1: # The LearningOnline Network with CAPA
2: #
3: # $Id: lonstudentassessment.pm,v 1.132 2006/03/05 02:00:01 bowersj2 Exp $
4: #
5: # Copyright Michigan State University Board of Trustees
6: #
7: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
8: # 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
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: #######################################################
49:
50: package Apache::lonstudentassessment;
51:
52: use strict;
53: use Apache::lonstatistics;
54: use Apache::lonhtmlcommon;
55: use Apache::loncommon();
56: use Apache::loncoursedata;
57: use Apache::lonnet; # for logging porpoises
58: use Apache::lonlocal;
59: use Apache::grades;
60: use Time::HiRes;
61: use Spreadsheet::WriteExcel;
62: use Spreadsheet::WriteExcel::Utility();
63:
64: #######################################################
65: #######################################################
66: =pod
67:
68: =item Package Variables
69:
70: =over 4
71:
72: =item $Statistics Hash ref to store student data. Indexed by symb,
73: contains hashes with keys 'score' and 'max'.
74:
75: =cut
76:
77: #######################################################
78: #######################################################
79:
80: my $Statistics;
81:
82: #######################################################
83: #######################################################
84:
85: =pod
86:
87: =item $show_links 'yes' or 'no' for linking to student performance data
88:
89: =item $output_mode 'html', 'excel', or 'csv' for output mode
90:
91: =item $show 'all', 'totals', or 'scores' determines how much data is output
92:
93: =item $single_student_mode evaluates to true if we are showing only one
94: student.
95:
96: =cut
97:
98: #######################################################
99: #######################################################
100: my $show_links;
101: my $output_mode;
102: my $chosen_output;
103: my $single_student_mode;
104:
105: #######################################################
106: #######################################################
107: # End of package variable declarations
108:
109: =pod
110:
111: =back
112:
113: =cut
114:
115: #######################################################
116: #######################################################
117:
118: =pod
119:
120: =item &BuildStudentAssessmentPage()
121:
122: Inputs:
123:
124: =over 4
125:
126: =item $r Apache Request
127:
128: =item $c Apache Connection
129:
130: =back
131:
132: =cut
133:
134: #######################################################
135: #######################################################
136: sub BuildStudentAssessmentPage {
137: my ($r,$c)=@_;
138: #
139: undef($Statistics);
140: undef($show_links);
141: undef($output_mode);
142: undef($chosen_output);
143: undef($single_student_mode);
144: #
145: my %Saveable_Parameters = ('Status' => 'scalar',
146: 'chartoutputmode' => 'scalar',
147: 'chartoutputdata' => 'scalar',
148: 'Section' => 'array',
149: 'StudentData' => 'array',
150: 'Maps' => 'array');
151: &Apache::loncommon::store_course_settings('chart',\%Saveable_Parameters);
152: &Apache::loncommon::restore_course_settings('chart',\%Saveable_Parameters);
153: #
154: &Apache::lonstatistics::PrepareClasslist();
155: #
156: $single_student_mode = 0;
157: $single_student_mode = 1 if ($env{'form.SelectedStudent'});
158: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
159: ['selectstudent']);
160: if ($env{'form.selectstudent'}) {
161: &Apache::lonstatistics::DisplayClasslist($r);
162: return;
163: }
164: #
165: # Print out the HTML headers for the interface
166: # This also parses the output mode selector
167: # This step must *always* be done.
168: $r->print(&CreateInterface());
169: $r->print('<input type="hidden" name="notfirstrun" value="true" />');
170: $r->print('<input type="hidden" name="sort" value="'.
171: $env{'form.sort'}.'" />');
172: $r->rflush();
173: #
174: if (! exists($env{'form.notfirstrun'}) && ! $single_student_mode) {
175: return;
176: }
177: $r->print('<h4>'.
178: &Apache::lonstatistics::section_and_enrollment_description().
179: '</h4>');
180: #
181: my $initialize = \&html_initialize;
182: my $output_student = \&html_outputstudent;
183: my $finish = \&html_finish;
184: #
185: if ($output_mode eq 'excel') {
186: $initialize = \&excel_initialize;
187: $output_student = \&excel_outputstudent;
188: $finish = \&excel_finish;
189: } elsif ($output_mode eq 'csv') {
190: $initialize = \&csv_initialize;
191: $output_student = \&csv_outputstudent;
192: $finish = \&csv_finish;
193: }
194: #
195: if($c->aborted()) { return ; }
196: #
197: # Determine which students we want to look at
198: my @Students;
199: if ($single_student_mode) {
200: @Students = (&Apache::lonstatistics::current_student());
201: $r->print(&next_and_previous_buttons());
202: $r->rflush();
203: } else {
204: @Students = @Apache::lonstatistics::Students;
205: }
206: #
207: # Perform generic initialization tasks
208: # Since we use lonnet::EXT to retrieve problem weights,
209: # to ensure current data we must clear the caches out.
210: # This makes sure that parameter changes at the student level
211: # are immediately reflected in the chart.
212: &Apache::lonnet::clear_EXT_cache_status();
213: #
214: # Clean out loncoursedata's package data, just to be safe.
