SIDSuite/sidplot at master · patchvonbraun/SIDSuite · GitHub

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#!/bin/sh
COMB=NONE
fcnt=0
while [ "@@" != "@$1@" ]; do
	case "$1" in
		-combine|-c)
			COMB=yes
			shift
		;;

		-h|-help)
		echo "Usage: sidplot [-c|-combine] files"
		echo "   filenames MUST be of the form filename.suffix"
		exit
		;;

		-?*)
			echo "Unknown option" $1
			exit
			;;

		-)
			;;

		*.*)
		files="$files $1"
		fcnt=`expr $fcnt + 1`
		shift
		;;

		*)
		echo "Invalid filename parameter: " $1
		exit
		;;
	esac
done

if [ $fcnt -lt 1 ]
then
	cat >tmp$$
	files=tmp$$
	base=tmp$$
fi

if [ $COMB = "NONE" ]
then
	for file in `echo $files`
	do
		if [ ! -e $file ]
		then
			echo File: $file does not exist
		else
			somefiles="yes"
			base=`echo $file|sed -e 's/\..*$//'`
			gnuplot >/dev/null 2>&1 <<!EOF!
			set terminal png size 1000,600
			set output '$base.png'
			set title 'VLF Received Signal Strength: $base'
			set xlabel 'Date/Time(UTC)'
			set ylabel 'Signal Level'
			set xdata time
			set timefmt "%s"
			set format x "%m/%d\\n%H:%M"
			set grid
			plot '$file' using 1:2 with lines
!EOF!
			if [ $base != tmp$$ ]
			then
				echo Plot for $file is available in $base.png
			else
				cat tmp$$.png
				rm -f tmp$$ tmp$$.png
			fi
		fi
	done
	if [ "@$somefiles@" = "@@" ]
	then
		echo None of the specified files exist--exiting
		exit
	fi

else

	for file in `echo $files`
	do
		if [ -e $file ]
		then
			base=`echo $file|sed -e 's/\..*$//'`
			bases="$bases $base"
			basefn="${basefn}_$base"
			plotcmd="$plotcmd, '$file' using 1:2 with lines"
		else
			echo File: $file does not exist
		fi
	done
	if [ "@$bases@" = "@@" ]
	then
		echo None of the specified files exist--exiting
		exit
	fi
	plotcmd="plot $plotcmd"
	plotcmd=`echo $plotcmd|sed -e 's/plot , /plot /'`
	basefn=`echo $basefn|sed -e 's/^_//'`
	bases=`echo $bases|tr '[a-z]' '[A-Z]'`
	gnuplot >/dev/null 2>&1 <<!EOF!
	set terminal png size 1000,600
	set output '$basefn.png'
	set title 'VLF Received Signal Strength: $bases'
	set xlabel 'Date/Time(UTC)'
	set ylabel 'Signal Level'
	set xdata time
	set timefmt "%s"
	set format x "%m/%d\\n%H:%M"
	set grid
	$plotcmd
!EOF!
	echo Plot for `echo $files` is available in $basefn.png
fi