# The LearningOnline Network with CAPA # # $Id: lonstudentassessment.pm,v 1.102.2.1 2004/08/27 22:16:56 albertel 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 # (at your option) any later version. # # LON-CAPA is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with LON-CAPA; if not, write to the Free Software # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA # # /home/httpd/html/adm/gpl.txt # # http://www.lon-capa.org/ # # (Navigate problems for statistical reports # ####################################################### ####################################################### =pod =head1 NAME lonstudentassessment =head1 SYNOPSIS Presents assessment data about a student or a group of students. =head1 Subroutines =over 4 =cut ####################################################### ####################################################### package Apache::lonstudentassessment; use strict; use Apache::lonstatistics; use Apache::lonhtmlcommon; use Apache::loncommon(); use Apache::loncoursedata; use Apache::lonnet; # for logging porpoises use Apache::lonlocal; use Spreadsheet::WriteExcel; use Spreadsheet::WriteExcel::Utility(); ####################################################### ####################################################### =pod =item Package Variables =over 4 =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 =item $single_student_mode evaluates to true if we are showing only one student. =cut ####################################################### ####################################################### my $show_links; my $output_mode; my $chosen_output; my $single_student_mode; ####################################################### ####################################################### # 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); undef($show_links); undef($output_mode); undef($chosen_output); undef($single_student_mode); # my %Saveable_Parameters = ('Status' => 'scalar', 'chartoutputmode' => 'scalar', 'chartoutputdata' => 'scalar', 'Section' => 'array', 'StudentData' => 'array', 'Maps' => 'array'); &Apache::loncommon::store_course_settings('chart',\%Saveable_Parameters); &Apache::loncommon::restore_course_settings('chart',\%Saveable_Parameters); # &Apache::lonstatistics::PrepareClasslist(); # $single_student_mode = 0; $single_student_mode = 1 if ($ENV{'form.SelectedStudent'}); &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'}, ['selectstudent']); if ($ENV{'form.selectstudent'}) { &Apache::lonstatistics::DisplayClasslist($r); return; } # # 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->print(''); $r->rflush(); # if (! exists($ENV{'form.notfirstrun'}) && ! $single_student_mode) { 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 ; } # # 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; } # # Perform generic initialization tasks # Since we use lonnet::EXT to retrieve problem weights, # to ensure current data we must clear the caches out. # This makes sure that parameter changes at the student level # are immediately reflected in the chart. &Apache::lonnet::clear_EXT_cache_status(); # # Clean out loncoursedata's package data, just to be safe. &Apache::loncoursedata::clear_internal_caches(); # # Call the initialize routine selected above $initialize->($r); foreach my $student (@Students) { if($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 next_and_previous_buttons { my $Str = ''; $Str .= ''; # # Build the previous student link my $previous = &Apache::lonstatistics::previous_student(); my $previousbutton = ''; if (defined($previous)) { my $sname = $previous->{'username'}.':'.$previous->{'domain'}; $previousbutton .= ''; } else { $previousbutton .= ''; } # # Build the next student link my $next = &Apache::lonstatistics::next_student(); my $nextbutton = ''; if (defined($next)) { my $sname = $next->{'username'}.':'.$next->{'domain'}; $nextbutton .= ''; } else { $nextbutton .= ''; } # # Build the 'all students' button my $all = ''; $all .= ''; $Str .= $previousbutton.(' 'x5).$all.(' 'x5).$nextbutton; return $Str; } ####################################################### ####################################################### sub get_student_fields_to_show { my @to_show = @Apache::lonstatistics::SelectedStudentData; foreach (@to_show) { if ($_ eq 'all') { @to_show = @Apache::lonstatistics::StudentDataOrder; last; } } return @to_show; } ####################################################### ####################################################### =pod =item &CreateInterface() Called by &BuildStudentAssessmentPage to create the top part of the page which displays the chart. Inputs: None Returns: A string containing the HTML for the headers and top table for the chart page. =cut ####################################################### ####################################################### sub CreateInterface { my $Str = ''; $Str .= &Apache::lonhtmlcommon::breadcrumbs(undef,'Chart'); # $Str .= &CreateLegend(); $Str .= ''."\n"; $Str .= ''; $Str .= ''; $Str .= ''; $Str .= ''; $Str .= ''; $Str .= ''; $Str .= ''; $Str .= ''."\n"; # $Str .= ''."\n"; $Str .= '
'.&mt('Sections').''.&mt('Student Data').''.&mt('Enrollment Status').''.&mt('Sequences and Folders').''.&mt('Output Format').''. &Apache::loncommon::help_open_topic("Chart_Output_Formats"). ''.&mt('Output Data').''. &Apache::loncommon::help_open_topic("Chart_Output_Data"). '
'."\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::lonhtmlcommon::StatusOptions(undef,undef,5); $Str .= ''."\n"; $Str .= &Apache::lonstatistics::MapSelect('Maps','multiple,all',5, $only_seq_with_assessments); $Str .= ''."\n"; $Str .= &CreateAndParseOutputSelector(); $Str .= ''."\n"; $Str .= &CreateAndParseOutputDataSelector(); $Str .= '
'."\n"; $Str .= ''; $Str .= ' 'x5; $Str .= ''; $Str .= ' 'x5; $Str .= ''; $Str .= ' 'x5; $Str .= '
'; return $Str; } ####################################################### ####################################################### =pod =item &CreateAndParseOutputSelector() =cut ####################################################### ####################################################### my @OutputOptions = ({ name => 'HTML, with links', value => 'html, with links', description => 'Output HTML with each symbol linked to the problem '. 'which generated it.', mode => 'html', 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_links => 'all', }, { name => 'HTML, without links', value => 'html, without links', 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_links => 'no', }, { name => 'Excel', value => 'excel', description => 'Output an Excel file (compatable with Excel 95).', mode => 'excel', show_links => 'no', }, { name => 'CSV', value => 'csv', description => 'Output a comma separated values file suitable for '. 'import into a spreadsheet program. Using this method as opposed '. 'to Excel output allows you to organize your data before importing'. ' it into a spreadsheet program.', mode => 'csv', show_links => 'no', }, ); sub OutputDescriptions { my $Str = ''; $Str .= "