215: &Apache::loncoursedata::clear_internal_caches();
216: #
217: # Call the initialize routine selected above
218: $initialize->($r);
219: foreach my $student (@Students) {
220: if($c->aborted()) {
221: $finish->($r);
222: return ;
223: }
224: # Call the output_student routine selected above
225: $output_student->($r,$student);
226: }
227: # Call the "finish" routine selected above
228: $finish->($r);
229: #
230: return;
231: }
232:
233: #######################################################
234: #######################################################
235: sub next_and_previous_buttons {
236: my $Str = '';
237: $Str .= '<input type="hidden" name="SelectedStudent" value="'.
238: $env{'form.SelectedStudent'}.'" />';
239: #
240: # Build the previous student link
241: my $previous = &Apache::lonstatistics::previous_student();
242: my $previousbutton = '';
243: if (defined($previous)) {
244: my $sname = $previous->{'username'}.':'.$previous->{'domain'};
245: $previousbutton .= '<input type="button" value="'.
246: 'Previous Student ('.
247: $previous->{'username'}.'@'.$previous->{'domain'}.')'.
248: '" onclick="document.Statistics.SelectedStudent.value='.
249: "'".$sname."'".';'.
250: 'document.Statistics.submit();" />';
251: } else {
252: $previousbutton .= '<input type="button" value="'.
253: 'Previous student (none)'.'" />';
254: }
255: #
256: # Build the next student link
257: my $next = &Apache::lonstatistics::next_student();
258: my $nextbutton = '';
259: if (defined($next)) {
260: my $sname = $next->{'username'}.':'.$next->{'domain'};
261: $nextbutton .= '<input type="button" value="'.
262: 'Next Student ('.
263: $next->{'username'}.'@'.$next->{'domain'}.')'.
264: '" onclick="document.Statistics.SelectedStudent.value='.
265: "'".$sname."'".';'.
266: 'document.Statistics.submit();" />';
267: } else {
268: $nextbutton .= '<input type="button" value="'.
269: 'Next student (none)'.'" />';
270: }
271: #
272: # Build the 'all students' button
273: my $all = '';
274: $all .= '<input type="button" value="All Students" '.
275: '" onclick="document.Statistics.SelectedStudent.value='.
276: "''".';'.'document.Statistics.submit();" />';
277: $Str .= $previousbutton.(' 'x5).$all.(' 'x5).$nextbutton;
278: return $Str;
279: }
280:
281: #######################################################
282: #######################################################
283:
284: sub get_student_fields_to_show {
285: my @to_show = @Apache::lonstatistics::SelectedStudentData;
286: foreach (@to_show) {
287: if ($_ eq 'all') {
288: @to_show = @Apache::lonstatistics::StudentDataOrder;
289: last;
290: }
291: }
292: return @to_show;
293: }
294:
295: #######################################################
296: #######################################################
297:
298: =pod
299:
300: =item &CreateInterface()
301:
302: Called by &BuildStudentAssessmentPage to create the top part of the
303: page which displays the chart.
304:
305: Inputs: None
306:
307: Returns: A string containing the HTML for the headers and top table for
308: the chart page.
309:
310: =cut
311:
312: #######################################################
313: #######################################################
314: sub CreateInterface {
315: my $Str = '';
316: $Str .= &Apache::lonhtmlcommon::breadcrumbs(undef,'Chart');
317: # $Str .= &CreateLegend();
318: $Str .= '<table cellspacing="5">'."\n";
319: $Str .= '<tr>';
320: $Str .= '<td align="center"><b>'.&mt('Sections').'</b></td>';
321: $Str .= '<td align="center"><b>'.&mt('Student Data</b>').'</td>';
322: $Str .= '<td align="center"><b>'.&mt('Enrollment Status').'</b></td>';
323: $Str .= '<td align="center"><b>'.&mt('Sequences and Folders').'</b></td>';
324: $Str .= '<td align="center"><b>'.&mt('Output Format').'</b>'.
325: &Apache::loncommon::help_open_topic("Chart_Output_Formats").
326: '</td>';
327: $Str .= '<td align="center"><b>'.&mt('Output Data').'</b>'.
328: &Apache::loncommon::help_open_topic("Chart_Output_Data").
329: '</td>';
330: $Str .= '</tr>'."\n";
331: #
332: $Str .= '<tr><td align="center">'."\n";
333: $Str .= &Apache::lonstatistics::SectionSelect('Section','multiple',5);
334: $Str .= '</td><td align="center">';
335: $Str .= &Apache::lonstatistics::StudentDataSelect('StudentData','multiple',
336: 5,undef);
337: $Str .= '</td><td>'."\n";
338: $Str .= &Apache::lonhtmlcommon::StatusOptions(undef,undef,5);
339: $Str .= '</td><td>'."\n";
340: $Str .= &Apache::lonstatistics::map_select('Maps','multiple,all',5);
341: $Str .= '</td><td>'."\n";
342: $Str .= &CreateAndParseOutputSelector();
343: $Str .= '</td><td>'."\n";
344: $Str .= &CreateAndParseOutputDataSelector();
345: $Str .= '</td></tr>'."\n";
346: $Str .= '</table>'."\n";
347: $Str .= '<input type="submit" name="Generate Chart" value="'.
348: &mt('Generate Chart').'" />';
349: $Str .= ' 'x5;
350: $Str .= '<input type="submit" name="selectstudent" value="'.
