x) {
+ if (!arguments.length) return values;
+ values = x;
+ return stack;
+ };
+
+ stack.order = function(x) {
+ if (!arguments.length) return order;
+ order = typeof x === "function" ? x : d3_layout_stackOrders[x];
+ return stack;
+ };
+
+ stack.offset = function(x) {
+ if (!arguments.length) return offset;
+ offset = typeof x === "function" ? x : d3_layout_stackOffsets[x];
+ return stack;
+ };
+
+ stack.x = function(z) {
+ if (!arguments.length) return x;
+ x = z;
+ return stack;
+ };
+
+ stack.y = function(z) {
+ if (!arguments.length) return y;
+ y = z;
+ return stack;
+ };
+
+ stack.out = function(z) {
+ if (!arguments.length) return out;
+ out = z;
+ return stack;
+ };
+
+ return stack;
+}
+
+function d3_layout_stackX(d) {
+ return d.x;
+}
+
+function d3_layout_stackY(d) {
+ return d.y;
+}
+
+function d3_layout_stackOut(d, y0, y) {
+ d.y0 = y0;
+ d.y = y;
+}
+
+var d3_layout_stackOrders = {
+
+ "inside-out": function(data) {
+ var n = data.length,
+ i,
+ j,
+ max = data.map(d3_layout_stackMaxIndex),
+ sums = data.map(d3_layout_stackReduceSum),
+ index = d3.range(n).sort(function(a, b) { return max[a] - max[b]; }),
+ top = 0,
+ bottom = 0,
+ tops = [],
+ bottoms = [];
+ for (i = 0; i < n; ++i) {
+ j = index[i];
+ if (top < bottom) {
+ top += sums[j];
+ tops.push(j);
+ } else {
+ bottom += sums[j];
+ bottoms.push(j);
+ }
+ }
+ return bottoms.reverse().concat(tops);
+ },
+
+ "reverse": function(data) {
+ return d3.range(data.length).reverse();
+ },
+
+ "default": function(data) {
+ return d3.range(data.length);
+ }
+
+};
+
+var d3_layout_stackOffsets = {
+
+ "silhouette": function(data) {
+ var n = data.length,
+ m = data[0].length,
+ sums = [],
+ max = 0,
+ i,
+ j,
+ o,
+ y0 = [];
+ for (j = 0; j < m; ++j) {
+ for (i = 0, o = 0; i < n; i++) o += data[i][j][1];
+ if (o > max) max = o;
+ sums.push(o);
+ }
+ for (j = 0; j < m; ++j) {
+ y0[j] = (max - sums[j]) / 2;
+ }
+ return y0;
+ },
+
+ "wiggle": function(data) {
+ var n = data.length,
+ x = data[0],
+ m = x.length,
+ max = 0,
+ i,
+ j,
+ k,
+ s1,
+ s2,
+ s3,
+ dx,
+ o,
+ o0,
+ y0 = [];
+ y0[0] = o = o0 = 0;
+ for (j = 1; j < m; ++j) {
+ for (i = 0, s1 = 0; i < n; ++i) s1 += data[i][j][1];
+ for (i = 0, s2 = 0, dx = x[j][0] - x[j - 1][0]; i < n; ++i) {
+ for (k = 0, s3 = (data[i][j][1] - data[i][j - 1][1]) / (2 * dx); k < i; ++k) {
+ s3 += (data[k][j][1] - data[k][j - 1][1]) / dx;
+ }
+ s2 += s3 * data[i][j][1];
+ }
+ y0[j] = o -= s1 ? s2 / s1 * dx : 0;
+ if (o < o0) o0 = o;
+ }
+ for (j = 0; j < m; ++j) y0[j] -= o0;
+ return y0;
+ },
+
+ "expand": function(data) {
+ var n = data.length,
+ m = data[0].length,
+ k = 1 / n,
+ i,
+ j,
+ o,
+ y0 = [];
+ for (j = 0; j < m; ++j) {
+ for (i = 0, o = 0; i < n; i++) o += data[i][j][1];
+ if (o) for (i = 0; i < n; i++) data[i][j][1] /= o;
+ else for (i = 0; i < n; i++) data[i][j][1] = k;
+ }
+ for (j = 0; j < m; ++j) y0[j] = 0;
+ return y0;
+ },
+
+ "zero": function(data) {
+ var j = -1,
+ m = data[0].length,
+ y0 = [];
+ while (++j < m) y0[j] = 0;
+ return y0;
+ }
+
+};
+
+function d3_layout_stackMaxIndex(array) {
+ var i = 1,
+ j = 0,
+ v = array[0][1],
+ k,
+ n = array.length;
+ for (; i < n; ++i) {
+ if ((k = array[i][1]) > v) {
+ j = i;
+ v = k;
+ }
+ }
+ return j;
+}
+
+function d3_layout_stackReduceSum(d) {
+ return d.reduce(d3_layout_stackSum, 0);
+}
+
+function d3_layout_stackSum(p, d) {
+ return p + d[1];
+}
+d3.layout.histogram = function() {
+ var frequency = true,
+ valuer = Number,
+ ranger = d3_layout_histogramRange,
+ binner = d3_layout_histogramBinSturges;
+
+ function histogram(data, i) {
+ var bins = [],
+ values = data.map(valuer, this),
+ range = ranger.call(this, values, i),
+ thresholds = binner.call(this, range, values, i),
+ bin,
+ i = -1,
+ n = values.length,
+ m = thresholds.length - 1,
+ k = frequency ? 1 : 1 / n,
+ x;
+
+ // Initialize the bins.
