--- loncom/interface/statistics/lonstudentassessment.pm 2002/07/24 14:52:32 1.1 +++ loncom/interface/statistics/lonstudentassessment.pm 2003/03/03 22:54:05 1.32 @@ -1,12 +1,10 @@ # The LearningOnline Network with CAPA -# (Publication Handler # -# $Id: lonstudentassessment.pm,v 1.1 2002/07/24 14:52:32 stredwic Exp $ +# $Id: lonstudentassessment.pm,v 1.32 2003/03/03 22:54:05 matthew Exp $ # # Copyright Michigan State University Board of Trustees # # This file is part of the LearningOnline Network with CAPA (LON-CAPA). -# # LON-CAPA is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or @@ -26,214 +24,839 @@ # http://www.lon-capa.org/ # # (Navigate problems for statistical reports -# YEAR=2001 -# 5/5,7/9,7/25/1,8/11,9/13,9/26,10/5,10/9,10/22,10/26 Behrouz Minaei -# 11/1,11/4,11/16,12/14,12/16,12/18,12/20,12/31 Behrouz Minaei -# YEAR=2002 -# 1/22,2/1,2/6,2/25,3/2,3/6,3/17,3/21,3/22,3/26,4/7,5/6 Behrouz Minaei -# 5/12,5/14,5/15,5/19,5/26,7/16 Behrouz Minaei # -### +####################################################### +####################################################### + +=pod + +=head1 NAME + +lonstudentassessment + +=head1 SYNOPSIS + +Presents assessment data about a student or a group of students. -package Apache::lonstudentassessment; +=head1 Subroutines + +=over 4 + +=cut + +####################################################### +####################################################### + +package Apache::lonstudentassessment; use strict; +use Apache::lonstatistics; use Apache::lonhtmlcommon; use Apache::loncoursedata; -use GDBM_File; +use Apache::lonnet; # for logging porpoises +use Spreadsheet::WriteExcel; -sub BuildStudentAssessmentPage { - my ($cacheDB, $students, $courseID, $c)=@_; +####################################################### +####################################################### +=pod - my %cache; +=item Package Variables - my $Ptr = ''; - $Ptr .= ''; +=over 4 - unless(tie(%cache,'GDBM_File',$cacheDB,&GDBM_READER,0640)) { - return 'Unable to tie database.'; - } - - my $selectedName = $cache{'StudentAssessmentStudent'}; - for(my $index=0; - ($selectedName ne 'All Students') && ($index<(scalar @$students)); - $index++) { - my $fullname = $cache{$students->[$index].':fullname'}; - if($fullname eq $selectedName) { - if($cache{'StudentAssessmentMove'} eq 'next') { - if($index == ((scalar @$students) - 1)) { - $selectedName = $students->[0]; - } else { - $selectedName = $students->[$index+1]; - } - } elsif($cache{'StudentAssessmentMove'} eq 'previous') { - if($index == 0) { - $selectedName = $students->[-1]; - } else { - $selectedName = $students->[$index-1]; - } - } else { - $selectedName = $students->[$index]; - } +=item $Statistics Hash ref to store student data. Indexed by symb, + contains hashes with keys 'score' and 'max'. + +=cut + +####################################################### +####################################################### + +my $Statistics; + +####################################################### +####################################################### + +=pod + +=item $show_links 'yes' or 'no' for linking to student performance data + +=item $output_mode 'html', 'excel', or 'csv' for output mode + +=item $show 'all', 'totals', or 'scores' determines how much data is output + +=cut + +####################################################### +####################################################### +my $show_links; +my $output_mode; +my $show; + +####################################################### +####################################################### +# End of package variable declarations + +=pod + +=back + +=cut + +####################################################### +####################################################### + +=pod + +=item &BuildStudentAssessmentPage() + +Inputs: + +=over 4 + +=item $r Apache Request + +=item $c Apache Connection + +=back + +=cut + +####################################################### +####################################################### +sub BuildStudentAssessmentPage { + my ($r,$c)=@_; + undef($Statistics); + # + # 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(''); + $r->rflush(); + if (! exists($ENV{'form.notfirstrun'})) { + $r->print(< + +Please make your selections in the boxes above and hit +the button marked "Update Display". + +

