--- loncom/interface/statistics/lonstudentassessment.pm	2003/03/03 22:54:05	1.32
+++ loncom/interface/statistics/lonstudentassessment.pm	2003/06/05 19:21:22	1.52
@@ -1,6 +1,6 @@
 # The LearningOnline Network with CAPA
 #
-# $Id: lonstudentassessment.pm,v 1.32 2003/03/03 22:54:05 matthew Exp $
+# $Id: lonstudentassessment.pm,v 1.52 2003/06/05 19:21:22 matthew Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -85,6 +85,9 @@ my $Statistics;
 
 =item $show 'all', 'totals', or 'scores' determines how much data is output
 
+=item $single_student_mode evaluates to true if we are showing only one
+student.
+
 =cut
 
 #######################################################
@@ -92,6 +95,7 @@ my $Statistics;
 my $show_links;
 my $output_mode;
 my $show;
+my $single_student_mode;
 
 #######################################################
 #######################################################
@@ -127,22 +131,26 @@ Inputs:
 sub BuildStudentAssessmentPage {
     my ($r,$c)=@_;
     undef($Statistics);
+    $single_student_mode = 1 if ($ENV{'form.SelectedStudent'});
     #
     # Print out the HTML headers for the interface
     #    This also parses the output mode selector
     #    This step must always be done.
     $r->print(&CreateInterface());
     $r->print('<input type="hidden" name="notfirstrun" value="true" />');
+    $r->print('<input type="hidden" name="sort" value="'.
+              $ENV{'form.sort'}.'" />');
     $r->rflush();
-    if (! exists($ENV{'form.notfirstrun'})) {
+    if (! exists($ENV{'form.notfirstrun'}) && ! $single_student_mode) {
         $r->print(<<ENDMSG);
 <p>
-<font size="+1">
+<font size="+2">
 Please make your selections in the boxes above and hit 
 the button marked &quot;Update&nbsp;Display&quot;.
 </font>
 </p>
 ENDMSG
+#        $r->print(&OutputDescriptions());
         return;
     }
     #
@@ -155,6 +163,10 @@ ENDMSG
         $initialize     = \&excel_initialize;
         $output_student = \&excel_outputstudent;
         $finish         = \&excel_finish;
+#    } elsif ($output_mode eq 'multi-sheet excel') {
+#        $initialize     = \&multi_sheet_excel_initialize;
+#        $output_student = \&multi_sheet_excel_outputstudent;
+#        $finish         = \&multi_sheet_excel_finish;
     } elsif ($output_mode eq 'csv') {
         $initialize     = \&csv_initialize;
         $output_student = \&csv_outputstudent;
@@ -163,9 +175,19 @@ ENDMSG
     #
     if($c->aborted()) {  return ; }
     #
+    # Determine which students we want to look at
+    my @Students;
+    if ($single_student_mode) {
+        @Students = (&Apache::lonstatistics::current_student());
+        $r->print(&next_and_previous_buttons());
+        $r->rflush();
+    } else {
+        @Students = @Apache::lonstatistics::Students;
+    }
+    #
     # Call the initialize routine selected above
     $initialize->($r);
-    foreach my $student (@Apache::lonstatistics::Students) {
+    foreach my $student (@Students) {
         if($c->aborted()) { 
             $finish->($r);
             return ; 
@@ -181,6 +203,54 @@ ENDMSG
 
 #######################################################
 #######################################################
+sub next_and_previous_buttons {
+    my $Str = '';
+    $Str .= '<input type="hidden" name="SelectedStudent" value="'.
+        $ENV{'form.SelectedStudent'}.'" />';
+    #
+    # Build the previous student link
+    my $previous = &Apache::lonstatistics::previous_student();
+    my $previousbutton = '';
+    if (defined($previous)) {
+        my $sname = $previous->{'username'}.':'.$previous->{'domain'};
+        $previousbutton .= '<input type="button" value="'.
+            'Previous Student ('.
+            $previous->{'username'}.'@'.$previous->{'domain'}.')'.
+            '" onclick="document.Statistics.SelectedStudent.value='.
+            "'".$sname."'".';'.
+            'document.Statistics.submit();" />';
+    } else {
+        $previousbutton .= '<input type="button" value="'.
+            'Previous student (none)'.'" />';
+    }
+    #
+    # Build the next student link
+    my $next = &Apache::lonstatistics::next_student();
+    my $nextbutton = '';
+    if (defined($next)) {
+        my $sname = $next->{'username'}.':'.$next->{'domain'};
+        $nextbutton .= '<input type="button" value="'.
+            'Next Student ('.
+            $next->{'username'}.'@'.$next->{'domain'}.')'.
+            '" onclick="document.Statistics.SelectedStudent.value='.
+            "'".$sname."'".';'.
+            'document.Statistics.submit();" />';
+    } else {
+        $nextbutton .= '<input type="button" value="'.
+            'Next student (none)'.'" />';
+    }
+    #
+    # Build the 'all students' button
+    my $all = '';
+    $all .= '<input type="button" value="All Students" '.
+            '" onclick="document.Statistics.SelectedStudent.value='.
+            "''".';'.'document.Statistics.submit();" />';
+    $Str .= $previousbutton.('&nbsp;'x5).$all.('&nbsp;'x5).$nextbutton;
+    return $Str;
+}
+
+#######################################################
+#######################################################
 
 sub get_student_fields_to_show {
     my @to_show = @Apache::lonstatistics::SelectedStudentData;
@@ -193,19 +263,6 @@ sub get_student_fields_to_show {
     return @to_show;
 }
 
