[BACK]Return to lonproblemstatistics.pm CVS log [TXT] [DIR] Up to [LON-CAPA] / loncom / interface / statistics

Diff for /loncom/interface/statistics/lonproblemstatistics.pm between versions 1.98 and 1.107

version 1.98, 2005/03/03 18:56:26 version 1.107, 2006/05/01 19:29:13
Line 50  Excel files, and plots. Line 50  Excel files, and plots.
 package Apache::lonproblemstatistics;  package Apache::lonproblemstatistics;
   
 use strict;  use strict;
 use Apache::lonnet();  use Apache::lonnet;
 use Apache::loncommon();  use Apache::loncommon();
 use Apache::lonhtmlcommon;  use Apache::lonhtmlcommon;
 use Apache::loncoursedata;  use Apache::loncoursedata;
Line 362  my @Fields = ( Line 362  my @Fields = (
              sortable => 'no',               sortable => 'no',
              graphable => 'no',               graphable => 'no',
              long_title => 'Problem weight (for instructor)',               long_title => 'Problem weight (for instructor)',
              selectable => 'no',               selectable => 'yes',
              defaultselected => 'yes',               defaultselected => 'yes',
             },              },
 );  );
Line 516  my %SelectedFields; Line 516  my %SelectedFields;
 sub parse_field_selection {  sub parse_field_selection {
     #      #
     # Pull out the defaults      # Pull out the defaults
     if (! defined($ENV{'form.fieldselections'})) {      if (! defined($env{'form.fieldselections'})) {
         $ENV{'form.fieldselections'} = [];          $env{'form.fieldselections'} = [];
         foreach my $field (@Fields) {          foreach my $field (@Fields) {
             next if ($field->{'selectable'} ne 'yes');              next if ($field->{'selectable'} ne 'yes');
             if ($field->{'defaultselected'} eq 'yes') {              if ($field->{'defaultselected'} eq 'yes') {
                 push(@{$ENV{'form.fieldselections'}},$field->{'name'});                  push(@{$env{'form.fieldselections'}},$field->{'name'});
             }              }
         }          }
     }      }
     #      #
     # Make sure the data we are plotting is there      # Make sure the data we are plotting is there
     my %NeededFields;      my %NeededFields;
     if (exists($ENV{'form.plot'}) && $ENV{'form.plot'} ne '' &&      if (exists($env{'form.plot'}) && $env{'form.plot'} ne '' &&
         $ENV{'form.plot'} ne 'none') {          $env{'form.plot'} ne 'none') {
         if ($ENV{'form.plot'} eq 'degrees') {          if ($env{'form.plot'} eq 'degrees') {
             $NeededFields{'deg_of_diff'}++;              $NeededFields{'deg_of_diff'}++;
             $NeededFields{'deg_of_disc'}++;              $NeededFields{'deg_of_disc'}++;
         } elsif ($ENV{'form.plot'} eq 'tries statistics') {          } elsif ($env{'form.plot'} eq 'tries statistics') {
             $NeededFields{'mean_tries'}++;              $NeededFields{'mean_tries'}++;
             $NeededFields{'std_tries'}++;              $NeededFields{'std_tries'}++;
             $NeededFields{'problem_num'}++;              $NeededFields{'problem_num'}++;
         } else {          } else {
             $NeededFields{$ENV{'form.plot'}}++;              $NeededFields{$env{'form.plot'}}++;
