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- For 2.11
  - reverse changes in 1.25 - "3.0" grading interface.

    1: # The LearningOnline Network with CAPA
    2: #
    3: # $Id: loncorrectproblemplot.pm,v 1.28.2.1 2012/05/12 03:07:46 raeburn Exp $
    4: #
    5: # Copyright Michigan State University Board of Trustees
    6: #
    7: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
    8: #
    9: # LON-CAPA is free software; you can redistribute it and/or modify
   10: # it under the terms of the GNU General Public License as published by
   11: # the Free Software Foundation; either version 2 of the License, or
   12: # (at your option) any later version.
   13: #
   14: # LON-CAPA is distributed in the hope that it will be useful,
   15: # but WITHOUT ANY WARRANTY; without even the implied warranty of
   16: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   17: # GNU General Public License for more details.
   18: #
   19: # You should have received a copy of the GNU General Public License
   20: # along with LON-CAPA; if not, write to the Free Software
   21: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   22: #
   23: # /home/httpd/html/adm/gpl.txt
   24: #
   25: # http://www.lon-capa.org/
   26: #
   27: 
   28: package Apache::loncorrectproblemplot;
   29: 
   30: use strict;
   31: use Apache::lonnet;
   32: use Apache::loncommon();
   33: use Apache::lonhtmlcommon();
   34: use Apache::loncoursedata();
   35: use Apache::lonstatistics;
   36: use Apache::lonstathelpers;
   37: use Apache::lonlocal;
   38: 
   39: my @SubmitButtons = (
   40:                      { name => 'CreatePlot',
   41:                        text => 'Create Plot' },
   42:                      );
   43: 
   44: #########################################################
   45: #########################################################
   46: 
   47: =pod
   48: 
   49: =item &BuildCorrectProblemsPage
   50: 
   51: Entry point from lonstatistics to the correct problems plot page.
   52: 
   53: =cut
   54: 
   55: #########################################################
   56: #########################################################
   57: 
   58: sub BuildCorrectProblemsPage {
   59:     my ($r,$c)=@_;
   60:     #
   61:     my %Saveable_Parameters = ('Status' => 'scalar',
   62:                                'Section' => 'array',
   63:                                'Groups' => 'array');
   64:     &Apache::loncommon::store_course_settings('correct_problems_plot',
   65:                                               \%Saveable_Parameters);
   66:     &Apache::loncommon::restore_course_settings('correct_problems_plot',
   67:                                                 \%Saveable_Parameters);
   68:     #
   69:     &Apache::lonstatistics::PrepareClasslist();    
   70:     
   71:     $r->print(&Apache::lonhtmlcommon::breadcrumbs('Correct Problems Plot'));
   72:     #
   73:     $r->print(&CreateInterface());
   74:     #
   75:     my @Students = @Apache::lonstatistics::Students;
   76:     #
   77:     if (@Students < 1) {
   78:         $r->print('<h2>'.
   79:                   &mt('There are no students in the sections/groups selected').
   80:                   '</h2>');
   81:     }
   82:     #
   83:     my @CacheButtonHTML = 
   84:         &Apache::lonstathelpers::manage_caches($r,'Statistics','stats_status');
   85:     foreach my $button (@SubmitButtons) {
   86:         $r->print('<input type="submit" name="'.$button->{'name'}.'" '.
   87:                   'value="'.&mt($button->{'text'}).'" />');
   88:         $r->print('&nbsp;'x5);
   89:     }
   90:     foreach my $html (@CacheButtonHTML) {
   91:         $r->print($html.('&nbsp;'x5));
   92:     }
   93:     $r->rflush();
   94:     #
   95:     # Determine which problem symbs we are to sum over
   96:     if (exists($env{'form.CreatePlot'})) {
   97:         my @ProblemSymbs;
   98:         my $total_weights = 0;
   99:         my $title = '';
  100:         my @maps = &Apache::lonstatistics::get_selected_maps('Maps');
  101:         my ($navmap,@sequences) =
  102:             &Apache::lonstatistics::selected_sequences_with_assessments();
  103:         if ($maps[0] ne 'all') {
  104:             foreach my $seq (@sequences) {
  105:                 if ($title eq '') {
  106:                     $title = $seq->compTitle;
  107:                 } else {
  108:                     $title = 'Multiple Sequences';
  109:                 }
  110:             }
  111:         } else {
  112:             $title = 'All Problems';
  113:         }
  114:         foreach my $seq (@sequences) {
  115:             my @resources = 
  116:                 &Apache::lonstathelpers::get_resources($navmap,$seq);
  117:             foreach my $res (@resources) {
  118:                 foreach my $partid (@{$res->parts}) {
  119:                     push(@ProblemSymbs,{symb=>$res->symb,
  120:                                         part=>$partid});
  121:                     $total_weights += 
  122:                         &Apache::lonnet::EXT('resource.'.$partid.'.weight',
  123:                                              $res->symb,
  124:                                              undef,undef,undef);
  125:                 }
  126:             }
  127:         }
  128:         $r->print('<p>'.
