# The LearningOnline Network with CAPA
#
# $Id: lonsubmissiontimeanalysis.pm,v 1.27 2006/08/18 15:15:38 raeburn 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::lonsubmissiontimeanalysis;
use strict;
use Apache::lonnet;
use Apache::loncommon();
use Apache::lonhtmlcommon();
use Apache::loncoursedata();
use Apache::lonstatistics;
use Apache::lonstathelpers;
use Apache::lonlocal;
use HTML::Entities();
use Time::Local();
my $plotcolors = ['#33ff00',
'#ff33cc', '#990000', '#aaaa66', '#663399', '#ff9933',
'#66ccff', '#ff9999', '#cccc33', '#660000', '#33cc66',
];
my @SubmitButtons = (
{ name => 'PrevProblemAnalysis',
text => 'Previous Problem' },
{ name => 'ProblemAnalysis',
text => 'Analyze Problem Again' },
{ name => 'NextProblemAnalysis',
text => 'Next Problem' },
{ name => 'SelectAnother',
text => 'Choose a different Problem' },
);
sub BuildSubmissionTimePage {
my ($r,$c)=@_;
#
my %Saveable_Parameters = ('Status' => 'scalar',
'Section' => 'array');
&Apache::loncommon::store_course_settings('submissiontime_analysis',
\%Saveable_Parameters);
&Apache::loncommon::restore_course_settings('submissiontime_analysis',
\%Saveable_Parameters);
#
&Apache::lonstatistics::PrepareClasslist();
#
$r->print(&CreateInterface());
#
my @Students = @Apache::lonstatistics::Students;
#
if (@Students < 1) {
$r->print('<h2>There are no students in the sections selected</h2>');
}
#
my @CacheButtonHTML =
&Apache::lonstathelpers::manage_caches($r,'Statistics','stats_status');
$r->rflush();
#
if (! exists($env{'form.problemchoice'}) ||
exists($env{'form.SelectAnother'})) {
my $submit_button = '<input type="submit" name="" value="'.
&mt('Graph Problem Submission Times').'" />';
$r->print($submit_button.' 'x5);
$r->print('<h3>'.&mt('Please select a problem to analyze').'</h3>');
$r->print(&Apache::lonstathelpers::problem_selector('.',
$submit_button));
} else {
foreach my $button (@SubmitButtons) {
$r->print('<input type="submit" name="'.$button->{'name'}.'" '.
'value="'.&mt($button->{'text'}).'" />');
$r->print(' 'x5);
}
foreach my $html (@CacheButtonHTML) {
$r->print($html.(' 'x5));
}
$r->rflush();
#
# Determine which problem we are to analyze
my $current_problem = &Apache::lonstathelpers::get_target_from_id
($env{'form.problemchoice'});
#
my ($navmap,$prev,$curr,$next) =
&Apache::lonstathelpers::get_prev_curr_next($current_problem,
'.',
'part');
if (exists($env{'form.PrevProblemAnalysis'}) && defined($prev)) {
$current_problem = $prev;
} elsif (exists($env{'form.NextProblemAnalysis'}) && defined($next)) {
$current_problem = $next;
} else {
$current_problem = $curr;
}
#
# Store the current problem choice and send it out in the form
$env{'form.problemchoice'} =
&Apache::lonstathelpers::make_target_id($current_problem);
$r->print('<input type="hidden" name="problemchoice" value="'.
$env{'form.problemchoice'}.'" />');
#
$r->print('<hr />');
$r->rflush();
#
my $resource = $current_problem->{'resource'};
if (! defined($resource)) {
$r->print('resource is undefined');
} else {
$r->print('<h1>'.$resource->compTitle.'</h1>');
$r->print('<h3>'.$resource->src.'</h3>');
$r->print('<h4>'.
&Apache::lonstatistics::section_and_enrollment_description().
