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ben-wpan/usrp/plscan
Werner Almesberger 3684c0765a usrp/: new tools to run, evaluate, and plot a full frequency scan
- usrp/fscan: perform a frequency scan in my test setup
- usrp/evscan: determine the frequency-dependent signal strength from a
  frequency scan
- usrp/plscan: plot one or more data sets produced by evscan
2010-11-17 13:12:56 -03:00

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#!/bin/sh
usage()
{
echo "usage: $0 [-o pngfile] file ..." 1>&2
exit 1
}
if [ "X$1" = X-o ]; then
out=$2
shift 2
fi
[ "$1" ] || usage
[ "${1#-}" = "$1" ] || usage
gnuplot -persist <<EOF
`[ "$out" ] && ( echo set term png\;; echo set output \'$out\'; )`
set xlabel "MHz"
set ylabel "dB"
set xrange [2402:2483]
set yrange [-35:-25]
set title "Received signal strength"
set data style errorlines
plot \
`for n in $@; do
echo -n $comma \'$n\' title \'\`echo "$n" | sed "s/\..*//"\`\'
comma=,
done`
EOF