Annotation of loncom/interface/statistics/lonstudentassessment.pm, revision 1.54

1.1       stredwic    1: # The LearningOnline Network with CAPA
                      2: #
1.54    ! matthew     3: # $Id: lonstudentassessment.pm,v 1.53 2003/06/07 14:45:41 matthew Exp $
1.1       stredwic    4: #
                      5: # Copyright Michigan State University Board of Trustees
                      6: #
                      7: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
                      8: # LON-CAPA is free software; you can redistribute it and/or modify
                      9: # it under the terms of the GNU General Public License as published by
                     10: # the Free Software Foundation; either version 2 of the License, or
                     11: # (at your option) any later version.
                     12: #
                     13: # LON-CAPA is distributed in the hope that it will be useful,
                     14: # but WITHOUT ANY WARRANTY; without even the implied warranty of
                     15: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
                     16: # GNU General Public License for more details.
                     17: #
                     18: # You should have received a copy of the GNU General Public License
                     19: # along with LON-CAPA; if not, write to the Free Software
                     20: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
                     21: #
                     22: # /home/httpd/html/adm/gpl.txt
                     23: #
                     24: # http://www.lon-capa.org/
                     25: #
                     26: # (Navigate problems for statistical reports
1.28      matthew    27: #
                     28: #######################################################
                     29: #######################################################
                     30: 
                     31: =pod
                     32: 
                     33: =head1 NAME
                     34: 
                     35: lonstudentassessment
                     36: 
                     37: =head1 SYNOPSIS
                     38: 
                     39: Presents assessment data about a student or a group of students.
                     40: 
                     41: =head1 Subroutines
                     42: 
                     43: =over 4 
                     44: 
                     45: =cut
                     46: 
                     47: #######################################################
                     48: #######################################################
1.1       stredwic   49: 
1.21      minaeibi   50: package Apache::lonstudentassessment;
1.1       stredwic   51: 
                     52: use strict;
1.28      matthew    53: use Apache::lonstatistics;
1.1       stredwic   54: use Apache::lonhtmlcommon;
                     55: use Apache::loncoursedata;
1.28      matthew    56: use Apache::lonnet; # for logging porpoises
1.31      matthew    57: use Spreadsheet::WriteExcel;
                     58: 
                     59: #######################################################
                     60: #######################################################
                     61: =pod
                     62: 
                     63: =item Package Variables
                     64: 
                     65: =over 4
                     66: 
                     67: =item $Statistics Hash ref to store student data.  Indexed by symb,
                     68:       contains hashes with keys 'score' and 'max'.
                     69: 
                     70: =cut
                     71: 
                     72: #######################################################
                     73: #######################################################
1.1       stredwic   74: 
1.30      matthew    75: my $Statistics;
                     76: 
1.28      matthew    77: #######################################################
                     78: #######################################################
                     79: 
                     80: =pod
                     81: 
1.31      matthew    82: =item $show_links 'yes' or 'no' for linking to student performance data
                     83: 
                     84: =item $output_mode 'html', 'excel', or 'csv' for output mode
                     85: 
1.32      matthew    86: =item $show 'all', 'totals', or 'scores' determines how much data is output
1.31      matthew    87: 
1.54    ! matthew    88: =item $data  determines what performance data is shown
        !            89: 
        !            90: =item $datadescription A short description of the output data selected.
        !            91: 
        !            92: =item $base 'tries' or 'scores' determines the base of the performance shown
        !            93: 
1.49      matthew    94: =item $single_student_mode evaluates to true if we are showing only one
                     95: student.
                     96: 
1.31      matthew    97: =cut
                     98: 
                     99: #######################################################
                    100: #######################################################
                    101: my $show_links;
                    102: my $output_mode;
1.54    ! matthew   103: my $data;
        !           104: my $base;
        !           105: my $datadescription;
1.49      matthew   106: my $single_student_mode;
1.28      matthew   107: 
1.31      matthew   108: #######################################################
                    109: #######################################################
                    110: # End of package variable declarations
1.28      matthew   111: 
1.31      matthew   112: =pod
1.28      matthew   113: 
1.31      matthew   114: =back
1.28      matthew   115: 
1.31      matthew   116: =cut
1.28      matthew   117: 
1.31      matthew   118: #######################################################
                    119: #######################################################
1.28      matthew   120: 
1.31      matthew   121: =pod
1.28      matthew   122: 
1.31      matthew   123: =item &BuildStudentAssessmentPage()
1.28      matthew   124: 
1.31      matthew   125: Inputs: 
1.4       stredwic  126: 
1.31      matthew   127: =over 4
1.28      matthew   128: 
                    129: =item $r Apache Request
                    130: 
                    131: =item $c Apache Connection 
                    132: 
                    133: =back
                    134: 
                    135: =cut
                    136: 
                    137: #######################################################
                    138: #######################################################
1.1       stredwic  139: sub BuildStudentAssessmentPage {
1.30      matthew   140:     my ($r,$c)=@_;
                    141:     undef($Statistics);
1.49      matthew   142:     $single_student_mode = 1 if ($ENV{'form.SelectedStudent'});
1.30      matthew   143:     #
1.31      matthew   144:     # Print out the HTML headers for the interface
                    145:     #    This also parses the output mode selector
1.54    ! matthew   146:     #    This step must *always* be done.
1.30      matthew   147:     $r->print(&CreateInterface());
1.31      matthew   148:     $r->print('<input type="hidden" name="notfirstrun" value="true" />');
1.49      matthew   149:     $r->print('<input type="hidden" name="sort" value="'.
                    150:               $ENV{'form.sort'}.'" />');
1.7       stredwic  151:     $r->rflush();
1.49      matthew   152:     if (! exists($ENV{'form.notfirstrun'}) && ! $single_student_mode) {
1.31      matthew   153:         $r->print(<<ENDMSG);
                    154: <p>
1.48      matthew   155: <font size="+2">
1.31      matthew   156: Please make your selections in the boxes above and hit 
                    157: the button marked &quot;Update&nbsp;Display&quot;.
                    158: </font>
                    159: </p>
                    160: ENDMSG
1.33      matthew   161: #        $r->print(&OutputDescriptions());
1.31      matthew   162:         return;
                    163:     }
                    164:     #
                    165:     my $initialize     = \&html_initialize;
                    166:     my $output_student = \&html_outputstudent;
                    167:     my $finish         = \&html_finish;
                    168:     #
                    169:     if ($output_mode eq 'excel') {
                    170:         $initialize     = \&excel_initialize;
                    171:         $output_student = \&excel_outputstudent;
                    172:         $finish         = \&excel_finish;
                    173:     } elsif ($output_mode eq 'csv') {
                    174:         $initialize     = \&csv_initialize;
                    175:         $output_student = \&csv_outputstudent;
                    176:         $finish         = \&csv_finish;
                    177:     }
1.30      matthew   178:     #
                    179:     if($c->aborted()) {  return ; }
1.31      matthew   180:     #
1.49      matthew   181:     # Determine which students we want to look at
                    182:     my @Students;
                    183:     if ($single_student_mode) {
                    184:         @Students = (&Apache::lonstatistics::current_student());
                    185:         $r->print(&next_and_previous_buttons());
                    186:         $r->rflush();
                    187:     } else {
                    188:         @Students = @Apache::lonstatistics::Students;
                    189:     }
                    190:     #
1.31      matthew   191:     # Call the initialize routine selected above
                    192:     $initialize->($r);
1.49      matthew   193:     foreach my $student (@Students) {
1.31      matthew   194:         if($c->aborted()) { 
                    195:             $finish->($r);
                    196:             return ; 
1.1       stredwic  197:         }
1.31      matthew   198:         # Call the output_student routine selected above
                    199:         $output_student->($r,$student);
                    200:     }
                    201:     # Call the "finish" routine selected above
                    202:     $finish->($r);
                    203:     #
                    204:     return;
                    205: }
                    206: 
                    207: #######################################################
                    208: #######################################################
1.49      matthew   209: sub next_and_previous_buttons {
                    210:     my $Str = '';
                    211:     $Str .= '<input type="hidden" name="SelectedStudent" value="'.
                    212:         $ENV{'form.SelectedStudent'}.'" />';
                    213:     #
                    214:     # Build the previous student link
                    215:     my $previous = &Apache::lonstatistics::previous_student();
                    216:     my $previousbutton = '';
                    217:     if (defined($previous)) {
                    218:         my $sname = $previous->{'username'}.':'.$previous->{'domain'};
                    219:         $previousbutton .= '<input type="button" value="'.
                    220:             'Previous Student ('.
                    221:             $previous->{'username'}.'@'.$previous->{'domain'}.')'.
                    222:             '" onclick="document.Statistics.SelectedStudent.value='.
                    223:             "'".$sname."'".';'.
                    224:             'document.Statistics.submit();" />';
                    225:     } else {
                    226:         $previousbutton .= '<input type="button" value="'.
                    227:             'Previous student (none)'.'" />';
                    228:     }
                    229:     #
                    230:     # Build the next student link
                    231:     my $next = &Apache::lonstatistics::next_student();
                    232:     my $nextbutton = '';
                    233:     if (defined($next)) {
                    234:         my $sname = $next->{'username'}.':'.$next->{'domain'};
                    235:         $nextbutton .= '<input type="button" value="'.
                    236:             'Next Student ('.
                    237:             $next->{'username'}.'@'.$next->{'domain'}.')'.
                    238:             '" onclick="document.Statistics.SelectedStudent.value='.
                    239:             "'".$sname."'".';'.
                    240:             'document.Statistics.submit();" />';
                    241:     } else {
                    242:         $nextbutton .= '<input type="button" value="'.
