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Diff for /loncom/interface/statistics/lonproblemstatistics.pm between versions 1.4 and 1.7

version 1.4, 2002/07/27 20:48:36 version 1.7, 2002/07/30 22:09:01
Line 31 Line 31
 # 11/1,11/4,11/16,12/14,12/16,12/18,12/20,12/31 Behrouz Minaei  # 11/1,11/4,11/16,12/14,12/16,12/18,12/20,12/31 Behrouz Minaei
 # YEAR=2002  # 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  # 1/22,2/1,2/6,2/25,3/2,3/6,3/17,3/21,3/22,3/26,4/7,5/6 Behrouz Minaei
 # 5/12,5/14,5/15,5/19,5/26,7/16,7/25  Behrouz Minaei  # 5/12,5/14,5/15,5/19,5/26,7/16,7/25,7/29  Behrouz Minaei
 #  #
 ###  ###
   
Line 45  use GDBM_File; Line 45  use GDBM_File;
   
   
 sub BuildProblemStatisticsPage {  sub BuildProblemStatisticsPage {
     my ($cacheDB, $students, $courseID, $c, $r,%color)=@_;      my ($cacheDB, $students, $courseID, $c, $r)=@_;
     my %cache;      my %cache;
     #my %DoDiff;      #my %DoDiff;
     unless(tie(%cache,'GDBM_File',$cacheDB,&GDBM_READER,0640)) {      unless(tie(%cache,'GDBM_File',$cacheDB,&GDBM_READER,0640)) {
Line 61  sub BuildProblemStatisticsPage { Line 61  sub BuildProblemStatisticsPage {
     $Ptr .= &AscendOrderOptions($cache{'Ascend'});      $Ptr .= &AscendOrderOptions($cache{'Ascend'});
     $Ptr .= &ProblemStatisticsButtons($cache{'DisplayFormat'});      $Ptr .= &ProblemStatisticsButtons($cache{'DisplayFormat'});
     $Ptr .= '</table>';      $Ptr .= '</table>';
   
     $Ptr .= &ProblemStatisticsLegend();      $Ptr .= &ProblemStatisticsLegend();
       $r->print($Ptr);
   
     untie(%cache);      untie(%cache);
     foreach (@$students) {      foreach (@$students) {
Line 75  sub BuildProblemStatisticsPage { Line 75  sub BuildProblemStatisticsPage {
             untie(%cache);              untie(%cache);
         }          }
     }      }
     if($c->aborted()) { return $Ptr; }      if($c->aborted()) { return; }
   
     unless(tie(%cache,'GDBM_File',$cacheDB,&GDBM_READER,0640)) {      unless(tie(%cache,'GDBM_File',$cacheDB,&GDBM_READER,0640)) {
         return '<html><body>Unable to tie database.</body></html>';          return '<html><body>Unable to tie database.</body></html>';
     }      }
     my $discriminantFactor;      my %discriminant=();
     my @list=();      my @list=();
     my %Discuss=&Apache::loncoursedata::LoadDiscussion($courseID);      my %Discuss=&Apache::loncoursedata::LoadDiscussion($courseID);
     my $index=0;      my $index=0;
     foreach (@$students) {      foreach (@$students) {
  $index++;   $index++;
  #&Apache::lonstatistics::Update_PrgWin(++$index,$r);   #&Apache::lonstatistics::Update_PrgWin(++$index,$r);
         $discriminantFactor = &ExtractStudentData(\%cache, $_, \@list,          &ExtractStudentData(\%cache, $_, \@list,\%Discuss, $r, \%discriminant);
   \%Discuss, $r);  
     }      }
     #&Apache::lonstatistics::Close_PrgWin($r);      #&Apache::lonstatistics::Close_PrgWin($r);
    
     my ($upper, $lower) = &Discriminant($discriminantFactor);      my ($upper, $lower) = &Discriminant(\%discriminant,$r);
     my %Header = (0,"Homework Sets Order",1,"#Stdnts",2,"Tries",3,"Mod",      my %Header = (0,"Homework Sets Order",1,"#Stdnts",2,"Tries",3,"Mod",
                   4,"Mean",5,"#YES",6,"#yes",7,"%Wrng",8,"DoDiff",                    4,"Mean",5,"#YES",6,"#yes",7,"%Wrng",8,"DoDiff",
                   9,"S.D.",10,"Skew.",11,"D.F.1st",12,"D.F.2nd", 13, "Disc.");                    9,"S.D.",10,"Skew.",11,"D.F.1st",12,"D.F.2nd", 13, "Disc.");
       my $color=&setbgcolor(0);
     my %GraphDat= &BuildStatisticsTable(\%cache, $discriminantFactor, \@list,       my %GraphDat= &BuildStatisticsTable(\%cache, $upper, $lower, \@list, 
                                         \%Header, $students, $r, \%color);                                          \%Header, $students, $r, $color);
   
     untie(%cache);      untie(%cache);
   