         }          }
     }      }
     #      #
     # This should not happen, but in case it does...      # This should not happen, but in case it does...
     if (ref($ENV{'form.fieldselections'}) ne 'ARRAY') {      if (ref($env{'form.fieldselections'}) ne 'ARRAY') {
         $ENV{'form.fieldselections'} = [$ENV{'form.fieldselections'}];          $env{'form.fieldselections'} = [$env{'form.fieldselections'}];
     }      }
     #      #
     # Set the field data and the selected fields (for easier checking)      # Set the field data and the selected fields (for easier checking)
Line 559  sub parse_field_selection { Line 559  sub parse_field_selection {
             $field->{'selected'} = 'yes';              $field->{'selected'} = 'yes';
             $SelectedFields{$field->{'name'}}++;              $SelectedFields{$field->{'name'}}++;
         }          }
         foreach my $selection (@{$ENV{'form.fieldselections'}}) {          foreach my $selection (@{$env{'form.fieldselections'}}) {
             if ($selection eq $field->{'name'} || $selection eq 'all') {              if ($selection eq $field->{'name'} || $selection eq 'all') {
                 $field->{'selected'} = 'yes';                  $field->{'selected'} = 'yes';
                 $SelectedFields{$field->{'name'}}++;                  $SelectedFields{$field->{'name'}}++;
Line 608  sub CreateInterface { Line 608  sub CreateInterface {
     &parse_field_selection();      &parse_field_selection();
     #      #
     my $Str = '';      my $Str = '';
     $Str .= &Apache::lonhtmlcommon::breadcrumbs      $Str .= &Apache::lonhtmlcommon::breadcrumbs('Overall Problem Statistics',
         (undef,'Overall Problem Statistics','Statistics_Overall_Key');   'Statistics_Overall_Key');
     $Str .= '<table cellspacing="5">'."\n";      $Str .= '<table cellspacing="5">'."\n";
     $Str .= '<tr>';      $Str .= '<tr>';
     $Str .= '<td align="center"><b>'.&mt('Sections').'</b></td>';      $Str .= '<td align="center"><b>'.&mt('Sections').'</b></td>';
Line 661  Main interface to problem statistics. Line 661  Main interface to problem statistics.
 my $navmap;  my $navmap;
 my @sequences;  my @sequences;
   
   sub clean_up {
       undef($navmap);
       undef(@sequences);
   }
   
 sub BuildProblemStatisticsPage {  sub BuildProblemStatisticsPage {
     my ($r,$c)=@_;      my ($r,$c)=@_;
     undef($navmap);      undef($navmap);
Line 686  sub BuildProblemStatisticsPage { Line 691  sub BuildProblemStatisticsPage {
     # Finally let the user know we are here      # Finally let the user know we are here
     my $interface = &CreateInterface($r);      my $interface = &CreateInterface($r);
     $r->print($interface);      $r->print($interface);
     $r->print('<input type="hidden" name="sortby" value="'.$ENV{'form.sortby'}.      $r->print('<input type="hidden" name="sortby" value="'.$env{'form.sortby'}.
               '" />');                '" />');
     #      #
     my @CacheButtonHTML =       my @CacheButtonHTML = 
Line 697  sub BuildProblemStatisticsPage { Line 702  sub BuildProblemStatisticsPage {
     }      }
     #      #
     $r->print($Str);      $r->print($Str);
     if (! exists($ENV{'form.firstrun'})) {      if (! exists($env{'form.firstrun'})) {
         $r->print('<h3>'.          $r->print('<h3>'.
                   &mt('Press "Generate Statistics" when you are ready.').                    &mt('Press "Generate Statistics" when you are ready.').
                   '</h3><p>'.                    '</h3><p>'.
Line 705  sub BuildProblemStatisticsPage { Line 710  sub BuildProblemStatisticsPage {
                       'for the first analysis.  Future analysis this session '.                        'for the first analysis.  Future analysis this session '.
                       ' will not have this delay.').                        ' will not have this delay.').
                   '</p>');                    '</p>');
    &clean_up();
         return;          return;
     }      }
     $r->rflush();      $r->rflush();
Line 713  sub BuildProblemStatisticsPage { Line 719  sub BuildProblemStatisticsPage {
     # it does not slow things down noticably.      # it does not slow things down noticably.
     &Apache::loncoursedata::populate_weight_table();      &Apache::loncoursedata::populate_weight_table();
     #      #
     if (exists($ENV{'form.Excel'})) {      ($navmap,@sequences) = 
           &Apache::lonstatistics::selected_sequences_with_assessments();
       if (! ref($navmap)) {
           $r->print('<h1>'.&mt('A course-wide error occured.').'</h1>'.
                     '<h3>'.$navmap.'</h3>');
    &clean_up();
           return;
       }
       if (exists($env{'form.Excel'})) {
           $r->print('<h4>'.
                     &Apache::lonstatistics::section_and_enrollment_description().
                     '</h4>');
         &Excel_output($r);          &Excel_output($r);
     } else {       } else { 
         $r->print('<input type="submit" name="Excel" value="'.          $r->print('<input type="submit" name="Excel" value="'.
                   &mt('Produce Excel Output').'" />'.'&nbsp;'x5);                    &mt('Produce Excel Output').'" />'.'&nbsp;'x5);
         $r->rflush();          $r->rflush();
           $r->print('<h4>'.
                     &Apache::lonstatistics::section_and_enrollment_description().