+ while (++i < m) {
+ bin = bins[i] = [];
+ bin.dx = thresholds[i + 1] - (bin.x = thresholds[i]);
+ bin.y = 0;
+ }
+
+ // Fill the bins, ignoring values outside the range.
+ i = -1; while(++i < n) {
+ x = values[i];
+ if ((x >= range[0]) && (x <= range[1])) {
+ bin = bins[d3.bisect(thresholds, x, 1, m) - 1];
+ bin.y += k;
+ bin.push(data[i]);
+ }
+ }
+
+ return bins;
+ }
+
+ // Specifies how to extract a value from the associated data. The default
+ // value function is `Number`, which is equivalent to the identity function.
+ histogram.value = function(x) {
+ if (!arguments.length) return valuer;
+ valuer = x;
+ return histogram;
+ };
+
+ // Specifies the range of the histogram. Values outside the specified range
+ // will be ignored. The argument `x` may be specified either as a two-element
+ // array representing the minimum and maximum value of the range, or as a
+ // function that returns the range given the array of values and the current
+ // index `i`. The default range is the extent (minimum and maximum) of the
+ // values.
+ histogram.range = function(x) {
+ if (!arguments.length) return ranger;
+ ranger = d3.functor(x);
+ return histogram;
+ };
+
+ // Specifies how to bin values in the histogram. The argument `x` may be
+ // specified as a number, in which case the range of values will be split
+ // uniformly into the given number of bins. Or, `x` may be an array of
+ // threshold values, defining the bins; the specified array must contain the
+ // rightmost (upper) value, thus specifying n + 1 values for n bins. Or, `x`
+ // may be a function which is evaluated, being passed the range, the array of
+ // values, and the current index `i`, returning an array of thresholds. The
+ // default bin function will divide the values into uniform bins using
+ // Sturges' formula.
+ histogram.bins = function(x) {
+ if (!arguments.length) return binner;
+ binner = typeof x === "number"
+ ? function(range) { return d3_layout_histogramBinFixed(range, x); }
+ : d3.functor(x);
+ return histogram;
+ };
+
+ // Specifies whether the histogram's `y` value is a count (frequency) or a
+ // probability (density). The default value is true.
+ histogram.frequency = function(x) {
+ if (!arguments.length) return frequency;
+ frequency = !!x;
+ return histogram;
+ };
+
+ return histogram;
+};
+
+function d3_layout_histogramBinSturges(range, values) {
+ return d3_layout_histogramBinFixed(range, Math.ceil(Math.log(values.length) / Math.LN2 + 1));
+}
+
+function d3_layout_histogramBinFixed(range, n) {
+ var x = -1,
+ b = +range[0],
+ m = (range[1] - b) / n,
+ f = [];
+ while (++x <= n) f[x] = m * x + b;
+ return f;
+}
+
+function d3_layout_histogramRange(values) {
+ return [d3.min(values), d3.max(values)];
+}
+d3.layout.hierarchy = function() {
+ var sort = d3_layout_hierarchySort,
+ children = d3_layout_hierarchyChildren,
+ value = d3_layout_hierarchyValue;
+
+ // Recursively compute the node depth and value.
+ // Also converts the data representation into a standard hierarchy structure.
+ function recurse(data, depth, nodes) {
+ var childs = children.call(hierarchy, data, depth),
+ node = d3_layout_hierarchyInline ? data : {data: data};
+ node.depth = depth;
+ nodes.push(node);
+ if (childs && (n = childs.length)) {
+ var i = -1,
+ n,
+ c = node.children = [],
+ v = 0,
+ j = depth + 1;
+ while (++i < n) {
+ d = recurse(childs[i], j, nodes);
+ d.parent = node;
+ c.push(d);
+ v += d.value;
+ }
+ if (sort) c.sort(sort);
+ if (value) node.value = v;
+ } else if (value) {
+ node.value = +value.call(hierarchy, data, depth) || 0;
+ }
+ return node;
+ }
+
+ // Recursively re-evaluates the node value.
+ function revalue(node, depth) {
+ var children = node.children,
+ v = 0;
+ if (children && (n = children.length)) {
+ var i = -1,
+ n,
+ j = depth + 1;
+ while (++i < n) v += revalue(children[i], j);
+ } else if (value) {
+ v = +value.call(hierarchy, d3_layout_hierarchyInline ? node : node.data, depth) || 0;
+ }
+ if (value) node.value = v;
+ return v;
+ }
+
+ function hierarchy(d) {
+ var nodes = [];
+ recurse(d, 0, nodes);
+ return nodes;
+ }
+
+ hierarchy.sort = function(x) {
+ if (!arguments.length) return sort;
+ sort = x;
+ return hierarchy;
+ };
+
+ hierarchy.children = function(x) {
+ if (!arguments.length) return children;
+ children = x;
+ return hierarchy;
+ };
+
+ hierarchy.value = function(x) {
+ if (!arguments.length) return value;
+ value = x;
+ return hierarchy;
+ };
+
+ // Re-evaluates the `value` property for the specified hierarchy.
+ hierarchy.revalue = function(root) {
+ revalue(root, 0);
+ return root;
+ };
+
+ return hierarchy;
+};
+
+// A method assignment helper for hierarchy subclasses.
+function d3_layout_hierarchyRebind(object, hierarchy) {
+ d3.rebind(object, hierarchy, "sort", "children", "value");
+
+ // Add an alias for links, for convenience.
