# The LearningOnline Network with CAPA
#
# $Id: lonproblemanalysis.pm,v 1.35 2003/10/14 14:23:14 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/
#
package Apache::lonproblemanalysis;
use strict;
use Apache::lonnet();
use Apache::loncommon();
use Apache::lonhtmlcommon();
use Apache::loncoursedata();
use Apache::lonstatistics;
use Apache::lonlocal;
sub BuildProblemAnalysisPage {
my ($r,$c)=@_;
$r->print('<h2>'.&mt('Option Response Problem Analysis').'</h2>');
$r->print(&CreateInterface());
#
my @Students = @Apache::lonstatistics::Students;
#
if (exists($ENV{'form.updatecaches'}) ||
(exists($ENV{'form.firstanalysis'}) &&
$ENV{'form.firstanalysis'} ne 'no')) {
&Apache::lonstatistics::Gather_Full_Student_Data($r);
}
if (! exists($ENV{'form.firstanalysis'})) {
$r->print('<input type="hidden" name="firstanalysis" value="yes" />');
} else {
$r->print('<input type="hidden" name="firstanalysis" value="no" />');
}
if (exists($ENV{'form.problemchoice'}) &&
! exists($ENV{'form.SelectAnother'})) {
$r->print('<input type="submit" name="ProblemAnalysis" value="'.
&mt('Analyze Problem Again').'" />');
$r->print(' 'x5);
$r->print('<input type="submit" name="ClearCache" value="'.
&mt('Clear Caches').'" />');
$r->print(' 'x5);
$r->print('<input type="submit" name="updatecaches" value="'.
&mt('Update Student Data').'" />');
$r->print(' 'x5);
$r->print('<input type="hidden" name="problemchoice" value="'.
$ENV{'form.problemchoice'}.'" />');
$r->print('<input type="submit" name="SelectAnother" value="'.
&mt('Choose a different resource').'" />');
$r->print(' 'x5);
#
$r->print('<hr />');
#
my ($symb,$part,$resid) = &get_problem_symb(
&Apache::lonnet::unescape($ENV{'form.problemchoice'})
);
#
my $resource = &get_resource_from_symb($symb);
if (defined($resource)) {
my %Data = &get_problem_data($resource->{'src'});
my $ORdata = $Data{$part.'.'.$resid};
##
## Render the problem
my $base;
($base,undef) = ($resource->{'src'} =~ m|(.*/)[^/]*$|);
$base = "http://".$ENV{'SERVER_NAME'}.$base;
my $rendered_problem =
&Apache::lonnet::ssi_body($resource->{'src'});
$rendered_problem =~ s/<\s*form\s*/<nop /g;
$rendered_problem =~ s|(<\s*/form\s*>)|<\/nop>|g;
$r->print('<table bgcolor="ffffff"><tr><td>'.
'<base href="'.$base.'" />'.
$rendered_problem.
'</td></tr></table>');
##
## Analyze the problem
my $PerformanceData =
&Apache::loncoursedata::get_optionresponse_data
(\@Students,$symb,$resid);
if (defined($PerformanceData) &&
ref($PerformanceData) eq 'ARRAY') {
if ($ENV{'form.AnalyzeBy'} eq 'Tries') {
my $analysis_html = &tries_analysis($PerformanceData,
$ORdata);
$r->print($analysis_html);
} elsif ($ENV{'form.AnalyzeBy'} eq 'Time') {
my $analysis_html = &time_analysis($PerformanceData,
$ORdata);
$r->print($analysis_html);
} else {
$r->print('<h2>'.
&mt('The analysis you have selected is '.
'not supported at this time').
'</h2>');
}
} else {
$r->print('<h2>'.
&mt('There is no student data for this problem.').
'</h2>');
}
} else {
$r->print('resource is undefined');
}
$r->print('<hr />');
} else {
$r->print('<input type="submit" name="ProblemAnalysis" value="'.
&mt('Analyze Problem').'" />');
$r->print(' 'x5);
$r->print('<h3>'.&mt('Please select a problem to analyze').'</h3>');
$r->print(&OptionResponseProblemSelector());
}
}
#########################################################
#########################################################
##
## Misc interface routines use by analysis code
##
#########################################################
#########################################################
sub build_foil_index {
my ($ORdata) = @_;
my @Foils = sort(keys(%{$ORdata->{'Foiltext'}}));
my %Row_Label;
foreach my $foilid (@Foils) {
my $value = $ORdata->{'Foiltext'}->{$foilid};
$Row_Label{$foilid} = $ORdata->{'Foiltext'}->{$foilid};
}
#
# Build up the table of row labels.
my $table = '<table border="1" >'."\n";
$table .= '<tr><th>'.&mt('Foil Number').'</th>'.
