--- ray/src/px/falsecolor.csh	1991/05/27 09:00:38	1.5
+++ ray/src/px/falsecolor.csh	2004/07/31 17:56:56	2.10
@@ -1,11 +1,13 @@
-#!/bin/csh -f
-# SCCSid "$SunId$ LBL"
+#!/bin/csh -fe
+# RCSid: $Id: falsecolor.csh,v 2.10 2004/07/31 17:56:56 greg Exp $
 #
 # Create false color image with legend
 #
+# Added user-definable legend 2004/01/20 Rob Guglielmetti
+
 set td=/usr/tmp/fc$$
 onintr quit
-set mult=470
+set mult=179
 set label=Nits
 set scale=1000
 set decades=0
@@ -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="$argv[1]"
@@ -63,10 +74,16 @@ while ($#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
+		set needfile
+		breaksw
 	case -n:
 		shift argv
 		set ndivs="$argv[1]"
@@ -79,6 +96,7 @@ while ($#argv > 0)
 end
 mkdir $td
 cat > $td/pc0.cal <<_EOF_
+PI : 3.14159265358979323846 ;
 scale : $scale ;
 mult : $mult ;
 ndivs : $ndivs ;
@@ -86,12 +104,12 @@ ndivs : $ndivs ;
 or(a,b) : if(a,a,b);
 EPS : 1e-7;
 neq(a,b) : if(a-b-EPS,1,b-a-EPS);
-btwn(a,b) : if(a-x,-1,b-x);
+btwn(a,x,b) : if(a-x,-1,b-x);
 clip(x) : if(x-1,1,if(x,x,0));
 frac(x) : x - floor(x);
-boundary(a,b) : neq(floor(ndivs*a),floor(ndivs*b));
+boundary(a,b) : neq(floor(ndivs*a+.5),floor(ndivs*b+.5));
 
-isconta = or(boundary(vleft,vright),boundary(vabove,vbelow));
+isconta = if(btwn(0,v,1),or(boundary(vleft,vright),boundary(vabove,vbelow)),-1);
 iscontb = if(btwn(0,v,1),btwn(.4,frac(ndivs*v),.6),-1); 
 
 ro = if(in,clip($redv),ra);
@@ -130,21 +148,45 @@ if ("$cpict" == "") then
 else if ("$cpict" == "$picture") then
 	set cpict=
 endif
-if ($decades > 0) then
+if ($?needfile && "$picture" == '-') then
+	cat > $td/picture
+	set picture=$td/picture
+endif
+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 "$imap" ) \
-	| psign -cf 1 1 1 -cb 0 0 0 -h `ev "floor(2*$legheight/$ndivs+.5)"` \
-	| pfilt -1 -x /2 -y /2 > $td/slab.pic
-pcomb $pc0args $pc1args $picture $cpict \
-	| pcompos $td/scol.pic 0 0 -t .2 $td/slab.pic 25 0 - $legwidth 0
+		-e "$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*.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*.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 $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 $loff - $legwidth 0
+endif
 quit:
 rm -rf $td