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Diffstat (limited to 'script/livegraph.sh')
-rwxr-xr-x | script/livegraph.sh | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/script/livegraph.sh b/script/livegraph.sh new file mode 100755 index 0000000..67111bc --- /dev/null +++ b/script/livegraph.sh @@ -0,0 +1,38 @@ +#!/bin/bash + +if [[ $# -ne 1 ]] +then + echo "Reads the sensor.dat and distance.dat from a running Pasad" + echo "instance and draws a graph from them." + echo + echo "Usage:" + echo " $0 SOURCE" + echo "Arguments:" + echo " SOURCE an expression such that SOURCE/sensor.dat and" + echo " SOURCE/distance.dat can be used as arguments for" + echo " scp (e. g. user@host:/path/to/files)" + echo + echo "Note: Use ssh-add to avoid typing your SSH passphrase every second" + exit 1 +fi + +function plot() { + scp -i /home/andreas/.ssh/pasadpi_rsa -P 8022 "${SCP_EXPR}/sensor.dat" "${SCP_EXPR}/distance.dat" . + tail -1000 sensor.dat > sensor-1000.dat + tail -1000 distance.dat > distance-1000.dat + echo "set terminal png; set yrange [17000:17300]; set y2range [0:300]; set ytics nomirror; set y2tics nomirror; set title 'Midbro/PASAD demo'; set ylabel 'sensor value'; set y2label 'distance'; plot 'sensor-1000.dat' using 0:1 with line title 'sensor value', 'distance-1000.dat' using 0:1 axis x1y2 with line title 'distance'" | gnuplot > live-tmp.png + mv live-tmp.png live.png +} + +SCP_EXPR=$1 + +echo 0 > sensor.dat +echo 0 > distance.dat +plot +feh -x --reload 0.1 live.png & + +while true +do + sleep 0.1 + plot +done |