-sub get_sequences_to_show {
-    my @Sequences;
-    foreach my $map_symb (@Apache::lonstatistics::SelectedMaps) {
-        foreach my $sequence (@Apache::lonstatistics::Sequences) {
-            next if ($sequence->{'symb'} ne $map_symb && $map_symb ne 'all');
-            next if ($sequence->{'num_assess'} < 1);
-            push (@Sequences,$sequence);
-        }
-    }
-    return @Sequences;
-}
-
-
 #######################################################
 #######################################################
 
@@ -232,6 +289,7 @@ sub CreateInterface {
     $Str .= '<tr>';
     $Str .= '<td align="center"><b>Sections</b></td>';
     $Str .= '<td align="center"><b>Student Data</b></td>';
+    $Str .= '<td align="center"><b>Enrollment Status</b></td>';
     $Str .= '<td align="center"><b>Sequences and Folders</b></td>';
     $Str .= '<td align="center"><b>Output Format</b></td>';
     $Str .= '</tr>'."\n";
@@ -250,6 +308,8 @@ sub CreateInterface {
     $Str .= &Apache::lonstatistics::StudentDataSelect('StudentData','multiple',
                                                       5,undef);
     $Str .= '</td><td>'."\n";
+    $Str .= &Apache::lonhtmlcommon::StatusOptions(undef,undef,5);
+    $Str .= '</td><td>'."\n";
     $Str .= &Apache::lonstatistics::MapSelect('Maps','multiple,all',5,
                                               $only_seq_with_assessments);
     $Str .= '</td><td>'."\n";
@@ -273,39 +333,135 @@ sub CreateInterface {
 my @OutputOptions = 
     ({ name  => 'HTML, with links',
        value => 'html, with links',
-       description => ''},
+       description => 'Output HTML with each symbol linked to the problem '.
+	   'which generated it.',
+       mode => 'html',
+       show => 'all',
+       show_links => 'yes',
+       },
+     { name  => 'HTML, with all links',
+       value => 'html, with all links',
+       description => 'Output HTML with each symbol linked to the problem '.
+	   'which generated it.  '.
+           'This includes links for unattempted problems.',
+       mode => 'html',
+       show => 'all',
+       show_links => 'all',
+       },
      { name  => 'HTML, without links',
        value => 'html, without links',
-       description => ''},
-     { name  => 'HTML, totals',
-       value => 'html, totals',
-       description => ''},
+       description => 'Output HTML.  By not including links, the size of the'.
+	   ' web page is greatly reduced.  If your browser crashes on the '.
+	   'full display, try this.',
+       mode => 'html',
+       show => 'all',
+       show_links => 'no',
+           },
      { name  => 'HTML, scores only',
        value => 'html, scores only',
-       description => ''},
-     { name  => 'Excel, totals',
-       value => 'excel, totals',
-       description => ''},
+       description => 'Output HTML, only showing the total number of correct'.
+	   ' problems (or problem parts) and not the maximum possible for '.
+	   'each student',
+       mode => 'html',
+       show => 'scores',
+       show_links => 'no',
+           },
+     { name  => 'HTML, totals',
+       value => 'html, totals',
+       description => 'Output HTML, but only the summary statistics for each'.
+	   ' sequence selected for each student.',
+       mode => 'html',
+       show => 'totals',
+       show_links => 'no',
+       },
+     { name  => 'HTML, summary table only',
+       value => 'html summary table only',
+       description => 'Output HTML, but only the final summary table for '.
+           'all students across all sequences.',
+       mode => 'html',
+       show => 'final table',
+       show_links => 'no',
+       },
      { name  => 'Excel, scores only',
        value => 'excel, scores only',
-       description => ''},
-     { name  => 'CSV, totals',
-       value => 'csv, totals',
-       description => ''},
-     { name  => 'CSV, scores only',
-       value => 'csv, scores only',
-       description => ''},
+       description => 'Output an Excel file (compatable with Excel 95), '.
+	   'with a single column for each sequence showing the students '.
+	   'score.',
+       mode => 'excel',
+       show => 'scores',
+       show_links => 'no',
+           },
+     { name  => 'Excel, totals',
+       value => 'excel, totals',
+       description => 'Output an Excel file (compatable with Excel 95), '.
+	   'with two columns for each sequence, the students score on the '.
+	   'sequence and the students maximum possible on the sequence',
+       mode => 'excel',
+       show => 'totals',
+       show_links => 'no',
+           },
+#     { name  => 'multi-sheet Excel',
+#       value => 'multi-sheet excel',
+#       description => 'Output an Excel file (compatable with Excel 95), '.
+#	   'with a seperate worksheet for each sequence you have selected '.
+#           'the data for each problem part '.
+#           '(number of tries, status, points awarded) will be listed.',
+#       mode => 'multi-sheet excel',
+#       show => 'totals',
+#       show_links => 'no',
+#           },
+#     { name  => 'multi-sheet Excel, by section',
+#       value => 'multi-sheet excel, by section',
+#       description => 'Output an Excel file (compatable with Excel 95), '.
+#	   'with a seperate worksheet for each sequence you have selected '.
+#           'the data for each problem part '.
+#           '(number of tries, status, points awarded) will be listed.  '.
+#           'There will be one Excel workbook for each section selected.',
+#       mode => 'multi-sheet excel',
+#       show => 'by section',
+#       show_links => 'no',
+#           },
      { name  => 'CSV, everything',
        value => 'csv, everything',
-       description => ''}
+       description => '',
+       mode => 'csv',
+       show => 'all',
+       show_links => 'no',
+           },
+     { name  => 'CSV, scores only',
+       value => 'csv, scores only',
+       description => '',
+       mode => 'csv',
+       show => 'scores',
+       show_links => 'no',
+           },
+     { name  => 'CSV, totals',
+       value => 'csv, totals',
+       description => '',
+       mode => 'csv',
+       show => 'totals',
+       show_links => 'no',
+           },
      );
 
