--- loncom/interface/lonstatistics.pm 2002/03/26 18:11:32 1.14
+++ loncom/interface/lonstatistics.pm 2005/03/01 22:25:59 1.118
@@ -1,7 +1,6 @@
# The LearningOnline Network with CAPA
-# (Publication Handler
#
-# $Id: lonstatistics.pm,v 1.14 2002/03/26 18:11:32 minaeibi Exp $
+# $Id: lonstatistics.pm,v 1.118 2005/03/01 22:25:59 matthew Exp $
#
# Copyright Michigan State University Board of Trustees
#
@@ -26,1270 +25,1017 @@
# http://www.lon-capa.org/
#
# (Navigate problems for statistical reports
-# YEAR=2001
-# 5/05,7/09,7/25/01,8/11,9/13,9/26,10/5,10/9,10/22,10/26 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 Behrouz Minaei
#
###
-package Apache::lonstatistics;
+=pod
+
+=head1 NAME
+
+lonstatistics
+
+=head1 SYNOPSIS
+
+Main handler for statistics and chart.
+
+=over 4
+
+=cut
+
+package Apache::lonstatistics;
use strict;
use Apache::Constants qw(:common :http);
+use vars qw(
+ @FullClasslist
+ @Students
+ @Sections
+ @SelectedSections
+ %StudentData
+ @StudentDataOrder
+ @SelectedStudentData
+ $enrollment_status);
+
use Apache::lonnet();
use Apache::lonhomework;
use Apache::loncommon;
-use HTML::TokeParser;
-use GDBM_File;
+use Apache::loncoursedata;
+use Apache::lonhtmlcommon;
+use Apache::lonmysql;
+use Apache::lonlocal;
+use Time::HiRes;
+#
+# Statistics Packages
+use Apache::lonproblemanalysis();
+use Apache::lonsubmissiontimeanalysis();
+use Apache::loncorrectproblemplot();
+use Apache::lonproblemstatistics();
+use Apache::lonstudentassessment();
+use Apache::lonpercentage;
+use Apache::lonstudentsubmissions();
+use Apache::lonsurveyreports();
-# -------------------------------------------------------------- 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 $OpSelDis1;
-my $OpSelDis2;
-my $OpSel3;
-my $OpSel4;
-my $GData;
-my $cid;
-my $firstres;
-my $lastres;
-my $DiscFlag;
-my $HWN;
-my $P_Order;
-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,"OpResp");
-
-
-#------- 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} ");
- $Sum1=0;
- $Sum2=0;
- $nStud=0;
- }
- return %Proc;
-}
+#######################################################
+#######################################################
+=pod
-#------- 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(" $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);
-}
+=item Package Variables
+
+=item @FullClasslist The full classlist
+
+=item @Students The students we are concerned with for this invocation
+
+=item @Sections The sections available in this class
+
+=item $curr_student The student currently being examined
+
+=item $prev_student The student previous in the classlist
+
+=item $next_student The student next in the classlist
+
+=over
+
+=cut
+
+#######################################################
+#######################################################
+#
+# Classlist variables
+#
+my $curr_student;
+my $prev_student;
+my $next_student;
-
-sub NumericSort {
- $a <=> $b;
+#######################################################
+#######################################################
+
+=pod
+
+=item &clear_classlist_variables()
+
+undef the following package variables:
+
+=over
+
+=item @FullClasslist
+
+=item @Students
+
+=item @Sections
+
+=item @SelectedSections
+
+=item %StudentData
+
+=item @StudentDataOrder
+
+=item @SelectedStudentData
+
+=item $curr_student
+
+=item $prev_student
+
+=item $next_student
+
+=back
+
+=cut
+
+#######################################################
+#######################################################
+sub clear_classlist_variables {
+ undef(@FullClasslist);
+ undef(@Students);
+ undef(@Sections);
+ undef(@SelectedSections);
+ undef(%StudentData);
+ undef(@SelectedStudentData);
+ undef($curr_student);
+ undef($prev_student);
+ undef($next_student);
}
-# ------ Create different Student Report
-sub StudentReport {
- my ($sname,$sdom)=@_;
- if ( $sname eq 'All Students' ) {
- $r->print( '
WARNING:
- Please select a student
' );
- return;
- }
- my %result = &Apache::lonnet::dump($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 $Str = "\n".'
'.
- "\n".'
'.
- "\n".'
#
'.
- "\n".'
Set Title
'.
- "\n".'
Results
'.
- "\n".'
Tries
'.
- "\n".'
';
- my ($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"."
".
- "\n"."
$SetNo
".
