Annotation of loncom/interface/statistics/lonstudentassessment.pm, revision 1.89
1.1 stredwic 1: # The LearningOnline Network with CAPA
2: #
1.89 ! matthew 3: # $Id: lonstudentassessment.pm,v 1.88 2004/02/12 14:47:55 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;
1.77 matthew 55: use Apache::loncommon();
1.1 stredwic 56: use Apache::loncoursedata;
1.28 matthew 57: use Apache::lonnet; # for logging porpoises
1.75 matthew 58: use Apache::lonlocal;
1.31 matthew 59: use Spreadsheet::WriteExcel;
1.76 matthew 60: use Spreadsheet::WriteExcel::Utility();
1.31 matthew 61:
62: #######################################################
63: #######################################################
64: =pod
65:
66: =item Package Variables
67:
68: =over 4
69:
70: =item $Statistics Hash ref to store student data. Indexed by symb,
71: contains hashes with keys 'score' and 'max'.
72:
73: =cut
74:
75: #######################################################
76: #######################################################
1.1 stredwic 77:
1.30 matthew 78: my $Statistics;
79:
1.28 matthew 80: #######################################################
81: #######################################################
82:
83: =pod
84:
1.31 matthew 85: =item $show_links 'yes' or 'no' for linking to student performance data
86:
87: =item $output_mode 'html', 'excel', or 'csv' for output mode
88:
1.32 matthew 89: =item $show 'all', 'totals', or 'scores' determines how much data is output
1.31 matthew 90:
1.49 matthew 91: =item $single_student_mode evaluates to true if we are showing only one
92: student.
93:
1.31 matthew 94: =cut
95:
96: #######################################################
97: #######################################################
98: my $show_links;
99: my $output_mode;
1.87 matthew 100: my $chosen_output;
1.49 matthew 101: my $single_student_mode;
1.28 matthew 102:
1.31 matthew 103: #######################################################
104: #######################################################
105: # End of package variable declarations
1.28 matthew 106:
1.31 matthew 107: =pod
1.28 matthew 108:
1.31 matthew 109: =back
1.28 matthew 110:
1.31 matthew 111: =cut
1.28 matthew 112:
1.31 matthew 113: #######################################################
114: #######################################################
1.28 matthew 115:
1.31 matthew 116: =pod
1.28 matthew 117:
1.31 matthew 118: =item &BuildStudentAssessmentPage()
1.28 matthew 119:
1.31 matthew 120: Inputs:
1.4 stredwic 121:
1.31 matthew 122: =over 4
1.28 matthew 123:
124: =item $r Apache Request
125:
126: =item $c Apache Connection
127:
128: =back
129:
130: =cut
131:
132: #######################################################
133: #######################################################
1.1 stredwic 134: sub BuildStudentAssessmentPage {
1.30 matthew 135: my ($r,$c)=@_;
1.74 matthew 136: #
1.30 matthew 137: undef($Statistics);
1.66 matthew 138: undef($show_links);
139: undef($output_mode);
1.87 matthew 140: undef($chosen_output);
1.66 matthew 141: undef($single_student_mode);
1.74 matthew 142: #
143: my %Saveable_Parameters = ('Status' => 'scalar',
144: 'chartoutputmode' => 'scalar',
145: 'chartoutputdata' => 'scalar',
146: 'Section' => 'array',
147: 'StudentData' => 'array',
148: 'Maps' => 'array');
149: &Apache::loncommon::store_course_settings('chart',\%Saveable_Parameters);
150: &Apache::loncommon::restore_course_settings('chart',\%Saveable_Parameters);
151: #
152: &Apache::lonstatistics::PrepareClasslist();
153: #
1.65 matthew 154: $single_student_mode = 0;
1.49 matthew 155: $single_student_mode = 1 if ($ENV{'form.SelectedStudent'});
1.59 matthew 156: if ($ENV{'form.selectstudent'}) {
157: &Apache::lonstatistics::DisplayClasslist($r);
158: return;
159: }
1.30 matthew 160: #
1.31 matthew 161: # Print out the HTML headers for the interface
162: # This also parses the output mode selector
1.54 matthew 163: # This step must *always* be done.
1.30 matthew 164: $r->print(&CreateInterface());
1.31 matthew 165: $r->print('<input type="hidden" name="notfirstrun" value="true" />');
1.49 matthew 166: $r->print('<input type="hidden" name="sort" value="'.
167: $ENV{'form.sort'}.'" />');
1.7 stredwic 168: $r->rflush();
1.58 matthew 169: #
1.49 matthew 170: if (! exists($ENV{'form.notfirstrun'}) && ! $single_student_mode) {
1.31 matthew 171: return;
172: }
173: #
174: my $initialize = \&html_initialize;
175: my $output_student = \&html_outputstudent;
176: my $finish = \&html_finish;
177: #
178: if ($output_mode eq 'excel') {
179: $initialize = \&excel_initialize;
180: $output_student = \&excel_outputstudent;
181: $finish = \&excel_finish;
182: } elsif ($output_mode eq 'csv') {
183: $initialize = \&csv_initialize;
184: $output_student = \&csv_outputstudent;
185: $finish = \&csv_finish;
186: }
1.30 matthew 187: #
188: if($c->aborted()) { return ; }
1.31 matthew 189: #
1.49 matthew 190: # Determine which students we want to look at
191: my @Students;
192: if ($single_student_mode) {
193: @Students = (&Apache::lonstatistics::current_student());
194: $r->print(&next_and_previous_buttons());
195: $r->rflush();
196: } else {
197: @Students = @Apache::lonstatistics::Students;
198: }
1.56 matthew 199: #
200: # Perform generic initialization tasks
201: # Since we use lonnet::EXT to retrieve problem weights,
202: # to ensure current data we must clear the caches out.
203: # This makes sure that parameter changes at the student level
204: # are immediately reflected in the chart.
205: &Apache::lonnet::clear_EXT_cache_status();
1.69 matthew 206: #
207: # Clean out loncoursedata's package data, just to be safe.
208: &Apache::loncoursedata::clear_internal_caches();
1.49 matthew 209: #
1.31 matthew 210: # Call the initialize routine selected above
211: $initialize->($r);
1.49 matthew 212: foreach my $student (@Students) {
1.31 matthew 213: if($c->aborted()) {
214: $finish->($r);
215: return ;
1.1 stredwic 216: }
1.31 matthew 217: # Call the output_student routine selected above
218: $output_student->($r,$student);
219: }
220: # Call the "finish" routine selected above
221: $finish->($r);
222: #
223: return;
224: }
225:
226: #######################################################
227: #######################################################
1.49 matthew 228: sub next_and_previous_buttons {
229: my $Str = '';
230: $Str .= '<input type="hidden" name="SelectedStudent" value="'.
231: $ENV{'form.SelectedStudent'}.'" />';
232: #
233: # Build the previous student link
234: my $previous = &Apache::lonstatistics::previous_student();
235: my $previousbutton = '';
236: if (defined($previous)) {
237: my $sname = $previous->{'username'}.':'.$previous->{'domain'};
238: $previousbutton .= '<input type="button" value="'.
239: 'Previous Student ('.
240: $previous->{'username'}.'@'.$previous->{'domain'}.')'.
241: '" onclick="document.Statistics.SelectedStudent.value='.
242: "'".$sname."'".';'.
243: 'document.Statistics.submit();" />';
244: } else {
245: $previousbutton .= '<input type="button" value="'.
246: 'Previous student (none)'.'" />';
247: }
248: #
249: # Build the next student link
250: my $next = &Apache::lonstatistics::next_student();
251: my $nextbutton = '';
252: if (defined($next)) {
253: my $sname = $next->{'username'}.':'.$next->{'domain'};
254: $nextbutton .= '<input type="button" value="'.
255: 'Next Student ('.
256: $next->{'username'}.'@'.$next->{'domain'}.')'.
257: '" onclick="document.Statistics.SelectedStudent.value='.
258: "'".$sname."'".';'.
259: 'document.Statistics.submit();" />';
260: } else {
261: $nextbutton .= '<input type="button" value="'.
262: 'Next student (none)'.'" />';
263: }
264: #
265: # Build the 'all students' button
266: my $all = '';
267: $all .= '<input type="button" value="All Students" '.
268: '" onclick="document.Statistics.SelectedStudent.value='.
269: "''".';'.'document.Statistics.submit();" />';
270: $Str .= $previousbutton.(' 'x5).$all.(' 'x5).$nextbutton;
271: return $Str;
272: }
273:
274: #######################################################
275: #######################################################
1.30 matthew 276:
1.31 matthew 277: sub get_student_fields_to_show {
278: my @to_show = @Apache::lonstatistics::SelectedStudentData;
279: foreach (@to_show) {
280: if ($_ eq 'all') {
281: @to_show = @Apache::lonstatistics::StudentDataOrder;
282: last;
283: }
284: }
285: return @to_show;
286: }
287:
1.28 matthew 288: #######################################################
289: #######################################################
290:
291: =pod
1.2 stredwic 292:
1.28 matthew 293: =item &CreateInterface()
1.21 minaeibi 294:
1.28 matthew 295: Called by &BuildStudentAssessmentPage to create the top part of the
296: page which displays the chart.
