# The LearningOnline Network with CAPA
# (Publication Handler
#
# $Id: lonstatistics.pm,v 1.19 2002/05/16 01:27:05 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 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 %OpResp;
my %maps;
my %mapsort;
my %section;
my %StuBox;
my %DiscFac;
my %DisUp;
my %DisLow;
my $UpCnt;
my $CurMap;
my $CurSec;
my $CurStu;
my @cols;
my @list;
my @students;
my $p_count;
my $Pos;
my $r;
my $OpSel1;
my $OpSel2;
my $OpSel3;
my $OpSel4;
my $GData;
my $cid;
my $firstres;
my $lastres;
my $DiscFlag;
my $HWN;
my $P_Order;
my %foil_to_concept;
my @Concepts;
my %ConceptData;
my %Header = (0,"Homework Sets Order",1,"#Stdnts",2,"Tries",3,"Mod",
4,"Mean",5,"#YES",6,"#yes",7,"%Wrng",8,"DoDiff",
9,"S.D.",10,"Skew.",11,"D.F.1st",12,"D.F.2nd");
my %Answer = ();
sub InitAnalysis {
my ($rid, $student)=@_;
my ($uname,$udom)=split(/\:/,$student);
$rid=~/(\d+)\.(\d+)/;
my $symb=&Apache::lonnet::declutter($hash{'map_id_'.$1}).'___'.$2.'___'.
&Apache::lonnet::declutter($hash{'src_'.$rid});
my $URI = $hash{'src_'.$rid};
my $Answ=&Apache::lonnet::ssi($URI,('grade_target' => 'analyze',
'grade_username' => $uname,
'grade_domain' => $udom,
'grade_courseid' => $cid,
'grade_symb' => $symb));
# 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 $symb;
}
sub Interval {
my ($rid,$part,$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.$i.false"}=0;
}
}
}
sub ShowOpGraph {
my ($InpStr, $Int_No)=@_;
my ($rid,$part)=split(/\:/,substr($InpStr,8));
$ConceptData{"Interval"}=$Int_No;
#Initialize the option response true answers
my $symb=&InitAnalysis($rid,$students[0]);
#compute the intervals
&Interval($rid,$part,$symb);
my $URI = $hash{'src_'.$rid};
my $Src = $hash{'title_'.$rid};
$Src =~ 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<=$#students;$index++) {
&Update_PrgWin($index);
&OpStatus($rid,$students[$index]);
}
&Close_PrgWin();
$r->print('<br>');
for (my $k=0; $k<$Int_No; $k++ ) {
&DrawGraph($k,$Src);
}
#$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 DrawGraph {
my ($k,$Src)=@_;
my $Max=0;
my @data1;
my @data2;
my $Correct=0;
my $Wrong=0;
# Adjust Data and find the Max
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=#FFFFDD> ".$Concepts[$n]." </td>".
"\n"."<td bgcolor=#DDFFDD> ".$data1[$n]." </td>".
"\n"."<td bgcolor=#FFDDDD> ".$data2[$n]." </td>".
"\n"."</tr>";
}
#$Apache::lonxml::debug=1;
#&Apache::lonhomework::showhash(%ConceptData);
#$Apache::lonxml::debug=0;
# $Str.='<td></td><td><b>From:['.localtime($ConceptData{'Int.$k'}).
# '] To: ['.localtime($ConceptData{'Int.'.($k+1)}).
# "]</b></td><td>$Correct</td><td>$Wrong</td>";#
$Str .= "\n".'</table>';
# $r->print($Str);
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 AnalyzeProblem {
# selecting the number of intervals
my $OpSel='';
my $CurInt = $ENV{'form.interval'};
if ($CurInt eq '') {$CurMap = '1';}
my $Ptr = '<b>Select number of intervals</b>'."\n".
'<select name="interval">'."\n";
for (my $n=1;$n<=7;$n++) {
$Ptr .= '<option';
if ($CurInt eq $n) {$Ptr .= ' selected';}
$Ptr .= '>'.$n."</option>"."\n";
}
$Ptr .= '</select>'."\n";
$r->print( $Ptr );
#the table of option response problems
$r->print('<br><b> Option Response Problems in this course:</b><br><br>');
my $Str = "\n".'<table border=2>'.
"\n".'<tr>'.
"\n".'<th> # </th>'.
"\n".'<th> Problem Title </th>'.
"\n".'<th> Resouse </th>'.
"\n".'<th> Address </th>'.
"\n".'</tr>';
my $P_No=1;
foreach (sort keys %OpResp) {
my ($rid,$part)=split(/\:/,$OpResp{$_});
my $Temp = '<a href="'.$hash{'src_'.$rid}.
'" target="_blank">'.$hash{'title_'.$rid}.'</a>';
$Str .= "\n"."<tr>".
"\n"."<td> $P_No </td>".
"\n"."<td bgcolor=#DDFFDD> ".$Temp." </td>".
"\n"."<td bgcolor=#EEFFCC> ".$hash{'src_'.$rid}." </td>".
"\n"."<td> ".'<input type="submit" name="sort" value="'.'Analyze_'.$rid.'" />'.'</td>'.
"\n"."</tr>";
$P_No++;
}
$Str .= "\n".'</table>';
$Str .= "\n".'</form>';
$r->print($Str);
$r->rflush();
}
sub Decide {
#deciding the true or false answer belongs to each interval
my ($type,$foil,$time)=@_;
my $k=0;
while ($time>$ConceptData{'Int.'.($k+1)} &&
$k<$ConceptData{'Interval'}) {$k++;}
$ConceptData{"$foil_to_concept{$foil}.$k.$type"}++;
}
#restore the student submissions and finding the result
sub OpStatus {
my ($rid,$student)=@_;
my ($uname,$udom)=split(/\:/,$student);
my $code='U';
$rid=~/(\d+)\.(\d+)/;
my $symb=&Apache::lonnet::declutter($hash{'map_id_'.$1}).'___'.$2.'___'.