+ object.links = d3_layout_hierarchyLinks;
+
+ // If the new API is used, enabling inlining.
+ object.nodes = function(d) {
+ d3_layout_hierarchyInline = true;
+ return (object.nodes = object)(d);
+ };
+
+ return object;
+}
+
+function d3_layout_hierarchyChildren(d) {
+ return d.children;
+}
+
+function d3_layout_hierarchyValue(d) {
+ return d.value;
+}
+
+function d3_layout_hierarchySort(a, b) {
+ return b.value - a.value;
+}
+
+// Returns an array source+target objects for the specified nodes.
+function d3_layout_hierarchyLinks(nodes) {
+ return d3.merge(nodes.map(function(parent) {
+ return (parent.children || []).map(function(child) {
+ return {source: parent, target: child};
+ });
+ }));
+}
+
+// For backwards-compatibility, don't enable inlining by default.
+var d3_layout_hierarchyInline = false;
+d3.layout.pack = function() {
+ var hierarchy = d3.layout.hierarchy().sort(d3_layout_packSort),
+ size = [1, 1];
+
+ function pack(d, i) {
+ var nodes = hierarchy.call(this, d, i),
+ root = nodes[0];
+
+ // Recursively compute the layout.
+ root.x = 0;
+ root.y = 0;
+ d3_layout_packTree(root);
+
+ // Scale the layout to fit the requested size.
+ var w = size[0],
+ h = size[1],
+ k = 1 / Math.max(2 * root.r / w, 2 * root.r / h);
+ d3_layout_packTransform(root, w / 2, h / 2, k);
+
+ return nodes;
+ }
+
+ pack.size = function(x) {
+ if (!arguments.length) return size;
+ size = x;
+ return pack;
+ };
+
+ return d3_layout_hierarchyRebind(pack, hierarchy);
+};
+
+function d3_layout_packSort(a, b) {
+ return a.value - b.value;
+}
+
+function d3_layout_packInsert(a, b) {
+ var c = a._pack_next;
+ a._pack_next = b;
+ b._pack_prev = a;
+ b._pack_next = c;
+ c._pack_prev = b;
+}
+
+function d3_layout_packSplice(a, b) {
+ a._pack_next = b;
+ b._pack_prev = a;
+}
+
+function d3_layout_packIntersects(a, b) {
+ var dx = b.x - a.x,
+ dy = b.y - a.y,
+ dr = a.r + b.r;
+ return (dr * dr - dx * dx - dy * dy) > .001; // within epsilon
+}
+
+function d3_layout_packCircle(nodes) {
+ var xMin = Infinity,
+ xMax = -Infinity,
+ yMin = Infinity,
+ yMax = -Infinity,
+ n = nodes.length,
+ a, b, c, j, k;
+
+ function bound(node) {
+ xMin = Math.min(node.x - node.r, xMin);
+ xMax = Math.max(node.x + node.r, xMax);
+ yMin = Math.min(node.y - node.r, yMin);
+ yMax = Math.max(node.y + node.r, yMax);
+ }
+
+ // Create node links.
+ nodes.forEach(d3_layout_packLink);
+
+ // Create first node.
+ a = nodes[0];
+ a.x = -a.r;
+ a.y = 0;
+ bound(a);
+
+ // Create second node.
+ if (n > 1) {
+ b = nodes[1];
+ b.x = b.r;
+ b.y = 0;
+ bound(b);
+
+ // Create third node and build chain.
+ if (n > 2) {
+ c = nodes[2];
+ d3_layout_packPlace(a, b, c);
+ bound(c);
+ d3_layout_packInsert(a, c);
+ a._pack_prev = c;
+ d3_layout_packInsert(c, b);
+ b = a._pack_next;
+
+ // Now iterate through the rest.
+ for (var i = 3; i < n; i++) {
+ d3_layout_packPlace(a, b, c = nodes[i]);
+
+ // Search for the closest intersection.
+ var isect = 0, s1 = 1, s2 = 1;
+ for (j = b._pack_next; j !== b; j = j._pack_next, s1++) {
+ if (d3_layout_packIntersects(j, c)) {
+ isect = 1;
+ break;
+ }
+ }
+ if (isect == 1) {
+ for (k = a._pack_prev; k !== j._pack_prev; k = k._pack_prev, s2++) {
+ if (d3_layout_packIntersects(k, c)) {
+ if (s2 < s1) {
+ isect = -1;
+ j = k;
+ }
+ break;
+ }
+ }
+ }
+
+ // Update node chain.
+ if (isect == 0) {
+ d3_layout_packInsert(a, c);
+ b = c;
+ bound(c);
+ } else if (isect > 0) {
+ d3_layout_packSplice(a, j);
+ b = j;
+ i--;
+ } else { // isect < 0
+ d3_layout_packSplice(j, b);
+ a = j;
+ i--;
+ }
+ }
+ }
+ }
+
+ // Re-center the circles and return the encompassing radius.
+ var cx = (xMin + xMax) / 2,
+ cy = (yMin + yMax) / 2,
+ cr = 0;
+ for (var i = 0; i < n; i++) {
+ var node = nodes[i];
+ node.x -= cx;
+ node.y -= cy;
+ cr = Math.max(cr, node.r + Math.sqrt(node.x * node.x + node.y * node.y));
+ }
+
+ // Remove node links.