+sub OutputDescriptions {
+    my $Str = '';
+    $Str .= "<h2>Output Modes</h2>\n";
+    $Str .= "<dl>\n";
+    foreach my $outputmode (@OutputOptions) {
+	$Str .="    <dt>".$outputmode->{'name'}."</dt>\n";
+	$Str .="        <dd>".$outputmode->{'description'}."</dd>\n";
+    }
+    $Str .= "</dl>\n";
+    return $Str;
+}
+
 sub CreateAndParseOutputSelector {
     my $Str = '';
-    my $elementname = 'outputmode';
+    my $elementname = 'chartoutputmode';
     #
     # Format for output options is 'mode, restrictions';
-    my $selected = 'html, with links';
+    my $selected = 'html, without links';
     if (exists($ENV{'form.'.$elementname})) {
         if (ref($ENV{'form.'.$elementname} eq 'ARRAY')) {
             $selected = $ENV{'form.'.$elementname}->[0];
@@ -318,25 +474,13 @@ sub CreateAndParseOutputSelector {
     $show_links  = 'no';
     $output_mode = 'html';
     $show        = 'all';
-    my ($mode,$restriction) = split(',',$selected);
-    $restriction =~ s/^\s*//;
-    if ($mode =~ /^(html|excel|csv)$/) {
-        $output_mode = $mode;
-    } else {
-        $output_mode = 'html';
-    }
-    if ($restriction eq 'with links') {
-        $show_links = 'yes';
-    } else {
-        $show_links = 'no';
-    }
-    if ($restriction eq 'totals') {
-        $show = 'totals';
-    } elsif ($restriction eq 'scores only') {
-        $show = 'scores';
-    } else {
-        $show = 'everything';
+    foreach my $option (@OutputOptions) {
+        next if ($option->{'value'} ne $selected);
+        $output_mode = $option->{'mode'};
+        $show        = $option->{'show'};
+        $show_links  = $option->{'show_links'};
     }
+
     #
     # Build the form element
     $Str = qq/<select size="5" name="$elementname">/;
@@ -374,12 +518,27 @@ Return a line of the chart for a student
     my $padding;
     my $count;
 