  129:                   &Apache::lonstatistics::section_and_enrollment_description().
  130:                   '</p>');
  131:         my ($starttime,$endtime) = &Apache::lonstathelpers::get_time_limits();
  132:         if (defined($starttime) || defined($endtime)) {
  133:             # Inform the user what the time limits on the data are.
  134:             $r->print(&mt('Statistics on submissions from [_1] to [_2]',
  135:                           &Apache::lonlocal::locallocaltime($starttime),
  136:                           &Apache::lonlocal::locallocaltime($endtime)));
  137:         }
  138:         &Apache::loncoursedata::populate_weight_table();
  139:         my $score_data = &Apache::loncoursedata::get_student_scores
  140:             ([&Apache::lonstatistics::get_selected_sections()],
  141:              [&Apache::lonstatistics::get_selected_groups()],
  142:              \@ProblemSymbs,
  143:              $Apache::lonstatistics::enrollment_status,undef,
  144:              $starttime,$endtime);
  145:         $r->print(&AnalyzeScoreData($score_data,$title,$total_weights));
  146:     } else {
  147:         $r->print('<p>'.&mt('Make a sequence selection from the "Sequences and Folders" menu and hit "Create Plot" to begin').'</p>');
  148:     }
  149:     return;
  150: }
  151: 
  152: #########################################################
  153: #########################################################
  154: 
  155: =pod
  156: 
  157: =item & AnalyzeScoreData($score_data)
  158: 
  159: Analyze the result of &Apache::loncoursedata::get_student_scores() and
  160: return html with a plot of the data and a table of the values and bins.
  161: 
  162: =cut
  163: 
  164: #########################################################
  165: #########################################################
  166: sub AnalyzeScoreData {
  167:     my ($score_data,$title,$maximum) = @_;
  168:     #
  169:     # Basic check first
  170:     if (ref($score_data) ne 'ARRAY' || @$score_data < 1) {
  171:         return '<p class="LC_warning">'.&mt('There is no data to plot').'</p>';
  172:     }
  173:     #
  174:     # Determine which bins to use
  175:     my $lowest  = $score_data->[0]->[0];
  176:     $lowest = 0;
  177:     my $highest = $score_data->[-1]->[0];
  178:     my $binsize = 1;
  179:     if ($highest > 50) { $binsize = 2; }
  180:     if ($highest > 100) { $binsize = 5; }
  181:     if ($highest > 200) { $binsize = 10; }
  182:     if ($highest > 500) { $binsize = 20; }
  183:     if ($highest > 1000) { $binsize = 50; }
  184:     if ($highest > 2000) { $binsize = 100; }
  185:     #
  186:     # Get the data into the bins (destroying $score_data in the process)
  187:     my @Bins = &bin_data($score_data,$binsize,$lowest,$highest);
  188:     my @Xdata; my @Ydata; my $max;
  189:     my $Str = 
  190:         '<p>'.
  191:         &mt('Problem weights do not reflect individual student settings.')
  192:         .'</p>'.
  193:         &Apache::loncommon::start_data_table().
  194:         &Apache::loncommon::start_data_table_header_row().
  195:         '<th>'.&mt('Range').'</th><th>'.&mt('Count').'</th>'.
  196:         &Apache::loncommon::end_data_table_header_row();
  197:     my $sum = 0;
  198:     while (my $bin = shift(@Bins)) {
  199:         push (@Xdata,$bin->{'start'});
  200:         push (@Ydata,$bin->{'count'});
  201:         $sum += $bin->{'count'};
  202:         if ($bin->{'count'} > $max) {
  203:             $max = $bin->{'count'};
  204:         }
  205:         $Str.= &Apache::loncommon::start_data_table_row().
  206:             '<td>'.$bin->{'start'}.' - '.$bin->{'end'}.'</td>'.
  207:             '<td>'.$bin->{'count'}.'</td>'.
  208:             &Apache::loncommon::end_data_table_row().'<br>';
  209:     }
  210:     # scale max to an integer.
  211:     $max = 5*(int($max/5)+1);
  212:     $Str .= &Apache::loncommon::end_data_table()."<br />\n";
  213:     $title = &HTML::Entities::decode($title);
  214:     $Str = "\n<p>".
  215:         &Apache::loncommon::DrawBarGraph($title.' ('.$sum.' students)',
  216:                               'Correct Problems (max possible = '.$maximum.')',
  217:                                          'Number of students',
  218:                                          $max,undef, # colors
  219:                                          \@Xdata,\@Ydata).