                    243:             'Next student (none)'.'" />';
                    244:     }
                    245:     #
                    246:     # Build the 'all students' button
                    247:     my $all = '';
                    248:     $all .= '<input type="button" value="All Students" '.
                    249:             '" onclick="document.Statistics.SelectedStudent.value='.
                    250:             "''".';'.'document.Statistics.submit();" />';
                    251:     $Str .= $previousbutton.('&nbsp;'x5).$all.('&nbsp;'x5).$nextbutton;
                    252:     return $Str;
                    253: }
                    254: 
                    255: #######################################################
                    256: #######################################################
1.30      matthew   257: 
1.31      matthew   258: sub get_student_fields_to_show {
                    259:     my @to_show = @Apache::lonstatistics::SelectedStudentData;
                    260:     foreach (@to_show) {
                    261:         if ($_ eq 'all') {
                    262:             @to_show = @Apache::lonstatistics::StudentDataOrder;
                    263:             last;
                    264:         }
                    265:     }
                    266:     return @to_show;
                    267: }
                    268: 
1.28      matthew   269: #######################################################
                    270: #######################################################
                    271: 
                    272: =pod
1.2       stredwic  273: 
1.28      matthew   274: =item &CreateInterface()
1.21      minaeibi  275: 
1.28      matthew   276: Called by &BuildStudentAssessmentPage to create the top part of the
                    277: page which displays the chart.
                    278: 
1.30      matthew   279: Inputs: None
1.28      matthew   280: 
                    281: Returns:  A string containing the HTML for the headers and top table for 
                    282: the chart page.
                    283: 
                    284: =cut
                    285: 
                    286: #######################################################
                    287: #######################################################
1.2       stredwic  288: sub CreateInterface {
1.4       stredwic  289:     my $Str = '';
1.30      matthew   290: #    $Str .= &CreateLegend();
                    291:     $Str .= '<table cellspacing="5">'."\n";
                    292:     $Str .= '<tr>';
                    293:     $Str .= '<td align="center"><b>Sections</b></td>';
                    294:     $Str .= '<td align="center"><b>Student Data</b></td>';
1.46      matthew   295:     $Str .= '<td align="center"><b>Enrollment Status</b></td>';
1.41      matthew   296:     $Str .= '<td align="center"><b>Sequences and Folders</b></td>';
1.31      matthew   297:     $Str .= '<td align="center"><b>Output Format</b></td>';
1.54    ! matthew   298:     $Str .= '<td align="center"><b>Output Data</b></td>';
1.30      matthew   299:     $Str .= '</tr>'."\n";
                    300:     #
1.4       stredwic  301:     $Str .= '<tr><td align="center">'."\n";
1.29      matthew   302:     $Str .= &Apache::lonstatistics::SectionSelect('Section','multiple',5);
1.4       stredwic  303:     $Str .= '</td><td align="center">';
1.30      matthew   304:     my $only_seq_with_assessments = sub { 
                    305:         my $s=shift;
                    306:         if ($s->{'num_assess'} < 1) { 
                    307:             return 0;
                    308:         } else { 
                    309:             return 1;
                    310:         }
                    311:     };
                    312:     $Str .= &Apache::lonstatistics::StudentDataSelect('StudentData','multiple',
                    313:                                                       5,undef);
1.46      matthew   314:     $Str .= '</td><td>'."\n";
                    315:     $Str .= &Apache::lonhtmlcommon::StatusOptions(undef,undef,5);
1.4       stredwic  316:     $Str .= '</td><td>'."\n";
1.30      matthew   317:     $Str .= &Apache::lonstatistics::MapSelect('Maps','multiple,all',5,
                    318:                                               $only_seq_with_assessments);
1.31      matthew   319:     $Str .= '</td><td>'."\n";
                    320:     $Str .= &CreateAndParseOutputSelector();
1.54    ! matthew   321:     $Str .= '</td><td>'."\n";
        !           322:     $Str .= &CreateAndParseOutputDataSelector();
1.30      matthew   323:     $Str .= '</td></tr>'."\n";
                    324:     $Str .= '</table>'."\n";
1.4       stredwic  325:     return $Str;
1.1       stredwic  326: }
1.30      matthew   327: 
                    328: #######################################################
                    329: #######################################################
                    330: 
                    331: =pod
                    332: 
1.31      matthew   333: =item &CreateAndParseOutputSelector()
1.30      matthew   334: 
                    335: =cut
                    336: 
                    337: #######################################################
                    338: #######################################################
1.32      matthew   339: my @OutputOptions = 
                    340:     ({ name  => 'HTML, with links',
                    341:        value => 'html, with links',
1.33      matthew   342:        description => 'Output HTML with each symbol linked to the problem '.
1.35      matthew   343: 	   'which generated it.',
                    344:        mode => 'html',
                    345:        show_links => 'yes',
                    346:        },
1.47      matthew   347:      { name  => 'HTML, with all links',
                    348:        value => 'html, with all links',
                    349:        description => 'Output HTML with each symbol linked to the problem '.
                    350: 	   'which generated it.  '.
                    351:            'This includes links for unattempted problems.',
                    352:        mode => 'html',
                    353:        show_links => 'all',
                    354:        },
1.32      matthew   355:      { name  => 'HTML, without links',
                    356:        value => 'html, without links',
1.33      matthew   357:        description => 'Output HTML.  By not including links, the size of the'.
                    358: 	   ' web page is greatly reduced.  If your browser crashes on the '.
1.35      matthew   359: 	   'full display, try this.',
                    360:        mode => 'html',
                    361:        show_links => 'no',
                    362:            },
1.54    ! matthew   363:      { name  => 'Excel',
        !           364:        value => 'excel',
        !           365:        description => 'Output an Excel file (compatable with Excel 95).',
1.35      matthew   366:        mode => 'excel',
                    367:        show_links => 'no',
1.54    ! matthew   368:    },
1.48      matthew   369: #     { name  => 'multi-sheet Excel',
                    370: #       value => 'multi-sheet excel',
                    371: #       description => 'Output an Excel file (compatable with Excel 95), '.
                    372: #	   'with a seperate worksheet for each sequence you have selected '.
                    373: #           'the data for each problem part '.
                    374: #           '(number of tries, status, points awarded) will be listed.',
                    375: #       mode => 'multi-sheet excel',
                    376: #       show_links => 'no',
                    377: #           },
                    378: #     { name  => 'multi-sheet Excel, by section',
                    379: #       value => 'multi-sheet excel, by section',
                    380: #       description => 'Output an Excel file (compatable with Excel 95), '.
                    381: #	   'with a seperate worksheet for each sequence you have selected '.
                    382: #           'the data for each problem part '.
                    383: #           '(number of tries, status, points awarded) will be listed.  '.
                    384: #           'There will be one Excel workbook for each section selected.',
                    385: #       mode => 'multi-sheet excel',
                    386: #       show_links => 'no',
                    387: #           },
1.54    ! matthew   388:      { name  => 'CSV',
        !           389:        value => 'csv',
        !           390:        description => 'Output a comma seperated values file suitable for '.
        !           391:            'import into a spreadsheet.',
1.35      matthew   392:        mode => 'csv',
                    393:        show_links => 'no',
                    394:            },
1.32      matthew   395:      );
                    396: 
1.33      matthew   397: sub OutputDescriptions {
                    398:     my $Str = '';
                    399:     $Str .= "<h2>Output Modes</h2>\n";
                    400:     $Str .= "<dl>\n";
                    401:     foreach my $outputmode (@OutputOptions) {
                    402: 	$Str .="    <dt>".$outputmode->{'name'}."</dt>\n";
                    403: 	$Str .="        <dd>".$outputmode->{'description'}."</dd>\n";
                    404:     }
                    405:     $Str .= "</dl>\n";
                    406:     return $Str;
                    407: }
                    408: 
1.31      matthew   409: sub CreateAndParseOutputSelector {
                    410:     my $Str = '';
1.44      matthew   411:     my $elementname = 'chartoutputmode';
1.31      matthew   412:     #
                    413:     # Format for output options is 'mode, restrictions';
1.50      matthew   414:     my $selected = 'html, without links';
1.31      matthew   415:     if (exists($ENV{'form.'.$elementname})) {
                    416:         if (ref($ENV{'form.'.$elementname} eq 'ARRAY')) {
                    417:             $selected = $ENV{'form.'.$elementname}->[0];
                    418:         } else {
                    419:             $selected = $ENV{'form.'.$elementname};
                    420:         }
                    421:     }
                    422:     #
                    423:     # Set package variables describing output mode
                    424:     $show_links  = 'no';
                    425:     $output_mode = 'html';
1.35      matthew   426:     foreach my $option (@OutputOptions) {
                    427:         next if ($option->{'value'} ne $selected);
                    428:         $output_mode = $option->{'mode'};
                    429:         $show_links  = $option->{'show_links'};
1.31      matthew   430:     }
1.35      matthew   431: 
1.31      matthew   432:     #
                    433:     # Build the form element
                    434:     $Str = qq/<select size="5" name="$elementname">/;
1.32      matthew   435:     foreach my $option (@OutputOptions) {
                    436:         $Str .= "\n".'    <option value="'.$option->{'value'}.'"';
                    437:         $Str .= " selected " if ($option->{'value'} eq $selected);
                    438:         $Str .= ">".$option->{'name'}."<\/option>";
1.31      matthew   439:     }
                    440:     $Str .= "\n</select>";
                    441:     return $Str;
                    442: }
1.30      matthew   443: 
1.54    ! matthew   444: ##
        !           445: ## Data selector stuff
        !           446: ##
        !           447: my @OutputDataOptions =
        !           448:     ( { name  =>'Tries',
        !           449:         base  =>'tries',
        !           450:         value => 'tries',
        !           451:         shortdesc => 'Number of Tries before success on each Problem Part',
        !           452:         longdesc =>'The number of tries before success on each problem part.',
        !           453:         },
        !           454:       { name  =>'Parts Correct',
        !           455:         base  =>'tries',
        !           456:         value => 'parts correct',
        !           457:         shortdesc => 'Number of Problem Parts completed successfully.',
        !           458:         longdesc => 'The Number of Problem Parts completed successfully.',
        !           459:         },
        !           460:       { name  =>'Parts Correct & Maximums',
        !           461:         base  =>'tries',
        !           462:         value => 'parts correct total',
        !           463:         shortdesc => 'Number of Problem Parts completed successfully.',
        !           464:         longdesc => 'The Number of Problem Parts completed successfully and '.