+    my $nodata_count; # The number of students for which there is no data
+    my %prog_state;   # progress state used by loncommon PrgWin routines
+
 sub html_initialize {
     my ($r) = @_;
     #
     $padding = ' 'x3;
-    $count = 1;
+    $count = 0;
+    $nodata_count = 0;
+    #
+    $r->print("<h3>".$ENV{'course.'.$ENV{'request.course.id'}.'.description'}.
+              "&nbsp;&nbsp;".localtime(time)."</h3>");
+
     #
+    # Set up progress window for 'final table' display only
+    if ($show eq 'final table') {
+        my $studentcount = scalar(@Apache::lonstatistics::Students); 
+        %prog_state=&Apache::lonhtmlcommon::Create_PrgWin
+            ($r,'Summary Table Status',
+             'Summary Table Compilation Progress', $studentcount);
+    }
     my $Str = "<pre>\n";
     # First, the @StudentData fields need to be listed
     my @to_show = &get_student_fields_to_show();
@@ -390,7 +549,7 @@ sub html_initialize {
         $Str .= $title.' 'x($width-$base).$padding;
     }
     # Now the selected sequences need to be listed
-    foreach my $sequence (&get_sequences_to_show) {
+    foreach my $sequence (&Apache::lonstatistics::Sequences_with_Assess()){
         my $title = $sequence->{'title'};
         my $base  = $sequence->{'base_width'};
         my $width = $sequence->{'width'};
@@ -398,6 +557,11 @@ sub html_initialize {
     }
     $Str .= "total (of shown problems)</pre>\n";
     $Str .= "<pre>";
+    #
+    # Check for suppression of output
+    if ($show eq 'final table') {
+        $Str = '';
+    }
     $r->print($Str);
     $r->rflush();
     return;
@@ -406,6 +570,10 @@ sub html_initialize {
 sub html_outputstudent {
     my ($r,$student) = @_;
     my $Str = '';
+    #
+    if($count++ % 5 == 0 && $count > 0) {
+        $r->print("</pre><pre>");
+    }
     # First, the @StudentData fields need to be listed
     my @to_show = &get_student_fields_to_show();
     foreach my $field (@to_show) {
@@ -423,6 +591,8 @@ sub html_outputstudent {
         %StudentsData = @tmp;
     }
     if (scalar(@tmp) < 1) {
+        $nodata_count++;
+        return if ($show eq 'final table');
         $Str .= '<font color="blue">No Course Data</font>'."\n";
         $r->print($Str);
         $r->rflush();
@@ -432,8 +602,8 @@ sub html_outputstudent {
     # By sequence build up the data
     my $studentstats;
     my $PerformanceStr = '';
-    foreach my $seq (&get_sequences_to_show) {
-        my ($performance,$score,$seq_max) =
+    foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
+        my ($performance,$performance_length,$score,$seq_max) =
             &StudentPerformanceOnSequence($student,\%StudentsData,
                                           $seq,$show_links);
         my $ratio = $score.'/'.$seq_max;
@@ -446,7 +616,7 @@ sub html_outputstudent {
             $performance .= ' 'x($seq->{'width'}-length($performance));
         } else {
             # Pad with extra spaces
-            $performance .= ' 'x($seq->{'width'}-$seq_max-
+            $performance .= ' 'x($seq->{'width'}-$performance_length-
                                  length($ratio)
                                  ).$ratio;
         }
@@ -467,24 +637,101 @@ sub html_outputstudent {
     }
     $Str .= ' '.' 'x(length($max)-length($score)).$score.'/'.$max;
     $Str .= " \n";
-    $r->print($Str);
     #
-    $count++;
-    if($count % 5 == 0) {
-        $r->print("</pre><pre>");
+    # Check for suppressed output and update the progress window if so...
+    if ($show eq 'final table') {
+        $Str = '';
+        &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
+                                                 'last student');
     }
     #
+    $r->print($Str);
+    #
     $r->rflush();
     return;
 }    
 
 sub html_finish {
     my ($r) = @_;
-    $r->print("</pre>\n"); 
+    #
+    # Check for suppressed output and close the progress window if so
+    if ($show eq 'final table') {
+        &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
+    } else {
+        $r->print("</pre>\n"); 
+    }
+    if ($single_student_mode) {
+        $r->print(&SingleStudentTotal());
+    } else {
+        $r->print(&StudentAverageTotal());
+    }
     $r->rflush();
     return;
 }
 
+sub StudentAverageTotal {
+    my $Str = "<h3>Summary Tables</h3>\n";
+    my $num_students = scalar(@Apache::lonstatistics::Students);
+    my $total_ave = 0;
+    my $total_max = 0;
+    $Str .= '<table border=2 cellspacing="1">'."\n";
+    $Str .= "<tr><th>Title</th><th>Average</th><th>Maximum</th></tr>\n";
+    foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
+        my $ave;
+        if ($num_students > $nodata_count) {
+            $ave = int(100*($Statistics->{$seq->{'symb'}}->{'score'}/
+                            ($num_students-$nodata_count)))/100;
+        } else {
+            $ave = 0;
+        }
+        $total_ave += $ave;
+        my $max = $seq->{'num_assess_parts'};
+        $total_max += $max;
+        if ($ave == 0) {
+            $ave = "0.00";
+        }
+        $ave .= '&nbsp;';
+        $max .= '&nbsp;&nbsp;&nbsp;';
+        $Str .= '<tr><td>'.$seq->{'title'}.'</td>'.
+            '<td align="right">'.$ave.'</td>'.
+                '<td align="right">'.$max.'</td></tr>'."\n";
+    }
+    $total_ave = int(100*$total_ave)/100; # only two digit
+    $Str .= "</table>\n";
+    $Str .= '<table border=2 cellspacing="1">'."\n";
+    $Str .= '<tr><th>Number of Students</th><th>Average</th>'.
+        "<th>Maximum</th></tr>\n";
+    $Str .= '<tr><td>'.($num_students-$nodata_count).'</td>'.
+        '<td>'.$total_ave.'</td><td>'.$total_max.'</td>';
+    $Str .= "</table>\n";
+    return $Str;
+}
+
+sub SingleStudentTotal {
+    my $student = &Apache::lonstatistics::current_student();
+    my $Str = "<h3>Summary table for ".$student->{'fullname'}." ".
+        $student->{'username'}.'@'.$student->{'domain'}."</h3>\n";
+    $Str .= '<table border=2 cellspacing="1">'."\n";
+    $Str .= 
+        "<tr><th>Sequence or Folder</th><th>Score</th><th>Maximum</th></tr>\n";
+    my $total = 0;
+    my $total_max = 0;
+    foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
+        my $value = $Statistics->{$seq->{'symb'}}->{'score'};
+        my $max = $Statistics->{$seq->{'symb'}}->{'max'};
+        $Str .= '<tr><td>'.$seq->{'title'}.'</td>'.
+            '<td align="right">'.$value.'</td>'.
+                '<td align="right">'.$max.'</td></tr>'."\n";
+        $total += $value;
+        $total_max +=$max;
+    }
+    $Str .= '<tr><td><b>Total</b></td>'.
+        '<td align="right">'.$total.'</td>'.
+        '<td align="right">'.$total_max."</td></tr>\n";
+    $Str .= "</table>\n";
+    return $Str;
+}
+
 }
 