Output Formats

\n"; $Str .= "
\n"; foreach my $outputmode (@OutputOptions) { $Str .="
".$outputmode->{'name'}."
\n"; $Str .="
".$outputmode->{'description'}."
\n"; } $Str .= "
\n"; return $Str; } sub CreateAndParseOutputSelector { my $Str = ''; my $elementname = 'chartoutputmode'; &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'}, [$elementname]); # # Format for output options is 'mode, restrictions'; my $selected = 'html, without links'; if (exists($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'; foreach my $option (@OutputOptions) { next if ($option->{'value'} ne $selected); $output_mode = $option->{'mode'}; $show_links = $option->{'show_links'}; } # # Build the form element $Str = qq/"; return $Str; } ## ## Data selector stuff ## my @OutputDataOptions = ( { name => 'Scores Summary', base => 'scores', value => 'sum and total', scores => 1, tries => 0, every_problem => 0, sequence_sum => 1, sequence_max => 1, grand_total => 1, grand_maximum => 1, summary_table => 1, maximum_row => 1, shortdesc => 'Total Score and Maximum Possible for each '. 'Sequence or Folder', longdesc => 'The score of each student as well as the '. ' maximum possible on each Sequence or Folder.', }, { name => 'Scores Per Problem', base => 'scores', value => 'scores', scores => 1, tries => 0, correct => 0, every_problem => 1, sequence_sum => 1, sequence_max => 1, grand_total => 1, grand_maximum => 1, summary_table => 1, maximum_row => 1, shortdesc => 'Score on each Problem Part', longdesc =>'The students score on each problem part, computed as'. 'the part weight * part awarded', }, { name =>'Tries', base =>'tries', value => 'tries', scores => 0, tries => 1, correct => 0, every_problem => 1, sequence_sum => 0, sequence_max => 0, grand_total => 0, grand_maximum => 0, summary_table => 0, maximum_row => 0, shortdesc => 'Number of Tries before success on each Problem Part', longdesc =>'The number of tries before success on each problem part.', }, { name =>'Parts Correct', base =>'tries', value => 'parts correct total', scores => 0, tries => 0, correct => 1, every_problem => 1, sequence_sum => 1, sequence_max => 1, grand_total => 1, grand_maximum => 1, summary_table => 1, maximum_row => 0, shortdesc => 'Number of Problem Parts completed successfully.', longdesc => 'The Number of Problem Parts completed successfully and '. 'the maximum possible for each student', }, ); sub HTMLifyOutputDataDescriptions { my $Str = ''; $Str .= "

Output Data

\n"; $Str .= "
\n"; foreach my $option (@OutputDataOptions) { $Str .= '
'.$option->{'name'}.'
'; $Str .= '
'.$option->{'longdesc'}.'
'."\n"; } $Str .= "
\n"; return $Str; } sub CreateAndParseOutputDataSelector { my $Str = ''; my $elementname = 'chartoutputdata'; # my $selected = 'scores'; if (exists($ENV{'form.'.$elementname})) { if (ref($ENV{'form.'.$elementname} eq 'ARRAY')) { $selected = $ENV{'form.'.$elementname}->[0]; } else { $selected = $ENV{'form.'.$elementname}; } } # $chosen_output = $OutputDataOptions[0]; foreach my $option (@OutputDataOptions) { if ($option->{'value'} eq $selected) { $chosen_output = $option; } } # # 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; my $nodata_count; # The number of students for which there is no data my %prog_state; # progress state used by loncommon PrgWin routines my $total_sum_width; sub html_initialize { my ($r) = @_; # $padding = ' 'x3; $count = 0; $nodata_count = 0; undef(%prog_state); # $r->print("

".$ENV{'course.'.$ENV{'request.course.id'}.'.description'}. "  ".localtime(time)."

"); if ($chosen_output->{'base'} !~ /^final table/) { $r->print("

".$chosen_output->{'shortdesc'}."