+ENDMSG + return; + } + # + # + my $initialize = \&html_initialize; + my $output_student = \&html_outputstudent; + my $finish = \&html_finish; + # + if ($output_mode eq 'excel') { + $initialize = \&excel_initialize; + $output_student = \&excel_outputstudent; + $finish = \&excel_finish; + } elsif ($output_mode eq 'csv') { + $initialize = \&csv_initialize; + $output_student = \&csv_outputstudent; + $finish = \&csv_finish; + } + # + if($c->aborted()) { return ; } + # + # Call the initialize routine selected above + $initialize->($r); + foreach my $student (@Apache::lonstatistics::Students) { + if($c->aborted()) { + $finish->($r); + return ; + } + # Call the output_student routine selected above + $output_student->($r,$student); + } + # Call the "finish" routine selected above + $finish->($r); + # + return; +} + +####################################################### +####################################################### + +sub get_student_fields_to_show { + my @to_show = @Apache::lonstatistics::SelectedStudentData; + foreach (@to_show) { + if ($_ eq 'all') { + @to_show = @Apache::lonstatistics::StudentDataOrder; last; } } + 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; +} + + +####################################################### +####################################################### + +=pod + +=item &CreateInterface() + +Called by &BuildStudentAssessmentPage to create the top part of the +page which displays the chart. - $Ptr .= ''."\n"; - $Ptr .= ''."\n"; - $Ptr .= ''."\n"; - $Ptr .= ''."\n"; - untie(%cache); - - $Ptr .= '
Select Map'; - $Ptr .= &Apache::lonhtmlcommon::MapOptions(\%cache, 'StudentAssessment'); - $Ptr .= '
Select Student'."\n"; - $Ptr .= &Apache::lonhtmlcommon::StudentOptions(\%cache, $students, - $selectedName, - 'StudentAssessment'); - $Ptr .= '
'; - $Ptr .= 'aborted()); - if(tie(%cache,'GDBM_File',$cacheDB,&GDBM_WRCREAT,0640)) { - &Apache::loncoursedata::ProcessStudentData(\%cache, - $courseData, $_); - if(!$c->aborted()) { $Ptr .= &StudentReport(\%cache, $_); } - untie(%cache); - } - } - if($selected == 0) { - $Ptr .= '

WARNING: '; - $Ptr .= 'Please select a student

'; - } - - return $Ptr; -} - -#---- Student Assessment Web Page -------------------------------------------- - -# ------ Create different Student Report -sub StudentReport { - my ($cache, $name)=@_; +Inputs: None +Returns: A string containing the HTML for the headers and top table for +the chart page. + +=cut + +####################################################### +####################################################### +sub CreateInterface { my $Str = ''; - if($cache->{$name.':error'} =~ /course/) { - my ($username)=split(':',$name); - $Str .= 'No course data for student '; - $Str .= ''.$username.'.
'; - return $Str; - } - - $Str .= ""; - $Str .= ''."\n"; - - my $codes; - my $attempts; - foreach my $sequence (split(':', $cache->{'orderedSequences'})) { - if($cache->{'StudentAssessmentMap'} ne 'All Maps' && - $cache->{'StudentAssessmentMap'} ne $cache->{$sequence.':title'}) { - next; - } - - $Str .= ''; - $Str .= ''; - - $codes = ''; - $attempts = ''; - foreach my $problemID (split(':', $cache->{$sequence.':problems'})) { - my $problem = $cache->{$problemID.':problem'}; - my $LatestVersion = $cache->{$name.':version:'.$problem}; - - # Output dashes for all the parts of this problem if there - # is no version information about the current problem. - if(!$LatestVersion) { - foreach my $part (split(/\:/,$cache->{$sequence.':'. - $problemID. - ':parts'})) { - $codes .= "-,"; - $attempts .= "0,"; - } - next; - } +# $Str .= &CreateLegend(); + $Str .= '
\# Set Title Results Tries
'.$sequence.''.$cache->{$sequence.':title'}.'