297:
1.30 matthew 298: Inputs: None
1.28 matthew 299:
300: Returns: A string containing the HTML for the headers and top table for
301: the chart page.
302:
303: =cut
304:
305: #######################################################
306: #######################################################
1.2 stredwic 307: sub CreateInterface {
1.4 stredwic 308: my $Str = '';
1.30 matthew 309: # $Str .= &CreateLegend();
310: $Str .= '<table cellspacing="5">'."\n";
311: $Str .= '<tr>';
1.75 matthew 312: $Str .= '<td align="center"><b>'.&mt('Sections').'</b></td>';
313: $Str .= '<td align="center"><b>'.&mt('Student Data</b>').'</td>';
314: $Str .= '<td align="center"><b>'.&mt('Enrollment Status').'</b></td>';
315: $Str .= '<td align="center"><b>'.&mt('Sequences and Folders').'</b></td>';
316: $Str .= '<td align="center"><b>'.&mt('Output Format').'</b>'.
1.58 matthew 317: &Apache::loncommon::help_open_topic("Chart_Output_Formats").
318: '</td>';
1.75 matthew 319: $Str .= '<td align="center"><b>'.&mt('Output Data').'</b>'.
1.58 matthew 320: &Apache::loncommon::help_open_topic("Chart_Output_Data").
321: '</td>';
1.30 matthew 322: $Str .= '</tr>'."\n";
323: #
1.4 stredwic 324: $Str .= '<tr><td align="center">'."\n";
1.29 matthew 325: $Str .= &Apache::lonstatistics::SectionSelect('Section','multiple',5);
1.4 stredwic 326: $Str .= '</td><td align="center">';
1.30 matthew 327: my $only_seq_with_assessments = sub {
328: my $s=shift;
329: if ($s->{'num_assess'} < 1) {
330: return 0;
331: } else {
332: return 1;
333: }
334: };
335: $Str .= &Apache::lonstatistics::StudentDataSelect('StudentData','multiple',
336: 5,undef);
1.46 matthew 337: $Str .= '</td><td>'."\n";
338: $Str .= &Apache::lonhtmlcommon::StatusOptions(undef,undef,5);
1.4 stredwic 339: $Str .= '</td><td>'."\n";
1.30 matthew 340: $Str .= &Apache::lonstatistics::MapSelect('Maps','multiple,all',5,
341: $only_seq_with_assessments);
1.31 matthew 342: $Str .= '</td><td>'."\n";
343: $Str .= &CreateAndParseOutputSelector();
1.54 matthew 344: $Str .= '</td><td>'."\n";
345: $Str .= &CreateAndParseOutputDataSelector();
1.30 matthew 346: $Str .= '</td></tr>'."\n";
347: $Str .= '</table>'."\n";
1.75 matthew 348: $Str .= '<input type="submit" name="Generate Chart" value="'.
349: &mt('Generate Chart').'" />';
1.59 matthew 350: $Str .= ' 'x5;
1.75 matthew 351: $Str .= '<input type="submit" name="selectstudent" value="'.
352: &mt('Select One Student').'" />';
1.59 matthew 353: $Str .= ' 'x5;
1.75 matthew 354: $Str .= '<input type="submit" name="ClearCache" value="'.
355: &mt('Clear Caches').'" />';
1.61 www 356: $Str .= ' 'x5;
357: $Str .= '<br />';
1.4 stredwic 358: return $Str;
1.1 stredwic 359: }
1.30 matthew 360:
361: #######################################################
362: #######################################################
363:
364: =pod
365:
1.31 matthew 366: =item &CreateAndParseOutputSelector()
1.30 matthew 367:
368: =cut
369:
370: #######################################################
371: #######################################################
1.32 matthew 372: my @OutputOptions =
373: ({ name => 'HTML, with links',
374: value => 'html, with links',
1.33 matthew 375: description => 'Output HTML with each symbol linked to the problem '.
1.35 matthew 376: 'which generated it.',
377: mode => 'html',
378: show_links => 'yes',
379: },
1.47 matthew 380: { name => 'HTML, with all links',
381: value => 'html, with all links',
382: description => 'Output HTML with each symbol linked to the problem '.
383: 'which generated it. '.
384: 'This includes links for unattempted problems.',
385: mode => 'html',
386: show_links => 'all',
387: },
1.32 matthew 388: { name => 'HTML, without links',
389: value => 'html, without links',
1.33 matthew 390: description => 'Output HTML. By not including links, the size of the'.
391: ' web page is greatly reduced. If your browser crashes on the '.
1.35 matthew 392: 'full display, try this.',
393: mode => 'html',
394: show_links => 'no',
395: },
1.54 matthew 396: { name => 'Excel',
397: value => 'excel',
398: description => 'Output an Excel file (compatable with Excel 95).',
1.35 matthew 399: mode => 'excel',
400: show_links => 'no',
1.54 matthew 401: },
402: { name => 'CSV',
403: value => 'csv',
404: description => 'Output a comma seperated values file suitable for '.
1.57 matthew 405: 'import into a spreadsheet program. Using this method as opposed '.
406: 'to Excel output allows you to organize your data before importing'.
407: ' it into a spreadsheet program.',
1.35 matthew 408: mode => 'csv',
409: show_links => 'no',
410: },
1.32 matthew 411: );
412:
1.33 matthew 413: sub OutputDescriptions {
414: my $Str = '';
1.58 matthew 415: $Str .= "<h2>Output Formats</h2>\n";
1.33 matthew 416: $Str .= "<dl>\n";
417: foreach my $outputmode (@OutputOptions) {
418: $Str .=" <dt>".$outputmode->{'name'}."</dt>\n";
419: $Str .=" <dd>".$outputmode->{'description'}."</dd>\n";
420: }
421: $Str .= "</dl>\n";
422: return $Str;
423: }
424:
1.31 matthew 425: sub CreateAndParseOutputSelector {
426: my $Str = '';
1.44 matthew 427: my $elementname = 'chartoutputmode';
1.73 matthew 428: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
429: [$elementname]);
1.31 matthew 430: #
431: # Format for output options is 'mode, restrictions';
1.50 matthew 432: my $selected = 'html, without links';
1.31 matthew 433: if (exists($ENV{'form.'.$elementname})) {
434: if (ref($ENV{'form.'.$elementname} eq 'ARRAY')) {
435: $selected = $ENV{'form.'.$elementname}->[0];
436: } else {
437: $selected = $ENV{'form.'.$elementname};
438: }
439: }
440: #
441: # Set package variables describing output mode
442: $show_links = 'no';
443: $output_mode = 'html';
1.35 matthew 444: foreach my $option (@OutputOptions) {
445: next if ($option->{'value'} ne $selected);
446: $output_mode = $option->{'mode'};
447: $show_links = $option->{'show_links'};
1.31 matthew 448: }
1.35 matthew 449:
1.31 matthew 450: #
451: # Build the form element
452: $Str = qq/<select size="5" name="$elementname">/;
1.32 matthew 453: foreach my $option (@OutputOptions) {
454: $Str .= "\n".' <option value="'.$option->{'value'}.'"';
455: $Str .= " selected " if ($option->{'value'} eq $selected);
1.75 matthew 456: $Str .= ">".&mt($option->{'name'})."<\/option>";
1.31 matthew 457: }
458: $Str .= "\n</select>";
459: return $Str;
460: }
1.30 matthew 461:
1.54 matthew 462: ##
463: ## Data selector stuff
464: ##
465: my @OutputDataOptions =
1.57 matthew 466: (
1.72 matthew 467: { name => 'Scores Summary',
1.57 matthew 468: base => 'scores',
469: value => 'sum and total',
1.87 matthew 470: scores => 1,
471: tries => 0,
472: every_problem => 0,
473: sequence_sum => 1,
474: sequence_max => 1,
475: grand_total => 1,
1.89 ! matthew 476: summary_table => 1,
1.57 matthew 477: shortdesc => 'Total Score and Maximum Possible for each '.
478: 'Sequence or Folder',
479: longdesc => 'The score of each student as well as the '.
480: ' maximum possible on each Sequence or Folder.',
481: },
1.71 matthew 482: { name => 'Scores Per Problem',
1.57 matthew 483: base => 'scores',
1.71 matthew 484: value => 'scores',
1.87 matthew 485: scores => 1,
486: tries => 0,
487: correct => 0,
488: every_problem => 1,
489: sequence_sum => 1,
490: sequence_max => 1,
491: grand_total => 1,
1.89 ! matthew 492: summary_table => 1,
1.71 matthew 493: shortdesc => 'Score on each Problem Part',
494: longdesc =>'The students score on each problem part, computed as'.
495: 'the part weight * part awarded',
1.57 matthew 496: },
497: { name =>'Tries',
498: base =>'tries',
499: value => 'tries',
1.87 matthew 500: scores => 0,
501: tries => 1,
502: correct => 0,
503: every_problem => 1,
504: sequence_sum => 0,
505: sequence_max => 0,
506: grand_total => 0,
1.89 ! matthew 507: summary_table => 1,
1.57 matthew 508: shortdesc => 'Number of Tries before success on each Problem Part',
509: longdesc =>'The number of tries before success on each problem part.',
510: },
511: { name =>'Parts Correct',
512: base =>'tries',
513: value => 'parts correct total',
1.87 matthew 514: scores => 0,
515: tries => 0,
516: correct => 1,
517: every_problem => 1,
518: sequence_sum => 1,
519: sequence_max => 1,
520: grand_total => 1,
1.89 ! matthew 521: summary_table => 1,
1.57 matthew 522: shortdesc => 'Number of Problem Parts completed successfully.',
523: longdesc => 'The Number of Problem Parts completed successfully and '.