'<th>'.&mt('Foil Text')."</th></tr>\n";
my $index = 1;
foreach my $foilid (@Foils) {
$table .= '<tr><td>'.$index.'</td>'.
'<td>'.$Row_Label{$foilid}."</td></tr>\n";
} continue {
$index++;
}
$table .= "</table>\n";
return ($table,@Foils);
}
#########################################################
#########################################################
##
## Tries Analysis
##
#########################################################
#########################################################
sub tries_analysis {
my ($PerformanceData,$ORdata) = @_;
my $mintries = 1;
my $maxtries = $ENV{'form.NumPlots'};
my %ResponseData = &analyze_option_data_by_tries($PerformanceData,
$mintries,$maxtries);
my ($table,@Foils) = &build_foil_index($ORdata);
#
# Compute the data neccessary to make the plots
my @PlotData;
my @CumulativePlotData;
foreach my $foilid (@Foils) {
for (my $i=$mintries;$i<=$maxtries;$i++) {
#
# Gather the per-attempt data
push (@{$PlotData[$i]->{'good'}},
$ResponseData{$foilid}->[$i]->{'percent_corr'});
push (@{$PlotData[$i]->{'bad'}},
100-$ResponseData{$foilid}->[$i]->{'percent_corr'});
#
# Someday we may need the cumulative data and I think
# this is a neat way of computing it as we go along.
push (@{$CumulativePlotData[$i]->{'good'}},
$CumulativePlotData[-1]->{'good'}+
$ResponseData{$foilid}->[$i]->{'correct'});
push (@{$CumulativePlotData[$i]->{'bad'}},
$CumulativePlotData[-1]->{'bad'}+
$ResponseData{$foilid}->[$i]->{'incorrect'});
}
}
#
# Build a table for the plots
$table .= "<table>\n";
my @Plots;
for (my $i=$mintries;$i<=$maxtries;$i++) {
my $minstu = $ResponseData{$Foils[0]}->[$i]->{'total'};
my $maxstu = $ResponseData{$Foils[0]}->[$i]->{'total'};
foreach my $foilid (@Foils) {
if ($minstu > $ResponseData{$foilid}->[$i]->{'total'}) {
$minstu = $ResponseData{$foilid}->[$i]->{'total'};
}
if ($maxstu < $ResponseData{$foilid}->[$i]->{'total'}) {
$maxstu = $ResponseData{$foilid}->[$i]->{'total'};
}
}
$maxstu = 0 if (! $maxstu);
$minstu = 0 if (! $minstu);
my $title;
if ($maxstu == $minstu) {
$title = 'Attempt '.$i.', '.$maxstu.' students';
} else {
$title = 'Attempt '.$i.', '.$minstu.'-'.$maxstu.' students';
}
my $graphlink = &Apache::loncommon::DrawGraph($title,
'Foil Number',
'Percent Correct',
100,
$PlotData[$i]->{'good'},
$PlotData[$i]->{'bad'});
push(@Plots,$graphlink);
