--- ray/src/px/falsecolor.csh	1992/08/21 15:46:11	2.3
+++ ray/src/px/falsecolor.csh	2005/02/16 05:40:11	2.12
@@ -1,9 +1,11 @@
-#!/bin/csh -f
-# SCCSid "$SunId$ LBL"
+#!/bin/csh -fe
+# RCSid: $Id: falsecolor.csh,v 2.12 2005/02/16 05:40:11 greg Exp $
 #
 # Create false color image with legend
 #
-set td=/usr/tmp/fc$$
+# Added user-definable legend 2004/01/20 Rob Guglielmetti
+
+set td=/tmp/fc$$
 onintr quit
 set mult=179
 set label=Nits
@@ -15,10 +17,19 @@ set bluv='1-8/3*v'
 set ndivs=8
 set picture='-'
 set cpict=
+set loff=0
 set legwidth=100
 set legheight=200
 while ($#argv > 0)
 	switch ($argv[1])
+	case -lw:
+		shift argv
+		set legwidth="$argv[1]"
+		breaksw
+	case -lh:
+		shift argv
+		set legheight="$argv[1]"
+		breaksw
 	case -m:
 		shift argv
 		set mult="$argv[1]"
@@ -63,9 +74,11 @@ while ($#argv > 0)
 		breaksw
 	case -cl:
 		set docont=a
+		set loff=12
 		breaksw
 	case -cb:
 		set docont=b
+		set loff=13
 		breaksw
 	case -e:
 		set doextrem
@@ -76,7 +89,7 @@ while ($#argv > 0)
 		set ndivs="$argv[1]"
 		breaksw
 	default:
-		echo bad option "'$argv[1]'" >/dev/tty
+		echo bad option "'$argv[1]'"
 		exit 1
 	endsw
 	shift argv
@@ -139,34 +152,41 @@ if ($?needfile && "$picture" == '-') then
 	cat > $td/picture
 	set picture=$td/picture
 endif
-if ($decades > 0) then
+if ("$decades" != "0") then
 	set pc1args=($pc1args -e "map(x)=if(x-10^-$decades,log10(x)/$decades+1,0)")
 	set imap="imap(y)=10^((y-1)*$decades)"
 else
 	set imap="imap(y)=y"
 endif
+if ( $legwidth > 20 && $legheight > 40 ) then
 pcomb $pc0args -e 'v=(y+.5)/yres;vleft=v;vright=v' \
 		-e 'vbelow=(y-.5)/yres;vabove=(y+1.5)/yres' \
 		-x $legwidth -y $legheight > $td/scol.pic
-( echo $label; cnt $ndivs \
+( echo "$label"; cnt $ndivs \
 		| rcalc -e '$1='"($scale)*imap(($ndivs-.5-"'$1'")/$ndivs)" \
-		-e "$imap" ) \
+		-e "$imap" | sed -e 's/\(\.[0-9][0-9][0-9]\)[0-9]*/\1/' ) \
 	| psign -s -.15 -cf 1 1 1 -cb 0 0 0 \
 		-h `ev "floor($legheight/$ndivs+.5)"` > $td/slab.pic
+else
+	set legwidth=0
+	set legheight=0
+	(echo "" ; echo "-Y 1 +X 1" ; echo "aaa" ) > $td/scol.pic
+	cp $td/scol.pic $td/slab.pic
+endif
 if ( $?doextrem ) then
 	pextrem -o $picture > $td/extrema
 	set minpos=`sed 2d $td/extrema | rcalc -e '$2=$2;$1=$1+'"$legwidth"`
-	set minval=`rcalc -e '$1=($3*.3+$4*.59+$5*.11)*'"$mult" $td/extrema | sed -e 2d -e 's/\(.....\).*$/\1/'`
+	set minval=`rcalc -e '$1=($3*.27+$4*.67+$5*.06)*'"$mult" $td/extrema | sed -e 2d -e 's/\(\.[0-9][0-9][0-9]\)[0-9]*/\1/'`
 	set maxpos=`sed 1d $td/extrema | rcalc -e '$2=$2;$1=$1+'"$legwidth"`
-	set maxval=`rcalc -e '$1=($3*.3+$4*.59+$5*.11)*'"$mult" $td/extrema | sed -e 1d -e 's/\(.....\).*$/\1/'`
+	set maxval=`rcalc -e '$1=($3*.27+$4*.67+$5*.06)*'"$mult" $td/extrema | sed -e 1d -e 's/\(\.[0-9][0-9][0-9]\)[0-9]*/\1/'`
 	psign -s -.15 -a 2 -h 16 $minval > $td/minv.pic
 	psign -s -.15 -a 2 -h 16 $maxval > $td/maxv.pic
 	pcomb $pc0args $pc1args $picture $cpict \
-		| pcompos $td/scol.pic 0 0 -t .2 $td/slab.pic 0 20 \
+		| pcompos $td/scol.pic 0 0 -t .2 $td/slab.pic 0 $loff \
 		  - $legwidth 0 $td/minv.pic $minpos $td/maxv.pic $maxpos
 else
 	pcomb $pc0args $pc1args $picture $cpict \
-		| pcompos $td/scol.pic 0 0 -t .2 $td/slab.pic 0 20 - $legwidth 0
+		| pcompos $td/scol.pic 0 0 -t .2 $td/slab.pic 0 $loff - $legwidth 0
 endif
 quit:
 rm -rf $td