524: 'the maximum possible for each student',
525: },
526: );
527:
528: sub HTMLifyOutputDataDescriptions {
529: my $Str = '';
1.58 matthew 530: $Str .= "<h2>Output Data</h2>\n";
1.57 matthew 531: $Str .= "<dl>\n";
532: foreach my $option (@OutputDataOptions) {
533: $Str .= ' <dt>'.$option->{'name'}.'</dt>';
534: $Str .= '<dd>'.$option->{'longdesc'}.'</dd>'."\n";
535: }
536: $Str .= "</dl>\n";
537: return $Str;
538: }
1.54 matthew 539:
540: sub CreateAndParseOutputDataSelector {
541: my $Str = '';
542: my $elementname = 'chartoutputdata';
543: #
544: my $selected = 'scores';
545: if (exists($ENV{'form.'.$elementname})) {
546: if (ref($ENV{'form.'.$elementname} eq 'ARRAY')) {
547: $selected = $ENV{'form.'.$elementname}->[0];
548: } else {
549: $selected = $ENV{'form.'.$elementname};
550: }
551: }
552: #
1.87 matthew 553: $chosen_output = $OutputDataOptions[0];
1.54 matthew 554: foreach my $option (@OutputDataOptions) {
555: if ($option->{'value'} eq $selected) {
1.87 matthew 556: $chosen_output = $option;
1.54 matthew 557: }
558: }
559: #
560: # Build the form element
561: $Str = qq/<select size="5" name="$elementname">/;
562: foreach my $option (@OutputDataOptions) {
563: $Str .= "\n".' <option value="'.$option->{'value'}.'"';
1.87 matthew 564: $Str .= " selected " if ($option->{'value'} eq $chosen_output->{'value'});
1.75 matthew 565: $Str .= ">".&mt($option->{'name'})."<\/option>";
1.54 matthew 566: }
567: $Str .= "\n</select>";
568: return $Str;
569:
570: }
571:
1.28 matthew 572: #######################################################
573: #######################################################
1.1 stredwic 574:
1.28 matthew 575: =pod
576:
1.31 matthew 577: =head2 HTML output routines
1.28 matthew 578:
1.31 matthew 579: =item &html_initialize($r)
1.28 matthew 580:
1.31 matthew 581: Create labels for the columns of student data to show.
1.28 matthew 582:
1.31 matthew 583: =item &html_outputstudent($r,$student)
1.28 matthew 584:
1.31 matthew 585: Return a line of the chart for a student.
1.28 matthew 586:
1.31 matthew 587: =item &html_finish($r)
1.28 matthew 588:
589: =cut
590:
591: #######################################################
592: #######################################################
1.31 matthew 593: {
594: my $padding;
595: my $count;
596:
1.39 matthew 597: my $nodata_count; # The number of students for which there is no data
598: my %prog_state; # progress state used by loncommon PrgWin routines
599:
1.31 matthew 600: sub html_initialize {
601: my ($r) = @_;
1.30 matthew 602: #
603: $padding = ' 'x3;
1.35 matthew 604: $count = 0;
1.39 matthew 605: $nodata_count = 0;
1.66 matthew 606: undef(%prog_state);
1.30 matthew 607: #
1.38 matthew 608: $r->print("<h3>".$ENV{'course.'.$ENV{'request.course.id'}.'.description'}.
609: " ".localtime(time)."</h3>");
1.39 matthew 610:
1.87 matthew 611: if ($chosen_output->{'base'} !~ /^final table/) {
612: $r->print("<h3>".$chosen_output->{'shortdesc'}."</h3>");
1.39 matthew 613: }
1.31 matthew 614: my $Str = "<pre>\n";
1.30 matthew 615: # First, the @StudentData fields need to be listed
1.31 matthew 616: my @to_show = &get_student_fields_to_show();
1.30 matthew 617: foreach my $field (@to_show) {
618: my $title=$Apache::lonstatistics::StudentData{$field}->{'title'};
619: my $base =$Apache::lonstatistics::StudentData{$field}->{'base_width'};
620: my $width=$Apache::lonstatistics::StudentData{$field}->{'width'};
621: $Str .= $title.' 'x($width-$base).$padding;
622: }
1.89 ! matthew 623: #
! 624: # Compute the column widths and output the sequence titles
1.40 matthew 625: foreach my $sequence (&Apache::lonstatistics::Sequences_with_Assess()){
1.89 ! matthew 626: #
! 627: # Comptue column widths
! 628: $sequence->{'width_sum'} = 0;
! 629: if ($chosen_output->{'sequence_sum'}) {
! 630: # Use 3 digits for the sum
! 631: $sequence->{'width_sum'} = 3;
! 632: }
! 633: if ($chosen_output->{'sequence_max'}) {
! 634: if ($sequence->{'width_sum'}>0) {
! 635: # One digit for the '/'
! 636: $sequence->{'width_sum'} +=1;
! 637: }
! 638: # Use 3 digits for the total
! 639: $sequence->{'width_sum'}+=3;
! 640: }
! 641: if ($chosen_output->{'every_problem'}) {
! 642: # one problem per digit
! 643: $sequence->{'width_problem'} = $sequence->{'num_assess_parts'};
! 644: } else {
! 645: $sequence->{'width_problem'} = 0;
! 646: }
! 647: $sequence->{'width_total'} = $sequence->{'width_problem'} +
! 648: $sequence->{'width_sum'};
! 649: if ($sequence->{'width_total'} < length($sequence->{'title'})) {
! 650: $sequence->{'width_total'} = length($sequence->{'title'});
! 651: $sequence->{'width_problem'} =
! 652: $sequence->{'width_total'} - $sequence->{'width_sum'};
! 653: }
! 654: #
! 655: # Output the sequence titles
! 656: $Str .=
! 657: $sequence->{'title'}.' 'x($sequence->{'width_total'}-
! 658: length($sequence->{'title'})
! 659: ).$padding;
1.30 matthew 660: }
1.54 matthew 661: $Str .= "total</pre>\n";
1.31 matthew 662: $Str .= "<pre>";
663: $r->print($Str);
664: $r->rflush();
665: return;
1.30 matthew 666: }
667:
1.31 matthew 668: sub html_outputstudent {
669: my ($r,$student) = @_;
1.2 stredwic 670: my $Str = '';
1.35 matthew 671: #
1.87 matthew 672: if($count++ % 5 == 0 && $count > 0) {
1.35 matthew 673: $r->print("</pre><pre>");
674: }
1.30 matthew 675: # First, the @StudentData fields need to be listed
1.31 matthew 676: my @to_show = &get_student_fields_to_show();
1.30 matthew 677: foreach my $field (@to_show) {
678: my $title=$student->{$field};
1.31 matthew 679: my $base = length($title);
1.30 matthew 680: my $width=$Apache::lonstatistics::StudentData{$field}->{'width'};
681: $Str .= $title.' 'x($width-$base).$padding;
682: }
683: # Get ALL the students data
684: my %StudentsData;
685: my @tmp = &Apache::loncoursedata::get_current_state
686: ($student->{'username'},$student->{'domain'},undef,
687: $ENV{'request.course.id'});
688: if ((scalar @tmp > 0) && ($tmp[0] !~ /^error:/)) {
689: %StudentsData = @tmp;
690: }
691: if (scalar(@tmp) < 1) {
1.39 matthew 692: $nodata_count++;
1.30 matthew 693: $Str .= '<font color="blue">No Course Data</font>'."\n";
1.31 matthew 694: $r->print($Str);
695: $r->rflush();
696: return;
1.30 matthew 697: }
698: #
699: # By sequence build up the data
700: my $studentstats;
1.31 matthew 701: my $PerformanceStr = '';
1.40 matthew 702: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
1.54 matthew 703: my ($performance,$performance_length,$score,$seq_max,$rawdata);
1.87 matthew 704: if ($chosen_output->{'tries'}) {
1.54 matthew 705: ($performance,$performance_length,$score,$seq_max,$rawdata) =
706: &StudentTriesOnSequence($student,\%StudentsData,
707: $seq,$show_links);
708: } else {
709: ($performance,$performance_length,$score,$seq_max,$rawdata) =
710: &StudentPerformanceOnSequence($student,\%StudentsData,
711: $seq,$show_links);
712: }
1.89 ! matthew 713: my $ratio='';
! 714: if ($chosen_output->{'sequence_sum'}) {
! 715: $ratio .= sprintf("%3d",$score);
! 716: }
! 717: if ($chosen_output->{'sequence_max'}) {
! 718: if ($chosen_output->{'sequence_sum'}) {
! 719: $ratio .= '/';
! 720: }
! 721: $ratio .= sprintf("%3d",$seq_max);
! 722: }
1.31 matthew 723: #
1.89 ! matthew 724: if (! $chosen_output->{'every_problem'}) {
! 725: $performance = '';
1.30 matthew 726: }
1.89 ! matthew 727: $performance .= ' 'x($seq->{'width_problem'}-$performance_length).
