# The LearningOnline Network with CAPA
#
# $Id: lonproblemanalysis.pm,v 1.40 2003/10/16 13:23:13 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;
use HTML::Entities();
my $plotcolors = ['#33ff00',
'#0033cc', '#990000', '#aaaa66', '#663399', '#ff9933',
'#66ccff', '#ff9999', '#cccc33', '#660000', '#33cc66',
];
sub BuildProblemAnalysisPage {
my ($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" />');
}
$r->rflush();
if (exists($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.AnalyzeOver'} eq 'Tries') {
my $analysis_html = &tries_analysis($PerformanceData,
$ORdata);
$r->print($analysis_html);
} elsif ($ENV{'form.AnalyzeOver'} 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 %Foildata = %{$ORdata->{'Foils'}};
my @Foils = sort(keys(%Foildata));
my %Concepts;
foreach my $foilid (@Foils) {
push(@{$Concepts{$Foildata{$foilid}->{'Concept'}}},
$foilid);
}
undef(@Foils);
# Having gathered the concept information in a hash, we now translate it
# into an array because we need to be consistent about order.
# Also put the foils in order, too.
my $sortfunction = sub {
my %Numbers = (one => 1,
two => 2,
three => 3,
four => 4,
five => 5,
six => 6,
seven => 7,
eight => 8,
nine => 9,
ten => 10,);
my $a1 = $a;
my $b1 = $b;
if (exists($Numbers{lc($a)})) {
$a1 = $Numbers{lc($a)};
}
if (exists($Numbers{lc($b)})) {
$b1 = $Numbers{lc($b)};
}
$a1 cmp $b1;
};
my @Concepts;
foreach my $concept (sort $sortfunction (keys(%Concepts))) {
push(@Concepts,{ name => $concept,
foils => [@{$Concepts{$concept}}]});
push(@Foils,(@{$Concepts{$concept}}));
}
#
# Build up the table of row labels.
my $table = '<table border="1" >'."\n";
if (@Concepts > 1) {
$table .= '<tr>'.
'<th>'.&mt('Concept Number').'</th>'.
'<th>'.&mt('Concept').'</th>'.
'<th>'.&mt('Foil Number').'</th>'.
'<th>'.&mt('Foil Name').'</th>'.
'<th>'.&mt('Foil Text').'</th>'.
'<th>'.&mt('Correct Value').'</th>'.
"</tr>\n";
} else {
$table .= '<tr>'.
'<th>'.&mt('Foil Number').'</th>'.
'<th>'.&mt('Foil Name').'</th>'.
'<th>'.&mt('Foil Text').'</th>'.
'<th>'.&mt('Correct Value').'</th>'.
"</tr>\n";
}
my $conceptindex = 1;
my $foilindex = 1;
foreach my $concept (@Concepts) {
my @FoilsInConcept = @{$concept->{'foils'}};
my $firstfoil = shift(@FoilsInConcept);
if (@Concepts > 1) {
$table .= '<tr>'.
'<td>'.$conceptindex.'</td>'.
'<td>'.$concept->{'name'}.'</td>'.
'<td>'.$foilindex++.'</td>'.
'<td>'.$Foildata{$firstfoil}->{'name'}.'</td>'.
'<td>'.$Foildata{$firstfoil}->{'text'}.'</td>'.
'<td>'.$Foildata{$firstfoil}->{'value'}.'</td>'.
"</tr>\n";
} else {
$table .= '<tr>'.
'<td>'.$foilindex++.'</td>'.
'<td>'.$Foildata{$firstfoil}->{'name'}.'</td>'.
'<td>'.$Foildata{$firstfoil}->{'text'}.'</td>'.
'<td>'.$Foildata{$firstfoil}->{'value'}.'</td>'.
"</tr>\n";
}
foreach my $foilid (@FoilsInConcept) {
if (@Concepts > 1) {
$table .= '<tr>'.
'<td></td>'.
'<td></td>'.
'<td>'.$foilindex.'</td>'.
'<td>'.$Foildata{$foilid}->{'name'}.'</td>'.
'<td>'.$Foildata{$foilid}->{'text'}.'</td>'.
'<td>'.$Foildata{$foilid}->{'value'}.'</td>'.
"</tr>\n";
} else {
$table .= '<tr>'.
'<td>'.$foilindex.'</td>'.
'<td>'.$Foildata{$foilid}->{'name'}.'</td>'.
'<td>'.$Foildata{$foilid}->{'text'}.'</td>'.