        !           465:             'the maximum possible for each student',
        !           466:         },
        !           467:       { name  => 'Scores',
        !           468:         base  => 'scores',
        !           469:         value => 'scores',
        !           470:         shortdesc => 'Score on each Problem Part',
        !           471:         longdesc =>'The students score on each problem part, computed as'.
        !           472:             'the part weight * part awarded',
        !           473:         },
        !           474:       { name  => 'Scores Sum',
        !           475:         base  => 'scores',
        !           476:         value => 'sum only',
        !           477:         shortdesc => 'Sum of Scores on each Problem Part',
        !           478:         longdesc =>'The total of the scores of the student on each problem'.
        !           479:             ' part in the sequences or folders selected.',
        !           480:         },
        !           481:       { name  => 'Scores Sum & Maximums',
        !           482:         base  => 'scores',
        !           483:         value => 'sum and total',
        !           484:         shortdesc => 'Total Score and Maximum Possible for each '.
        !           485:             'Sequence or Folder',
        !           486:         longdesc => 'The total of the scores of the student on each problem'.
        !           487:             ' and the maximum possible for that student on each Sequence or '.
        !           488:             ' Folder.',
        !           489:         },
        !           490:       { name  => 'Summary Table (Scores)',
        !           491:         base  => 'scores',
        !           492:         value => 'final table scores',
        !           493:         shortdesc => 'Summary of Scores',
        !           494:         longdesc  => '',
        !           495:         },
        !           496:       { name  => 'Summary Table (Parts)',
        !           497:         base  => 'tries',
        !           498:         value => 'final table parts',
        !           499:         shortdesc => 'Summary of Parts Correct',
        !           500:         longdesc  => '',
        !           501:         }
        !           502:       );
        !           503: 
        !           504: sub CreateAndParseOutputDataSelector {
        !           505:     my $Str = '';
        !           506:     my $elementname = 'chartoutputdata';
        !           507:     #
        !           508:     my $selected = 'scores';
        !           509:     if (exists($ENV{'form.'.$elementname})) {
        !           510:         if (ref($ENV{'form.'.$elementname} eq 'ARRAY')) {
        !           511:             $selected = $ENV{'form.'.$elementname}->[0];
        !           512:         } else {
        !           513:             $selected = $ENV{'form.'.$elementname};
        !           514:         }
        !           515:     }
        !           516:     #
        !           517:     $data = 'scores';
        !           518:     foreach my $option (@OutputDataOptions) {
        !           519:         if ($option->{'value'} eq $selected) {
        !           520:             $data = $option->{'value'};
        !           521:             $base = $option->{'base'};
        !           522:             $datadescription = $option->{'shortdesc'};
        !           523:         }
        !           524:     }
        !           525:     #
        !           526:     # Build the form element
        !           527:     $Str = qq/<select size="5" name="$elementname">/;
        !           528:     foreach my $option (@OutputDataOptions) {
        !           529:         $Str .= "\n".'    <option value="'.$option->{'value'}.'"';
        !           530:         $Str .= " selected " if ($option->{'value'} eq $data);
        !           531:         $Str .= ">".$option->{'name'}."<\/option>";
        !           532:     }
        !           533:     $Str .= "\n</select>";
        !           534:     return $Str;
        !           535: 
        !           536: }
        !           537: 
1.28      matthew   538: #######################################################
                    539: #######################################################
1.1       stredwic  540: 
1.28      matthew   541: =pod
                    542: 
1.31      matthew   543: =head2 HTML output routines
1.28      matthew   544: 
1.31      matthew   545: =item &html_initialize($r)
1.28      matthew   546: 
1.31      matthew   547: Create labels for the columns of student data to show.
1.28      matthew   548: 
1.31      matthew   549: =item &html_outputstudent($r,$student)
1.28      matthew   550: 
1.31      matthew   551: Return a line of the chart for a student.
1.28      matthew   552: 
1.31      matthew   553: =item &html_finish($r)
1.28      matthew   554: 
                    555: =cut
                    556: 
                    557: #######################################################
                    558: #######################################################
1.31      matthew   559: {
                    560:     my $padding;
                    561:     my $count;
                    562: 
1.39      matthew   563:     my $nodata_count; # The number of students for which there is no data
                    564:     my %prog_state;   # progress state used by loncommon PrgWin routines
                    565: 
1.31      matthew   566: sub html_initialize {
                    567:     my ($r) = @_;
1.30      matthew   568:     #
                    569:     $padding = ' 'x3;
1.35      matthew   570:     $count = 0;
1.39      matthew   571:     $nodata_count = 0;
1.30      matthew   572:     #
1.38      matthew   573:     $r->print("<h3>".$ENV{'course.'.$ENV{'request.course.id'}.'.description'}.
                    574:               "&nbsp;&nbsp;".localtime(time)."</h3>");
1.39      matthew   575: 
1.54    ! matthew   576:     $r->print("<h3>".$datadescription."</h3>");        
1.39      matthew   577:     #
                    578:     # Set up progress window for 'final table' display only
1.54    ! matthew   579:     if ($data =~ /^final table/) {
1.39      matthew   580:         my $studentcount = scalar(@Apache::lonstatistics::Students); 
                    581:         %prog_state=&Apache::lonhtmlcommon::Create_PrgWin
                    582:             ($r,'Summary Table Status',
                    583:              'Summary Table Compilation Progress', $studentcount);
                    584:     }
1.31      matthew   585:     my $Str = "<pre>\n";
1.30      matthew   586:     # First, the @StudentData fields need to be listed
1.31      matthew   587:     my @to_show = &get_student_fields_to_show();
1.30      matthew   588:     foreach my $field (@to_show) {
                    589:         my $title=$Apache::lonstatistics::StudentData{$field}->{'title'};
                    590:         my $base =$Apache::lonstatistics::StudentData{$field}->{'base_width'};
                    591:         my $width=$Apache::lonstatistics::StudentData{$field}->{'width'};
                    592:         $Str .= $title.' 'x($width-$base).$padding;
                    593:     }
                    594:     # Now the selected sequences need to be listed
1.40      matthew   595:     foreach my $sequence (&Apache::lonstatistics::Sequences_with_Assess()){
1.31      matthew   596:         my $title = $sequence->{'title'};
                    597:         my $base  = $sequence->{'base_width'};
                    598:         my $width = $sequence->{'width'};
                    599:         $Str .= $title.' 'x($width-$base).$padding;
1.30      matthew   600:     }
1.54    ! matthew   601:     $Str .= "total</pre>\n";
1.31      matthew   602:     $Str .= "<pre>";
1.39      matthew   603:     #
                    604:     # Check for suppression of output
1.54    ! matthew   605:     if ($data =~ /^final table/) {
1.39      matthew   606:         $Str = '';
                    607:     }
1.31      matthew   608:     $r->print($Str);
                    609:     $r->rflush();
                    610:     return;
1.30      matthew   611: }
                    612: 
1.31      matthew   613: sub html_outputstudent {
                    614:     my ($r,$student) = @_;
1.2       stredwic  615:     my $Str = '';
1.35      matthew   616:     #
                    617:     if($count++ % 5 == 0 && $count > 0) {
                    618:         $r->print("</pre><pre>");
                    619:     }
1.30      matthew   620:     # First, the @StudentData fields need to be listed
1.31      matthew   621:     my @to_show = &get_student_fields_to_show();
1.30      matthew   622:     foreach my $field (@to_show) {
                    623:         my $title=$student->{$field};
1.31      matthew   624:         my $base = length($title);
1.30      matthew   625:         my $width=$Apache::lonstatistics::StudentData{$field}->{'width'};
                    626:         $Str .= $title.' 'x($width-$base).$padding;
                    627:     }
                    628:     # Get ALL the students data
                    629:     my %StudentsData;
                    630:     my @tmp = &Apache::loncoursedata::get_current_state
                    631:         ($student->{'username'},$student->{'domain'},undef,
                    632:          $ENV{'request.course.id'});
                    633:     if ((scalar @tmp > 0) && ($tmp[0] !~ /^error:/)) {
                    634:         %StudentsData = @tmp;
                    635:     }
                    636:     if (scalar(@tmp) < 1) {
1.39      matthew   637:         $nodata_count++;
1.54    ! matthew   638:         return if ($data =~ /^final table/);
1.30      matthew   639:         $Str .= '<font color="blue">No Course Data</font>'."\n";
1.31      matthew   640:         $r->print($Str);
                    641:         $r->rflush();
                    642:         return;
1.30      matthew   643:     }
                    644:     #
                    645:     # By sequence build up the data
                    646:     my $studentstats;
1.31      matthew   647:     my $PerformanceStr = '';
1.40      matthew   648:     foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
1.54    ! matthew   649:         my ($performance,$performance_length,$score,$seq_max,$rawdata);
        !           650:         if ($base eq 'tries') {
        !           651:             ($performance,$performance_length,$score,$seq_max,$rawdata) =
        !           652:                 &StudentTriesOnSequence($student,\%StudentsData,
        !           653:                                         $seq,$show_links);
        !           654:         } else {
        !           655:             ($performance,$performance_length,$score,$seq_max,$rawdata) =
        !           656:                 &StudentPerformanceOnSequence($student,\%StudentsData,
        !           657:                                               $seq,$show_links);
        !           658:         }
        !           659:         my $ratio = sprintf("%3d",$score).'/'.sprintf("%3d",$seq_max);
1.31      matthew   660:         #
1.54    ! matthew   661:         if ($data eq 'sum and total' || $data eq 'parts correct total') {
        !           662:             $performance  = $ratio;
        !           663:             $performance .= ' 'x($seq->{'width'}-length($ratio));
        !           664:         } elsif ($data eq 'sum only' || $data eq 'parts correct') {
        !           665:             $performance  = $score;
        !           666:             $performance .= ' 'x($seq->{'width'}-length($score));
1.31      matthew   667:         } else {
                    668:             # Pad with extra spaces
1.51      matthew   669:             $performance .= ' 'x($seq->{'width'}-$performance_length-
1.31      matthew   670:                                  length($ratio)
                    671:                                  ).$ratio;
1.30      matthew   672:         }
1.31      matthew   673:         #
                    674:         $Str .= $performance.$padding;
                    675:         #
                    676:         $studentstats->{$seq->{'symb'}}->{'score'}= $score;
                    677:         $studentstats->{$seq->{'symb'}}->{'max'}  = $seq_max;
1.30      matthew   678:     }
                    679:     #
                    680:     # Total it up and store the statistics info.