}
#
# Should this be something the user can set? Too many dialogs!
my $plots_per_row = 2;
while (my $plotlink = shift(@Plots)) {
$table .= '<tr><td>'.$plotlink.'</td>';
for (my $i=1;$i<$plots_per_row;$i++) {
if ($plotlink = shift(@Plots)) {
$table .= '<td>'.$plotlink.'</td>';
} else {
$table .= '<td></td>';
}
}
$table .= "</tr>\n";
}
$table .= "</table>\n";
return ($table);
}
sub analyze_option_data_by_tries {
my ($PerformanceData,$mintries,$maxtries) = @_;
my %Trydata;
$mintries = 1 if (! defined($mintries) || $mintries < 1);
$maxtries = $mintries if (! defined($maxtries) || $maxtries < $mintries);
foreach my $row (@$PerformanceData) {
next if (! defined($row));
my ($grading,$submission,$time,$tries) = @$row;
my @Foilgrades = split('&',$grading);
my @Foilsubs = split('&',$submission);
for (my $numtries = 1; $numtries <= $maxtries; $numtries++) {
if ($tries == $numtries) {
foreach my $foilgrade (@Foilgrades) {
my ($foilid,$correct) = split('=',$foilgrade);
if ($correct) {
$Trydata{$foilid}->[$numtries]->{'correct'}++;
} else {
$Trydata{$foilid}->[$numtries]->{'incorrect'}++;
}
}
}
}
}
foreach my $foilid (keys(%Trydata)) {
foreach my $tryhash (@{$Trydata{$foilid}}) {
next if ((! exists($tryhash->{'correct'}) &&
! exists($tryhash->{'incorrect'})) ||
($tryhash->{'correct'} < 1 &&
$tryhash->{'incorrect'} < 1));
$tryhash->{'total'} = $tryhash->{'correct'} +
$tryhash->{'incorrect'};
$tryhash->{'percent_corr'} = 100 *
($tryhash->{'correct'} /
($tryhash->{'correct'} + $tryhash->{'incorrect'})
);
}
}
return %Trydata;
}
#########################################################
#########################################################
##
## Time Analysis
##
#########################################################
#########################################################
sub time_analysis {
my ($PerformanceData,$ORdata) = @_;
my $num_plots = $ENV{'form.NumPlots'};
my ($table,@Foils) = &build_foil_index($ORdata);
my $num_data = scalar(@$PerformanceData)-1;
my $percent = sprintf('%2f',100/$num_plots);
for (my $i=0;$i<$num_plots;$i++) {
my $starttime = &Apache::lonhtmlcommon::get_date_from_form
('startdate_'.$i);
my $endtime = &Apache::lonhtmlcommon::get_date_from_form
('enddate_'.$i);
my ($begin_index,$end_index,$plottitle,$plothtml,$data);
if (! defined($starttime) || ! defined($endtime)) {
$begin_index = $i*int($num_data/$num_plots);
$end_index = ($i+1)*int($num_data/$num_plots);
my $lownum = sprintf('%2.1f',$i*$percent);
$lownum =~ s/(\.0)$//;
my $highnum = sprintf('%2.1f',($i+1)*$percent);
$highnum =~ s/(\.0)$//;
$plottitle = $lownum.'% to '.$highnum.'% of submissions';
} else {
my $j;
while (++$j < scalar(@$PerformanceData)) {
last if ($PerformanceData->[$j]->[2] > $starttime);
}
$begin_index = $j;
while (++$j < scalar(@$PerformanceData)) {
last if ($PerformanceData->[$j]->[2] > $endtime);
}
$end_index = $j;
$plottitle = 'Tries plot '.($i+1);
}
($plothtml,$starttime,$endtime,$data) =
&analyze_option_data_by_time($PerformanceData,
$begin_index,$end_index,
$plottitle,
@Foils);
my $startdateform = &Apache::lonhtmlcommon::date_setter
('Statistics','startdate_'.$i,$starttime);
my $enddateform = &Apache::lonhtmlcommon::date_setter
('Statistics','enddate_'.$i,$endtime);
$plothtml.= "<br />\n".
"<b>Start Time</b>: "." ".$startdateform."<br />\n".
"<b>End Time</b> : "." ".$enddateform."<br />\n";
$table.=$plothtml;
}
return $table;
}
sub analyze_option_data_by_time {
my ($PerformanceData,$begin_index,$end_index,$description,@Foils) = @_;
my %TimeData;
#
# Get the start and end times for this segment of the plot
my $starttime = $PerformanceData->[$begin_index]->[2];
my $endtime = $PerformanceData->[$end_index ]->[2];
#
# Compute the number getting the foils correct or incorrects
for (my $i=$begin_index;$i<=$end_index;$i++) {
my $row = $PerformanceData->[$i];
next if (! defined($row));
my ($grading,$submission,$time,$tries) = @$row;
my @Foilgrades = split('&',$grading);
my @Foilsubs = split('&',$submission);
foreach my $foilgrade (@Foilgrades) {