&Apache::lonnet::declutter($hash{'src_'.$rid});
my %reshash=&Apache::lonnet::restore($symb,$cid,$udom,$uname);
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 );}
}
}
}
}
}
}
}
#------- Processing upperlist and lowerlist according to each problem
sub ProcessDisc {
my @List = @_;
@List = sort (@List);
my $Count = $#List+1;
my $Prb;
my @Dis;
my $Slvd=0;
my $tmp;
my $Sum1=0;
my $Sum2=0;
my $nIdx=0;
my $nStud=0;
my %Proc;
undef %Proc;
while ($nIdx<$Count) {
($Prb,$tmp)=split(/\=/,$List[$nIdx]);
@Dis=split(/\+/,$tmp);
my $Temp = $Prb;
do {
$nIdx++;
$nStud++;
$Sum1 += $Dis[0];
$Sum2 += $Dis[1];
($Prb,$tmp)=split(/\=/,$List[$nIdx]);
@Dis=split(/\+/,$tmp);
} while ( $Prb eq $Temp && $nIdx < $Count );
# $Proc{$Temp}=($Sum1/$nStud).':'.$nStud;
$Proc{$Temp}=($Sum1/$nStud).':'.($Sum2/$nStud);
# $r->print("$nIdx) $Temp --> ($nStud) $Proc{$Temp} <br>");
$Sum1=0;
$Sum2=0;
$nStud=0;
}
return %Proc;
}
#------- Creating Discimination factor
sub Discriminant {
my $Count=0;
foreach (keys(%DiscFac)){
$Count++;
}
$UpCnt = int(0.27*$Count);
my $low=0;
my $up=$Count-$UpCnt;
my @UpList=();
my @LowList=();
$Count=0;
foreach my $key (sort(keys(%DiscFac))){
$Count++;
#$r->print("<br>$Count) $key = $DiscFac{$key}");
if ($low < $UpCnt || $Count > $up) {
$low++;
my $str=$DiscFac{$key};
foreach(split(/\:/,$str)){
if ($_) {
if ($low<$UpCnt){push(@LowList,$_);}
else {push(@UpList,$_);}
}
}
}
}
%DisUp=&ProcessDisc(@UpList);
%DisLow=&ProcessDisc(@LowList);
}
sub NumericSort {
$a <=> $b;
}
# ------ Create different Student Report
sub StudentReport {
my ($sname,$sdom)=@_;
if ( $sname eq 'All Students' ) {
$r->print( '<h3><font color=blue>WARNING:
Please select a student</font></h3>' );
return;
}
my %result = &Apache::lonnet::dump($cid,$sdom,$sname);
my $ResId;
my $PrOrd;
my $Code;
my $Tries;
my $TotalTries = 0;
my $ParCr = 0;
my $Wrongs;
my %TempHash;
my $Version;
my $LatestVersion;
my $PtrTry='';
my $PtrCod='';
my $SetNo=0;
my $Str = "\n".'<table border=2>'.
"\n".'<tr>'.
"\n".'<th> # </th>'.
"\n".'<th> Set Title </th>'.
"\n".'<th> Results </th>'.
"\n".'<th> Tries </th>'.
"\n".'</tr>';
my ($temp)=keys(%result);
unless ($temp=~/^error\:/) {
foreach my $CurCol (@cols) {
if (!$CurCol){
my $Set=&Apache::lonnet::declutter($hash{'map_id_'.$1});
if ( $Set ) {
$SetNo++;
$Str .= "\n"."<tr>".
"\n"."<td> $SetNo </td>".
"\n"."<td> $Set </td>".
"\n"."<td> $PtrCod </td>".
"\n"."<td> $PtrTry</td>".
"\n"."</tr>";
}
$PtrTry='';
$PtrCod='';
next;
}
($PrOrd,$ResId)=split(/\:/,$CurCol);
$ResId=~/(\d+)\.(\d+)/;
my $Map = &Apache::lonnet::declutter( $hash{'map_id_'.$1} );
if ( $CurMap ne 'All Maps' ) {
my ( $ResMap, $NameMap ) = split(/\=/,$CurMap);
if ( $Map ne $ResMap ) { next; }
}
my $meta=$hash{'src_'.$ResId};
my $PartNo = 0;
undef %TempHash;
foreach (split(/\,/,&Apache::lonnet::metadata($meta,'keys'))){
if ($_=~/^stores\_(\w+)\_tries$/) {
my $Part=&Apache::lonnet::metadata($meta,$_.'.part');
if ( $TempHash{"$Part"} eq '' ) {
$TempHash{"$Part"} = $Part;
$TempHash{$PartNo}=$Part;
$TempHash{"$Part.Code"} = '-';
$TempHash{"$Part.PrOrd"} = $PrOrd+$PartNo;
$PartNo++;
}
}
}
my $Prob = $Map.'___'.$2.'___'.
&Apache::lonnet::declutter( $hash{'src_'.$ResId} );
$Code='U';
$Tries = 0;
$Wrongs = 0;
$LatestVersion = $result{"version:$Prob"};
if ( $LatestVersion ) {
for ( my $Version=1; $Version<=$LatestVersion; $Version++ ) {
my $vkeys = $result{"$Version:keys:$Prob"};
my @keys = split(/\:/,$vkeys);
foreach my $Key (@keys) {
if (($Key=~/\.(\w+)\.solved$/) && ($Key!~/^\d+\:/)) {
my $Part = $1;
$Tries = $result{"$Version:$Prob:resource.$Part.tries"};
$TempHash{"$Part.Tries"} = ($Tries) ? $Tries : 0;
$TotalTries += $Tries;
my $Val = $result{"$Version:$Prob:resource.$Part.solved"};
if ( $Val eq 'correct_by_student' )
{ $Wrongs = $Tries - 1; $Code = 'Y'; }
elsif ( $Val eq 'correct_by_override' )
{ $Wrongs = $Tries - 1; $Code = 'y'; }
elsif ( $Val eq 'incorrect_attempted' ||
$Val eq 'incorrect_by_override' )
{ $Wrongs = $Tries; $Code = 'N'; }
$TempHash{"$Part.Code"} = $Code;
$TempHash{"$Part.Wrongs"} = $Wrongs;
}
}
}
for ( my $n = 0; $n < $PartNo; $n++ ) {
my $part = $TempHash{$n};
if ($PtrTry ne '') {$PtrTry .= ',';}
$PtrTry .= "$TempHash{$part.'.Tries'}";
$PtrCod .= "$TempHash{$part.'.Code'}";
}
}
else {
for(my $n=0; $n<$PartNo; $n++) {
if ($PtrTry ne '') {$PtrTry .= ',';}
$PtrTry .= "0";
$PtrCod .= "-";
}
}
}
}
$Str .= "\n".'</table>';
$r->print($Str);
$r->rflush();
}
sub CreateTable {
my ($Hd, $Hid)=@_;
if ($ENV{'form.showcsv'}) {
if ( $Hd == 1 ) {
$r->print('<br>"'.$hash{'title_'.$Hid}.'","'.$hash{'src_'.$Hid}.'"');
}
return;
}
my $ColNo=0;
foreach (keys(%Header)){
$ColNo++;
}
if ( $Hd == 1 ) {
$r->print('<br><a href="'.$hash{'src_'.$Hid}.