351: &mt('Select One Student').'" />';
352: $Str .= ' 'x5;
353: $Str .= '<input type="submit" name="ClearCache" value="'.
354: &mt('Clear Caches').'" />';
355: $Str .= ' 'x5;
356: $Str .=
357: &mt('Status [_1]',
358: '<input type="text" name="stats_status" size="60" value="" />');
359: $Str .= '<br />';
360: return $Str;
361: }
362:
363: #######################################################
364: #######################################################
365:
366: =pod
367:
368: =item &CreateAndParseOutputSelector()
369:
370: =cut
371:
372: #######################################################
373: #######################################################
374: my @OutputOptions =
375: ({ name => 'HTML, with links',
376: value => 'html, with links',
377: description => 'Output HTML with each symbol linked to the problem '.
378: 'which generated it.',
379: mode => 'html',
380: show_links => 'yes',
381: },
382: { name => 'HTML, with all links',
383: value => 'html, with all links',
384: description => 'Output HTML with each symbol linked to the problem '.
385: 'which generated it. '.
386: 'This includes links for unattempted problems.',
387: mode => 'html',
388: show_links => 'all',
389: },
390: { name => 'HTML, without links',
391: value => 'html, without links',
392: description => 'Output HTML. By not including links, the size of the'.
393: ' web page is greatly reduced. If your browser crashes on the '.
394: 'full display, try this.',
395: mode => 'html',
396: show_links => 'no',
397: },
398: { name => 'Excel',
399: value => 'excel',
400: description => 'Output an Excel file (compatable with Excel 95).',
401: mode => 'excel',
402: show_links => 'no',
403: },
404: { name => 'CSV',
405: value => 'csv',
406: description => 'Output a comma separated values file suitable for '.
407: 'import into a spreadsheet program. Using this method as opposed '.
408: 'to Excel output allows you to organize your data before importing'.
409: ' it into a spreadsheet program.',
410: mode => 'csv',
411: show_links => 'no',
412: },
413: );
414:
415: sub OutputDescriptions {
416: my $Str = '';
417: $Str .= "<h2>Output Formats</h2>\n";
418: $Str .= "<dl>\n";
419: foreach my $outputmode (@OutputOptions) {
420: $Str .=" <dt>".$outputmode->{'name'}."</dt>\n";
421: $Str .=" <dd>".$outputmode->{'description'}."</dd>\n";
422: }
423: $Str .= "</dl>\n";
424: return $Str;
425: }
426:
427: sub CreateAndParseOutputSelector {
428: my $Str = '';
429: my $elementname = 'chartoutputmode';
430: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
431: [$elementname]);
432: #
433: # Format for output options is 'mode, restrictions';
434: my $selected = (&Apache::loncommon::get_env_multiple('form.'.$elementname))[0];
435: $selected = 'html, without links' if (!$selected);
436:
437: #
438: # Set package variables describing output mode
439: $show_links = 'no';
440: $output_mode = 'html';
441: foreach my $option (@OutputOptions) {
442: next if ($option->{'value'} ne $selected);
443: $output_mode = $option->{'mode'};
444: $show_links = $option->{'show_links'};
445: }
446:
447: #
448: # Build the form element
449: $Str = qq/<select size="5" name="$elementname">/;
450: foreach my $option (@OutputOptions) {
451: $Str .= "\n".' <option value="'.$option->{'value'}.'"';
452: $Str .= " selected " if ($option->{'value'} eq $selected);
453: $Str .= ">".&mt($option->{'name'})."<\/option>";
454: }
455: $Str .= "\n</select>";
456: return $Str;
457: }
458:
459: ##
460: ## Data selector stuff
461: ##
462: my @OutputDataOptions =
463: (
464: { name => 'Scores Summary',
465: base => 'scores',
466: value => 'sum and total',
467: scores => 1,
468: tries => 0,
469: every_problem => 0,
470: sequence_sum => 1,
471: sequence_max => 1,
472: grand_total => 1,
473: grand_maximum => 1,
474: summary_table => 1,
475: maximum_row => 1,
476: ignore_weight => 0,
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: },
482: { name => 'Scores Per Problem',
483: base => 'scores',
484: value => 'scores',
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,
492: grand_maximum => 1,
493: summary_table => 1,
494: maximum_row => 1,
495: ignore_weight => 0,
496: shortdesc => 'Score on each Problem Part',
497: longdesc =>'The students score on each problem part, computed as'.
498: 'the part weight * part awarded',
499: },
500: { name =>'Tries',
501: base =>'tries',
502: value => 'tries',
503: scores => 0,
504: tries => 1,
505: correct => 0,
506: every_problem => 1,
507: sequence_sum => 0,
508: sequence_max => 0,
509: grand_total => 0,
510: grand_maximum => 0,
511: summary_table => 0,
512: maximum_row => 0,
513: ignore_weight => 0,
514: shortdesc => 'Number of Tries before success on each Problem Part',
515: longdesc =>'The number of tries before success on each problem part.',
516: non_html_notes => 'negative values indicate an incorrect problem',
517: },
518: { name =>'Parts Correct',
519: base =>'tries',
520: value => 'parts correct total',
521: scores => 0,
522: tries => 0,
523: correct => 1,
524: every_problem => 1,
525: sequence_sum => 1,
526: sequence_max => 1,
527: grand_total => 1,
528: grand_maximum => 1,
529: summary_table => 1,
530: maximum_row => 0,
531: ignore_weight => 1,
532: shortdesc => 'Number of Problem Parts completed successfully.',
533: longdesc => 'The Number of Problem Parts completed successfully and '.