     return $Ptr;  
 }  }
   
   
Line 149  sub CloseTable { Line 145  sub CloseTable {
     
 # ------ Dump the Student's DB file and handling the data for statistics table   # ------ Dump the Student's DB file and handling the data for statistics table 
 sub ExtractStudentData {  sub ExtractStudentData {
     my ($cache,$name,$list,$Discuss,$r)=@_;      my ($cache,$name,$list,$Discuss,$r,$discriminant)=@_;
     my %discriminantFactor;  
   
     my $totalTries = 0;      my $totalTries = 0;
     my $totalAwarded = 0;      my $totalAwarded = 0;
     my $tempProblemOrder=0;  
     my $spent=0;      my $spent=0;
     my $spent_yes=0;      my $spent_yes=0;
     my $TotDiscuss=0;      my $TotDiscuss=0;
Line 164  sub ExtractStudentData { Line 157  sub ExtractStudentData {
     my $TotFirst = 0;      my $TotFirst = 0;
     my $TimeTot = 0;      my $TimeTot = 0;
     my $Discussed=0;      my $Discussed=0;
       my $discrim='';
       my $tempSequenceOrder=100;
   
 $Apache::lonxml::debug=1;  #$Apache::lonxml::debug=1;
 #&Apache::lonhomework::showhash(%$cache);  #&Apache::lonhomework::showhash(%$cache);
 $Apache::lonxml::debug=0;  #$Apache::lonxml::debug=0;
   
     foreach my $sequence (split(':', $cache->{'orderedSequences'})) {      foreach my $sequence (split(':', $cache->{'orderedSequences'})) {
    my $tempProblemOrder=100;
    $tempSequenceOrder++;
 #        if($cache->{'ProblemStatisticsMap'} ne 'All Maps'  &&  #        if($cache->{'ProblemStatisticsMap'} ne 'All Maps'  &&
 #           $cache->{'ProblemStatisticsMap'} ne $cache->{$sequence.':title'}) {  #           $cache->{'ProblemStatisticsMap'} ne $cache->{$sequence.':title'}) {
 #    $r->print("<br>$name ---   $sequence");  #    $r->print("<br>sequences=$cache->{'orderedSequences'}");
 #    $r->print("<br>".$cache->{$sequence.':title'});  #    $r->print("<br>".$cache->{$sequence.':title'});
 #            next;  #            next;
 #        }  #        }
   
         my $Dis = '';          #$discrim .= '&';
         foreach my $problemID (split(':', $cache->{$sequence.':problems'})) {          foreach my $problemID (split(':', $cache->{$sequence.':problems'})) {
   #    $r->print("<br>problems=$cache->{$sequence.':problems'}");
             my $problem = $cache->{$problemID.':problem'};              my $problem = $cache->{$problemID.':problem'};
     $r->print("<br>$problemID === $problem");  #    $r->print("<br>$problemID === $problem");
             my $LatestVersion = $cache->{$name.':version:'.$problem};              my $LatestVersion = $cache->{$name.':version:'.$problem};
     # Output dashes for all the parts of this problem if there      # Output dashes for all the parts of this problem if there
             # is no version information about the current problem.              # is no version information about the current problem.
Line 195  $Apache::lonxml::debug=0; Line 193  $Apache::lonxml::debug=0;
             #}              #}
   
             my %partData=undef;              my %partData=undef;
       $partData{'count'}=0;
             # Initialize part data, display skips correctly              # Initialize part data, display skips correctly
             # Skip refers to when a student made no submissions on that              # Skip refers to when a student made no submissions on that
             # part/problem.              # part/problem.
             foreach my $part (split(/\:/,$cache->{$sequence.':'.              foreach my $part (split(/\:/,$cache->{$sequence.':'.
                                                   $problemID.                                                    $problemID.
                                                   ':parts'})) {                                                    ':parts'})) {
    $tempProblemOrder++;
    $partData{'count'}++;
   # $r->print("<br>parts=$cache->{$sequence.':'.$problemID.':parts'}");
                   $partData{$part.':order'}=$tempProblemOrder;
                 $partData{$part.':tries'}=0;                  $partData{$part.':tries'}=0;
                 $partData{$part.':code'}='-';                  $partData{$part.':code'}='-';
             }              }
Line 223  $Apache::lonxml::debug=0; Line 226  $Apache::lonxml::debug=0;
                     my $time=0;                      my $time=0;
                     my $awarded=0;                      my $awarded=0;
     $Discussed=0;      $Discussed=0;
                     my $code='U';                      my $code='-';
   
                     $awarded = $cache->{$name.                      $awarded = $cache->{"$name:$Version:$problem:resource.".
                                         "$Version:$problem:resource.".  
                                         "$part.awarded"};                                          "$part.awarded"};
                     $partData{$part.':awarded'} = ($awarded) ? $awarded : 0;                      $partData{$part.':awarded'} = ($awarded) ? $awarded : 0;
                     $totalAwarded += $awarded;                      $totalAwarded += $awarded;
   