! 728: $ratio;
1.31 matthew 729: #
730: $Str .= $performance.$padding;
731: #
732: $studentstats->{$seq->{'symb'}}->{'score'}= $score;
733: $studentstats->{$seq->{'symb'}}->{'max'} = $seq_max;
1.30 matthew 734: }
735: #
736: # Total it up and store the statistics info.
737: my ($score,$max) = (0,0);
738: while (my ($symb,$seq_stats) = each (%{$studentstats})) {
739: $Statistics->{$symb}->{'score'} += $seq_stats->{'score'};
1.54 matthew 740: if ($Statistics->{$symb}->{'max'} < $seq_stats->{'max'}) {
741: $Statistics->{$symb}->{'max'} = $seq_stats->{'max'};
742: }
1.30 matthew 743: $score += $seq_stats->{'score'};
744: $max += $seq_stats->{'max'};
745: }
1.31 matthew 746: $Str .= ' '.' 'x(length($max)-length($score)).$score.'/'.$max;
1.30 matthew 747: $Str .= " \n";
1.39 matthew 748: #
1.31 matthew 749: $r->print($Str);
750: #
751: $r->rflush();
752: return;
1.30 matthew 753: }
1.2 stredwic 754:
1.31 matthew 755: sub html_finish {
756: my ($r) = @_;
1.39 matthew 757: #
758: # Check for suppressed output and close the progress window if so
1.87 matthew 759: $r->print("</pre>\n");
1.49 matthew 760: if ($single_student_mode) {
761: $r->print(&SingleStudentTotal());
762: } else {
763: $r->print(&StudentAverageTotal());
764: }
1.31 matthew 765: $r->rflush();
766: return;
767: }
768:
1.39 matthew 769: sub StudentAverageTotal {
770: my $Str = "<h3>Summary Tables</h3>\n";
771: my $num_students = scalar(@Apache::lonstatistics::Students);
772: my $total_ave = 0;
773: my $total_max = 0;
774: $Str .= '<table border=2 cellspacing="1">'."\n";
775: $Str .= "<tr><th>Title</th><th>Average</th><th>Maximum</th></tr>\n";
1.40 matthew 776: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
1.42 matthew 777: my $ave;
778: if ($num_students > $nodata_count) {
779: $ave = int(100*($Statistics->{$seq->{'symb'}}->{'score'}/
780: ($num_students-$nodata_count)))/100;
781: } else {
782: $ave = 0;
783: }
1.39 matthew 784: $total_ave += $ave;
1.54 matthew 785: my $max = $Statistics->{$seq->{'symb'}}->{'max'};
1.39 matthew 786: $total_max += $max;
1.82 matthew 787: $ave = sprintf("%.2f",$ave);
1.39 matthew 788: $Str .= '<tr><td>'.$seq->{'title'}.'</td>'.
1.82 matthew 789: '<td align="right">'.$ave.' </td>'.
790: '<td align="right">'.$max.' '.'</td></tr>'."\n";
1.39 matthew 791: }
1.82 matthew 792: $total_ave = sprintf('%.2f',$total_ave); # only two digit
1.39 matthew 793: $Str .= "</table>\n";
794: $Str .= '<table border=2 cellspacing="1">'."\n";
795: $Str .= '<tr><th>Number of Students</th><th>Average</th>'.
796: "<th>Maximum</th></tr>\n";
1.82 matthew 797: $Str .= '<tr>'.
798: '<td align="right">'.($num_students-$nodata_count).'</td>'.
799: '<td align="right">'.$total_ave.' '.'</td>'.
800: '<td align="right">'.$total_max.' '.'</td>';
1.39 matthew 801: $Str .= "</table>\n";
802: return $Str;
803: }
804:
1.49 matthew 805: sub SingleStudentTotal {
806: my $student = &Apache::lonstatistics::current_student();
1.52 matthew 807: my $Str = "<h3>Summary table for ".$student->{'fullname'}." ".
808: $student->{'username'}.'@'.$student->{'domain'}."</h3>\n";
1.49 matthew 809: $Str .= '<table border=2 cellspacing="1">'."\n";
810: $Str .=
811: "<tr><th>Sequence or Folder</th><th>Score</th><th>Maximum</th></tr>\n";
812: my $total = 0;
813: my $total_max = 0;
814: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
815: my $value = $Statistics->{$seq->{'symb'}}->{'score'};
816: my $max = $Statistics->{$seq->{'symb'}}->{'max'};
817: $Str .= '<tr><td>'.$seq->{'title'}.'</td>'.
818: '<td align="right">'.$value.'</td>'.
819: '<td align="right">'.$max.'</td></tr>'."\n";
820: $total += $value;
821: $total_max +=$max;
822: }
823: $Str .= '<tr><td><b>Total</b></td>'.
824: '<td align="right">'.$total.'</td>'.
825: '<td align="right">'.$total_max."</td></tr>\n";
826: $Str .= "</table>\n";
827: return $Str;
828: }
829:
1.31 matthew 830: }
831:
832: #######################################################
833: #######################################################
834:
835: =pod
836:
837: =head2 EXCEL subroutines
838:
839: =item &excel_initialize($r)
840:
841: =item &excel_outputstudent($r,$student)
842:
843: =item &excel_finish($r)
844:
845: =cut
846:
847: #######################################################
848: #######################################################
849: {
850:
851: my $excel_sheet;
1.32 matthew 852: my $excel_workbook;
853:
854: my $filename;
855: my $rows_output;
856: my $cols_output;
857:
1.36 matthew 858: my %prog_state; # progress window state
1.54 matthew 859: my $request_aborted;
1.31 matthew 860:
1.76 matthew 861: my $total_formula;
862:
1.31 matthew 863: sub excel_initialize {
864: my ($r) = @_;
865: #
1.66 matthew 866: undef ($excel_sheet);
867: undef ($excel_workbook);
868: undef ($filename);
869: undef ($rows_output);
870: undef ($cols_output);
871: undef (%prog_state);
872: undef ($request_aborted);
1.76 matthew 873: undef ($total_formula);
1.66 matthew 874: #
1.54 matthew 875: my $total_columns = scalar(&get_student_fields_to_show());
1.88 matthew 876:
1.54 matthew 877: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
1.88 matthew 878: if ($chosen_output->{'every_problem'}) {
879: $total_columns += $seq->{'num_assess_parts'};
880: }
1.87 matthew 881: # Add 2 because we need a 'sequence_sum' and 'total' column for each
1.88 matthew 882: $total_columns += 2;
1.54 matthew 883: }
1.87 matthew 884: if ($chosen_output->{'base'} eq 'tries' && $total_columns > 255) {
1.54 matthew 885: $r->print(<<END);
886: <h2>Unable to Complete Request</h2>
887: <p>
888: LON-CAPA is unable to produce your Excel spreadsheet because your selections
889: will result in more than 255 columns. Excel allows only 255 columns in a
890: spreadsheet.
891: </p><p>
892: You may consider reducing the number of <b>Sequences or Folders</b> you
893: have selected.
894: </p><p>
895: LON-CAPA can produce <b>CSV</b> files of this data or Excel files of the
896: summary data (<b>Parts Correct</b> or <b>Parts Correct & Totals</b>).
897: </p>
898: END
899: $request_aborted = 1;
900: }
1.87 matthew 901: if ($chosen_output->{'base'} eq 'scores' && $total_columns > 255) {
1.54 matthew 902: $r->print(<<END);
903: <h2>Unable to Complete Request</h2>
904: <p>
905: LON-CAPA is unable to produce your Excel spreadsheet because your selections
906: will result in more than 255 columns. Excel allows only 255 columns in a
907: spreadsheet.
908: </p><p>
909: You may consider reducing the number of <b>Sequences or Folders</b> you
910: have selected.
911: </p><p>
912: LON-CAPA can produce <b>CSV</b> files of this data or Excel files of the
1.80 matthew 913: <b>Scores Summary</b> data.
1.54 matthew 914: </p>
915: END
916: $request_aborted = 1;
917: }
918: return if ($request_aborted);
919: #
1.32 matthew 920: $filename = '/prtspool/'.
1.31 matthew 921: $ENV{'user.name'}.'_'.$ENV{'user.domain'}.'_'.
922: time.'_'.rand(1000000000).'.xls';
1.32 matthew 923: #
924: $excel_workbook = undef;
925: $excel_sheet = undef;
926: #
927: $rows_output = 0;
928: $cols_output = 0;
929: #
930: # Create sheet
931: $excel_workbook = Spreadsheet::WriteExcel->new('/home/httpd'.$filename);
932: #
933: # Check for errors
934: if (! defined($excel_workbook)) {
1.31 matthew 935: $r->log_error("Error creating excel spreadsheet $filename: $!");
936: $r->print("Problems creating new Excel file. ".
937: "This error has been logged. ".
938: "Please alert your LON-CAPA administrator");
1.32 matthew 939: return ;
1.31 matthew 940: }
941: #
942: # The excel spreadsheet stores temporary data in files, then put them
943: # together. If needed we should be able to disable this (memory only).
944: # The temporary directory must be specified before calling 'addworksheet'.