  220:                                          "\n<br />\n".$Str;
  221:     $Str .= '</p>'."\n";
  222:     return $Str;                                               
  223: }
  224: 
  225: 
  226: #########################################################
  227: #########################################################
  228: 
  229: =pod
  230: 
  231: =item &bin_data($data,$binsize,$startbin,$endbin)
  232: 
  233: Note: This routine destroys the array of data passed to it.
  234: 
  235: Inputs: $data: array reference - the contents of @$data must
  236:         be arrays with x and y data.  $data = [ [x1,y1],[x2,y2],...];
  237:         $binsize: Width of bins to put data in
  238:         $startbin: the starting bin.
  239:         $endbin: the ending bin.
  240: Returns: Array of Bins.  Each bin is a hash reference with the following
  241:          keys: 'start', 'count', and 'end'.
  242: 
  243: =cut
  244: 
  245: #########################################################
  246: #########################################################
  247: sub bin_data {
  248:     my ($data,$binsize,$startbin,$endbin)=@_;
  249:     return () if (! defined($data) || ref($data) ne 'ARRAY');
  250:     #
  251:     # Determine bin geometry
  252:     my $binstart = $startbin;
  253:     my $binend = $startbin+$binsize;
  254:     # put the data into bins
  255:     my @Bins;
  256:     my $count=0;
  257:     my $idx=0;
  258:     while ($idx < scalar(@$data) && ($endbin-$binend + $binsize)>=0) {
  259:         my $dataset = $data->[$idx++];
  260:         my ($x,$y) = @{$dataset};
  261:         while ($x > ($binend-.001)) {
  262:             # store the old data
  263:             push (@Bins,{ start => $binstart,
  264:                           count => $count,
  265:                           end   => $binend });
  266:             # start counting again
  267:             $binstart += $binsize;
  268:             $binend += $binsize;
  269:             $count = 0;
  270:         }
  271:         $count+=$y;
  272:     }
  273:     if ($count > 0) {
  274:         push (@Bins,{ start => $binstart,
  275:                       count => $count,
  276:                       end   => $binend });
  277:     }
  278:     return @Bins;
  279: }
  280: 
  281: #########################################################
  282: #########################################################
  283: 
  284: =pod
  285: 
  286: =item &CreateInterface
  287: 
  288: Inputs: none.
  289: 
  290: Returns: HTML for the correct problems plot interface.
  291: 
  292: =cut
  293: 
  294: #########################################################
  295: #########################################################
  296: sub CreateInterface {
  297:     ##
  298:     ## Environment variable initialization
  299:     my $Str;
  300:     $Str .= '<p>';
  301:     #
  302:     $Str .= &Apache::loncommon::start_data_table();
  303:     $Str .= &Apache::loncommon::start_data_table_header_row();
  304:     $Str .= '<th>'.&mt('Sections').'</th>';
  305:     $Str .= '<th>'.&mt('Groups').'</th>';
  306:     $Str .= '<th>'.&mt('Access Status').'</th>';
  307:     $Str .= '<th>'.&mt('Sequences and Folders').'</th>';
  308:     $Str .= '<th>'.&mt('Time Period').'</th>';
  309:     $Str .= &Apache::loncommon::end_data_table_header_row();
  310:     #
  311:     $Str .= &Apache::loncommon::start_data_table_row();
  312:     $Str .= '<td align="center" valign="top">'."\n";
  313:     $Str .= &Apache::lonstatistics::SectionSelect('Section','multiple',5);
  314:     $Str .= '</td>';
  315:     #
  316:     $Str .= '<td align="center" valign="top">'."\n";
  317:     $Str .= &Apache::lonstatistics::GroupSelect('Group','multiple',5);
  318:     $Str .= '</td>';
  319:     $Str .= '<td align="center" valign="top">';
  320:     $Str .= &Apache::lonhtmlcommon::StatusOptions(undef,undef,5);
  321:     $Str .= '</td>'."\n";
  322:     #
  323:     $Str .= '<td align="center" valign="top">'."\n";
  324:     $Str .= &Apache::lonstatistics::map_select('Maps','multiple,all',5);
  325:     $Str .= '</td>';
  326:     #
  327:     $Str .= '<td align="center" valign="top">'."\n";
  328:     $Str .= &Apache::lonstathelpers::limit_by_time_form();
  329:     $Str .= '</td>';
  330:     #
  331:     $Str .= &Apache::loncommon::end_data_table_row();
  332:     $Str .= &Apache::loncommon::end_data_table();
  333:     ##
  334:     return $Str;
  335: }
  336: 
  337: 1;
  338: 
  339: __END__