+ nodes.forEach(d3_layout_packUnlink);
+
+ return cr;
+}
+
+function d3_layout_packLink(node) {
+ node._pack_next = node._pack_prev = node;
+}
+
+function d3_layout_packUnlink(node) {
+ delete node._pack_next;
+ delete node._pack_prev;
+}
+
+function d3_layout_packTree(node) {
+ var children = node.children;
+ if (children && children.length) {
+ children.forEach(d3_layout_packTree);
+ node.r = d3_layout_packCircle(children);
+ } else {
+ node.r = Math.sqrt(node.value);
+ }
+}
+
+function d3_layout_packTransform(node, x, y, k) {
+ var children = node.children;
+ node.x = (x += k * node.x);
+ node.y = (y += k * node.y);
+ node.r *= k;
+ if (children) {
+ var i = -1, n = children.length;
+ while (++i < n) d3_layout_packTransform(children[i], x, y, k);
+ }
+}
+
+function d3_layout_packPlace(a, b, c) {
+ var db = a.r + c.r,
+ dx = b.x - a.x,
+ dy = b.y - a.y;
+ if (db && (dx || dy)) {
+ var da = b.r + c.r,
+ dc = Math.sqrt(dx * dx + dy * dy),
+ cos = Math.max(-1, Math.min(1, (db * db + dc * dc - da * da) / (2 * db * dc))),
+ theta = Math.acos(cos),
+ x = cos * (db /= dc),
+ y = Math.sin(theta) * db;
+ c.x = a.x + x * dx + y * dy;
+ c.y = a.y + x * dy - y * dx;
+ } else {
+ c.x = a.x + db;
+ c.y = a.y;
+ }
+}
+// Implements a hierarchical layout using the cluster (or dendogram) algorithm.
+d3.layout.cluster = function() {
+ var hierarchy = d3.layout.hierarchy().sort(null).value(null),
+ separation = d3_layout_treeSeparation,
+ size = [1, 1]; // width, height
+
+ function cluster(d, i) {
+ var nodes = hierarchy.call(this, d, i),
+ root = nodes[0],
+ previousNode,
+ x = 0,
+ kx,
+ ky;
+
+ // First walk, computing the initial x & y values.
+ d3_layout_treeVisitAfter(root, function(node) {
+ var children = node.children;
+ if (children && children.length) {
+ node.x = d3_layout_clusterX(children);
+ node.y = d3_layout_clusterY(children);
+ } else {
+ node.x = previousNode ? x += separation(node, previousNode) : 0;
+ node.y = 0;
+ previousNode = node;
+ }
+ });
+
+ // Compute the left-most, right-most, and depth-most nodes for extents.
+ var left = d3_layout_clusterLeft(root),
+ right = d3_layout_clusterRight(root),
+ x0 = left.x - separation(left, right) / 2,
+ x1 = right.x + separation(right, left) / 2;
+
+ // Second walk, normalizing x & y to the desired size.
+ d3_layout_treeVisitAfter(root, function(node) {
+ node.x = (node.x - x0) / (x1 - x0) * size[0];
+ node.y = (1 - node.y / root.y) * size[1];
+ });
+
+ return nodes;
+ }
+
+ cluster.separation = function(x) {
+ if (!arguments.length) return separation;
+ separation = x;
+ return cluster;
+ };
+
+ cluster.size = function(x) {
+ if (!arguments.length) return size;
+ size = x;
+ return cluster;
+ };
+
+ return d3_layout_hierarchyRebind(cluster, hierarchy);
+};
+
+function d3_layout_clusterY(children) {
+ return 1 + d3.max(children, function(child) {
+ return child.y;
+ });
+}
+
+function d3_layout_clusterX(children) {
+ return children.reduce(function(x, child) {
+ return x + child.x;
+ }, 0) / children.length;
+}
+
+function d3_layout_clusterLeft(node) {
+ var children = node.children;
+ return children && children.length ? d3_layout_clusterLeft(children[0]) : node;
+}
+
+function d3_layout_clusterRight(node) {
+ var children = node.children, n;
+ return children && (n = children.length) ? d3_layout_clusterRight(children[n - 1]) : node;
+}
+// Node-link tree diagram using the Reingold-Tilford "tidy" algorithm
+d3.layout.tree = function() {
+ var hierarchy = d3.layout.hierarchy().sort(null).value(null),
+ separation = d3_layout_treeSeparation,
+ size = [1, 1]; // width, height
+
+ function tree(d, i) {
+ var nodes = hierarchy.call(this, d, i),
+ root = nodes[0];
+
+ function firstWalk(node, previousSibling) {
+ var children = node.children,
+ layout = node._tree;
+ if (children && (n = children.length)) {
+ var n,
+ firstChild = children[0],
+ previousChild,
+ ancestor = firstChild,
+ child,
+ i = -1;
+ while (++i < n) {
+ child = children[i];
+ firstWalk(child, previousChild);
+ ancestor = apportion(child, previousChild, ancestor);
+ previousChild = child;
+ }
+ d3_layout_treeShift(node);
+ var midpoint = .5 * (firstChild._tree.prelim + child._tree.prelim);
+ if (previousSibling) {
+ layout.prelim = previousSibling._tree.prelim + separation(node, previousSibling);
+ layout.mod = layout.prelim - midpoint;
+ } else {
+ layout.prelim = midpoint;
+ }
+ } else {
+ if (previousSibling) {
+ layout.prelim = previousSibling._tree.prelim + separation(node, previousSibling);
+ }
+ }
+ }
+
+ function secondWalk(node, x) {
+ node.x = node._tree.prelim + x;
+ var children = node.children;
+ if (children && (n = children.length)) {
+ var i = -1,
+ n;
+ x += node._tree.mod;
+ while (++i < n) {
+ secondWalk(children[i], x);
+ }
+ }
+ }
+
+ function apportion(node, previousSibling, ancestor) {
+ if (previousSibling) {
