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-rwxr-xr-xplot.py103
1 files changed, 66 insertions, 37 deletions
diff --git a/plot.py b/plot.py
index 647a083..01def4c 100755
--- a/plot.py
+++ b/plot.py
@@ -27,28 +27,23 @@ argmax = 50000
#### start of config
-# If you change this you also need to change the create and graph lists below.
-# Also note that samples have to be in the same order every time (the key is currently ignored).
-samples_per_line=2
-
template_values = {
# 0 = everything from the input
# otherwise = only the last n
"total_samples": 0,
}
-# The 4th field of the DS lines is the heartbeat. If you sample at an
-# interval < that value you will not see a graph. Simply adjust if necessary.
-create = [
+# heartbeat. If you sample at an interval < that value you will not see a
+# graph. Simply adjust if necessary.
+heartbeat = 50
+
+create_prefix = [
# Index of the 0 after --start is used below. Adjust code if you
# change the amount of values before it.
'rrdtool','create',rrd_file,'--step','30','--start',0,
+]
- 'DS:temp1:GAUGE:50:U:U',
- 'DS:temp2:GAUGE:50:U:U',
- #'DS:hum1:GAUGE:50:U:U',
- 'DS:abshum1:GAUGE:50:U:U',
-
+create_suffix = [
'RRA:AVERAGE:0.5:1:$total_samples',
'RRA:MIN:0.5:1:$total_samples',
'RRA:MAX:0.5:1:$total_samples',
@@ -66,22 +61,18 @@ graph = [
'--right-axis-label', 'Humidity g/m³',
'--right-axis', '0.5:0',
#'--alt-autoscale',
- '-l','10','-u','35', '--rigid',
+ '-l','-5','-u','30', '--rigid',
'--left-axis-format', '%4.2lf',
'--right-axis-format', '%4.2lf',
-
- 'DEF:temp1='+rrd_file+':temp1:AVERAGE',
- 'LINE1:temp1#339966:temp 1\l',
- 'DEF:temp2='+rrd_file+':temp2:AVERAGE',
- 'LINE1:temp2#663399:temp 2\l',
- #'DEF:hum1='+rrd_file+':hum1:AVERAGE',
- #'CDEF:hum11=hum1,2,/',
- #'LINE1:hum11#996633:hum 1\l',
- 'DEF:abshum1='+rrd_file+':abshum1:AVERAGE',
- 'CDEF:abshum11=abshum1,2,*',
- 'LINE1:abshum11#996633:abshum 1\l',
]
+colors = [
+ '#339966',
+ '#663399',
+ '#993366',
+ '#336699',
+ ]
+
#### end of config
def chunker(seq, size):
@@ -93,27 +84,65 @@ if template_values["total_samples"] == 0:
# load samples
samples = []
+value_names = []
with open(log_file,"r") as f:
+ first_line = True
for line in f:
if calc_total_from_input:
template_values["total_samples"] += 1
- elem = line.split(' ')
+ elements = line.split(' ')
values = []
# timestamp
- values.append(int(elem[0]))
+ values.append(int(elements[0]))
# values
- for i in range(1, samples_per_line + 1):
- values.append(float(elem[i].split("=")[1]))
+ for i in range(1, len(elements)):
+ [key, value] = elements[i].split("=")
+ [elem_type, sensorID] = key.split(":")
+ if first_line:
+ value_names.append(key)
+
+ if elem_type == "t":
+ values.append(float(value))
+ elif elem_type == "h":
+ # absolute humidity
+ hum=float(value)
+ temp=values[i - 1]
+ # Source: https://carnotcycle.wordpress.com/2012/08/04/how-to-convert-relative-humidity-to-absolute-humidity/
+ abshum=(6.112 * math.e**(17.67 * temp / (temp + 243.5)) * hum * 2.1674) / (273.15+temp)
+ values.append(abshum)
+ else:
+ raise ValueError("Unhandled element type")
- # absolute humidity
- hum=float(elem[3].split("=")[1])
- temp=values[2]
- # Source: https://carnotcycle.wordpress.com/2012/08/04/how-to-convert-relative-humidity-to-absolute-humidity/
- abshum=(6.112 * math.e**(17.67 * temp / (temp + 243.5)) * hum * 2.1674) / (273.15+temp)
- values.append(abshum)
samples.append(values)
+ first_line = False
+
+create_values = []
+color_counter = 0
+for elem in value_names:
+ [elem_type, sensorID] = elem.split(":")
+ color = colors[color_counter]
+ color_counter = (color_counter + 1) % len(colors)
+ if elem_type == "t":
+ create_values.append("DS:temp{sensorID}:GAUGE:{heartbeat}:U:U".format(sensorID=sensorID, heartbeat=heartbeat))
+ graph.extend([
+ # TODO change color for each value. select from a list of defined colors
+ 'DEF:temp{sensorID}={rrd_file}:temp{sensorID}:AVERAGE'.format(sensorID=sensorID, rrd_file=rrd_file),
+ 'LINE1:temp{sensorID}{color}:temp {sensorID}\l'.format(sensorID=sensorID, color=color),
+ ])
+ elif elem_type == "h":
+ create_values.append("DS:abshum{sensorID}:GAUGE:{heartbeat}:U:U".format(sensorID=sensorID, heartbeat=heartbeat))
+ graph.extend([
+ # TODO change color for each value. select from a list of defined colors
+ 'DEF:abshum{sensorID}={rrd_file}:abshum{sensorID}:AVERAGE'.format(sensorID=sensorID, rrd_file=rrd_file),
+ 'CDEF:abshum{sensorID}_1=abshum{sensorID},2,*'.format(sensorID=sensorID),
+ 'LINE1:abshum{sensorID}_1{color}:abshum {sensorID}\l'.format(sensorID=sensorID, color=color),
+ ])
+ else:
+ raise ValueError("Unhandled element type")
+
+create = create_prefix + create_values + create_suffix
# create rrd
start_ts = samples[0][0]
@@ -126,7 +155,7 @@ for elem in create:
#print("creating rrdb:",create)
ret = subprocess.call(cmd)
if ret != 0:
- #print("ERROR calling: {}".format(" ".join(create)))
+ print("ERROR calling: {}".format(" ".join(create)))
sys.exit(1)
@@ -139,7 +168,7 @@ for group in chunker(samples, argmax):
ret = subprocess.call(cmd)
if ret != 0:
- #print("ERROR calling: {}".format(" ".join(cmd)))
+ print("ERROR calling: {}".format(" ".join(cmd)))
sys.exit(1)
@@ -148,7 +177,7 @@ graph[4] = str(start_ts)
graph[6] = str(end_ts)
ret = subprocess.call(graph)
if ret != 0:
- #print("ERROR calling: {}".format(" ".join(graph)))
+ print("ERROR calling: {}".format(" ".join(graph)))
sys.exit(1)
os.unlink(rrd_file)