'."\n"; + $Str .= ''; + $Str .= ''; + $Str .= ''; + $Str .= ''; + $Str .= ''; + $Str .= ''."\n"; + # + $Str .= ''."\n"; + $Str .= '
SectionsStudent DataSequences and FoldersOutput Format
'."\n"; + $Str .= &Apache::lonstatistics::SectionSelect('Section','multiple',5); + $Str .= ''; + my $only_seq_with_assessments = sub { + my $s=shift; + if ($s->{'num_assess'} < 1) { + return 0; + } else { + return 1; + } + }; + $Str .= &Apache::lonstatistics::StudentDataSelect('StudentData','multiple', + 5,undef); + $Str .= ''."\n"; + $Str .= &Apache::lonstatistics::MapSelect('Maps','multiple,all',5, + $only_seq_with_assessments); + $Str .= ''."\n"; + $Str .= &CreateAndParseOutputSelector(); + $Str .= '
'."\n"; + return $Str; +} + +####################################################### +####################################################### + +=pod + +=item &CreateAndParseOutputSelector() + +=cut + +####################################################### +####################################################### +my @OutputOptions = + ({ name => 'HTML, with links', + value => 'html, with links', + description => ''}, + { name => 'HTML, without links', + value => 'html, without links', + description => ''}, + { name => 'HTML, totals', + value => 'html, totals', + description => ''}, + { name => 'HTML, scores only', + value => 'html, scores only', + description => ''}, + { name => 'Excel, totals', + value => 'excel, totals', + description => ''}, + { 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 => ''}, + { name => 'CSV, everything', + value => 'csv, everything', + description => ''} + ); + +sub CreateAndParseOutputSelector { + my $Str = ''; + my $elementname = 'outputmode'; + # + # Format for output options is 'mode, restrictions'; + my $selected = 'html, with links'; + if (exists($ENV{'form.'.$elementname})) { + if (ref($ENV{'form.'.$elementname} eq 'ARRAY')) { + $selected = $ENV{'form.'.$elementname}->[0]; + } else { + $selected = $ENV{'form.'.$elementname}; + } + } + # + # Set package variables describing output mode + $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'; + } + # + # Build the form element + $Str = qq/"; + return $Str; +} + +####################################################### +####################################################### + +=pod + +=head2 HTML output routines + +=item &html_initialize($r) + +Create labels for the columns of student data to show. + +=item &html_outputstudent($r,$student) + +Return a line of the chart for a student. + +=item &html_finish($r) + +=cut + +####################################################### +####################################################### +{ + my $padding; + my $count; + +sub html_initialize { + my ($r) = @_; + # + $padding = ' 'x3; + $count = 1; + # + my $Str = "
\n";
+    # First, the @StudentData fields need to be listed
+    my @to_show = &get_student_fields_to_show();
+    foreach my $field (@to_show) {
+        my $title=$Apache::lonstatistics::StudentData{$field}->{'title'};
+        my $base =$Apache::lonstatistics::StudentData{$field}->{'base_width'};
+        my $width=$Apache::lonstatistics::StudentData{$field}->{'width'};
+        $Str .= $title.' 'x($width-$base).$padding;
+    }
+    # Now the selected sequences need to be listed
+    foreach my $sequence (&get_sequences_to_show) {
+        my $title = $sequence->{'title'};
+        my $base  = $sequence->{'base_width'};
+        my $width = $sequence->{'width'};
+        $Str .= $title.' 'x($width-$base).$padding;
+    }
+    $Str .= "total (of shown problems)
\n"; + $Str .= "
";
+    $r->print($Str);
+    $r->rflush();
+    return;
+}
+
+sub html_outputstudent {
+    my ($r,$student) = @_;
+    my $Str = '';
+    # First, the @StudentData fields need to be listed
+    my @to_show = &get_student_fields_to_show();
+    foreach my $field (@to_show) {
+        my $title=$student->{$field};
+        my $base = length($title);
+        my $width=$Apache::lonstatistics::StudentData{$field}->{'width'};
