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Diff for /loncom/interface/lonstatistics.pm between versions 1.3 and 1.12

version 1.3, 2002/02/06 16:38:04 version 1.12, 2002/03/22 00:18:12
Line 27 Line 27
 #  #
 # (Navigate problems for statistical reports  # (Navigate problems for statistical reports
 # YEAR=2001  # YEAR=2001
 # 5/05/01, 7/09/01, 7/25/01, 8/11/01,9/13/01, 9/26/01 Behrouz Minaei  # 5/05,7/09,7/25/01,8/11,9/13,9/26,10/5,10/9,10/22,10/26 Behrouz Minaei
 # 10/5/01, 10/9/01, 10/22/01, 10/26/01 Behrouz Minaei  # 11/1, 11/4, 11/16, 12/14, 12/16, 12/18,12/20,12/31 Behrouz Minaei
 # 11/1/01, 11/4/01, 11/16/01 Behrouz Minaei  
 # 12/14/01, 12/16/01, 12/18/01,12/20/01,12/31/01 Behrouz Minaei  
 # YEAR=2002  # YEAR=2002
 # 1/22/02,2/1/02 Behrouz Minaei  # 1/22, 2/1, 2/6, 2/25, 3/2, 3/6, 3/17, 3/21 Behrouz Minaei
 ###  ###
   
 package Apache::lonstatistics;   package Apache::lonstatistics; 
Line 41  use strict; Line 39  use strict;
 use Apache::Constants qw(:common :http);  use Apache::Constants qw(:common :http);
 use Apache::lonnet();  use Apache::lonnet();
 use Apache::lonhomework;  use Apache::lonhomework;
   use Apache::loncommon;
 use HTML::TokeParser;  use HTML::TokeParser;
 use GDBM_File;  use GDBM_File;
 #use Benchmark;  
   
 # -------------------------------------------------------------- Module Globals  # -------------------------------------------------------------- Module Globals
 my %hash;  my %hash;
 my %CachData;  my %CachData;
 my %GraphDat;  my %GraphDat;
   my %OpResp;
 my %maps;  my %maps;
 my @mapsort;  my %mapsort;
 my %section;  my %section;
 my %StuBox;  my %StuBox;
 my %DiscFac;  my %DiscFac;
   my %DisUp;
   my %DisLow;
   my $UpCnt;
 my $CurMap;  my $CurMap;
 my $CurSec;  my $CurSec;
 my $CurStu;  my $CurStu;
Line 67  my $OpSel1; Line 69  my $OpSel1;
 my $OpSel2;  my $OpSel2;
 my $OpSelDis1;  my $OpSelDis1;
 my $OpSelDis2;  my $OpSelDis2;
 my $CurDis=0;  
 my $OpSel3;  my $OpSel3;
 my $OpSel4;  my $OpSel4;
 my $GData;  my $GData;
 my $cid;  my $cid;
 my $firstres;  my $firstres;
 my $lastres;  my $lastres;
 my $DiscFlag=0;  my $DiscFlag;
 my $HWN=0;  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} <br>");
    $Sum1=0;
    $Sum2=0;
    $nStud=0;
       }
       return %Proc;
   }
   
 my %Header = (0,"Problem Title",1,"#Stdnts",2,"Tries",3,"Mod",  
               4,"Mean",5,"#YES",6,"#yes",7,"%Wrng",8,"S.D.",  
               9,"Skew.",10,"DoDiff",11,"Map");  
 #             9,"Skew.",10,"DoDiff",11,"Dis.F.",12,"Resourse URL");  
   
   #------- 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 {            sub NumericSort {          
     $a <=> $b;      $a <=> $b;
 }  }
   
 # ------ Create different Student Report   # ------ Create different Student Report 
 sub StudentReport {  sub StudentReport {
   
     my ($sname,$sdom)=@_;      my ($sname,$sdom)=@_;
   
     if ( $sname eq 'All Students' ) {      if ( $sname eq 'All Students' ) {
  $r->print( '<h3><font color=blue>WARNING:    $r->print( '<h3><font color=blue>WARNING: 
                     Please select a student</font></h3>' );                      Please select a student</font></h3>' );
  return;   return;
     }      }
     my $shome=&Apache::lonnet::homeserver( $sname,$sdom );                my $shome=&Apache::lonnet::homeserver($sname,$sdom);          
     my $reply=&Apache::lonnet::reply('dump:'.$sdom.':'.$sname.':'.$cid,$shome );      my $reply=&Apache::lonnet::reply('dump:'.$sdom.':'.$sname.':'.$cid,$shome );
     my %result = ();      my %result = ();
     my $ResId;      my $ResId;
       my $PrOrd;
     my $Code;      my $Code;
     my $Tries;      my $Tries;
     my $TotalTries = 0;      my $TotalTries = 0;
Line 117  sub StudentReport { Line 190  sub StudentReport {
       "\n".'<th> Tries </th>'.        "\n".'<th> Tries </th>'.
       "\n".'</tr>';        "\n".'</tr>';
     unless ($reply=~/^error\:/) {      unless ($reply=~/^error\:/) {
         map {          foreach (split(/\&/,$reply)){
             my ($name,$value)=split(/\=/,&Apache::lonnet::unescape($_));              my ($name,$value)=split(/\=/,&Apache::lonnet::unescape($_));
             $result{$name}=$value;              $result{$name}=$value;
         } split(/\&/,$reply);;          }
         foreach $ResId (@cols) {          foreach my $CurCol (@cols) {
     if ( !$ResId ) {      if (!$CurCol){
  my $Set=&Apache::lonnet::declutter($hash{'map_id_'.$1});   my $Set=&Apache::lonnet::declutter($hash{'map_id_'.$1});
  if ( $Set ) {   if ( $Set ) {
     $SetNo++;      $SetNo++;
Line 137  sub StudentReport { Line 210  sub StudentReport {
  $PtrCod='';   $PtrCod='';
  next;    next; 
     }      }
       ($PrOrd,$ResId)=split(/\:/,$CurCol);
             $ResId=~/(\d+)\.(\d+)/;              $ResId=~/(\d+)\.(\d+)/;
             my $Map = &Apache::lonnet::declutter( $hash{'map_id_'.$1} );              my $Map = &Apache::lonnet::declutter( $hash{'map_id_'.$1} );
             if ( $CurMap ne 'All Maps' ) {              if ( $CurMap ne 'All Maps' ) {
Line 146  sub StudentReport { Line 220  sub StudentReport {
     my $meta=$hash{'src_'.$ResId};      my $meta=$hash{'src_'.$ResId};
     my $PartNo = 0;      my $PartNo = 0;
     undef %TempHash;      undef %TempHash;
     map {      foreach (split(/\,/,&Apache::lonnet::metadata($meta,'keys'))){
  if ($_=~/^stores\_(\d+)\_tries$/) {   if ($_=~/^stores\_(\w+)\_tries$/) {
                     my $Part=&Apache::lonnet::metadata($meta,$_.'.part');                      my $Part=&Apache::lonnet::metadata($meta,$_.'.part');
     if ( $TempHash{"$Part"} eq '' ) {       if ( $TempHash{"$Part"} eq '' ) { 
  $TempHash{"$Part"} = $Part;   $TempHash{"$Part"} = $Part;
  $TempHash{$PartNo}=$Part;   $TempHash{$PartNo}=$Part;
  $TempHash{"$Part.Code"} = '-';     $TempHash{"$Part.Code"} = '-';  
    $TempHash{"$Part.PrOrd"} = $PrOrd+$PartNo;  
  $PartNo++;   $PartNo++;
     }      }
  }   }
             } split(/\,/,&Apache::lonnet::metadata($meta,'keys'));   #if ($_=~/^parameter\_(\w+)\_package$/) {
               }
   