'</h4>');
$r->rflush();
$r->print(&Apache::lonstathelpers::render_resource($resource));
$r->print('<br />');
$r->rflush();
$r->print(&analyze_times($r,$resource->symb,\@Students,
$current_problem->{'part'}));
}
$r->print('<hr />');
}
}
#########################################################
#########################################################
##
## Time Analysis
##
#########################################################
#########################################################
sub get_week_start {
my ($randomtime) = @_;
my ($sec,$min,$hour,$mday,$month,$year,$wday,$yday,$isdst) =
localtime($randomtime);
$randomtime -= $wday * 86400;
($sec,$min,$hour,$mday,$month,$year,$wday,$yday,$isdst) =
localtime($randomtime);
my $week_start = &Time::Local::timelocal(0,0,0,$mday,$month,$year);
return $week_start;
}
sub analyze_times {
my ($r,$symb,$students,$part) = @_;
my $htmltable;
#
# Convenience arrays
my @FullWeekDay = (qw/Sunday Monday Tuesday Wednesday Thursday Friday
Saturday/);
my @WeekDay = (qw/SUN MON TUE WED THU FRI SAT SUN/);
my @Month = (qw/Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec/);
#
my $html; # holds results of analysis
# Get the data
my $SubData = &Apache::loncoursedata::get_response_time_data
([&Apache::lonstatistics::get_selected_sections()],
[&Apache::lonstatistics::get_selected_groups()],
$Apache::lonstatistics::enrollment_status,
$symb,$part);
if (! defined($SubData) || ! ref($SubData)) {
$html.= '<h2>There is no submission data for this problem at all</h2>';
return $html;
}
my $NumSub = scalar(@{$SubData});
if (! @{$SubData}) {
$html.= '<h2>There is no submission data for this problem</h2>';
return $html;
}
# Process the data
#
my (undef,undef,undef,$mday,$month,$year,$wday,$yday,$isdst) =
localtime(&get_time_from_row($SubData->[0]));
my $day_start = &Time::Local::timelocal(0,0,0,$mday,$month,$year);
#
# Configure the bins used to store the data.
my $binsize = 3600; # seconds
my $bins_per_day = 86400/$binsize;
my $bincount = 0;
my $endtime = $day_start;
#
# Initialize loop variables
my $max; # The sum of @Ydata
my @Ydata=(0); # number of submissions
my @AnsData=(0); # number of correct submissions
my @Xlabel=($WeekDay[$wday]); # Labels of itmes
my @BinEnd; # The end time of each bin
my $cumulative_answers = 0; # The sum of @AnsData
my %students; # which students have attempted the problem?
#
foreach my $row (@$SubData) {
my $subtime = &get_time_from_row($row);
while ($subtime > $endtime && $endtime < time) {
# Create a new bin
$bincount++;
$Ydata[$bincount] = 0;
$AnsData[$bincount] = 0;
$endtime += $binsize;
push(@BinEnd,$endtime);
if ($bincount % (86400/$binsize) == 0) {
$wday++;
$wday %= 7;
$Xlabel[$bincount] = $WeekDay[$wday];
} else {
$Xlabel[$bincount] = '';
}
}
$Ydata[$bincount]++;
$max = $Ydata[$bincount] if ($max < $Ydata[$bincount]);
$AnsData[$bincount] += &successful_submission($row);
$cumulative_answers += &successful_submission($row);
$students{$row->[&Apache::loncoursedata::RT_student_id()]}++;
}
#
# Pad the data to a full day
while ($bincount % $bins_per_day != 0) {
$bincount++;
$Ydata[$bincount]=0;
$AnsData[$bincount]=0;
$endtime += $binsize;
push(@BinEnd,$endtime);
if ($bincount % (86400/$binsize) == 0) {
$wday ++;
$wday %= 7;
$Xlabel[$bincount] = $WeekDay[$wday];
} else {
$Xlabel[$bincount] = '';
}
}
my $numstudents = scalar(keys(%students));
#
# Determine a nice maximum value to use
foreach my $maximum (10,15,20,25,30,40,50,60,70,80,90,100,
120,150,200,250,300,350,400,450,500,
600,700,800,900,1000,1100,1200,1500,2000,
2500,3000,4000,5000) {
if ($max < $maximum) {
$max = $maximum;
last;
}
}
#
# Build the data table
$htmltable = '<p>'.
'<table rules="groups" frame="border" '.
'summary="Student submission data">'.
'<thead>'.
'<tr>'.
'<th valign="bottom">'.&mt('Begin').'</th>'.
'<th>'.(' 'x3).'</th>'.
'<th valign="bottom">'.&mt('End').'</th>'.
'<th valign="bottom">'.&mt('Submissions (plotted)').'</th>'.
'<th>'.(' 'x3).'</th>'.
'<th valign="bottom">'.&mt('Correct Submissions (not plotted)').'</th>'.
'<th>'.(' 'x3).'</th>'.
'<th valign="bottom">'.&mt('Cumulative Correct of those attempting the problem (not plotted)').'</th>'.
'<th>'.(' 'x3).'</th>'.
'<th valign="bottom">'.&mt('Cumulative Percent Correct of those attempting the problem (not plotted)').'</th>'.
'<th>'.(' 'x3).'</th>'.
'<th valign="bottom">'.&mt('Cumulative Percent Correct of selected students (plotted)').'</th>'.
'</tr>'.
'</thead>'.
'<tbody>';
my @CumulativeCorrect=(0);
my @corr_as_percent_of_selected;
my @corr_as_percent_of_answering;
for (my $i=0;$i<=$#Ydata;$i++) {
$CumulativeCorrect[$i]=$CumulativeCorrect[-1]+$AnsData[$i];
$corr_as_percent_of_answering[$i] =
sprintf('%3.1f',100*$CumulativeCorrect[$i]/$numstudents);
$corr_as_percent_of_selected[$i] =
sprintf('%3.1f',100*$CumulativeCorrect[$i]/scalar(@$students));
if ($Ydata[$i] != 0) {
next if (! defined($BinEnd[$i]) || $BinEnd[$i] == 0);
$htmltable .=
'<tr>'.