- "\n"."
$Set
".
- "\n"."
$PtrCod
".
- "\n"."
$PtrTry
".
- "\n"."
";
- }
- $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'}";
- }
+=pod
+
+=item &PrepareClasslist()
+
+Build up the classlist information. The classlist information is kept in
+the following package variables:
+
+=over
+
+=item @FullClasslist
+
+=item @Students
+
+=item @Sections
+
+=item @SelectedSections
+
+=item %StudentData
+
+=item @SelectedStudentData
+
+=item $curr_student
+
+=item $prev_student
+
+=item $next_student
+
+=back
+
+$curr_student, $prev_student, and $next_student may not be defined, depending
+upon the calling context.
+
+=cut
+
+#######################################################
+#######################################################
+sub PrepareClasslist {
+ my %Sections;
+ &clear_classlist_variables();
+ #
+ # Retrieve the classlist
+ my $cid = $ENV{'request.course.id'};
+ my $cdom = $ENV{'course.'.$cid.'.domain'};
+ my $cnum = $ENV{'course.'.$cid.'.num'};
+ my ($classlist,$field_names) = &Apache::loncoursedata::get_classlist($cid,
+ $cdom,$cnum);
+ if (exists($ENV{'form.Section'})) {
+ if (ref($ENV{'form.Section'})) {
+ @SelectedSections = @{$ENV{'form.Section'}};
+ } elsif ($ENV{'form.Section'} !~ /^\s*$/) {
+ @SelectedSections = ($ENV{'form.Section'});
+ }
+ }
+ @SelectedSections = ('all') if (! @SelectedSections);
+ foreach (@SelectedSections) {
+ if ($_ eq 'all') {
+ @SelectedSections = ('all');
+ }
+ }
+ #
+ # Deal with instructors with restricted section access
+ if ($ENV{'request.course.sec'} !~ /^\s*$/) {
+ @SelectedSections = ($ENV{'request.course.sec'});
+ }
+ #
+ # Set up %StudentData
+ @StudentDataOrder = qw/fullname username domain id section status comments/;
+ foreach my $field (@StudentDataOrder) {
+ $StudentData{$field}->{'title'} = &mt($field);
+ $StudentData{$field}->{'base_width'} = length(&mt($field));
+ $StudentData{$field}->{'width'} =
+ $StudentData{$field}->{'base_width'};
+ }
+ #
+ # get the status requested
+ $enrollment_status = 'Active';
+ $enrollment_status = $ENV{'form.Status'} if (exists($ENV{'form.Status'}));
+ #
+ # Process the classlist
+ while (my ($student,$student_data) = each (%$classlist)) {
+ my $studenthash = ();
+ for (my $i=0; $i< scalar(@$field_names);$i++) {
+ my $field = $field_names->[$i];
+ # Store the data
+ $studenthash->{$field}=$student_data->[$i];
+ # Keep track of the width of the fields
+ next if (! exists($StudentData{$field}));
+ my $length = length($student_data->[$i]);
+ if ($StudentData{$field}->{'width'} < $length) {
+ $StudentData{$field}->{'width'} = $length;
+ }
+ }
+ push (@FullClasslist,$studenthash);
+ #
+ # Build up a list of sections
+ my $section = $studenthash->{'section'};
+ if (! defined($section) || $section =~/^\s*$/ || $section == -1) {
+ $studenthash->{'section'} = 'none';
+ $section = $studenthash->{'section'};
+ }
+ $Sections{$section}++;
+ #
+ # Only put in the list those students we are interested in
+ foreach my $sect (@SelectedSections) {
+ if ( (($sect eq 'all') ||
+ ($section eq $sect)) &&
+ (($studenthash->{'status'} eq $enrollment_status) ||
+ ($enrollment_status eq 'Any'))
+ ){
+ push (@Students,$studenthash);
+ last;
}
- else {
- for(my $n=0; $n<$PartNo; $n++) {
- if ($PtrTry ne '') {$PtrTry .= ',';}
- $PtrTry .= "0";
- $PtrCod .= "-";
- }
- }
}
}
- $Str .= "\n".'
'.
- ' #Stdnts: Total Number of Students opened the problem. '.
- ' Tries : Total Number of Tries for solving the problem. '.
- ' Mod : Maximunm Number of Tries for solving the problem. '.
- ' Mean : Average Number of the tries. [ Tries / #Stdnts ] '.
- ' #YES : Number of students solved the problem correctly. '.
- ' #yes : Number of students solved the problem by override. '.
- ' %Wrng : Percentage of students tried to solve the problem but'.