'" target="_blank">'.$hash{'title_'.$Hid}.'</a>');
}
my $Result = "\n".'<table border=2>';
$Result .= '<tr><th>P#</th>'."\n";
for ( my $nIdx=0; $nIdx < $ColNo; $nIdx++ ) {
$Result .= '<th>'.'<input type="submit" name="sort" value="'.
$Header{$nIdx}.'" />'.'</th>'."\n";
}
$Result .= "\n".'</tr>'."\n";
$r->print( $Result );
$r->rflush();
}
sub CloseTable {
if ($ENV{'form.showcsv'}) {
return;
}
$r->print("\n".'</table>'."\n");
$r->rflush();
}
# ------------------------------------------- Prepare Statistics Table
sub PreStatTable {
my $CacheDB = "/home/httpd/perl/tmp/$ENV{'user.name'}".
"_$ENV{'user.domain'}_$cid\_statistics.db";
my $GraphDB = "/home/httpd/perl/tmp/$ENV{'user.name'}".
"_$ENV{'user.domain'}_$cid\_graph.db";
my $OpSel11='';
my $OpSel12='';
my $OpSel13='';
my $Status = $ENV{'form.status'};
if ( $Status eq 'Any' ) { $OpSel13='selected'; }
elsif ($Status eq 'Expired' ) { $OpSel12 = 'selected'; }
else { $OpSel11 = 'selected'; }
my $Ptr = '';
$Ptr .= '<br><b> Student Status: </b>'."\n".
'<select name="status">'.
'<option '.$OpSel11.' >Active</option>'."\n".
'<option '.$OpSel12.' >Expired</option>'."\n".
'<option '.$OpSel13.' >Any</option> </select> '."\n";
$Ptr .= ' ';
$Ptr .= '<input type=submit name=sort value="Recalculate Statistics"/>'."\n";
$Ptr .= '<br><b> Sorting Type: </b>'."\n".
'<select name="order"> <option '.$OpSel1.' >Ascending</option>'."\n".
'<option '.$OpSel2.'>Descending</option> </select> '."\n";
$Ptr .= ' ';
$Ptr .= '<input type="submit" name="sort" value="DoDiff Graph" />'."\n";
$Ptr .= ' ';
$Ptr .= '<input type="submit" name="sort" value="%Wrong Graph" />'."\n";
$Ptr .= '<pre>'.
'<b> #Stdnts</b>: Total Number of Students opened the problem.<br>'.
'<b> Tries </b>: Total Number of Tries for solving the problem.<br>'.
'<b> Max </b> : Maximunm Number of Tries for solving the problem.<br>'.
'<b> Avg. </b>: Average Number of the tries. [ Tries / #Stdnts ]<br>'.
'<b> #YES </b>: Number of students solved the problem correctly.<br>'.
'<b> #yes </b>: Number of students solved the problem by override.<br>'.
'<b> %Wrng </b>: Percentage of students tried to solve the problem but'.
' still incorrect. [ 100*((#Stdnts-(#YES+#yes))/#Stdnts) ]<br>'.
# ' DoDiff : Degree of Difficulty of the problem. [ Tries/(#YES+#yes+0.1) ]<br>'. Kashy formula
'<b> DoDiff </b>: Degree of Difficulty of the problem. [ 1 - ((#YES+#yes) / Tries) ]<br>'. #Gerd formula
'<b> S.D. </b> : Standard Deviation of the tries.'.
'[ sqrt(sum((Xi - Avg.)^2)) / (#Stdnts-1)'.
' where Xi denotes every student\'s tries ]<br>'.
'<b> Skew. </b>: Skewness of the students tries.'.
' [ (sqrt( sum((Xi - Avg.)^3) / #Stdnts)) / (S.D.^3) ]<br>'.
'<b> Dis.F. </b>: Discrimination Factor: A Standard for '.
'evaluating the problem according to a Criterion<br>'.
'<b> [Applied Criterion in %27 Upper Students - '.
'Applied the same Criterion in %27 Lower Students]</b><br>'.
'<b> 1st Criterion</b> for Sorting the Students: '.
'<b>Sum of Partial Credit Awarded / Total Number of Tries</b><br>'.
'<b> 2nd Criterion</b> for Sorting the Students: '.
'<b>Total number of Correct Answers / Total Number of Tries</b>'.