'<td>'.$Foildata{$foilid}->{'value'}.'</td>'.
"</tr>\n";
}
} continue {
$foilindex++;
}
} continue {
$conceptindex++;
}
$table .= "</table>\n";
#
# Build option index with color stuff
return ($table,\@Foils,\@Concepts);
}
sub build_option_index {
my ($ORdata)= @_;
my $table = "<table>\n";
my $optionindex = 0;
my @Rows;
foreach my $option ('correct',@{$ORdata->{'Options'}}) {
push (@Rows,
'<tr>'.
'<td bgcolor="'.$plotcolors->[$optionindex++].'">'.
(' 'x4).'</td>'.
'<td>'.$option.'</td>'.
"</tr>\n");
}
$table .= join('',reverse(@Rows));
$table .= "</table>\n";
}
#########################################################
#########################################################
##
## Tries Analysis
##
#########################################################
#########################################################
sub tries_analysis {
my ($PerformanceData,$ORdata) = @_;
my $mintries = 1;
my $maxtries = $ENV{'form.NumPlots'};
my ($table,$Foils,$Concepts) = &build_foil_index($ORdata);
if ((@$Concepts < 2) && ($ENV{'form.AnalyzeAs'} ne 'Foils')) {
$table = '<h3>'.
&mt('Not enough data for concept analysis. '.
'Performing Foil Analysis').
'</h3>'.$table;
$ENV{'form.AnalyzeAs'} = 'Foils';
}
my %ResponseData = &analyze_option_data_by_tries($PerformanceData,
$mintries,$maxtries);
#
# Compute the data neccessary to make the plots
my @PlotData; # Array which holds the data for each plot
# @{$PlotData[$try]->{'datasetname'}} holds the data for
# try $try with respect to 'datasetname'. The array is
# filled either with per-foil or per-concept data.
my ($extrakey,$xlabel,$ylabel);
if ($ENV{'form.AnalyzeAs'} eq 'Foils') {
$extrakey = &build_option_index($ORdata);
$xlabel = 'Foil Number';
$ylabel = 'Option Chosen';
foreach my $foilid (@$Foils) {
for (my $i=$mintries;$i<=$maxtries;$i++) {
foreach my $option ('_correct',@{$ORdata->{'Options'}}) {
push(@{$PlotData[$i]->{'_total'}},
$ResponseData{$foilid}->[$i]->{'_total'});
if ($ResponseData{$foilid}->[$i]->{'_total'} == 0) {
push (@{$PlotData[$i]->{$option}},0);
} else {
push (@{$PlotData[$i]->{$option}},
100 * $ResponseData{$foilid}->[$i]->{$option} /
$ResponseData{$foilid}->[$i]->{'_total'});
}
}
}
}
} else {
# Concept analysis
#
# Note: we do not bother with characterizing the students incorrect
# answers at the concept level because an incorrect answer for one foil
# may be a correct answer for another foil.
$extrakey = '';
$xlabel = 'Concept Number';
$ylabel = 'Percent Correct';
my %ConceptData;
foreach my $concept (@{$Concepts}) {
for (my $i=$mintries;$i<=$maxtries;$i++) {
#
# Gather the per-attempt data
my $cdata = $ConceptData{$concept}->[$i];
foreach my $foilid (@{$concept->{'foils'}}) {
$cdata->{'_correct'} +=
$ResponseData{$foilid}->[$i]->{'_correct'};
$cdata->{'_total'} +=
$ResponseData{$foilid}->[$i]->{'_total'};
}
push (@{$PlotData[$i]->{'_total'}},$cdata->{'_total'});
if ($cdata->{'_total'} == 0) {
push (@{$PlotData[$i]->{'_correct'}},0);
} else {
push (@{$PlotData[$i]->{'_correct'}},
100*$cdata->{'_correct'}/$cdata->{'_total'});
}
}
}
} # End of work to fill @PlotData
#
# Build a table for the plots
$table .= "<table>\n";
my @Plots;
for (my $i=$mintries;$i<=$maxtries;$i++) {
my $minstu = $PlotData[$i]->{'_total'}->[0];
my $maxstu = $PlotData[$i]->{'_total'}->[0];
foreach my $count (@{$PlotData[$i]->{'_total'}}) {
if ($minstu > $count) {
$minstu = $count;
}
if ($maxstu < $count) {
$maxstu = $count;
}
}
$maxstu = 0 if (! defined($maxstu));
$minstu = 0 if (! defined($minstu));
my $title;
if ($maxstu == $minstu) {
$title = 'Attempt '.$i.', '.$maxstu.' students';
} else {
$title = 'Attempt '.$i.', '.$minstu.'-'.$maxstu.' students';
}
my @Datasets;
foreach my $option ('_correct',@{$ORdata->{'Options'}}) {
next if (! exists($PlotData[$i]->{$option}));
push(@Datasets,$PlotData[$i]->{$option});
}
my $graphlink = &Apache::loncommon::DrawGraph($title,
$xlabel,
$ylabel,
100,
$plotcolors,
@Datasets);
push(@Plots,$graphlink);
