--- loncom/interface/loncommon.pm	2003/10/13 22:35:05	1.128
+++ loncom/interface/loncommon.pm	2003/10/15 21:12:24	1.129
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # a pile of common routines
 #
-# $Id: loncommon.pm,v 1.128 2003/10/13 22:35:05 albertel Exp $
+# $Id: loncommon.pm,v 1.129 2003/10/15 21:12:24 matthew Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -2686,12 +2686,19 @@ Returns a link to cgi-bin/graph
 ############################################################
 ############################################################
 sub DrawGraph {
-    my ($Title,$xlabel,$ylabel,$Max,$values1,$values2)=@_;
+    my ($Title,$xlabel,$ylabel,$Max,$colors,@Values)=@_;
     #
     my $identifier = time.'_'.int(rand(1000));
-    if (! defined($values1) || ref($values1) ne 'ARRAY') {
+    if (! @Values || ref($Values[0]) ne 'ARRAY') {
         return '';
     }
+    my $NumBars = scalar(@{$Values[0]});
+    my %ValuesHash;
+    my $NumSets=1;
+    foreach my $array (@Values) {
+        next if (! ref($array));
+        $ValuesHash{$identifier.'.data.'.$NumSets++} = join(',',@$array);
+    }
     #
     $Title  = '' if (! defined($Title));
     $xlabel = '' if (! defined($xlabel));
@@ -2700,13 +2707,6 @@ sub DrawGraph {
     $xlabel = &Apache::lonnet::escape($xlabel);
     $ylabel = &Apache::lonnet::escape($ylabel);
     #
-    my $data1 = join(',', @$values1);
-    my $data2;
-    if (defined($values2)) {
-        $data2 = join(',', @$values2);
-    }
-    #
-    my $NumBars = scalar(@$values1);
     $Max = 1 if ($Max < 1);
     if ( int($Max) < $Max ) {
         $Max++;
@@ -2718,8 +2718,9 @@ sub DrawGraph {
                             $identifier.'.ylabel'  => $ylabel,
                             $identifier.'.Max'     => $Max,
                             $identifier.'.NumBars' => $NumBars,
-                            $identifier.'.data1'   => $data1,
-                            $identifier.'.data2'   => $data2);
+                            $identifier.'.NumSets' => $NumSets,
+                            $identifier.'.Colors'  => join(',',@{$colors}),
+                            %ValuesHash);
     return '<IMG src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
 }