"); } 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;
    }
    #
    # Compute the column widths and output the sequence titles
    my $total_count;
    foreach my $sequence (&Apache::lonstatistics::Sequences_with_Assess()){
        #
        # Comptue column widths
        $sequence->{'width_sum'} = 0;
        if ($chosen_output->{'sequence_sum'}) {
            if ($chosen_output->{'every_problem'}) {
                # Use 1 digit for a space
                $sequence->{'width_sum'} += 1;            
            }
	    $total_count += $sequence->{'num_assess_parts'};
            # Use 3 digits for the sum
            $sequence->{'width_sum'} += 3;
        }
        if ($chosen_output->{'sequence_max'}) {
            if ($sequence->{'width_sum'}>0) {
                # One digit for the '/'
                $sequence->{'width_sum'} +=1;
            }
            # Use 3 digits for the total
            $sequence->{'width_sum'}+=3;
        }
	#
        if ($chosen_output->{'every_problem'}) {
            # one problem per digit
            $sequence->{'width_problem'} = $sequence->{'num_assess_parts'};
        } else {
            $sequence->{'width_problem'} = 0;
        }
        $sequence->{'width_total'} = $sequence->{'width_problem'} + 
                                     $sequence->{'width_sum'};
        if ($sequence->{'width_total'} < length(&HTML::Entities::decode($sequence->{'title'}))) {
            $sequence->{'width_total'} = length(&HTML::Entities::decode($sequence->{'title'}));
        }
        #
        # Output the sequence titles
        $Str .= 
            $sequence->{'title'}.' 'x($sequence->{'width_total'}-
                                      length($sequence->{'title'})
                                      ).$padding;
    }
    $total_sum_width = length($total_count)+1;
    $Str .= "    total
\n"; $Str .= "
";
    $r->print($Str);
    $r->rflush();
    return;
}

sub html_outputstudent {
    my ($r,$student) = @_;
    my $Str = '';
    #
    if($count++ % 5 == 0 && $count > 0) {
        $r->print("
");
    }
    # 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) {
        $nodata_count++;
        $Str .= 'No Course Data'."\n";
        $r->print($Str);
        $r->rflush();
        return;
    }
    #
    # By sequence build up the data
    my $studentstats;
    my $PerformanceStr = '';
    foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
        my ($performance,$performance_length,$score,$seq_max,$rawdata);
        if ($chosen_output->{'tries'}) {
            ($performance,$performance_length,$score,$seq_max,$rawdata) =
                &StudentTriesOnSequence($student,\%StudentsData,
                                        $seq,$show_links);
        } else {
            ($performance,$performance_length,$score,$seq_max,$rawdata) =
                &StudentPerformanceOnSequence($student,\%StudentsData,
                                              $seq,$show_links);
        }
        my $ratio='';
        if ($chosen_output->{'every_problem'}) {
            $ratio .= ' ';
        }
        if ($chosen_output->{'sequence_sum'} && $score ne ' ') {
            $ratio .= sprintf("%3.0f",$score);
        } elsif($chosen_output->{'sequence_sum'}) {
            $ratio .= ' 'x3;
        }
        if ($chosen_output->{'sequence_max'}) {
            if ($chosen_output->{'sequence_sum'}) {
                $ratio .= '/';
            }
            $ratio .= sprintf("%3.0f",$seq_max);
        }
        #
        if (! $chosen_output->{'every_problem'}) {
            $performance = '';
	    $performance_length=0;
        }
        $performance .= ' 'x($seq->{'width_total'}-$performance_length-$seq->{'width_sum'}).
            $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,$max);
    while (my ($symb,$seq_stats) = each (%{$studentstats})) {
        $Statistics->{$symb}->{'score'} += $seq_stats->{'score'};
        if ($Statistics->{$symb}->{'max'} < $seq_stats->{'max'}) {
            $Statistics->{$symb}->{'max'} = $seq_stats->{'max'};
        }
        if ($seq_stats->{'score'} ne ' ') {
            $score += $seq_stats->{'score'};
            $Statistics->{$symb}->{'num_students'}++;
        }
        $max   += $seq_stats->{'max'};
    }
    if (! defined($score)) {
        $score = ' ' x $total_sum_width;
    }
    $Str .= ' '.' 'x($total_sum_width-length($score)).$score.' / '.$max;
    $Str .= " \n";
    #
    $r->print($Str);
    #
    $r->rflush();
    return;
}    

sub html_finish {
    my ($r) = @_;
    #
    # Check for suppressed output and close the progress window if so
    $r->print("
\n"); if ($chosen_output->{'summary_table'}) { if ($single_student_mode) { $r->print(&SingleStudentTotal()); } else { $r->print(&StudentAverageTotal()); } } $r->rflush(); return; } sub StudentAverageTotal { my $Str = "