my ($foilid,$correct) = split('=',$foilgrade);
if ($correct) {
$TimeData{$foilid}->{'correct'}++;
} else {
$TimeData{$foilid}->{'incorrect'}++;
}
}
}
#
# Compute the total and percent correct
my @Plotdata1;
my @Plotdata2;
foreach my $foilid (@Foils) {
if (! exists($TimeData{$foilid}->{'correct'})) {
$TimeData{$foilid}->{'correct'} = 0;
}
if (! exists($TimeData{$foilid}->{'incorrect'})) {
$TimeData{$foilid}->{'incorrect'} = 0;
}
$TimeData{$foilid}->{'total'} = $TimeData{$foilid}->{'correct'} +
$TimeData{$foilid}->{'incorrect'};
$TimeData{$foilid}->{'percent_corr'} = 100 *
$TimeData{$foilid}->{'correct'} /
$TimeData{$foilid}->{'total'};
push (@Plotdata1, $TimeData{$foilid}->{'percent_corr'});
push (@Plotdata2,100-$TimeData{$foilid}->{'percent_corr'});
}
#
# Create the plot
my $graphlink = &Apache::loncommon::DrawGraph
($description,#'Time Interval Analysis',
'Foil Number',
'Percent Correct / Incorrect',
100,
\@Plotdata1,\@Plotdata2);
#
return ($graphlink,$starttime,$endtime,\%TimeData);
}
#########################################################
#########################################################
##
## Interface
##
#########################################################
#########################################################
sub CreateInterface {
##
## Environment variable initialization
if (! exists$ENV{'form.AnalyzeBy'}) {
$ENV{'form.AnalyzeBy'} = 'Tries';
}
##
## Build the menu
my $Str = '';
$Str .= '<table cellspacing="5">'."\n";
$Str .= '<tr>';
$Str .= '<td align="center"><b>'.&mt('Sections').'</b></td>';
$Str .= '<td align="center"><b>'.&mt('Enrollment Status').'</b></td>';
# $Str .= '<td align="center"><b>'.&mt('Sequences and Folders').'</b></td>';
$Str .= '<td align="center"> </td>';
$Str .= '</tr>'."\n";
##
##
$Str .= '<tr><td align="center">'."\n";
$Str .= &Apache::lonstatistics::SectionSelect('Section','multiple',5);
$Str .= '</td>';
#
$Str .= '<td align="center">';
$Str .= &Apache::lonhtmlcommon::StatusOptions(undef,undef,5);
$Str .= '</td>';
#
# $Str .= '<td align="center">';
my $only_seq_with_assessments = sub {
my $s=shift;
if ($s->{'num_assess'} < 1) {
return 0;
} else {
return 1;
}
};
&Apache::lonstatistics::MapSelect('Maps','multiple,all',5,
$only_seq_with_assessments);
# $Str .= '</td>';
#
$Str .= '<td>';
$Str .= '<nobr>'.&mt('Analyze By ');
$Str .='<select name="AnalyzeBy" >';
#
$Str .= '<option value="Tries" ';
if (! exists($ENV{'form.AnalyzeBy'}) || $ENV{'form.AnalyzeBy'} eq 'Tries'){
# Default to Tries
$Str .= ' selected ';
}
$Str .= '>'.&mt('Tries').'</option>';
#
$Str .= '<option value="Time" ';
$Str .= ' selected ' if ($ENV{'form.AnalyzeBy'} eq 'Time');
$Str .= '>'.&mt('Time').'</option>';
$Str .= '</select></nobr><br />';
#
$Str .= '<br /><nobr>'.&mt('Number of Plots:');
$Str .= '<select name="NumPlots">';
if (! exists($ENV{'form.NumPlots'})
|| $ENV{'form.NumPlots'} < 1
|| $ENV{'form.NumPlots'} > 20) {
$ENV{'form.NumPlots'} = 5;
}
foreach my $i (1,2,3,4,5,6,7,8,10,15,20) {
$Str .= '<option value="'.$i.'" ';
if ($ENV{'form.NumPlots'} == $i) { $Str.=' selected '; }
$Str .= '>'.$i.'</option>';
}
$Str .= '</select></nobr>';
$Str .= '</td>';
#
$Str .= '</tr>'."\n";
$Str .= '</table>'."\n";
return ($Str);
}
sub OptionResponseProblemSelector {
my $Str;
$Str = "\n<table>\n";
foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
next if ($seq->{'num_assess'}<1);
my $seq_str = '';
foreach my $res (@{$seq->{'contents'}}) {
# &Apache::lonnet::logthis('checking '.$res->{'title'});
next if ($res->{'type'} ne 'assessment');
foreach my $part (@{$res->{'parts'}}) {
my $partdata = $res->{'partdata'}->{$part};
if (! exists($partdata->{'option'}) ||
$partdata->{'option'} == 0) {
next;
}
for (my $i=0;$i<scalar(@{$partdata->{'ResponseTypes'}});$i++){
my $respid = $partdata->{'ResponseIds'}->[$i];
my $resptype = $partdata->{'ResponseTypes'}->[$i];
if ($resptype eq 'option') {
my $value = &Apache::lonnet::escape($res->{'symb'}.':'.$part.':'.$respid);
my $checked = '';
if ($ENV{'form.problemchoice'} eq $value) {
$checked = 'checked ';
}
$seq_str .= '<tr><td>'.