+ var vip = node,
+ vop = node,
+ vim = previousSibling,
+ vom = node.parent.children[0],
+ sip = vip._tree.mod,
+ sop = vop._tree.mod,
+ sim = vim._tree.mod,
+ som = vom._tree.mod,
+ shift;
+ while (vim = d3_layout_treeRight(vim), vip = d3_layout_treeLeft(vip), vim && vip) {
+ vom = d3_layout_treeLeft(vom);
+ vop = d3_layout_treeRight(vop);
+ vop._tree.ancestor = node;
+ shift = vim._tree.prelim + sim - vip._tree.prelim - sip + separation(vim, vip);
+ if (shift > 0) {
+ d3_layout_treeMove(d3_layout_treeAncestor(vim, node, ancestor), node, shift);
+ sip += shift;
+ sop += shift;
+ }
+ sim += vim._tree.mod;
+ sip += vip._tree.mod;
+ som += vom._tree.mod;
+ sop += vop._tree.mod;
+ }
+ if (vim && !d3_layout_treeRight(vop)) {
+ vop._tree.thread = vim;
+ vop._tree.mod += sim - sop;
+ }
+ if (vip && !d3_layout_treeLeft(vom)) {
+ vom._tree.thread = vip;
+ vom._tree.mod += sip - som;
+ ancestor = node;
+ }
+ }
+ return ancestor;
+ }
+
+ // Initialize temporary layout variables.
+ d3_layout_treeVisitAfter(root, function(node, previousSibling) {
+ node._tree = {
+ ancestor: node,
+ prelim: 0,
+ mod: 0,
+ change: 0,
+ shift: 0,
+ number: previousSibling ? previousSibling._tree.number + 1 : 0
+ };
+ });
+
+ // Compute the layout using Buchheim et al.'s algorithm.
+ firstWalk(root);
+ secondWalk(root, -root._tree.prelim);
+
+ // Compute the left-most, right-most, and depth-most nodes for extents.
+ var left = d3_layout_treeSearch(root, d3_layout_treeLeftmost),
+ right = d3_layout_treeSearch(root, d3_layout_treeRightmost),
+ deep = d3_layout_treeSearch(root, d3_layout_treeDeepest),
+ x0 = left.x - separation(left, right) / 2,
+ x1 = right.x + separation(right, left) / 2,
+ y1 = deep.depth || 1;
+
+ // Clear temporary layout variables; transform x and y.
+ d3_layout_treeVisitAfter(root, function(node) {
+ node.x = (node.x - x0) / (x1 - x0) * size[0];
+ node.y = node.depth / y1 * size[1];
+ delete node._tree;
+ });
+
+ return nodes;
+ }
+
+ tree.separation = function(x) {
+ if (!arguments.length) return separation;
+ separation = x;
+ return tree;
+ };
+
+ tree.size = function(x) {
+ if (!arguments.length) return size;
+ size = x;
+ return tree;
+ };
+
+ return d3_layout_hierarchyRebind(tree, hierarchy);
+};
+
+function d3_layout_treeSeparation(a, b) {
+ return a.parent == b.parent ? 1 : 2;
+}
+
+// function d3_layout_treeSeparationRadial(a, b) {
+// return (a.parent == b.parent ? 1 : 2) / a.depth;
+// }
+
+function d3_layout_treeLeft(node) {
+ var children = node.children;
+ return children && children.length ? children[0] : node._tree.thread;
+}
+
+function d3_layout_treeRight(node) {
+ var children = node.children,
+ n;
+ return children && (n = children.length) ? children[n - 1] : node._tree.thread;
+}
+
+function d3_layout_treeSearch(node, compare) {
+ var children = node.children;
+ if (children && (n = children.length)) {
+ var child,
+ n,
+ i = -1;
+ while (++i < n) {
+ if (compare(child = d3_layout_treeSearch(children[i], compare), node) > 0) {
+ node = child;
+ }
+ }
+ }
+ return node;
+}
+
+function d3_layout_treeRightmost(a, b) {
+ return a.x - b.x;
+}
+
+function d3_layout_treeLeftmost(a, b) {
+ return b.x - a.x;
+}
+
+function d3_layout_treeDeepest(a, b) {
+ return a.depth - b.depth;
+}
+
+function d3_layout_treeVisitAfter(node, callback) {
+ function visit(node, previousSibling) {
+ var children = node.children;
+ if (children && (n = children.length)) {
+ var child,
+ previousChild = null,
+ i = -1,
+ n;
+ while (++i < n) {
+ child = children[i];
+ visit(child, previousChild);
+ previousChild = child;
+ }
+ }
+ callback(node, previousSibling);
+ }
+ visit(node, null);
+}
+
+function d3_layout_treeShift(node) {
+ var shift = 0,
+ change = 0,
+ children = node.children,
+ i = children.length,
+ child;
+ while (--i >= 0) {
+ child = children[i]._tree;
+ child.prelim += shift;
+ child.mod += shift;
+ shift += child.shift + (change += child.change);
+ }
+}
+
+function d3_layout_treeMove(ancestor, node, shift) {
+ ancestor = ancestor._tree;
+ node = node._tree;
+ var change = shift / (node.number - ancestor.number);
+ ancestor.change += change;
+ node.change -= change;
+ node.shift += shift;
+ node.prelim += shift;
+ node.mod += shift;
+}
+
+function d3_layout_treeAncestor(vim, node, ancestor) {
+ return vim._tree.ancestor.parent == node.parent
+ ? vim._tree.ancestor
+ : ancestor;
+}
+// Squarified Treemaps by Mark Bruls, Kees Huizing, and Jarke J. van Wijk
+// Modified to support a target aspect ratio by Jeff Heer
+d3.layout.treemap = function() {
+ var hierarchy = d3.layout.hierarchy(),
+ round = Math.round,
+ size = [1, 1], // width, height
+ padding = null,
+ pad = d3_layout_treemapPadNull,
+ sticky = false,
+ stickies,
+ ratio = 0.5 * (1 + Math.sqrt(5)); // golden ratio
+
+ // Compute the area for each child based on value & scale.