                    681:     my ($score,$max) = (0,0);
                    682:     while (my ($symb,$seq_stats) = each (%{$studentstats})) {
                    683:         $Statistics->{$symb}->{'score'} += $seq_stats->{'score'};
1.54    ! matthew   684:         if ($Statistics->{$symb}->{'max'} < $seq_stats->{'max'}) {
        !           685:             $Statistics->{$symb}->{'max'} = $seq_stats->{'max'};
        !           686:         }
1.30      matthew   687:         $score += $seq_stats->{'score'};
                    688:         $max   += $seq_stats->{'max'};
                    689:     }
1.31      matthew   690:     $Str .= ' '.' 'x(length($max)-length($score)).$score.'/'.$max;
1.30      matthew   691:     $Str .= " \n";
1.39      matthew   692:     #
                    693:     # Check for suppressed output and update the progress window if so...
1.54    ! matthew   694:     if ($data =~ /^final table/) {
1.39      matthew   695:         $Str = '';
                    696:         &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
                    697:                                                  'last student');
                    698:     }
                    699:     #
1.31      matthew   700:     $r->print($Str);
                    701:     #
                    702:     $r->rflush();
                    703:     return;
1.30      matthew   704: }    
1.2       stredwic  705: 
1.31      matthew   706: sub html_finish {
                    707:     my ($r) = @_;
1.39      matthew   708:     #
                    709:     # Check for suppressed output and close the progress window if so
1.54    ! matthew   710:     if ($data =~ /^final table/) {
1.39      matthew   711:         &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
                    712:     } else {
                    713:         $r->print("</pre>\n"); 
                    714:     }
1.49      matthew   715:     if ($single_student_mode) {
                    716:         $r->print(&SingleStudentTotal());
                    717:     } else {
                    718:         $r->print(&StudentAverageTotal());
                    719:     }
1.31      matthew   720:     $r->rflush();
                    721:     return;
                    722: }
                    723: 
1.39      matthew   724: sub StudentAverageTotal {
                    725:     my $Str = "<h3>Summary Tables</h3>\n";
                    726:     my $num_students = scalar(@Apache::lonstatistics::Students);
                    727:     my $total_ave = 0;
                    728:     my $total_max = 0;
                    729:     $Str .= '<table border=2 cellspacing="1">'."\n";
                    730:     $Str .= "<tr><th>Title</th><th>Average</th><th>Maximum</th></tr>\n";
1.40      matthew   731:     foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
1.42      matthew   732:         my $ave;
                    733:         if ($num_students > $nodata_count) {
                    734:             $ave = int(100*($Statistics->{$seq->{'symb'}}->{'score'}/
                    735:                             ($num_students-$nodata_count)))/100;
                    736:         } else {
                    737:             $ave = 0;
                    738:         }
1.39      matthew   739:         $total_ave += $ave;
1.54    ! matthew   740:         my $max = $Statistics->{$seq->{'symb'}}->{'max'};
1.39      matthew   741:         $total_max += $max;
                    742:         if ($ave == 0) {
                    743:             $ave = "0.00";
                    744:         }
                    745:         $ave .= '&nbsp;';
                    746:         $max .= '&nbsp;&nbsp;&nbsp;';
                    747:         $Str .= '<tr><td>'.$seq->{'title'}.'</td>'.
                    748:             '<td align="right">'.$ave.'</td>'.
                    749:                 '<td align="right">'.$max.'</td></tr>'."\n";
                    750:     }
                    751:     $total_ave = int(100*$total_ave)/100; # only two digit
                    752:     $Str .= "</table>\n";
                    753:     $Str .= '<table border=2 cellspacing="1">'."\n";
                    754:     $Str .= '<tr><th>Number of Students</th><th>Average</th>'.
                    755:         "<th>Maximum</th></tr>\n";
                    756:     $Str .= '<tr><td>'.($num_students-$nodata_count).'</td>'.
                    757:         '<td>'.$total_ave.'</td><td>'.$total_max.'</td>';
                    758:     $Str .= "</table>\n";
                    759:     return $Str;
                    760: }
                    761: 
1.49      matthew   762: sub SingleStudentTotal {
                    763:     my $student = &Apache::lonstatistics::current_student();
1.52      matthew   764:     my $Str = "<h3>Summary table for ".$student->{'fullname'}." ".
                    765:         $student->{'username'}.'@'.$student->{'domain'}."</h3>\n";
1.49      matthew   766:     $Str .= '<table border=2 cellspacing="1">'."\n";
                    767:     $Str .= 
                    768:         "<tr><th>Sequence or Folder</th><th>Score</th><th>Maximum</th></tr>\n";
                    769:     my $total = 0;
                    770:     my $total_max = 0;
                    771:     foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
                    772:         my $value = $Statistics->{$seq->{'symb'}}->{'score'};
                    773:         my $max = $Statistics->{$seq->{'symb'}}->{'max'};
                    774:         $Str .= '<tr><td>'.$seq->{'title'}.'</td>'.
                    775:             '<td align="right">'.$value.'</td>'.
                    776:                 '<td align="right">'.$max.'</td></tr>'."\n";
                    777:         $total += $value;
                    778:         $total_max +=$max;
                    779:     }
                    780:     $Str .= '<tr><td><b>Total</b></td>'.
                    781:         '<td align="right">'.$total.'</td>'.
                    782:         '<td align="right">'.$total_max."</td></tr>\n";
                    783:     $Str .= "</table>\n";
                    784:     return $Str;
                    785: }
                    786: 
1.31      matthew   787: }
                    788: 
1.35      matthew   789: #######################################################
                    790: #######################################################
                    791: 
                    792: =pod
                    793: 
                    794: =head2 Multi-Sheet EXCEL subroutines
                    795: 
                    796: =item &multi_sheet_excel_initialize($r)
                    797: 
                    798: =item &multi_sheet_excel_outputstudent($r,$student)
                    799: 
                    800: =item &multi_sheet_excel_finish($r)
                    801: 
                    802: =cut
                    803: 
                    804: #######################################################
                    805: #######################################################
                    806: {
                    807: 
                    808: sub multi_sheet_excel_initialize {
                    809:     my ($r)=@_;
                    810:     $r->print("<h1>Not yet implemented</h1>");
                    811:     # 
                    812:     # Estimate the size of the file.  We would like to have < 5 megs of data.
                    813:     my $max_size = 5000000;
                    814:     my $num_students  = scalar(@Apache::lonstatistics::Students);
                    815:     my $num_sequences = 0;
                    816:     my $num_data_per_part  = 2; # 'status' and 'numtries'
                    817:     my $fields_per_student = scalar(&get_student_fields_to_show());
                    818:     my $bytes_per_field    = 20; # Back of the envelope calculation
1.40      matthew   819:     foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
1.35      matthew   820:         $num_sequences++ if ($seq->{'num_assess'} > 0);
                    821:         $fields_per_student += $num_data_per_part * $seq->{'num_assess_parts'};
                    822:     }
                    823:     my $size_estimate = $fields_per_student*$num_students*$bytes_per_field;
                    824:     #
                    825:     # Compute number of workbooks
                    826:     my $num_workbooks = 1;
                    827:     if ($size_estimate > $max_size) { # try to stay under 5 megs
                    828:         $num_workbooks += int($size_estimate / $max_size);
                    829:     }
1.54    ! matthew   830: #    if ($data eq ) {
        !           831: #        if (@Apache::lonstatistics::SelectedSections > 1 && 
        !           832: #            $Apache::lonstatistics::SelectedSections[0] ne 'all') {
        !           833: #            $num_workbooks = scalar(@Apache::lonstatistics::SelectedSections);
        !           834: #        } else {
        !           835: #            # @Apache::lonstatistics::Sections contains 'all' as well.
