# The LearningOnline Network with CAPA
# (Publication Handler
#
# $Id: lonstatistics.pm,v 1.28 2002/07/19 18:17:34 minaeibi 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
# YEAR=2001
# 5/5,7/9,7/25/1,8/11,9/13,9/26,10/5,10/9,10/22,10/26 Behrouz Minaei
# 11/1,11/4,11/16,12/14,12/16,12/18,12/20,12/31 Behrouz Minaei
# YEAR=2002
# 1/22,2/1,2/6,2/25,3/2,3/6,3/17,3/21,3/22,3/26,4/7,5/6 Behrouz Minaei
# 5/12,5/14,5/15,5/19,5/26,7/16 Behrouz Minaei
#
###
package Apache::lonstatistics;
use strict;
use Apache::Constants qw(:common :http);
use Apache::lonnet();
use Apache::lonhomework;
use Apache::loncommon;
use HTML::TokeParser;
use GDBM_File;
# -------------------------------------------------------------- Module Globals
my %hash;
my %CachData;
my %GraphDat;
my $r;
my $GData;
my %color;
my %foil_to_concept;
my @Concepts;
my %ConceptData;
my %Answer=();
my %mapsort;
my %Activity=();
my %Grade=();
my %DoDiff=();
my %Discuss=();
my $TotalDiscuss=0;
my $TotalDiscuss_=0;
sub LoadDiscussion {
# my $symb=shift;
# $r->print('<br>$cid ... '.$symb);
# my %contrib=&Apache::lonnet::dump('msu_2964385f9033c63msul1','msu','2964385f9033c63msul1');
my $cid=$ENV{'request.course.id'};
my %contrib=&Apache::lonnet::dump(
$ENV{'request.course.id'},
$ENV{'course.'.$ENV{'request.course.id'}.'.domain'},
$ENV{'course.'.$ENV{'request.course.id'}.'.num'});
foreach my $temp(keys %contrib) {
if ($temp=~/^version/) {
my $ver=$contrib{$temp};
my ($dummy,$prb)=split(':',$temp);
for (my $idx=1; $idx<=$ver; $idx++ ) {
my $name=$contrib{"$idx:$prb:sendername"};
$Discuss{"$name:$prb"}=$idx;
}
}
}
# $r->print('<br>cid='.$cid);
# my %contrib=&Apache::lonnet::restore($symb,$cid,
# $ENV{$cid.'.domain'},
# $ENV{'course.'.$cid.'.num'});
# $Apache::lonxml::debug=1;
# &Apache::lonhomework::showhash(%Discuss);
# $Apache::lonxml::debug=0;
}
sub LoadDoDiffFile {
my $file="/home/minaeibi/183d.txt";
open(FILEID, "<$file");
my $line=<FILEID>;
%DoDiff=();
my @Act=split('&',$line);
# $r->print('<br>'.$#Act);
for(my $n=0;$n<=$#Act;$n++){
my ($res,$Degree)=split('@',$Act[$n]);
$DoDiff{$res}=$Degree;
}
}
sub LoadClassFile {
my $file="/home/minaeibi/class.txt";
open(FILEID, "<$file");
my $line;
%Grade=();
while ($line=<FILEID>) {
my ($id,$ex1,$ex2,$ex3,$ex4,$hw,$final,$grade)=split(' ',$line);
$Grade{$id}=$grade;
}
}
#------- Classification
sub Classify {
my ($DiscFac, $students)=@_;
&LoadClassFile();
my $Count=0;
my @List=();
my @LS=();
my @LF=();
my @LM=();
my $cf=0;
my $cs=0;
my $cm=0;
foreach (keys(%$DiscFac)){
my @l=split(/\:/,$_);
if (!($students->{$l[1]})) {next;}
my $Grade=$Grade{$students->{$l[1]}};
if( $Grade > 3 ) {
$cs++;
push(@LS,("$l[6],$l[5],$l[4],$l[7],$l[8],$l[9],Successful"));
} elsif ( $Grade > 2 ) {
$cm++;
push(@LM,("$l[6],$l[5],$l[4],$l[7],$l[8],$l[9],Average"));
} else {
$cf++;
push(@LF,("$l[6],$l[5],$l[4],$l[7],$l[8],$l[9],Failed"));
}
}
for(my $n=0;$n<$cs;$n++){$r->print('<br>'.$LS[$n]);}
for(my $n=0;$n<$cm;$n++){$r->print('<br>'.$LM[$n]);}
for(my $n=0;$n<$cf;$n++){$r->print('<br>'.$LF[$n]);}
}
sub ProcAct {
# return;
my ($Act,$Submit)=@_;
my @Act=split(/\@/,$Act);
@Act = sort(@Act);
##$r->print('<br>'.$#Act);
##for(my $n=0;$n<=$#Act;$n++){
## $r->print('<br>n='.$n.')'.$Act[$n]);
## }
# my $Beg=$Act[0];
my $Dif=$Submit-$Act[0];
$Dif = ($Dif>0) ? ($Dif/3600) : 0;
# $r->print('<br>Access Number = '.$#Act.'<br>Submit Time='.$Submit.'<br>First Access='.$Act[0].'<br>Last Access='.$Act[$#Act].'<br> Submit - First = <b>'.$Dif.'</b>');
#time spent for solving the problem
# $r->print('<br>Def'.($Act[$#Act-1]-$Act[0]));
return $Dif;
}
sub LoadActivityLog {
# my $CacheDB = "/home/minaeibi/act183.log.cache";
my $CacheDB = "/home/httpd/perl/tmp/act183.log.cache";
if (-e "$CacheDB") {
if (tie(%Activity,'GDBM_File',"$CacheDB",&GDBM_READER,0640)) {
return;
}
else {
$r->print("Unable to tie log Cache hash to db file");
}
}
else {
if (tie(%Activity,'GDBM_File',$CacheDB,&GDBM_WRCREAT,0640)) {
foreach (keys %Activity) {delete $Activity{$_};}
&Build_log();
}
else {
$r->print("Unable to tie log Build hash to db file");
}
}
}
sub Build_log {
my $file="/home/minaeibi/act183.log";
open(FILEID, "<$file");
my $line;
my $count=0;
while ($line=<FILEID>) {
my ($time,$machine,$what)=split(':',$line);
$what=&Apache::lonnet::unescape($what);
my @accesses=split('&',$what);
foreach my $access (@accesses) {
$count++;
my ($date,$resource,$who,$domain,$post,@posts)=split(':',$access);
if (!$resource) { next; }
my $res=&Apache::lonnet::unescape($resource);
if (($res =~ /\.problem/)) {
$Activity{$who.':'.$res}.=$date.'@';
#$r->print('<br>'.$time.':'.$who.'---'.$res);
&Update_PrgInit($count);
}
}
}
# my $c=1;
# foreach (sort keys %Activity) {
# $r->print('<br>'.$c.')'.$_.' ... '.$Activity{$_});
# $c++;
# }
}
sub Activity {
# $rid=~/(\d+)\.(\d+)/;
# my $MapId=$1;
# my $PrbId=$2;
# my $MapOrg = $hash{'map_id_'.$MapId};
# my $Map = &Apache::lonnet::declutter($MapOrg);
# my $URI = $hash{'src_'.$rid};
# my $Symb = $Map.'___'.$PrbId.'___'.&Apache::lonnet::declutter($URI);
my $file="/home/minaeibi/activity.log";
my $userid='adamsde1';
$r->print("<br>Using $file");
$r->rflush();
open(FILEID, "<$file");
my $line;
my @allaccess;
my $Count=0;
while ($line=<FILEID>) {
my ($time,$machine,$what)=split(':',$line);
$what=&Apache::lonnet::unescape($what);
my @accesses=split('&',$what);
foreach my $access (@accesses) {
my ($date,$resource,$who,$domain,$post,@posts)=split(':',$access);
#if ($who ne $userid) { next; }
if (!$resource) { next; }
my $res=&Apache::lonnet::unescape($resource);
if (($res =~ /\.(sequence|problem|htm|html|page)/)) {
$Count++;
$r->print("<br>$Count) ".localtime($date).": $who --> $res");
# if ($post) {
# $Count++;
# $r->print("<br><b>$Count) Sent data ".join(':',
# &Apache::lonnet::unescape(@posts)).'</b>');
# }
$r->rflush();
}
#push (@allaccess,unescape($access));
#print $machine;
}
}
# @allaccess=sort(@allaccess);
# $Count=0;
# foreach my $access (@allaccess) {
# my ($date,$resource,$who,$domain,$post,@posts)=split(':',$access);
# $Count++;
# $r->print("<br>$Count) $date: $who --> $resource");
# $r->rflush();
# if ($post) {
# $r->print("<br><b>Sent data ".join(':',unescape(@posts)).'</b>');
# }
# }
}
sub InitAnalysis {
my ($uri,$part,$problem,$student,$courseID)=@_;
my ($uname,$udom)=split(/\:/,$student);
# Render the student's view of the problem. $Answ is the problem
# Stringafied
my $Answ=&Apache::lonnet::ssi($uri,('grade_target' => 'analyze',
'grade_username' => $uname,
'grade_domain' => $udom,
'grade_courseid' => $courseID,
'grade_symb' => $problem));
# my $Answ=&Apache::lonnet::ssi($URI,('grade_target' => 'analyze'));
# (my $garbage,$Answ)=split(/_HASH_REF__/,$Answ,2);
%Answer=();
%Answer=&Apache::lonnet::str2hash($Answ);
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.$foil"};
}
}
return;
}
sub Interval {
my ($part,$symb)=@_;
my $Int=$ConceptData{"Interval"};
my $due = &Apache::lonnet::EXT('resource.$part.duedate',$symb)+1;
my $opn = &Apache::lonnet::EXT('resource.$part.opendate',$symb);