             my $Prob = $Map.'___'.$2.'___'.              my $Prob = $Map.'___'.$2.'___'.
                        &Apache::lonnet::declutter( $hash{'src_'.$ResId} );                         &Apache::lonnet::declutter( $hash{'src_'.$ResId} );
             $Code='U';              $Code='U';
             $Tries = 0;              $Tries = 0;
             $Wrongs = 0;              $Wrongs = 0;
      $LatestVersion = $result{"version:$Prob"};              $LatestVersion = $result{"version:$Prob"};
   
     if ( $LatestVersion ) {      if ( $LatestVersion ) {
  for ( my $Version=1; $Version<=$LatestVersion; $Version++ ) {   for ( my $Version=1; $Version<=$LatestVersion; $Version++ ) {
     my $vkeys = $result{"$Version:keys:$Prob"};      my $vkeys = $result{"$Version:keys:$Prob"};
Line 188  sub StudentReport { Line 263  sub StudentReport {
     $TempHash{"$Part.Wrongs"} = $Wrongs;      $TempHash{"$Part.Wrongs"} = $Wrongs;
  }   }
          }           }
                 }                   }
  for ( my $n = 0; $n < $PartNo; $n++ ) {     for ( my $n = 0; $n < $PartNo; $n++ ) {  
     my $part = $TempHash{$n};      my $part = $TempHash{$n};
     if ($PtrTry ne '') {$PtrTry .= ',';}      if ($PtrTry ne '') {$PtrTry .= ',';}
Line 210  sub StudentReport { Line 285  sub StudentReport {
     $r->rflush();      $r->rflush();
 }  }
   
   sub CreateTable {
       my $ColNo=0;
       foreach (keys(%Header)){ 
    $ColNo++;
       } 
       my ($Hd, $Hid)=@_;
       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 {
       $r->print("\n".'</table>'."\n");
       $r->rflush();
   }
    
 # ------------------------------------------- Prepare Statistics Table  # ------------------------------------------- Prepare Statistics Table
 sub PreStatTable {  sub PreStatTable {
     my $CacheDB = "/home/httpd/perl/tmp/$ENV{'user.name'}".      my $CacheDB = "/home/httpd/perl/tmp/$ENV{'user.name'}".
                   "_$ENV{'user.domain'}_$cid\_statistics.db";                    "_$ENV{'user.domain'}_$cid\_statistics.db";
     my $GraphDB = "/home/httpd/perl/tmp/$ENV{'user.name'}".      my $GraphDB = "/home/httpd/perl/tmp/$ENV{'user.name'}".
                   "_$ENV{'user.domain'}_$cid\_graph.db";                    "_$ENV{'user.domain'}_$cid\_graph.db";
     my $CachDisFac = "/home/httpd/perl/tmp/$ENV{'user.name'}".      my $OpSel11='';
      "_$ENV{'user.domain'}_$cid\_DiscFactor.db";      my $OpSel12='';
     $r->print('<br><input type="submit" name="sort" value="Recalculate Statistics" />');      my $OpSel13='';
       my $Status = $ENV{'form.status'};
       if ( $Status eq 'Any' ) { $OpSel13='selected'; }
       elsif ($Status eq 'Expired' ) { $OpSel12 = 'selected'; }
       else { $OpSel11 = 'selected'; }
   
     my $Ptr = '';      my $Ptr = '';
       $Ptr .= '<br><b> Student Status: &nbsp; </b>'."\n".
               '<select name="status">'. 
               '<option '.$OpSel11.' >Active</option>'."\n".
               '<option '.$OpSel12.' >Expired</option>'."\n".
       '<option '.$OpSel13.' >Any</option> </select> '."\n";
       $Ptr .= '&nbsp;&nbsp;&nbsp;';
       $Ptr .= '<input type=submit name=sort value="Recalculate Statistics"/>'."\n";
   
     $Ptr .= '<br><b> Sorting Type: &nbsp; </b>'."\n".      $Ptr .= '<br><b> Sorting Type: &nbsp; </b>'."\n".
             '<select name="order"> <option '.$OpSel1.' >Ascending</option>'."\n".              '<select name="order"> <option '.$OpSel1.' >Ascending</option>'."\n".
Line 232  sub PreStatTable { Line 343  sub PreStatTable {
     $Ptr .= '<input type="submit" name="sort" value="%Wrong Graph" />'."\n";      $Ptr .= '<input type="submit" name="sort" value="%Wrong Graph" />'."\n";
   
     $Ptr .= '<pre>'.      $Ptr .= '<pre>'.
     '  #Stdnts: Total Number of Students opened the problem.<br>'.       '<b>  #Stdnts</b>: Total Number of Students opened the problem.<br>'. 
     '  Tries  : Total Number of Tries for solving the problem.<br>'.       '<b>  Tries  </b>: Total Number of Tries for solving the problem.<br>'. 
     '  Mod    : Maximunm Number of Tries for solving the problem.<br>'.       '<b>  Mod   </b> : Maximunm Number of Tries for solving the problem.<br>'. 
     '  Mean   : Average Number of the tries. [ Tries / #Stdns ]<br>'.      '<b>  Mean   </b>: Average Number of the tries. [ Tries / #Stdnts ]<br>'.
     '  #YES   : Number of students solved the problem correctly.<br>'.       '<b>  #YES   </b>: Number of students solved the problem correctly.<br>'. 
     '  #yes   : Number of students solved the problem by override.<br>'.      '<b>  #yes   </b>: Number of students solved the problem by override.<br>'.
     '  %Wrng  : Percentage of students tried to solve the problem but'.      '<b>  %Wrng  </b>: Percentage of students tried to solve the problem but'.
     ' still incorrect. [ 100*((#Stdnts-(#YES+#yes))/#Stdnts) ]<br>'.      ' still incorrect. [ 100*((#Stdnts-(#YES+#yes))/#Stdnts) ]<br>'.
     '  S.D.   : Standard Deviation of the tries.'.  #    '  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 - Mean)^2)) / (#Stdnts-1)'.      '[ sqrt(sum((Xi - Mean)^2)) / (#Stdnts-1)'.
     ' where Xi is every student\'s tries ]<br>'.      ' where Xi denotes every student\'s tries ]<br>'.
     '  Skew.  : Skewness of the students tries.'.      '<b>  Skew.  </b>: Skewness of the students tries.'.
     ' [ (sqrt( sum((Xi - Mean)^3) / #Stdnts)) / (S.D.^3) ]<br>'.   ' [ (sqrt( sum((Xi - Mean)^3) / #Stdnts)) / (S.D.^3) ]<br>'.
 #    '  DoDiff : Degree of Difficulty of the problem. [ Tries/(#YES+#yes+0.1) ]<br>'.      '<b>  Dis.F. </b>: Discrimination Factor: A Standard for '.
     '  DoDiff : Degree of Difficulty of the problem. [ 1 - ((#YES+#yes) / Tries) ]<br>'.   'evaluating the problem according to a Criterion<br>'.
 #    '  Dis.F. : Discrimination Factor. [ Sum of Partial Credits Awarded / Total Number of Tries in %27 upper and lower students]</b>'.   '<b>           [Applied Criterion in %27 Upper Students - '.
    'Applied the same Criterion in %27 Lower Students]</b><br>'.
       '<b>           1st </b>Criterion for Sorting the Students: '.
    'Sum of Partial Credit Awarded / Total Number of Tries<br>'.
       '<b>           2nd </b>Criterion for Sorting the Students: '.
    'Total number of Correct Answers / Total Number of Tries'.
             '</pre>';              '</pre>';
   