534: 'the maximum possible for each student',
535: },
536: );
537:
538: sub HTMLifyOutputDataDescriptions {
539: my $Str = '';
540: $Str .= "<h2>Output Data</h2>\n";
541: $Str .= "<dl>\n";
542: foreach my $option (@OutputDataOptions) {
543: $Str .= ' <dt>'.$option->{'name'}.'</dt>';
544: $Str .= '<dd>'.$option->{'longdesc'}.'</dd>'."\n";
545: }
546: $Str .= "</dl>\n";
547: return $Str;
548: }
549:
550: sub CreateAndParseOutputDataSelector {
551: my $Str = '';
552: my $elementname = 'chartoutputdata';
553: #
554: my $selected = (&Apache::loncommon::get_env_multiple('form.'.$elementname))[0];
555: $selected = 'scores' if (!$selected);
556:
557: #
558: $chosen_output = $OutputDataOptions[0];
559: foreach my $option (@OutputDataOptions) {
560: if ($option->{'value'} eq $selected) {
561: $chosen_output = $option;
562: }
563: }
564: #
565: # Build the form element
566: $Str = qq/<select size="5" name="$elementname">/;
567: foreach my $option (@OutputDataOptions) {
568: $Str .= "\n".' <option value="'.$option->{'value'}.'"';
569: $Str .= " selected " if ($option->{'value'} eq $chosen_output->{'value'});
570: $Str .= ">".&mt($option->{'name'})."<\/option>";
571: }
572: $Str .= "\n</select>";
573: return $Str;
574:
575: }
576:
577: #######################################################
578: #######################################################
579: sub count_parts {
580: my ($navmap,$sequence) = @_;
581: my @resources = &get_resources($navmap,$sequence);
582: my $count = 0;
583: foreach my $res (@resources) {
584: $count += scalar(@{$res->parts});
585: }
586: return $count;
587: }
588:
589: sub get_resources {
590: my ($navmap,$sequence) = @_;
591: my @resources = $navmap->retrieveResources($sequence,
592: sub { shift->is_problem(); },
593: 0,0,0);
594: return @resources;
595: }
596:
597: #######################################################
598: #######################################################
599:
600: =pod
601:
602: =head2 HTML output routines
603:
604: =item &html_initialize($r)
605:
606: Create labels for the columns of student data to show.
607:
608: =item &html_outputstudent($r,$student)
609:
610: Return a line of the chart for a student.
611:
612: =item &html_finish($r)
613:
614: =cut
615:
616: #######################################################
617: #######################################################
618: {
619: my $padding;
620: my $count;
621:
622: my $nodata_count; # The number of students for which there is no data
623: my %prog_state; # progress state used by loncommon PrgWin routines
624: my $total_sum_width;
625:
626: my %width; # Holds sequence width information
627: my @sequences;
628: my $navmap; # Have to keep this around since weakref is a bit zealous
629:
630: sub html_cleanup {
631: undef(%prog_state);
632: undef(%width);
633: #
634: undef($navmap);
635: undef(@sequences);
636: }
637:
638: sub html_initialize {
639: my ($r) = @_;
640: #
641: $padding = ' 'x3;
642: $count = 0;
643: $nodata_count = 0;
644: &html_cleanup();
645: ($navmap,@sequences) =
646: &Apache::lonstatistics::selected_sequences_with_assessments();
647: if (! ref($navmap)) {
648: # Unable to get data, so bail out
649: $r->print("<h3>".
650: &mt('Unable to retrieve course information.').
651: '</h3>');
652: }
653: #
654: $r->print("<h3>".$env{'course.'.$env{'request.course.id'}.'.description'}.