my $add=int(($due-$opn)/$Int);
$ConceptData{"Int.0"}=$opn;
for (my $i=1;$i<$Int;$i++) {
$ConceptData{"Int.$i"}=$opn+$i*$add;
}
$ConceptData{"Int.$Int"}=$due;
for (my $i=0;$i<$Int;$i++) {
for (my $n=0; $n<=$#Concepts; $n++ ) {
my $tmp=$Concepts[$n];
$ConceptData{"$tmp.$i.true"}=0;
$ConceptData{"$tmp.$i.false"}=0;
}
}
}
sub ShowOpGraph {
my ($cache, $students, $courseID)=@_;
my $uri = $cache->{'AnalyzeURI'};
my $part = $cache->{'AnalyzePart'};
my $problem = $cache->{'AnalyzeProblem'};
my $title = $cache->{'AnalyzeTitle'};
my $interval = $cache->{'Interval'};
$ConceptData{"Interval"} = $interval;
#Initialize the option response true answers
&InitAnalysis($uri, $part, $problem, $students->[0],$courseID);
#compute the intervals
&Interval($part,$problem);
$title =~ s/\ /"_"/eg;
$r->print('<br><b>'.$uri.'</b>');
$r->rflush();
#Java script Progress window
&Create_PrgWin();
&Update_PrgWin("Starting-to-analyze-problem");
for (my $index=0;$index<(scalar @$students);$index++) {
&Update_PrgWin($index);
&OpStatus($problem,$students->[$index],$courseID);
}
&Close_PrgWin();
$r->print('<br>');
for (my $k=0; $k<$interval; $k++ ) {
&DrawGraph($k,$title);
}
for (my $k=0; $k<$interval; $k++ ) {
&DrawTable($k);
}
#$Apache::lonxml::debug=1;
#&Apache::lonhomework::showhash(%ConceptData);
#$Apache::lonxml::debug=0;
my $Answ=&Apache::lonnet::ssi($uri);
$r->print("<br><b>Here you can see the Problem:</b><br>$Answ");
}
sub DrawTable {
my $k=shift;
my $Max=0;
my @data1;
my @data2;
my $Correct=0;
my $Wrong=0;
for (my $n=0; $n<=$#Concepts; $n++ ) {
my $tmp=$Concepts[$n];
$data1[$n]=$ConceptData{"$tmp.$k.true"};
$Correct+=$data1[$n];
$data2[$n]=$ConceptData{"$tmp.$k.false"};
$Wrong+=$data2[$n];
my $Sum=$data1[$n]+$data2[$n];
if ( $Max<$Sum ) {$Max=$Sum;}
}
for (my $n=0; $n<=$#Concepts; $n++ ) {
if ($data1[$n]+$data2[$n]<$Max) {
$data2[$n]+=$Max-($data1[$n]+$data2[$n]);
}
}
my $P_No = $#data1+1;
# $r->print('<br><b>From: ['.localtime($ConceptData{'Int.'.($k-1)}).
# '] To: ['.localtime($ConceptData{"Int.$k"}).']</b>');
my $Str = "\n".'<table border=2>'.
"\n".'<tr>'.
"\n".'<th> # </th>'.
"\n".'<th> Concept </th>'.
"\n".'<th> Correct </th>'.
"\n".'<th> Wrong </th>'.
"\n".'</tr>';
for (my $n=0; $n<=$#Concepts; $n++ ) {
$Str .= "\n"."<tr>".
"\n"."<td>".($n+1)."</td>".
"\n".'<td bgcolor='.$color{"yellow"}.'> '.$Concepts[$n]." </td>".
"\n".'<td bgcolor='.$color{"green"}.'> '.$data1[$n]." </td>".
"\n".'<td bgcolor='.$color{"red"}.'> '.$data2[$n]." </td>".
"\n"."</tr>";
}
$Str.='<td></td><td><b>From:['.localtime($ConceptData{'Int.'.$k}).
'] To: ['.localtime($ConceptData{'Int.'.($k+1)}-1).
"]</b></td><td>$Correct</td><td>$Wrong</td>";
$Str .= "\n".'</table>';
$r->print($Str);
#$Apache::lonxml::debug=1;
#&Apache::lonhomework::showhash(%ConceptData);
#$Apache::lonxml::debug=0;
}
sub DrawGraph {
my ($k,$Src)=@_;
my $Max=0;
my @data1;
my @data2;
# Adjust Data and find the Max
for (my $n=0; $n<=$#Concepts; $n++ ) {
my $tmp=$Concepts[$n];
$data1[$n]=$ConceptData{"$tmp.$k.true"};
$data2[$n]=$ConceptData{"$tmp.$k.false"};
my $Sum=$data1[$n]+$data2[$n];
if ( $Max<$Sum ) {$Max=$Sum;}
}
for (my $n=0; $n<=$#Concepts; $n++ ) {
if ($data1[$n]+$data2[$n]<$Max) {
$data2[$n]+=$Max-($data1[$n]+$data2[$n]);
}
}
my $P_No = $#data1+1;
if ( $Max > 1 ) {
$Max += (10 - $Max % 10);
$Max = int($Max);
} else { $Max = 1; }
my $Titr=($ConceptData{'Interval'}>1) ? $Src.'_interval_'.($k+1) : $Src;
# $GData=$Titr.'&Concepts'.'&'.'Answers'.'&'.$Max.'&'.$P_No.'&'.$data1.'&'.$data2;
$GData="$Titr&Concepts&Answers&$Max&$P_No&".
(join(',',@data1)).'&'.(join(',',@data2));
$r->print('<IMG src="/cgi-bin/graph.gif?'.$GData.'" border=1/>');
}
sub Decide {
#deciding the true or false answer belongs to each interval
my ($type,$foil,$time)=@_;
my $k=0;
while ($time>$ConceptData{'Int.'.($k+1)} &&
$k<$ConceptData{'Interval'}) {$k++;}
$ConceptData{"$foil_to_concept{$foil}.$k.$type"}++;
}
#restore the student submissions and finding the result
sub OpStatus {
my ($problem, $student, $courseID)=@_;
my ($username,$userdomain)=split(/':'/,$student);
my $code='U';
my %reshash=&Apache::lonnet::restore($problem, $courseID, $userdomain,
$username);
my @True = ();
my @False = ();
my $flag=0;
if ($reshash{'version'}) {
my $tries=0;
&Apache::lonhomework::showhash(%Answer);
for (my $version=1;$version<=$reshash{'version'};$version++) {
my $time=$reshash{"$version:timestamp"};
foreach my $key (sort(split(/\:/,$reshash{$version.':keys'}))) {
if (($key=~/\.(\w+)\.(\w+)\.submission$/)) {
my $Id1 = $1; my $Id2 = $2;
#check if this is a repeat submission, if so skip it
if ($reshash{"$version:resource.$Id1.previous"}) { next; }
#if no solved this wasn't a real submission, ignore it
if (!defined($reshash{"$version:resource.$Id1.solved"})) {
&Apache::lonxml::debug("skipping ");
next;
}
my $Resp = $reshash{"$version:$key"};
my %submission=&Apache::lonnet::str2hash($Resp);
foreach (keys %submission) {
my $Ansr = $Answer{"$Id1.$Id2.foil.value.$_"};
if ($submission{$_}) {
if ($submission{$_} eq $Ansr) {
&Decide("true",$_,$time );
}
else {&Decide("false",$_,$time );}
}
}
}
}
}
}
}
#---- END Analyze Web Page ----------------------------------------------
#---- Problem Statistics Web Page ---------------------------------------
#------- Processing upperlist and lowerlist according to each problem
sub ProcessDiscriminant {
my ($List) = @_;
my @sortedList = sort (@$List);
my $Count = scalar @sortedList;
my $Problem;
my @Dis;
my $Slvd=0;
my $tmp;
my $Sum1=0;
my $Sum2=0;
my $nIndex=0;
my $nStudent=0;
my %Proc=undef;
while ($nIndex<$Count) {
($Problem,$tmp)=split(/\=/,$sortedList[$nIndex]);
@Dis=split(/\+/,$tmp);
my $Temp = $Problem;
do {
$nIndex++;
$nStudent++;
$Sum1 += $Dis[0];
$Sum2 += $Dis[1];
($Problem,$tmp)=split(/\=/,$sortedList[$nIndex]);
@Dis=split(/\+/,$tmp);
} while ( $Problem eq $Temp && $nIndex < $Count );
# $Proc{$Temp}=($Sum1/$nStudent).':'.$nStudent;
$Proc{$Temp}=($Sum1/$nStudent).':'.($Sum2/$nStudent);
# $r->print("$nIndex) $Temp --> ($nStudent) $Proc{$Temp} <br>");
$Sum1=0;
$Sum2=0;
$nStudent=0;
}
return %Proc;
}
#------- Creating Discimination factor
sub Discriminant {
my ($discriminantFactor)=@_;
my @discriminantKeys=keys(%$discriminantFactor);
my $Count = scalar @discriminantKeys;
my $UpCnt = int(0.27*$Count);
my $low=0;
my $up=$Count-$UpCnt;
my @UpList=();
my @LowList=();
$Count=0;
foreach my $key (sort(@discriminantKeys)) {
$Count++;
if($low < $UpCnt || $Count > $up) {
$low++;
my $str=$discriminantFactor->{$key};
foreach(split(/\:/,$str)){
if($_) {
if($low<$UpCnt) { push(@LowList,$_); }
else { push(@UpList,$_); }
}
}
}
}
my %DisUp = &ProcessDiscriminant(\@UpList);
my %DisLow = &ProcessDiscriminant(\@LowList);
return (\%DisUp, \%DisLow);
}
sub NumericSort {
$a <=> $b;
}
sub CreateProblemStatisticsTableHeading {
my ($displayFormat,$sequenceSource,$sequenceTitle,$headings)=@_;
if($displayFormat eq 'Display CSV Format') {
$r->print('<br>"'.$sequenceTitle.'","');
$r->print($sequenceSource.'"');
return;
}
$r->print('<br><a href="'.$sequenceSource.