Summary Tables

\n"; # my $max_students; # my $total_ave = 0; # my $total_max = 0; $Str .= ''."\n"; $Str .= "\n"; foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) { my $ave; my $num_students = $Statistics->{$seq->{'symb'}}->{'num_students'}; # if ($num_students > $max_students) { # $max_students = $num_students; # } if ($num_students > 0) { $ave = int(100* ($Statistics->{$seq->{'symb'}}->{'score'}/$num_students) )/100; } else { $ave = 0; } # $total_ave += $ave; my $max = $Statistics->{$seq->{'symb'}}->{'max'}; # $total_max += $max; $ave = sprintf("%.2f",$ave); $Str .= ''. ''. ''."\n"; } # $total_ave = sprintf('%.2f',$total_ave); # only two digit $Str .= "
TitleAverageMaximum
'.$seq->{'title'}.''.$ave.' '.$max.' '.'
\n"; # $Str .= ''."\n"; # $Str .= ''. # "\n"; # $Str .= ''. # ''. # ''. # ''; # $Str .= "
Number of StudentsAverageMaximum
'.$max_students.''.$total_ave.' '.''.$total_max.' '.'
\n"; return $Str; } sub SingleStudentTotal { my $student = &Apache::lonstatistics::current_student(); my $Str = "

Summary table for ".$student->{'fullname'}." ". $student->{'username'}.'@'.$student->{'domain'}."

\n"; $Str .= ''."\n"; $Str .= "\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 .= ''. ''. ''."\n"; $total += $value; $total_max +=$max; } $Str .= ''. ''. '\n"; $Str .= "
Sequence or FolderScoreMaximum
'.$seq->{'title'}.''.$value.''.$max.'
Total'.$total.''.$total_max."
\n"; return $Str; } } ####################################################### ####################################################### =pod =head2 EXCEL subroutines =item &excel_initialize($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 %prog_state; # progress window state my $request_aborted; my $total_formula; my $maximum_formula; sub excel_initialize { my ($r) = @_; # undef ($excel_sheet); undef ($excel_workbook); undef ($filename); undef ($rows_output); undef ($cols_output); undef (%prog_state); undef ($request_aborted); undef ($total_formula); undef ($maximum_formula); # my $total_columns = scalar(&get_student_fields_to_show()); my $num_students = scalar(@Apache::lonstatistics::Students); # foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) { if ($chosen_output->{'every_problem'}) { $total_columns += $seq->{'num_assess_parts'}; } # Add 2 because we need a 'sequence_sum' and 'total' column for each $total_columns += 2; } if ($chosen_output->{'base'} eq 'tries' && $total_columns > 255) { $r->print(<Unable to Complete Request

LON-CAPA is unable to produce your Excel spreadsheet because your selections will result in more than 255 columns. Excel allows only 255 columns in a spreadsheet.

You may consider reducing the number of Sequences or Folders you have selected.

LON-CAPA can produce CSV files of this data or Excel files of the summary data (Parts Correct or Parts Correct & Totals).

END $request_aborted = 1; } if ($chosen_output->{'base'} eq 'scores' && $total_columns > 255) { $r->print(<Unable to Complete Request

LON-CAPA is unable to produce your Excel spreadsheet because your selections will result in more than 255 columns. Excel allows only 255 columns in a spreadsheet.

You may consider reducing the number of Sequences or Folders you have selected.

LON-CAPA can produce CSV files of this data or Excel files of the Scores Summary data.