 #######################################################
@@ -492,6 +739,78 @@ sub html_finish {
 
 =pod
 
+=head2 Multi-Sheet EXCEL subroutines
+
+=item &multi_sheet_excel_initialize($r)
+
+=item &multi_sheet_excel_outputstudent($r,$student)
+
+=item &multi_sheet_excel_finish($r)
+
+=cut
+
+#######################################################
+#######################################################
+{
+
+sub multi_sheet_excel_initialize {
+    my ($r)=@_;
+    $r->print("<h1>Not yet implemented</h1>");
+    # 
+    # Estimate the size of the file.  We would like to have < 5 megs of data.
+    my $max_size = 5000000;
+    my $num_students  = scalar(@Apache::lonstatistics::Students);
+    my $num_sequences = 0;
+    my $num_data_per_part  = 2; # 'status' and 'numtries'
+    my $fields_per_student = scalar(&get_student_fields_to_show());
+    my $bytes_per_field    = 20; # Back of the envelope calculation
+    foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
+        $num_sequences++ if ($seq->{'num_assess'} > 0);
+        $fields_per_student += $num_data_per_part * $seq->{'num_assess_parts'};
+    }
+    my $size_estimate = $fields_per_student*$num_students*$bytes_per_field;
+    #
+    # Compute number of workbooks
+    my $num_workbooks = 1;
+    if ($size_estimate > $max_size) { # try to stay under 5 megs
+        $num_workbooks += int($size_estimate / $max_size);
+    }
+    if ($show eq 'by section') {
+        if (@Apache::lonstatistics::SelectedSections > 1 && 
+            $Apache::lonstatistics::SelectedSections[0] ne 'all') {
+            $num_workbooks = scalar(@Apache::lonstatistics::SelectedSections);
+        } else {
+            # @Apache::lonstatistics::Sections contains 'all' as well.
+            $num_workbooks = scalar(@Apache::lonstatistics::Sections) - 1;
+        }
+    }
+    
+    $r->print("Maximum allowed size: ".$max_size." bytes<br />");
+    $r->print("Number of students: ".$num_students."<br />");
+    $r->print("Number of fields per student: ".$fields_per_student."<br />");
+    $r->print("Total number of fields: ".($fields_per_student*$num_students).
+              "<br />");
+    $r->print("Bytes per field: ".$bytes_per_field." (estimated)"."<br />");
+    $r->print("Estimated size: ".$size_estimate." bytes<br />");
+    $r->print("Number of workbooks: ".$num_workbooks."<br />");
+    $r->rflush();
+    return;
+}
+
+sub multi_sheet_excel_outputstudent {
+    my ($r,$student) = @_;
+}
+
+sub multi_sheet_excel_finish {
+    my ($r) = @_;
+}
+
+}
+#######################################################
+#######################################################
+
+=pod
+
 =head2 EXCEL subroutines
 
 =item &excel_initialize($r)
@@ -513,8 +832,7 @@ my $filename;
 my $rows_output;
 my $cols_output;
 