'" target="_blank">'.$sequenceTitle.'</a>');
my $Result = "\n".'<table border=2><tr><th>P#</th>'."\n";
for(my $nIndex=0; $nIndex < (scalar (keys %$headings)); $nIndex++) {
$Result .= '<th>'.'<input type="submit" name="';
$Result .= 'ProblemStatisticsHeading" value="';
$Result .= $headings->{$nIndex}.'" />'.'</th>'."\n";
}
$Result .= "\n".'</tr>'."\n";
$r->print($Result);
$r->rflush();
}
sub CloseTable {
my ($cache)=@_;
if($cache->{'DisplayFormat'} eq 'Display CSV Format') {
return;
}
$r->print("\n".'</table>'."\n");
$r->rflush();
}
# ------ Dump the Student's DB file and handling the data for statistics table
sub ExtractStudentData {
my ($cache,$name,$list)=@_;
my %discriminantFactor;
my $totalTries = 0;
my $totalAwarded = 0;
my $tempProblemOrder=0;
my $spent=0;
my $spent_yes=0;
my $TotDiscuss=0;
my $TotalOpend = 0;
my $ProbSolved = 0;
my $ProbTot = 0;
my $TotFirst = 0;
my $TimeTot = 0;
my $Discussed=0;
foreach my $sequence (split(':', $cache->{'orderedSequences'})) {
if($cache->{'ProblemStatisticsMap'} ne 'All Maps' &&
$cache->{'ProblemStatisticsMap'} ne $cache->{$sequence.':title'}) {
next;
}
my $Dis = '';
foreach my $problemID (split(':', $cache->{$sequence.':problems'})) {
my $problem = $cache->{$problemID.':problem'};
my $LatestVersion = $cache->{$name.':version:'.$problem};
# Output dashes for all the parts of this problem if there
# is no version information about the current problem.
#if(!$LatestVersion) {
# foreach my $part (split(/\:/,$cache->{$sequence.':'.
# $problemID.
# ':parts'})) {
# $codes .= "-,";
# $attempts .= "0,";
# }
# next;
#}
my %partData=undef;
# Initialize part data, display skips correctly
# Skip refers to when a student made no submissions on that
# part/problem.
foreach my $part (split(/\:/,$cache->{$sequence.':'.
$problemID.
':parts'})) {
$partData{$part.':tries'}=0;
$partData{$part.':code'}='-';
}
# Looping through all the versions of each part, starting with the
# oldest version. Basically, it gets the most recent
# set of grade data for each part.
for(my $Version=1; $Version<=$LatestVersion; $Version++) {
foreach my $part (split(/\:/,$cache->{$sequence.':'.
$problemID.
':parts'})) {
if(!defined($cache->{$name.":$Version:$problem".
":resource.$part.solved"})) {
# No grade for this submission, so skip
next;
}
my $tries=0;
my $time=0;
my $awarded=0;
$Discussed=0;
my $code='U';
$awarded = $cache->{$name.
"$Version:$problem:resource.".
"$part.awarded"};
$partData{$part.':awarded'} = ($awarded) ? $awarded : 0;
$totalAwarded += $awarded;
$tries = $cache->{$name.":$Version:$problem".
":resource.$part.tries"};
$partData{$part.':tries'} = ($tries) ? $tries : 0;
$partData{$part.':wrong'} = $partData{$part.':tries'};
$totalTries += $tries;
my $val = $cache->{$name.":$Version:$problem".
":resource.$part.solved"};
if ($val eq 'correct_by_student') {$code = 'C';}
elsif ($val eq 'correct_by_override') {$code = 'O';}
elsif ($val eq 'incorrect_attempted') {$code = 'I';}
elsif ($val eq 'incorrect_by_override'){$code = 'I';}
elsif ($val eq 'excused') {$code = 'x';}
$partData{$part.':code'}=$code;
if($partData{$part.':wrong'} ne 0 &&
($code eq 'C' || $code eq 'O')) {
$partData{$part.':wrong'}--;
}
}
}
# Loop through all the parts for the current problem in the
# correct order and prepare the output
foreach (split(/\:/,$cache->{$sequence.':'.$problemID.
':parts'})) {
my $Yes = 0;
if($partData{$_.':code'} eq 'C' ||
$partData{$_.':code'} eq 'O') {
$Yes=1;
}
#my $ptr = "$hash{'title_'.$ResId}";
my $ptr = $tempProblemOrder.'&'.$problemID;
if($_ > 1) {
$ptr .= "*(part $_)";
$Dis .= '&';
}
my ($pr_no,$dod)=split('&',$ptr);
my $DoDiff=$DoDiff{$dod};
# $r->print('<br>'.$name.'---'.$ptr.'==='.$DoDiff);
my $Fac = ($partData{$_.':Tries'}) ?
($partData{$_.':awarded'}/$partData{$_.':tries'}) : 0;
my $DisF;
if($Fac > 0 && $Fac < 1) {
$DisF = sprintf( "%.4f", $Fac );
} else {
$DisF = $Fac;
}
if ($Discuss{"$name:$problem"}) {
$TotDiscuss++;
$Discussed=1;
}
my $time = $cache->{"$name:$LatestVersion:$problem:timestamp"};
$Dis .= $tempProblemOrder.'='.$DisF.'+'.$Yes;
$ptr .= '&'.$partData{$_.'.Tries'}.
'&'.$partData{$_.'.Wrongs'}.
'&'.$partData{$_.'.Code'};
push (@$list, $ptr."&$Discussed");
#### if ($DoDiff>0.85) {
$TimeTot += $time;
if ($Yes==1 && $partData{$_.'.Tries'}==1) {
$TotFirst++;
}
my $Acts= $Activity{$name.':'.$problem};
if ($Acts) {
my $Pt=&ProcAct( $Acts, $time );
#my ($spe,$beg) = split(/\+/,$Pt);
my $spe= $Pt;
if ($Yes==1) {$spent_yes += $spe;}
$spent += $spe;
#$Beg += $beg;
# $r->print('<br>'.$name.'---'.$problem.'---'.$spe);
}
$TotalOpend++;
$ProbTot++;
$tempProblemOrder++;
}
}
my $pstr;
if($totalTries) {
my $DisFac = ($totalAwarded/$totalTries);
my $DisFactor = sprintf( "%.4f", $DisFac );
my $TS = sprintf( "%.2f", $spent );
my $TS_yes = sprintf( "%.2f", $spent_yes );
# $DiscFac{$DisFactor}=$Dis;
$pstr=$DisFactor.':'.$name.':'.$ProbTot.':'.$TotalOpend.':'.
$totalTries.':'.$ProbSolved.':'.$TotFirst.':'.