END $request_aborted = 1; } return if ($request_aborted); # $filename = '/prtspool/'. $ENV{'user.name'}.'_'.$ENV{'user.domain'}.'_'. time.'_'.rand(1000000000).'.xls'; # $excel_workbook = undef; $excel_sheet = undef; # $rows_output = 0; $cols_output = 0; # # Determine rows my $header_row = $rows_output++; my $description_row = $rows_output++; $rows_output++; # blank row my $summary_header_row; if ($chosen_output->{'summary_table'}) { $summary_header_row = $rows_output++; $rows_output+= scalar(&Apache::lonstatistics::Sequences_with_Assess()); $rows_output++; } my $sequence_name_row = $rows_output++; my $resource_name_row = $rows_output++; my $maximum_data_row = $rows_output++; if (! $chosen_output->{'maximum_row'}) { $rows_output--; } my $first_data_row = $rows_output++; # # 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); # my $format = &Apache::loncommon::define_excel_formats($excel_workbook); # # Add a worksheet my $sheetname = $ENV{'course.'.$ENV{'request.course.id'}.'.description'}; $sheetname = &Apache::loncommon::clean_excel_name($sheetname); $excel_sheet = $excel_workbook->addworksheet($sheetname); # # Put the course description in the header $excel_sheet->write($header_row,$cols_output++, $ENV{'course.'.$ENV{'request.course.id'}.'.description'}, $format->{'h1'}); $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]; } } $excel_sheet->write($header_row,$cols_output++,$sectionstring, $format->{'h3'}); $cols_output += scalar(@Sections); # # Put the date in there too $excel_sheet->write($header_row,$cols_output++, 'Compiled on '.localtime(time),$format->{'h3'}); # $cols_output = 0; $excel_sheet->write($description_row,$cols_output++, $chosen_output->{'shortdesc'}, $format->{'h3'}); ############################################## # Output headings for the raw data ############################################## # # Add the student headers $cols_output = 0; foreach my $field (&get_student_fields_to_show()) { $excel_sheet->write($resource_name_row,$cols_output++,$field, $format->{'bold'}); } # # Add the remaining column headers my $total_formula_string = '=0'; my $maximum_formula_string = '=0'; foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) { $excel_sheet->write($sequence_name_row,, $cols_output,$seq->{'title'},$format->{'bold'}); # Determine starting cell $seq->{'Excel:startcell'}= &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell ($first_data_row,$cols_output); $seq->{'Excel:startcol'}=$cols_output; my $count = 0; if ($chosen_output->{'every_problem'}) { # Put the names of the problems and parts into the sheet foreach my $res (@{$seq->{'contents'}}) { if ($res->{'type'} ne 'assessment' || ! exists($res->{'parts'}) || ref($res->{'parts'}) ne 'ARRAY' || scalar(@{$res->{'parts'}}) < 1) { next; } if (scalar(@{$res->{'parts'}}) > 1) { foreach my $part (@{$res->{'parts'}}) { $excel_sheet->write($resource_name_row, $cols_output++, $res->{'title'}.' part '.$part, $format->{'bold'}); } } else { $excel_sheet->write($resource_name_row, $cols_output++, $res->{'title'},$format->{'bold'}); } $count++; } } # Determine ending cell if ($count <= 1) { $seq->{'Excel:endcell'} = $seq->{'Excel:startcell'}; $seq->{'Excel:endcol'} = $seq->{'Excel:startcol'}; } else { $seq->{'Excel:endcell'} = &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell ($first_data_row,$cols_output-1); $seq->{'Excel:endcol'} = $cols_output-1; } # Create the formula for summing up this sequence if (! exists($seq->{'Excel:endcell'}) || ! defined($seq->{'Excel:endcell'})) { $seq->{'Excel:endcell'} = $seq->{'Excel:startcell'}; } $seq->{'Excel:sum'}= $excel_sheet->store_formula ('=SUM('.$seq->{'Excel:startcell'}. ':'.$seq->{'Excel:endcell'}.')'); # Determine cell the score is held in $seq->{'Excel:scorecell'} = &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell ($first_data_row,$cols_output); $seq->{'Excel:scorecol'}=$cols_output; if ($chosen_output->{'base'} eq 'parts correct total') { $excel_sheet->write($resource_name_row,$cols_output++, 'parts correct', $format->{'bold'}); } elsif ($chosen_output->{'sequence_sum'}) { if ($chosen_output->{'correct'}) { # Only reporting the number correct, so do not call it score $excel_sheet->write($resource_name_row,$cols_output++, 'sum', $format->{'bold'}); } else { $excel_sheet->write($resource_name_row,$cols_output++, 'score', $format->{'bold'}); } } # $total_formula_string.='+'. &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell ($first_data_row,$cols_output-1); if ($chosen_output->{'sequence_max'}) { $excel_sheet->write($resource_name_row,$cols_output, 'maximum', $format->{'bold'}); $seq->{'Excel:maxcell'} = &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell ($first_data_row,$cols_output); $seq->{'Excel:maxcol'}=$cols_output; $maximum_formula_string.