#! /bin/bash
# Last edited on 2009-08-22 18:35:23 by stolfi

usage="${0##*/} ORDER PLTFILE"

if [ $# -ne 2 ]; then
  echo "usage: ${usage}"; exit 1
fi

order="$1"; shift
pltfile="$1"; shift

name=${pltfile%.*}

cola=$((2 * order + 2))
coln=$((2 * order + 3))
echo "plotting columns ${cola} and ${coln}" 1>&2
if [ ${order} -eq 0 ]; then
  titset='set title "'"${name}"'"'
  key="value"
else
  titset=''
  key="D${order}"
fi

gnuplot -background white <<EOF
set term png small \
  xffffff x000000 x404040 \
  xff0000 xcc5500 x448800 x009900 x008888 x0033ff x7700ff x990077
  
set size 1,0.33
set output
${titset}

plot \
  "${pltfile}" using 1:${cola}  title "${key}(A)" with linespoints, \
  "${pltfile}" using 1:${coln}  title "${key}(N)" with linespoints, \
  (abs(x)>0.02 ? 0/0 : 0.1) notitle with lines linetype 0, \
  (abs(x)>0.02 ? 0/0 : -0.1) notitle with lines linetype 0

EOF