$TS_yes.':'.$TS.':'.$TotDiscuss;
$discriminantFactor{$pstr}=$Dis;
}
}
return (\%discriminantFactor);
}
=pod
sub MySort {
if ( $Pos > 0 ) {
if ($ENV{'form.order'} eq 'Descending') {$b <=> $a;}
else { $a <=> $b; }
}
else {
if ($ENV{'form.order'} eq 'Descending') {$b cmp $a;}
else { $a cmp $b; }
}
}
=cut
sub BuildStatisticsTable {
my ($cache,$discriminantFactor,$list,$headings,$students)=@_;
#6666666
# my $file="/home/httpd/perl/tmp/183d.txt";
# open(OUT, ">$file");
#6666666
&Create_PrgWin();
##777777
## &LoadActivityLog();
## $r->print('<script>popwin.document.popremain.remaining.value="'.
## 'Loading Discussion...";</script>');
## &LoadDoDiffFile();
&LoadDiscussion();
my $p_count = 0;
my $nIndex = 0;
my $dummy;
my $p_val;
my $ResId;
my $NoElements = scalar @$list;
foreach my $sequence (split(':', $cache->{'orderedSequences'})) {
if($cache->{'ProblemStatisticsMap'} ne 'All Maps' &&
$cache->{'ProblemStatisticsMap'} ne $cache->{$sequence.':title'}) {
next;
}
&CreateProblemStatisticsTableHeading($cache->{'DisplayFormat'},
$cache->{$sequence.':source'},
$cache->{$sequence.':title'},
$headings);
##777777
## &Classify($discriminantFactor, $students);
my ($Hid,$pr)=split(/\:/,$mapsort{$_});
my @lpr=split(/\&/,$pr);
for (my $i=1; $i<=$#lpr; $i++) {
my %storestats=();
my ($PrOrd,$Prob,$Tries,$Wrongs,$Code,$Disc)=split(/\&/,$list->[$nIndex]);
my $Temp = $Prob;
my $MxTries = 0;
my $TotalTries = 0;
my $YES = 0;
my $Incorrect = 0;
my $Override = 0;
my $StdNo = 0;
my $DiscNo=0;
my @StdLst;
while ( $PrOrd == $lpr[$i] )
{
$nIndex++;
$StdNo++;
$StdLst[ $StdNo ] = $Tries;
$TotalTries += $Tries;
if ( $MxTries < $Tries ) { $MxTries = $Tries; }
if ( $Code eq 'C' ){ $YES++; }
elsif( $Code eq 'I' ) { $Incorrect++; }
elsif( $Code eq 'O' ) { $Override++; }
elsif( $Code eq 'U' ) { $StdNo--; }
($PrOrd,$Prob,$Tries,$Wrongs,$Code,$Disc)=split(/\&/,$list->[$nIndex]);
}
$p_count++;
my $Dummy;
($ResId,$Dummy)=split(/\*/,$Temp);
$Temp = '<a href="'.$hash{'src_'.$ResId}.
'" target="_blank">'.$hash{'title_'.$ResId}.$Dummy.'</a>';
my $res = &Apache::lonnet::declutter($hash{'src_'.$ResId});
my $urlres=$res;
$ResId=~/(\d+)\.(\d+)/;
my $Map = &Apache::lonnet::declutter( $hash{'map_id_'.$1} );
$urlres=$Map;
$res = '<a href="'.$hash{'src_'.$ResId}.'">'.$res.'</a>';
#$Map = '<a href="'.$Map.'">'.$res.'</a>';
#------------------------ Compute the Average of Tries about one problem
my $Average = ($StdNo) ? $TotalTries/$StdNo : 0;
$storestats{$ENV{'request.course.id'}.'___'.$urlres.'___timestamp'}=time;
$storestats{$ENV{'request.course.id'}.'___'.$urlres.'___stdno'}=$StdNo;
$storestats{$ENV{'request.course.id'}.'___'.$urlres.'___avetries'}=$Average;
#-------------------------------- Compute percentage of Wrong tries
my $Wrong = ( $StdNo ) ? 100 * ( $Incorrect / $StdNo ) : 0;
#-------------------------------- Compute Standard Deviation
my $StdDev = 0;
if ( $StdNo > 1 ) {
for ( my $n = 0; $n < $StdNo; $n++ ) {
my $Dif = $StdLst[ $n ]-$Average;
$StdDev += $Dif*$Dif;
}
$StdDev /= ( $StdNo - 1 );
$StdDev = sqrt( $StdDev );
}
#-------------------------------- Compute Degree of Difficulty
my $DoDiff = 0;
if( $TotalTries > 0 ) {
$DoDiff = 1 - ( ( $YES + $Override ) / $TotalTries );
# $DoDiff = ($TotalTries)/($YES + $Override+ 0.1);
}
$storestats{$ENV{'request.course.id'}.'___'.$urlres.'___difficulty'}=$DoDiff;
#-------------------------------- Compute the Skewness
my $Skewness = 0;
my $Sum = 0;
if ( $StdNo > 0 && $StdDev > 0 ) {
for ( my $n = 0; $n < $StdNo; $n++ ) {
my $Dif = $StdLst[ $n ]-$Average;
$Skewness += $Dif*$Dif*$Dif;
}
$Skewness /= $StdNo;
$Skewness /= $StdDev*$StdDev*$StdDev;
}
#--------------------- Compute the Discrimination Factors
my ($Up1,$Up2)=split(/\:/,':');#jason$DisUp->{$lpr[$i]});
my ($Lw1,$Lw2)=split(/\:/,':');#jason$DisLow->{$lpr[$i]});
my $Dis1 = $Up1 - $Lw1;
my $Dis2 = $Up2 - $Lw2;
my $_D1 = sprintf("%.2f", $Dis1);
my $_D2 = sprintf("%.2f", $Dis2);
#----------------- Some restition in presenting the float numbers
my $Avg = sprintf( "%.2f", $Average );
my $Wrng = sprintf( "%.1f", $Wrong );
my $SD = sprintf( "%.1f", $StdDev );
my $DoD = sprintf( "%.2f", $DoDiff );
my $Sk = sprintf( "%.1f", $Skewness );
my $join = $lpr[$i].'&'.$Temp.'&'.$StdNo.'&'.
$TotalTries.'&'.$MxTries.'&'.$Avg.'&'.
$YES.'&'.$Override.'&'.$Wrng.'&'.$DoD.'&'.
$SD.'&'.$Sk.'&'.$_D1.'&'.$_D2.'&'.
$DiscNo.'&'.$Prob;
$CachData{($p_count-1)}=$join;
#6666666
# $r->print('<br>'.$out.'&'.$DoD);
# print (OUT $out.'@'.$DoD.'&');
#6666666
$urlres=~/^(\w+)\/(\w+)/;
if ($StdNo) {
&Apache::lonnet::put('resevaldata',\%storestats,$1,$2);
}
#-------------------------------- Row of statistical table
&TableRow($cache,$join,$i,($p_count-1));
}
&CloseTable($cache);
}
&Close_PrgWin();
#666666
# close( OUT );
#666666
}
=pod
sub Cache_Statistics {
my ($cache)=@_;
my @list = ();
my $Useful;
my $UnUseful;
# $r->print('<input type="hidden" name="show" value="excel" />'."\n");
my %myHeader = reverse( %Header );
$Pos = $myHeader{$ENV{'form.sort'}};
if ($Pos > 0) {$Pos++;}
my $p_count = 0;
foreach my $key( keys %CachData) {
my @Temp=split(/\&/,$CachData{$key});
if ( $Pos == 0 ) {
($UnUseful,$Useful)=split(/\>/,$Temp[$Pos]);
}
else {
$Useful = $Temp[$Pos];
}
$list[$p_count]=$Useful.'@'.$CachData{$key};
$p_count++;
}
@list = sort MySort (@list);
my $nIndex=0;
if ( $Pos == 0 ) {
foreach (sort keys %mapsort) {
my ($Hid,$pr)=split(/\:/,$mapsort{$_});
&CreateProblemStatisticsTableHeading($cache,1,$Hid);
my @lpr=split(/\&/,$pr);
for (my $i=1; $i<=$#lpr; $i++) {
my($Pre, $Post) = split(/\@/,$list[$nIndex]);
#$r->print('<br>'.$Pre.'---'.$Post);
&TableRow($cache,$Post,$i,$nIndex);
$nIndex++;
}
&CloseTable($cache);
}
}
else {
&CreateProblemStatisticsTableHeading($cache,0);
for ( my $nIndex = 0; $nIndex < $p_count; $nIndex++ ) {
my($Pre, $Post) = split(/\@/,$list[$nIndex]);
&TableRow($cache,$Post,$nIndex,$nIndex);
}
&CloseTable($cache);
}
}
=cut
sub TableRow {
my ($Str,$Idx,$RealIdx)=@_;
my($PrOrd,$Temp,$StdNo,$TotalTries,$MxTries,$Avg,$YES,$Override,
$Wrng,$DoD,$SD,$Sk,$_D1,$_D2,$DiscNo,$Prob)=split(/\&/,$Str);
if ($ENV{'form.showcsv'}) {
my ($ResId,$Dummy)=split(/\*/,$Prob);
my $Ptr = "\n".'<br>'.
"\n".'"'.($RealIdx+1).'",'.
"\n".'"'.$hash{'title_'.$ResId}.$Dummy.'",'.
"\n".'"'.$hash{'src_'.$ResId}.'",'.
"\n".'"'.$StdNo.'",'.
"\n".'"'.$TotalTries.'",'.
"\n".'"'.$MxTries.'",'.
"\n".'"'.$Avg.'",'.
"\n".'"'.$YES.'",'.
"\n".'"'.$Override.'",'.
"\n".'"'.$Wrng.'",'.
"\n".'"'.$DoD.'",'.
"\n".'"'.$SD.'",'.
"\n".'"'.$Sk.'",'.
"\n".'"'.$_D1.'",'.
"\n".'"'.$_D2.'"'.
"\n".'"'.$DiscNo.'"';
$r->print("\n".$Ptr);
}
else{
my $Ptr = "\n".'<tr>'.
"\n".'<td>'.($RealIdx+1).'</td>'.