                     $tries = $cache->{$name.":$Version:$problem".                      $tries = $cache->{"$name:$Version:$problem".
                                       ":resource.$part.tries"};                                        ":resource.$part.tries"};
                     $partData{$part.':tries'} = ($tries) ? $tries : 0;                      $partData{$part.':tries'} = ($tries) ? $tries : 0;
                     $partData{$part.':wrong'} = $partData{$part.':tries'};                      $partData{$part.':wrong'} = $partData{$part.':tries'};
Line 252  $Apache::lonxml::debug=0; Line 254  $Apache::lonxml::debug=0;
                 }                  }
             }              }
   
   #$Apache::lonxml::debug=1;
   #&Apache::lonhomework::showhash(%partData);
   #$Apache::lonxml::debug=0;
   
             # Loop through all the parts for the current problem in the               # Loop through all the parts for the current problem in the 
             # correct order and prepare the output              # correct order and prepare the output
       my $partCounter=0;
             foreach (split(/\:/,$cache->{$sequence.':'.$problemID.              foreach (split(/\:/,$cache->{$sequence.':'.$problemID.
                                          ':parts'})) {                                           ':parts'})) {
     #$r->print("<br>".$cache->{$sequence.':title'});   $partCounter++;
   
                 my $Yes = 0;                  my $Yes = 0;
                 if($partData{$_.':code'} eq 'C' ||                   if($partData{$_.':code'} eq 'C' || 
                    $partData{$_.':code'} eq 'O') {                     $partData{$_.':code'} eq 'O') {
                     $Yes=1;                      $Yes=1;
                 }                  }
                 my $ptr = $tempProblemOrder.'&'.$problemID;                  my $pOrder=$partData{$_.':order'};
                   my $ptr = $tempSequenceOrder.':'.$pOrder.':'.$problemID;
   
                 if($_ > 1) {                  if($partData{'count'} > 1) {
                     $ptr .= "*(part $_)";                      $ptr .= "*(part $_)";
                     $Dis .= '&';  
                 }                  }
                   #if($partCounter > 1) {
                       $discrim .= '&';
                   #}
   
  my ($pr_no,$dod)=split('&',$ptr);   my ($pr_no,$dod)=split('&',$ptr);
 # my $DoDiff=$DoDiff->{$dod};  # my $DoDiff=$DoDiff->{$dod};
 #               $r->print('<br>'.$name.'---'.$ptr.'==='.$DoDiff);  #               $r->print('<br>'.$name.'---'.$ptr.'==='.$DoDiff);
   
                 my $Fac = ($partData{$_.':Tries'}) ?                   my $Fac = ($partData{$_.':tries'}) ? 
                     ($partData{$_.':awarded'}/$partData{$_.':tries'}) : 0;                      ($partData{$_.':awarded'}/$partData{$_.':tries'}) : 0;
                 my $DisF;                  my $DisF;
                 if($Fac > 0 &&  $Fac < 1) {                   if($Fac > 0 &&  $Fac < 1) { 
Line 288  $Apache::lonxml::debug=0; Line 297  $Apache::lonxml::debug=0;
                     $Discussed=1;                      $Discussed=1;
                 }                  }
                 my $time = $cache->{"$name:$LatestVersion:$problem:timestamp"};                  my $time = $cache->{"$name:$LatestVersion:$problem:timestamp"};
                 $Dis .= $tempProblemOrder.'='.$DisF.'+'.$Yes;                  $discrim .= $tempSequenceOrder.'@'.$pOrder.'='.$DisF.'+'.$Yes;
                 $ptr .= '&'.$partData{$_.'.tries'}.                  $ptr .= '&'.$partData{$_.':tries'}.
                         '&'.$partData{$_.'.wrongs'}.                          '&'.$partData{$_.':wrong'}.
                         '&'.$partData{$_.'.code'};                          '&'.$partData{$_.':code'};
                 push (@$list, $ptr."&$Discussed");                  push (@$list, $ptr."&$Discussed");
                 $r->print('<br>'.$name.'---'.$ptr);  #                $r->print('<br>'.$_.$name.'---'.$ptr);
   