-my $num_students;
-my $start_time;
+my %prog_state; # progress window state
 
 sub excel_initialize {
     my ($r) = @_;
@@ -529,9 +847,6 @@ sub excel_initialize {
     $rows_output = 0;
     $cols_output = 0;
     #
-    $num_students = 0;
-    $start_time   = time;
-    #
     # Create sheet
     $excel_workbook = Spreadsheet::WriteExcel->new('/home/httpd'.$filename);
     #
@@ -551,20 +866,55 @@ sub excel_initialize {
     $excel_workbook->set_tempdir($Apache::lonnet::tmpdir);
     #
     # Add a worksheet
-    $excel_sheet = $excel_workbook->addworksheet
-        ($ENV{'course.'.$ENV{'request.course.id'}.'.description'});
+    my $sheetname = $ENV{'course.'.$ENV{'request.course.id'}.'.description'};
+    if (length($sheetname) > 31) {
+        $sheetname = substr($sheetname,0,31);
+    }
+    $excel_sheet = $excel_workbook->addworksheet($sheetname);
+    #
+    # Put the course description in the header
+    $excel_sheet->write($rows_output,$cols_output++,
+                   $ENV{'course.'.$ENV{'request.course.id'}.'.description'});
+    $cols_output += 3;
+    #
+    # Put a description of the sections listed
+    my $sectionstring = '';
+    my @Sections = @Apache::lonstatistics::SelectedSections;
+    if (scalar(@Sections) > 1) {
+        if (scalar(@Sections) > 2) {
+            my $last = pop(@Sections);
+            $sectionstring = "Sections ".join(', ',@Sections).', and '.$last;
+        } else {
+            $sectionstring = "Sections ".join(' and ',@Sections);
+        }
+    } else {
+        if ($Sections[0] eq 'all') {
+            $sectionstring = "All sections";
+        } else {
+            $sectionstring = "Section ".$Sections[0];
+        }
+    }
+    $excel_sheet->write($rows_output,$cols_output++,$sectionstring);
+    $cols_output += scalar(@Sections);
+    #
+    # Put the date in there too
+    $excel_sheet->write($rows_output,$cols_output++,
+                        'Compiled on '.localtime(time));
+    #
+    $rows_output++;
     #
     # Add the student headers
+    $cols_output = 0;
     foreach my $field (&get_student_fields_to_show()) {
-        $excel_sheet->write(1,$cols_output++,$field);
+        $excel_sheet->write($rows_output,$cols_output++,$field);
     }
     #
     # Add the Sequence Headers
-    foreach my $seq (&get_sequences_to_show) {
-        $excel_sheet->write(0,$cols_output,$seq->{'title'});
+    foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
+        $excel_sheet->write($rows_output,$cols_output,$seq->{'title'});
         if ($show eq 'totals') {
-            $excel_sheet->write(1,$cols_output,'score');
-            $excel_sheet->write(1,$cols_output+1,'maximum');
+            $excel_sheet->write($rows_output+1,$cols_output,'score');
+            $excel_sheet->write($rows_output+1,$cols_output+1,'maximum');
             $cols_output += 2;
         } else {
             $cols_output++;
@@ -573,9 +923,29 @@ sub excel_initialize {
     #
     # Bookkeeping
     if ($show eq 'totals') {
-        $rows_output = 2;
+        $rows_output += 2;
     } else {
-        $rows_output = 1;
+        $rows_output += 1;
+    }
+    #
+    # Output a row for MAX
+    if ($show ne 'totals') {
+        $cols_output = 0;
+        foreach my $field (&get_student_fields_to_show()) {
+            if ($field eq 'username' || $field eq 'fullname' || 
+                $field eq 'id') {
+                $excel_sheet->write($rows_output,$cols_output++,'Maximum');
+            } else {
+                $excel_sheet->write($rows_output,$cols_output++,'');
+            }
+        }
+        #
+        # Add the Sequence Headers
+        foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
+            $excel_sheet->write($rows_output,$cols_output++,
+                                $seq->{'num_assess_parts'});
+        }
+        $rows_output++;
     }
     #
     # Let the user know what we are doing
@@ -586,6 +956,11 @@ sub excel_initialize {
     $r->print("</h1>\n");
     $r->rflush();
     #
+    # Initialize progress window
+    %prog_state=&Apache::lonhtmlcommon::Create_PrgWin
+        ($r,'Excel File Compilation Status',
+         'Excel File Compilation Progress', $studentcount);
+    #
     return;
 }
 
@@ -611,8 +986,8 @@ sub excel_outputstudent {
     }
     #
     # Write out sequence scores and totals data
-    foreach my $seq (&get_sequences_to_show) {
-        my ($performance,$score,$seq_max) =
+    foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
+        my ($performance,$performance_length,$score,$seq_max) =
             &StudentPerformanceOnSequence($student,\%StudentsData,
                                           $seq,'no');
         if ($show eq 'totals' || $show eq 'scores') {
@@ -627,30 +1002,8 @@ sub excel_outputstudent {
     $rows_output++; 
     $cols_output=0;
     #
-    # Time estimate
-    $num_students++;
-    if ($num_students % 10 == 0) {
-        my $time_est = (time - $start_time)/$num_students * 
-            (scalar(@Apache::lonstatistics::Students)-$num_students);
-        $time_est = int($time_est);
-        if (int ($time_est/60) > 0) {
-            my $min = int($time_est/60);
-            my $sec = $time_est % 60;
-            $time_est = $min.' minutes';
-            if ($sec > 1) {
-                $time_est.= ', '.$sec.' seconds';
-            } elsif ($sec > 0) {
-                $time_est.= ', '.$sec.' second';
-            }
-        } else {
-            $time_est .= ' seconds';
-        }
-        $r->print($num_students.' out of '.
-                  (scalar(@Apache::lonstatistics::Students)).
-                  " students processed.  ".
-                  $time_est." remain.  <br />\n");
-        $r->rflush();
-    }
+    # Update the progress window
+    &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,'last student');
     return;
 }
 