# "\n".'<td>'.$PrOrd.$Temp.'</td>'.
"\n".'<td>'.$Temp.'</td>'.
"\n".'<td bgcolor='.$color{"yellow"}.'> '.$StdNo.'</td>'.
"\n".'<td bgcolor='.$color{"yellow"}.'>'.$TotalTries.'</td>'.
"\n".'<td bgcolor='.$color{"yellow"}.'>'.$MxTries.'</td>'.
"\n".'<td bgcolor='.$color{"gb"}.'>'.$Avg.'</td>'.
"\n".'<td bgcolor='.$color{"gb"}.'> '.$YES.'</td>'.
"\n".'<td bgcolor='.$color{"gb"}.'> '.$Override.'</td>'.
"\n".'<td bgcolor='.$color{"red"}.'> '.$Wrng.'</td>'.
"\n".'<td bgcolor='.$color{"red"}.'> '.$DoD.'</td>'.
"\n".'<td bgcolor='.$color{"green"}.'> '.$SD.'</td>'.
"\n".'<td bgcolor='.$color{"green"}.'> '.$Sk.'</td>'.
"\n".'<td bgcolor='.$color{"purple"}.'> '.$_D1.'</td>'.
"\n".'<td bgcolor='.$color{"purple"}.'> '.$_D2.'</td>'.
"\n".'<td bgcolor='.$color{"yellow"}.'> '.$DiscNo.'</td>';
$r->print("\n".$Ptr.'</tr>' );
}
$GraphDat{$RealIdx}=$DoD.':'.$Wrng;
}
sub StatusOptions {
my ($cache)=@_;
my $Status = $cache->{'Status'};
my $OpSel1 = '';
my $OpSel2 = '';
my $OpSel3 = '';
if($Status eq 'Any') { $OpSel3 = ' selected'; }
elsif($Status eq 'Expired' ) { $OpSel2 = ' selected'; }
else { $OpSel1 = ' selected'; }
my $Ptr = '';
$Ptr .= '<tr><td align="right"><b>Student Status:</b></td>'."\n";
$Ptr .= '<td align="left"><select name="Status">';
$Ptr .= '<option'.$OpSel1.'>Active</option>'."\n";
$Ptr .= '<option'.$OpSel2.'>Expired</option>'."\n";
$Ptr .= '<option'.$OpSel3.'>Any</option>'."\n";
$Ptr .= '</select></td></tr>'."\n";
return $Ptr;
}
sub AscendOrderOptions {
my ($cache)=@_;
my $order = $cache->{'Ascend'};
my $OpSel1 = '';
my $OpSel2 = '';
if($order eq 'Ascending') {
$OpSel1 = ' selected';
} else {
$OpSel2 = ' selected';
}
my $Ptr = '';
$Ptr .= '<tr><td align="right"><b>Sorting Type:</b></td>'."\n";
$Ptr .= '<td align="left"><select name="Ascend">'."\n";
$Ptr .= '<option'.$OpSel1.'>Ascending</option>'."\n".
'<option'.$OpSel2.'>Descending</option>'."\n";
$Ptr .= '</select></td></tr>'."\n";
return $Ptr;
}
sub ProblemStatisticsButtons {
my ($cache)=@_;
my $Ptr = '<tr><td></td><td align="left">';
$Ptr .= '<input type=submit name="ProblemStatisticsRecalculate" ';
$Ptr .= 'value="Recalculate Statistics"/>'."\n";
$Ptr .= ' ';
$Ptr .= '<input type="submit" name="DoDiffGraph" ';
$Ptr .= 'value="DoDiff Graph" />'."\n";
$Ptr .= ' ';
$Ptr .= '<input type="submit" name="PercentWrongGraph" ';
$Ptr .= 'value="%Wrong Graph" />'."\n";
$Ptr .= ' ';
$Ptr .= '<input type="submit" name="DisplayCSVFormat" ';
if($cache->{'DisplayFormat'} eq 'Display CSV Format') {
$Ptr .= 'value="Display CSV Format" />'."\n";
} else {
$Ptr .= 'value="Display Table Format" />'."\n";
}
$Ptr .= '</td></tr>';
return $Ptr;
}
sub ProblemStatisticsLegend {
my $Ptr = '';
$Ptr = '<table border="0">';
$Ptr .= '<tr><td>';
$Ptr .= '<b>#Stdnts</b>:</td>';
$Ptr .= '<td>Total Number of Students opened the problem.';
$Ptr .= '</td></tr><tr><td>';
$Ptr .= '<b>Tries</b>:</td>';
$Ptr .= '<td>Total Number of Tries for solving the problem.';
$Ptr .= '</td></tr><tr><td>';
$Ptr .= '<b>Mod</b>:</td>';
$Ptr .= '<td>Maximunm Number of Tries for solving the problem.';
$Ptr .= '</td></tr><tr><td>';
$Ptr .= '<b>Mean</b>:</td>';
$Ptr .= '<td>Average Number of the tries. [ Tries / #Stdnts ]';
$Ptr .= '</td></tr><tr><td>';
$Ptr .= '<b>#YES</b>:</td>';
$Ptr .= '<td>Number of students solved the problem correctly.';
$Ptr .= '</td></tr><tr><td>';
$Ptr .= '<b>#yes</b>:</td>';
$Ptr .= '<td>Number of students solved the problem by override.';
$Ptr .= '</td></tr><tr><td>';
$Ptr .= '<b>%Wrng</b>:</td>';
$Ptr .= '<td>Percentage of students tried to solve the problem ';
$Ptr .= 'but still incorrect. [ 100*((#Stdnts-(#YES+#yes))/#Stdnts) ]';
$Ptr .= '</td></tr><tr><td>';
# Kashy formula
# '<b> DoDiff </b>: Degree of Difficulty of the problem.<br>'.
# '[ Tries/(#YES+#yes+0.1) ]<br>'.
#Gerd formula
$Ptr .= '<b>DoDiff</b>:</td>';
$Ptr .= '<td>Degree of Difficulty of the problem. ';
$Ptr .= '[ 1 - ((#YES+#yes) / Tries) ]';
$Ptr .= '</td></tr><tr><td>';
$Ptr .= '<b>S.D.</b>:</td>';
$Ptr .= '<td>Standard Deviation of the tries. ';
$Ptr .= '[ sqrt(sum((Xi - Mean)^2)) / (#Stdnts-1) ';
$Ptr .= 'where Xi denotes every student\'s tries ]';
$Ptr .= '</td></tr><tr><td>';
$Ptr .= '<b>Skew.</b>:</td>';
$Ptr .= '<td>Skewness of the students tries.';
$Ptr .= '[(sqrt( sum((Xi - Mean)^3) / #Stdnts)) / (S.D.^3)]';
$Ptr .= '</td></tr><tr><td>';
$Ptr .= '<b>Dis.F.</b>:</td>';
$Ptr .= '<td>Discrimination Factor: A Standard for evaluating the ';
$Ptr .= 'problem according to a Criterion<br>';
$Ptr .= '<b>[Applied Criterion in %27 Upper Students - ';
$Ptr .= 'Applied the same Criterion in %27 Lower Students]</b><br>';
$Ptr .= '<b>1st Criterion</b> for Sorting the Students: ';
$Ptr .= '<b>Sum of Partial Credit Awarded / Total Number of Tries</b><br>';
$Ptr .= '<b>2nd Criterion</b> for Sorting the Students: ';
$Ptr .= '<b>Total number of Correct Answers / Total Number of Tries</b>';
$Ptr .= '</td>';
$Ptr .= '<td><b>Disc.</b></td>';
$Ptr .= '<td>Number of Students had at least one discussion.';
$Ptr .= '</td></tr></table>';
return $Ptr;
}
#---- END Problem Statistics Web Page ----------------------------------------
#---- Problem Statistics Graph Web Page --------------------------------------
# ------------------------------------------- Prepare data for Graphical chart
sub GetGraphData {
my $ylab = shift;
my $Col;
my $data='';
my $count = 0;
my $Max = 0;
my $cid=$ENV{'request.course.id'};
my $GraphDB = "/home/httpd/perl/tmp/$ENV{'user.name'}".
"_$ENV{'user.domain'}_$cid\_graph.db";
foreach (keys %GraphDat) {delete $GraphDat{$_};}
if (-e "$GraphDB") {
if (tie(%GraphDat,'GDBM_File',"$GraphDB",&GDBM_READER,0640)) {
if ( $ylab eq 'DoDiff Graph' ) {
$ylab = 'Degree-of-Difficulty';
$Col = 0;
}
else {
$ylab = 'Wrong-Percentage';
$Col = 1;
}
foreach (sort NumericSort keys %GraphDat) {
my @Temp=split(/\:/,$GraphDat{$_});
my $inf = $Temp[$Col];
if ( $Max < $inf ) {$Max = $inf;}
$data .= $inf.',';
$count++;
}
if ( $Max > 1 ) {
$Max += (10 - $Max % 10);
$Max = int($Max);
}
else { $Max = 1; }
untie(%GraphDat);
my $Course = $ENV{'course.'.$cid.'.description'};
$Course =~ s/\ /"_"/eg;
$GData=$Course.'&'.'Problems'.'&'.$ylab.'&'.$Max.'&'.$count.'&'.$data;
}
else {
$r->print("Unable to tie hash to db file");
}
}
}
#---- Problem Analysis Web Page ----------------------------------------------
sub IntervalOptions {
my ($cache)=@_;
my $interval = 1;
for(my $n=1; $n<=7; $n++) {
if($cache->{'Interval'} == $n) {
$interval = $n;
}
}
my $Ptr = '<br><b>Select number of intervals</b>'."\n".