 #### if ($DoDiff>0.85) {  #### if ($DoDiff>0.85) {
   
                 $TimeTot += $time;                  $TimeTot += $time;
   
                 if ($Yes==1 && $partData{$_.'.Tries'}==1) {                  if ($Yes==1 && $partData{$_.':tries'}==1) {
     $TotFirst++;      $TotFirst++;
                 }                  }
 # my $Acts= $Activity->{$name.':'.$problem};  # my $Acts= $Activity->{$name.':'.$problem};
Line 318  $Apache::lonxml::debug=0; Line 327  $Apache::lonxml::debug=0;
                 $tempProblemOrder++;                  $tempProblemOrder++;
             }              }
         }          }
  my $pstr;  
         if($totalTries) {  
     my $DisFac = ($totalAwarded/$totalTries);  
     my $DisFactor = sprintf( "%.4f", $DisFac );  
             my $TS = sprintf( "%.2f", $spent );  
             my $TS_yes = sprintf( "%.2f", $spent_yes );  
    # $DiscFac{$DisFactor}=$Dis;  
     $pstr=$DisFactor.':'.$name.':'.$ProbTot.':'.$TotalOpend.':'.  
                   $totalTries.':'.$ProbSolved.':'.$TotFirst.':'.  
                   $TS_yes.':'.$TS.':'.$TotDiscuss;  
     $discriminantFactor{$pstr}=$Dis;  
  }  
     }      }
       my $pstr;
     return (\%discriminantFactor);      if($totalTries) {
    my $DisFac = ($totalAwarded/$totalTries);
    my $DisFactor = sprintf( "%.4f", $DisFac );
           my $TS = sprintf( "%.2f", $spent );
           my $TS_yes = sprintf( "%.2f", $spent_yes );
    $pstr=$DisFactor.':'.$name.':'.$ProbTot.':'.$TotalOpend.':'.
                 $totalTries.':'.$ProbSolved.':'.$TotFirst.':'.
                 $TS_yes.':'.$TS.':'.$TotDiscuss;
    (%$discriminant)->{$pstr}=$discrim;
       }
 }  }
   
   
Line 351  sub MySort { Line 357  sub MySort {
   
   
 sub BuildStatisticsTable {  sub BuildStatisticsTable {
     my ($cache,$discriminantFactor,$list,$headings,$students,$r,%color)=@_;      my ($cache,$upper,$lower,$list,$headings,$students,$r,$color)=@_;
       my $NoElements = scalar @$list;
       my @List=sort(@$list);
   
 #6666666  #6666666
 #    my $file="/home/httpd/perl/tmp/183d.txt";  #    my $file="/home/httpd/perl/tmp/183d.txt";
Line 364  sub BuildStatisticsTable { Line 372  sub BuildStatisticsTable {
 ##              'Loading Discussion...";</script>');  ##              'Loading Discussion...";</script>');
 ##    my ($doDiffFile) = &LoadDoDiffFile();  ##    my ($doDiffFile) = &LoadDoDiffFile();
   
   ##777777
   ##    $Str .= &Classify($discriminantFactor, $students);
   
     my $p_count = 0;      my $p_count = 0;
     my $nIndex = 0;  
     my $dummy;      my $dummy;
     my $p_val;      my $p_val;
     my $ResId;      my $ResId;
     my %GraphDat;      my %GraphDat;
     my $NoElements = scalar @$list;      my $cIdx=0;
   
   
     foreach my $sequence (split(':', $cache->{'orderedSequences'})) {      foreach my $sequence (split(':', $cache->{'orderedSequences'})) {
   
  &CreateProblemStatisticsTableHeading($cache->{'DisplayFormat'},          &CreateProblemStatisticsTableHeading(1,$cache->{$sequence.':source'},
                                              $cache->{$sequence.':source'},                                                $cache->{$sequence.':title'}, 
                                              $cache->{$sequence.':title'},  
                                              $headings,$r);                                               $headings,$r);
    my ($tar,$Tries,$Wrongs,$Code,$Disc)=split(/\&/,
         foreach my $problemID (split(':', $cache->{$sequence.':problems'})) {                                                     $List[$cIdx]);
             my $problem = $cache->{$problemID.':problem'};          my ($SqOrd,$PrOrd,$Prob)=split(/\:/,$tar);
     $r->print("<br>$problem");   $sequence+=100;
    while ($SqOrd==$sequence && $cIdx<$NoElements) {
  }  
     }    
 }  
 =pod  
 ##777777  
 ##    $Str .= &Classify($discriminantFactor, $students);  
   
