ben-wpan/usrp/plscan

#!/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 \'${n%.*}\'
     comma=,
   done`
EOF