'</pre>';
$r->print($Ptr);
$r->print('Output CSV format: <input type=checkbox name=showcsv onClick="submit()"');
if ($ENV{'form.showcsv'}) { $r->print(' checked'); }
$r->print('>');
$r->rflush();
if ((-e "$CacheDB")&&($ENV{'form.sort'} ne 'Recalculate Statistics')) {
if (tie(%CachData,'GDBM_File',"$CacheDB",&GDBM_READER,0640)) {
tie(%GraphDat,'GDBM_File',$GraphDB,&GDBM_WRCREAT,0640);
&Cache_Statistics();
}
else {
$r->print("Unable to tie hash to db file");
}
}
else {
if (tie(%CachData,'GDBM_File',$CacheDB,&GDBM_WRCREAT,0640)) {
tie(%GraphDat,'GDBM_File',$GraphDB,&GDBM_WRCREAT,0640);
foreach (keys %DiscFac) {delete $CachData{$_};}
foreach (keys %CachData) {delete $CachData{$_};}
$DiscFlag=0;
&Build_Statistics();
}
else {
$r->print("Unable to tie hash to db file");
}
}
# $r->print('Total instances of the problems : '.($p_count*($#students+1)));
untie(%CachData);
untie(%GraphDat);
}
# ------------------------------------- Find the section of student in a course
sub usection {
my ($udom,$unam,$courseid,$ActiveFlag)=@_;
$courseid=~s/\_/\//g;
$courseid=~s/^(\w)/\/$1/;
foreach (split(/\&/,&Apache::lonnet::reply('dump:'.
$udom.':'.$unam.':roles',
&Apache::lonnet::homeserver($unam,$udom)))){
my ($key,$value)=split(/\=/,$_);
$key=&Apache::lonnet::unescape($key);
if ($key=~/^$courseid(?:\/)*(\w+)*\_st$/) {
my $section=$1;
if ($key eq $courseid.'_st') { $section=''; }
my ($dummy,$end,$start)=split(/\_/,&Apache::lonnet::unescape($value));
if ( $ActiveFlag ne 'Any' ) {
my $now=time;
my $notactive=0;
if ($start) {
if ($now<$start) { $notactive=1; }
}
if ($end) {
if ($now>$end) { $notactive=1; }
}
if ((($ActiveFlag eq 'Expired') && $notactive == 1) ||
(($ActiveFlag eq 'Active') && $notactive == 0 ) ) {
return $section;
}
else { return '-1'; }
}
return $section;
}
}
return '-1';
}
# ------ Dump the Student's DB file and handling the data for statistics table
sub ExtractStudentData {
my $student=shift;
my ($sname,$sdom) = split( /\:/, $student );
my %result = &Apache::lonnet::dump($cid,$sdom,$sname);
my $ResId;
my $PrOrd;
my $Dis = '';
my $Code;
my $Tries;
my $ParCr;
my $TotalTries = 0;
my $TotalOpend = 0;
my $ProbSolved = 0;
my $ProbTot = 0;
my $TimeTot = 0;
my $TotParCr = 0;
my $Wrongs;
my %TempHash;
my $Version;
my $LatestVersion;
my $SecLimit;
my $MapLimit;
my ($temp)=keys(%result);
unless ($temp=~/^error\:/) {
foreach my $CurCol(@cols) {
($PrOrd,$ResId)=split(/\:/,$CurCol);
if ( !$CurCol ) { next; }
$ResId=~/(\d+)\.(\d+)/;
my $MapId=$1;
my $PrbId=$2;
my $MapOrg = $hash{'map_id_'.$MapId};
my $Map = &Apache::lonnet::declutter($MapOrg);
if ( $CurMap ne 'All Maps' ) {
my ( $ResMap, $NameMap ) = split(/\=/,$CurMap);
if ( $Map ne $ResMap ) { next; }
}
my $meta=$hash{'src_'.$ResId};
my $PartNo = 0;
$Dis .= ':';
undef %TempHash;
foreach (split(/\,/,&Apache::lonnet::metadata($meta,'keys'))) {
if ($_=~/^stores\_(\w+)\_tries$/) {
my $Part=&Apache::lonnet::metadata($meta,$_.'.part');
if ( $TempHash{"$Part"} eq '' ) {
$TempHash{"$Part"} = $Part;
$TempHash{$PartNo}=$Part;
$TempHash{"$Part.Code"} = 'U';
$TempHash{"$Part.PrOrd"} = $PrOrd+$PartNo;
$PartNo++;
}
#my $Part=&Apache::lonnet::metadata($meta,$_.'.part');
}
}
&Apache::lonnet::declutter( $hash{'src_'.$ResId} );
my $URI = $hash{'src_'.$ResId};
my $Prob = $Map.'___'.$PrbId.'___'.
&Apache::lonnet::declutter($URI);
$Code='U';
$Tries = 0;
$ParCr = 0;
$Wrongs = 0;
$LatestVersion = $result{"version:$Prob"};
if ( $LatestVersion ) {
for ( my $Version=1; $Version<=$LatestVersion; $Version++ ) {
my $vkeys = $result{"$Version:keys:$Prob"};
my @keys = split(/\:/,$vkeys);
foreach my $Key (@keys) {
if (($Key=~/\.(\w+)\.solved$/) && ($Key!~/^\d+\:/)) {
my $Part = $1;
$Tries = $result{"$Version:$Prob:resource.$Part.tries"};
$ParCr = $result{"$Version:$Prob:resource.$Part.awarded"};
my $Time = $result{"$Version:$Prob:timestamp"};
$TempHash{"$Part.Time"} = ($Time) ? $Time : 0;
$TempHash{"$Part.Tries"} = ($Tries) ? $Tries : 0;
$TempHash{"$Part.ParCr"} = ($ParCr) ? $ParCr : 0;
$TotalTries += $TempHash{"$Part.Tries"};
$TotParCr += $TempHash{"$Part.ParCr"};
my $Val = $result{"$Version:$Prob:resource.$Part.solved"};
if ( $Val eq 'correct_by_student' )
{ $Wrongs = $Tries - 1; $Code = 'C'; }
elsif ( $Val eq 'correct_by_override' )
{ $Wrongs = $Tries - 1; $Code = 'O'; }
elsif ( $Val eq 'incorrect_attempted' ||
$Val eq 'incorrect_by_override' )
{ $Wrongs = $Tries; $Code = 'I'; }
$TempHash{"$Part.Code"} = $Code;
$TempHash{"$Part.Wrongs"} = $Wrongs;
}
}
}
for ( my $n = 0; $n < $PartNo; $n++ ) {
my $part = $TempHash{$n};
my $Yes = 0;
if ( $TempHash{$part.'.Code'} eq 'C' ||
$TempHash{$part.'.Code'} eq 'O' )
{$ProbSolved++;$Yes=1;}
# my $ptr = "$hash{'title_'.$ResId}";
my $ptr = $TempHash{$part.'.PrOrd'}.'&'.$ResId;
if ( $PartNo > 1 ) {
$ptr .= "*(part $part)";
$Dis .= '&';
}
my $Fac = ($TempHash{"$part.Tries"}) ?
