--- loncom/interface/lonstatistics.pm	2004/01/15 03:18:19	1.93
+++ loncom/interface/lonstatistics.pm	2004/02/02 21:45:12	1.94
@@ -1,6 +1,6 @@
 # The LearningOnline Network with CAPA
 #
-# $Id: lonstatistics.pm,v 1.93 2004/01/15 03:18:19 www Exp $
+# $Id: lonstatistics.pm,v 1.94 2004/02/02 21:45:12 matthew Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -38,21 +38,6 @@ lonstatistics
 
 Main handler for statistics and chart.
 
-=head1 PACKAGES USED
-
-    use strict;
-    use Apache::Constants qw(:common :http);
-    use Apache::lonnet();
-    use Apache::lonhomework;
-    use Apache::loncommon;
-    use Apache::loncoursedata;
-    use Apache::lonhtmlcommon;
-    use Apache::lonproblemanalysis;
-    use Apache::lonsubmissiontimeanalysis;
-    use Apache::lonproblemstatistics;
-    use Apache::lonstudentassessment;
-    use Apache::lonpercentage;
-    use Apache::lonmysql;
 =over 4
 
 =cut
@@ -72,7 +57,8 @@ use vars qw(
     $top_map 
     @Sequences 
     @SelectedMaps
-    @Assessments);
+    @Assessments
+    $enrollment_status);
 
 use Apache::lonnet();
 use Apache::lonhomework;
@@ -81,6 +67,7 @@ use Apache::loncoursedata;
 use Apache::lonhtmlcommon;
 use Apache::lonproblemanalysis();
 use Apache::lonsubmissiontimeanalysis();
+use Apache::loncorrectproblemplot();
 use Apache::lonproblemstatistics();
 use Apache::lonstudentassessment();
 use Apache::lonpercentage;
@@ -247,8 +234,8 @@ sub PrepareClasslist {
     }
     #
     # get the status requested
-    my $requested_status = 'Active';
-    $requested_status = $ENV{'form.Status'} if (exists($ENV{'form.Status'}));
+    $enrollment_status = 'Active';
+    $enrollment_status = $ENV{'form.Status'} if (exists($ENV{'form.Status'}));
     #
     # Process the classlist
     while (my ($student,$student_data) = each (%$classlist)) {
@@ -278,8 +265,8 @@ sub PrepareClasslist {
         foreach my $sect (@SelectedSections) {
             if ( (($sect eq 'all') || 
                   ($section eq $sect)) &&
-                 (($studenthash->{'status'} eq $requested_status) || 
-                  ($requested_status eq 'Any')) 
+                 (($studenthash->{'status'} eq $enrollment_status) || 
+                  ($enrollment_status eq 'Any')) 
                  ){
                 push (@Students,$studenthash);
                 last;
@@ -1051,10 +1038,15 @@ sub CreateMainMenu {
     &mt('Detailed statistics and graphs of student performance on problems.'),
                  },
                    { internal_name => 'submissiontime_analysis',
-                     name => &mt('Submission Time Analysis'),
+                     name => &mt('Submission Time Plots'),
                      short_description => 
     &mt('Display and analysis of submission times on assessments.'),
                  },
+                   { internal_name => 'correct_problems_plot',
+                     name => &mt('Correct Problems Plot'),
+                     short_description => 
+    &mt('Display a histogram of student performance in the course.'),
+                 },
 #                   { internal_name => 'student_assessment',
 #                     name => &mt('Problem Status Chart'),
 #                     short_description => 
@@ -1170,6 +1162,8 @@ sub handler {
             &Apache::lonproblemanalysis::BuildProblemAnalysisPage($r,$c);
         } elsif($GoToPage eq 'submissiontime_analysis') {
             &Apache::lonsubmissiontimeanalysis::BuildSubmissionTimePage($r,$c);
+        } elsif($GoToPage eq 'correct_problems_plot') {
+            &Apache::loncorrectproblemplot::BuildCorrectProblemsPage($r,$c);
         } elsif($GoToPage eq 'student_assessment') {
             &Apache::lonstudentassessment::BuildStudentAssessmentPage($r,$c);
         } elsif($GoToPage eq 'DoDiffGraph' || $GoToPage eq 'PercentWrongGraph') {