   
  my ($Hid,$pr)=split(/\:/,$mapsort{$_});  
  my @lpr=split(/\&/,$pr);  
  for (my $i=1; $i<=$#lpr; $i++) {  
     my %storestats=();      my %storestats=();
     my ($PrOrd,$Prob,$Tries,$Wrongs,$Code,$Disc)=split(/\&/,$list->[$nIndex]);      my $pOrd=$PrOrd;
     my $Temp = $Prob;      my $Temp = $Prob;
     my $MxTries = 0;      my $MxTries = 0;
     my $TotalTries = 0;      my $TotalTries = 0;
Line 406  sub BuildStatisticsTable { Line 403  sub BuildStatisticsTable {
     my $StdNo = 0;      my $StdNo = 0;
     my $DiscNo=0;      my $DiscNo=0;
     my @StdLst;      my @StdLst;
     while ( $PrOrd == $lpr[$i] )       while ($pOrd==$PrOrd && $cIdx<$NoElements)
     {      {
  $nIndex++;   $cIdx++;
  $StdNo++;   $StdNo++;
  $StdLst[ $StdNo ] = $Tries;   $StdLst[ $StdNo ] = $Tries;
  $TotalTries += $Tries;   $TotalTries += $Tries;
Line 416  sub BuildStatisticsTable { Line 413  sub BuildStatisticsTable {
  if ( $Code eq 'C' ){ $YES++; }   if ( $Code eq 'C' ){ $YES++; }
  elsif( $Code eq 'I' ) { $Incorrect++; }   elsif( $Code eq 'I' ) { $Incorrect++; }
  elsif( $Code eq 'O' ) { $Override++; }   elsif( $Code eq 'O' ) { $Override++; }
  elsif( $Code eq 'U' ) { $StdNo--; }   elsif( $Code eq '-' ) { $StdNo--; }
  ($PrOrd,$Prob,$Tries,$Wrongs,$Code,$Disc)=split(/\&/,$list->[$nIndex]);   ($tar,$Tries,$Wrongs,$Code,$Disc)=split(/\&/,
     }                                                       $List[$cIdx]);
           ($SqOrd,$PrOrd,$Prob)=split(/\:/,$tar);
       }
   
     $p_count++;      $p_count++;
     my $Dummy;      my $Dummy;
     ($ResId,$Dummy)=split(/\*/,$Temp);      ($ResId,$Dummy)=split(/\*/,$Temp);
   
     $Temp = '<a href="'.$cache->{'src_'.$ResId}.  ######################
                 '" target="_blank">'.$cache->{'title_'.$ResId}.$Dummy.'</a>';      $Temp = '<a href="'.$cache->{$ResId.':source'}.
                   '" target="_blank">'.$cache->{$ResId.':title'}.$Dummy.'</a>';
   
     my $res = &Apache::lonnet::declutter($cache->{'src_'.$ResId});      my $res = &Apache::lonnet::declutter($cache->{'src_'.$ResId});
     my $urlres=$res;      my $urlres=$res;
Line 433  sub BuildStatisticsTable { Line 433  sub BuildStatisticsTable {
     $ResId=~/(\d+)\.(\d+)/;      $ResId=~/(\d+)\.(\d+)/;
     my $Map = &Apache::lonnet::declutter( $cache->{'map_id_'.$1} );      my $Map = &Apache::lonnet::declutter( $cache->{'map_id_'.$1} );
     $urlres=$Map;      $urlres=$Map;
    #######################
     $res = '<a href="'.$cache->{'src_'.$ResId}.'">'.$res.'</a>';  
   #    $res = '<a href="'.$cache->{'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;
         
Line 480  sub BuildStatisticsTable { Line 481  sub BuildStatisticsTable {
     }      }
   
 #--------------------- Compute the Discrimination Factors  #--------------------- Compute the Discrimination Factors
             my ($Up1,$Up2)=split(/\:/,':');#jason$DisUp->{$lpr[$i]});              my ($Up1,$Up2)=split(/\:/,$upper->{$sequence.'@'.$pOrd});
     my ($Lw1,$Lw2)=split(/\:/,':');#jason$DisLow->{$lpr[$i]});      my ($Lw1,$Lw2)=split(/\:/,$lower->{$sequence.'@'.$pOrd});
   
     my $Dis1 = $Up1 - $Lw1;      my $Dis1 = $Up1 - $Lw1;
     my $Dis2 = $Up2 - $Lw2;      my $Dis2 = $Up2 - $Lw2;
     my $_D1 = sprintf("%.2f", $Dis1);      my $_D1 = sprintf("%.2f", $Dis1);
Line 493  sub BuildStatisticsTable { Line 495  sub BuildStatisticsTable {
     my $SD = sprintf( "%.1f", $StdDev );      my $SD = sprintf( "%.1f", $StdDev );
     my $DoD = sprintf( "%.2f", $DoDiff );      my $DoD = sprintf( "%.2f", $DoDiff );
     my $Sk = sprintf( "%.1f", $Skewness );      my $Sk = sprintf( "%.1f", $Skewness );
     my $join = $lpr[$i].'&'.$Temp.'&'.$StdNo.'&'.      my $join = $Prob.'&'.$Temp.'&'.$StdNo.'&'.
                        $TotalTries.'&'.$MxTries.'&'.$Avg.'&'.                         $TotalTries.'&'.$MxTries.'&'.$Avg.'&'.
                        $YES.'&'.$Override.'&'.$Wrng.'&'.$DoD.'&'.                         $YES.'&'.$Override.'&'.$Wrng.'&'.$DoD.'&'.
        $SD.'&'.$Sk.'&'.$_D1.'&'.$_D2.'&'.         $SD.'&'.$Sk.'&'.$_D1.'&'.$_D2.'&'.
Line 510  sub BuildStatisticsTable { Line 512  sub BuildStatisticsTable {
  &Apache::lonnet::put('resevaldata',\%storestats,$1,$2);    &Apache::lonnet::put('resevaldata',\%storestats,$1,$2); 
     }      }
 #-------------------------------- Row of statistical table  #-------------------------------- Row of statistical table
             &TableRow($cache,$join,$i,($p_count-1),$r,\%color,\%GraphDat);              &TableRow($cache,$join,$cIdx,($p_count-1),$r,$color,\%GraphDat);
  }   }
  &CloseTable($cache,$r);   &CloseTable($cache,$r);
     }      }
     &Close_PrgWin();  ###    &Close_PrgWin();
 #666666  #666666
 #    close( OUT );  #    close( OUT );
 #666666  #666666
 }  }
 =cut  
   
