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annotate README @ 11:d3b5e4251950

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Use COUNTER not DERIVE (duh)
author Daniel O'Connor <darius@dons.net.au>
date Mon, 25 Nov 2013 23:43:17 +1030
parents 139e267c9965
children
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1 An RRD can be created like so..
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3 rrdtool create ~/meter.rrd \
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4 DS:import:COUNTER:600:U:U \
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5 DS:export:COUNTER:600:U:U \
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6 RRA:AVERAGE:0.5:1:105120 \
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7 RRA:AVERAGE:0.5:12:105120 \
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8 RRA:MAX:0.5:1:105120 \
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9 RRA:MAX:0.5:12:105120 \
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10 RRA:MIN:0.5:1:10512 \
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11 RRA:MIN:0.5:12:105120
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13 Then data added with..
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14 rrdtool update ~/meter.rrd `ssh -ay -i ~/.ssh/id_rpi pi@raspberrypi python iec1107/iec1107.py -r /dev/ttyUSB0`
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16 Graph with..
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17 rrdtool graph ~/html/power-day.png --start -86400 -t "Power import/export (last 24 hours)"\
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18 DEF:import=$HOME/meter.rrd:import:AVERAGE \
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19 DEF:export=$HOME/meter.rrd:export:AVERAGE \
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20 AREA:import\#00FF00:"Imported (Wh)" \
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21 LINE1:export\#0000FF:"Exported (Wh)"
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