+        $Str .= $title.' 'x($width-$base).$padding;
+    }
+    # Get ALL the students 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;
+    }
+    if (scalar(@tmp) < 1) {
+        $Str .= 'No Course Data'."\n";
+        $r->print($Str);
+        $r->rflush();
+        return;
+    }
+    #
+    # By sequence build up the data
+    my $studentstats;
+    my $PerformanceStr = '';
+    foreach my $seq (&get_sequences_to_show) {
+        my ($performance,$score,$seq_max) =
+            &StudentPerformanceOnSequence($student,\%StudentsData,
+                                          $seq,$show_links);
+        my $ratio = $score.'/'.$seq_max;
+        #
+        if ($show eq 'totals') {
+            $performance = ' 'x(length($seq_max)-length($score)).$ratio;
+            $performance .= ' 'x($seq->{'width'}-length($performance));
+        } elsif ($show eq 'scores') {
+            $performance = $score;
+            $performance .= ' 'x($seq->{'width'}-length($performance));
+        } else {
+            # Pad with extra spaces
+            $performance .= ' 'x($seq->{'width'}-$seq_max-
+                                 length($ratio)
+                                 ).$ratio;
+        }
+        #
+        $Str .= $performance.$padding;
+        #
+        $studentstats->{$seq->{'symb'}}->{'score'}= $score;
+        $studentstats->{$seq->{'symb'}}->{'max'}  = $seq_max;
+    }
+    #
+    # Total it up and store the statistics info.
+    my ($score,$max) = (0,0);
+    while (my ($symb,$seq_stats) = each (%{$studentstats})) {
+        $Statistics->{$symb}->{'score'} += $seq_stats->{'score'};
+        $Statistics->{$symb}->{'max'}   += $seq_stats->{'max'};
+        $score += $seq_stats->{'score'};
+        $max   += $seq_stats->{'max'};
+    }
+    $Str .= ' '.' 'x(length($max)-length($score)).$score.'/'.$max;
+    $Str .= " \n";
+    $r->print($Str);
+    #
+    $count++;
+    if($count % 5 == 0) {
+        $r->print("
");
+    }
+    #
+    $r->rflush();
+    return;
+}    
+
+sub html_finish {
+    my ($r) = @_;
+    $r->print("
\n"); + $r->rflush(); + return; +} + +} + +####################################################### +####################################################### + +=pod + +=head2 EXCEL subroutines - my %partData=undef; - # Initialize part data, display skips correctly - # Skip refers to when a student made no submissions on that - # part/problem. - foreach my $part (split(/\:/,$cache->{$sequence.':'. - $problemID. - ':parts'})) { - $partData{$part.':tries'}=0; - $partData{$part.':code'}='-'; +=item &excel_initialize($r) + +=item &excel_outputstudent($r,$student) + +=item &excel_finish($r) + +=cut + +####################################################### +####################################################### +{ + +my $excel_sheet; +my $excel_workbook; + +my $filename; +my $rows_output; +my $cols_output; + +my $num_students; +my $start_time; + +sub excel_initialize { + my ($r) = @_; + # + $filename = '/prtspool/'. + $ENV{'user.name'}.'_'.$ENV{'user.domain'}.'_'. + time.'_'.rand(1000000000).'.xls'; + # + $excel_workbook = undef; + $excel_sheet = undef; + # + $rows_output = 0; + $cols_output = 0; + # + $num_students = 0; + $start_time = time; + # + # Create sheet + $excel_workbook = Spreadsheet::WriteExcel->new('/home/httpd'.$filename); + # + # Check for errors + if (! defined($excel_workbook)) { + $r->log_error("Error creating excel spreadsheet $filename: $!"); + $r->print("Problems creating new Excel file. ". + "This error has been logged. ". + "Please alert your LON-CAPA administrator"); + return ; + } + # + # The excel spreadsheet stores temporary data in files, then put them + # together. If needed we should be able to disable this (memory only). + # The temporary directory must be specified before calling 'addworksheet'. + # File::Temp is used to determine the temporary directory. + $excel_workbook->set_tempdir($Apache::lonnet::tmpdir); + # + # Add a worksheet + $excel_sheet = $excel_workbook->addworksheet + ($ENV{'course.'.$ENV{'request.course.id'}.'