- ' still incorrect. [ 100*((#Stdnts-(#YES+#yes))/#Stdnts) ] '.
-# ' DoDiff : Degree of Difficulty of the problem. [ Tries/(#YES+#yes+0.1) ] '. Kashy formula
- ' DoDiff : Degree of Difficulty of the problem. [ 1 - ((#YES+#yes) / Tries) ] '. #Gerd formula
- ' S.D. : Standard Deviation of the tries.'.
- '[ sqrt(sum((Xi - Mean)^2)) / (#Stdnts-1)'.
- ' where Xi denotes every student\'s tries ] '.
- ' Skew. : Skewness of the students tries.'.
- ' [ (sqrt( sum((Xi - Mean)^3) / #Stdnts)) / (S.D.^3) ] '.
- ' Dis.F. : Discrimination Factor: A Standard for '.
- 'evaluating the problem according to a Criterion '.
- ' [Applied Criterion in %27 Upper Students - '.
- 'Applied the same Criterion in %27 Lower Students] '.
- ' 1st Criterion for Sorting the Students: '.
- 'Sum of Partial Credit Awarded / Total Number of Tries '.
- ' 2nd Criterion for Sorting the Students: '.
- 'Total number of Correct Answers / Total Number of Tries'.
- '
';
-
- $r->print($Ptr);
- $r->rflush();
-
- if ((-e "$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");
- }
- }
-
-#33333
-# my $c=0;
-# foreach (sort keys %OpResp) {
-# $r->print(' '.$c.$_.' ====== '.$OpResp{$_});
-# my $count=$#students+1;
-# for (my $n=0;$n<1;$n++){
-# my ($sname,$sdom)=$students[$n];
-# my $Prob=$OpResp{$_};
-##my $userview=&Apache::lonnet::ssi($hash{'src_'.$ResId});
-# $r->print(' '.$Prob.$sname.$sdom.$cid.
-# ' '.&Apache::loncommon::get_previous_attempt($Prob,$sname,$sdom,$cid));
-# #$r->print(' '.$Prob.$sname. ' *** '.&Apache::lonnet::ssi($hash{'src_'.$Prob}));
-# }
-# $c++;
-# }
- #$r->print('Total instances of the problems : '.($p_count*($#students+1)));
+#######################################################
+#######################################################
- untie(%CachData);
- untie(%GraphDat);
-}
+=pod
+=item get_students
-# ------------------------------------- Find the section of student in a course
+Returns a list of the selected students
-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;
- }
+=cut
+
+#######################################################
+#######################################################
+sub get_students {
+ if (! @Students) {
+ &PrepareClasslist()
}
- return '-1';
+ return @Students;
}
+#######################################################
+#######################################################
-# ------ Dump the Student's DB file and handling the data for statistics table
+=pod
-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 $Map = &Apache::lonnet::declutter( $hash{'map_id_'.$MapId} );
- 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');
- }
- }
+=item ¤t_student()
- my $Prob = $Map.'___'.$PrbId.'___'.
- &Apache::lonnet::declutter( $hash{'src_'.$ResId} );
- $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 $Key (@keys) {
-#333333333
-# if ($OpResp{$PrOrd}) {
-# if (($Key=~/\.(\w+)\.submission$/)) {
-# my $Resp = $result{"$Version:$Prob:$Key"};
-# $r->print(' '.$Prob.' '.$sname.' '.$PrOrd.' '.$Key.' '.$Resp.'');
-# $r->rflush();
-#
-# my %submission=&Apache::lonnet::str2hash($Resp);
-# my $cb=0;
-# foreach (sort keys %submission) {
-# $r->print(' '.$cb.')'.$_.' ... '.$submission{$_});
-# $cb++;
-# }
-# }
-# }
- if (($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"};
- $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='.$TotalTries.' ');
-}
+Returns a pointer to a hash containing data about the currently
+selected student.
+=cut
-# ------------------------------------------------------------ Build page table
-sub tracetable {
- my ($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(' '.$PartNo.'---'.$P_Order);
- }
- foreach my $K(split(/\,/,&Apache::lonnet::metadata($meta,'packages'))) {
- if ($K=~/^optionresponse\_($Part)\_(\w+)$/) {
- #$r->print(' '.$_.'...'.$P_Order.'---'.$Part);
- $OpResp{$P_Order+1}=$frid;
- }
-
- }
- }
- }
- }
- }
- # }
- } 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(' '.$_.'...'.$P_Order.'---'.$Part);
- $OpResp{$P_Order+1}=$rid;
- }
-
- }
-
- }
- }
- }
- }
- }
- if (defined($hash{'to_'.$rid})) {
- foreach (split(/\,/,$hash{'to_'.$rid})){
- &tracetable($hash{'goesto_'.$_},$beenhere);
- }
- }
- }
+#######################################################
+#######################################################
+sub current_student {
+ return $curr_student;
}
-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; }
- }
+#######################################################
+#######################################################
+
+=pod
+
+=item &previous_student()
+
+Returns a pointer to a hash containing data about the student prior
+in the list of students. Or something.