'<select name="Interval">'."\n";
for(my $n=1; $n<=7;$ n++) {
$Ptr .= '<option';
if($interval == $n) {
$Ptr .= ' selected';
}
$Ptr .= '>'.$n."</option>"."\n";
}
$Ptr .= '</select>'."\n";
return $Ptr;
}
sub OptionResponseTable {
my ($cache)=@_;
my $Str = '';
$Str .= '<br><b> Option Response Problems in this course:</b>'."\n";
$Str .= '<br><br>'."\n";
$Str .= "<table border=2><tr><th> \# </th><th> Problem Title </th>";
$Str .= '<th> Resource </th><th> Analysis </th></tr>'."\n";
my $number=1;
foreach (split(':::',$cache->{'OptionResponses'})) {
my ($uri,$title,$part,$problem)=split('::',$_);
my $Temp = '<a href="'.$uri.'" target="_blank">'.$title.'</a>';
$Str .= '<tr>';
$Str .= '<td> '.$number.' </td>';
$Str .= '<td bgcolor="'.$color{"green"}.'"> '.$Temp.' </td>';
$Str .= '<td bgcolor="'.$color{"yellow"}.'"> '.$uri.' </td>';
$Str .= '<td><input type="submit" name="Analyze:::'.$uri.':::';
$Str .= $title.':::'.$part.':::'.$problem.'" value="';
$Str .= 'Analyze" /></td></tr>'."\n";
$number++;
}
$Str .= '</table>'."\n";
return $Str;
}
#---- END Problem Analysis Web Page ------------------------------------------
#---- Student Assessment Web Page --------------------------------------------
sub MapOptions {
my ($cache, $page)=@_;
my $Ptr = '<tr>';
$Ptr .= '<td align="right"><b>Select Map</b></td>'."\n";
$Ptr .= '<td align="left"><select name="Maps">'."\n";
my $selected = 0;
foreach my $sequence (split(':',$cache->{'orderedSequences'})) {
$Ptr .= '<option';
if($cache->{$page.'Map'} eq $cache->{$sequence.':title'}) {
$Ptr .= ' selected';
$selected = 1;
}
$Ptr .= '>'.$cache->{$sequence.':title'}.'</option>'."\n";
}
$Ptr .= '<option';
if(!$selected) {
$Ptr .= ' selected';
}
$Ptr .= '>All Maps</option>'."\n";
$Ptr .= '</select></td></tr>'."\n";
return $Ptr;
}
sub StudentOptions {
my ($students, $selectedName)=@_;
my $Ptr ='<tr>';
$Ptr .= '<td align="right"><b>Select Student</b></td>'."\n";
$Ptr .= '<td align="left"><select name="Students">'."\n";
my $selected=0;
foreach (@$students) {
my ($name) = split(':',$_);
$Ptr .= '<option';
if($selectedName eq $name) {
$Ptr .= ' selected';
$selected = 1;
}
$Ptr .= '>'.$name.'</option>'."\n";
}
$Ptr .= '<option';
if(!$selected) {
$Ptr .= ' selected';
}
$Ptr .= '>No Student Selected</option>'."\n";
$Ptr .= '</select></td></tr>'."\n";
return $Ptr;
}
# ------ Create different Student Report
sub StudentReport {
my ($cache, $name)=@_;
my $Str = '';
if($cache->{$name.':error'} =~ /course/) {
my ($username)=split(':',$name);
$Str .= '<b><font color="blue">No course data for student </font>';
$Str .= '<font color="red">'.$username.'.</font></b><br>';
return $Str;
}
$Str .= "<table border=2><tr><th> \# </th><th> Set Title </th>";
$Str .= '<th> Results </th><th> Tries </th></tr>'."\n";
my $codes;
my $attempts;
foreach my $sequence (split(':', $cache->{'orderedSequences'})) {
if($cache->{'StudentAssessmentMap'} ne 'All Maps' &&
$cache->{'StudentAssessmentMap'} ne $cache->{$sequence.':title'}) {
next;
}
$Str .= '<tr><td>'.$sequence.'</td>';
$Str .= '<td>'.$cache->{$sequence.':title'}.'</td>';
$codes = '';
$attempts = '';
foreach my $problemID (split(':', $cache->{$sequence.':problems'})) {
my $problem = $cache->{$problemID.':problem'};
my $LatestVersion = $cache->{$name.':version:'.$problem};
# Output dashes for all the parts of this problem if there
# is no version information about the current problem.
if(!$LatestVersion) {
foreach my $part (split(/\:/,$cache->{$sequence.':'.
$problemID.
':parts'})) {
$codes .= "-,";
$attempts .= "0,";
}
next;
}
my %partData=undef;
# Initialize part data, display skips correctly
# Skip refers to when a student made no submissions on that
# part/problem.
foreach my $part (split(/\:/,$cache->{$sequence.':'.
$problemID.
':parts'})) {
$partData{$part.':tries'}=0;
$partData{$part.':code'}='-';
}
# Looping through all the versions of each part, starting with the
# oldest version. Basically, it gets the most recent
# set of grade data for each part.
for(my $Version=1; $Version<=$LatestVersion; $Version++) {
foreach my $part (split(/\:/,$cache->{$sequence.':'.
$problemID.
':parts'})) {
if(!defined($cache->{$name.":$Version:$problem".
":resource.$part.solved"})) {
# No grade for this submission, so skip
next;
}
my $tries=0;
my $code='U';
$tries = $cache->{$name.":$Version:$problem".
":resource.$part.tries"};
$partData{$part.':tries'}=($tries) ? $tries : 0;
my $val = $cache->{$name.":$Version:$problem".
":resource.$part.solved"};
if ($val eq 'correct_by_student') {$code = 'Y';}
elsif ($val eq 'correct_by_override') {$code = 'y';}
elsif ($val eq 'incorrect_attempted') {$code = 'N';}
elsif ($val eq 'incorrect_by_override'){$code = 'N';}
elsif ($val eq 'excused') {$code = 'x';}
$partData{$part.':code'}=$code;
}
}
# Loop through all the parts for the current problem in the
# correct order and prepare the output
foreach (split(/\:/,$cache->{$sequence.':'.$problemID.