        !           836: #            $num_workbooks = scalar(@Apache::lonstatistics::Sections) - 1;
        !           837: #        }
        !           838: #    }
1.35      matthew   839:     
                    840:     $r->print("Maximum allowed size: ".$max_size." bytes<br />");
                    841:     $r->print("Number of students: ".$num_students."<br />");
                    842:     $r->print("Number of fields per student: ".$fields_per_student."<br />");
                    843:     $r->print("Total number of fields: ".($fields_per_student*$num_students).
                    844:               "<br />");
                    845:     $r->print("Bytes per field: ".$bytes_per_field." (estimated)"."<br />");
                    846:     $r->print("Estimated size: ".$size_estimate." bytes<br />");
                    847:     $r->print("Number of workbooks: ".$num_workbooks."<br />");
                    848:     $r->rflush();
                    849:     return;
                    850: }
                    851: 
                    852: sub multi_sheet_excel_outputstudent {
                    853:     my ($r,$student) = @_;
                    854: }
                    855: 
                    856: sub multi_sheet_excel_finish {
                    857:     my ($r) = @_;
                    858: }
                    859: 
                    860: }
1.31      matthew   861: #######################################################
                    862: #######################################################
                    863: 
                    864: =pod
                    865: 
                    866: =head2 EXCEL subroutines
                    867: 
                    868: =item &excel_initialize($r)
                    869: 
                    870: =item &excel_outputstudent($r,$student)
                    871: 
                    872: =item &excel_finish($r)
                    873: 
                    874: =cut
                    875: 
                    876: #######################################################
                    877: #######################################################
                    878: {
                    879: 
                    880: my $excel_sheet;
1.32      matthew   881: my $excel_workbook;
                    882: 
                    883: my $filename;
                    884: my $rows_output;
                    885: my $cols_output;
                    886: 
1.36      matthew   887: my %prog_state; # progress window state
1.54    ! matthew   888: my $request_aborted;
1.31      matthew   889: 
                    890: sub excel_initialize {
                    891:     my ($r) = @_;
                    892:     #
1.54    ! matthew   893:     $request_aborted = undef;
        !           894:     my $total_columns = scalar(&get_student_fields_to_show());
        !           895:     foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
        !           896:         # Add 2 because we need a 'sum' and 'total' column for each
        !           897:         $total_columns += $seq->{'num_assess_parts'}+2;
        !           898:     }
        !           899:     if ($data eq 'tries' && $total_columns > 255) {
        !           900:         $r->print(<<END);
        !           901: <h2>Unable to Complete Request</h2>
        !           902: <p>
        !           903: LON-CAPA is unable to produce your Excel spreadsheet because your selections
        !           904: will result in more than 255 columns.  Excel allows only 255 columns in a
        !           905: spreadsheet.
        !           906: </p><p>
        !           907: You may consider reducing the number of <b>Sequences or Folders</b> you
        !           908: have selected.  
        !           909: </p><p>
        !           910: LON-CAPA can produce <b>CSV</b> files of this data or Excel files of the
        !           911: summary data (<b>Parts Correct</b> or <b>Parts Correct & Totals</b>).
        !           912: </p>
        !           913: END
        !           914:        $request_aborted = 1;
        !           915:     }
        !           916:     if ($data eq 'scores' && $total_columns > 255) {
        !           917:         $r->print(<<END);
        !           918: <h2>Unable to Complete Request</h2>
        !           919: <p>
        !           920: LON-CAPA is unable to produce your Excel spreadsheet because your selections
        !           921: will result in more than 255 columns.  Excel allows only 255 columns in a
        !           922: spreadsheet.
        !           923: </p><p>
        !           924: You may consider reducing the number of <b>Sequences or Folders</b> you
        !           925: have selected.  
        !           926: </p><p>
        !           927: LON-CAPA can produce <b>CSV</b> files of this data or Excel files of the
        !           928: summary data (<b>Scores Sum</b> or <b>Scores Sum & Totals</b>).
        !           929: </p>
        !           930: END
        !           931:        $request_aborted = 1;
        !           932:     }
        !           933:     if ($data =~ /^final table/) {
        !           934:         $r->print(<<END);
        !           935: <h2>Unable to Complete Request</h2>
        !           936: <p>
        !           937: The <b>Summary Table (Scores)</b> option is not available for non-HTML output.
        !           938: </p>
        !           939: END
        !           940:        $request_aborted = 1;
        !           941:     }
        !           942:     return if ($request_aborted);
        !           943:     #
1.32      matthew   944:     $filename = '/prtspool/'.
1.31      matthew   945:         $ENV{'user.name'}.'_'.$ENV{'user.domain'}.'_'.
                    946:             time.'_'.rand(1000000000).'.xls';
1.32      matthew   947:     #
                    948:     $excel_workbook = undef;
                    949:     $excel_sheet = undef;
                    950:     #
                    951:     $rows_output = 0;
                    952:     $cols_output = 0;
                    953:     #
                    954:     # Create sheet
                    955:     $excel_workbook = Spreadsheet::WriteExcel->new('/home/httpd'.$filename);
                    956:     #
                    957:     # Check for errors
                    958:     if (! defined($excel_workbook)) {
1.31      matthew   959:         $r->log_error("Error creating excel spreadsheet $filename: $!");
                    960:         $r->print("Problems creating new Excel file.  ".
                    961:                   "This error has been logged.  ".
                    962:                   "Please alert your LON-CAPA administrator");
1.32      matthew   963:         return ;
1.31      matthew   964:     }
                    965:     #
                    966:     # The excel spreadsheet stores temporary data in files, then put them
                    967:     # together.  If needed we should be able to disable this (memory only).
                    968:     # The temporary directory must be specified before calling 'addworksheet'.
                    969:     # File::Temp is used to determine the temporary directory.
1.32      matthew   970:     $excel_workbook->set_tempdir($Apache::lonnet::tmpdir);
                    971:     #
                    972:     # Add a worksheet
1.33      matthew   973:     my $sheetname = $ENV{'course.'.$ENV{'request.course.id'}.'.description'};
                    974:     if (length($sheetname) > 31) {
                    975:         $sheetname = substr($sheetname,0,31);
                    976:     }
                    977:     $excel_sheet = $excel_workbook->addworksheet($sheetname);
1.32      matthew   978:     #
1.34      matthew   979:     # Put the course description in the header
                    980:     $excel_sheet->write($rows_output,$cols_output++,
                    981:                    $ENV{'course.'.$ENV{'request.course.id'}.'.description'});
                    982:     $cols_output += 3;
                    983:     #
                    984:     # Put a description of the sections listed
                    985:     my $sectionstring = '';
                    986:     my @Sections = @Apache::lonstatistics::SelectedSections;
                    987:     if (scalar(@Sections) > 1) {
                    988:         if (scalar(@Sections) > 2) {
                    989:             my $last = pop(@Sections);
                    990:             $sectionstring = "Sections ".join(', ',@Sections).', and '.$last;
                    991:         } else {
                    992:             $sectionstring = "Sections ".join(' and ',@Sections);
                    993:         }
                    994:     } else {
                    995:         if ($Sections[0] eq 'all') {
                    996:             $sectionstring = "All sections";
                    997:         } else {
                    998:             $sectionstring = "Section ".$Sections[0];
                    999:         }
                   1000:     }
                   1001:     $excel_sheet->write($rows_output,$cols_output++,$sectionstring);
                   1002:     $cols_output += scalar(@Sections);
                   1003:     #
                   1004:     # Put the date in there too
1.54    ! matthew  1005:     $excel_sheet->write($rows_output++,$cols_output++,
1.34      matthew  1006:                         'Compiled on '.localtime(time));
                   1007:     #
1.54    ! matthew  1008:     $cols_output = 0;
        !          1009:     $excel_sheet->write($rows_output++,$cols_output++,$datadescription);
        !          1010:     #
        !          1011:     if ($data eq 'tries' || $data eq 'scores') {
        !          1012:         $rows_output++;
        !          1013:     }
1.34      matthew  1014:     #
1.32      matthew  1015:     # Add the student headers
1.34      matthew  1016:     $cols_output = 0;
1.32      matthew  1017:     foreach my $field (&get_student_fields_to_show()) {
1.34      matthew  1018:         $excel_sheet->write($rows_output,$cols_output++,$field);
1.32      matthew  1019:     }
1.54    ! matthew  1020:     my $row_offset = 0;
        !          1021:     if ($data eq 'tries' || $data eq 'scores') {
        !          1022:         $row_offset = -1;
        !          1023:     }
1.32      matthew  1024:     #
1.54    ! matthew  1025:     # Add the remaining column headers
1.40      matthew  1026:     foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
1.54    ! matthew  1027:         $excel_sheet->write($rows_output+$row_offset,
        !          1028:                             $cols_output,$seq->{'title'});
        !          1029:         if ($data eq 'tries' || $data eq 'scores') {
        !          1030:             foreach my $res (@{$seq->{'contents'}}) {
        !          1031:                 next if ($res->{'type'} ne 'assessment');
        !          1032:                 if (scalar(@{$res->{'parts'}}) > 1) {
        !          1033:                     foreach my $part (@{$res->{'parts'}}) {
        !          1034:                         $excel_sheet->write($rows_output,
        !          1035:                                             $cols_output++,
        !          1036:                                             $res->{'title'}.' part '.$part);
        !          1037:                     }
        !          1038:                 } else {
        !          1039:                     $excel_sheet->write($rows_output,
        !          1040:                                         $cols_output++,