 =pod  =pod
 sub Cache_Statistics {  sub Cache_Statistics {
Line 556  sub Cache_Statistics { Line 557  sub Cache_Statistics {
     for (my $i=1; $i<=$#lpr; $i++) {      for (my $i=1; $i<=$#lpr; $i++) {
  my($Pre, $Post) = split(/\@/,$list[$nIndex]);    my($Pre, $Post) = split(/\@/,$list[$nIndex]); 
  #$r->print('<br>'.$Pre.'---'.$Post);   #$r->print('<br>'.$Pre.'---'.$Post);
  &TableRow($cache,$Post,$i,$nIndex,\%color,\%GraphDat);   &TableRow($cache,$Post,$i,$nIndex,$color,\%GraphDat);
  $nIndex++;   $nIndex++;
     }      }
     &CloseTable($cache);      &CloseTable($cache);
Line 566  sub Cache_Statistics { Line 567  sub Cache_Statistics {
  &CreateProblemStatisticsTableHeading($cache,0);   &CreateProblemStatisticsTableHeading($cache,0);
  for ( my $nIndex = 0; $nIndex < $p_count; $nIndex++ ) {   for ( my $nIndex = 0; $nIndex < $p_count; $nIndex++ ) {
     my($Pre, $Post) = split(/\@/,$list[$nIndex]);       my($Pre, $Post) = split(/\@/,$list[$nIndex]); 
     &TableRow($cache,$Post,$nIndex,$nIndex,\%color,\%GraphDat);      &TableRow($cache,$Post,$nIndex,$nIndex,$color,\%GraphDat);
  }    } 
  &CloseTable($cache);   &CloseTable($cache);
     }      }
Line 577  sub TableRow { Line 578  sub TableRow {
     my ($cache,$Str,$Idx,$RealIdx,$r,$color,$GraphDat)=@_;      my ($cache,$Str,$Idx,$RealIdx,$r,$color,$GraphDat)=@_;
     my($PrOrd,$Temp,$StdNo,$TotalTries,$MxTries,$Avg,$YES,$Override,      my($PrOrd,$Temp,$StdNo,$TotalTries,$MxTries,$Avg,$YES,$Override,
        $Wrng,$DoD,$SD,$Sk,$_D1,$_D2,$DiscNo,$Prob)=split(/\&/,$Str);         $Wrng,$DoD,$SD,$Sk,$_D1,$_D2,$DiscNo,$Prob)=split(/\&/,$Str);
   #    $r->print('<br>'.$Str);
     if ($ENV{'form.showcsv'}) {      if ($ENV{'form.showcsv'}) {
         my ($ResId,$Dummy)=split(/\*/,$Prob);          my ($ResId,$Dummy)=split(/\*/,$Prob);
         my $Ptr =  "\n".'<br>'.          my $Ptr =  "\n".'<br>'.
Line 619  sub TableRow { Line 621  sub TableRow {
                "\n".'<td bgcolor='.$color->{"yellow"}.'> '.$DiscNo.'</td>';                 "\n".'<td bgcolor='.$color->{"yellow"}.'> '.$DiscNo.'</td>';
         $r->print("\n".$Ptr.'</tr>' );          $r->print("\n".$Ptr.'</tr>' );
     }      }
     $GraphDat->{$RealIdx}=$DoD.':'.$Wrng;  #    $GraphDat->{$RealIdx}=$DoD.':'.$Wrng;
   }
   
   
   # For loading the colored table for display or un-colored for print
   sub setbgcolor {
       my $PrintTable=shift;
       my %color;
       if ($PrintTable){
    $color{"gb"}="#FFFFFF";
    $color{"red"}="#FFFFFF";
    $color{"yellow"}="#FFFFFF";
    $color{"green"}="#FFFFFF";
    $color{"purple"}="#FFFFFF";
       } else {
    $color{"gb"}="#DDFFFF";
    $color{"red"}="#FFDDDD";
    $color{"yellow"}="#EEFFCC";
    $color{"green"}="#DDFFDD";
    $color{"purple"}="#FFDDFF";
       }
   
       return \%color;
 }  }
   
   
 sub StatusOptions {  sub StatusOptions {
     my ($cache)=@_;      my ($cache)=@_;
   