945: # File::Temp is used to determine the temporary directory.
1.32 matthew 946: $excel_workbook->set_tempdir($Apache::lonnet::tmpdir);
947: #
948: # Add a worksheet
1.33 matthew 949: my $sheetname = $ENV{'course.'.$ENV{'request.course.id'}.'.description'};
1.67 matthew 950: $sheetname = &Apache::loncommon::clean_excel_name($sheetname);
1.33 matthew 951: $excel_sheet = $excel_workbook->addworksheet($sheetname);
1.32 matthew 952: #
1.85 matthew 953: # Define some potentially useful formats
954: my $format;
955: $format->{'header'} = $excel_workbook->add_format(bold => 1,
956: bottom => 1,
957: align => 'center');
958: $format->{'bold'} = $excel_workbook->add_format(bold=>1);
959: $format->{'h1'} = $excel_workbook->add_format(bold=>1, size=>18);
960: $format->{'h2'} = $excel_workbook->add_format(bold=>1, size=>16);
961: $format->{'h3'} = $excel_workbook->add_format(bold=>1, size=>14);
962: $format->{'date'} = $excel_workbook->add_format(num_format=>
963: 'mmm d yyyy hh:mm AM/PM');
964: #
1.34 matthew 965: # Put the course description in the header
966: $excel_sheet->write($rows_output,$cols_output++,
1.85 matthew 967: $ENV{'course.'.$ENV{'request.course.id'}.'.description'},
968: $format->{'h1'});
1.34 matthew 969: $cols_output += 3;
970: #
971: # Put a description of the sections listed
972: my $sectionstring = '';
973: my @Sections = @Apache::lonstatistics::SelectedSections;
974: if (scalar(@Sections) > 1) {
975: if (scalar(@Sections) > 2) {
976: my $last = pop(@Sections);
977: $sectionstring = "Sections ".join(', ',@Sections).', and '.$last;
978: } else {
979: $sectionstring = "Sections ".join(' and ',@Sections);
980: }
981: } else {
982: if ($Sections[0] eq 'all') {
983: $sectionstring = "All sections";
984: } else {
985: $sectionstring = "Section ".$Sections[0];
986: }
987: }
1.85 matthew 988: $excel_sheet->write($rows_output,$cols_output++,$sectionstring,
989: $format->{'h3'});
1.34 matthew 990: $cols_output += scalar(@Sections);
991: #
992: # Put the date in there too
1.54 matthew 993: $excel_sheet->write($rows_output++,$cols_output++,
1.85 matthew 994: 'Compiled on '.localtime(time),$format->{'h3'});
1.34 matthew 995: #
1.54 matthew 996: $cols_output = 0;
1.87 matthew 997: $excel_sheet->write($rows_output++,$cols_output++,
998: $chosen_output->{'shortdesc'},
1.85 matthew 999: $format->{'h3'});
1.54 matthew 1000: #
1.86 matthew 1001: # Figure out the rows we need
1002: my $sequence_name_row = $rows_output+1;
1003: my $resource_name_row = $sequence_name_row+1;
1004: my $maximum_data_row = $sequence_name_row+2;
1005: my $first_data_row = $sequence_name_row+3;
1006: #
1.32 matthew 1007: # Add the student headers
1.34 matthew 1008: $cols_output = 0;
1.32 matthew 1009: foreach my $field (&get_student_fields_to_show()) {
1.86 matthew 1010: $excel_sheet->write($resource_name_row,$cols_output++,$field,
1.85 matthew 1011: $format->{'bold'});
1.32 matthew 1012: }
1013: #
1.54 matthew 1014: # Add the remaining column headers
1.76 matthew 1015: my $total_formula_string = '=0';
1.40 matthew 1016: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
1.86 matthew 1017: $excel_sheet->write($sequence_name_row,,
1.85 matthew 1018: $cols_output,$seq->{'title'},$format->{'h3'});
1.86 matthew 1019: # Determine starting cell
1020: $seq->{'Excel:startcell'}=
1021: &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell
1022: ($maximum_data_row,$cols_output);
1023: $seq->{'Excel:startcol'}=$cols_output;
1.87 matthew 1024: my $count = 0;
1025: if ($chosen_output->{'every_problem'}) {
1.76 matthew 1026: # Put the names of the problems and parts into the sheet
1.54 matthew 1027: foreach my $res (@{$seq->{'contents'}}) {
1.84 matthew 1028: if ($res->{'type'} ne 'assessment' ||
1029: ! exists($res->{'parts'}) ||
1030: ref($res->{'parts'}) ne 'ARRAY' ||
1031: scalar(@{$res->{'parts'}}) < 1) {
1032: next;
1033: }
1.54 matthew 1034: if (scalar(@{$res->{'parts'}}) > 1) {
1035: foreach my $part (@{$res->{'parts'}}) {
1.86 matthew 1036: $excel_sheet->write($resource_name_row,
1.54 matthew 1037: $cols_output++,
1.85 matthew 1038: $res->{'title'}.' part '.$part,
1039: $format->{'bold'});
1.54 matthew 1040: }
1041: } else {
1.86 matthew 1042: $excel_sheet->write($resource_name_row,
1.54 matthew 1043: $cols_output++,
1.85 matthew 1044: $res->{'title'},$format->{'bold'});
1.54 matthew 1045: }
1.82 matthew 1046: $count++;
1.54 matthew 1047: }
1.79 matthew 1048: }
1.87 matthew 1049: # Determine ending cell
1050: if ($count <= 1) {
1051: $seq->{'Excel:endcell'} = $seq->{'Excel:startcell'};
1052: $seq->{'Excel:endcol'} = $seq->{'Excel:startcol'};
1053: } else {
1054: $seq->{'Excel:endcell'} =
1055: &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell
1056: ($maximum_data_row,$cols_output-1);
1057: $seq->{'Excel:endcol'} = $cols_output-1;
1058: }
1059: # Create the formula for summing up this sequence
1060: if (! exists($seq->{'Excel:endcell'}) ||
1061: ! defined($seq->{'Excel:endcell'})) {
1062: $seq->{'Excel:endcell'} = $seq->{'Excel:startcell'};
1063: }
1064: $seq->{'Excel:sum'}= $excel_sheet->store_formula
1065: ('=SUM('.$seq->{'Excel:startcell'}.
1066: ':'.$seq->{'Excel:endcell'}.')');
1.79 matthew 1067: # Determine cell the score is held in
1068: $seq->{'Excel:scorecell'} =
1069: &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell
1.86 matthew 1070: ($maximum_data_row,$cols_output);
1.79 matthew 1071: $seq->{'Excel:scorecol'}=$cols_output;
1.87 matthew 1072: if ($chosen_output->{'base'} eq 'parts correct total') {
1.86 matthew 1073: $excel_sheet->write($resource_name_row,$cols_output++,
1074: 'parts correct',
1.85 matthew 1075: $format->{'bold'});
1.87 matthew 1076: } elsif ($chosen_output->{'sequence_sum'}) {
1077: if ($chosen_output->{'correct'}) {
1078: # Only reporting the number correct, so do not call it score
1079: $excel_sheet->write($resource_name_row,$cols_output++,
1080: 'sum',
1081: $format->{'bold'});
1082: } else {
1083: $excel_sheet->write($resource_name_row,$cols_output++,
1084: 'score',
1085: $format->{'bold'});
1086: }
1.32 matthew 1087: }
1.79 matthew 1088: #
1089: $total_formula_string.='+'.