+ function scale(children, k) {
+ var i = -1,
+ n = children.length,
+ child,
+ area;
+ while (++i < n) {
+ area = (child = children[i]).value * (k < 0 ? 0 : k);
+ child.area = isNaN(area) || area <= 0 ? 0 : area;
+ }
+ }
+
+ // Recursively arranges the specified node's children into squarified rows.
+ function squarify(node) {
+ var children = node.children;
+ if (children && children.length) {
+ var rect = pad(node),
+ row = [],
+ remaining = children.slice(), // copy-on-write
+ child,
+ best = Infinity, // the best row score so far
+ score, // the current row score
+ u = Math.min(rect.dx, rect.dy), // initial orientation
+ n;
+ scale(remaining, rect.dx * rect.dy / node.value);
+ row.area = 0;
+ while ((n = remaining.length) > 0) {
+ row.push(child = remaining[n - 1]);
+ row.area += child.area;
+ if ((score = worst(row, u)) <= best) { // continue with this orientation
+ remaining.pop();
+ best = score;
+ } else { // abort, and try a different orientation
+ row.area -= row.pop().area;
+ position(row, u, rect, false);
+ u = Math.min(rect.dx, rect.dy);
+ row.length = row.area = 0;
+ best = Infinity;
+ }
+ }
+ if (row.length) {
+ position(row, u, rect, true);
+ row.length = row.area = 0;
+ }
+ children.forEach(squarify);
+ }
+ }
+
+ // Recursively resizes the specified node's children into existing rows.
+ // Preserves the existing layout!
+ function stickify(node) {
+ var children = node.children;
+ if (children && children.length) {
+ var rect = pad(node),
+ remaining = children.slice(), // copy-on-write
+ child,
+ row = [];
+ scale(remaining, rect.dx * rect.dy / node.value);
+ row.area = 0;
+ while (child = remaining.pop()) {
+ row.push(child);
+ row.area += child.area;
+ if (child.z != null) {
+ position(row, child.z ? rect.dx : rect.dy, rect, !remaining.length);
+ row.length = row.area = 0;
+ }
+ }
+ children.forEach(stickify);
+ }
+ }
+
+ // Computes the score for the specified row, as the worst aspect ratio.
+ function worst(row, u) {
+ var s = row.area,
+ r,
+ rmax = 0,
+ rmin = Infinity,
+ i = -1,
+ n = row.length;
+ while (++i < n) {
+ if (!(r = row[i].area)) continue;
+ if (r < rmin) rmin = r;
+ if (r > rmax) rmax = r;
+ }
+ s *= s;
+ u *= u;
+ return s
+ ? Math.max((u * rmax * ratio) / s, s / (u * rmin * ratio))
+ : Infinity;
+ }
+
+ // Positions the specified row of nodes. Modifies `rect`.
+ function position(row, u, rect, flush) {
+ var i = -1,
+ n = row.length,
+ x = rect.x,
+ y = rect.y,
+ v = u ? round(row.area / u) : 0,
+ o;
+ if (u == rect.dx) { // horizontal subdivision
+ if (flush || v > rect.dy) v = v ? rect.dy : 0; // over+underflow
+ while (++i < n) {
+ o = row[i];
+ o.x = x;
+ o.y = y;
+ o.dy = v;
+ x += o.dx = v ? round(o.area / v) : 0;
+ }
+ o.z = true;
+ o.dx += rect.x + rect.dx - x; // rounding error
+ rect.y += v;
+ rect.dy -= v;
+ } else { // vertical subdivision
+ if (flush || v > rect.dx) v = v ? rect.dx : 0; // over+underflow
+ while (++i < n) {
+ o = row[i];
+ o.x = x;
+ o.y = y;
+ o.dx = v;
+ y += o.dy = v ? round(o.area / v) : 0;
+ }
+ o.z = false;
+ o.dy += rect.y + rect.dy - y; // rounding error
+ rect.x += v;
+ rect.dx -= v;
+ }
+ }
+
+ function treemap(d) {
+ var nodes = stickies || hierarchy(d),
+ root = nodes[0];
+ root.x = 0;
+ root.y = 0;
+ root.dx = size[0];
+ root.dy = size[1];
+ if (stickies) hierarchy.revalue(root);
+ scale([root], root.dx * root.dy / root.value);
+ (stickies ? stickify : squarify)(root);
+ if (sticky) stickies = nodes;
+ return nodes;
+ }
+
+ treemap.size = function(x) {
+ if (!arguments.length) return size;
+ size = x;
+ return treemap;
+ };
+
+ treemap.padding = function(x) {
+ if (!arguments.length) return padding;
+
+ function padFunction(node) {
+ var p = x.call(treemap, node, node.depth);
+ return p == null
+ ? d3_layout_treemapPadNull(node)
+ : d3_layout_treemapPad(node, typeof p === "number" ? [p, p, p, p] : p);
+ }
+
+ function padConstant(node) {
+ return d3_layout_treemapPad(node, x);
+ }
+
+ var type;
+ pad = (padding = x) == null ? d3_layout_treemapPadNull
+ : (type = typeof x) === "function" ? padFunction
+ : type === "number" ? (x = [x, x, x, x], padConstant)
+ : padConstant;
+ return treemap;
+ };
+
+ treemap.round = function(x) {
+ if (!arguments.length) return round != Number;
+ round = x ? Math.round : Number;
