--- ray/src/px/falsecolor.csh	1992/04/06 17:54:11	2.2
+++ ray/src/px/falsecolor.csh	1996/09/05 13:02:58	2.7
@@ -15,6 +15,7 @@ set bluv='1-8/3*v'
 set ndivs=8
 set picture='-'
 set cpict=
+set loff=0
 set legwidth=100
 set legheight=200
 while ($#argv > 0)
@@ -63,10 +64,16 @@ while ($#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="$argv[1]"
@@ -131,7 +138,11 @@ if ("$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
@@ -142,10 +153,23 @@ pcomb $pc0args -e 'v=(y+.5)/yres;vleft=v;vright=v' \
 		-x $legwidth -y $legheight > $td/scol.pic
 ( 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
+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