':parts'})) {
$codes .= $partData{$_.':code'}.',';
$attempts .= $partData{$_.':tries'}.',';
}
}
$codes =~ s/,$//;
$attempts =~ s/,$//;
$Str .= '<td>'.$codes.'</td>';
$Str .= '<td>'.$attempts.'</td>';
$Str .= '</tr>'."\n";
}
$Str .= '</table>'."\n";
return $Str;
}
#---- END Student Assessment Web Page ----------------------------------------
#---- Menu Web Page ----------------------------------------------------------
sub Title {
my ($downloadTime)=@_;
my $Ptr = '';
$Ptr .= '<html><head><title>LON-CAPA Statistics</title></head>'."\n";
$Ptr .= '<body bgcolor="#FFFFFF">'."\n";
$Ptr .= '<script>window.focus(); window.width=500;window.height=500;';
$Ptr .= '</script>'."\n";
$Ptr .= '<img align=right src=/adm/lonIcons/lonlogos.gif>'."\n";
$Ptr .= '<h1> Course : "';
$Ptr .= $ENV{'course.'.$ENV{'request.course.id'}.'.description'};
$Ptr .= '"</h1>'."\n";
$Ptr .= '<h3>'.$downloadTime.'</h3>';
return $Ptr;
}
sub CreateMenuForm {
my ($cache)=@_;
my $Ptr = '<table border="0">';
$Ptr .= '<tr><td><input type="submit" name="ProblemStatistics" ';
$Ptr .= 'value="Problem Stats"/>';
$Ptr .= '</td></tr>'."\n";
if(defined($cache->{'OptionResponses'})) {
$Ptr .= '<tr><td><input type="submit" name="ProblemAnalysis" ';
$Ptr .= 'value="Problem Analysis"/>';
$Ptr .= '</td></tr>'."\n";
}
$Ptr .= '<tr><td><input type="submit" name="StudentAssessment" ';
$Ptr .= 'value="Student Assessment"/>';
$Ptr .= '</td></tr>'."\n";
#$Ptr .= '<input type="submit" name="ActivityLog" value="Activity Log"/>';
$Ptr .= '</table>'."\n";
return $Ptr;
}
#---- END Menu Web Page ------------------------------------------------------
#---- HELPER FUNCTIONS -------------------------------------------------------
sub CheckFormElement {
my ($cache, $ENVName, $cacheName, $default)=@_;
if(defined($ENV{'form.'.$ENVName})) {
$cache->{$cacheName} = $ENV{'form.'.$ENVName};
} elsif(!defined($cache->{$cacheName})) {
$cache->{$cacheName} = $default;
}
return;
}
sub ProcessFormData{
my ($cacheDB, $isCached)=@_;
my %cache;
if(tie(%cache,'GDBM_File',$cacheDB,&GDBM_WRCREAT,0640)) {
# Select page to display
if(defined($ENV{'form.ProblemStatistics'}) ||
defined($ENV{'form.ProblemStatisticsRecalculate'}) ||
defined($ENV{'form.DisplayCSVFormat'})) {
$cache{'GoToPage'} = 'ProblemStatistics';
&CheckFormElement(\%cache, 'DisplayCSVFormat',
'DisplayFormat', 'Display Table Format');
&CheckFormElement(\%cache, 'Ascend','ProblemStatisticsAscend',
'Ascending');
&CheckFormElement(\%cache, 'Maps', 'ProblemStatisticsMap',
'All Maps');
} elsif(defined($ENV{'form.ProblemAnalysis'})) {
$cache{'GoToPage'} = 'ProblemAnalysis';
&CheckFormElement(\%cache, 'Interval', 'Interval', '1');
} elsif(defined($ENV{'form.StudentAssessment'}) ||
defined($ENV{'form.CreateStudentAssessment'}) ||
defined($ENV{'form.NextStudent'}) ||
defined($ENV{'form.PreviousStudent'})) {
$cache{'GoToPage'} = 'StudentAssessment';
if(defined($ENV{'form.NextStudent'})) {
$cache{'StudentAssessmentMove'} = 'next';
} elsif(defined($ENV{'form.PreviousStudent'})) {
$cache{'StudentAssessmentMove'} = 'previous';
} else {
$cache{'StudentAssessmentMove'} = 'selected';
}
&CheckFormElement(\%cache, 'Maps', 'StudentAssessmentMap',
'All Maps');
&CheckFormElement(\%cache, 'Students', 'StudentAssessmentStudent',
'No Student Selected');
} elsif(defined($ENV{'form.DoDiffGraph'})) {
$cache{'GoToPage'} = 'DoDiffGraph';
} elsif(defined($ENV{'form.PercentWrongGraph'})) {
$cache{'GoToPage'} = 'PercentWrongGraph';
} elsif(defined($ENV{'form.ActivityLog'})) {
$cache{'GoToPage'} = 'ActivityLog';
} else {
$cache{'GoToPage'} = 'Menu';
}
&CheckFormElement(\%cache, 'Status', 'Status', 'Active');
foreach (keys(%ENV)) {
if(/form\.Analyze:::/) {
$cache{'GoToPage'} = 'Analyze';
my ($uri, $title, $part, $problem);
(undef, $uri, $title, $part, $problem)=split(':::', $_);
$cache{'AnalyzeURI'} = $uri;
$cache{'AnalyzeTitle'} = $title;
$cache{'AnalyzePart'} = $part;
$cache{'AnalyzeProblem'} = $problem;
&CheckFormElement(\%cache, 'Interval', 'Interval', '1');
}
}
}
return;
}
=pod
=item &SortStudents()
Determines which students to display and in which order. Which are
displayed are determined by their status(active/expired). The order
is determined by the sort button pressed (default to username). The
type of sorting is username, lastname, or section.
=over 4
Input: $students, $CacheData
$students: A array pointer to a list of students (username:domain)
$CacheData: A pointer to the hash tied to the cached data
Output: \@order
@order: An ordered list of students (username:domain)
=back
=cut
sub SortStudents {
my ($students,$cache)=@_;
my @sorted1Students=();
foreach (@$students) {
push(@sorted1Students, $_);
}
# my ($end,$start)=split(/\:/,$cache->{$_.':date'});
# my $active=1;
# my $now=time;
# my $Status=$cache->{'form.Status'};
# $Status = ($Status) ? $Status : 'Active';
# if((($end) && $now > $end) && (($Status eq 'Active'))) {
# $active=0;
# }
# if(($Status eq 'Expired') && ($end == 0 || $now < $end)) {
# $active=0;
# }
# if($active) {
# push(@sorted1Students, $_);
# }
# }
my $Pos = $cache->{'form.ChartSort'};
my %sortData;
if($Pos eq 'Last Name') {
for(my $index=0; $index<scalar @sorted1Students; $index++) {
$sortData{$cache->{$sorted1Students[$index].':fullname'}}=
$sorted1Students[$index];
}
} elsif($Pos eq 'Section') {
for(my $index=0; $index<scalar @sorted1Students; $index++) {
$sortData{$cache->{$sorted1Students[$index].':section'}.
$sorted1Students[$index]}=$sorted1Students[$index];
}
} else {
# Sort by user name
for(my $index=0; $index<scalar @sorted1Students; $index++) {
$sortData{$sorted1Students[$index]}=$sorted1Students[$index];
}
}
my @order = ();
foreach my $key (sort(keys(%sortData))) {
push (@order,$sortData{$key});
}
return \@order;
}
sub PrepareData {
my ($c, $cacheDB)=@_;
# Test for access to the cache data
my $isCached=0;
my $courseID=$ENV{'request.course.id'};
my $isRecalculate=0;
if(defined($ENV{'form.ProblemStatisticsRecalculate'}) ||
defined($ENV{'form.ChartRecalculate'})) {
$isRecalculate=1;
}
$isRecalculate=1;
$isCached=&Apache::loncoursedata::TestCacheData($cacheDB, $isRecalculate);
if($isCached < 0) {
return "Unable to tie hash to db file.";
}
&ProcessFormData($cacheDB, $isCached);
# Download class list information if not using cached data
my %cache;
my @students=();
if(!$isCached) {
unless(tie(%cache,'GDBM_File',$cacheDB,&GDBM_WRCREAT,0640)) {
return "Unable to tie hash to db file.";
}
my $processTopResourceMapReturn=
&Apache::loncoursedata::ProcessTopResourceMap(\%cache, $c);
if($processTopResourceMapReturn ne 'OK') {
untie(%cache);
return $processTopResourceMapReturn;
}
if($c->aborted()) {
untie(%cache);
return 'aborted';
}
my $classlist=&Apache::loncoursedata::DownloadStudentNamePIDSection(
$courseID,
$c);
my ($checkForError)=keys(%$classlist);
if($checkForError =~ /^(con_lost|error|no_such_host)/i ||
defined($classlist->{'error'})) {
untie(%cache);
return "Error getting student data.";
}
if($c->aborted()) {
untie(%cache);
return 'aborted';
}
# Active is a temporary solution, remember to change
@students=&Apache::loncoursedata::ProcessClassList(\%cache,
$classlist,
$courseID,
'Active', $c);
if($c->aborted()) {
untie(%cache);
return 'aborted';
}
untie(%cache);
} else {
if(!$c->aborted() && tie(%cache,'GDBM_File',$cacheDB,
&GDBM_READER,0640)) {
@students=split(/:::/,$cache{'NamesOfStudents'});
} else {
return 'aborted';
}
}
return ('OK', $isCached, \@students);
}
# Create progress
sub Create_PrgWin {
$r->print(<<ENDPOP);
<script>
popwin=open('','popwin','width=400,height=100');
popwin.document.writeln('<html><body bgcolor="#88DDFF">'+
'<title>LON-CAPA Statistics</title>'+
'<h4>Computation Progress</h4>'+
'<form name=popremain>'+
'<input type=text size=35 name=remaining value=Starting></form>'+
'</body></html>');
popwin.document.close();
</script>
ENDPOP
$r->rflush();
}
# update progress
sub Update_PrgWin {
my ($totalStudents,$index,$name)=@_;
$r->print('<script>popwin.document.popremain.remaining.value="'.
'Computing '.$index.'/'.$totalStudents.': '.
