--- loncom/interface/loncommon.pm	2003/10/27 21:21:08	1.136
+++ loncom/interface/loncommon.pm	2003/10/29 15:21:10	1.137
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # a pile of common routines
 #
-# $Id: loncommon.pm,v 1.136 2003/10/27 21:21:08 matthew Exp $
+# $Id: loncommon.pm,v 1.137 2003/10/29 15:21:10 matthew Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -2741,13 +2741,18 @@ sub DrawBarGraph {
         push (@Labels,$i+1);
     }
     #
+    $Max = 1 if ($Max < 1);
+    if ( int($Max) < $Max ) {
+        $Max++;
+        $Max = int($Max);
+    }
     $Title  = '' if (! defined($Title));
     $xlabel = '' if (! defined($xlabel));
     $ylabel = '' if (! defined($ylabel));
     $ValuesHash{$id.'.title'}    = &Apache::lonnet::escape($Title);
     $ValuesHash{$id.'.xlabel'}   = &Apache::lonnet::escape($xlabel);
     $ValuesHash{$id.'.ylabel'}   = &Apache::lonnet::escape($ylabel);
-    $ValuesHash{$id.'.Max'}      = $Max;
+    $ValuesHash{$id.'.y_max_value'} = $Max;
     $ValuesHash{$id.'.NumBars'}  = $NumBars;
     $ValuesHash{$id.'.NumSets'}  = $NumSets;
     $ValuesHash{$id.'.PlotType'} = 'bar';
@@ -2758,16 +2763,65 @@ sub DrawBarGraph {
     $ValuesHash{$id.'.bar_width'} = $bar_width;
     $ValuesHash{$id.'.labels'} = join(',',@Labels);
     #
-    $Max = 1 if ($Max < 1);
-    if ( int($Max) < $Max ) {
-        $Max++;
-        $Max = int($Max);
+    &Apache::lonnet::appenv(%ValuesHash);
+    return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
+}
+
+############################################################
+############################################################
+
+=pod
+
+=item DrawXYGraph
+
+=cut
+
+############################################################
+############################################################
+sub DrawXYGraph {
+    my ($Title,$xlabel,$ylabel,$Max,$colors,$Xlabels,$Ydata,%Values)=@_;
+    #
+    # Create the identifier for the graph
+    my $identifier = &get_cgi_id();
+    my $id = 'cgi.'.$identifier;
+    #
+    $Title  = '' if (! defined($Title));
+    $xlabel = '' if (! defined($xlabel));
+    $ylabel = '' if (! defined($ylabel));
+    my %ValuesHash = 
+        (
+         $id.'.title'  => &Apache::lonnet::escape($Title),
+         $id.'.xlabel' => &Apache::lonnet::escape($xlabel),
+         $id.'.ylabel' => &Apache::lonnet::escape($ylabel),
+         $id.'.y_max_value'=> $Max,
+         $id.'.labels'     => join(',',@$Xlabels),
+         $id.'.PlotType'   => 'XY',
+         $id.'.NumSets'    => 1,
+         );
+    #
+    if (defined($colors) && ref($colors) eq 'ARRAY') {
+        $ValuesHash{$id.'.Colors'}   = join(',',@{$colors});
+    }
+    #
+    if (! ref($Ydata) || ref($Ydata) ne 'ARRAY') {
+        return '';
+    }
+    my $NumSets=1;
+    foreach my $array ($Ydata){
+        next if (! ref($array));
+        $ValuesHash{$id.'.data.'.$NumSets++} = join(',',@$array);
+    }
+    #
+    # Deal with other parameters
+    while (my ($key,$value) = each(%Values)) {
+        $ValuesHash{$id.'.'.$key} = $value;
     }
     #
     &Apache::lonnet::appenv(%ValuesHash);
     return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
 }
 
+
 ############################################################
 ############################################################
 
@@ -2779,8 +2833,9 @@ sub DrawBarGraph {
 
 ############################################################
 ############################################################
-sub DrawXYGraph {
-    my ($Title,$xlabel,$ylabel,$Max,$Xlabels,$Ydata,%Values)=@_;
+sub DrawXYYGraph {
+    my ($Title,$xlabel,$ylabel,$colors,$Xlabels,$Ydata1,$Min1,$Max1,
+                                        $Ydata2,$Min2,$Max2,%Values)=@_;
     #
     # Create the identifier for the graph
     my $identifier = &get_cgi_id();
@@ -2794,21 +2849,35 @@ sub DrawXYGraph {
          $id.'.title'  => &Apache::lonnet::escape($Title),
          $id.'.xlabel' => &Apache::lonnet::escape($xlabel),
          $id.'.ylabel' => &Apache::lonnet::escape($ylabel),
-         $id.'.Max'    => $Max,
          $id.'.labels' => join(',',@$Xlabels),
          $id.'.PlotType' => 'XY',
          $id.'.NumSets' => 2,
+         $id.'.two_axes' => 1,
+         $id.'.y1_max_value' => $Max1,
+         $id.'.y1_min_value' => $Min1,
+         $id.'.y2_max_value' => $Max2,
+         $id.'.y2_min_value' => $Min2,
          );
     #
-    if (! ref($Ydata) || ref($Ydata) ne 'ARRAY') {
+    if (defined($colors) && ref($colors) eq 'ARRAY') {
+        $ValuesHash{$id.'.Colors'}   = join(',',@{$colors});
+    }
+    #
+    if (! ref($Ydata1) || ref($Ydata1) ne 'ARRAY' ||
+        ! ref($Ydata2) || ref($Ydata2) ne 'ARRAY'){
         return '';
     }
     my $NumSets=1;
-    foreach my $array ($Ydata){
+    foreach my $array ($Ydata1,$Ydata2){
         next if (! ref($array));
         $ValuesHash{$id.'.data.'.$NumSets++} = join(',',@$array);
     }
     #
+    # Deal with other parameters
+    while (my ($key,$value) = each(%Values)) {
+        $ValuesHash{$id.'.'.$key} = $value;
+    }
+    #
     &Apache::lonnet::appenv(%ValuesHash);
     return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
 }