.description'}); + # + # Add the student headers + foreach my $field (&get_student_fields_to_show()) { + $excel_sheet->write(1,$cols_output++,$field); + } + # + # Add the Sequence Headers + foreach my $seq (&get_sequences_to_show) { + $excel_sheet->write(0,$cols_output,$seq->{'title'}); + if ($show eq 'totals') { + $excel_sheet->write(1,$cols_output,'score'); + $excel_sheet->write(1,$cols_output+1,'maximum'); + $cols_output += 2; + } else { + $cols_output++; + } + } + # + # Bookkeeping + if ($show eq 'totals') { + $rows_output = 2; + } else { + $rows_output = 1; + } + # + # Let the user know what we are doing + my $studentcount = scalar(@Apache::lonstatistics::Students); + $r->print("

Compiling Excel spreadsheet for ". + $studentcount.' student'); + $r->print('s') if ($studentcount > 1); + $r->print("

\n"); + $r->rflush(); + # + return; +} + +sub excel_outputstudent { + my ($r,$student) = @_; + return if (! defined($excel_sheet)); + $cols_output=0; + # + # Write out student data + my @to_show = &get_student_fields_to_show(); + foreach my $field (@to_show) { + $excel_sheet->write($rows_output,$cols_output++,$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; + } + # + # Write out sequence scores and totals data + foreach my $seq (&get_sequences_to_show) { + my ($performance,$score,$seq_max) = + &StudentPerformanceOnSequence($student,\%StudentsData, + $seq,'no'); + if ($show eq 'totals' || $show eq 'scores') { + $excel_sheet->write($rows_output,$cols_output++,$score); + } + if ($show eq 'totals') { + $excel_sheet->write($rows_output,$cols_output++,$seq_max); + } + } + # + # Bookkeeping + $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.
\n"); + $r->rflush(); + } + return; +} - # Looping through all the versions of each part, starting with the - # oldest version. Basically, it gets the most recent - # set of grade data for each part. - for(my $Version=1; $Version<=$LatestVersion; $Version++) { - foreach my $part (split(/\:/,$cache->{$sequence.':'. - $problemID. - ':parts'})) { - - if(!defined($cache->{$name.":$Version:$problem". - ":resource.$part.solved"})) { - # No grade for this submission, so skip - next; - } +sub excel_finish { + my ($r) = @_; + return if (! defined($excel_sheet)); + # + # Write the excel file + $excel_workbook->close(); + my $c = $r->connection(); + # + return if($c->aborted()); + # + # Tell the user where to get their excel file + $r->print('

'. + 'Your Excel spreadsheet.'."\n"); + my $total_time = time - $start_time; + if (int ($total_time / 60) > 0) { + $total_time = int($total_time/60).' minutes, '.($total_time % 60); + } + $r->print('
'.$total_time.' seconds total'); + $r->rflush(); + return; +} + +} +####################################################### +####################################################### + +=pod + +=head2 CSV output routines + +=item &csv_initialize($r) - my $tries=0; - my $code='U'; +=item &csv_outputstudent($r,$student) + +=item &csv_finish($r) + +=cut + +####################################################### +####################################################### +{ + +sub csv_initialize{ + my ($r) = @_; + $r->print("

Not implemented yet

"); + return; +} - $tries = $cache->{$name.":$Version:$problem". - ":resource.$part.tries"}; - $partData{$part.':tries'}=($tries) ? $tries : 0; - - my $val = $cache->{$name.":$Version:$problem". - ":resource.$part.solved"}; - if ($val eq 'correct_by_student') {$code = 'Y';} - elsif ($val eq 'correct_by_override') {$code = 'y';} - elsif ($val eq 'incorrect_attempted') {$code = 'N';} - elsif ($val eq 'incorrect_by_override'){$code = 'N';} - elsif ($val eq 'excused') {$code = 'x';} - $partData{$part.':code'}=$code; +sub csv_outputstudent { + my ($r,$student) = @_; +} + +sub csv_finish { + my ($r) = @_; +} + +} + +####################################################### +####################################################### + +=pod + +=item &StudentPerformanceOnSequence() + +Inputs: + +=over 4 + +=item $student + +=item $studentdata Hash ref to all student data + +=item $seq Hash ref, the sequence we are working on + +=item $links if defined we will output links to each resource. + +=back + +=cut + +####################################################### +####################################################### +sub StudentPerformanceOnSequence { + my ($student,$studentdata,$seq,$links) = @_; + $links = 'no' if (! defined($links)); + my $Str = ''; + my ($sum,$max) = (0,0); + 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++; + my $symbol = ' '; # default to space + # + if (exists($resource_data->{'resource.'