        !          1041:                                         $res->{'title'});
        !          1042:                 }
        !          1043:             }
        !          1044:             $excel_sheet->write($rows_output,$cols_output++,'score');
        !          1045:             $excel_sheet->write($rows_output,$cols_output++,'maximum');
        !          1046:         } elsif ($data eq 'sum and total' || $data eq 'parts correct total') {
1.34      matthew  1047:             $excel_sheet->write($rows_output+1,$cols_output,'score');
                   1048:             $excel_sheet->write($rows_output+1,$cols_output+1,'maximum');
1.32      matthew  1049:             $cols_output += 2;
                   1050:         } else {
                   1051:             $cols_output++;
                   1052:         }
                   1053:     }
                   1054:     #
                   1055:     # Bookkeeping
1.54    ! matthew  1056:     if ($data eq 'sum and total' || $data eq 'parts correct total') {
1.34      matthew  1057:         $rows_output += 2;
1.32      matthew  1058:     } else {
1.34      matthew  1059:         $rows_output += 1;
1.45      matthew  1060:     }
                   1061:     #
                   1062:     # Output a row for MAX
1.54    ! matthew  1063:     $cols_output = 0;
        !          1064:     foreach my $field (&get_student_fields_to_show()) {
        !          1065:         if ($field eq 'username' || $field eq 'fullname' || 
        !          1066:             $field eq 'id') {
        !          1067:             $excel_sheet->write($rows_output,$cols_output++,'Maximum');
        !          1068:         } else {
        !          1069:             $excel_sheet->write($rows_output,$cols_output++,'');
        !          1070:         }
        !          1071:     }
        !          1072:     #
        !          1073:     # Add the maximums for each sequence or assessment
        !          1074:     foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
        !          1075:         my $weight;
        !          1076:         my $max = 0;
        !          1077:         foreach my $resource (@{$seq->{'contents'}}) {
        !          1078:             next if ($resource->{'type'} ne 'assessment');
        !          1079:             foreach my $part (@{$resource->{'parts'}}) {
        !          1080:                 $weight = 1;
        !          1081:                 if ($base eq 'scores') {
        !          1082:                     $weight = &Apache::lonnet::EXT
        !          1083:                         ('resource.'.$part.'.weight',$resource->{'symb'},
        !          1084:                          undef,undef,undef);
        !          1085:                     if (!defined($weight) || ($weight eq '')) { 
        !          1086:                         $weight=1;
        !          1087:                     }
        !          1088:                 }
        !          1089:                 if ($data eq 'scores') {
        !          1090:                     $excel_sheet->write($rows_output,$cols_output++,$weight);
        !          1091:                 } elsif ($data eq 'tries') {
        !          1092:                     $excel_sheet->write($rows_output,$cols_output++,'');
        !          1093:                 }
        !          1094:                 $max += $weight;
1.45      matthew  1095:             }
1.54    ! matthew  1096:         } 
        !          1097:         if (! ($data eq 'sum only' || $data eq 'parts correct')) {
        !          1098:             $excel_sheet->write($rows_output,$cols_output++,'');
1.45      matthew  1099:         }
1.54    ! matthew  1100:         $excel_sheet->write($rows_output,$cols_output++,$max);
1.32      matthew  1101:     }
1.54    ! matthew  1102:     $rows_output++;
1.32      matthew  1103:     #
                   1104:     # Let the user know what we are doing
                   1105:     my $studentcount = scalar(@Apache::lonstatistics::Students); 
                   1106:     $r->print("<h1>Compiling Excel spreadsheet for ".
                   1107:               $studentcount.' student');
                   1108:     $r->print('s') if ($studentcount > 1);
                   1109:     $r->print("</h1>\n");
                   1110:     $r->rflush();
1.31      matthew  1111:     #
1.36      matthew  1112:     # Initialize progress window
                   1113:     %prog_state=&Apache::lonhtmlcommon::Create_PrgWin
                   1114:         ($r,'Excel File Compilation Status',
                   1115:          'Excel File Compilation Progress', $studentcount);
                   1116:     #
1.31      matthew  1117:     return;
                   1118: }
                   1119: 
                   1120: sub excel_outputstudent {
                   1121:     my ($r,$student) = @_;
1.54    ! matthew  1122:     return if ($request_aborted);
1.32      matthew  1123:     return if (! defined($excel_sheet));
                   1124:     $cols_output=0;
                   1125:     #
                   1126:     # Write out student data
                   1127:     my @to_show = &get_student_fields_to_show();
                   1128:     foreach my $field (@to_show) {
                   1129:         $excel_sheet->write($rows_output,$cols_output++,$student->{$field});
                   1130:     }
                   1131:     #
                   1132:     # Get student assessment data
                   1133:     my %StudentsData;
                   1134:     my @tmp = &Apache::loncoursedata::get_current_state($student->{'username'},
                   1135:                                                         $student->{'domain'},
                   1136:                                                         undef,
                   1137:                                                    $ENV{'request.course.id'});
                   1138:     if ((scalar @tmp > 0) && ($tmp[0] !~ /^error:/)) {
                   1139:         %StudentsData = @tmp;
                   1140:     }
                   1141:     #
                   1142:     # Write out sequence scores and totals data
1.40      matthew  1143:     foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
1.54    ! matthew  1144:         my ($performance,$performance_length,$score,$seq_max,$rawdata);
        !          1145:         if ($base eq 'tries') {
        !          1146:             ($performance,$performance_length,$score,$seq_max,$rawdata) =
        !          1147:                 &StudentTriesOnSequence($student,\%StudentsData,
        !          1148:                                         $seq,'no');
        !          1149:         } else {
        !          1150:             ($performance,$performance_length,$score,$seq_max,$rawdata) =
        !          1151:                 &StudentPerformanceOnSequence($student,\%StudentsData,
        !          1152:                                               $seq,'no');
        !          1153:         }
        !          1154:         if ($data eq 'tries' || $data eq 'scores') {
        !          1155:             foreach my $value (@$rawdata) {
        !          1156:                 $excel_sheet->write($rows_output,$cols_output++,$value);
        !          1157:             }
        !          1158:             $excel_sheet->write($rows_output,$cols_output++,$score);
        !          1159:             $excel_sheet->write($rows_output,$cols_output++,$seq_max);
        !          1160:         } elsif ($data eq 'sum and total' || $data eq 'sum only' || 
        !          1161:             $data eq 'parts correct' || $data eq 'parts correct total') {
1.32      matthew  1162:             $excel_sheet->write($rows_output,$cols_output++,$score);
                   1163:         }
1.54    ! matthew  1164:         if ($data eq 'sum and total' || $data eq 'parts correct total') {
1.32      matthew  1165:             $excel_sheet->write($rows_output,$cols_output++,$seq_max);
                   1166:         }
                   1167:     }
                   1168:     #
                   1169:     # Bookkeeping
                   1170:     $rows_output++; 
                   1171:     $cols_output=0;
                   1172:     #
1.36      matthew  1173:     # Update the progress window
                   1174:     &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,'last student');
1.32      matthew  1175:     return;
1.31      matthew  1176: }
                   1177: 
                   1178: sub excel_finish {
                   1179:     my ($r) = @_;
1.54    ! matthew  1180:     return if ($request_aborted);
1.32      matthew  1181:     return if (! defined($excel_sheet));
                   1182:     #
                   1183:     # Write the excel file
                   1184:     $excel_workbook->close();
                   1185:     my $c = $r->connection();
                   1186:     #
                   1187:     return if($c->aborted());
                   1188:     #
1.36      matthew  1189:     # Close the progress window
                   1190:     &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
                   1191:     #
1.32      matthew  1192:     # Tell the user where to get their excel file
1.36      matthew  1193:     $r->print('<br />'.
1.32      matthew  1194:               '<a href="'.$filename.'">Your Excel spreadsheet.</a>'."\n");
                   1195:     $r->rflush();
                   1196:     return;
1.31      matthew  1197: }
                   1198: 
                   1199: }
1.30      matthew  1200: #######################################################
                   1201: #######################################################
                   1202: 
                   1203: =pod
                   1204: 
1.31      matthew  1205: =head2 CSV output routines
                   1206: 
                   1207: =item &csv_initialize($r)
                   1208: 
                   1209: =item &csv_outputstudent($r,$student)
                   1210: 
                   1211: =item &csv_finish($r)
1.30      matthew  1212: 
                   1213: =cut
                   1214: 
                   1215: #######################################################
                   1216: #######################################################
1.31      matthew  1217: {
                   1218: 
1.37      matthew  1219: my $outputfile;
                   1220: my $filename;
1.54    ! matthew  1221: my $request_aborted;
1.37      matthew  1222: my %prog_state; # progress window state
                   1223: 
1.31      matthew  1224: sub csv_initialize{
                   1225:     my ($r) = @_;
1.37      matthew  1226:     # 
                   1227:     # Clean up
                   1228:     $filename = undef;
                   1229:     $outputfile = undef;
                   1230:     undef(%prog_state);
                   1231:     #
1.54    ! matthew  1232:     # Deal with unimplemented requests
        !          1233:     $request_aborted = undef;
        !          1234:     if ($data =~ /final table/) {
        !          1235:         $r->print(<<END);
        !          1236: <h2>Unable to Complete Request</h2>
        !          1237: <p>
        !          1238: The <b>Summary Table (Scores)</b> option is not available for non-HTML output.
        !          1239: </p>
        !          1240: END
        !          1241:        $request_aborted = 1;
        !          1242:     }
        !          1243:     return if ($request_aborted);
        !          1244: 
        !          1245:     #
1.37      matthew  1246:     # Open a file
                   1247:     $filename = '/prtspool/'.