'<input type="radio" name="problemchoice" value="'.$value.'" '.$checked.'/>'.
'</td><td>'.
'<a href="'.$res->{'src'}.'">'.$res->{'title'}.'</a> ';
if ($partdata->{'option'} > 1) {
$seq_str .= &mt('response').' '.$respid;
}
$seq_str .= "</td></tr>\n";
}
}
}
}
if ($seq_str ne '') {
$Str .= '<tr><td> </td><td><b>'.$seq->{'title'}.'</b></td>'.
"</tr>\n".$seq_str;
}
}
$Str .= "</table>\n";
return $Str;
}
#########################################################
#########################################################
##
## Misc functions
##
#########################################################
#########################################################
sub get_problem_symb {
my $problemstring = shift();
my ($symb,$partid,$resid) = ($problemstring=~ /^(.*):([^:]*):([^:]*)$/);
return ($symb,$partid,$resid);
}
sub get_resource_from_symb {
my ($symb) = @_;
foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
foreach my $res (@{$seq->{'contents'}}) {
if ($res->{'symb'} eq $symb) {
return $res;
}
}
}
return undef;
}
sub get_problem_data {
my ($url) = @_;
# my $Answ=&Apache::lonnet::ssi($URI,('grade_target' => 'analyze',
# 'grade_username' => $sname,
# 'grade_domain' => $sdom,
# 'grade_courseid' => $cid,
# 'grade_symb' => $symb));
my $Answ=&Apache::lonnet::ssi($url,('grade_target' => 'analyze'));
(my $garbage,$Answ)=split(/_HASH_REF__/,$Answ,2);
my %Answer;
%Answer=&Apache::lonnet::str2hash($Answ);
# &Apache::lonnet::logthis('keys of %Answer = '.join(', ',(keys(%Answer))));
# &Apache::lonnet::logthis('$Answer{parts} = '.
# join(', ',@{$Answer{'parts'}}));
my %Partdata;
foreach my $part (@{$Answer{'parts'}}) {
while (my($key,$value) = each(%Answer)) {
next if ($key !~ /^$part/);
$key =~ s/^$part\.//;
if (ref($value) eq 'ARRAY') {
if ($key eq 'options') {
$Partdata{$part}->{'Options'}=$value;
} elsif ($key eq 'concepts') {
$Partdata{$part}->{'Concepts'}=$value;
} elsif ($key =~ /^concept\.(.*)$/) {
my $concept = $1;
foreach my $foil (@$value) {
$Partdata{$part}->{$foil}->{'Concept'}=$concept;
}
}
# &Apache::lonnet::logthis($part.' '.$key.' (array) = '.
# join(', ',@$value));
} else {
$value =~ s/^\s*//g;
$value =~ s/\s*$//g;
if ($key=~ /^foil\.text\.(.*)$/) {
my $foil = $1;
$Partdata{$part}->{'Foiltext'}->{$foil}=$value;
} elsif ($key =~ /^foil\.value\.(.*)$/) {
my $foil = $1;
$Partdata{$part}->{'FoilValues'}->{$foil}=$value;
}
# &Apache::lonnet::logthis($part.' '.$key.' = '.$value);
}
}
}
# my $parts='';
# foreach my $elm (@{$Answer{"parts"}}) {
# $parts.="$elm,";
# }
# chop($parts);
# my $conc='';
# foreach my $elm (@{$Answer{"$parts.concepts"}}) {
# $conc.="$elm@";
# }
# chop($conc);
#
# @Concepts=split(/\@/,$conc);
# foreach my $concept (@{$Answer{"$parts.concepts"}}) {
# foreach my $foil (@{$Answer{"$parts.concept.$concept"}}) {
# $foil_to_concept{$foil} = $concept;
# #$ConceptData{$foil} = $Answer{"$parts.foil.value.$foil"};
# }
# }
# return $symb;
return %Partdata;
}
1;
__END__
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/back.gif){kind=icon}
Return to lonproblemanalysis.pm CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [LON-CAPA] / loncom / interface / statistics