@@ -664,14 +1017,12 @@ sub excel_finish {
     #
     return if($c->aborted());
     #
+    # Close the progress window
+    &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
+    #
     # Tell the user where to get their excel file
-    $r->print('<br /><br />'.
+    $r->print('<br />'.
               '<a href="'.$filename.'">Your Excel spreadsheet.</a>'."\n");
-    my $total_time = time - $start_time;
-    if (int ($total_time / 60) > 0) {
-        $total_time = int($total_time/60).' minutes, '.($total_time % 60);
-    }
-    $r->print('<br />'.$total_time.' seconds total');
     $r->rflush();
     return;
 }
@@ -696,18 +1047,144 @@ sub excel_finish {
 #######################################################
 {
 
+my $outputfile;
+my $filename;
+
+my %prog_state; # progress window state
+
 sub csv_initialize{
     my ($r) = @_;
-    $r->print("<h1>Not implemented yet</h1>");
+    # 
+    # Clean up
+    $filename = undef;
+    $outputfile = undef;
+    undef(%prog_state);
+    #
+    # Open a file
+    $filename = '/prtspool/'.
+        $ENV{'user.name'}.'_'.$ENV{'user.domain'}.'_'.
+            time.'_'.rand(1000000000).'.csv';
+    unless ($outputfile = Apache::File->new('>/home/httpd'.$filename)) {
+        $r->log_error("Couldn't open $filename for output $!");
+        $r->print("Problems occured in writing the csv file.  ".
+                  "This error has been logged.  ".
+                  "Please alert your LON-CAPA administrator.");
+        $outputfile = undef;
+    }
+    #
+    # Datestamp
+    my $description = $ENV{'course.'.$ENV{'request.course.id'}.'.description'};
+    print $outputfile '"'.&Apache::loncommon::csv_translate($description).'",'.
+        '"'.&Apache::loncommon::csv_translate(scalar(localtime(time))).'"'.
+            "\n";
+
+    #
+    # Print out the headings
+    my $Str = '';
+    my $Str2 = undef;
+    foreach my $field (&get_student_fields_to_show()) {
+        if ($show eq 'scores') {
+            $Str .= '"'.&Apache::loncommon::csv_translate($field).'",';
+        } elsif ($show eq 'totals') {
+            $Str .= '"",'; # first row empty on the student fields
+            $Str2 .= '"'.&Apache::loncommon::csv_translate($field).'",';
+        } elsif ($show eq 'all') {
+            $Str .= '"'.&Apache::loncommon::csv_translate($field).'",';
+        }
+    }
+    foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
+        if ($show eq 'scores') {
+            $Str .= '"'.&Apache::loncommon::csv_translate($seq->{'title'}).
+                '",';
+        } elsif ($show eq 'totals') {
+            $Str  .= '"'.&Apache::loncommon::csv_translate($seq->{'title'}).
+                '","",';
+            $Str2 .= '"score","total possible",';
+        } elsif ($show eq 'all') {
+            $Str  .= '"'.&Apache::loncommon::csv_translate($seq->{'title'}).
+                '",';
+            $Str .= '"",'x($seq->{'num_assess_parts'}-1);
+            $Str .= '"score","total possible",';
+        }
+    }
+    chop($Str);
+    $Str .= "\n";
+    print $outputfile $Str;
+    if (defined($Str2)) {
+        chop($Str2);
+        $Str2 .= "\n";
+        print $outputfile $Str2;
+    }
+    #
+    # Initialize progress window
+    my $studentcount = scalar(@Apache::lonstatistics::Students);
+    %prog_state=&Apache::lonhtmlcommon::Create_PrgWin
+        ($r,'CSV File Compilation Status',
+         'CSV File Compilation Progress', $studentcount);
     return;
 }
 
 sub csv_outputstudent {
     my ($r,$student) = @_;
+    return if (! defined($outputfile));
+    my $Str = '';
+    #
+    # Output student fields
+    my @to_show = &get_student_fields_to_show();
+    foreach my $field (@to_show) {
+        $Str .= '"'.&Apache::loncommon::csv_translate($student->{$field}).'",';
+    }
+    #
+    # Get student assessment data
+    my %StudentsData;
+    my @tmp = &Apache::loncoursedata::get_current_state($student->{'username'},
+                                                        $student->{'domain'},
+                                                        undef,
+                                                   $ENV{'request.course.id'});
+    if ((scalar @tmp > 0) && ($tmp[0] !~ /^error:/)) {
+        %StudentsData = @tmp;
+    }
+    #
+    # Output performance data
+    foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
+        my ($performance,$performance_length,$score,$seq_max) =
+            &StudentPerformanceOnSequence($student,\%StudentsData,
+                                          $seq,'no');
+        if ($show eq 'scores') {
+            $Str .= '"'.$score.'",';
+        } elsif ($show eq 'totals') {
+            $Str  .= '"'.$score.'","'.$seq_max.'",';
+        } elsif ($show eq 'all') {
+            $Str .= '"'.join('","',(split(//,$performance),$score,$seq_max)).
+                '",';
+        }
+    }
+    chop($Str);
+    $Str .= "\n";
+    print $outputfile $Str;
+    #
+    # Update the progress window
+    &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,'last student');
+    return;
 }
 
 sub csv_finish {
     my ($r) = @_;
+    return if (! defined($outputfile));
+    close($outputfile);
+    #
+    my $c = $r->connection();
+    return if ($c->aborted());
+    #
+    # Close the progress window
+    &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
+    #
+    # Tell the user where to get their csv file
+    $r->print('<br />'.
+              '<a href="'.$filename.'">Your csv file.</a>'."\n");
+    $r->rflush();
+    return;
+    
 }
 