($TempHash{"$part.ParCr"}/$TempHash{"$part.Tries"}) : 0;
my $DisF;
if ( $Fac > 0 && $Fac < 1 ) {
$DisF = sprintf( "%.4f", $Fac );
}
else {$DisF = $Fac;}
# $DisF .= '+'.$TempHash{"$part.Time"};33333333
$TimeTot += $TempHash{"$part.Time"};
$Dis .= $TempHash{$part.'.PrOrd'}.'='.$DisF.'+'.$Yes;
$ptr .= "&$TempHash{$part.'.Tries'}".
"&$TempHash{$part.'.Wrongs'}".
"&$TempHash{$part.'.Code'}";
push (@list, $ptr);
$TotalOpend++;
$ProbTot++;
}
}
#else {
#for(my $n=0; $n<$PartNo; $n++) {
# push (@list, "$TempHash{'0'.'.PrOrd'}.':'.$ResId:0:0:U");
# $ProbTot++;
#}
#}
}
if ( $TotalTries ) {
my $DisFac = ( $TotalTries ) ? ($TotParCr/$TotalTries) : 0;
my $DisFactor = sprintf( "%.4f", $DisFac );
$DiscFac{$DisFactor}=$Dis;
#my $time;
#if ($ProbSolved){
#$time = int(($TimeTot/$ProbSolved)-10000000);
#}
#$DiscFac{($DisFactor.':'.$sname.':'.$ProbTot.':'.$TotalOpend.':'.
# $TotalTries.':'.$ProbSolved.':'.$time)}=$Dis;
}
}
#$r->print($sname.' PrCr= '.$TotParCr.' Slvd= '.$ProbSolved.' Tries='.$TotalTries.'<br>');
}
# ------------------------------------------------------------ Build page table
sub tracetable {
my ($rid,$beenhere)=@_;
my $IsMap=0;
$rid=~/(\d+)\.(\d+)/;
$maps{&Apache::lonnet::declutter($hash{'map_id_'.$1})}='';#$hash{'title_'.$rid};
#$maps{$HWN}=$hash{'title_'.$rid};
unless ($beenhere=~/\&$rid\&/) {
$beenhere.=$rid.'&';
if (defined($hash{'is_map_'.$rid})) {
my $cmap=$hash{'map_type_'.$hash{'map_pc_'.$hash{'src_'.$rid}}};
if ( $cmap eq 'sequence' || $cmap eq 'page' ) {
$cols[$#cols+1]=0;
$P_Order++;
$HWN=$P_Order;
$mapsort{$HWN} = $rid.':';
$IsMap=1;
#$maps{&Apache::lonnet::declutter($hash{'src_'.$rid})}=
# $hash{'title_'.$rid};
}
if ((defined($hash{'map_start_'.$hash{'src_'.$rid}})) &&
(defined($hash{'map_finish_'.$hash{'src_'.$rid}}))) {
my $frid=$hash{'map_finish_'.$hash{'src_'.$rid}};
&tracetable($hash{'map_start_'.$hash{'src_'.$rid}},
'&'.$frid.'&');
$cols[$#cols+1]=($P_Order+1).':'.$frid;
my $meta=$hash{'src_'.$frid};
my $PartNo = 0;
my $Part;
# if ($IsMap==0){
if ($meta) {
if ($meta=~/\.(problem|exam|quiz|assess|survey|form)$/) {
foreach (split(/\,/,&Apache::lonnet::metadata($meta,'keys'))) {
if ($_=~/^stores\_(\w+)\_tries$/) {
$Part=&Apache::lonnet::metadata($meta,$_.'.part');
$P_Order++;
$mapsort{$HWN} .= '&'.$P_Order;
$PartNo++;
#$r->print('<br>'.$PartNo.'---'.$P_Order);
}
foreach my $K(split(/\,/,&Apache::lonnet::metadata($meta,'packages'))) {
if ($K=~/^optionresponse\_($Part)\_(\w+)$/) {
#$r->print('<br>'.$_.'...'.$P_Order.'---'.$Part);
$OpResp{$P_Order}="$frid:$Part";
}
}
}
}
}
}
# }
} else {
$cols[$#cols+1]=($P_Order+1).':'.$rid;
my $meta=$hash{'src_'.$rid};
my $PartNo = 0;
if ($meta) {
if ($meta=~/\.(problem|exam|quiz|assess|survey|form)$/) {
foreach my $Key(split(/\,/,&Apache::lonnet::metadata($meta,'keys'))) {
if ($Key=~/^stores\_(\w+)\_tries$/) {
my $Part=&Apache::lonnet::metadata($meta,$Key.'.part');
$P_Order++;
$mapsort{$HWN} .= '&'.$P_Order;
$PartNo++;
foreach (split(/\,/,&Apache::lonnet::metadata($meta,'packages'))) {
if ($_=~/^optionresponse\_($Part)\_(\w+)$/) {
#$r->print('<br>'.$_.'...'.$P_Order.'---'.$Part);
$OpResp{$P_Order}="$rid:$Part";;
}
}
}
}
}
}
}
if (defined($hash{'to_'.$rid})) {
foreach (split(/\,/,$hash{'to_'.$rid})){
&tracetable($hash{'goesto_'.$_},$beenhere);
}
}
}
}
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; }
}
}
sub Create_PrgWin {
#----------- Create progress
$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();
}
sub Update_PrgWin {
#----------- update progress
my $index = shift;
$r->print('<script>popwin.document.popremain.remaining.value="'.
'Computing '.($index+1).'/'.($#students+1).': '.