'<td align="right"><nobr>'.
&Apache::lonlocal::locallocaltime($BinEnd[$i]-$binsize).
'</nobr></td>'.
'<td> </td>'.
'<td align="right"><nobr>'.
&Apache::lonlocal::locallocaltime($BinEnd[$i]).'</td>'.
'</nobr></td>'.
'<td align="right">'.$Ydata[$i].(' 'x3).'</td>'.
'<td> </td>'.
'<td align="right">'.$AnsData[$i].(' 'x3).'</td>'.
'<td> </td>'.
'<td align="right">'.$CumulativeCorrect[$i].'</td>'.
'<td> </td>'.
'<td align="right">'.$corr_as_percent_of_answering[$i].'</td>'.
'<td> </td>'.
'<td align="right">'.$corr_as_percent_of_selected[$i].'</td>'.
'</tr>'.$/;
}
}
$htmltable .= '</tbody></table></p>';
#
# Build the plot
my $title = '';#'Number of Submissions and Number Correct';
my $xlabel;
(undef,undef,undef,$mday,$month,$year,$wday) = localtime($day_start);
$xlabel .= $FullWeekDay[$wday].' '.
join(' ',($Month[$month],$mday,1900+$year)).' - ';
(undef,undef,undef,$mday,$month,$year,$wday) = localtime($endtime);
$xlabel .= $FullWeekDay[$wday].' '.
join(' ',($Month[$month],$mday,1900+$year));
my $width = 50+2*$bincount;
if ($width < 250) {
$width = 250;
}
#
$html .= &Apache::loncommon::DrawXYYGraph($title,
$xlabel,
'Submissions vs Time',
$plotcolors,
\@Xlabel,
\@Ydata,0,$max,
\@corr_as_percent_of_selected,0,100,
(xskip => $bins_per_day,
x_ticks => $bins_per_day,
x_tick_offset => $bins_per_day,
width => $width,
y1_label=>'Number of Submissions per hour',
y2_label=>'Percent of Students answering Correctly',
'data.1.label'=>'Submissions per hour',
'data.2.label'=>'Percent correct',
)
);
$html .= '<br />'.$htmltable;
return $html;
}
sub successful_submission {
my ($row) = @_;
if (ref($row) eq 'ARRAY') {
return $row->[&Apache::loncoursedata::RT_awarded()];
}
return undef;
}
sub get_time_from_row {
my ($row) = @_;
if (ref($row) eq 'ARRAY') {
return $row->[&Apache::loncoursedata::RT_timestamp()];
}
return undef;
}
sub get_tries_from_row {
my ($row) = @_;
if (ref($row) eq 'ARRAY') {
return $row->[&Apache::loncoursedata::RT_tries()];
}
return undef;
}
sub Process_Row {
my ($row) = @_;
my %RowData;
my ($student_id,$award,$tries,$time) = @$row;
return %RowData;
}
#########################################################
#########################################################
##
## Generic Interface Routines
##
#########################################################
#########################################################
sub CreateInterface {
##
## Environment variable initialization
if (! exists$env{'form.AnalyzeOver'}) {
$env{'form.AnalyzeOver'} = 'Tries';
}
##
## Build the menu
my $Str = '';
$Str .= &Apache::lonhtmlcommon::breadcrumbs('Submission Time Plots');
$Str .= '<p>';
$Str .= '<table cellspacing="5">'."\n";
$Str .= '<tr>';
$Str .= '<th align="center">'.&mt('Sections').'</th>';
$Str .= '<th align="center">'.&mt('Groups').'</th>';
$Str .= '<th align="center">'.&mt('Access Status').'</th>';
$Str .= '</tr>'."\n";
##
##
$Str .= '<tr><td align="center">'."\n";
$Str .= &Apache::lonstatistics::SectionSelect('Section','multiple',4);
$Str .= '</td>';
#
$Str .= '<td align="center">'."\n";
$Str .= &Apache::lonstatistics::GroupSelect('Group','multiple',4);
$Str .= '</td>';
#
$Str .= '<td align="center">';
$Str .= &Apache::lonhtmlcommon::StatusOptions(undef,undef,4);
$Str .= '</td>';
#
$Str .= '</tr>'."\n";
$Str .= '</table>'."\n";
#
$Str .= '<nobr>'.&mt('Status: [_1]',
'<input type="text" '.
'name="stats_status" size="60" value="" />').
'</nobr>'.'</p>';
##
return $Str;
}
1;
__END__
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