655: " ".localtime(time)."</h3>");
656: #
657: if ($chosen_output->{'base'} !~ /^final table/) {
658: $r->print("<h3>".$chosen_output->{'shortdesc'}."</h3>");
659: }
660: my $Str = "<pre>\n";
661: # First, the @StudentData fields need to be listed
662: my @to_show = &get_student_fields_to_show();
663: foreach my $field (@to_show) {
664: my $title=$Apache::lonstatistics::StudentData{$field}->{'title'};
665: my $base =$Apache::lonstatistics::StudentData{$field}->{'base_width'};
666: my $width=$Apache::lonstatistics::StudentData{$field}->{'width'};
667: $Str .= $title.' 'x($width-$base).$padding;
668: }
669: #
670: # Compute the column widths and output the sequence titles
671: my $total_count;
672: #
673: # Compute sequence widths
674: my $starttime = Time::HiRes::time;
675: foreach my $seq (@sequences) {
676: my $symb = $seq->symb;
677: my $title = $seq->compTitle;
678: $width{$symb}->{'width_sum'} = 0;
679: # Compute width of sum
680: if ($chosen_output->{'sequence_sum'}) {
681: if ($chosen_output->{'every_problem'}) {
682: # Use 1 digit for a space
683: $width{$symb}->{'width_sum'} += 1;
684: }
685: $total_count += &count_parts($navmap,$seq);
686: # Use 3 digits for the sum
687: $width{$symb}->{'width_sum'} += 3;
688: }
689: # Compute width of maximum
690: if ($chosen_output->{'sequence_max'}) {
691: if ($width{$symb}->{'width_sum'}>0) {
692: # One digit for the '/'
693: $width{$symb}->{'width_sum'} +=1;
694: }
695: # Use 3 digits for the total
696: $width{$symb}->{'width_sum'}+=3;
697: }
698: #
699: if ($chosen_output->{'every_problem'}) {
700: # one problem per digit
701: $width{$symb}->{'width_parts'}= &count_parts($navmap,$seq);
702: $width{$symb}->{'width_problem'} += $width{$symb}->{'width_parts'};
703: } else {
704: $width{$symb}->{'width_problem'} = 0;
705: }
706: $width{$symb}->{'width_total'} = $width{$symb}->{'width_problem'} +
707: $width{$symb}->{'width_sum'};
708: if ($width{$symb}->{'width_total'} < length(&HTML::Entities::decode($title))) {
709: $width{$symb}->{'width_total'} = length(&HTML::Entities::decode($title));
710: }
711: #
712: # Output the sequence titles
713: $Str .= $title.(' 'x($width{$symb}->{'width_total'}-
714: length($title)
715: )).$padding;
716: }
717: $total_sum_width = length($total_count)+1;
718: $Str .= " total</pre>\n";
719: $Str .= "<pre>";
720: $r->print($Str);
721: $r->rflush();
722:
723: $r->print(<<JS);
724: <script>
725: // get the left offset of a given widget as an absolute position
726: function getLeftOffset (element) {
727: return collect(element, "offsetLeft");
728: }
729:
730: // get the top offset of a given widget as an absolute position
731: function getTopOffset (element) {
732: return collect(element, "offsetTop");
733: }
734:
735: function collect(element, att) {
736: var val = 0;
737: while(element) {
738: val += element[att];
739: element = element.offsetParent;
740: }
741: return val;
742: }
743:
744: var currentDiv;
745: var oldBorder;
746: var currentElement;
747: function popup_score(element, score) {
748: popdown_score();
749: var left = getLeftOffset(element);
750: var top = getTopOffset(element);
751: var div = document.createElement("div");
752: div.style.border = "1px solid #8888FF";
753: div.style.backgroundColor = "#CCCCFF";
754: div.appendChild(document.createTextNode(score));
755: div.style.position = "absolute";
756: div.style.top = (top - 25) + "px";
757: div.style.left = (left - 10) + "px";
758: currentDiv = div;
759: document.body.insertBefore(div, document.body.children[0]);
760: oldBorder = element.style.border;
761: element.style.border = "1px solid yellow";
762: currentElement = element;
763: }
764:
765: function popdown_score() {
766: if (currentDiv) {
767: document.body.removeChild(currentDiv);
768: }
769: if (currentElement) {
770: currentElement.style.border = oldBorder;
771: }
772: currentDiv = undefined;
773: }
774: </script>
775: JS
776:
777: #
778: # Let the user know what we are doing
779: my $studentcount = scalar(@Apache::lonstatistics::Students);
780: if ($env{'form.SelectedStudent'}) {
781: $studentcount = '1';
782: }
783: #
784: # Initialize progress window
785: %prog_state=&Apache::lonhtmlcommon::Create_PrgWin
786: ($r,'HTML Chart Status',
787: 'HTML Chart Progress', $studentcount,
788: 'inline',undef,'Statistics','stats_status');
789: #
790: &Apache::lonhtmlcommon::Update_PrgWin($r,\%prog_state,
791: 'Processing first student');
792: return;
793: }
794:
795: sub html_outputstudent {
796: my ($r,$student) = @_;
797: my $Str = '';
798: return if (! defined($navmap));
799: #
800: if($count++ % 5 == 0 && $count > 0) {
801: $r->print("</pre><pre>");
802: }
803: # First, the @StudentData fields need to be listed
804: my @to_show = &get_student_fields_to_show();
805: foreach my $field (@to_show) {
806: my $title=$student->{$field};
807: # Deal with 'comments' - how I love special cases
808: if ($field eq 'comments') {
