# The LearningOnline Network with CAPA
#
# $Id: lonproblemanalysis.pm,v 1.26 2003/10/07 16:07:39 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>');
$r->print(&CreateInterface());
if (exists($ENV{'form.problemchoice'})) {
$r->print('<hr />');
&Apache::lonstatistics::Gather_Full_Student_Data($r);
#
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/<form /<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 $PerformanceData =
&Apache::loncoursedata::get_optionresponse_data
(undef,$symb,$resid);
if (defined($PerformanceData) &&
ref($PerformanceData) eq 'ARRAY') {
my $analysis_html = &DoTriesAnalysis($PerformanceData,$ORdata);
$r->print($analysis_html);
} 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('<h3>No Problem Selected</h3>');
}
# Okay, they asked for data, so make sure we get the latest data.
$r->print(&OptionResponseProblemSelector());
}
sub DoTriesAnalysis {
my ($PerformanceData,$ORdata) = @_;
my $mintries = 1;
my $maxtries = 3;
my %ResponseData = &analyze_option_data_by_tries($PerformanceData,
$mintries,$maxtries);
my @Foils = sort(keys(%ResponseData));
my %Row_Label;
foreach my $foilid (@Foils) {
my $value = $ORdata->{'Foiltext'}->{$foilid};
# &Apache::lonnet::logthis('row label '.$foilid.' = '.$value);
$Row_Label{$foilid} = $ORdata->{'Foiltext'}->{$foilid};
}
my @Rows;
$Rows[0] = ['<td> </td>'];
for (my $i=$mintries;$i<=$maxtries;$i++) {
push (@{$Rows[0]},
'<th colspan="3">'.&mt('Attempt').' '.$i.'</th>');
}
$Rows[1] = ['<th>'.&mt('Foil').'</th>'];
for (my $i=$mintries;$i<=$maxtries;$i++) {
push (@{$Rows[1]},('<th>'.&mt('Correct').'</th>',
'<th>'.&mt('Incorrect').'</th>',
'<th>'.&mt('Percent Correct').'</th>',
));
}
my @PlotData;
my @CumulativePlotData;
my $index = 1;
foreach my $foilid (@Foils) {
my @Data = ('<td>'.$index.' '.$Row_Label{$foilid}.'</td>');
for (my $i=$mintries;$i<=$maxtries;$i++) {
push(@Data,
('<td>'.$ResponseData{$foilid}->[$i]->{'correct'}.'</td>',
'<td>'.$ResponseData{$foilid}->[$i]->{'incorrect'}.
'</td>',
'<td>'.
sprintf("%4.2f",
$ResponseData{$foilid}->[$i]->{'percent_corr'}).
'</td>'));
#
# Gather the per-attempt data
push (@{$PlotData[$i]->{'good'}},
$ResponseData{$foilid}->[$i]->{'percent_corr'});
push (@{$PlotData[$i]->{'bad'}},
100-$ResponseData{$foilid}->[$i]->{'percent_corr'});
}
for (my $i=0;$i<=$maxtries;$i++) {
push (@{$CumulativePlotData[$i]->{'good'}},
$CumulativePlotData[-1]->{'good'}+
$ResponseData{$foilid}->[$i]->{'correct'});
push (@{$CumulativePlotData[$i]->{'bad'}},
$CumulativePlotData[-1]->{'bad'}+
$ResponseData{$foilid}->[$i]->{'incorrect'});
}
push(@Rows,\@Data);
} continue {
$index++;
}
my @Data = ('<td></td>');
for (my $i=$mintries;$i<=$maxtries;$i++) {
push(@Data,'<td colspan="3">'.&DrawGraph('Attempt '.$i,'Foil Number',
'Percent Correct',100,
$PlotData[$i]->{'good'},
$PlotData[$i]->{'bad'}).'</td>');
}
push (@Rows,\@Data);
my $table = '<table border="1" >'."\n";
for (my $i=0; $i <=$#Rows;$i++) {
$table .= '<tr>'.join('',@{$Rows[$i]})."</tr>\n";
}
$table .= '</table>';
return ($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));
$tryhash->{'percent_corr'} = 100 *
($tryhash->{'correct'} /
($tryhash->{'correct'} + $tryhash->{'incorrect'})
);
}
}
return %Trydata;
}
sub DrawGraph {
my ($title,$xlabel,$ylabel,$MaxY,$values1,$values2)=@_;
if (! defined($values1) || ref($values1) ne 'ARRAY') {
return '';
}
$title = '' if (! defined($title));
$xlabel = '' if (! defined($xlabel));
$ylabel = '' if (! defined($ylabel));
$title = &Apache::lonnet::escape($title);
$xlabel = &Apache::lonnet::escape($xlabel);
$ylabel = &Apache::lonnet::escape($ylabel);
#
my $sendValues1 = join(',', @$values1);
my $sendValues2;
if (defined($values2)) {
$sendValues2 = join(',', @$values2);
}
my $sendCount = scalar(@$values1);
$MaxY =1 if ($MaxY < 1);
if ( int($MaxY) < $MaxY ) {
$MaxY++;
$MaxY = int($MaxY);
}
my @GData = ($title,$xlabel,$ylabel,$MaxY,$sendCount,$sendValues1);
if (defined($sendValues2)) {
push (@GData,$sendValues2);
}
return '<IMG src="/cgi-bin/graph.png?'.
(join('&', @GData)).'" border="1" />';
}
sub get_problem_symb {
my $problemstring = shift();
my ($symb,$partid,$resid) = ($problemstring=~ /^(.*):([^:]*):([^:]*)$/);
return ($symb,$partid,$resid);
}
sub CreateInterface {
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 .= '</tr>'."\n";
#
$Str .= '<tr><td align="center">'."\n";
$Str .= &Apache::lonstatistics::SectionSelect('Section','multiple',5);
$Str .= '</td><td align="center">';
$Str .= &Apache::lonhtmlcommon::StatusOptions(undef,undef,5);
$Str .= '</td><td align="center">';
my $only_seq_with_assessments = sub {
my $s=shift;
if ($s->{'num_assess'} < 1) {
return 0;
} else {
return 1;
}
};
$Str .= &Apache::lonstatistics::MapSelect('Maps','multiple,all',5,
$only_seq_with_assessments);
$Str .= '</td></tr>'."\n";
$Str .= '</table>'."\n";
$Str .= '<input type="submit" name="ProblemAnalysis" value="'.
&mt('Analyze Problem').'" />';
$Str .= ' 'x5;
$Str .= '<input type="submit" name="ClearCache" value="'.
&mt('Clear Caches').'" />';
$Str .= ' 'x5;
return ($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 $Str;
}
sub get_resource_from_symb {
my ($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__
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