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ben-wpan/usrp/plscan

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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 [-30:-5]
set title "Received signal strength"
set data style errorlines
plot \
`for n in $@; do
if [ "$n" = "${n#*=}" ]; then
file=$n
title=${n%.*}
else
file=${n#*=}
title=${n%%=*}
fi
echo -n $comma \'$file\' title \'$title\'
comma=,
done`
EOF