# The LearningOnline Network with CAPA
#
# $Id: lonstudentassessment.pm,v 1.54 2003/06/10 15:42:51 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
# (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::loncoursedata;
use Apache::lonnet; # for logging porpoises
use Spreadsheet::WriteExcel;
#######################################################
#######################################################
=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 $data determines what performance data is shown
=item $datadescription A short description of the output data selected.
=item $base 'tries' or 'scores' determines the base of the performance shown
=item $single_student_mode evaluates to true if we are showing only one
student.
=cut
#######################################################
#######################################################
my $show_links;
my $output_mode;
my $data;
my $base;
my $datadescription;
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);
$single_student_mode = 1 if ($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('');
$r->print('');
$r->rflush();
if (! exists($ENV{'form.notfirstrun'}) && ! $single_student_mode) {
$r->print(<
Please make your selections in the boxes above and hit
the button marked "Update Display".
ENDMSG
# $r->print(&OutputDescriptions());
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;
}
#
# 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 .= &CreateLegend();
$Str .= '
'."\n";
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 => '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_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_links => 'no',
# },
{ name => 'CSV',
value => 'csv',
description => 'Output a comma seperated values file suitable for '.
'import into a spreadsheet.',
mode => 'csv',
show_links => 'no',
},
);
sub OutputDescriptions {
my $Str = '';
$Str .= "
Output Modes
\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';
#
# 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 =>'Tries',
base =>'tries',
value => 'tries',
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',
shortdesc => 'Number of Problem Parts completed successfully.',
longdesc => 'The Number of Problem Parts completed successfully.',
},
{ name =>'Parts Correct & Maximums',
base =>'tries',
value => 'parts correct total',
shortdesc => 'Number of Problem Parts completed successfully.',
longdesc => 'The Number of Problem Parts completed successfully and '.
'the maximum possible for each student',
},
{ name => 'Scores',
base => 'scores',
value => 'scores',
shortdesc => 'Score on each Problem Part',
longdesc =>'The students score on each problem part, computed as'.
'the part weight * part awarded',
},
{ name => 'Scores Sum',
base => 'scores',
value => 'sum only',
shortdesc => 'Sum of Scores on each Problem Part',
longdesc =>'The total of the scores of the student on each problem'.
' part in the sequences or folders selected.',
},
{ name => 'Scores Sum & Maximums',
base => 'scores',
value => 'sum and total',
shortdesc => 'Total Score and Maximum Possible for each '.
'Sequence or Folder',
longdesc => 'The total of the scores of the student on each problem'.
' and the maximum possible for that student on each Sequence or '.
' Folder.',
},
{ name => 'Summary Table (Scores)',
base => 'scores',
value => 'final table scores',
shortdesc => 'Summary of Scores',
longdesc => '',
},
{ name => 'Summary Table (Parts)',
base => 'tries',
value => 'final table parts',
shortdesc => 'Summary of Parts Correct',
longdesc => '',
}
);
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};
}
}
#
$data = 'scores';
foreach my $option (@OutputDataOptions) {
if ($option->{'value'} eq $selected) {
$data = $option->{'value'};
$base = $option->{'base'};
$datadescription = $option->{'shortdesc'};
}
}
#
# 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 $nodata_count; # The number of students for which there is no data
my %prog_state; # progress state used by loncommon PrgWin routines
sub html_initialize {
my ($r) = @_;
#
$padding = ' 'x3;
$count = 0;
$nodata_count = 0;
#
$r->print("
");
#
# Set up progress window for 'final table' display only
if ($data =~ /^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 = "
\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 (&Apache::lonstatistics::Sequences_with_Assess()){
my $title = $sequence->{'title'};
my $base = $sequence->{'base_width'};
my $width = $sequence->{'width'};
$Str .= $title.' 'x($width-$base).$padding;
}
$Str .= "total
\n";
$Str .= "
";
#
# Check for suppression of output
if ($data =~ /^final table/) {
$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) {
$nodata_count++;
return if ($data =~ /^final table/);
$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 ($base eq 'tries') {
($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 $ratio = sprintf("%3d",$score).'/'.sprintf("%3d",$seq_max);
#
if ($data eq 'sum and total' || $data eq 'parts correct total') {
$performance = $ratio;
$performance .= ' 'x($seq->{'width'}-length($ratio));
} elsif ($data eq 'sum only' || $data eq 'parts correct') {
$performance = $score;
$performance .= ' 'x($seq->{'width'}-length($score));
} else {
# Pad with extra spaces
$performance .= ' 'x($seq->{'width'}-$performance_length-
length($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'} += $seq_stats->{'score'};
if ($Statistics->{$symb}->{'max'} < $seq_stats->{'max'}) {
$Statistics->{$symb}->{'max'} = $seq_stats->{'max'};
}
$score += $seq_stats->{'score'};
$max += $seq_stats->{'max'};
}
$Str .= ' '.' 'x(length($max)-length($score)).$score.'/'.$max;
$Str .= " \n";