     $r->print($Ptr);      $r->print($Ptr);
     $r->rflush();      $r->rflush();
         
     my $Result = "\n".'<table border=2>';  
     $Result .= '<tr><th>P#</th>'."\n";  
     for ( my $nIdx=0; $nIdx < 12; $nIdx++ ) {   
  $Result .= '<th>'.'<input type="submit" name="sort" value="'.  
                    $Header{$nIdx}.'" />'.'</th>'."\n";  
     }  
     $Result .= "\n".'</tr>'."\n";      
     $r->print( $Result );  
     $r->rflush();  
   
     if ((-e "$CacheDB")&&($ENV{'form.sort'} ne 'Recalculate Statistics')) {      if ((-e "$CacheDB")&&($ENV{'form.sort'} ne 'Recalculate Statistics')) {
  if (tie(%CachData,'GDBM_File',"$CacheDB",&GDBM_READER,0640)) {   if (tie(%CachData,'GDBM_File',"$CacheDB",&GDBM_READER,0640)) {
Line 274  sub PreStatTable { Line 382  sub PreStatTable {
     }      }
     else {      else {
  if (tie(%CachData,'GDBM_File',$CacheDB,&GDBM_WRCREAT,0640)) {   if (tie(%CachData,'GDBM_File',$CacheDB,&GDBM_WRCREAT,0640)) {
     tie(%DiscFac,'GDBM_File',$CachDisFac,&GDBM_WRCREAT,0640);  
     tie(%GraphDat,'GDBM_File',$GraphDB,&GDBM_WRCREAT,0640);      tie(%GraphDat,'GDBM_File',$GraphDB,&GDBM_WRCREAT,0640);
     foreach (keys %DiscFac) {delete $CachData{$_};}      foreach (keys %DiscFac) {delete $CachData{$_};}
     foreach (keys %CachData) {delete $CachData{$_};}      foreach (keys %CachData) {delete $CachData{$_};}
Line 285  sub PreStatTable { Line 392  sub PreStatTable {
     $r->print("Unable to tie hash to db file");      $r->print("Unable to tie hash to db file");
         }          }
     }      }
   
   #33333
   #    my $c=0;
   #    foreach (sort keys %OpResp) {
   # $r->print('<br>'.$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});
   # $r->print('<br>'.$Prob.$sname.$sdom.$cid.
   #  '<br>'.&Apache::loncommon::get_previous_attempt($Prob,$sname,$sdom,$cid));
   # #$r->print('<br>'.$Prob.$sname. ' *** '.&Apache::lonnet::ssi($hash{'src_'.$Prob})); 
   # }
   # $c++;
   #    }
   
     #$r->print('Total instances of the problems : '.($p_count*($#students+1)));      #$r->print('Total instances of the problems : '.($p_count*($#students+1)));
   
     untie(%CachData);      untie(%CachData);
     untie(%GraphDat);      untie(%GraphDat);
     untie(%DiscFac);  
   
     $r->print("\n".'</table>'."\n");  
     $r->rflush();          
 }  }
   
   
 # ------------------------------------- Find the section of student in a course  # ------------------------------------- Find the section of student in a course
   
 sub usection {  sub usection {
     my ($udom,$unam,$courseid)=@_;      my ($udom,$unam,$courseid,$ActiveFlag)=@_;
     $courseid=~s/\_/\//g;      $courseid=~s/\_/\//g;
     $courseid=~s/^(\w)/\/$1/;      $courseid=~s/^(\w)/\/$1/;
     map {      foreach (split(/\&/,&Apache::lonnet::reply('dump:'.
                $udom.':'.$unam.':roles',
                &Apache::lonnet::homeserver($unam,$udom)))){
         my ($key,$value)=split(/\=/,$_);          my ($key,$value)=split(/\=/,$_);
         $key=&Apache::lonnet::unescape($key);          $key=&Apache::lonnet::unescape($key);
         if ($key=~/^$courseid(?:\/)*(\w+)*\_st$/) {          if ($key=~/^$courseid(?:\/)*(\w+)*\_st$/) {
             my $section=$1;              my $section=$1;
             if ($key eq $courseid.'_st') { $section=''; }              if ($key eq $courseid.'_st') { $section=''; }
     my ($dummy,$end,$start)=split(/\_/,&Apache::lonnet::unescape($value));      my ($dummy,$end,$start)=split(/\_/,&Apache::lonnet::unescape($value));
             $section=($section) ? $section : '(none)';      if ( $ActiveFlag ne 'Any' ) {
             $section=(int($section)) ? int($section) : $section;   my $now=time;
 #            $r->print($unam.'...'.$section.'<br>');   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 $section;
         }          }
     } split(/\&/,&Apache::lonnet::reply('dump:'.$udom.':'.$unam.':roles',      }
                         &Apache::lonnet::homeserver($unam,$udom)));      return '-1';
     return '';  
 }  }
   