+
+=cut
+
+#######################################################
+#######################################################
+sub previous_student {
+ return $prev_student;
}
-sub Build_Statistics {
- $r->print(<
- popwin=open('','popwin','width=400,height=100');
- popwin.document.writeln(''+
- 'LON-CAPA Statistics'+
- '
Computation Progress
'+
- ''+
- '');
- popwin.document.close();
-
-ENDPOP
+#######################################################
+#######################################################
- $r->rflush();
-# ---------------------------- Gathering the Data of students' tries
- my $index;
- for ($index=0;$index<=$#students;$index++) {
-#----------- update progress
- $r->print('');
- $r->rflush();
+=pod
- &ExtractStudentData($students[$index]);
- }
+=item &next_student()
-# -------------------- sorting the Data
- $r->print('');
-
- @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);
+Returns a pointer to a hash containing data about the next student
+to be viewed.
- $Temp = ''.$hash{'title_'.$ResId}.$Dummy.'';
-
- my $res = &Apache::lonnet::declutter($hash{'src_'.$ResId});
- my $urlres=$res;
+=cut
- $ResId=~/(\d+)\.(\d+)/;
- my $Map = &Apache::lonnet::declutter( $hash{'map_id_'.$1} );
- $urlres=$Map;
-
- $res = ''.$res.'';
- #$Map = ''.$res.'';
-
-#------------------------ 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 = $PrOrd.'&'.$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 Progress Line
- $r->print('');
- $r->rflush();
+#######################################################
+#######################################################
+sub next_student {
+ return $next_student;
}
-sub Cache_Statistics {
- my @list = ();
- my $Useful;
- my $UnUseful;
- my %myHeader = reverse( %Header );
- $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(' '.$Pre.'---'.$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();
+##############################################
+##############################################
+
+=pod
+
+=item &StudentDataSelect($elementname,$status,$numvisible,$selected)
+
+Returns html for a selection box allowing the user to choose one (or more)
+of the fields of student data available (fullname, username, id, section, etc)
+
+=over 4
+
+=item $elementname The name of the HTML form element
+
+=item $status 'multiple' or 'single' selection box
+
+=item $numvisible The number of options to be visible
+
+=back
+
+=cut
+
+##############################################
+##############################################
+sub StudentDataSelect {
+ my ($elementname,$status,$numvisible)=@_;
+ if ($numvisible < 1) {
+ return;
+ }
+ #
+ # Build the form element
+ my $Str = "\n";
+ $Str .= '\n";
+ return $Str;
}
-sub TableRow {
- my ($Str,$Idx,$RealIdx)=@_;
- my($PrOrd,$Temp,$StdNo,$TotalTries,$MxTries,$Avg,$YES,$Override,
- $Wrng,$DoD,$SD,$Sk,$_D1,$_D2,$Prob)=split(/\&/,$Str);
- my $Ptr = "\n".'
'.
- "\n".'
'.($RealIdx+1).'
'.
- # "\n".'
'.$PrOrd.$Temp.'
'.
- "\n".'
'.$Temp.'
'.
- "\n".'
'.$StdNo.'
'.
- "\n".'
'.$TotalTries.'
'.
- "\n".'
'.$MxTries.'
'.
- "\n".'
'.$Avg.'
'.
- "\n".'
'.$YES.'
'.
- "\n".'
'.$Override.'
'.
- "\n".'
'.$Wrng.'
'.
- "\n".'
'.$DoD.'
'.
- "\n".'
'.$SD.'
'.
- "\n".'
'.$Sk.'
'.
- "\n".'
'.$_D1.'
'.
- "\n".'
'.$_D2.'
';
-# if( $OpResp{$PrOrd} ) {
-# $Ptr.='
'.''.'
';
-# }
-# else {
-# $Ptr.='
--------
';
-# }
- $r->print("\n".$Ptr.'
' );
- $GraphDat{$RealIdx}=$DoD.':'.$Wrng;
-}
+#######################################################
+#######################################################
+
+=pod
+
+=item &get_selected_maps($elementname)
-# ------------------------------------------- Prepare data for Graphical chart
+Input: Name of the