$students[$index].'";</script>');
$r->rflush();
}
sub Close_PrgWin {
#--------------------- close Progress Line
$r->print('<script>popwin.close()</script>');
$r->rflush();
}
sub Build_Statistics {
&Create_PrgWin();
# ---------------------------- Gathering the Data of students' tries
for (my $index=0;$index<=$#students;$index++) {
&Update_PrgWin($index);
&ExtractStudentData($students[$index]);
}
# -------------------- sorting the Data
$r->print('<script>popwin.document.popremain.remaining.value="'.
'Calculating Discrimination Factors...";</script>');
@list = sort (@list);
&Discriminant();
$OpSel2='';
$OpSel1='selected';
$p_count = 0;
my $nIdx = 0;
my $dummy;
my $p_val;
my $ResId;
my $NoElements = $#list + 1;
#-------------------------------- loop for data representation
foreach (sort keys %mapsort) {
my ($Hid,$pr)=split(/\:/,$mapsort{$_});
my @lpr=split(/\&/,$pr);
&CreateTable(1,$Hid);
for (my $i=1; $i<=$#lpr; $i++) {
my %storestats=();
my ($PrOrd,$Prob,$Tries,$Wrongs,$Code)=split(/\&/,$list[$nIdx]);
my $Temp = $Prob;
my $MxTries = 0;
my $TotalTries = 0;
my $YES = 0;
my $Incorrect = 0;
my $Override = 0;
my $StdNo = 0;
my @StdLst;
while ( $PrOrd == $lpr[$i] )
{
$nIdx++;
$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)=split(/\&/,$list[$nIdx]);
}
$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,$Up2)=split(/\:/,$DisUp{$lpr[$i]});
my ($Lw1,$Lw2)=split(/\:/,$DisLow{$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.'&'.
$Prob;
$CachData{($p_count-1)}=$join;
$urlres=~/^(\w+)\/(\w+)/;
if ($StdNo) {
&Apache::lonnet::put('resevaldata',\%storestats,$1,$2);
}
#-------------------------------- Row of statistical table
if ( $DiscFlag == 0 ) {
&TableRow($join,$i,($p_count-1));
}
}
&CloseTable();
}
&Close_PrgWin();
}
sub Cache_Statistics {
my @list = ();
my $Useful;
my $UnUseful;
my %myHeader = reverse( %Header );
#&Apache::lonnet::delenv('form_');
#&Apache::lonnet::delenv('test');
$Pos = $myHeader{$ENV{'form.sort'}};
if ($Pos > 0) {$Pos++;}
$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 $nIdx=0;
if ( $Pos == 0 ) {
foreach (sort keys %mapsort) {
my ($Hid,$pr)=split(/\:/,$mapsort{$_});
&CreateTable(1,$Hid);
my @lpr=split(/\&/,$pr);
for (my $i=1; $i<=$#lpr; $i++) {
my($Pre, $Post) = split(/\@/,$list[$nIdx]);
#$r->print('<br>'.$Pre.'---'.$Post);
&TableRow($Post,$i,$nIdx);
$nIdx++;
}
&CloseTable();
}
}
else {
&CreateTable(0);
for ( my $nIdx = 0; $nIdx < $p_count; $nIdx++ ) {
my($Pre, $Post) = split(/\@/,$list[$nIdx]);
&TableRow($Post,$nIdx,$nIdx);
}
&CloseTable();
}
}
sub TableRow {
my ($Str,$Idx,$RealIdx)=@_;
my($PrOrd,$Temp,$StdNo,$TotalTries,$MxTries,$Avg,$YES,$Override,
$Wrng,$DoD,$SD,$Sk,$_D1,$_D2,$Prob)=split(/\&/,$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.'"';
$r->print("\n".$Ptr);
}
else{
my $Ptr = "\n".'<tr>'.
"\n".'<td>'.($RealIdx+1).'</td>'.
# "\n".'<td>'.$PrOrd.$Temp.'</td>'.
"\n".'<td>'.$Temp.'</td>'.
"\n".'<td bgcolor="#EEFFCC"> '.$StdNo.'</td>'.
"\n".'<td bgcolor="#EEFFCC">'.$TotalTries.'</td>'.
"\n".'<td bgcolor="#EEFFCC">'.$MxTries.'</td>'.
"\n".'<td bgcolor="#DDFFFF">'.$Avg.'</td>'.
"\n".'<td bgcolor="#DDFFFF"> '.$YES.'</td>'.
"\n".'<td bgcolor="#DDFFFF"> '.$Override.'</td>'.
"\n".'<td bgcolor="#FFDDDD"> '.$Wrng.'</td>'.
"\n".'<td bgcolor="#FFDDDD">'.$DoD.'</td>'.
"\n".'<td bgcolor="#DDFFDD"> '.$SD.'</td>'.
"\n".'<td bgcolor="#DDFFDD"> '.$Sk.'</td>'.
"\n".'<td bgcolor="#FFDDFF"> '.$_D1.'</td>'.
"\n".'<td bgcolor="#FFDDFF"> '.$_D2.'</td>';
$r->print("\n".$Ptr.'</tr>' );
}
$GraphDat{$RealIdx}=$DoD.':'.$Wrng;
}
# ------------------------------------------- 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");
}
}
}
sub initial {
# --------------------------------- Initialize the global varaibles
undef @students;
undef @cols;
undef %maps;
undef %section;
undef %StuBox;
undef @list;
undef %CachData;
undef %GraphDat;
undef %DiscFac;
undef %OpResp;
undef %ConceptData;
undef $CurMap;
undef $CurSec;
undef $CurStu;
undef $p_count;
undef $Pos;
undef $GData;
$DiscFlag=0;
$P_Order=100000;
$HWN=$P_Order;