$name.'";</script>');
$r->rflush();
}
# close Progress Line
sub Close_PrgWin {
$r->print('<script>popwin.close()</script>');
$r->rflush();
}
# For loading the colored table for display or un-colored for print
sub setbgcolor {
my $PrintTable=shift;
undef %color;
if ($PrintTable){
$color{"gb"}="#FFFFFF";
$color{"red"}="#FFFFFF";
$color{"yellow"}="#FFFFFF";
$color{"green"}="#FFFFFF";
$color{"purple"}="#FFFFFF";
} else {
$color{"gb"}="#DDFFFF";
$color{"red"}="#FFDDDD";
$color{"yellow"}="#EEFFCC";
$color{"green"}="#DDFFDD";
$color{"purple"}="#FFDDFF";
}
return;
}
sub initial {
undef %hash;
undef %CachData;
undef %GraphDat;
undef %ConceptData;
undef $GData;
}
#---- END HELPER FUNCTIONS ---------------------------------------------------
sub BuildProblemStatisticsPage {
my ($cacheDB, $students)=@_;
my %cache;
unless(tie(%cache,'GDBM_File',$cacheDB,&GDBM_READER,0640)) {
$r->print('<html><body>Unable to tie database.</body></html>');
return;
}
my $Ptr = '';
$Ptr .= '<form name="ProblemStatisticsPage" method="post" ';
$Ptr .= 'action="/adm/statistics">'."\n";
$Ptr .= '<table border="0"><tbody>';
$Ptr .= '<tr><td></td><td align="left"><input type="submit" name="Menu" ';
$Ptr .= 'value="Return to Menu" /></td></tr>'."\n";
$r->print($Ptr);
$r->print(&MapOptions(\%cache, 'ProblemStatistics'));
$r->print(&StatusOptions());
$r->print(&AscendOrderOptions());
$r->print(&ProblemStatisticsButtons(\%cache));
$r->print('</table>');
$r->print(&ProblemStatisticsLegend());
# my $discriminantFactor;
# my @list=();
# foreach (@$students) {
# ($discriminantFactor, $list) = &ExtractStudentData(\%cache, $_,
# \@list);
# }
# my ($upper, $lower) = &Discriminant($discriminantFactor);
# my %Header = (0,"Homework Sets Order",1,"#Stdnts",2,"Tries",3,"Mod",
# 4,"Mean",5,"#YES",6,"#yes",7,"%Wrng",8,"DoDiff",
# 9,"S.D.",10,"Skew.",11,"D.F.1st",12,"D.F.2nd", 13, "Disc.");
# &BuildStatisticsTable(\%cache, $discriminantFactor, \@list, \%Header,
# $students);
$r->print('</form>');
untie(%cache);
return;
}
sub BuildDiffGraph {
my ($courseID)=@_;
my $graphData = &GetGraphData('DiffGraph', $courseID);
$r->print('<IMG src="/cgi-bin/graph.gif?'.$graphData.'" />');
return;
}
sub BuildWrongGraph {
my ($courseID)=@_;
my $graphData = &GetGraphData('WrongGraph', $courseID);
$r->print('<IMG src="/cgi-bin/graph.gif?'.$graphData.'" />');
return;
}
sub BuildAnalyzePage {
my ($cacheDB, $students, $courseID)=@_;
my %cache;
unless(tie(%cache,'GDBM_File',$cacheDB,&GDBM_READER,0640)) {
$r->print('<html><body>Unable to tie database.</body></html>');
return;
}
&ShowOpGraph(\%cache, $students, $courseID);
untie(%cache);
return;
}
sub BuildProblemAnalysisPage {
my ($cacheDB)=@_;
my %cache;
unless(tie(%cache,'GDBM_File',$cacheDB,&GDBM_READER,0640)) {
$r->print('<html><body>Unable to tie database.</body></html>');
return;
}
$r->print('<form name="ProblemAnalysisPage" method="post" ');
$r->print('action="/adm/statistics">'."\n");
$r->print('<tr><td></td><td align="left"><input type="submit" ');
$r->print('name="Menu" value="Return to Menu" /></td></tr>'."\n");
$r->print(&IntervalOptions());
$r->print(&OptionResponseTable(\%cache));
$r->print('</form>'."\n");
untie(%cache);
return;
}
sub BuildStudentAssessmentPage {
my ($cacheDB, $students, $courseID)=@_;
my %cache;
my $Ptr = '';
$Ptr .= '<form name="StudentAssessmentPage" method="post" ';
$Ptr .= 'action="/adm/statistics">'."\n";
$Ptr .= '<table border="0"><tbody>';
$Ptr .= '<tr><td></td><td align="left"><input type="submit" name="Menu" ';
$Ptr .= 'value="Return to Menu" /></td></tr>'."\n";
$r->print($Ptr);
unless(tie(%cache,'GDBM_File',$cacheDB,&GDBM_READER,0640)) {
$r->print('<html><body>Unable to tie database.</body></html>');
return;
}
my $selectedName = $cache{'StudentAssessmentStudent'};
for(my $index=0; $index<(scalar @$students); $index++) {
my ($username) = split(':', $students->[$index]);
if($username eq $selectedName) {
if($cache{'StudentAssessmentMove'} eq 'next') {
if($index == ((scalar @$students) - 1)) {
($selectedName) = split(':',$students->[0]);
} else {
($selectedName) = split(':',$students->[$index+1]);
}
} elsif($cache{'StudentAssessmentMove'} eq 'previous') {
if($index == 0) {
($selectedName) = split(':',
$students->[(scalar @$students)-1]);
} else {
($selectedName)=split(':',$students->[$index-1]);
}
}
last;
}
}
$r->print(&MapOptions(\%cache, 'StudentAssessment'));
$r->print(&StudentOptions($students, $selectedName));
$Ptr = '<tr><td></td><td align="left">';
$Ptr .= '<input type="submit" name="CreateStudentAssessment" ';
$Ptr .= 'value="Create Student Report" />';
$Ptr .= '   ';
$Ptr .= '<input type="submit" name="PreviousStudent" ';
$Ptr .= 'value="Previous Student" />';
$Ptr .= '   ';
$Ptr .= '<input type="submit" name="NextStudent" ';
$Ptr .= 'value="Next Student" />';
$Ptr .= '   ';
$Ptr .= '</td></tr></tbody></table></form>'."\n";
$r->print($Ptr);
untie(%cache);
if($selectedName eq 'No Student Selected') {
$r->print('<h3><font color=blue>WARNING: ');
$r->print('Please select a student</font></h3>');
return;
}
my $name = '';
foreach (@$students) {
my ($currentName) = split(':',$_);
if($currentName eq $selectedName) {
$name = $_;
last;
}
}
if($name eq '') {
$r->print('<h3><font color=blue>ERROR: Unknown student selected.');
$r->print('</font></h3>');
return;
}
my $courseData =
&Apache::loncoursedata::DownloadStudentCourseInformation($name,
$courseID);
if(tie(%cache,'GDBM_File',$cacheDB,&GDBM_WRCREAT,0640)) {
&Apache::loncoursedata::ProcessStudentData(\%cache,
$courseData, $name);
untie(%cache);
}
unless(tie(%cache,'GDBM_File',$cacheDB,&GDBM_READER,0640)) {
$Ptr .= 'Could not tie database.';
return $Ptr;
}
$r->print(&StudentReport(\%cache, $name));
untie(%cache);
return;
}
sub BuildMenu {
my ($cacheDB)=@_;
my %cache;
unless(tie(%cache,'GDBM_File',$cacheDB,&GDBM_READER,0640)) {
$r->print('<html><body>Unable to tie database.</body></html>');
return;
}
$r->print('<form name="Menu" method="post" action="/adm/statistics" >');
$r->print(&CreateMenuForm(\%cache));
$r->print('</form>'."\n");
untie(%cache);
return;
}
# ================================================================ Main Handler
sub handler {
$r=shift;
&initial();
unless(&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'})) {
$ENV{'user.error.msg'}=
$r->uri.":vgr:0:0:Cannot view grades for complete course";
return HTTP_NOT_ACCEPTABLE;
}
# Set document type for header only
if($r->header_only) {
if ($ENV{'browser.mathml'}) {
$r->content_type('text/xml');
} else {
$r->content_type('text/html');
}
&Apache::loncommon::no_cache($r);
$r->send_http_header;
return OK;
}
unless($ENV{'request.course.fn'}) {
my $requrl=$r->uri;
$ENV{'user.error.msg'}="$requrl:bre:0:0:Course not initialized";
return HTTP_NOT_ACCEPTABLE;
}
$r->content_type('text/html');
$r->send_http_header;
my %cache;
my $courseID=$ENV{'request.course.id'};
my $cacheDB = "/home/httpd/perl/tmp/$ENV{'user.name'}".
"_$ENV{'user.domain'}_$courseID\_statistics.db";
my $c = $r->connection;
my ($returnValue, $isCached, $students) = &PrepareData($c, $cacheDB);
if($returnValue ne 'OK') {
$r->print('<html><body>'.$returnValue."\n".'</body></html>');
return OK;
}
my $downloadTime=0;
my $GoToPage;
if(tie(%cache,'GDBM_File',$cacheDB,&GDBM_READER,0640)) {
$students = &SortStudents($students, \%cache);
if(defined($cache{'time'})) {
$downloadTime=$cache{'time'};
} else {
$downloadTime=localtime();
}
if(!defined($cache{'GoToPage'})) {
$GoToPage = 'Menu';
} else {
$GoToPage = $cache{'GoToPage'};
}
untie(%cache);
} else {
$r->print('<html><body>Unable to tie database.</body></html>');
return OK;
}
&setbgcolor(0);
$r->print(&Title());
if($GoToPage eq 'ActivityLog') {
&Activity();
} elsif($GoToPage eq 'ProblemStatistics') {
&BuildProblemStatisticsPage($cacheDB, $students);
} elsif($GoToPage eq 'ProblemAnalysis') {
&BuildProblemAnalysisPage($cacheDB);
} elsif($GoToPage eq 'StudentAssessment') {
&BuildStudentAssessmentPage($cacheDB, $students, $courseID);
} elsif($GoToPage eq 'Analyze') {
&BuildAnalyzePage($cacheDB, $students, $courseID);
} elsif($GoToPage eq 'DoDiffGraph') {
&BuildDiffGraph($courseID);
} elsif($GoToPage eq 'PercentWrongGraph') {
&BuildWrongGraph($courseID);
} else {
&BuildMenu($cacheDB);
}
$r->print("\n".'</body>'."\n".'</html>');
$r->rflush();
return OK;
}
1;
__END__
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