 }
@@ -742,12 +1219,14 @@ sub StudentPerformanceOnSequence {
     $links = 'no' if (! defined($links));
     my $Str = '';
     my ($sum,$max) = (0,0);
+    my $performance_length = 0;
     foreach my $resource (@{$seq->{'contents'}}) {
         next if ($resource->{'type'} ne 'assessment');
         my $resource_data = $studentdata->{$resource->{'symb'}};
         my $value = '';
         foreach my $partnum (@{$resource->{'parts'}}) {
             $max++;
+            $performance_length++;
             my $symbol = ' '; # default to space
             #
             if (exists($resource_data->{'resource.'.$partnum.'.solved'})) {
@@ -775,6 +1254,9 @@ sub StudentPerformanceOnSequence {
                         $symbol = ' ';
                     }
                     $sum++;
+                } elsif (exists($resource_data->{'resource.'.
+                                                     $partnum.'.tries'})){
+                    $symbol = '.';
                 } else {
                     $symbol = ' ';
                 }
@@ -786,8 +1268,15 @@ sub StudentPerformanceOnSequence {
                     $symbol = ' ';
                 }
             }
+#            if ($symbol ne ' ') {
+#                $attempted_sum++;
+#            }
             #
-            if ($links eq 'yes' && $symbol ne ' ') {
+            if ( ($links eq 'yes' && $symbol ne ' ') ||
+                 ($links eq 'all')) {
+                if (length($symbol) > 1) {
+                    &Apache::lonnet::logthis('length of symbol "'.$symbol.'" > 1');
+                }
                 $symbol = '<a href="/adm/grades'.
                     '?symb='.&Apache::lonnet::escape($resource->{'symb'}).
                         '&student='.$student->{'username'}.
@@ -798,70 +1287,10 @@ sub StudentPerformanceOnSequence {
         }
         $Str .= $value;
     }
-    return ($Str,$sum,$max);
-}
-
-#######################################################
-#######################################################
-sub StudentAverageTotal {
-    my ($cache, $students, $sequenceKeys)=@_;
-    my $Str = "\n<b>Summary Tables:</b>\n";
-    my %Correct = ();
-    my $ProblemsSolved = 0;
-    my $TotalProblems = 0;
-    my $StudentCount = 0;
-
-    foreach my $name (@$students) {
-        $StudentCount++;
-        foreach my $sequence (@$sequenceKeys) {
-            $Correct{$sequence} +=
-	       $cache->{$name.':'.$sequence.':problemsCorrect'};
-        }
-	$ProblemsSolved += $cache->{$name.':problemsSolved'};
-        $TotalProblems += $cache->{$name.':totalProblems'};
-    }
-    if ($StudentCount) { 
-        $ProblemsSolved = sprintf( "%.2f", 
-                             $ProblemsSolved/$StudentCount);
-        $TotalProblems /= $StudentCount;
-    } else {
-        $ProblemsSolved = 0;
-        $TotalProblems  = 0;
+    if ($seq->{'randompick'}) {
+        $max = $seq->{'randompick'};
     }
-
-    $Str .= '<table border=2 cellspacing="1">'."\n";
-    $Str .= '<tr><td><b>Students Count</b></td><td><b>'.
-            $StudentCount.'</b></td></tr>'."\n";
-    $Str .= '<tr><td><b>Total Problems</b></td><td><b>'.
-            $TotalProblems.'</b></td></tr>'."\n";
-    $Str .= '<tr><td><b>Average Correct</b></td><td><b>'.
-            $ProblemsSolved.'</b></td></tr>'."\n";
-    $Str .= '</table>'."\n";
-
-    $Str .= '<table border=2 cellspacing="1">'."\n";
-    $Str .= '<tr><th>Title</th><th>Total Problems</th>'.
-            '<th>Average Correct</th></tr>'."\n";
-    foreach my $S(@$sequenceKeys) {
-        my $title=$cache->{$S.':title'};
-	#$Str .= $cache->{$S.':problems'};
-	#my @problems=split(':', $cache->{$S.':problems'});
-	#my $pCount=scalar @problems;
-	my $pCount=MaxSeqPr($cache,@$students[0],$S);
-        my $crr;
-	if ($StudentCount) {
-            $crr=sprintf( "%.2f", $Correct{$S}/$StudentCount );
-        } else {
-            $crr="0.00";
-        }
-        $Str .= '<tr><td>'.$title.
-                '</td><td align=center>'.$pCount.
-                '</td><td align=center>'.$crr.
-                '</td></tr>'."\n";
-    }
-
-    $Str .= '</table>'."\n";
-
-    return $Str;
+    return ($Str,$performance_length,$sum,$max);
 }
 
 #######################################################