}
# my $CacheDB = "/home/httpd/perl/tmp/$ENV{'user.name'}".
# "_$ENV{'user.domain'}_$cid\_classlist.db";
# if (-e "$CacheDB") {
# if (tie(%students,'GDBM_File',"$CacheDB",&GDBM_READER,0640)) {
# &CachClassList();
# }
# else {
# $r->print("Unable to tie hash to db file");
# }
# }
# else {
# if (tie(%students,'GDBM_File',$CacheDB,&GDBM_WRCREAT,0640)) {
# &MakeClassList();
# }
# else {
# $r->print("Unable to tie hash to db file");
# }
# }
# untie(%students);
sub ClassList {
&GetStatus();
$cid=$ENV{'request.course.id'};
my $chome=$ENV{'course.'.$cid.'.home'};
my ($cdom,$cnum)=split(/\_/,$cid);
# ----------------------- Get first and last resource, see if there is anything
$firstres=$hash{'map_start_/res/'.$ENV{'request.course.uri'}};
$lastres=$hash{'map_finish_/res/'.$ENV{'request.course.uri'}};
if (($firstres) && ($lastres)) {
# my %students = &Apache::lonnet::dump('classlist',$cdom,$cnum);
# $Apache::lonxml::debug=1;
# &Apache::lonhomework::showhash(%students);
# $Apache::lonxml::debug=0;
# my $StudNo = 0;
# my $now=time;
# my ($temp)=keys(%students);
# unless ($temp=~/^error\:/) {
# foreach my $KeyPoint(sort keys(%students)) {
my $classlst=&Apache::lonnet::reply('dump:'.$cdom.':'.$cnum.':classlist',$chome);
my $StudNo = 0;
my $now=time;
unless ($classlst=~/^error\:/) {
foreach my $KeyPoint(sort split(/\&/,$classlst)) {
my ($name,$value)=split(/\=/,$KeyPoint);
my ($end,$start)=split(/\:/,&Apache::lonnet::unescape($value));
my $active=1;
my $Status=$ENV{'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) {
my $thisindex=$#students+1;
$name=&Apache::lonnet::unescape($name);
$students[$thisindex]=$name;
my ($sname,$sdom)=split(/\:/,$name);
my $ssec=&usection($sdom,$sname,$cid,$Status);
if ($ssec==-1 || $ssec eq 'adm' ) {next;}
$ssec=($ssec) ? $ssec : '(none)';
#$ssec=(int($ssec)) ? int($ssec) : $ssec;
$section{$ssec}=$ssec;
if ($CurSec eq 'All Sections' || $ssec eq $CurSec) {
$students[$StudNo]=$name;
$StuBox{$sname}=$sdom;
}
$StudNo++;
}
}
}
else {
$r->print('<h1>Could not access course data</h1>');
}
$r->print("Total number of students : ".($#students+1));
$r->rflush();
# --------------- Find all assessments and put them into some linear-like order
&tracetable($firstres,'&'.$lastres.'&');
# my $c=0;
# foreach (sort keys %mapsort) {
# $r->print('<br>'.$c.')'.$_.' ... '.$mapsort{$_});
# $c++;
# }
# my $c=1;
# foreach (sort keys %OpResp) {
# $r->print('<br>'.$c.')'.$_.' ... '.$OpResp{$_}.' ... '.$hash{'src_'.$OpResp{$_}});
# $c++;
# }
}
# ------------------------------------------------------------- End render page
else {
$r->print('<h3>Undefined course sequence</h3>');
}
}
sub ClassListnew {
&GetStatus();
$cid=$ENV{'request.course.id'};
my $chome=$ENV{'course.'.$cid.'.home'};
my ($cdom,$cnum)=split(/\_/,$cid);
# ----------------------- Get first and last resource, see if there is anything
$firstres=$hash{'map_start_/res/'.$ENV{'request.course.uri'}};
$lastres=$hash{'map_finish_/res/'.$ENV{'request.course.uri'}};
if (($firstres) && ($lastres)) {
my %students = &Apache::lonnet::dump('classlist',$cdom,$cnum);
my $StudNo = 0;
my $now=time;
my ($temp)=keys(%students);
unless ($temp=~/^error\:/) {
foreach (sort keys(%students)) {
my ($name,$value)=split(/\=/,$_);
my ($end,$start)=split(/\:/,&Apache::lonnet::unescape($value));
$name=&Apache::lonnet::unescape($name);
my ($sname,$sdom)=split(/\:/,$name);
my $active=1;
my $Status=$ENV{'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) {
my $thisindex=$#students+1;
$name=&Apache::lonnet::unescape($name);
$students[$thisindex]=$name;
my ($sname,$sdom)=split(/\:/,$name);
#my %reply=&Apache::lonnet::idrget($sdom,$sname);
#my $reply=&Apache::lonnet::reply('get:'.$sdom.':'.$sname.
# ':environment:lastname&generation&firstname&middlename',
# &Apache::lonnet::homeserver($sname,$sdom));
my $ssec=&usection($sdom,$sname,$cid,$Status);
# if ($ssec==-1 ) {next;}
if ($ssec==-1 || $ssec eq 'adm' ) {next;}
$ssec=($ssec) ? $ssec : '(none)';
#$ssec=(int($ssec)) ? int($ssec) : $ssec;
$section{$ssec}=$ssec;
if ($CurSec eq 'All Sections' || $ssec eq $CurSec) {
$students[$StudNo]=$name;
$StuBox{$sname}=$sdom;
}
$StudNo++;
}
}
}
else {
$r->print('<h1>Could not access course data</h1>');
}
$r->print("Total number of students : ".($#students+1));
$r->rflush();
# --------------- Find all assessments and put them into some linear-like order
&tracetable($firstres,'&'.$lastres.'&');
}
# ------------------------------------------------------------- End render page
else {
$r->print('<h3>Undefined course sequence</h3>');
}
}
sub Title {
$r->print('<html><head><title>LON-CAPA Statistics</title></head>');
$r->print('<body bgcolor="#FFFFFF">'.
'<script>window.focus(); window.width=500;window.height=500;</script>'.
'<img align=right src=/adm/lonIcons/lonlogos.gif>');
# ---------------------------------------------------------------- Course title
$r->print('<h1> Course : "'.
$ENV{'course.'.$ENV{'request.course.id'}.