   
Line 329  sub ExtractStudentData { Line 462  sub ExtractStudentData {
     my $reply=&Apache::lonnet::reply('dump:'.$sdom.':'.$sname.':'.$coid,$shome );      my $reply=&Apache::lonnet::reply('dump:'.$sdom.':'.$sname.':'.$coid,$shome );
     my %result = ();      my %result = ();
     my $ResId;      my $ResId;
       my $PrOrd;
     my $Dis = '';      my $Dis = '';
     my $Code;      my $Code;
     my $Tries;      my $Tries;
Line 346  sub ExtractStudentData { Line 480  sub ExtractStudentData {
     my $SecLimit;      my $SecLimit;
     my $MapLimit;      my $MapLimit;
     unless ($reply=~/^error\:/) {      unless ($reply=~/^error\:/) {
         map {          foreach (split(/\&/,$reply)) {
             my ($name,$value)=split(/\=/,&Apache::lonnet::unescape($_));              my ($name,$value)=split(/\=/,&Apache::lonnet::unescape($_));
             $result{$name}=$value;              $result{$name}=$value;
 #$r->print($name.'='.$value.'<br>');          }
         } split(/\&/,$reply);          foreach my $CurCol(@cols) {
         foreach $ResId (@cols) {      ($PrOrd,$ResId)=split(/\:/,$CurCol);
     if ( !$ResId ) { next; }      if ( !$CurCol ) { next; }
             $ResId=~/(\d+)\.(\d+)/;              $ResId=~/(\d+)\.(\d+)/;
             my $Map = &Apache::lonnet::declutter( $hash{'map_id_'.$1} );      my $MapId=$1;
       my $PrbId=$2;
               my $Map = &Apache::lonnet::declutter( $hash{'map_id_'.$MapId} );
             if ( $CurMap ne 'All Maps' ) {              if ( $CurMap ne 'All Maps' ) {
  my ( $ResMap, $NameMap ) = split(/\=/,$CurMap);   my ( $ResMap, $NameMap ) = split(/\=/,$CurMap);
  if ( $Map ne $ResMap ) { next; }   if ( $Map ne $ResMap ) { next; }
Line 363  sub ExtractStudentData { Line 499  sub ExtractStudentData {
     my $PartNo = 0;      my $PartNo = 0;
     $Dis .= ':';      $Dis .= ':';
     undef %TempHash;      undef %TempHash;
     map {  
  if ($_=~/^stores\_(\d+)\_tries$/) {      foreach (split(/\,/,&Apache::lonnet::metadata($meta,'keys'))) { 
    if ($_=~/^stores\_(\w+)\_tries$/) {
                     my $Part=&Apache::lonnet::metadata($meta,$_.'.part');                      my $Part=&Apache::lonnet::metadata($meta,$_.'.part');
     if ( $TempHash{"$Part"} eq '' ) {       if ( $TempHash{"$Part"} eq '' ) { 
  $TempHash{"$Part"} = $Part;   $TempHash{"$Part"} = $Part;
  $TempHash{$PartNo}=$Part;   $TempHash{$PartNo}=$Part;
  $TempHash{"$Part.Code"} = 'U';     $TempHash{"$Part.Code"} = 'U';  
    $TempHash{"$Part.PrOrd"} = $PrOrd+$PartNo;
  $PartNo++;   $PartNo++;
     }      }
                       my $Part=&Apache::lonnet::metadata($meta,$_.'.part');
  }   }
             } split(/\,/,&Apache::lonnet::metadata($meta,'keys'));              }
   
             my $Prob = $Map.'___'.$2.'___'.              my $Prob = $Map.'___'.$PrbId.'___'.
                        &Apache::lonnet::declutter( $hash{'src_'.$ResId} );                         &Apache::lonnet::declutter( $hash{'src_'.$ResId} );
       $OpResp{$PrOrd}=$Prob;
             $Code='U';              $Code='U';
             $Tries = 0;              $Tries = 0;
     $ParCr = 0;      $ParCr = 0;
Line 384  sub ExtractStudentData { Line 524  sub ExtractStudentData {
      $LatestVersion = $result{"version:$Prob"};              $LatestVersion = $result{"version:$Prob"};       
   
     if ( $LatestVersion ) {      if ( $LatestVersion ) {
   #333333333
   #my $userview=&Apache::lonnet::ssi($hash{'src_'.$ResId});
   #$r->print('<br>'.$userview); 
   #$r->print('<br>'.$Prob.$sname.$sdom.$coid.'<br>'.&get_student_answers($Prob,$sname,$sdom,$coid)); 
   
  for ( my $Version=1; $Version<=$LatestVersion; $Version++ ) {   for ( my $Version=1; $Version<=$LatestVersion; $Version++ ) {
     my $vkeys = $result{"$Version:keys:$Prob"};      my $vkeys = $result{"$Version:keys:$Prob"};
     my @keys = split(/\:/,$vkeys);      my @keys = split(/\:/,$vkeys);
Line 399  sub ExtractStudentData { Line 544  sub ExtractStudentData {
     $TempHash{"$Part.ParCr"} = ($ParCr) ? $ParCr : 0;              $TempHash{"$Part.ParCr"} = ($ParCr) ? $ParCr : 0;        
     $TotalTries += $TempHash{"$Part.Tries"};      $TotalTries += $TempHash{"$Part.Tries"};
     $TotParCr += $TempHash{"$Part.ParCr"};      $TotParCr += $TempHash{"$Part.ParCr"};
 #$r->print($Version.'---'.$Prob.'==='.$Time.'<br>');  
     my $Val = $result{"$Version:$Prob:resource.$Part.solved"};      my $Val = $result{"$Version:$Prob:resource.$Part.solved"};
     if ( $Val eq 'correct_by_student' )      if ( $Val eq 'correct_by_student' )
                                { $Wrongs = $Tries - 1; $Code = 'C'; }                                  { $Wrongs = $Tries - 1; $Code = 'C'; } 
Line 418  sub ExtractStudentData { Line 562  sub ExtractStudentData {
     my $Yes = 0;      my $Yes = 0;
                     if ( $TempHash{$part.'.Code'} eq 'C' ||                      if ( $TempHash{$part.'.Code'} eq 'C' ||
                          $TempHash{$part.'.Code'} eq 'O'  )                            $TempHash{$part.'.Code'} eq 'O'  ) 
        {$ProbSolved++;$Yes=1;}             {$ProbSolved++;$Yes=1;}
     my $ptr = "$hash{'title_'.$ResId}";  
    #    my $ptr = "$hash{'title_'.$ResId}";
       my $ptr = $TempHash{$part.'.PrOrd'}.'&'.$ResId;
   
