Mercurial > ~darius > hgwebdir.cgi > wh1080

annotate plots/myplot @ 6:e0b32014ed14

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Change defaul update interval to once a minute.
author Daniel O'Connor <darius@dons.net.au>
date Thu, 11 Feb 2010 12:45:22 +1030
parents 9dab44dcb331
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 #!/bin/sh
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2 #
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3 # $Id: myplot,v 1.2 2010/01/10 05:06:54 grog Exp $
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4 #
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5 # Kludge page to generate plots
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6 # These may need changing
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7 STATION=Dereel
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8 TABLE=observations
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9 STARTDATE="2009-12-23"
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10 ENDDATE="2009-12-24"
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11 COMMON=/home/grog/src/weather/WH-1080/plots/plot-common.gnuplot
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12 GRAPHFILE=/var/tmp/myplot.foo
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13 OUTFILE=/home/grog/public_html/weather/myplot.png
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14
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15 # Generate some constants.
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16 # Calculate time zone offset from UTC
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17 # Convert to seconds at UTC
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18 NOW=`date +%Y%m%d%H%M`
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19 UTC=`TZ=GMT date -j $NOW +%s`
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20 # And in local time zone
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21 LOCAL=`date -j $NOW +%s`
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22 # The difference is the time zone offset.
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23 TZOFFSET=`expr $UTC - $LOCAL`
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24 # Number of seconds in a day
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25 DAYSECS=86400
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26 # 2000-1-1 0:0:0 UTC, the gnuplot epoch. Or so it should be, but for
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27 # some reason my plots come out offset by 2 hours. Use GNUFUDGE until
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28 # I find out why.
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29 GNUFUDGE=7200
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30 Y2K=`expr 946684800`
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31 MY2K=`expr $Y2K + $TZOFFSET + $GNUFUDGE`
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32 # End of constant generation
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33
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34 # Frob these values
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35 STARTTIME=`date -j -f "%F %T" "$STARTDATE 0:0:0" +%s`
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36 # Adjust to gnu epoch
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37 GNUSTART=`expr $STARTTIME - $Y2K - $TZOFFSET - $GNUFUDGE`
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38 # midnight on the end day
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39 ENDTIME=`date -j -f "%F %T" "$ENDDATE 0:0:0" +%s`
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40 GNUEND=`expr $ENDTIME - $Y2K - $TZOFFSET - $GNUFUDGE`
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41 # echo $ENDTIME - $Y2K - $TZOFFSET - $GNUFUDGE
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42
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43 # echo end $ENDTIME start $STARTTIME
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44 DURATION=`expr $ENDTIME - $STARTTIME`
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45 # echo DURATION $DURATION
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46 # Decide how often to place the time ticks.
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47 if [ $DURATION -eq $DAYSECS ]; then # single day
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48 XTICS=10800 # 3 hours
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49 elif [ $DURATION -eq 172800 ]; then # 2 days
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50 XTICS=21600 # 6 hours
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51 elif [ $DURATION -le 345600 ]; then # up to 4 days
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52 XTICS=43200 # 6 hours
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53 elif [ $DURATION -le 864000 ]; then # up to 10 days
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54 XTICS=86400 # 6 hours
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55 elif [ $DURATION -le 864000 ]; then # up to 10 days
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56 XTICS=86400 # 1 day
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57 elif [ $DURATION -le 2592000 ]; then # up to 30 days
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58 XTICS=172800 # 2 days
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59 else # > 30 days
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60 XTICS=`expr $DURATION / 10` # just hack it
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61 fi
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62
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63 # echo DATE $STARTDATE ENDDATE $ENDDATE GNUEND $GNUEND DURATION $DURATION XTICS $XTICS
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64
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65 # **************************************************
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66 # End of setup crap
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67 # **************************************************
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68
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69 # Do the query
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70 MY2KP1=`expr $Y2K + $TZOFFSET + $GNUFUDGE - $DAYSECS`
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71 MY2KM1=`expr $Y2K + $TZOFFSET + $GNUFUDGE + $DAYSECS`
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72 echo "SELECT unix_timestamp(timestamp(date, time))-$MY2K, outside_temp from $TABLE WHERE station_id = '$STATION' and date >='$STARTDATE' AND date <= '$STARTDATE' ORDER by date, time;" | \
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73 mysql weather > $GRAPHFILE.1
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74 echo "SELECT unix_timestamp(timestamp(date, time))-$MY2KM1, outside_temp from $TABLE WHERE station_id = '$STATION' and date >='$ENDDATE' AND date <= '$ENDDATE' ORDER by date, time;" | \
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75 mysql weather > $GRAPHFILE.2
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76
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77 # And the plot
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78
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79 for GRAPHSIZE in "375,250" "1024, 720"; do
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80 OUTFILE=/home/grog/public_html/weather/myplot.$GRAPHSIZE.png
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81
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82 ( cat $COMMON
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83 cat << EOF
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84 set title "Temperature comparison"
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85 set ylabel "Temperature (°C)"
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86 plot "GRAPHFILE.1" using 1:2 title "23 December" with lines, \
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87 "GRAPHFILE.2" using 1:2 title "24 December" with lines
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88 EOF
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89 ) | sed "s:MIDNIGHT:$GNUSTART:; s:ENDTIME:$GNUEND:; s:GRAPHFILE:$GRAPHFILE:g; s:SIZE:$GRAPHSIZE:; s:OUTFILE:$OUTFILE:; s:SMOOTHED: (smoothed):; s:SMOOTH:smooth bezier:; s:XTICS:$XTICS:" | \
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90 gnuplot
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91 done