'.description'}.'"</h1><h2>'.localtime().'</h2>');
# ------------------------------- This is going to take a while, produce output
$r->rflush();
}
sub CreateForm {
$r->print("\n".'<form name=stat method=post action="/adm/statistics" >');
my $content = $ENV{'form.sort'};
if (!($ENV{'form.showcsv'}) && #|| !($ENV{'csv'})) &&
($content eq '' || $content eq 'Return to Menu')) {
my $Ptr = '<h3>';
$Ptr .= '<input type=submit name=sort value="Problem Stats"/>';
$Ptr .= '<br><br>';
$Ptr .= '<input type=submit name=sort value="Problem Analysis"/>';
$Ptr .= '<br><br>';
$Ptr .= '<input type=submit name=sort value="Student Assessment"/>';
$Ptr .= '</h3>';
$r->print( $Ptr );
}
else {
&ClassList();
if ( $content eq 'Student Assessment' ||
$content eq 'Create Student Report' ) {
&MapSecOptions();
&StudentOptions();
&StudentReport($CurStu,$StuBox{"$CurStu"});
}
elsif ( $content eq 'Problem Analysis' ) {
&AnalyzeProblem();
}
else {
&MapSecOptions();
&PreStatTable();
}
}
}
sub Menu {
&initial();
# $Apache::lonxml::debug=1;
# &Apache::lonhomework::showhash(%ENV);
# $Apache::lonxml::debug=0;
&Title();
my $InpStr = $ENV{'form.sort'};
if ($InpStr=~/^Analyze\_/) {
&ClassList();
&ShowOpGraph($InpStr,$ENV{'form.interval'});
}
elsif ( $InpStr eq 'DoDiff Graph' || $InpStr eq '%Wrong Graph' ) {
&GetGraphData($InpStr);
$r->print('<IMG src="/cgi-bin/graph.gif?'.$GData.'" />');
}
else {
&CreateForm();
$r->print("\n".'</form>');
}
$r->print("\n".'</body>'.
"\n".'</html>');
$r->rflush();
}
sub StudentOptions {
my $OpSel5='';
$CurStu = $ENV{'form.student'};
if ( $CurStu eq '' ) {
$CurStu = 'All Students';
$OpSel5 = 'selected';
}
my $Ptr ='';
# ----------------------------------- Loading the Students Combobox
$Ptr .= '<br><b>Select Student</b>'."\n".
'<select name="student">'."\n".
'<option '.$OpSel5.'>All Students</option>';
foreach my $key ( sort keys %StuBox ) {
$Ptr .= '<option';
if ($CurStu eq $key) {$Ptr .= ' selected';}
$Ptr .= '>'.$key."</option>\n";
}
$Ptr .= '</select>';
$Ptr .= '<br><input type="submit" name="sort" value="Create Student Report" />';
$r->print( $Ptr );
$r->rflush();
}
sub GetStatus {
$OpSel1='';
$OpSel2='';
$OpSel3='';
$OpSel4='';
if ( $ENV{'form.order'} eq 'Descending' ) { $OpSel2='selected'; }
else { $OpSel1 = 'selected'; }
my %myHeader = reverse( %Header );
$Pos = $myHeader{$ENV{'form.sort'}};
if ($Pos == 0) {
$OpSel1 = 'selected';
$ENV{'form.order'}='Ascendig';
}
$CurMap = $ENV{'form.maps'};
if ( $CurMap eq '' ) {
$CurMap = 'All Maps';
$OpSel3 = 'selected';
}
$CurSec = $ENV{'form.section'};
if ( $CurSec eq '' ) {
$CurSec = 'All Sections';
$OpSel4 = 'selected';
}
}
sub MapSecOptions {
# ----------------------------------- Loading the Maps Combobox
my $Ptr = '<br>';
$Ptr .= '<input type="submit" name="sort" value="Return to Menu" />';
$Ptr .= '<br><b> Select Map </b>'."\n".
'<select name="maps">'."\n".
'<option '.$OpSel3.'>All Maps</option>';
foreach my $key ( sort keys %maps ) {
$Ptr .= '<option';
if ($CurMap eq $key) {$Ptr .= ' selected';}
$Ptr .= '>'.$key."</option>\n";
}
$Ptr .= '</select>';
$Ptr .= ' ';
# ----------------------------------- Loading the Sections Combobox
$Ptr .= '<br><b>Select Section</b>'."\n".
'<select name="section">'."\n".
'<option '.$OpSel4.'>All Sections</option>';
foreach my $key ( sort keys %section ) {
$Ptr .= '<option';
if ($CurSec eq $key) {$Ptr .= ' selected';}
$Ptr .= '>'.$key."</option>"."\n";
}
$Ptr .= '</select>'."\n";
$r->print( $Ptr );
$r->rflush();
}
# ================================================================ Main Handler
sub handler {
$r=shift;
if (&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'})) {
# ------------------------------------------- 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');
}
$r->send_http_header;
return OK;
}
my $requrl=$r->uri;
# ----------------------------------------------------------------- Tie db file
undef %hash;
if ($ENV{'request.course.fn'}) {
my $fn=$ENV{'request.course.fn'};
if (-e "$fn.db") {
if (tie(%hash,'GDBM_File',"$fn.db",&GDBM_READER,0640)) {
# ------------------------------------------------------------------- Hash tied
$r->content_type('text/html');
$r->send_http_header;
&Menu();
}
else {
$r->content_type('text/html');
$r->send_http_header;
$r->print('<html><body>Coursemap undefined.</body></html>');
}
# ------------------------------------------------------------------ Untie hash
unless (untie(%hash)) {
&Apache::lonnet::logthis("<font color=blue>WARNING: ".
"Could not untie coursemap $fn (browse).</font>");
}
# -------------------------------------------------------------------- All done
return OK;
# ----------------------------------------------- Errors, hash could no be tied
}
}
else {
$ENV{'user.error.msg'}="$requrl:bre:0:0:Course not initialized";
return HTTP_NOT_ACCEPTABLE;
}
}
else {
$ENV{'user.error.msg'}=
$r->uri.":vgr:0:0:Cannot view grades for complete course";
return HTTP_NOT_ACCEPTABLE;
}
}
1;
__END__
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