     if ( $PartNo > 1 ) {                      if ( $PartNo > 1 ) {                
  $ptr .= " (part $part)";   $ptr .= "*(part $part)";
  $Dis .= ':';   $Dis .= '&';
     }      }
     my $Fac = ($TempHash{"$part.Tries"}) ?       my $Fac = ($TempHash{"$part.Tries"}) ? 
                               ($TempHash{"$part.ParCr"}/$TempHash{"$part.Tries"}) : 0;                                ($TempHash{"$part.ParCr"}/$TempHash{"$part.Tries"}) : 0;
Line 433  sub ExtractStudentData { Line 580  sub ExtractStudentData {
     else {$DisF = $Fac;}      else {$DisF = $Fac;}
 #    $DisF .= '+'.$TempHash{"$part.Time"};  #    $DisF .= '+'.$TempHash{"$part.Time"};
     $TimeTot += $TempHash{"$part.Time"};      $TimeTot += $TempHash{"$part.Time"};
     $Dis .= $ptr.'*'.$ResId.'='.$DisF.'+'.$Yes;      $Dis .= $TempHash{$part.'.PrOrd'}.'='.$DisF.'+'.$Yes;
     $ptr .= "*$ResId:$TempHash{$part.'.Tries'}".      $ptr .= "&$TempHash{$part.'.Tries'}".
             ":$TempHash{$part.'.Wrongs'}".              "&$TempHash{$part.'.Wrongs'}".
                             ":$TempHash{$part.'.Code'}";                                  "&$TempHash{$part.'.Code'}";
 #$r->print($sname.' -- '.$ptr.'--- timestamp='.$TempHash{"$part.Time"}.'<br>');  
     push (@list, $ptr);      push (@list, $ptr);
     $TotalOpend++;      $TotalOpend++;
     $ProbTot++;      $ProbTot++;
  }   }
             }              }
     else {       #else { 
  for(my $n=0; $n<$PartNo; $n++) {   #for(my $n=0; $n<$PartNo; $n++) {
     push (@list, "$hash{'title_'.$ResId}*$ResId:0:0:U");   #    push (@list, "$TempHash{'0'.'.PrOrd'}.':'.$ResId:0:0:U");
     $ProbTot++;    #    $ProbTot++; 
  }   #}
     }      #}
         }          }
  if ( $TotalTries ) {   if ( $TotalTries ) {
     my $DisFac = ( $TotalTries ) ? ($TotParCr/$TotalTries) : 0;      my $DisFac = ( $TotalTries ) ? ($TotParCr/$TotalTries) : 0;
 #    my $DisFactor = int(sprintf( "%.4f", $DisFac ) * 100);  
     my $DisFactor = sprintf( "%.4f", $DisFac );      my $DisFactor = sprintf( "%.4f", $DisFac );
     my $time;      $DiscFac{$DisFactor}=$Dis;
     if ($ProbSolved){      #my $time;
  $time = int(($TimeTot/$ProbSolved)/10000000);      #if ($ProbSolved){
     }   #$time = int(($TimeTot/$ProbSolved)-10000000);
     $DiscFac{($DisFactor.':'.$sname.':'.$ProbTot.':'.$TotalOpend.':'.      #}
                       $TotalTries.':'.$ProbSolved.':'.$time)}=$Dis;      #$DiscFac{($DisFactor.':'.$sname.':'.$ProbTot.':'.$TotalOpend.':'.
 #$r->print($DisFactor.$sname.'<br> --- Dis= '.$Dis.'<br>');              #          $TotalTries.':'.$ProbSolved.':'.$time)}=$Dis;
  }   }
     }      }
     #$r->print($sname.' PrCr= '.$TotParCr.' Slvd= '.$ProbSolved.' Tries='.$TotalTries.'<br>');      #$r->print($sname.' PrCr= '.$TotParCr.' Slvd= '.$ProbSolved.' Tries='.$TotalTries.'<br>');
Line 470  sub ExtractStudentData { Line 615  sub ExtractStudentData {
 # ------------------------------------------------------------ Build page table  # ------------------------------------------------------------ Build page table
 sub tracetable {  sub tracetable {
     my ($rid,$beenhere)=@_;      my ($rid,$beenhere)=@_;
       my $IsMap=0;
     $rid=~/(\d+)\.(\d+)/;      $rid=~/(\d+)\.(\d+)/;
     $maps{&Apache::lonnet::declutter($hash{'map_id_'.$1})}='';#$hash{'title_'.$rid};       $maps{&Apache::lonnet::declutter($hash{'map_id_'.$1})}='';#$hash{'title_'.$rid}; 
       #$maps{$HWN}=$hash{'title_'.$rid}; 
     unless ($beenhere=~/\&$rid\&/) {      unless ($beenhere=~/\&$rid\&/) {
        $beenhere.=$rid.'&';          $beenhere.=$rid.'&'; 
        if (defined($hash{'is_map_'.$rid})) {         if (defined($hash{'is_map_'.$rid})) {
    my $cmap=$hash{'map_type_'.$hash{'map_pc_'.$hash{'src_'.$rid}}};     my $cmap=$hash{'map_type_'.$hash{'map_pc_'.$hash{'src_'.$rid}}};
            if ( $cmap eq 'sequence' || $cmap eq 'page' ) {              if ( $cmap eq 'sequence' || $cmap eq 'page' ) { 
                $cols[$#cols+1]=0;                 $cols[$#cols+1]=0;
        $HWN++;         $P_Order++;
                $mapsort[$HWN]=$rid.$hash{'title_'.$rid};          $HWN=$P_Order;
                  $mapsort{$HWN} = $rid.':';
          $IsMap=1;
    
                #$maps{&Apache::lonnet::declutter($hash{'src_'.$rid})}=                  #$maps{&Apache::lonnet::declutter($hash{'src_'.$rid})}= 
                #      $hash{'title_'.$rid};                  #      $hash{'title_'.$rid}; 
            }             }
            if ((defined($hash{'map_start_'.$hash{'src_'.$rid}})) &&             if ((defined($hash{'map_start_'.$hash{'src_'.$rid}})) &&
                (defined($hash{'map_finish_'.$hash{'src_'.$rid}}))) {                 (defined($hash{'map_finish_'.$hash{'src_'.$rid}}))) {
               my $frid=$hash{'map_finish_'.$hash{'src_'.$rid}};         my $frid=$hash{'map_finish_'.$hash{'src_'.$rid}};
   
                 &tracetable($hash{'map_start_'.$hash{'src_'.$rid}},                 &tracetable($hash{'map_start_'.$hash{'src_'.$rid}},
                 '&'.$frid.'&');     '&'.$frid.'&');
   
               if ($hash{'src_'.$frid}) {         $cols[$#cols+1]=($P_Order+1).':'.$frid;
                  if ($hash{'src_'.$frid}=~        
                                  /\.(problem|exam|quiz|assess|survey|form)$/) {         my $meta=$hash{'src_'.$frid};
      $cols[$#cols+1]=$frid;         my $PartNo = 0;
      $mapsort[$HWN] .= '&'.$frid;         if ($IsMap==0){
                  }                 if ($meta) {
       }     if ($meta=~/\.(problem|exam|quiz|assess|survey|form)$/) {
          foreach (split(/\,/,&Apache::lonnet::metadata($meta,'keys'))) {
      if ($_=~/^stores\_(\w+)\_tries$/) {
          &Apache::lonnet::metadata($meta,$_.'.part');
          $P_Order++;
          $mapsort{$HWN} .= '&'.$P_Order;
          $PartNo++;
          #$r->print('<br>'.$PartNo.'---'.$P_Order);
      }
          }
          foreach (split(/\,/,&Apache::lonnet::metadata($meta,'packages'))) {
      if ($_=~/^optionresponse\_(\w+)\_(\w+)$/) {
   #       $r->print('<br>'.$_.&Apache::lonnet::metadata($meta,$_));
          $r->print('<br>'.$_.'...'.$P_Order);
          $OpResp{$P_Order+1}=$frid;
      } 
          }
      }
                  }
      }
    }     }
        } else {         } else {
           if ($hash{'src_'.$rid}) {     $cols[$#cols+1]=($P_Order+1).':'.$rid;
              if ($hash{'src_'.$rid}=~     my $meta=$hash{'src_'.$rid};
                                  /\.(problem|exam|quiz|assess|survey|form)$/) {     my $PartNo = 0;
          $cols[$#cols+1]=$rid;     if ($meta) {
  $mapsort[$HWN] .= '&'.$rid;         if ($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+1}=$rid;
          } 
      