}
#
# Should this be something the user can set? Too many dialogs!
while (my $plotlink = shift(@Plots)) {
$table .= '<tr><td>'.$plotlink.'</td><td>'.$extrakey."</td></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;
next if ($grading eq 'MISSING_ANSWER');
my @Foilgrades = split('&',$grading);
my @Foilsubs = split('&',$submission);
for (my $numtries = 1; $numtries <= $maxtries; $numtries++) {
if ($tries == $numtries) {
for (my $i=0;$i<=$#Foilgrades;$i++) {
my ($foilid,$correct) = split('=',$Foilgrades[$i]);
my (undef,$submission) = split('=',$Foilsubs[$i]);
$submission = &HTML::Entities::decode($submission);
$submission =~ s/\%20/ /g;
if ($correct) {
$Trydata{$foilid}->[$numtries]->{'_correct'}++;
} else {
$Trydata{$foilid}->[$numtries]->{$submission}++;
}
$Trydata{$foilid}->[$numtries]->{'_total'}++;
}
}
}
}
return %Trydata;
}
#########################################################
#########################################################
##
## Time Analysis
##
#########################################################
#########################################################
sub time_analysis {
my ($PerformanceData,$ORdata) = @_;
my $num_plots = $ENV{'form.NumPlots'};
my ($table,$Foils,$Concepts) = &build_foil_index($ORdata);
my $num_data = scalar(@$PerformanceData)-1;
my $percent = sprintf('%2f',100/$num_plots);
my $extratable = '';
if ($ENV{'form.AnalyzeAs'} eq 'Foils') {
$extratable = &build_option_index($ORdata);
}
$table .= "<table>\n";
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 = $ENV{'form.plottitle_'.$i};
}
($plothtml,$starttime,$endtime,$data) =
&analyze_option_data_by_time($PerformanceData,
$begin_index,$end_index,
$plottitle,$Foils,
$Concepts,$ORdata);
my $startdateform = &Apache::lonhtmlcommon::date_setter
('Statistics','startdate_'.$i,$starttime);
my $enddateform = &Apache::lonhtmlcommon::date_setter
('Statistics','enddate_'.$i,$endtime);
$table.="<tr><td>".$plothtml.'</td><td align="left" valign="top">'.
"<b>Start Time</b>: ".$startdateform."<br />".
"<b>End Time</b> : "." ".$enddateform."<br />".
'<b>Plot Title</b> :'.(" "x3).
'<input type="text" size="30" name="plottitle_'.$i.'" value="'.
&HTML::Entities::encode($plottitle).'" /><br />'.$extratable.