#
# Check for suppressed output and update the progress window if so...
if ($data =~ /^final table/) {
$Str = '';
&Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
'last student');
}
#
$r->print($Str);
#
$r->rflush();
return;
}
sub html_finish {
my ($r) = @_;
#
# Check for suppressed output and close the progress window if so
if ($data =~ /^final table/) {
&Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
} else {
$r->print("
\n");
}
if ($single_student_mode) {
$r->print(&SingleStudentTotal());
} else {
$r->print(&StudentAverageTotal());
}
$r->rflush();
return;
}
sub StudentAverageTotal {
my $Str = "
Summary Tables
\n";
my $num_students = scalar(@Apache::lonstatistics::Students);
my $total_ave = 0;
my $total_max = 0;
$Str .= '
'."\n";
}
$total_ave = int(100*$total_ave)/100; # only two digit
$Str .= "
\n";
$Str .= '
'."\n";
$Str .= '
Number of Students
Average
'.
"
Maximum
\n";
$Str .= '
'.($num_students-$nodata_count).'
'.
'
'.$total_ave.'
'.$total_max.'
';
$Str .= "
\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 .=
"
Sequence or Folder
Score
Maximum
\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 .= '
");
#
# 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 / $max_size);
}
# if ($data eq ) {
# 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 ");
$r->print("Number of students: ".$num_students." ");
$r->print("Number of fields per student: ".$fields_per_student." ");
$r->print("Total number of fields: ".($fields_per_student*$num_students).
" ");
$r->print("Bytes per field: ".$bytes_per_field." (estimated)"." ");
$r->print("Estimated size: ".$size_estimate." bytes ");
$r->print("Number of workbooks: ".$num_workbooks." ");
$r->rflush();
return;
}
sub multi_sheet_excel_outputstudent {
my ($r,$student) = @_;
}
sub multi_sheet_excel_finish {
my ($r) = @_;
}
}
#######################################################
#######################################################
=pod
=head2 EXCEL subroutines
=item &excel_initialize($r)
=item &excel_outputstudent($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 $request_aborted;
sub excel_initialize {
my ($r) = @_;
#
$request_aborted = undef;
my $total_columns = scalar(&get_student_fields_to_show());
foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
# Add 2 because we need a 'sum' and 'total' column for each
$total_columns += $seq->{'num_assess_parts'}+2;
}
if ($data 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
$request_aborted = 1;
}
if ($data 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
summary data (Scores Sum or Scores Sum & Totals).
END
$request_aborted = 1;
}
if ($data =~ /^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);
#
$filename = '/prtspool/'.
$ENV{'user.name'}.'_'.$ENV{'user.domain'}.'_'.