+ return treemap;
+ };
+
+ treemap.sticky = function(x) {
+ if (!arguments.length) return sticky;
+ sticky = x;
+ stickies = null;
+ return treemap;
+ };
+
+ treemap.ratio = function(x) {
+ if (!arguments.length) return ratio;
+ ratio = x;
+ return treemap;
+ };
+
+ return d3_layout_hierarchyRebind(treemap, hierarchy);
+};
+
+function d3_layout_treemapPadNull(node) {
+ return {x: node.x, y: node.y, dx: node.dx, dy: node.dy};
+}
+
+function d3_layout_treemapPad(node, padding) {
+ var x = node.x + padding[3],
+ y = node.y + padding[0],
+ dx = node.dx - padding[1] - padding[3],
+ dy = node.dy - padding[0] - padding[2];
+ if (dx < 0) { x += dx / 2; dx = 0; }
+ if (dy < 0) { y += dy / 2; dy = 0; }
+ return {x: x, y: y, dx: dx, dy: dy};
+}
+})();
diff --git a/visualize/static/d3.layout.min.js b/visualize/static/d3.layout.min.js
new file mode 100644
index 0000000..a6a893e
--- /dev/null
+++ b/visualize/static/d3.layout.min.js
@@ -0,0 +1 @@
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diff --git a/visualize/static/visualize.js b/visualize/static/visualize.js
new file mode 100644
index 0000000..e73171e
--- /dev/null
+++ b/visualize/static/visualize.js
@@ -0,0 +1,253 @@
+function packages_treemap(chart_id, orderings, default_order) {
+ var jq_div = jQuery(chart_id),
+ color = d3.scale.category20();
+ var key_func = function(d) { return d.key; };
+ var value_package_count = function(d) { return d.count; },
+ value_flagged_count = function(d) { return d.flagged; },
+ value_compressed_size = function(d) { return d.csize; },
+ value_installed_size = function(d) { return d.isize; };
+
+ /* tag the function so when we display, we can format filesizes */
+ value_package_count.is_size = value_flagged_count.is_size = false;
+ value_compressed_size.is_size = value_installed_size.is_size = true;
+
+ var treemap = d3.layout.treemap()
+ .size([jq_div.width(), jq_div.height()])
+ /*.sticky(true)*/
+ .value(value_package_count)
+ .sort(function(a, b) { return a.key < b.key; })
+ .children(function(d) { return d.data; });
+
+ var cell_html = function(d) {
+ if (d.children) {
+ return "";
+ }
+ var valuefunc = treemap.value();
+ var value = valuefunc(d);
+ if (valuefunc.is_size && value !== undefined) {
+ value = format_filesize(value);
+ }
+ return "<span>" + d.name + ": " + value + "</span>";
+ };
+
+ var d3_div = d3.select(jq_div.get(0));
+
+ var prop_px = function(prop, offset) {
+ return function(d) {
+ var dist = d[prop] + offset;
+ if (dist > 0) {
+ return dist + "px";
+ }
+ else {
+ return "0px";
+ }
+ };
+ };
+
+ var cell = function() {
+ /* the -1 offset comes from the border width we use in the CSS */
+ this.style("left", prop_px("x", 0)).style("top", prop_px("y", 0))
+ .style("width", prop_px("dx", -1)).style("height", prop_px("dy", -1));
+ };
+
+ var fetch_for_ordering = function(order) {
+ d3.json(order.url, function(json) {
+ var nodes = d3_div.data([json]).selectAll("div")
+ .data(treemap.nodes, key_func);
+ /* start out new nodes in the center of the picture area */
+ var w_center = jq_div.width() / 2;
+ h_center = jq_div.height() / 2;
+ nodes.enter().append("div")
+ .attr("class", "treemap-cell")
+ .attr("title", function(d) { return d.name; })
+ .style("left", w_center + "px").style("top", h_center + "px")
+ .style("width", "0px").style("height", "0px")
+ .style("display", function(d) { return d.children ? "none" : null; })
+ .html(cell_html);
+ nodes.transition().duration(1500)
+ .style("background-color", function(d) { return d.children ? null : color(d[order.color_attr]); })
+ .call(cell);
+ nodes.exit().transition().duration(1500).remove();
+ });
+ };
+
+ /* start the callback for the default order */
+ fetch_for_ordering(orderings[default_order]);
+
+ var make_scale_button = function(name, valuefunc) {
+ var button_id = chart_id + "-" + name;
+ /* upon button click, attach new value function and redraw all boxes
+ * accordingly */
+ d3.select(button_id).on("click", function() {
+ d3_div.selectAll("div")
+ .data(treemap.value(valuefunc), key_func)
+ .html(cell_html)
+ .transition().duration(1500).call(cell);
+
+ /* drop off the '#' sign to convert id to a class prefix */
+ d3.selectAll("." + chart_id.substring(1) + "-scaleby")
+ .classed("active", false);
