#!/bin/bash

#NICE="blacktext linewidth 4.0 \"Helvetica\" 16 "

# try thinner lines
NICE="blacktext linewidth 1.0 \"Helvetica\" 16 "

if [ "$1" == "--eps" ]; then
    EXT="eps"
    TERMINAL="postscript color eps $NICE"
    shift
else
    EXT="png"
    TERMINAL="png picsize 1024 768"
fi


OUT=$1
XLABEL=$2
YLABEL=$3
TITLE=$4
shift 4

PLOT="plot "


while [ ! -z "$1" ] && [ ! -z "$2" ] && [ ! -z "$3" ] && [ ! -z "$4" ]; do
    CSV=$1
    COL1=$2
    COL2=$3
    NAME=$4
    PLOT="$PLOT '${CSV}' using ${COL1}:${COL2} title '${NAME}' with points"
    shift 4
    if [ ! -z "$1" ]; then
	PLOT="$PLOT, "
    fi
done

#echo $OUT
#echo $XLABEL
#echo $YLABEL
#echo $TITLE
#echo $PLOT

if [ "$PLOT" = "plot " ]; then
    echo "Usage: $0 [--eps] <outfile> <X label> <Y label> <title> "\
	"(<csv file> <column1> <column2> <label>)+"
    exit 1
fi

OUT="${OUT}.${EXT}"

# fixup csv file, gnuplot is picky
#sed -i -e 's/,\([^ ]\)/, \1/g' $CSV1

gnuplot <<EOM
set terminal $TERMINAL
set out '/dev/null'
$YRANGE
$XRANGE
$PLOT
set ylabel  '$YLABEL'
set xlabel  '$XLABEL'
set title '$TITLE'
set key below
set data style points
set out '$OUT'
replot
set out
EOM

if [ "$EXT" == "eps" ]; then
    ps2pdf -dEPSCrop $OUT
fi