                   1248:         $ENV{'user.name'}.'_'.$ENV{'user.domain'}.'_'.
                   1249:             time.'_'.rand(1000000000).'.csv';
                   1250:     unless ($outputfile = Apache::File->new('>/home/httpd'.$filename)) {
                   1251:         $r->log_error("Couldn't open $filename for output $!");
                   1252:         $r->print("Problems occured in writing the csv file.  ".
                   1253:                   "This error has been logged.  ".
                   1254:                   "Please alert your LON-CAPA administrator.");
                   1255:         $outputfile = undef;
                   1256:     }
1.38      matthew  1257:     #
                   1258:     # Datestamp
                   1259:     my $description = $ENV{'course.'.$ENV{'request.course.id'}.'.description'};
                   1260:     print $outputfile '"'.&Apache::loncommon::csv_translate($description).'",'.
                   1261:         '"'.&Apache::loncommon::csv_translate(scalar(localtime(time))).'"'.
                   1262:             "\n";
1.37      matthew  1263:     #
                   1264:     # Print out the headings
                   1265:     my $Str = '';
                   1266:     my $Str2 = undef;
                   1267:     foreach my $field (&get_student_fields_to_show()) {
1.54    ! matthew  1268:         if ($data eq 'sum only') {
1.37      matthew  1269:             $Str .= '"'.&Apache::loncommon::csv_translate($field).'",';
1.54    ! matthew  1270:         } elsif ($data eq 'sum and total' || $data eq 'parts correct total') {
1.37      matthew  1271:             $Str .= '"",'; # first row empty on the student fields
                   1272:             $Str2 .= '"'.&Apache::loncommon::csv_translate($field).'",';
1.54    ! matthew  1273:         } elsif ($data eq 'scores' || $data eq 'tries' || 
        !          1274:                  $data eq 'parts correct') {
1.53      matthew  1275:             $Str  .= '"",';
                   1276:             $Str2 .= '"'.&Apache::loncommon::csv_translate($field).'",';
1.37      matthew  1277:         }
                   1278:     }
1.40      matthew  1279:     foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
1.54    ! matthew  1280:         if ($data eq 'sum only' || $data eq 'parts correct') {
1.37      matthew  1281:             $Str .= '"'.&Apache::loncommon::csv_translate($seq->{'title'}).
                   1282:                 '",';
1.54    ! matthew  1283:         } elsif ($data eq 'sum and total' || $data eq 'parts correct total') {
1.37      matthew  1284:             $Str  .= '"'.&Apache::loncommon::csv_translate($seq->{'title'}).
                   1285:                 '","",';
                   1286:             $Str2 .= '"score","total possible",';
1.54    ! matthew  1287:         } elsif ($data eq 'scores' || $data eq 'tries') {
1.37      matthew  1288:             $Str  .= '"'.&Apache::loncommon::csv_translate($seq->{'title'}).
                   1289:                 '",';
1.53      matthew  1290:             $Str .= '"",'x($seq->{'num_assess_parts'}-1+2);
                   1291:             foreach my $res (@{$seq->{'contents'}}) {
1.54    ! matthew  1292:                 next if ($res->{'type'} ne 'assessment');
1.53      matthew  1293:                 foreach my $part (@{$res->{'parts'}}) {
                   1294:                     $Str2 .= '"'.&Apache::loncommon::csv_translate($res->{'title'}.', Part '.$part).'",';
                   1295:                 }
                   1296:             }
                   1297:             $Str2 .= '"score","total possible",';
1.37      matthew  1298:         }
                   1299:     }
                   1300:     chop($Str);
                   1301:     $Str .= "\n";
                   1302:     print $outputfile $Str;
                   1303:     if (defined($Str2)) {
                   1304:         chop($Str2);
                   1305:         $Str2 .= "\n";
                   1306:         print $outputfile $Str2;
                   1307:     }
                   1308:     #
                   1309:     # Initialize progress window
                   1310:     my $studentcount = scalar(@Apache::lonstatistics::Students);
                   1311:     %prog_state=&Apache::lonhtmlcommon::Create_PrgWin
                   1312:         ($r,'CSV File Compilation Status',
                   1313:          'CSV File Compilation Progress', $studentcount);
1.31      matthew  1314:     return;
                   1315: }
                   1316: 
                   1317: sub csv_outputstudent {
                   1318:     my ($r,$student) = @_;
1.54    ! matthew  1319:     return if ($request_aborted);
1.37      matthew  1320:     return if (! defined($outputfile));
                   1321:     my $Str = '';
                   1322:     #
                   1323:     # Output student fields
                   1324:     my @to_show = &get_student_fields_to_show();
                   1325:     foreach my $field (@to_show) {
                   1326:         $Str .= '"'.&Apache::loncommon::csv_translate($student->{$field}).'",';
                   1327:     }
                   1328:     #
                   1329:     # Get student assessment data
                   1330:     my %StudentsData;
                   1331:     my @tmp = &Apache::loncoursedata::get_current_state($student->{'username'},
                   1332:                                                         $student->{'domain'},
                   1333:                                                         undef,
                   1334:                                                    $ENV{'request.course.id'});
                   1335:     if ((scalar @tmp > 0) && ($tmp[0] !~ /^error:/)) {
                   1336:         %StudentsData = @tmp;
                   1337:     }
                   1338:     #
                   1339:     # Output performance data
1.40      matthew  1340:     foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
1.54    ! matthew  1341:         my ($performance,$performance_length,$score,$seq_max,$rawdata);
        !          1342:         if ($base eq 'tries') {
        !          1343:             ($performance,$performance_length,$score,$seq_max,$rawdata) =
        !          1344:                 &StudentTriesOnSequence($student,\%StudentsData,
        !          1345:                                         $seq,'no');
        !          1346:         } else {
        !          1347:             ($performance,$performance_length,$score,$seq_max,$rawdata) =
        !          1348:                 &StudentPerformanceOnSequence($student,\%StudentsData,
        !          1349:                                               $seq,'no');
        !          1350:         }
        !          1351:         if ($data eq 'sum only' || $data eq 'parts correct') {
1.37      matthew  1352:             $Str .= '"'.$score.'",';
1.54    ! matthew  1353:         } elsif ($data eq 'sum and total' || $data eq 'parts correct total') {
1.37      matthew  1354:             $Str  .= '"'.$score.'","'.$seq_max.'",';
1.54    ! matthew  1355:         } elsif ($data eq 'scores' || $data eq 'tries') {
        !          1356:             $Str .= '"'.join('","',(@$rawdata,$score,$seq_max)).'",';
1.37      matthew  1357:         }
                   1358:     }
                   1359:     chop($Str);
                   1360:     $Str .= "\n";
                   1361:     print $outputfile $Str;
                   1362:     #
                   1363:     # Update the progress window
                   1364:     &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,'last student');
                   1365:     return;
1.31      matthew  1366: }
                   1367: 
                   1368: sub csv_finish {
                   1369:     my ($r) = @_;
1.54    ! matthew  1370:     return if ($request_aborted);
1.37      matthew  1371:     return if (! defined($outputfile));
                   1372:     close($outputfile);
                   1373:     #
                   1374:     my $c = $r->connection();
                   1375:     return if ($c->aborted());
                   1376:     #
                   1377:     # Close the progress window
                   1378:     &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
                   1379:     #
                   1380:     # Tell the user where to get their csv file
                   1381:     $r->print('<br />'.
                   1382:               '<a href="'.$filename.'">Your csv file.</a>'."\n");
                   1383:     $r->rflush();
                   1384:     return;
                   1385:     
1.31      matthew  1386: }
1.2       stredwic 1387: 
                   1388: }
                   1389: 
1.28      matthew  1390: #######################################################
                   1391: #######################################################
                   1392: 
1.2       stredwic 1393: =pod
                   1394: 
1.54    ! matthew  1395: =item &StudentTriesOnSequence()
1.2       stredwic 1396: 
1.30      matthew  1397: Inputs:
1.2       stredwic 1398: 
                   1399: =over 4
                   1400: 
1.30      matthew  1401: =item $student
1.28      matthew  1402: 
1.30      matthew  1403: =item $studentdata Hash ref to all student data
1.2       stredwic 1404: 
1.30      matthew  1405: =item $seq Hash ref, the sequence we are working on
1.2       stredwic 1406: 
1.30      matthew  1407: =item $links if defined we will output links to each resource.