                     '</h4>');
         my $count = 0;          my $count = 0;
         ($navmap,@sequences) =   
             &Apache::lonstatistics::selected_sequences_with_assessments();  
         if (! ref($navmap)) {  
             $r->print('<h1>'.&mt('A course-wide error occured.').'</h1>'.  
                       '<h3>'.$navmap.'</h3>');  
             return;  
         }  
         foreach my $seq (@sequences) {          foreach my $seq (@sequences) {
             my @resources =               my @resources = 
                 &Apache::lonstathelpers::get_resources($navmap,$seq);                  &Apache::lonstathelpers::get_resources($navmap,$seq);
Line 742  sub BuildProblemStatisticsPage { Line 755  sub BuildProblemStatisticsPage {
             $r->rflush();              $r->rflush();
         }          }
         #          #
         my $sortby = $ENV{'form.sortby'};          my $sortby = $env{'form.sortby'};
         $sortby = 'container' if (! defined($sortby) || $sortby =~ /^\s*$/);          $sortby = 'container' if (! defined($sortby) || $sortby =~ /^\s*$/);
         my $plot = $ENV{'form.plot'};          my $plot = $env{'form.plot'};
         if ($plot eq '' || $plot eq 'none') {          if ($plot eq '' || $plot eq 'none') {
             undef($plot);              undef($plot);
         }          }
Line 759  sub BuildProblemStatisticsPage { Line 772  sub BuildProblemStatisticsPage {
             &output_sequence_statistics($r);              &output_sequence_statistics($r);
         }          }
     }      }
       &clean_up();
     return;      return;
 }  }
   
Line 819  sub output_html_stats { Line 833  sub output_html_stats {
     my ($r)=@_;      my ($r)=@_;
     &compute_all_statistics($r);      &compute_all_statistics($r);
     $r->print(&html_preamble());      $r->print(&html_preamble());
     &sort_data($ENV{'form.sortby'});      &sort_data($env{'form.sortby'});
     #      #
     my $count=0;      my $count=0;
     foreach my $data (@StatsArray) {      foreach my $data (@StatsArray) {
Line 841  sub output_html_stats { Line 855  sub output_html_stats {
 sub html_preamble {  sub html_preamble {
     my $Str='';      my $Str='';
     $Str .= "<h2>".      $Str .= "<h2>".
         $ENV{'course.'.$ENV{'request.course.id'}.'.description'}.          $env{'course.'.$env{'request.course.id'}.'.description'}.
         "</h2>\n";          "</h2>\n";
     my ($starttime,$endtime) = &Apache::lonstathelpers::get_time_limits();      my ($starttime,$endtime) = &Apache::lonstathelpers::get_time_limits();
     if (defined($starttime) || defined($endtime)) {      if (defined($starttime) || defined($endtime)) {
Line 965  sub sequence_html_output { Line 979  sub sequence_html_output {
 sub make_plot {  sub make_plot {
     my ($r,$plot) = @_;      my ($r,$plot) = @_;
     &compute_all_statistics($r);      &compute_all_statistics($r);
     &sort_data($ENV{'form.sortby'});      &sort_data($env{'form.sortby'});
     if ($plot eq 'degrees') {      if ($plot eq 'degrees') {
         &degrees_plot($r);          &degrees_plot($r);
     } elsif ($plot eq 'tries statistics') {      } elsif ($plot eq 'tries statistics') {
Line 1219  END Line 1233  END
 sub plot_dropdown {  sub plot_dropdown {
     my $current = '';      my $current = '';
     #      #
     if (defined($ENV{'form.plot'})) {      if (defined($env{'form.plot'})) {
         $current = $ENV{'form.plot'};          $current = $env{'form.plot'};
     }      }
     #      #
     my @Additional_Plots = (      my @Additional_Plots = (
Line 1264  sub Excel_output { Line 1278  sub Excel_output {
     &compute_all_statistics($r);      &compute_all_statistics($r);
     my $c = $r->connection;      my $c = $r->connection;
     return if ($c->aborted());      return if ($c->aborted());
       #
       my ($starttime,$endtime) = &Apache::lonstathelpers::get_time_limits();
     ##      ##
     ## Create the excel workbook      ## Create the excel workbook
     my $filename = '/prtspool/'.      my ($excel_workbook,$filename,$format) =
         $ENV{'user.name'}.'_'.$ENV{'user.domain'}.'_'.          &Apache::loncommon::create_workbook($r);
         time.'_'.rand(1000000000).'.xls';      return if (! defined($excel_workbook));
     my ($starttime,$endtime) = &Apache::lonstathelpers::get_time_limits();  
     #  
     # Create sheet  
     my $excel_workbook = Spreadsheet::WriteExcel->new('/home/httpd'.$filename);  
     #  
     # Check for errors  
     if (! defined($excel_workbook)) {  
         $r->log_error("Error creating excel spreadsheet $filename: $!");  
         $r->print(&mt("Problems creating new Excel file.  ".  