='+'. &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell ($first_data_row,$cols_output); $cols_output++; } } if ($chosen_output->{'grand_total'}) { $excel_sheet->write($resource_name_row,$cols_output++,'Total', $format->{'bold'}); } if ($chosen_output->{'grand_maximum'}) { $excel_sheet->write($resource_name_row,$cols_output++,'Max. Total', $format->{'bold'}); } $total_formula = $excel_sheet->store_formula($total_formula_string); $maximum_formula = $excel_sheet->store_formula($maximum_formula_string); ############################################## # Output a row for MAX, if appropriate ############################################## if ($chosen_output->{'maximum_row'}) { $cols_output = 0; foreach my $field (&get_student_fields_to_show()) { if ($field eq 'username' || $field eq 'fullname' || $field eq 'id') { $excel_sheet->write($maximum_data_row,$cols_output++,'Maximum', $format->{'bold'}); } else { $excel_sheet->write($maximum_data_row,$cols_output++,''); } } # # Add the maximums for each sequence or assessment my %total_cell_translation; my %maximum_cell_translation; foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) { $cols_output=$seq->{'Excel:startcol'}; $total_cell_translation{$seq->{'Excel:scorecell'}} = &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell ($maximum_data_row,$seq->{'Excel:scorecol'}); $maximum_cell_translation{$seq->{'Excel:maxcell'}} = &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell ($maximum_data_row,$seq->{'Excel:maxcol'}); my $weight; my $max = 0; foreach my $resource (@{$seq->{'contents'}}) { next if ($resource->{'type'} ne 'assessment'); foreach my $part (@{$resource->{'parts'}}) { $weight = 1; if ($chosen_output->{'scores'}) { $weight = &Apache::lonnet::EXT ('resource.'.$part.'.weight',$resource->{'symb'}, undef,undef,undef); if (!defined($weight) || ($weight eq '')) { $weight=1; } } if ($chosen_output->{'scores'} && $chosen_output->{'every_problem'}) { $excel_sheet->write($maximum_data_row,$cols_output++, $weight); } $max += $weight; } } # if ($chosen_output->{'sequence_sum'} && $chosen_output->{'every_problem'}) { my %replaceCells; $replaceCells{$seq->{'Excel:startcell'}} = &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell ($maximum_data_row,$seq->{'Excel:startcol'}); $replaceCells{$seq->{'Excel:endcell'}} = &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell ($maximum_data_row,$seq->{'Excel:endcol'}); $excel_sheet->repeat_formula($maximum_data_row,$cols_output++, $seq->{'Excel:sum'},undef, %replaceCells); } elsif ($chosen_output->{'sequence_sum'}) { $excel_sheet->write($maximum_data_row,$cols_output++,$max); } if ($chosen_output->{'sequence_max'}) { $excel_sheet->write($maximum_data_row,$cols_output++,$max); } # } if ($chosen_output->{'grand_total'}) { $excel_sheet->repeat_formula($maximum_data_row,$cols_output++, $total_formula,undef, %total_cell_translation); } if ($chosen_output->{'grand_maximum'}) { $excel_sheet->repeat_formula($maximum_data_row,$cols_output++, $maximum_formula,undef, %total_cell_translation); } } # End of MAXIMUM row output if ($chosen_output->{'maximum_row'}) { $rows_output = $first_data_row; ############################################## # Output summary table, which actually is above the sequence name row. ############################################## if ($chosen_output->{'summary_table'}) { $cols_output = 0; $excel_sheet->write($summary_header_row,$cols_output++, 'Summary Table',$format->{'bold'}); if ($chosen_output->{'maximum_row'}) { $excel_sheet->write($summary_header_row,$cols_output++, 'Maximum',$format->{'bold'}); } $excel_sheet->write($summary_header_row,$cols_output++, 'Average',$format->{'bold'}); $excel_sheet->write($summary_header_row,$cols_output++, 'Median',$format->{'bold'}); $excel_sheet->write($summary_header_row,$cols_output++, 'Std Dev',$format->{'bold'}); my $row = $summary_header_row+1; foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) { $cols_output = 0; $excel_sheet->write($row,$cols_output++, $seq->{'title'}, $format->{'bold'}); if ($chosen_output->{'maximum_row'}) { $excel_sheet->write ($row,$cols_output++, '='. &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell ($maximum_data_row,$seq->{'Excel:scorecol'}) ); } my $range = &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell ($first_data_row,$seq->{'Excel:scorecol'}). ':'. &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell ($first_data_row+$num_students-1,$seq->{'Excel:scorecol'}); $excel_sheet->write($row,$cols_output++, '=AVERAGE('.$range.')'); $excel_sheet->write($row,$cols_output++, '=MEDIAN('.$range.')'); $excel_sheet->write($row,$cols_output++, '=STDEV('.$range.')'); $row++; } } ############################################## # Take care of non-excel initialization ############################################## # # Let the user know what we are doing my $studentcount = scalar(@Apache::lonstatistics::Students); if ($ENV{'form.SelectedStudent'}) { $studentcount = '1'; } if ($studentcount > 1) { $r->print('