Line 695  sub ProblemStatisticsLegend { Line 720  sub ProblemStatisticsLegend {
     my $Ptr = '';      my $Ptr = '';
     $Ptr = '<table border="0">';      $Ptr = '<table border="0">';
     $Ptr .= '<tr><td>';      $Ptr .= '<tr><td>';
     $Ptr .= '<b>#Stdnts</b>:</td>';      $Ptr .= '<b>#Stdnts</b></td>';
     $Ptr .= '<td>Total Number of Students opened the problem.';      $Ptr .= '<td>Total Number of Students opened the problem.';
     $Ptr .= '</td></tr><tr><td>';      $Ptr .= '</td></tr><tr><td>';
     $Ptr .= '<b>Tries</b>:</td>';      $Ptr .= '<b>Tries</b></td>';
     $Ptr .= '<td>Total Number of Tries for solving the problem.';      $Ptr .= '<td>Total Number of Tries for solving the problem.';
     $Ptr .= '</td></tr><tr><td>';      $Ptr .= '</td></tr><tr><td>';
     $Ptr .= '<b>Mod</b>:</td>';      $Ptr .= '<b>Mod</b></td>';
     $Ptr .= '<td>Maximunm Number of Tries for solving the problem.';      $Ptr .= '<td>Maximunm Number of Tries for solving the problem.';
     $Ptr .= '</td></tr><tr><td>';      $Ptr .= '</td></tr><tr><td>';
     $Ptr .= '<b>Mean</b>:</td>';      $Ptr .= '<b>Mean</b></td>';
     $Ptr .= '<td>Average Number of the tries. [ Tries / #Stdnts ]';      $Ptr .= '<td>Average Number of the tries. [ Tries / #Stdnts ]';
     $Ptr .= '</td></tr><tr><td>';      $Ptr .= '</td></tr><tr><td>';
     $Ptr .= '<b>#YES</b>:</td>';      $Ptr .= '<b>#YES</b></td>';
     $Ptr .= '<td>Number of students solved the problem correctly.';      $Ptr .= '<td>Number of students solved the problem correctly.';
     $Ptr .= '</td></tr><tr><td>';      $Ptr .= '</td></tr><tr><td>';
     $Ptr .= '<b>#yes</b>:</td>';      $Ptr .= '<b>#yes</b></td>';
     $Ptr .= '<td>Number of students solved the problem by override.';      $Ptr .= '<td>Number of students solved the problem by override.';
     $Ptr .= '</td></tr><tr><td>';      $Ptr .= '</td></tr><tr><td>';
     $Ptr .= '<b>%Wrng</b>:</td>';      $Ptr .= '<b>%Wrng</b></td>';
     $Ptr .= '<td>Percentage of students tried to solve the problem ';      $Ptr .= '<td>Percentage of students tried to solve the problem ';
     $Ptr .= 'but still incorrect. [ 100*((#Stdnts-(#YES+#yes))/#Stdnts) ]';      $Ptr .= 'but still incorrect. [ 100*((#Stdnts-(#YES+#yes))/#Stdnts) ]';
     $Ptr .= '</td></tr><tr><td>';      $Ptr .= '</td></tr><tr><td>';
     $Ptr .= '<b>DoDiff</b>:</td>';      $Ptr .= '<b>DoDiff</b></td>';
     $Ptr .= '<td>Degree of Difficulty of the problem.  ';      $Ptr .= '<td>Degree of Difficulty of the problem.  ';
     $Ptr .= '[ 1 - ((#YES+#yes) / Tries) ]';      $Ptr .= '[ 1 - ((#YES+#yes) / Tries) ]';
     $Ptr .= '</td></tr><tr><td>';      $Ptr .= '</td></tr><tr><td>';
     $Ptr .= '<b>S.D.</b>:</td>';      $Ptr .= '<b>S.D.</b></td>';
     $Ptr .= '<td>Standard Deviation of the tries.  ';      $Ptr .= '<td>Standard Deviation of the tries.  ';
     $Ptr .= '[ sqrt(sum((Xi - Mean)^2)) / (#Stdnts-1) ';      $Ptr .= '[ sqrt(sum((Xi - Mean)^2)) / (#Stdnts-1) ';
     $Ptr .= 'where Xi denotes every student\'s tries ]';      $Ptr .= 'where Xi denotes every student\'s tries ]';
     $Ptr .= '</td></tr><tr><td>';      $Ptr .= '</td></tr><tr><td>';
     $Ptr .= '<b>Skew.</b>:</td>';      $Ptr .= '<b>Skew.</b></td>';
     $Ptr .= '<td>Skewness of the students tries.';      $Ptr .= '<td>Skewness of the students tries.';
     $Ptr .= '[(sqrt( sum((Xi - Mean)^3) / #Stdnts)) / (S.D.^3)]';      $Ptr .= '[(sqrt( sum((Xi - Mean)^3) / #Stdnts)) / (S.D.^3)]';
     $Ptr .= '</td></tr><tr><td>';      $Ptr .= '</td></tr><tr><td>';
     $Ptr .= '<b>Dis.F.</b>:</td>';      $Ptr .= '<b>Dis.F.</b></td>';
     $Ptr .= '<td>Discrimination Factor: A Standard for evaluating the ';      $Ptr .= '<td>Discrimination Factor: A Standard for evaluating the ';
     $Ptr .= 'problem according to a Criterion<br>';      $Ptr .= 'problem according to a Criterion<br>';
     $Ptr .= '<b>[Applied Criterion in %27 Upper Students - ';      $Ptr .= '<b>[Applied Criterion in %27 Upper Students - ';
Line 749  sub ProblemStatisticsLegend { Line 774  sub ProblemStatisticsLegend {
   