                   "This error has been logged.  ".  
                   "Please alert your LON-CAPA administrator."));  
         return 0;  
     }  
     #  
     # The excel spreadsheet stores temporary data in files, then put them  
     # together.  If needed we should be able to disable this (memory only).  
     # The temporary directory must be specified before calling 'addworksheet'.  
     # File::Temp is used to determine the temporary directory.  
     $excel_workbook->set_tempdir($Apache::lonnet::tmpdir);  
     #      #
     # Add a worksheet      # Add a worksheet
     my $sheetname = $ENV{'course.'.$ENV{'request.course.id'}.'.description'};      my $sheetname = $env{'course.'.$env{'request.course.id'}.'.description'};
     if (length($sheetname) > 31) {      if (length($sheetname) > 31) {
         $sheetname = substr($sheetname,0,31);          $sheetname = substr($sheetname,0,31);
     }      }
     my $excel_sheet = $excel_workbook->addworksheet(      my $excel_sheet = $excel_workbook->addworksheet(
         &Apache::loncommon::clean_excel_name($sheetname));          &Apache::loncommon::clean_excel_name($sheetname));
     #  
     my $format = &Apache::loncommon::define_excel_formats($excel_workbook);  
     ##      ##
     ## Begin creating excel sheet      ## Begin creating excel sheet
     ##      ##
Line 1305  sub Excel_output { Line 1300  sub Excel_output {
     #      #
     # Put the course description in the header      # Put the course description in the header
     $excel_sheet->write($rows_output,$cols_output++,      $excel_sheet->write($rows_output,$cols_output++,
                    $ENV{'course.'.$ENV{'request.course.id'}.'.description'},                     $env{'course.'.$env{'request.course.id'}.'.description'},
                         $format->{'h1'});                          $format->{'h1'});
     $cols_output += 3;      $cols_output += 3;
     #      #
     # Put a description of the sections listed      # Put a description of the sections listed
     my $sectionstring = '';      my $sectionstring = '';
     $excel_sheet->write($rows_output,$cols_output++,      $excel_sheet->write($rows_output,$cols_output++,
                         &Apache::lonstathelpers::sections_description                          &Apache::lonstatistics::section_and_enrollment_description('plaintext'),
                             (@Apache::lonstatistics::SelectedSections),  
                         $format->{'h3'});                          $format->{'h3'});
     $cols_output += scalar(@Apache::lonstatistics::SelectedSections);      $cols_output += scalar(&Apache::lonstatistics::get_selected_sections());
     #      #
     # Time restrictions      # Time restrictions
     my $time_string;      my $time_string;
Line 1553  sub get_statistics { Line 1547  sub get_statistics {
     #      #
     my ($starttime,$endtime) = &Apache::lonstathelpers::get_time_limits();      my ($starttime,$endtime) = &Apache::lonstathelpers::get_time_limits();
     my $symb = $resource->symb;      my $symb = $resource->symb;
     my $courseid = $ENV{'request.course.id'};      my $courseid = $env{'request.course.id'};
     #      #
     my $data = &Apache::loncoursedata::get_problem_statistics      my $data = &Apache::loncoursedata::get_problem_statistics
                         (\@Apache::lonstatistics::SelectedSections,                          ([&Apache::lonstatistics::get_selected_sections()],
                          $Apache::lonstatistics::enrollment_status,                           $Apache::lonstatistics::enrollment_status,
                          $symb,$part,$courseid,$starttime,$endtime);                           $symb,$part,$courseid,$starttime,$endtime);
     $data->{'symb'}        = $symb;      $data->{'symb'}        = $symb;
Line 1574  sub get_statistics { Line 1568  sub get_statistics {
     #      #
     # Store in metadata if computations were done for all students      # Store in metadata if computations were done for all students
     if ($data->{'num_students'} > 1) {      if ($data->{'num_students'} > 1) {