'.&mt('Compiling Excel spreadsheet for [_1] students', $studentcount)."

\n"); } else { $r->print('

'. &mt('Compiling Excel spreadsheet for 1 student'). "

\n"); } $r->rflush(); # # Initialize progress window %prog_state=&Apache::lonhtmlcommon::Create_PrgWin ($r,'Excel File Compilation Status', 'Excel File Compilation Progress', $studentcount); # &Apache::lonhtmlcommon::Update_PrgWin($r,\%prog_state, 'Processing first student'); return; } sub excel_outputstudent { my ($r,$student) = @_; return if ($request_aborted); return if (! defined($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 my %total_cell_translation; my %maximum_cell_translation; foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) { $cols_output = $seq->{'Excel:startcol'}; # Keep track of cells to translate in total cell $total_cell_translation{$seq->{'Excel:scorecell'}} = &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell ($rows_output,$seq->{'Excel:scorecol'}); # my ($performance,$performance_length,$score,$seq_max,$rawdata); if ($chosen_output->{'tries'} || $chosen_output->{'correct'}){ ($performance,$performance_length,$score,$seq_max,$rawdata) = &StudentTriesOnSequence($student,\%StudentsData, $seq,'no'); } else { ($performance,$performance_length,$score,$seq_max,$rawdata) = &StudentPerformanceOnSequence($student,\%StudentsData, $seq,'no'); } if ($chosen_output->{'every_problem'}) { if ($chosen_output->{'correct'}) { # only indiciate if each item is correct or not foreach my $value (@$rawdata) { # nonzero means correct $value = 1 if ($value > 0); $excel_sheet->write($rows_output,$cols_output++,$value); } } else { foreach my $value (@$rawdata) { if ($score eq ' ' || !defined($value)) { $cols_output++; } else { $excel_sheet->write($rows_output,$cols_output++, $value); } } } } if ($chosen_output->{'sequence_sum'} && $chosen_output->{'every_problem'}) { # Write a formula for the sum of this sequence my %replaceCells; $replaceCells{$seq->{'Excel:startcell'}} = &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell ($rows_output,$seq->{'Excel:startcol'}); $replaceCells{$seq->{'Excel:endcell'}} = &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell ($rows_output,$seq->{'Excel:endcol'}); # The undef is for the format if (scalar(keys(%replaceCells)) == 1) { $excel_sheet->repeat_formula($rows_output,$cols_output++, $seq->{'Excel:sum'},undef, %replaceCells,%replaceCells); } else { $excel_sheet->repeat_formula($rows_output,$cols_output++, $seq->{'Excel:sum'},undef, %replaceCells); } } elsif ($chosen_output->{'sequence_sum'}) { if ($score eq ' ') { $cols_output++; } else { $excel_sheet->write($rows_output,$cols_output++,$score); } } if ($chosen_output->{'sequence_max'}) { $excel_sheet->write($rows_output,$cols_output++,$seq_max); } } # if ($chosen_output->{'grand_total'}) { $excel_sheet->repeat_formula($rows_output,$cols_output++, $total_formula,undef, %total_cell_translation); } if ($chosen_output->{'grand_maximum'}) { $excel_sheet->repeat_formula($rows_output,$cols_output++, $maximum_formula,undef, %total_cell_translation); } # # Bookkeeping $rows_output++; $cols_output=0; # # Update the progress window &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,'last student'); return; } sub excel_finish { my ($r) = @_; return if ($request_aborted); return if (! defined($excel_sheet)); # # Write the excel file $excel_workbook->close(); 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 excel file $r->print('
'. 'Your Excel spreadsheet.'."\n"); $r->rflush(); return; } } ####################################################### ####################################################### =pod =head2 CSV output routines =item &csv_initialize($r) =item &csv_outputstudent($r,$student) =item &csv_finish($r) =cut ####################################################### ####################################################### { my $outputfile; my $filename; my $request_aborted; my %prog_state; # progress window state sub csv_initialize{ my ($r) = @_; # # Clean up undef($outputfile); undef($filename); undef($request_aborted); undef(%prog_state); # # Deal with unimplemented requests $request_aborted = undef; if ($chosen_output->{'base'} =~ /final table/) { $r->print(<Unable to Complete Request