1090: &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell
1.86 matthew 1091: ($maximum_data_row,$cols_output-1);
1.87 matthew 1092: if ($chosen_output->{'sequence_max'}) {
1093: $excel_sheet->write($resource_name_row,$cols_output++,
1094: 'maximum',
1095: $format->{'bold'});
1096: }
1097: }
1098: if ($chosen_output->{'grand_total'}) {
1099: $excel_sheet->write($resource_name_row,$cols_output++,'Total',
1.85 matthew 1100: $format->{'bold'});
1.32 matthew 1101: }
1.76 matthew 1102: $total_formula = $excel_sheet->store_formula($total_formula_string);
1.32 matthew 1103: #
1.87 matthew 1104: # Output a row for MAX, if appropriate
1105: if ($chosen_output->{'scores'}) {
1106: $cols_output = 0;
1107: foreach my $field (&get_student_fields_to_show()) {
1108: if ($field eq 'username' || $field eq 'fullname' ||
1109: $field eq 'id') {
1110: $excel_sheet->write($maximum_data_row,$cols_output++,'Maximum',
1111: $format->{'bold'});
1112: } else {
1113: $excel_sheet->write($maximum_data_row,$cols_output++,'');
1114: }
1.54 matthew 1115: }
1.87 matthew 1116: #
1117: # Add the maximums for each sequence or assessment
1118: my %total_cell_translation;
1119: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
1120: $cols_output=$seq->{'Excel:startcol'};
1121: $total_cell_translation{$seq->{'Excel:scorecell'}} =
1122: &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell
1123: ($maximum_data_row,$seq->{'Excel:scorecol'});
1124: my $weight;
1125: my $max = 0;
1126: foreach my $resource (@{$seq->{'contents'}}) {
1127: next if ($resource->{'type'} ne 'assessment');
1128: foreach my $part (@{$resource->{'parts'}}) {
1129: $weight = 1;
1130: if ($chosen_output->{'scores'}) {
1131: $weight = &Apache::lonnet::EXT
1132: ('resource.'.$part.'.weight',$resource->{'symb'},
1133: undef,undef,undef);
1134: if (!defined($weight) || ($weight eq '')) {
1135: $weight=1;
1136: }
1137: }
1138: if ($chosen_output->{'scores'} &&
1139: $chosen_output->{'every_problem'}) {
1140: $excel_sheet->write($maximum_data_row,$cols_output++,
1141: $weight);
1.54 matthew 1142: }
1.87 matthew 1143: $max += $weight;
1.54 matthew 1144: }
1.87 matthew 1145: }
1146: #
1147: if ($chosen_output->{'sequence_sum'} &&
1148: $chosen_output->{'every_problem'}) {
1149: my %replaceCells;
1150: $replaceCells{$seq->{'Excel:startcell'}} =
1151: &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell
1152: ($maximum_data_row,$seq->{'Excel:startcol'});
1153: $replaceCells{$seq->{'Excel:endcell'}} =
1154: &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell
1155: ($maximum_data_row,$seq->{'Excel:endcol'});
1156: $excel_sheet->repeat_formula($maximum_data_row,$cols_output++,
1157: $seq->{'Excel:sum'},undef,
1158: %replaceCells);
1159: } elsif ($chosen_output->{'sequence_sum'}) {
1160: $excel_sheet->write($maximum_data_row,$cols_output++,$max);
1161: }
1162: if ($chosen_output->{'sequence_max'}) {
1163: $excel_sheet->write($maximum_data_row,$cols_output++,$max);
1.45 matthew 1164: }
1.87 matthew 1165: #
1.45 matthew 1166: }
1.87 matthew 1167: if ($chosen_output->{'grand_total'}) {
1.86 matthew 1168: $excel_sheet->repeat_formula($maximum_data_row,$cols_output++,
1.87 matthew 1169: $total_formula,undef,
1170: %total_cell_translation);
1.79 matthew 1171: }
1.87 matthew 1172: } # End of MAXIMUM row output if ($chosen_output->{'scores'}) {
1.86 matthew 1173: $rows_output = $first_data_row;
1.32 matthew 1174: #
1175: # Let the user know what we are doing
1176: my $studentcount = scalar(@Apache::lonstatistics::Students);
1.85 matthew 1177: if ($ENV{'form.SelectedStudent'}) {
1178: $studentcount = '1';
1179: }
1180: if ($studentcount > 1) {
1181: $r->print('<h1>'.&mt('Compiling Excel spreadsheet for [_1] students',
1182: $studentcount)."</h1>\n");
1183: } else {
1184: $r->print('<h1>'.
1185: &mt('Compiling Excel spreadsheet for 1 student').
1186: "</h1>\n");
1187: }
1.32 matthew 1188: $r->rflush();
1.31 matthew 1189: #
1.36 matthew 1190: # Initialize progress window
1191: %prog_state=&Apache::lonhtmlcommon::Create_PrgWin
1192: ($r,'Excel File Compilation Status',
1193: 'Excel File Compilation Progress', $studentcount);
1194: #
1.62 matthew 1195: &Apache::lonhtmlcommon::Update_PrgWin($r,\%prog_state,
1196: 'Processing first student');
1.31 matthew 1197: return;
1198: }
1199:
1200: sub excel_outputstudent {
1201: my ($r,$student) = @_;
1.54 matthew 1202: return if ($request_aborted);
1.32 matthew 1203: return if (! defined($excel_sheet));
1204: $cols_output=0;
1205: #
1206: # Write out student data
1207: my @to_show = &get_student_fields_to_show();
1208: foreach my $field (@to_show) {
1209: $excel_sheet->write($rows_output,$cols_output++,$student->{$field});
1210: }
1211: #
1212: # Get student assessment data
1213: my %StudentsData;
1214: my @tmp = &Apache::loncoursedata::get_current_state($student->{'username'},
1215: $student->{'domain'},
1216: undef,
1217: $ENV{'request.course.id'});
1218: if ((scalar @tmp > 0) && ($tmp[0] !~ /^error:/)) {
1219: %StudentsData = @tmp;
1220: }
1221: #
1222: # Write out sequence scores and totals data
1.76 matthew 1223: my %total_cell_translation;
1.40 matthew 1224: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
1.85 matthew 1225: $cols_output = $seq->{'Excel:startcol'};
1.76 matthew 1226: # Keep track of cells to translate in total cell
1227: $total_cell_translation{$seq->{'Excel:scorecell'}} =
1228: &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell
1229: ($rows_output,$seq->{'Excel:scorecol'});
1230: #
1.54 matthew 1231: my ($performance,$performance_length,$score,$seq_max,$rawdata);
1.87 matthew 1232: if ($chosen_output->{'tries'} || $chosen_output->{'correct'}){
1.54 matthew 1233: ($performance,$performance_length,$score,$seq_max,$rawdata) =
1234: &StudentTriesOnSequence($student,\%StudentsData,
1235: $seq,'no');
1236: } else {
1237: ($performance,$performance_length,$score,$seq_max,$rawdata) =
1238: &StudentPerformanceOnSequence($student,\%StudentsData,
1239: $seq,'no');
1.87 matthew 1240: }
1241: if ($chosen_output->{'every_problem'}) {
1242: if ($chosen_output->{'correct'}) {
1243: # only indiciate if each item is correct or not
1244: foreach my $value (@$rawdata) {
1245: # nonzero means correct
1246: $value = 1 if ($value > 0);
1247: $excel_sheet->write($rows_output,$cols_output++,$value);
1248: }
1249: } else {
1250: foreach my $value (@$rawdata) {
1251: $excel_sheet->write($rows_output,$cols_output++,$value);
1252: }
1253: }
1.54 matthew 1254: }
1.87 matthew 1255: if ($chosen_output->{'sequence_sum'} &&
1256: $chosen_output->{'every_problem'}) {
1.76 matthew 1257: # Write a formula for the sum of this sequence
1258: my %replaceCells;
1259: $replaceCells{$seq->{'Excel:startcell'}} =
1260: &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell
1261: ($rows_output,$seq->{'Excel:startcol'});
1262: $replaceCells{$seq->{'Excel:endcell'}} =
1263: &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell
1264: ($rows_output,$seq->{'Excel:endcol'});
1265: # The undef is for the format
1.81 matthew 1266: if (scalar(keys(%replaceCells)) == 1) {
1267: $excel_sheet->repeat_formula($rows_output,$cols_output++,
1268: $seq->{'Excel:sum'},undef,
1269: %replaceCells,%replaceCells);
1270: } else {
1271: $excel_sheet->repeat_formula($rows_output,$cols_output++,
1272: $seq->{'Excel:sum'},undef,
1273: %replaceCells);
1274: }
1.87 matthew 1275: } elsif ($chosen_output->{'sequence_sum'}) {
1.32 matthew 1276: $excel_sheet->write($rows_output,$cols_output++,$score);
1277: }
1.87 matthew 1278: if ($chosen_output->{'sequence_max'}) {
1.32 matthew 1279: $excel_sheet->write($rows_output,$cols_output++,$seq_max);
1280: }
1281: }
1.76 matthew 1282: #
1.87 matthew 1283: if ($chosen_output->{'grand_total'}) {
1284: $excel_sheet->repeat_formula($rows_output,$cols_output++,
1285: $total_formula,undef,
1286: %total_cell_translation);
1287: }
1.32 matthew 1288: #
1289: # Bookkeeping
1290: $rows_output++;
1291: $cols_output=0;
1292: #
1.36 matthew 1293: # Update the progress window
1294: &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,'last student');
1.32 matthew 1295: return;
1.31 matthew 1296: }
1297:
1298: sub excel_finish {
1299: my ($r) = @_;
1.54 matthew 1300: return if ($request_aborted);
1.32 matthew 1301: return if (! defined($excel_sheet));
1302: #
1303: # Write the excel file
1304: $excel_workbook->close();
1305: my $c = $r->connection();
1306: #
1307: return if($c->aborted());
1308: #
1.36 matthew 1309: # Close the progress window
1310: &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
1311: #
1.32 matthew 1312: # Tell the user where to get their excel file
1.36 matthew 1313: $r->print('<br />'.
1.32 matthew 1314: '<a href="'.$filename.'">Your Excel spreadsheet.</a>'."\n");
1315: $r->rflush();
1316: return;
1.31 matthew 1317: }
1318:
1319: }
1.30 matthew 1320: #######################################################
1321: #######################################################
1322:
1323: =pod
1324:
1.31 matthew 1325: =head2 CSV output routines
1326:
1327: =item &csv_initialize($r)
1328:
1329: =item &csv_outputstudent($r,$student)
1330:
1331: =item &csv_finish($r)
1.30 matthew 1332:
1333: =cut
1334:
1335: #######################################################
1336: #######################################################
1.31 matthew 1337: {
1338:
1.37 matthew 1339: my $outputfile;
1340: my $filename;
1.54 matthew 1341: my $request_aborted;
1.37 matthew 1342: my %prog_state; # progress window state
1343:
1.31 matthew 1344: sub csv_initialize{
1345: my ($r) = @_;
1.37 matthew 1346: #
1347: # Clean up
1.66 matthew 1348: undef($outputfile);
1349: undef($filename);
1350: undef($request_aborted);
1.37 matthew 1351: undef(%prog_state);
1352: #
1.54 matthew 1353: # Deal with unimplemented requests
1354: $request_aborted = undef;
1.87 matthew 1355: if ($chosen_output->{'base'} =~ /final table/) {
1.54 matthew 1356: $r->print(<<END);
1357: <h2>Unable to Complete Request</h2>
1358: <p>
1359: The <b>Summary Table (Scores)</b> option is not available for non-HTML output.