         my @Sections = @Apache::lonstatistics::SelectedSections;          my @Sections = &Apache::lonstatistics::get_selected_sections();
         my $sections = '"'.join(' ',@Sections).'"';          my $sections = '"'.join(' ',@Sections).'"';
         $sections =~ s/&+/_/g;  # Ensure no special characters          $sections =~ s/&+/_/g;  # Ensure no special characters
         $data->{'sections'}=$sections;          $data->{'sections'}=$sections;
         $data->{'course'} = $ENV{'request.course.id'};          $data->{'course'} = $env{'request.course.id'};
         my $urlres=(&Apache::lonnet::decode_symb($resource->symb))[2];          my $urlres=(&Apache::lonnet::decode_symb($resource->symb))[2];
         $data->{'urlres'}=$urlres;          $data->{'urlres'}=$urlres;
         my %storestats =           my %storestats = 
Line 1634  sub compute_discrimination_factor { Line 1628  sub compute_discrimination_factor {
     my $ranking =       my $ranking = 
         &Apache::loncoursedata::rank_students_by_scores_on_resources          &Apache::loncoursedata::rank_students_by_scores_on_resources
         (\@Resources,          (\@Resources,
          \@Apache::lonstatistics::SelectedSections,           [&Apache::lonstatistics::get_selected_sections()],
          $Apache::lonstatistics::enrollment_status,undef,           $Apache::lonstatistics::enrollment_status,undef,
          $starttime,$endtime);           $starttime,$endtime, $symb);
     #      #
     # compute their percent scores on the problems in the sequence,      # compute their percent scores on the problems in the sequence,
     my $number_to_grab = int(scalar(@{$ranking})/4);      my $number_to_grab = int(scalar(@{$ranking})/4);
Line 1646  sub compute_discrimination_factor { Line 1640  sub compute_discrimination_factor {
     my @TopSet    =       my @TopSet    = 
         map {           map { 
             $_->[&Apache::loncoursedata::RNK_student()];               $_->[&Apache::loncoursedata::RNK_student()]; 
           } @{$ranking}[($num_students-$number_to_grab)..($num_students-1)];            } @{$ranking}[-$number_to_grab..0];
     if (! @BottomSet || (@BottomSet == 1 && $BottomSet[0] eq '') ||      if (! @BottomSet || (@BottomSet == 1 && $BottomSet[0] eq '') ||
         ! @TopSet    || (@TopSet    == 1 && $TopSet[0]    eq '')) {          ! @TopSet    || (@TopSet    == 1 && $TopSet[0]    eq '')) {
         return 'nan';          return 'nan';
Line 1699  sub compute_sequence_statistics { Line 1693  sub compute_sequence_statistics {
     # First compute statistics based on student scores      # First compute statistics based on student scores
     my ($smin,$smax,$sMean,$sSTD,$scount,$sMAX) =       my ($smin,$smax,$sMean,$sSTD,$scount,$sMAX) = 
         &Apache::loncoursedata::score_stats          &Apache::loncoursedata::score_stats
                     (\@Apache::lonstatistics::SelectedSections,                      ([&Apache::lonstatistics::get_selected_sections()],
                      $Apache::lonstatistics::enrollment_status,                       $Apache::lonstatistics::enrollment_status,
                      \@Resources,$starttime,$endtime,undef);                       \@Resources,$starttime,$endtime,undef);
     $SeqStat{$symb}->{'title'}  = $seq->compTitle;      $SeqStat{$symb}->{'title'}  = $seq->compTitle;
Line 1714  sub compute_sequence_statistics { Line 1708  sub compute_sequence_statistics {
     # 'correct' is taken to mean       # 'correct' is taken to mean 
     my ($cmin,$cmax,$cMean,$cSTD,$ccount)=      my ($cmin,$cmax,$cMean,$cSTD,$ccount)=
         &Apache::loncoursedata::count_stats          &Apache::loncoursedata::count_stats
         (\@Apache::lonstatistics::SelectedSections,          ([&Apache::lonstatistics::get_selected_sections()],
          $Apache::lonstatistics::enrollment_status,           $Apache::lonstatistics::enrollment_status,
          \@Resources,$starttime,$endtime,undef);           \@Resources,$starttime,$endtime,undef);
     my $K = $part_count;      my $K = $part_count;
Removed from v.1.98  
changed lines
  Added in v.1.107

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