.$partnum.'.solved'})) { + my $status = $resource_data->{'resource.'.$partnum.'.solved'}; + if ($status eq 'correct_by_override') { + $symbol = '+'; + $sum++; + } elsif ($status eq 'incorrect_by_override') { + $symbol = '-'; + } elsif ($status eq 'ungraded_attempted') { + $symbol = '#'; + } elsif ($status eq 'incorrect_attempted') { + $symbol = '.'; + } elsif ($status eq 'excused') { + $symbol = 'x'; + $max--; + } elsif ($status eq 'correct_by_student' && + exists($resource_data->{'resource.'.$partnum.'.tries'})){ + my $num = $resource_data->{'resource.'.$partnum.'.tries'}; + if ($num > 9) { + $symbol = '*'; + } elsif ($num > 0) { + $symbol = $num; + } else { + $symbol = ' '; + } + $sum++; + } else { + $symbol = ' '; + } + } else { + # Unsolved. Did they try? + if (exists($resource_data->{'resource.'.$partnum.'.tries'})){ + $symbol = '.'; + } else { + $symbol = ' '; } } - - # Loop through all the parts for the current problem in the - # correct order and prepare the output - foreach (split(/\:/,$cache->{$sequence.':'.$problemID. - ':parts'})) { - $codes .= $partData{$_.':code'}.','; - $attempts .= $partData{$_.':tries'}.','; + # + if ($links eq 'yes' && $symbol ne ' ') { + $symbol = ''.$symbol.''; } + $value .= $symbol; + } + $Str .= $value; + } + return ($Str,$sum,$max); +} + +####################################################### +####################################################### +sub StudentAverageTotal { + my ($cache, $students, $sequenceKeys)=@_; + my $Str = "\nSummary Tables:\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; + } + + $Str .= ''."\n"; + $Str .= ''."\n"; + $Str .= ''."\n"; + $Str .= ''."\n"; + $Str .= '
Students Count'. + $StudentCount.'
Total Problems'. + $TotalProblems.'
Average Correct'. + $ProblemsSolved.'
'."\n"; + + $Str .= ''."\n"; + $Str .= ''. + ''."\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"; } - $codes =~ s/,$//; - $attempts =~ s/,$//; - $Str .= ''; - $Str .= ''; - $Str .= ''."\n"; + $Str .= ''."\n"; } $Str .= '
TitleTotal ProblemsAverage Correct
'.$codes.''.$attempts.'
'.$title. + ''.$pCount. + ''.$crr. + '
'."\n"; @@ -241,6 +864,48 @@ sub StudentReport { return $Str; } -#---- END Student Assessment Web Page ---------------------------------------- +####################################################### +####################################################### + +=pod + +=item &CreateLegend() + +This function returns a formatted string containing the legend for the +chart. The legend describes the symbols used to represent grades for +problems. + +=cut + +####################################################### +####################################################### +sub CreateLegend { + my $Str = "

".
+              "   1  correct by student in 1 try\n".
+              "   7  correct by student in 7 tries\n".
+              "   *  correct by student in more than 9 tries\n".
+	      "   +  correct by hand grading or override\n".
+              "   -  incorrect by override\n".
+	      "   .  incorrect attempted\n".
+	      "   #  ungraded attempted\n".
+              "      not attempted (blank field)\n".
+	      "   x  excused".
+              "

"; + return $Str; +} + +####################################################### +####################################################### + +=pod + +=back + +=cut + +####################################################### +####################################################### + 1; + __END__