1360: </p>
1361: END
1362: $request_aborted = 1;
1363: }
1364: return if ($request_aborted);
1.87 matthew 1365: #
1366: # Initialize progress window
1367: my $studentcount = scalar(@Apache::lonstatistics::Students);
1368: %prog_state=&Apache::lonhtmlcommon::Create_PrgWin
1369: ($r,'CSV File Compilation Status',
1370: 'CSV File Compilation Progress', $studentcount);
1.54 matthew 1371: #
1.37 matthew 1372: # Open a file
1373: $filename = '/prtspool/'.
1374: $ENV{'user.name'}.'_'.$ENV{'user.domain'}.'_'.
1375: time.'_'.rand(1000000000).'.csv';
1376: unless ($outputfile = Apache::File->new('>/home/httpd'.$filename)) {
1377: $r->log_error("Couldn't open $filename for output $!");
1378: $r->print("Problems occured in writing the csv file. ".
1379: "This error has been logged. ".
1380: "Please alert your LON-CAPA administrator.");
1381: $outputfile = undef;
1382: }
1.38 matthew 1383: #
1384: # Datestamp
1385: my $description = $ENV{'course.'.$ENV{'request.course.id'}.'.description'};
1386: print $outputfile '"'.&Apache::loncommon::csv_translate($description).'",'.
1387: '"'.&Apache::loncommon::csv_translate(scalar(localtime(time))).'"'.
1388: "\n";
1.37 matthew 1389: #
1390: # Print out the headings
1.87 matthew 1391: my $sequence_row = '';
1392: my $resource_row = undef;
1.37 matthew 1393: foreach my $field (&get_student_fields_to_show()) {
1.87 matthew 1394: $sequence_row .='"",';
1395: $resource_row .= '"'.&Apache::loncommon::csv_translate($field).'",';
1.37 matthew 1396: }
1.40 matthew 1397: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
1.87 matthew 1398: $sequence_row .= '"'.
1399: &Apache::loncommon::csv_translate($seq->{'title'}).'",';
1400: my $count = 0;
1401: if ($chosen_output->{'every_problem'}) {
1.53 matthew 1402: foreach my $res (@{$seq->{'contents'}}) {
1.87 matthew 1403: if ($res->{'type'} ne 'assessment' ||
1404: ! exists($res->{'parts'}) ||
1405: ref($res->{'parts'}) ne 'ARRAY' ||
1406: scalar(@{$res->{'parts'}}) < 1) {
1407: next;
1408: }
1.53 matthew 1409: foreach my $part (@{$res->{'parts'}}) {
1.87 matthew 1410: $resource_row .= '"'.
1411: &Apache::loncommon::csv_translate($res->{'title'}.
1412: ', Part '.$part
1413: ).'",';
1414: $count++;
1.53 matthew 1415: }
1416: }
1.37 matthew 1417: }
1.87 matthew 1418: $sequence_row.='"",'x$count;
1419: if ($chosen_output->{'sequence_sum'}) {
1420: if($chosen_output->{'correct'}) {
1421: $resource_row .= '"sum",';
1422: } else {
1423: $resource_row .= '"score",';
1424: }
1425: }
1426: if ($chosen_output->{'sequence_max'}) {
1427: $sequence_row.= '"",';
1428: $resource_row .= '"maximum possible",';
1429: }
1.37 matthew 1430: }
1.87 matthew 1431: if ($chosen_output->{'grand_total'}) {
1432: $sequence_row.= '"",';
1433: $resource_row.= '"Total",';
1434: }
1435: chomp($sequence_row);
1436: chomp($resource_row);
1437: print $outputfile $sequence_row."\n";
1438: print $outputfile $resource_row."\n";
1.31 matthew 1439: return;
1440: }
1441:
1442: sub csv_outputstudent {
1443: my ($r,$student) = @_;
1.54 matthew 1444: return if ($request_aborted);
1.37 matthew 1445: return if (! defined($outputfile));
1446: my $Str = '';
1447: #
1448: # Output student fields
1449: my @to_show = &get_student_fields_to_show();
1450: foreach my $field (@to_show) {
1451: $Str .= '"'.&Apache::loncommon::csv_translate($student->{$field}).'",';
1452: }
1453: #
1454: # Get student assessment data
1455: my %StudentsData;
1456: my @tmp = &Apache::loncoursedata::get_current_state($student->{'username'},
1457: $student->{'domain'},
1458: undef,
1459: $ENV{'request.course.id'});
1460: if ((scalar @tmp > 0) && ($tmp[0] !~ /^error:/)) {
1461: %StudentsData = @tmp;
1462: }
1463: #
1464: # Output performance data
1.87 matthew 1465: my $total = 0;
1.40 matthew 1466: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
1.54 matthew 1467: my ($performance,$performance_length,$score,$seq_max,$rawdata);
1.87 matthew 1468: if ($chosen_output->{'tries'}){
1.54 matthew 1469: ($performance,$performance_length,$score,$seq_max,$rawdata) =
1470: &StudentTriesOnSequence($student,\%StudentsData,
1471: $seq,'no');
1472: } else {
1473: ($performance,$performance_length,$score,$seq_max,$rawdata) =
1474: &StudentPerformanceOnSequence($student,\%StudentsData,
1475: $seq,'no');
1476: }
1.87 matthew 1477: if ($chosen_output->{'every_problem'}) {
1478: if ($chosen_output->{'correct'}) {
1479: $score = 0;
1480: # Deal with number of parts correct data
1481: $Str .= '"'.join('","',( map { if ($_>0) {
1482: $score += 1;
1483: 1;
1484: } else {
1485: 0;
1486: }
1487: } @$rawdata)).'",';
1488: } else {
1489: $Str .= '"'.join('","',(@$rawdata)).'",';
1490: }
1491: }
1492: if ($chosen_output->{'sequence_sum'}) {
1.37 matthew 1493: $Str .= '"'.$score.'",';
1.87 matthew 1494: }
1495: if ($chosen_output->{'sequence_max'}) {
1496: $Str .= '"'.$seq_max.'",';
1.37 matthew 1497: }
1.87 matthew 1498: $total+=$score;
1499: }
1500: if ($chosen_output->{'grand_total'}) {
1501: $Str .= '"'.$total.'",';
1.37 matthew 1502: }
1503: chop($Str);
1504: $Str .= "\n";
1505: print $outputfile $Str;
1506: #
1507: # Update the progress window
1508: &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,'last student');
1509: return;
1.31 matthew 1510: }
1511:
1512: sub csv_finish {
1513: my ($r) = @_;
1.54 matthew 1514: return if ($request_aborted);
1.37 matthew 1515: return if (! defined($outputfile));
1516: close($outputfile);
1517: #
1518: my $c = $r->connection();
1519: return if ($c->aborted());
1520: #
1521: # Close the progress window
1522: &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
1523: #
1524: # Tell the user where to get their csv file
1525: $r->print('<br />'.
1526: '<a href="'.$filename.'">Your csv file.</a>'."\n");
1527: $r->rflush();
1528: return;
1529:
1.31 matthew 1530: }
1.2 stredwic 1531:
1532: }
1533:
1.28 matthew 1534: #######################################################
1535: #######################################################
1536:
1.2 stredwic 1537: =pod
1538:
1.54 matthew 1539: =item &StudentTriesOnSequence()
1.2 stredwic 1540:
1.30 matthew 1541: Inputs:
1.2 stredwic 1542:
1543: =over 4
1544:
1.30 matthew 1545: =item $student
1.28 matthew 1546:
1.30 matthew 1547: =item $studentdata Hash ref to all student data
1.2 stredwic 1548:
1.30 matthew 1549: =item $seq Hash ref, the sequence we are working on
1.2 stredwic 1550:
1.30 matthew 1551: =item $links if defined we will output links to each resource.