      }
   
          }
      }
          }
      }       
        }         }
        if (defined($hash{'to_'.$rid})) {         if (defined($hash{'to_'.$rid})) {
           map {            foreach (split(/\,/,$hash{'to_'.$rid})){
               &tracetable($hash{'goesto_'.$_},$beenhere);                &tracetable($hash{'goesto_'.$_},$beenhere);
           } split(/\,/,$hash{'to_'.$rid});            }
        }         }
     }      }
 }  }
   
 sub MySort {            sub MySort {          
     if ( $Pos > 0 && $Pos < 11 ) {      if ( $Pos > 0 ) {
  if ($ENV{'form.order'} eq 'Descending') {$b <=> $a;}   if ($ENV{'form.order'} eq 'Descending') {$b <=> $a;}
  else { $a <=> $b; }   else { $a <=> $b; }
     }      }
Line 528  sub MySort { Line 713  sub MySort {
   
 sub Build_Statistics {  sub Build_Statistics {
     $r->print(<<ENDPOP);      $r->print(<<ENDPOP);
 <script>      <script>
     popwin=open('','popwin','width=400,height=100');      popwin=open('','popwin','width=400,height=100');
     popwin.document.writeln('<html><body bgcolor="#8cee8c">'+      popwin.document.writeln('<html><body bgcolor="#88DDFF">'+
       '<title>LON-CAPA Statistics</title>'+        '<title>LON-CAPA Statistics</title>'+
       '<h4>Computation Progress</h4>'+        '<h4>Computation Progress</h4>'+
       '<form name=popremain>'+        '<form name=popremain>'+
       '<input type=text size=35 name=remaining value=Starting></form>'+        '<input type=text size=35 name=remaining value=Starting></form>'+
       '</body></html>');        '</body></html>');
     popwin.document.close();      popwin.document.close();
 </script>      </script>
 ENDPOP  ENDPOP
   
     $r->rflush();      $r->rflush();
Line 552  ENDPOP Line 737  ENDPOP
   
         &ExtractStudentData($students[$index],$cid);          &ExtractStudentData($students[$index],$cid);
     }      }
 #--------------------- close Progress Line  
     $r->print('<script>popwin.close()</script>');  
     $r->rflush();   
 # -------------------- sorting the Data  # -------------------- sorting the Data
     @list = sort(@list);      $r->print('<script>popwin.document.popremain.remaining.value="'.
                 'Calculating Discrimination Factors...";</script>');
   
       @list = sort (@list);
   
   
       &Discriminant();
   
     $OpSel2='';      $OpSel2='';
     $OpSel1='selected';      $OpSel1='selected';
           
Line 567  ENDPOP Line 757  ENDPOP
     my $ResId;      my $ResId;
     my $NoElements = $#list + 1;      my $NoElements = $#list + 1;
 #-------------------------------- loop for data representation  #-------------------------------- loop for data representation
     while ( $nIdx < $NoElements ) {      foreach (sort keys %mapsort) {
         my %storestats=();   my ($Hid,$pr)=split(/\:/,$mapsort{$_});
  my ($Prob,$Tries,$Wrongs,$Code)=split(/\:/,$list[$nIdx]);   my @lpr=split(/\&/,$pr);
  my $Temp = $Prob;   &CreateTable(1,$Hid);
  my $MxTries = 0;   for (my $i=1; $i<=$#lpr; $i++) {
  my $TotalTries = 0;      my %storestats=();
  my $YES = 0;      my ($PrOrd,$Prob,$Tries,$Wrongs,$Code)=split(/\&/,$list[$nIdx]);
  my $Incorrect = 0;      my $Temp = $Prob;
  my $Override = 0;      my $MxTries = 0;
  my $StdNo = 0;      my $TotalTries = 0;
  my @StdLst;       my $YES = 0;
  do {      my $Incorrect = 0;
     $nIdx++;      my $Override = 0;
     $StdNo++;      my $StdNo = 0;
     $StdLst[ $StdNo ] = $Tries;      my @StdLst;
     $TotalTries += $Tries;      while ( $PrOrd == $lpr[$i] ) 
     if ( $MxTries < $Tries ) { $MxTries = $Tries; }       {
     if ( $Code eq 'C' ){ $YES++; }   $nIdx++;
     elsif( $Code eq 'I' ) { $Incorrect++; }   $StdNo++;
     elsif( $Code eq 'O' ) { $Override++; }   $StdLst[ $StdNo ] = $Tries;
     elsif( $Code eq 'U' ) { $StdNo--; }   $TotalTries += $Tries;
     ($Prob,$Tries,$Wrongs,$Code)=split(/\:/,$list[$nIdx]);   if ( $MxTries < $Tries ) { $MxTries = $Tries; } 
  } while ( $Prob eq $Temp && $nIdx < $NoElements );   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);
   
  $p_count++;      $Temp = '<a href="'.$hash{'src_'.$ResId}.
                   '" target="_blank">'.$hash{'title_'.$ResId}.$Dummy.'</a>';
  ($Temp,$ResId)=split(/\*/,$Temp);  
   
         $Temp = '<a href="'.$hash{'src_'.$ResId}.'" target="_blank">'.$Temp.'</a>';  
           
  my $res = &Apache::lonnet::declutter($hash{'src_'.$ResId});      my $res = &Apache::lonnet::declutter($hash{'src_'.$ResId});
         my $urlres=$res;      my $urlres=$res;
   
         $ResId=~/(\d+)\.(\d+)/;      $ResId=~/(\d+)\.(\d+)/;
         my $Map = &Apache::lonnet::declutter( $hash{'map_id_'.$1} );      my $Map = &Apache::lonnet::declutter( $hash{'map_id_'.$1} );
         $urlres=$Map;      $urlres=$Map;
     
       $res = '<a href="'.$hash{'src_'.$ResId}.'">'.$res.'</a>';
         $res = '<a href="'.$hash{'src_'.$ResId}.'">'.$res.'</a>';      #$Map = '<a href="'.$Map.'">'.$res.'</a>';
   
         #$Map = '<a href="'.$Map.'">'.$res.'</a>';  
   
 #------------------------ Compute the Average of Tries about one problem  #------------------------ Compute the Average of Tries about one problem
  my $Average = ($StdNo) ? $TotalTries/$StdNo : 0;      my $Average = ($StdNo) ? $TotalTries/$StdNo : 0;
   
         $storestats{$ENV{'request.course.id'}.'___'.$urlres.'___timestamp'}=time;             $storestats{$ENV{'request.course.id'}.'___'.$urlres.'___timestamp'}=time;       
         $storestats{$ENV{'request.course.id'}.'___'.$urlres.'___stdno'}=$StdNo;      $storestats{$ENV{'request.course.id'}.'___'.$urlres.'___stdno'}=$StdNo;
         $storestats{$ENV{'request.course.id'}.'___'.$urlres.'___avetries'}=$Average;      $storestats{$ENV{'request.course.id'}.'___'.$urlres.'___avetries'}=$Average;
         
 #-------------------------------- Compute percentage of Wrong tries  #-------------------------------- Compute percentage of Wrong tries
  my $Wrong = ( $StdNo ) ? 100 * ( $Incorrect / $StdNo ) : 0;      my $Wrong = ( $StdNo ) ? 100 * ( $Incorrect / $StdNo ) : 0;
   
 #-------------------------------- Compute Standard Deviation  #-------------------------------- Compute Standard Deviation
  my $StdDev = 0;       my $StdDev = 0; 
  if ( $StdNo > 1 ) {      if ( $StdNo > 1 ) {
     for ( my $n = 0; $n < $StdNo; $n++ ) {   for ( my $n = 0; $n < $StdNo; $n++ ) {
                 my $Dif = $StdLst[ $n ]-$Average;      my $Dif = $StdLst[ $n ]-$Average;
  $StdDev += $Dif*$Dif;      $StdDev += $Dif*$Dif;
     }    } 
     $StdDev /= ( $StdNo - 1 );   $StdDev /= ( $StdNo - 1 );
     $StdDev = sqrt( $StdDev );   $StdDev = sqrt( $StdDev );
  }      }
   
