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10
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1 #!/usr/bin/env python
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2
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3 import re, datetime, time, pylab, matplotlib
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4 daterestr = '([0-9]{4}/[0-9]{2}/[0-9]{2} [0-9]{2}:[0-9]{2}:[0-9]{2}): '
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5 targtre = re.compile(daterestr + 'target temperature - (-?[0-9]+\.[0-9]+)')
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6 linere = re.compile(daterestr + '(-?[0-9]+\.[0-9]+)\s+(-?[0-9]+\.[0-9]+)\s+(-?[0-9]+\.[0-9]+)\s+([a-z-]+)\s+([a-z-]+)')
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7 datefmt = '%Y/%m/%d %H:%M:%S'
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8 tz = matplotlib.pytz.timezone('Australia/Adelaide')
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9
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10 targetTemp = 18.0
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11 logfile = '/tmp/beermon.log'
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12 start = time.mktime(time.strptime("2007/09/24 00:00:00", datefmt))
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13 #end = time.mktime(time.strptime("2007/09/28 00:00:00", datefmt))
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14 end = None
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15
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16 f = open(logfile)
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17
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18 times = []
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19 fermTemps = []
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20 fridgeTemps = []
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21 ambTemps = []
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22 states = []
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23 targetTemps = []
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24
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25 for line in f:
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26 m = linere.match(line)
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27 if (m == None):
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28 m = targtre.match(line)
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29 if (m != None):
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30 t = time.mktime(time.strptime(m.group(1), datefmt))
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31 if (t < start or t > end):
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32 continue
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33
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34 targetTemp = float(m.group(2))
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35 continue
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36 else:
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37 continue
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38
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39 t = time.mktime(time.strptime(m.group(1), datefmt))
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40 if (start != None and t < start):
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41 continue
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42
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43 if (end != None and t > end):
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44 continue
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45
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46 fermTemp = float(m.group(2))
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47 fridgeTemp = float(m.group(3))
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48 ambTemp = float(m.group(4))
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49 state = m.group(5)
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50
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51 times.append(t / (24 * 60 * 60)) # Is in float days
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52 fermTemps.append(fermTemp)
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53 fridgeTemps.append(fridgeTemp)
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54 ambTemps.append(ambTemp)
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55 states.append(state)
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56 targetTemps.append(targetTemp)
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57
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58 print "From %s to %s" % (time.asctime(time.localtime(times[0] * (24 * 60 * 60))),
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59 time.asctime(time.localtime(times[-1] * (24 * 60 * 60))))
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60 fig = pylab.figure()
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61 ax = fig.add_subplot(111)
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62 p = ax.plot(times, fermTemps, times, fridgeTemps, times, ambTemps, times, targetTemps)
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63 ax.set_autoscale_on(True)
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64 hoursFmt = pylab.DateFormatter('%d %b %H:%M', tz = tz)
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65 ax.xaxis.set_major_formatter(hoursFmt)
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66 labels = ax.get_xticklabels()
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67 pylab.setp(labels, 'rotation', 5.0)
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68 ax.grid(True)
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69 ax.set_xlabel('time(UTC)')
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70 ax.set_ylabel('Temperature(C)')
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71 pylab.legend((p[0], p[1], p[2], p[3]), ('Fermenter', 'Fridge', 'Ambient', 'Target'), 'best')
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72 #pylab.legend((p[0], p[1], p[2]), ('Fermenter', 'Fridge', 'Ambient'), 'best')
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73 #pylab.axhline(y = targetTemp)
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74 pylab.show()
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