1.2 stredwic 1552:
1.28 matthew 1553: =back
1.2 stredwic 1554:
1555: =cut
1.1 stredwic 1556:
1.28 matthew 1557: #######################################################
1558: #######################################################
1.54 matthew 1559: sub StudentTriesOnSequence {
1.32 matthew 1560: my ($student,$studentdata,$seq,$links) = @_;
1.31 matthew 1561: $links = 'no' if (! defined($links));
1.1 stredwic 1562: my $Str = '';
1.30 matthew 1563: my ($sum,$max) = (0,0);
1.51 matthew 1564: my $performance_length = 0;
1.54 matthew 1565: my @TriesData = ();
1566: my $tries;
1.30 matthew 1567: foreach my $resource (@{$seq->{'contents'}}) {
1568: next if ($resource->{'type'} ne 'assessment');
1569: my $resource_data = $studentdata->{$resource->{'symb'}};
1570: my $value = '';
1571: foreach my $partnum (@{$resource->{'parts'}}) {
1.54 matthew 1572: $tries = undef;
1.30 matthew 1573: $max++;
1.51 matthew 1574: $performance_length++;
1.30 matthew 1575: my $symbol = ' '; # default to space
1576: #
1.78 matthew 1577: my $awarded = 0;
1578: if (exists($resource_data->{'resource.'.$partnum.'.awarded'})) {
1579: $awarded = $resource_data->{'resource.'.$partnum.'.awarded'};
1580: $awarded = 0 if (! $awarded);
1581: }
1582: #
1583: my $status = '';
1.30 matthew 1584: if (exists($resource_data->{'resource.'.$partnum.'.solved'})) {
1.78 matthew 1585: $status = $resource_data->{'resource.'.$partnum.'.solved'};
1586: }
1587: #
1588: my $tries = 0;
1589: if(exists($resource_data->{'resource.'.$partnum.'.tries'})) {
1590: $tries = $resource_data->{'resource.'.$partnum.'.tries'};
1591: }
1592: #
1593: if ($awarded > 0) {
1594: # The student has gotten the problem correct to some degree
1595: if ($status eq 'excused') {
1596: $symbol = 'x';
1597: $max--;
1598: } elsif ($status eq 'correct_by_override') {
1.30 matthew 1599: $symbol = '+';
1600: $sum++;
1.78 matthew 1601: } elsif ($tries > 0) {
1.54 matthew 1602: if ($tries > 9) {
1.30 matthew 1603: $symbol = '*';
1.78 matthew 1604: } else {
1.54 matthew 1605: $symbol = $tries;
1.30 matthew 1606: }
1607: $sum++;
1608: } else {
1.78 matthew 1609: $symbol = '+';
1610: $sum++;
1.2 stredwic 1611: }
1.30 matthew 1612: } else {
1.78 matthew 1613: # The student has the problem incorrect or it is ungraded
1614: if ($status eq 'excused') {
1615: $symbol = 'x';
1616: $max--;
1617: } elsif ($status eq 'incorrect_by_override') {
1618: $symbol = '-';
1619: } elsif ($status eq 'ungraded_attempted') {
1620: $symbol = '#';
1621: } elsif ($status eq 'incorrect_attempted' ||
1622: $tries > 0) {
1.30 matthew 1623: $symbol = '.';
1624: } else {
1.78 matthew 1625: # Problem is wrong and has not been attempted.
1626: $symbol=' ';
1.18 matthew 1627: }
1.2 stredwic 1628: }
1.54 matthew 1629: #
1630: if (! defined($tries)) {
1631: $tries = $symbol;
1632: }
1633: push (@TriesData,$tries);
1.30 matthew 1634: #
1.47 matthew 1635: if ( ($links eq 'yes' && $symbol ne ' ') ||
1636: ($links eq 'all')) {
1.49 matthew 1637: if (length($symbol) > 1) {
1638: &Apache::lonnet::logthis('length of symbol "'.$symbol.'" > 1');
1639: }
1.30 matthew 1640: $symbol = '<a href="/adm/grades'.
1641: '?symb='.&Apache::lonnet::escape($resource->{'symb'}).
1642: '&student='.$student->{'username'}.
1.64 albertel 1643: '&userdom='.$student->{'domain'}.
1.30 matthew 1644: '&command=submission">'.$symbol.'</a>';
1645: }
1646: $value .= $symbol;
1.2 stredwic 1647: }
1.30 matthew 1648: $Str .= $value;
1.17 minaeibi 1649: }
1.51 matthew 1650: if ($seq->{'randompick'}) {
1651: $max = $seq->{'randompick'};
1652: }
1.54 matthew 1653: return ($Str,$performance_length,$sum,$max,\@TriesData);
1654: }
1655:
1656: #######################################################
1657: #######################################################
1658:
1659: =pod
1660:
1661: =item &StudentPerformanceOnSequence()
1662:
1663: Inputs:
1664:
1665: =over 4
1666:
1667: =item $student
1668:
1669: =item $studentdata Hash ref to all student data
1670:
1671: =item $seq Hash ref, the sequence we are working on
1672:
1673: =item $links if defined we will output links to each resource.
1674:
1675: =back
1676:
1677: =cut
1678:
1679: #######################################################
1680: #######################################################
1681: sub StudentPerformanceOnSequence {
1682: my ($student,$studentdata,$seq,$links) = @_;
1683: $links = 'no' if (! defined($links));
1684: my $Str = ''; # final result string
1685: my ($score,$max) = (0,0);
1686: my $performance_length = 0;
1687: my $symbol;
1688: my @ScoreData = ();
1689: my $partscore;
1690: foreach my $resource (@{$seq->{'contents'}}) {
1691: next if ($resource->{'type'} ne 'assessment');
1692: my $resource_data = $studentdata->{$resource->{'symb'}};
1693: foreach my $part (@{$resource->{'parts'}}) {
1694: $partscore = undef;
1695: my $weight = &Apache::lonnet::EXT('resource.'.$part.'.weight',
1696: $resource->{'symb'},
1697: $student->{'domain'},
1698: $student->{'username'},
1699: $student->{'section'});
1700: if (!defined($weight) || ($weight eq '')) {
1701: $weight=1;
1702: }
1703: #
1704: $max += $weight; # see the 'excused' branch below...
1705: $performance_length++; # one character per part
1706: $symbol = ' '; # default to space
1707: #
1708: my $awarded = 0;
1709: if (exists($resource_data->{'resource.'.$part.'.awarded'})) {
1710: $awarded = $resource_data->{'resource.'.$part.'.awarded'};
1.67 matthew 1711: $awarded = 0 if (! $awarded);
1.54 matthew 1712: }
1713: #
1714: $partscore = $weight*$awarded;
1715: $score += $partscore;
1.63 matthew 1716: $symbol = $partscore;
1.70 matthew 1717: if (abs($symbol - sprintf("%.0f",$symbol)) < 0.001) {
1718: $symbol = sprintf("%.0f",$symbol);
1719: }
1.54 matthew 1720: if (length($symbol) > 1) {
1721: $symbol = '*';
1722: }
1723: if (exists($resource_data->{'resource.'.$part.'.solved'})) {
1724: my $status = $resource_data->{'resource.'.$part.'.solved'};
1725: if ($status eq 'excused') {
1726: $symbol = 'x';
1727: $max -= $weight; # Do not count 'excused' problems.
1728: }
1729: } else {
1730: # Unsolved. Did they try?
1731: if (exists($resource_data->{'resource.'.$part.'.tries'})){
1732: $symbol = '.';
1733: } else {
1734: $symbol = ' ';
1735: }
1736: }
1737: #
1.60 matthew 1738: if (! defined($partscore)) {
1739: $partscore = $symbol;
1740: }
1741: push (@ScoreData,$partscore);
1742: #
1.54 matthew 1743: if ( ($links eq 'yes' && $symbol ne ' ') || ($links eq 'all')) {
1744: $symbol = '<a href="/adm/grades'.
1745: '?symb='.&Apache::lonnet::escape($resource->{'symb'}).
1746: '&student='.$student->{'username'}.
1.64 albertel 1747: '&userdom='.$student->{'domain'}.
1.54 matthew 1748: '&command=submission">'.$symbol.'</a>';
1749: }
1.60 matthew 1750: $Str .= $symbol;
1.54 matthew 1751: }
1752: }
1753: return ($Str,$performance_length,$score,$max,\@ScoreData);
1.1 stredwic 1754: }
1.23 minaeibi 1755:
1.28 matthew 1756: #######################################################
1757: #######################################################
1.23 minaeibi 1758:
1.2 stredwic 1759: =pod
1760:
1761: =item &CreateLegend()
1762:
1763: This function returns a formatted string containing the legend for the
1764: chart. The legend describes the symbols used to represent grades for
1765: problems.
1766:
1767: =cut
1768:
1.28 matthew 1769: #######################################################
1770: #######################################################
1.2 stredwic 1771: sub CreateLegend {
1772: my $Str = "<p><pre>".
1.13 minaeibi 1773: " 1 correct by student in 1 try\n".
1774: " 7 correct by student in 7 tries\n".
1.12 minaeibi 1775: " * correct by student in more than 9 tries\n".
1.20 minaeibi 1776: " + correct by hand grading or override\n".
1.12 minaeibi 1777: " - incorrect by override\n".
1778: " . incorrect attempted\n".
1779: " # ungraded attempted\n".
1.13 minaeibi 1780: " not attempted (blank field)\n".
1.12 minaeibi 1781: " x excused".
1.17 minaeibi 1782: "</pre><p>";
1.2 stredwic 1783: return $Str;
1784: }
1785:
1.28 matthew 1786: #######################################################
1787: #######################################################
1788:
1.30 matthew 1789: =pod
1.2 stredwic 1790:
1791: =back
1792:
1793: =cut
1794:
1.28 matthew 1795: #######################################################
1796: #######################################################
1.2 stredwic 1797:
1.28 matthew 1798: 1;
1.2 stredwic 1799:
1.1 stredwic 1800: __END__
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