The Summary Table (Scores) option is not available for non-HTML output.

END $request_aborted = 1; } return if ($request_aborted); # # 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); # # 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 $sequence_row = ''; my $resource_row = undef; foreach my $field (&get_student_fields_to_show()) { $sequence_row .='"",'; $resource_row .= '"'.&Apache::loncommon::csv_translate($field).'",'; } foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) { $sequence_row .= '"'. &Apache::loncommon::csv_translate($seq->{'title'}).'",'; my $count = 0; if ($chosen_output->{'every_problem'}) { foreach my $res (@{$seq->{'contents'}}) { if ($res->{'type'} ne 'assessment' || ! exists($res->{'parts'}) || ref($res->{'parts'}) ne 'ARRAY' || scalar(@{$res->{'parts'}}) < 1) { next; } foreach my $part (@{$res->{'parts'}}) { $resource_row .= '"'. &Apache::loncommon::csv_translate($res->{'title'}. ', Part '.$part ).'",'; $count++; } } } $sequence_row.='"",'x$count; if ($chosen_output->{'sequence_sum'}) { if($chosen_output->{'correct'}) { $resource_row .= '"sum",'; } else { $resource_row .= '"score",'; } } if ($chosen_output->{'sequence_max'}) { $sequence_row.= '"",'; $resource_row .= '"maximum possible",'; } } if ($chosen_output->{'grand_total'}) { $sequence_row.= '"",'; $resource_row.= '"Total",'; } if ($chosen_output->{'grand_maximum'}) { $sequence_row.= '"",'; $resource_row.= '"Maximum",'; } chomp($sequence_row); chomp($resource_row); print $outputfile $sequence_row."\n"; print $outputfile $resource_row."\n"; return; } sub csv_outputstudent { my ($r,$student) = @_; return if ($request_aborted); 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 my $total = 0; my $maximum = 0; foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) { my ($performance,$performance_length,$score,$seq_max,$rawdata); if ($chosen_output->{'tries'}){ ($performance,$performance_length,$score,$seq_max,$rawdata) = &StudentTriesOnSequence($student,\%StudentsData, $seq,'no'); } else { ($performance,$performance_length,$score,$seq_max,$rawdata) = &StudentPerformanceOnSequence($student,\%StudentsData, $seq,'no'); } if ($chosen_output->{'every_problem'}) { if ($chosen_output->{'correct'}) { $score = 0; # Deal with number of parts correct data $Str .= '"'.join('","',( map { if ($_>0) { $score += 1; 1; } else { 0; } } @$rawdata)).'",'; } else { $Str .= '"'.join('","',(@$rawdata)).'",'; } } if ($chosen_output->{'sequence_sum'}) { $Str .= '"'.$score.'",'; } if ($chosen_output->{'sequence_max'}) { $Str .= '"'.$seq_max.'",'; } $total+=$score; $maximum += $seq_max; } if ($chosen_output->{'grand_total'}) { $Str .= '"'.$total.'",'; } if ($chosen_output->{'grand_maximum'}) { $Str .= '"'.$maximum.'",'; } 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 ($r) = @_; return if ($request_aborted); 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('
'. ''.&mt('Your csv file.').''."\n"); $r->rflush(); return; } } ####################################################### ####################################################### =pod =item &StudentTriesOnSequence() Inputs: =over 4 =item $student =item $studentdata Hash ref to all student data =item $seq Hash ref, the sequence we are working on =item $links if defined we will output links to each resource. =back =cut ####################################################### ####################################################### sub StudentTriesOnSequence { my ($student,$studentdata,$seq,$links) = @_; $links = 'no' if (! defined($links)); my $Str = ''; my ($sum,$max) = (0,0); my $performance_length = 0; my @TriesData = (); my $tries; my $hasdata = 0; # flag - true if the student has any data on the sequence foreach my $resource (@{$seq->{'contents'}}) { next if ($resource->{'type'} ne 'assessment'); my $resource_data = $studentdata->{$resource->{'symb'}}; my $value = ''; foreach my $partnum (@{$resource->{'parts'}}) { $tries = undef; $max++; $performance_length++; my $symbol = ' '; # default to space # my $awarded = 0; if (exists($resource_data->{'resource.'.$partnum.'.awarded'})) { $awarded = $resource_data->{'resource.'.$partnum.'.awarded'}; $awarded = 0 if (! $awarded); } # my $status = ''; if (exists($resource_data->{'resource.'.$partnum.'.solved'})) { $status = $resource_data->{'resource.'.$partnum.'.solved'}; } # my $tries = 0; if(exists($resource_data->{'resource.'.$partnum.'.tries'})) { $tries = $resource_data->{'resource.'.$partnum.'.tries'}; $hasdata =1; } # if ($awarded > 0) { # The student has gotten the problem correct to some degree if ($status eq 'excused') { $symbol = 'x'; $max--; } elsif ($status eq 'correct_by_override') { $symbol = '+'; $sum++; } elsif ($tries > 0) { if ($tries > 9) { $symbol = '*'; } else { $symbol = $tries; } $sum++; } else { $symbol = '+'; $sum++; } } else { # The student has the problem incorrect or it is ungraded if ($status eq 'excused') { $symbol = 'x'; $max--; } elsif ($status eq 'incorrect_by_override') { $symbol = '-'; } elsif ($status eq 'ungraded_attempted') { $symbol = '#'; } elsif ($status eq 'incorrect_attempted' || $tries > 0) { $symbol = '.'; } else { # Problem is wrong and has not been attempted. $symbol=' '; } } # if (! defined($tries) || $symbol eq '.') { $tries = $symbol; } push (@TriesData,$tries); # if ( ($links eq 'yes' && $symbol ne ' ') || ($links eq 'all')) { if (length($symbol) > 1) { &Apache::lonnet::logthis('length of symbol "'.$symbol.'" > 1'); } $symbol = ''.$symbol.''; } $value .= $symbol; } $Str .= $value; } if ($seq->{'randompick'}) { $max = $seq->{'randompick'}; } if (! $hasdata && $sum == 0) { $sum = ' '; } return ($Str,$performance_length,$sum,$max,\@TriesData); } ####################################################### ####################################################### =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 $Str = ''; # final result string my ($score,$max) = (0,0); my $performance_length = 0; my $symbol; my @ScoreData = (); my $partscore; my $hasdata = 0; # flag, 0 if there were no submissions on the sequence foreach my $resource (@{$seq->{'contents'}}) { next if ($resource->{'type'} ne 'assessment'); my $resource_data = $studentdata->{$resource->{'symb'}}; foreach my $part (@{$resource->{'parts'}}) { $partscore = undef; my $weight = &Apache::lonnet::EXT('resource.'.$part.'.weight', $resource->{'symb'}, $student->{'domain'}, $student->{'username'}, $student->{'section'}); if (!defined($weight) || ($weight eq '')) { $weight=1; } # $max += $weight; # see the 'excused' branch below... $performance_length++; # one character per part $symbol = ' '; # default to space # my $awarded; if (exists($resource_data->{'resource.'.$part.'.awarded'})) { $awarded = $resource_data->{'resource.'.$part.'.awarded'}; $awarded = 0 if (! $awarded); $hasdata = 1; } # $partscore = $weight*$awarded; if (! defined($awarded)) { $partscore = undef; } $score += $partscore; $symbol = $partscore; if (abs($symbol - sprintf("%.0f",$symbol)) < 0.001) { $symbol = sprintf("%.0f",$symbol); } if (length($symbol) > 1) { $symbol = '*'; } if (exists($resource_data->{'resource.'.$part.'.solved'})) { my $status = $resource_data->{'resource.'.$part.'.solved'}; if ($status eq 'excused') { $symbol = 'x'; $max -= $weight; # Do not count 'excused' problems. } $hasdata = 1; } else { # Unsolved. Did they try? if (exists($resource_data->{'resource.'.$part.'.tries'})){ $symbol = '.'; $hasdata = 1; } else { $symbol = ' '; } } # if (! defined($partscore)) { $partscore = $symbol; } push (@ScoreData,$partscore); # if ( ($links eq 'yes' && $symbol ne ' ') || ($links eq 'all')) { $symbol = ''.$symbol.''; } $Str .= $symbol; } } if (! $hasdata && $score == 0) { $score = ' '; } return ($Str,$performance_length,$score,$max,\@ScoreData); } ####################################################### ####################################################### =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__