time.'_'.rand(1000000000).'.xls';
#
$excel_workbook = undef;
$excel_sheet = undef;
#
$rows_output = 0;
$cols_output = 0;
#
# 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
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));
#
$cols_output = 0;
$excel_sheet->write($rows_output++,$cols_output++,$datadescription);
#
if ($data eq 'tries' || $data eq 'scores') {
$rows_output++;
}
#
# Add the student headers
$cols_output = 0;
foreach my $field (&get_student_fields_to_show()) {
$excel_sheet->write($rows_output,$cols_output++,$field);
}
my $row_offset = 0;
if ($data eq 'tries' || $data eq 'scores') {
$row_offset = -1;
}
#
# Add the remaining column headers
foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
$excel_sheet->write($rows_output+$row_offset,
$cols_output,$seq->{'title'});
if ($data eq 'tries' || $data eq 'scores') {
foreach my $res (@{$seq->{'contents'}}) {
next if ($res->{'type'} ne 'assessment');
if (scalar(@{$res->{'parts'}}) > 1) {
foreach my $part (@{$res->{'parts'}}) {
$excel_sheet->write($rows_output,
$cols_output++,
$res->{'title'}.' part '.$part);
}
} else {
$excel_sheet->write($rows_output,
$cols_output++,
$res->{'title'});
}
}
$excel_sheet->write($rows_output,$cols_output++,'score');
$excel_sheet->write($rows_output,$cols_output++,'maximum');
} elsif ($data eq 'sum and total' || $data eq 'parts correct total') {
$excel_sheet->write($rows_output+1,$cols_output,'score');
$excel_sheet->write($rows_output+1,$cols_output+1,'maximum');
$cols_output += 2;
} else {
$cols_output++;
}
}
#
# Bookkeeping
if ($data eq 'sum and total' || $data eq 'parts correct total') {
$rows_output += 2;
} else {
$rows_output += 1;
}
#
# Output a row for MAX
$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 maximums for each sequence or assessment
foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
my $weight;
my $max = 0;
foreach my $resource (@{$seq->{'contents'}}) {
next if ($resource->{'type'} ne 'assessment');
foreach my $part (@{$resource->{'parts'}}) {
$weight = 1;
if ($base eq 'scores') {
$weight = &Apache::lonnet::EXT
('resource.'.$part.'.weight',$resource->{'symb'},
undef,undef,undef);
if (!defined($weight) || ($weight eq '')) {
$weight=1;
}
}
if ($data eq 'scores') {
$excel_sheet->write($rows_output,$cols_output++,$weight);
} elsif ($data eq 'tries') {
$excel_sheet->write($rows_output,$cols_output++,'');
}
$max += $weight;
}
}
if (! ($data eq 'sum only' || $data eq 'parts correct')) {
$excel_sheet->write($rows_output,$cols_output++,'');
}
$excel_sheet->write($rows_output,$cols_output++,$max);
}
$rows_output++;
#
# 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");
$r->rflush();
#
# Initialize progress window
%prog_state=&Apache::lonhtmlcommon::Create_PrgWin
($r,'Excel File Compilation Status',
'Excel File Compilation Progress', $studentcount);
#
return;
}
sub excel_outputstudent {
my ($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
foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
my ($performance,$performance_length,$score,$seq_max,$rawdata);
if ($base eq 'tries') {
($performance,$performance_length,$score,$seq_max,$rawdata) =
&StudentTriesOnSequence($student,\%StudentsData,
$seq,'no');
} else {
($performance,$performance_length,$score,$seq_max,$rawdata) =
&StudentPerformanceOnSequence($student,\%StudentsData,
$seq,'no');
}
if ($data eq 'tries' || $data eq 'scores') {
foreach my $value (@$rawdata) {
$excel_sheet->write($rows_output,$cols_output++,$value);
}
$excel_sheet->write($rows_output,$cols_output++,$score);
$excel_sheet->write($rows_output,$cols_output++,$seq_max);
} elsif ($data eq 'sum and total' || $data eq 'sum only' ||
$data eq 'parts correct' || $data eq 'parts correct total') {
$excel_sheet->write($rows_output,$cols_output++,$score);
}
if ($data eq 'sum and total' || $data eq 'parts correct total') {
$excel_sheet->write($rows_output,$cols_output++,$seq_max);
}
}
#
# 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
$filename = undef;
$outputfile = undef;
undef(%prog_state);
#
# Deal with unimplemented requests
$request_aborted = undef;
if ($data =~ /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);
#
# 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 $field (&get_student_fields_to_show()) {
if ($data eq 'sum only') {
$Str .= '"'.&Apache::loncommon::csv_translate($field).'",';
} elsif ($data eq 'sum and total' || $data eq 'parts correct total') {
$Str .= '"",'; # first row empty on the student fields
$Str2 .= '"'.&Apache::loncommon::csv_translate($field).'",';
} elsif ($data eq 'scores' || $data eq 'tries' ||
$data eq 'parts correct') {
$Str .= '"",';
$Str2 .= '"'.&Apache::loncommon::csv_translate($field).'",';
}
}
foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
if ($data eq 'sum only' || $data eq 'parts correct') {
$Str .= '"'.&Apache::loncommon::csv_translate($seq->{'title'}).