 #-------------------------------- Compute Degree of Difficulty  #-------------------------------- Compute Degree of Difficulty
  my $DoDiff = 0;      my $DoDiff = 0;
  if( $TotalTries > 0 ) {      if( $TotalTries > 0 ) {
     $DoDiff = 1 - ( ( $YES + $Override ) / $TotalTries );   $DoDiff = 1 - ( ( $YES + $Override ) / $TotalTries );
 #    $DoDiff =  ($TotalTries)/($YES + $Override+ 0.1);      #    $DoDiff =  ($TotalTries)/($YES + $Override+ 0.1);    
  }      }
                 
         $storestats{$ENV{'request.course.id'}.'___'.$urlres.'___difficulty'}=$DoDiff;      $storestats{$ENV{'request.course.id'}.'___'.$urlres.'___difficulty'}=$DoDiff;
   
 #-------------------------------- Compute the Skewness  #-------------------------------- Compute the Skewness
  my $Skewness = 0;      my $Skewness = 0;
         my $Sum = 0;       my $Sum = 0; 
  if ( $StdNo > 0 && $StdDev > 0 ) {      if ( $StdNo > 0 && $StdDev > 0 ) {
     for ( my $n = 0; $n < $StdNo; $n++ ) {   for ( my $n = 0; $n < $StdNo; $n++ ) {
                 my $Dif = $StdLst[ $n ]-$Average;      my $Dif = $StdLst[ $n ]-$Average;
  $Skewness += $Dif*$Dif*$Dif;      $Skewness += $Dif*$Dif*$Dif;
     }    } 
     $Skewness /= $StdNo;   $Skewness /= $StdNo;
     $Skewness /= $StdDev*$StdDev*$StdDev;      $Skewness /= $StdDev*$StdDev*$StdDev;
  }      }
 #-----------------  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 );  
       
  $CachData{($p_count-1)}=$Temp.':'.$StdNo.':'.$TotalTries.':'.  
                                 $MxTries.':'.$Avg.':'.$YES.':'.  
                                 $Override.':'.$Wrng.':'.$SD.':'.  
                                 $Sk.':'.$DoD.':'.$Map.':'.$Prob;  
   
         $urlres=~/^(\w+)\/(\w+)/;  
         if ($StdNo) {   
            &Apache::lonnet::put('resevaldata',\%storestats,$1,$2);   
         }  
   
   #--------------------- 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  #-------------------------------- Row of statistical table
         if ( $DiscFlag == 0 ) {      if ( $DiscFlag == 0 ) {
     $r->print( "\n".'<tr>'.   &TableRow($join,$i,($p_count-1));
                "\n".'<td>'.$p_count.'</td>'.      } 
                "\n".'<td>'.$Temp.'</td>'.   }
                "\n".'<td>'.$StdNo.'</td>'.   &CloseTable();
                "\n".'<td>'.$TotalTries.'</td>'.  
                "\n".'<td>'.$MxTries.'</td>'.  
                "\n".'<td>'.$Avg.'</td>'.  
                "\n".'<td>'.$YES.'</td>'.  
                "\n".'<td>'.$Override.'</td>'.  
                "\n".'<td>'.$Wrng.'</td>'.  
                "\n".'<td>'.$SD.'</td>'.  
                "\n".'<td>'.$Sk.'</td>'.  
                "\n".'<td>'.$DoD.'</td>'.  
                "\n".'<td>'.$Map.'</td>'.  
                        "\n".'</tr>' );  
     $GraphDat{$nIdx}=$DoD.':'.$Wrng;  
  }   
     }      }
   #--------------------- close Progress Line
       $r->print('<script>popwin.close()</script>');
       $r->rflush(); 
 }  }
   
   
 sub Cache_Statistics {  sub Cache_Statistics {
     my @list = ();      my @list = ();
     my $Useful;      my $Useful;
     my $UnUseful;      my $UnUseful;
     my %myHeader = reverse( %Header );      my %myHeader = reverse( %Header );
     $Pos = $myHeader{$ENV{'form.sort'}};      $Pos = $myHeader{$ENV{'form.sort'}};
       if ($Pos > 0) {$Pos++;}
     $p_count = 0;      $p_count = 0;
   
     foreach my $key( keys %CachData) {       foreach my $key( keys %CachData) { 
  my @Temp=split(/\:/,$CachData{$key});   my @Temp=split(/\&/,$CachData{$key});
  if ( $Pos == 0 || $Pos == 11 ) {   if ( $Pos == 0 ) {
     ($UnUseful,$Useful)=split(/\>/,$Temp[$Pos]);      ($UnUseful,$Useful)=split(/\>/,$Temp[$Pos]);
  }   }
  else {   else {
     $Useful = $Temp[$Pos];      $Useful = $Temp[$Pos];
  }      }   
  $list[$p_count]=$Useful.'&'.$CachData{$key};   $list[$p_count]=$Useful.'@'.$CachData{$key};
         $p_count++;          $p_count++;
     }      }
   
     @list = sort MySort (@list);      @list = sort MySort (@list);
   
     for ( my $nIdx = 0; $nIdx < $p_count; $nIdx++ ) {      my $nIdx=0;
  my( $Pre, $Post ) = split(/\&/,$list[$nIdx]);   
  my ($Temp,$StdNo,$TotalTries,$MxTries,$Avg,$YES,      if ( $Pos == 0 ) {
             $Override,$Wrng,$SD,$Sk,$DoD,$res,$Prob)=split(/\:/,$Post);   foreach (sort keys %mapsort) {
  $r->print( "\n".'<tr>'.      my ($Hid,$pr)=split(/\:/,$mapsort{$_});
                "\n".'<td>'.($nIdx+1).'</td>'.      &CreateTable(1,$Hid);
                "\n".'<td  bgcolor="#FFFFFF">'.$Temp.'</td>'.      my @lpr=split(/\&/,$pr);
                "\n".'<td>'.$StdNo.'</td>'.      for (my $i=1; $i<=$#lpr; $i++) {
                "\n".'<td>'.$TotalTries.'</td>'.   my($Pre, $Post) = split(/\@/,$list[$nIdx]); 
                "\n".'<td>'.$MxTries.'</td>'.   #$r->print('<br>'.$Pre.'---'.$Post);
                "\n".'<td>'.$Avg.'</td>'.   &TableRow($Post,$i,$nIdx);
                "\n".'<td>'.$YES.'</td>'.   $nIdx++;
                "\n".'<td>'.$Override.'</td>'.      }
                "\n".'<td>'.$Wrng.'</td>'.      &CloseTable();
                "\n".'<td>'.$SD.'</td>'.   }
                "\n".'<td>'.$Sk.'</td>'.      }
                "\n".'<td>'.$DoD.'</td>'.      else {
                "\n".'<td>'.$res.'</td>'.   &CreateTable(0);
                "\n".'</tr>' );   for ( my $nIdx = 0; $nIdx < $p_count; $nIdx++ ) {
  $GraphDat{$nIdx}=$DoD.':'.$Wrng;      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);
       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>';
   #    if( $OpResp{$PrOrd} ) {
   # $Ptr.='<td>'.'<input type="submit" name="OpResp" value="'."View_$PrOrd".'" />'.'</td>';
   #    }   
   #    else {
   # $Ptr.='<td> -------- </td>';
   #    }
       $r->print("\n".$Ptr.'</tr>' );
       $GraphDat{$RealIdx}=$DoD.':'.$Wrng;
 }  }
   