+ d3.select(button_id).classed("active", true);
+ });
+ };
+
+ /* each scale button tweaks our value, e.g. net size function */
+ make_scale_button("count", value_package_count);
+ make_scale_button("flagged", value_flagged_count);
+ make_scale_button("csize", value_compressed_size);
+ make_scale_button("isize", value_installed_size);
+
+ var make_group_button = function(name, order) {
+ var button_id = chart_id + "-" + name;
+ d3.select(button_id).on("click", function() {
+ fetch_for_ordering(order);
+
+ /* drop off the '#' sign to convert id to a class prefix */
+ d3.selectAll("." + chart_id.substring(1) + "-groupby")
+ .classed("active", false);
+ d3.select(button_id).classed("active", true);
+ });
+ };
+
+ jQuery.each(orderings, function(k, v) {
+ make_group_button(k, v);
+ });
+
+ var resize_timeout = null;
+ var real_resize = function() {
+ resize_timeout = null;
+ d3_div.selectAll("div")
+ .data(treemap.size([jq_div.width(), jq_div.height()]), key_func)
+ .call(cell);
+ };
+ jQuery(window).resize(function() {
+ if (resize_timeout) {
+ clearTimeout(resize_timeout);
+ }
+ resize_timeout = setTimeout(real_resize, 200);
+ });
+}
+
+function developer_keys(chart_id, data_url) {
+ var jq_div = jQuery(chart_id),
+ r = 10;
+
+ var force = d3.layout.force()
+ .gravity(0.1)
+ .charge(-200)
+ .linkStrength(0.2)
+ .size([jq_div.width(), jq_div.height()]);
+
+ var svg = d3.select(chart_id)
+ .append("svg");
+
+ d3.json(data_url, function(json) {
+ var fill = d3.scale.category20();
+
+ var index_for_key = function(key) {
+ var i;
+ key = key.slice(-8);
+ for (i = 0; i < json.nodes.length; i++) {
+ var node_key = json.nodes[i].key;
+ if (node_key && node_key.slice(-8) === key) {
+ return i;
+ }
+ }
+ };
+
+ /* filter edges to only include those that we have two nodes for */
+ var edges = jQuery.grep(json.edges, function(d, i) {
+ d.source = index_for_key(d.signer);
+ d.target = index_for_key(d.signee);
+ return d.source >= 0 && d.target >= 0;
+ });
+
+ jQuery.map(json.nodes, function(d, i) { d.master_sigs = 0; });
+ jQuery.map(edges, function(d, i) {
+ if (json.nodes[d.source].group === "master") {
+ json.nodes[d.target].master_sigs += 1;
+ }
+ });
+ jQuery.map(json.nodes, function(d, i) {
+ if (d.group === "dev" || d.group === "tu") {
+ d.approved = d.master_sigs >= 3;
+ } else {
+ d.approved = null;
+ }
+ });
+
+ var link = svg.selectAll("line")
+ .data(edges)
+ .enter()
+ .append("line");
+
+ var node = svg.selectAll("circle")
+ .data(json.nodes)
+ .enter().append("circle")
+ .attr("r", function(d) {
+ switch (d.group) {
+ case "master":
+ return r * 1.6 - 0.75;
+ case "cacert":
+ return r * 1.4 - 0.75;
+ case "dev":
+ case "tu":
+ default:
+ return r - 0.75;
+ }
+ })
+ .style("fill", function(d) { return fill(d.group); })
+ .style("stroke", function(d) {
+ if (d.approved === null) {
+ return d3.rgb(fill(d.group)).darker();
+ } else if (d.approved) {
+ return "green";
+ } else {
+ return "red";
+ }
+ })
+ .call(force.drag);
+ node.append("title").text(function(d) { return d.name; });
+
+ var distance = function(d, i) {
+ /* place a long line between all master keys and other keys.
+ * however, other connected clusters should be close together. */
+ if (d.source.group === "master" || d.target.group === "master") {
+ return 200;
+ } else {
+ return 50;
+ }
+ };
+
+ var tick = function() {
+ var offset = r * 2,
+ w = jq_div.width(),
+ h = jq_div.height();
+ node.attr("cx", function(d) { return (d.x = Math.max(offset, Math.min(w - offset, d.x))); })
+ .attr("cy", function(d) { return (d.y = Math.max(offset, Math.min(h - offset, d.y))); });
+
+ link.attr("x1", function(d) { return d.source.x; })
+ .attr("y1", function(d) { return d.source.y; })
+ .attr("x2", function(d) { return d.target.x; })
+ .attr("y2", function(d) { return d.target.y; });
+ };
+
+ force.nodes(json.nodes)
+ .links(edges)
+ .linkDistance(distance)
+ .on("tick", tick)
+ .start();
+ });
+
+ var resize_timeout = null;
+ var real_resize = function() {
+ resize_timeout = null;
+ force.size([jq_div.width(), jq_div.height()]);
+ };
+ jQuery(window).resize(function() {
+ if (resize_timeout) {
+ clearTimeout(resize_timeout);
+ }
+ resize_timeout = setTimeout(real_resize, 200);
+ });
+}
generated by cgit v1.2.3-24-g4f1b (git 2.32.0) at 2024-11-21 20:33:05 +0100