'",';
} elsif ($data eq 'sum and total' || $data eq 'parts correct total') {
$Str .= '"'.&Apache::loncommon::csv_translate($seq->{'title'}).
'","",';
$Str2 .= '"score","total possible",';
} elsif ($data eq 'scores' || $data eq 'tries') {
$Str .= '"'.&Apache::loncommon::csv_translate($seq->{'title'}).
'",';
$Str .= '"",'x($seq->{'num_assess_parts'}-1+2);
foreach my $res (@{$seq->{'contents'}}) {
next if ($res->{'type'} ne 'assessment');
foreach my $part (@{$res->{'parts'}}) {
$Str2 .= '"'.&Apache::loncommon::csv_translate($res->{'title'}.', Part '.$part).'",';
}
}
$Str2 .= '"score","total possible",';
}
}
chop($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,$student) = @_;
return if ($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
foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
my ($performance,$performance_length,$score,$seq_max,$rawdata);
if ($base eq 'tries') {
($performance,$performance_length,$score,$seq_max,$rawdata) =
&StudentTriesOnSequence($student,\%StudentsData,
$seq,'no');
} else {
($performance,$performance_length,$score,$seq_max,$rawdata) =
&StudentPerformanceOnSequence($student,\%StudentsData,
$seq,'no');
}
if ($data eq 'sum only' || $data eq 'parts correct') {
$Str .= '"'.$score.'",';
} elsif ($data eq 'sum and total' || $data eq 'parts correct total') {
$Str .= '"'.$score.'","'.$seq_max.'",';
} elsif ($data eq 'scores' || $data eq 'tries') {
$Str .= '"'.join('","',(@$rawdata,$score,$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 ($r) = @_;
return if ($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(' '.
'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;
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 $symbol = ' '; # default to space
#
if (exists($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'})){
$tries = $resource_data->{'resource.'.$partnum.'.tries'};
if ($tries > 9) {
$symbol = '*';
} elsif ($tries > 0) {
$symbol = $tries;
} else {
$symbol = ' ';
}
$sum++;
} elsif (exists($resource_data->{'resource.'.
$partnum.'.tries'})){
$symbol = '.';
} else {
$symbol = ' ';
}
} else {
# Unsolved. Did they try?
if (exists($resource_data->{'resource.'.$partnum.'.tries'})){
$symbol = '.';
} else {
$symbol = ' ';
}
}
#
if (! defined($tries)) {
$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 = $seq->{'randompick'};
}
return ($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;
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 $awarded = 0;
if (exists($resource_data->{'resource.'.$part.'.awarded'})) {
$awarded = $resource_data->{'resource.'.$part.'.awarded'};
}
#
$partscore = $weight*$awarded;
$score += $partscore;
$symbol = $weight;
if (length($symbol) > 1) {
$symbol = '*';
}
if (exists($resource_data->{'resource.'.$part.'.solved'})) {
my $status = $resource_data->{'resource.'.$part.'.solved'};
if ($status eq 'excused') {
$symbol = 'x';
$max -= $weight; # Do not count 'excused' problems.
}
} else {
# Unsolved. Did they try?
if (exists($resource_data->{'resource.'.$part.'.tries'})){
$symbol = '.';
} else {
$symbol = ' ';
}
}
#
if ( ($links eq 'yes' && $symbol ne ' ') || ($links eq 'all')) {
$symbol = ''.$symbol.'';
}
if (! defined($partscore)) {
$partscore = $symbol;
}
push (@ScoreData,$partscore);
}
$Str .= $symbol;
}
return ($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".
"