809: $title = '<a href="/adm/'.$student->{'domain'}.'/'.$student->{'username'}.'/'.'aboutme#coursecomment">'.&mt('Comments').'</a>';
810: }
811: my $base = length($title);
812: my $width=$Apache::lonstatistics::StudentData{$field}->{'width'};
813: $Str .= $title.' 'x($width-$base).$padding;
814: }
815: # Get ALL the students data
816: my %StudentsData;
817: my @tmp = &Apache::loncoursedata::get_current_state
818: ($student->{'username'},$student->{'domain'},undef,
819: $env{'request.course.id'});
820: if ((scalar @tmp > 0) && ($tmp[0] !~ /^error:/)) {
821: %StudentsData = @tmp;
822: }
823: if (scalar(@tmp) < 1) {
824: $nodata_count++;
825: $Str .= '<font color="blue">No Course Data</font>'."\n";
826: $r->print($Str);
827: $r->rflush();
828: return;
829: }
830: #
831: # By sequence build up the data
832: my $studentstats;
833: my $PerformanceStr = '';
834: foreach my $seq (@sequences) {
835: my $symb = $seq->symb;
836: my ($performance,$performance_length,$score,$seq_max,$rawdata);
837: if ($chosen_output->{'tries'}) {
838: ($performance,$performance_length,$score,$seq_max,$rawdata) =
839: &student_tries_on_sequence($student,\%StudentsData,
840: $navmap,$seq,$show_links);
841: } else {
842: ($performance,$performance_length,$score,$seq_max,$rawdata) =
843: &student_performance_on_sequence($student,\%StudentsData,
844: $navmap,$seq,$show_links,
845: $chosen_output->{ignore_weight});
846: }
847: my $ratio='';
848: if ($chosen_output->{'every_problem'} &&
849: $chosen_output->{'sequence_sum'}) {
850: $ratio .= ' ';
851: }
852: if ($chosen_output->{'sequence_sum'} && $score ne ' ') {
853: my $score .= sprintf("%3.0f",$score);
854: $ratio .= (' 'x(3-length($score))).$score;
855: } elsif($chosen_output->{'sequence_sum'}) {
856: $ratio .= ' 'x3;
857: }
858: if ($chosen_output->{'sequence_max'}) {
859: if ($chosen_output->{'sequence_sum'}) {
860: $ratio .= '/';
861: }
862: $ratio .= sprintf("%3.0f",$seq_max);
863: }
864: #
865: if (! $chosen_output->{'every_problem'}) {
866: $performance = '';
867: $performance_length=0;
868: }
869: $performance .= ' 'x($width{$symb}->{'width_total'} -
870: $performance_length -
871: $width{$symb}->{'width_sum'}).
872: $ratio;
873: #
874: $Str .= $performance.$padding;
875: #
876: $studentstats->{$symb}->{'score'}= $score;
877: $studentstats->{$symb}->{'max'} = $seq_max;
878: }
879: #
880: # Total it up and store the statistics info.
881: my ($score,$max);
882: while (my ($symb,$seq_stats) = each (%{$studentstats})) {
883: $Statistics->{$symb}->{'score'} += $seq_stats->{'score'};
884: if ($Statistics->{$symb}->{'max'} < $seq_stats->{'max'}) {
885: $Statistics->{$symb}->{'max'} = $seq_stats->{'max'};
886: }
887: if ($seq_stats->{'score'} ne ' ') {
888: $score += $seq_stats->{'score'};
889: $Statistics->{$symb}->{'num_students'}++;
890: }
891: $max += $seq_stats->{'max'};
892: }
893: if (! defined($score)) {
894: $score = ' ' x $total_sum_width;
895: } else {
896: $score = sprintf("%.0f",$score);
897: $score = (' 'x(3-length($score))).$score;
898: }
899: $Str .= ' '.' 'x($total_sum_width-length($score)).$score.' / '.$max;
900: $Str .= " \n";
901: #
902: $r->print($Str);
903: #
904: $r->rflush();
905: &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,'last student');
906: return;
907: }
908:
909: sub html_finish {
910: my ($r) = @_;
911: return if (! defined($navmap));
912: #
913: # Check for suppressed output and close the progress window if so
914: $r->print("</pre>\n");
915: if ($chosen_output->{'summary_table'}) {
916: if ($single_student_mode) {
917: $r->print(&SingleStudentTotal());
918: } else {
919: $r->print(&StudentAverageTotal());
920: }
921: }
922: $r->rflush();
923: &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
924: &html_cleanup();
925: return;
926: }
927:
928: sub StudentAverageTotal {
929: my $Str = '<h3>'.&mt('Summary Tables').'</h3>'.$/;
930: $Str .= '<table border=2 cellspacing="1">'."\n";
931: $Str .= '<tr>'.
932: '<th>'.&mt('Title').'</th>'.
933: '<th>'.&mt('Average').'</th>'.
934: '<th>'.&mt('Maximum').'</th>'.
935: '</tr>'.$/;
936: foreach my $seq (@sequences) {
937: my $symb = $seq->symb;
938: my $ave;
939: my $num_students = $Statistics->{$symb}->{'num_students'};
940: if ($num_students > 0) {
941: $ave = int(100*
942: ($Statistics->{$symb}->{'score'}/$num_students)
943: )/100;
944: } else {
945: $ave = 0;
946: }
947: my $max = $Statistics->{$symb}->{'max'};
948: $ave = sprintf("%.2f",$ave);
949: $Str .= '<tr><td>'.$seq->compTitle.'</td>'.
950: '<td align="right">'.$ave.' </td>'.
951: '<td align="right">'.$max.' '.'</td></tr>'."\n";
952: }
953: $Str .= "</table>\n";
954: return $Str;
955: }
956:
957: sub SingleStudentTotal {
958: return if (! defined($navmap));
959: my $student = &Apache::lonstatistics::current_student();
960: my $Str = '<h3>'.&mt('Summary table for [_1] ([_2]@[_3])',
961: $student->{'fullname'},
962: $student->{'username'},$student->{'domain'}).'</h3>';
963: $Str .= $/;
964: $Str .= '<table border=2 cellspacing="1">'."\n";
965: $Str .=
966: '<tr>'.