"</td></tr>\n";
}
$table .="</table>\n";
return $table;
}
sub analyze_option_data_by_time {
my ($PerformanceData,$begin_index,
$end_index,$description,$Foils,$Concepts,$ORdata) = @_;
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;
next if ($grading eq 'MISSING_ANSWER');
my @Foilgrades = split('&',$grading);
my @Foilsubs = split('&',$submission);
for (my $j=0;$j<=$#Foilgrades;$j++) {
my ($foilid,$correct) = split('=',$Foilgrades[$j]);
my (undef,$submission) = split('=',$Foilsubs[$j]);
if ($correct) {
$TimeData{$foilid}->{'_correct'}++;
} else {
$submission = &HTML::Entities::decode($submission);
$submission =~ s/\%20/ /g;
$TimeData{$foilid}->{$submission}++;
}
$TimeData{$foilid}->{'_total'}++;
}
}
#
# Compute the total and percent correct
my @Plotdata;
my ($xlabel,$ylabel);
if ($ENV{'form.AnalyzeAs'} eq 'Foils') {
$xlabel = 'Foil Number';
$ylabel = 'Option Chosen';
foreach my $foil (@$Foils) {
my $total = $TimeData{$foil}->{'_total'};
my $optionidx = 0;
foreach my $option ('_correct',@{$ORdata->{'Options'}}) {
if ($total > 0) {
push(@{$Plotdata[$optionidx]},
100 * $TimeData{$foil}->{$option} / $total);
} else {
push(@{$Plotdata[$optionidx]},0);
}
} continue {
$optionidx++;
}
}
} else {
$xlabel = 'Concept Number';
$ylabel = 'Percent Correct';
foreach my $concept (@$Concepts) {
my $correct;
my $total;
foreach my $foil (@{$concept->{'foils'}}) {
$correct+=$TimeData{$foil}->{'_correct'};
$total +=$TimeData{$foil}->{'_total'};
}
if ($total > 0) {
push(@{$Plotdata[0]},100 * $correct / $total);
} else {
push(@{$Plotdata[0]},0);
}
}
}
#
# Create the plot
my $graphlink = &Apache::loncommon::DrawGraph
($description,#'Time Interval Analysis',
$xlabel,
$ylabel,
100,
$plotcolors,
@Plotdata);
#
return ($graphlink,$starttime,$endtime,\%TimeData);
}
#########################################################
#########################################################
##
## Interface
##
#########################################################
#########################################################
sub CreateInterface {
##
## Environment variable initialization
if (! exists$ENV{'form.AnalyzeOver'}) {
$ENV{'form.AnalyzeOver'} = '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>';
{ # These braces are here to organize the code, not scope it.
{
$Str .= '<nobr>'.&mt('Analyze Over ');
$Str .='<select name="AnalyzeOver" >';
$Str .= '<option value="Tries" ';
if (! exists($ENV{'form.AnalyzeOver'}) ||
$ENV{'form.AnalyzeOver'} eq 'Tries'){
# Default to Tries
$Str .= ' selected ';
}
$Str .= '>'.&mt('Tries').'</option>';
$Str .= '<option value="Time" ';
$Str .= ' selected ' if ($ENV{'form.AnalyzeOver'} eq 'Time');
$Str .= '>'.&mt('Time').'</option>';
$Str .= '</select></nobr><br />';
}
{
$Str .= '<nobr>'.&mt('Analyze as ');
$Str .='<select name="AnalyzeAs" >';
$Str .= '<option value="Concepts" ';
if (! exists($ENV{'form.AnalyzeAs'}) ||
$ENV{'form.AnalyzeAs'} eq 'Concepts'){
# Default to Concepts
$Str .= ' selected ';
}
$Str .= '>'.&mt('Concepts').'</option>';
$Str .= '<option value="Foils" ';
$Str .= ' selected ' if ($ENV{'form.AnalyzeAs'} eq 'Foils');
$Str .= '>'.&mt('Foils').'</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'}}) {
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 $res;
}
}
}
return undef;
}
##
## get problem data and put it into a useful data structure.
## note: we must force each foil and option to not begin or end with
## spaces as they are stored without such data.
##
sub get_problem_data {
my ($url) = @_;
my $Answ=&Apache::lonnet::ssi($url,('grade_target' => 'analyze'));
(my $garbage,$Answ)=split(/_HASH_REF__/,$Answ,2);
my %Answer;
%Answer=&Apache::lonnet::str2hash($Answ);
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') {
for(my $i=0;$i<scalar(@$value);$i++) {
$value->[$i]=~ s/(\s*$|^\s*)//g;
}
$Partdata{$part}->{'Options'}=$value;
} elsif ($key eq 'concepts') {
$Partdata{$part}->{'Concepts'}=$value;
} elsif ($key =~ /^concept\.(.*)$/) {
my $concept = $1;
foreach my $foil (@$value) {
$foil =~ s/(\s*$|^\s*)//g;
$Partdata{$part}->{'Foils'}->{$foil}->{'Concept'}=
$concept;
}
}
} else {
$value =~ s/(\s*$|^\s*)//g;
if ($key=~ /^foil\.text\.(.*)$/) {
my $foil = $1;
$foil =~ s/(\s*$|^\s*)//g;
$Partdata{$part}->{'Foils'}->{$foil}->{'name'}=$foil;
$Partdata{$part}->{'Foils'}->{$foil}->{'text'}=$value;
} elsif ($key =~ /^foil\.value\.(.*)$/) {
my $foil = $1;
$foil =~ s/(\s*$|^\s*)//g;
$Partdata{$part}->{'Foils'}->{$foil}->{'value'}=$value;
}
}
}
}
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