 # ------------------------------------------- Prepare data for Graphical chart  # ------------------------------------------- Prepare data for Graphical chart
Line 788  sub initial { Line 1012  sub initial {
   undef %CachData;    undef %CachData;
   undef %GraphDat;    undef %GraphDat;
   undef %DiscFac;    undef %DiscFac;
     undef %OpResp;
   undef $CurMap;    undef $CurMap;
   undef $CurSec;    undef $CurSec;
   undef $CurStu;    undef $CurStu;
   undef $p_count;    undef $p_count;
   undef $Pos;    undef $Pos;
   undef $GData;    undef $GData;
     $DiscFlag=0; 
     $P_Order=100000;
     $HWN=$P_Order;
 }  }
   
   
Line 812  sub ClassList { Line 1040  sub ClassList {
  my $classlst=&Apache::lonnet::reply   my $classlst=&Apache::lonnet::reply
                  ('dump:'.$cdom.':'.$cnum.':classlist',$chome);                   ('dump:'.$cdom.':'.$cnum.':classlist',$chome);
  my $StudNo = 0;   my $StudNo = 0;
    my $now=time;
  unless ($classlst=~/^error\:/) {   unless ($classlst=~/^error\:/) {
     foreach (sort split(/\&/,$classlst)) {      foreach (sort split(/\&/,$classlst)) {
  my ($name,$value)=split(/\=/,$_);   my ($name,$value)=split(/\=/,$_);
  my ($end,$start)=split(/\:/,&Apache::lonnet::unescape($value));   my ($end,$start)=split(/\:/,&Apache::lonnet::unescape($value));
  $name=&Apache::lonnet::unescape($name);   $name=&Apache::lonnet::unescape($name);
  my ($sname,$sdom)=split(/\:/,$name);   my ($sname,$sdom)=split(/\:/,$name);
  my $ssec=&Apache::lonnet::usection($sdom,$sname,$cid);   my $active=1;
                 if ($ssec==-1) {next;}   my $Status=$ENV{'form.status'};
  $ssec=($ssec) ? $ssec : '(none)';   $Status = ($Status) ? $Status : 'Active';
  $ssec=(int($ssec)) ? int($ssec) : $ssec;   if ( ( ($end) && $now > $end ) && 
  #$r->print($sname.'...'.$ssec.'<br>');                       ( ($Status eq 'Active') ) ) { $active=0; }
  $section{$ssec}=$ssec;   if ( ($Status eq 'Expired') && 
  if ($CurSec eq 'All Sections' || $ssec eq $CurSec) {                       ($end == 0 || $now < $end) ) { $active=0; }
     $students[$StudNo]=$name;   if ($active) {
     $StuBox{$sname}=$ssec;      my $thisindex=$#students+1;
  }      $name=&Apache::lonnet::unescape($name);
  $StudNo++;      $students[$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;}
       $ssec=($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 {   else {
Line 838  sub ClassList { Line 1083  sub ClassList {
         $r->rflush();          $r->rflush();
 # --------------- Find all assessments and put them into some linear-like order  # --------------- Find all assessments and put them into some linear-like order
  &tracetable($firstres,'&'.$lastres.'&');   &tracetable($firstres,'&'.$lastres.'&');
   #    my $c=0;
 #my $c=0;  #    foreach (sort keys %mapsort) {
 #foreach(@mapsort) {  # $r->print('<br>'.$c.')'.$_.' ... '.$mapsort{$_});
 #    $c++;  # $c++;
 #    $r->print('<br>'.$mapsort[$c]);  #    }
 #}  
 #$r->print('<br> Count = '.$c);  
   
     }      }
   
 # ------------------------------------------------------------- End render page   # ------------------------------------------------------------- End render page 
Line 881  sub Menu { Line 1123  sub Menu {
  my $content = $ENV{'form.sort'};   my $content = $ENV{'form.sort'};
  if ($content eq '' || $content eq 'Return to Menu') {   if ($content eq '' || $content eq 'Return to Menu') {
     my $Ptr = '<h3>';      my $Ptr = '<h3>';
     $Ptr .= '<input type=submit name=sort value="Problem Evaluation"/>';#General Statistics"/>';      $Ptr .= '<input type=submit name=sort value="Problem Evaluation"/>';
     $Ptr .= '<br><br>';      $Ptr .= '<br><br>';
     $Ptr .= '<input type=submit name=sort value="Student Assessment"/>';      $Ptr .= '<input type=submit name=sort value="Student Assessment"/>';
     $Ptr .= '<br><br>';  
 #    $Ptr .= '<input type=submit name=sort value=Discrimination>';#"Problem Evaluation"/>';  
     $Ptr .= '</h3>';      $Ptr .= '</h3>';
     $r->print( $Ptr );      $r->print( $Ptr );
       }        }
  else {   else {
     &initial();      &initial();
     &ClassList();      &ClassList();
     if ( $content eq 'Discrimination' || #'Problem Evaluation' ||      if ( $content eq 'Student Assessment' || 
                  $content eq 'Recalculate Discrimintion Factor' ) {  
  &CreateDiscFac();  
     }  
     elsif ( $content eq 'Student Assessment' ||   
                     $content eq 'Create Student Report' ) {                      $content eq 'Create Student Report' ) {
  &StudentOptions();   &StudentOptions();
  &StudentReport($CurStu,$StuBox{"$CurStu"});   &StudentReport($CurStu,$StuBox{"$CurStu"});
Line 936  sub StudentOptions { Line 1172  sub StudentOptions {
 }  }
   
 sub GetStatus {  sub GetStatus {
   
     $OpSelDis1='';  
     $OpSelDis2='';  
     $OpSel1='';      $OpSel1='';
     $OpSel2='';      $OpSel2='';
     $OpSel3='';      $OpSel3='';
     $OpSel4='';      $OpSel4='';
   
 #    if ( $ENV{'form.DisType'} eq 'Total Number of Correct Answers' ) {   
 # $OpSelDis1='selected';   
 # $CurDis=0;  
 #    }  
 #    else { $OpSel2 = 'selected'; $CurDis = 1;}  
   
     if ( $ENV{'form.order'} eq 'Descending' ) { $OpSel2='selected'; }      if ( $ENV{'form.order'} eq 'Descending' ) { $OpSel2='selected'; }
     else { $OpSel1 = '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'};      $CurMap = $ENV{'form.maps'};
     if ( $CurMap eq '' ) {       if ( $CurMap eq '' ) { 
  $CurMap = 'All Maps';   $CurMap = 'All Maps';
Removed from v.1.3  
changed lines
  Added in v.1.12

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