967: '<th>'.&mt('Sequence or Folder').'</th>';
968: if ($chosen_output->{'base'} eq 'tries') {
969: $Str .= '<th>'.&mt('Parts Correct').'</th>';
970: } else {
971: $Str .= '<th>'.&mt('Score').'</th>';
972: }
973: $Str .= '<th>'.&mt('Maximum').'</th>'."</tr>\n";
974: my $total = 0;
975: my $total_max = 0;
976: foreach my $seq (@sequences) {
977: my $value = $Statistics->{$seq->symb}->{'score'};
978: my $max = $Statistics->{$seq->symb}->{'max'};
979: $Str .= '<tr><td>'.&HTML::Entities::encode($seq->compTitle).'</td>'.
980: '<td align="right">'.$value.'</td>'.
981: '<td align="right">'.$max.'</td></tr>'."\n";
982: $total += $value;
983: $total_max +=$max;
984: }
985: $Str .= '<tr><td><b>'.&mt('Total').'</b></td>'.
986: '<td align="right">'.$total.'</td>'.
987: '<td align="right">'.$total_max."</td></tr>\n";
988: $Str .= "</table>\n";
989: return $Str;
990: }
991:
992: }
993:
994: #######################################################
995: #######################################################
996:
997: =pod
998:
999: =head2 EXCEL subroutines
1000:
1001: =item &excel_initialize($r)
1002:
1003: =item &excel_outputstudent($r,$student)
1004:
1005: =item &excel_finish($r)
1006:
1007: =cut
1008:
1009: #######################################################
1010: #######################################################
1011: {
1012:
1013: my $excel_sheet;
1014: my $excel_workbook;
1015: my $format;
1016:
1017: my $filename;
1018: my $rows_output;
1019: my $cols_output;
1020:
1021: my %prog_state; # progress window state
1022: my $request_aborted;
1023:
1024: my $total_formula;
1025: my $maximum_formula;
1026: my %formula_data;
1027:
1028: my $navmap;
1029: my @sequences;
1030:
1031: sub excel_cleanup {
1032: #
1033: undef ($excel_sheet);
1034: undef ($excel_workbook);
1035: undef ($filename);
1036: undef ($rows_output);
1037: undef ($cols_output);
1038: undef (%prog_state);
1039: undef ($request_aborted);
1040: undef ($total_formula);
1041: undef ($maximum_formula);
1042: #
1043: undef(%formula_data);
1044: #
1045: undef($navmap);
1046: undef(@sequences);
1047: }
1048:
1049: sub excel_initialize {
1050: my ($r) = @_;
1051:
1052: &excel_cleanup();
1053: ($navmap,@sequences) =
1054: &Apache::lonstatistics::selected_sequences_with_assessments();
1055: if (! ref($navmap)) {
1056: # Unable to get data, so bail out
1057: $r->print("<h3>".
1058: &mt('Unable to retrieve course information.').
1059: '</h3>');
1060: }
1061: #
1062: my $total_columns = scalar(&get_student_fields_to_show());
1063: my $num_students = scalar(@Apache::lonstatistics::Students);
1064: #
1065: foreach my $seq (@sequences) {
1066: if ($chosen_output->{'every_problem'}) {
1067: $total_columns+=&count_parts($navmap,$seq);
1068: }
1069: # Add 2 because we need a 'sequence_sum' and 'total' column for each
1070: $total_columns += 2;
1071: }
1072: my $too_many_cols_error_message =
1073: '<h2>'.&mt('Unable to Complete Request').'</h2>'.$/.
1074: '<p>'.&mt('LON-CAPA is unable to produce your Excel spreadsheet because your selections will result in more than 255 columns. Excel allows only 255 columns in a spreadsheet.').'</p>'.$/.
1075: '<p>'.&mt('You may consider reducing the number of <b>Sequences or Folders</b> you have selected.').'</p>'.$/.
