1 files changed, 49 insertions, 0 deletions
diff --git a/envmon/draw-graph.py b/envmon/draw-graph.py
new file mode 100755
index 0000000..4e9d637
--- /dev/null
+++ b/envmon/draw-graph.py
@@ -0,0 +1,49 @@
+#!/usr/bin/python
+import colorgen
+import rrdtool
+import time
+import onewire
+import sys
+
+dir_prefix = '/home/nihilus/envmon/'
+
+datasets = sorted([ (sensor, 'onewire-temp-%s.rrd' % sensor) for sensor in onewire.sensors() ], key = lambda x:x[0])
+datasets += [ ('Outside', 'env-outside.rrd') ]
+
+def graph(name, duration):
+	print >>sys.stderr, "Graphing %s" % name
+	end_struct = time.localtime(time.time() - 450)
+	end = time.mktime(end_struct) - end_struct.tm_sec - 60 * (end_struct.tm_min % 5)
+
+	prefix = [
+		name,
+		'-E',
+		'--end', '%d' % end,
+		'--start', 'end-%ds' % duration,
+		'--width', '800',
+		'--height', '300'
+	]
+	
+	body = []
+	cg = colorgen.ColorGen()
+	for dataset_name, dataset_rrd in datasets:
+		body.append('DEF:temperature-%(name)s=%(filename)s:temperature:AVERAGE:start=end-%(duration)d' % {
+				'name': dataset_name,
+				'filename': dir_prefix + dataset_rrd,
+				'duration': duration + 3600
+		})
+		color = cg.get_next()
+		color = (int(color[0] * 255), int(color[1] * 255), int(color[2] * 255))
+		body.append('LINE2:temperature-%(name)s#%(r)02x%(g)02x%(b)02x:%(name)s' % {
+			'name': dataset_name,
+			'r': color[0],
+			'g': color[1],
+			'b': color[2]
+		})
+	rrdtool.graph(prefix + body)
+	print >>sys.stderr, "Done with %s" % name
+
+graph('env-day.png', 86400)
+graph('env-week.png', 604800)
+graph('env-month.png', 2592000)
+graph('env-year.png', 31557600)