1.2       stredwic 1408: 
1.28      matthew  1409: =back
1.2       stredwic 1410: 
                   1411: =cut
1.1       stredwic 1412: 
1.28      matthew  1413: #######################################################
                   1414: #######################################################
1.54    ! matthew  1415: sub StudentTriesOnSequence {
1.32      matthew  1416:     my ($student,$studentdata,$seq,$links) = @_;
1.31      matthew  1417:     $links = 'no' if (! defined($links));
1.1       stredwic 1418:     my $Str = '';
1.30      matthew  1419:     my ($sum,$max) = (0,0);
1.51      matthew  1420:     my $performance_length = 0;
1.54    ! matthew  1421:     my @TriesData = ();
        !          1422:     my $tries;
1.30      matthew  1423:     foreach my $resource (@{$seq->{'contents'}}) {
                   1424:         next if ($resource->{'type'} ne 'assessment');
                   1425:         my $resource_data = $studentdata->{$resource->{'symb'}};
                   1426:         my $value = '';
                   1427:         foreach my $partnum (@{$resource->{'parts'}}) {
1.54    ! matthew  1428:             $tries = undef;
1.30      matthew  1429:             $max++;
1.51      matthew  1430:             $performance_length++;
1.30      matthew  1431:             my $symbol = ' '; # default to space
                   1432:             #
                   1433:             if (exists($resource_data->{'resource.'.$partnum.'.solved'})) {
                   1434:                 my $status = $resource_data->{'resource.'.$partnum.'.solved'};
                   1435:                 if ($status eq 'correct_by_override') {
                   1436:                     $symbol = '+';
                   1437:                     $sum++;
                   1438:                 } elsif ($status eq 'incorrect_by_override') {
                   1439:                     $symbol = '-';
                   1440:                 } elsif ($status eq 'ungraded_attempted') {
                   1441:                     $symbol = '#';
                   1442:                 } elsif ($status eq 'incorrect_attempted')  {
                   1443:                     $symbol = '.';
                   1444:                 } elsif ($status eq 'excused') {
                   1445:                     $symbol = 'x';
                   1446:                     $max--;
                   1447:                 } elsif ($status eq 'correct_by_student' &&
                   1448:                     exists($resource_data->{'resource.'.$partnum.'.tries'})){
1.54    ! matthew  1449:                     $tries = $resource_data->{'resource.'.$partnum.'.tries'};
        !          1450:                     if ($tries > 9) {
1.30      matthew  1451:                         $symbol = '*';
1.54    ! matthew  1452:                     } elsif ($tries > 0) {
        !          1453:                         $symbol = $tries;
1.30      matthew  1454:                     } else {
                   1455:                         $symbol = ' ';
                   1456:                     }
                   1457:                     $sum++;
1.43      matthew  1458:                 } elsif (exists($resource_data->{'resource.'.
                   1459:                                                      $partnum.'.tries'})){
                   1460:                     $symbol = '.';
1.30      matthew  1461:                 } else {
                   1462:                     $symbol = ' ';
1.2       stredwic 1463:                 }
1.30      matthew  1464:             } else {
                   1465:                 # Unsolved.  Did they try?
                   1466:                 if (exists($resource_data->{'resource.'.$partnum.'.tries'})){
                   1467:                     $symbol = '.';
                   1468:                 } else {
                   1469:                     $symbol = ' ';
1.18      matthew  1470:                 }
1.2       stredwic 1471:             }
1.54    ! matthew  1472:             #
        !          1473:             if (! defined($tries)) {
        !          1474:                 $tries = $symbol;
        !          1475:             }
        !          1476:             push (@TriesData,$tries);
1.30      matthew  1477:             #
1.47      matthew  1478:             if ( ($links eq 'yes' && $symbol ne ' ') ||
                   1479:                  ($links eq 'all')) {
1.49      matthew  1480:                 if (length($symbol) > 1) {
                   1481:                     &Apache::lonnet::logthis('length of symbol "'.$symbol.'" > 1');
                   1482:                 }
1.30      matthew  1483:                 $symbol = '<a href="/adm/grades'.
                   1484:                     '?symb='.&Apache::lonnet::escape($resource->{'symb'}).
                   1485:                         '&student='.$student->{'username'}.
                   1486:                             '&domain='.$student->{'domain'}.
                   1487:                                 '&command=submission">'.$symbol.'</a>';
                   1488:             }
                   1489:             $value .= $symbol;
1.2       stredwic 1490:         }
1.30      matthew  1491:         $Str .= $value;
1.17      minaeibi 1492:     }
1.51      matthew  1493:     if ($seq->{'randompick'}) {
                   1494:         $max = $seq->{'randompick'};
                   1495:     }
1.54    ! matthew  1496:     return ($Str,$performance_length,$sum,$max,\@TriesData);
        !          1497: }
        !          1498: 
        !          1499: #######################################################
        !          1500: #######################################################
        !          1501: 
        !          1502: =pod
        !          1503: 
        !          1504: =item &StudentPerformanceOnSequence()
        !          1505: 
        !          1506: Inputs:
        !          1507: 
        !          1508: =over 4
        !          1509: 
        !          1510: =item $student
        !          1511: 
        !          1512: =item $studentdata Hash ref to all student data
        !          1513: 
        !          1514: =item $seq Hash ref, the sequence we are working on
        !          1515: 
        !          1516: =item $links if defined we will output links to each resource.
        !          1517: 
        !          1518: =back
        !          1519: 
        !          1520: =cut
        !          1521: 
        !          1522: #######################################################
        !          1523: #######################################################
        !          1524: sub StudentPerformanceOnSequence {
        !          1525:     my ($student,$studentdata,$seq,$links) = @_;
        !          1526:     $links = 'no' if (! defined($links));
        !          1527:     my $Str = ''; # final result string
        !          1528:     my ($score,$max) = (0,0);
        !          1529:     my $performance_length = 0;
        !          1530:     my $symbol;
        !          1531:     my @ScoreData = ();
        !          1532:     my $partscore;
        !          1533:     foreach my $resource (@{$seq->{'contents'}}) {
        !          1534:         next if ($resource->{'type'} ne 'assessment');
        !          1535:         my $resource_data = $studentdata->{$resource->{'symb'}};
        !          1536:         foreach my $part (@{$resource->{'parts'}}) {
        !          1537:             $partscore = undef;
        !          1538:             my $weight = &Apache::lonnet::EXT('resource.'.$part.'.weight',
        !          1539:                                               $resource->{'symb'},
        !          1540:                                               $student->{'domain'},
        !          1541:                                               $student->{'username'},
        !          1542:                                               $student->{'section'});
        !          1543:             if (!defined($weight) || ($weight eq '')) { 
        !          1544:                 $weight=1;
        !          1545:             }
        !          1546:             #
        !          1547:             $max += $weight; # see the 'excused' branch below...
        !          1548:             $performance_length++; # one character per part
        !          1549:             $symbol = ' '; # default to space
        !          1550:             #
        !          1551:             my $awarded = 0;
        !          1552:             if (exists($resource_data->{'resource.'.$part.'.awarded'})) {
        !          1553:                 $awarded = $resource_data->{'resource.'.$part.'.awarded'};
        !          1554:             }
        !          1555:             #
        !          1556:             $partscore = $weight*$awarded;
        !          1557:             $score += $partscore;
        !          1558:             $symbol = $weight; 
        !          1559:             if (length($symbol) > 1) {
        !          1560:                 $symbol = '*';
        !          1561:             }
        !          1562:             if (exists($resource_data->{'resource.'.$part.'.solved'})) {
        !          1563:                 my $status = $resource_data->{'resource.'.$part.'.solved'};
        !          1564:                 if ($status eq 'excused') {
        !          1565:                     $symbol = 'x';
        !          1566:                     $max -= $weight; # Do not count 'excused' problems.
        !          1567:                 }
        !          1568:             } else {
        !          1569:                 # Unsolved.  Did they try?
        !          1570:                 if (exists($resource_data->{'resource.'.$part.'.tries'})){
        !          1571:                     $symbol = '.';
        !          1572:                 } else {
        !          1573:                     $symbol = ' ';
        !          1574:                 }
        !          1575:             }
        !          1576:             #
        !          1577:             if ( ($links eq 'yes' && $symbol ne ' ') || ($links eq 'all')) {
        !          1578:                 $symbol = '<a href="/adm/grades'.
        !          1579:                     '?symb='.&Apache::lonnet::escape($resource->{'symb'}).
        !          1580:                     '&student='.$student->{'username'}.
        !          1581:                     '&domain='.$student->{'domain'}.
        !          1582:                     '&command=submission">'.$symbol.'</a>';
        !          1583:             }
        !          1584:             if (! defined($partscore)) {
        !          1585:                 $partscore = $symbol;
        !          1586:             }
        !          1587:             push (@ScoreData,$partscore);
        !          1588:         }
        !          1589:         $Str .= $symbol;
        !          1590:     }
        !          1591:     return ($Str,$performance_length,$score,$max,\@ScoreData);
1.1       stredwic 1592: }
1.23      minaeibi 1593: 
1.28      matthew  1594: #######################################################
                   1595: #######################################################
1.23      minaeibi 1596: 
1.2       stredwic 1597: =pod
                   1598: 
                   1599: =item &CreateLegend()
                   1600: 
                   1601: This function returns a formatted string containing the legend for the
                   1602: chart.  The legend describes the symbols used to represent grades for
                   1603: problems.
                   1604: 
                   1605: =cut
                   1606: 
1.28      matthew  1607: #######################################################
                   1608: #######################################################
1.2       stredwic 1609: sub CreateLegend {
                   1610:     my $Str = "<p><pre>".
1.13      minaeibi 1611:               "   1  correct by student in 1 try\n".
                   1612:               "   7  correct by student in 7 tries\n".
1.12      minaeibi 1613:               "   *  correct by student in more than 9 tries\n".
1.20      minaeibi 1614: 	      "   +  correct by hand grading or override\n".
1.12      minaeibi 1615:               "   -  incorrect by override\n".
                   1616: 	      "   .  incorrect attempted\n".
                   1617: 	      "   #  ungraded attempted\n".
1.13      minaeibi 1618:               "      not attempted (blank field)\n".
1.12      minaeibi 1619: 	      "   x  excused".
1.17      minaeibi 1620:               "</pre><p>";
1.2       stredwic 1621:     return $Str;
                   1622: }
                   1623: 
1.28      matthew  1624: #######################################################
                   1625: #######################################################
                   1626: 
1.30      matthew  1627: =pod 
1.2       stredwic 1628: 
                   1629: =back
                   1630: 
                   1631: =cut
                   1632: 
1.28      matthew  1633: #######################################################
                   1634: #######################################################
1.2       stredwic 1635: 
1.28      matthew  1636: 1;
1.2       stredwic 1637: 
1.1       stredwic 1638: __END__

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