 #------- Processing upperlist and lowerlist according to each problem  #------- Processing upperlist and lowerlist according to each problem
 sub ProcessDiscriminant {  sub ProcessDiscriminant {
     my ($List) = @_;      my ($List,$r) = @_;
     my @sortedList = sort (@$List);      my @sortedList = sort (@$List);
     my $Count = scalar @sortedList;      my $Count = scalar @sortedList;
     my $Problem;      my $Problem;
Line 762  sub ProcessDiscriminant { Line 787  sub ProcessDiscriminant {
     my $nStudent=0;      my $nStudent=0;
     my %Proc=undef;      my %Proc=undef;
     while ($nIndex<$Count) {      while ($nIndex<$Count) {
   #        $r->print("<br> $nIndex) $sortedList[$nIndex]");
  ($Problem,$tmp)=split(/\=/,$sortedList[$nIndex]);   ($Problem,$tmp)=split(/\=/,$sortedList[$nIndex]);
  @Dis=split(/\+/,$tmp);   @Dis=split(/\+/,$tmp);
  my $Temp = $Problem;   my $Temp = $Problem;
Line 773  sub ProcessDiscriminant { Line 799  sub ProcessDiscriminant {
     ($Problem,$tmp)=split(/\=/,$sortedList[$nIndex]);      ($Problem,$tmp)=split(/\=/,$sortedList[$nIndex]);
     @Dis=split(/\+/,$tmp);      @Dis=split(/\+/,$tmp);
  } while ( $Problem eq $Temp && $nIndex < $Count );   } while ( $Problem eq $Temp && $nIndex < $Count );
 # $Proc{$Temp}=($Sum1/$nStudent).':'.$nStudent;  
  $Proc{$Temp}=($Sum1/$nStudent).':'.($Sum2/$nStudent);   $Proc{$Temp}=($Sum1/$nStudent).':'.($Sum2/$nStudent);
 #       $r->print("$nIndex) $Temp --> ($nStudent) $Proc{$Temp} <br>");  #        $r->print("<br> $nIndex) $Temp --> ($nStudent) $Proc{$Temp}");
  $Sum1=0;   $Sum1=0;
  $Sum2=0;   $Sum2=0;
  $nStudent=0;   $nStudent=0;
Line 786  sub ProcessDiscriminant { Line 811  sub ProcessDiscriminant {
   
 #------- Creating Discimination factor     #------- Creating Discimination factor   
 sub Discriminant {  sub Discriminant {
     my ($discriminantFactor)=@_;      my ($discriminant,$r)=@_;
     my @discriminantKeys=keys(%$discriminantFactor);  #$Apache::lonxml::debug=1;
   #&Apache::lonhomework::showhash(%$discriminant);
   #$Apache::lonxml::debug=0;
       my @discriminantKeys=keys(%$discriminant);
     my $Count = scalar @discriminantKeys;      my $Count = scalar @discriminantKeys;
   
     my $UpCnt = int(0.27*$Count);      my $UpCnt = int(0.27*$Count);
Line 801  sub Discriminant { Line 829  sub Discriminant {
  $Count++;       $Count++;    
  if($low < $UpCnt || $Count > $up) {   if($low < $UpCnt || $Count > $up) {
             $low++;              $low++;
             my $str=$discriminantFactor->{$key};              my $str=$discriminant->{$key};
             foreach(split(/\:/,$str)){              foreach(split(/\&/,$str)){
                 if($_) {                  if($_) {
                     if($low<$UpCnt) { push(@LowList,$_); }                      if($low<$UpCnt) { push(@LowList,$_); }
                     else            { push(@UpList,$_);  }                      else            { push(@UpList,$_);  }
Line 810  sub Discriminant { Line 838  sub Discriminant {
             }              }
         }          }
     }      }
     my %DisUp =  &ProcessDiscriminant(\@UpList);      my %DisUp =  &ProcessDiscriminant(\@UpList,$r);
     my %DisLow = &ProcessDiscriminant(\@LowList);      my %DisLow = &ProcessDiscriminant(\@LowList,$r);
   
     return (\%DisUp, \%DisLow);      return (\%DisUp, \%DisLow);
 }  }
Removed from v.1.4  
changed lines
  Added in v.1.7

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