1076: '<p>'.&mt('LON-CAPA can produce <b>CSV</b> files of this data or Excel files of the <b>Scores Summary</b> data.').'</p>'.$/;
1077: if ($chosen_output->{'base'} eq 'tries' && $total_columns > 255) {
1078: $r->print($too_many_cols_error_message);
1079: $request_aborted = 1;
1080: }
1081: if ($chosen_output->{'base'} eq 'scores' && $total_columns > 255) {
1082: $r->print($too_many_cols_error_message);
1083: $request_aborted = 1;
1084: }
1085: return if ($request_aborted);
1086: #
1087: #
1088: $excel_workbook = undef;
1089: $excel_sheet = undef;
1090: #
1091: $rows_output = 0;
1092: $cols_output = 0;
1093: #
1094: # Determine rows
1095: my $header_row = $rows_output++;
1096: my $description_row = $rows_output++;
1097: my $notes_row = $rows_output++;
1098: $rows_output++; # blank row
1099: my $summary_header_row;
1100: if ($chosen_output->{'summary_table'}) {
1101: $summary_header_row = $rows_output++;
1102: $rows_output+= scalar(@sequences);
1103: $rows_output++;
1104: }
1105: my $sequence_name_row = $rows_output++;
1106: my $resource_name_row = $rows_output++;
1107: my $maximum_data_row = $rows_output++;
1108: if (! $chosen_output->{'maximum_row'}) {
1109: $rows_output--;
1110: }
1111: my $first_data_row = $rows_output++;
1112: #
1113: # Create sheet
1114: ($excel_workbook,$filename,$format)=
1115: &Apache::loncommon::create_workbook($r);
1116: return if (! defined($excel_workbook));
1117: #
1118: # Add a worksheet
1119: my $sheetname = $env{'course.'.$env{'request.course.id'}.'.description'};
1120: $sheetname = &Apache::loncommon::clean_excel_name($sheetname);
1121: $excel_sheet = $excel_workbook->addworksheet($sheetname);
1122: #
1123: # Put the course description in the header
1124: $excel_sheet->write($header_row,$cols_output++,
1125: $env{'course.'.$env{'request.course.id'}.'.description'},
1126: $format->{'h1'});
1127: $cols_output += 3;
1128: #
1129: # Put a description of the sections listed
1130: my $sectionstring = '';
1131: my @Sections = &Apache::lonstatistics::get_selected_sections();
1132: $excel_sheet->write($header_row,$cols_output++,
1133: &Apache::lonstatistics::section_and_enrollment_description('plaintext'),
1134: $format->{'h3'});
1135: #
1136: # Put the date in there too
1137: $excel_sheet->write($header_row,$cols_output++,
1138: 'Compiled on '.localtime(time),$format->{'h3'});
1139: #
1140: $cols_output = 0;
1141: $excel_sheet->write($description_row,$cols_output++,
1142: $chosen_output->{'shortdesc'},
1143: $format->{'b'});
1144: #
1145: $cols_output = 0;
1146: $excel_sheet->write($notes_row,$cols_output++,
1147: $chosen_output->{'non_html_notes'},
1148: $format->{'i'});
1149:
1150: ##############################################
1151: # Output headings for the raw data
1152: ##############################################
1153: #
1154: # Add the student headers
1155: $cols_output = 0;
1156: foreach my $field (&get_student_fields_to_show()) {
1157: $excel_sheet->write($resource_name_row,$cols_output++,$field,
1158: $format->{'bold'});
1159: }
1160: #
1161: # Add the remaining column headers
1162: my $total_formula_string = '=0';
1163: my $maximum_formula_string = '=0';
1164: foreach my $seq (@sequences) {
1165: my $symb = $seq->symb;
1166: $excel_sheet->write($sequence_name_row,,
1167: $cols_output,$seq->compTitle,$format->{'bold'});
1168: # Determine starting cell
1169: $formula_data{$symb}->{'Excel:startcell'}=
1170: &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell
1171: ($first_data_row,$cols_output);
1172: $formula_data{$symb}->{'Excel:startcol'}=$cols_output;
1173: my $count = 0;
1174: if ($chosen_output->{'every_problem'}) {
1175: # Put the names of the problems and parts into the sheet
1176: foreach my $res (&get_resources($navmap,$seq)) {
1177: if (scalar(@{$res->parts}) > 1) {
1178: foreach my $part (@{$res->parts}) {
1179: $excel_sheet->write($resource_name_row,
1180: $cols_output++,
1181: $res->compTitle.' part '.$res->part_display($part),
1182: $format->{'bold'});
1183: $count++;
1184: }
1185: } else {
1186: $excel_sheet->write($resource_name_row,
1187: $cols_output++,
1188: $res->compTitle,$format->{'bold'});
1189: $count++;
1190: }
1191: }
1192: }
1193: # Determine ending cell
1194: if ($count <= 1) {
1195: $formula_data{$symb}->{'Excel:endcell'} = $formula_data{$symb}->{'Excel:startcell'};
1196: $formula_data{$symb}->{'Excel:endcol'} = $formula_data{$symb}->{'Excel:startcol'};
1197: } else {
1198: $formula_data{$symb}->{'Excel:endcell'} =
1199: &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell
1200: ($first_data_row,$cols_output-1);
1201: $formula_data{$symb}->{'Excel:endcol'} = $cols_output-1;
1202: }
1203: # Create the formula for summing up this sequence
1204: if (! exists($formula_data{$symb}->{'Excel:endcell'}) ||
1205: ! defined($formula_data{$symb}->{'Excel:endcell'})) {
1206: $formula_data{$symb}->{'Excel:endcell'} = $formula_data{$symb}->{'Excel:startcell'};
1207: }
1208:
1209: my $start = $formula_data{$symb}->{'Excel:startcell'};
1210: my $end = $formula_data{$symb}->{'Excel:endcell'};
1211: $formula_data{$symb}->{'Excel:sum'}= $excel_sheet->store_formula
1212: ("=IF(COUNT($start\:$end),SUM($start\:$end),\"\")");
1213: # Determine cell the score is held in
1214: $formula_data{$symb}->{'Excel:scorecell'} =
1215: &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell
1216: ($first_data_row,$cols_output);
1217: $formula_data{$symb}->{'Excel:scorecol'}=$cols_output;
1218: if ($chosen_output->{'base'} eq 'parts correct total') {
1219: $excel_sheet->write($resource_name_row,$cols_output++,
1220: 'parts correct',
1221: $format->{'bold'});
1222: } elsif ($chosen_output->{'sequence_sum'}) {
1223: if ($chosen_output->{'correct'}) {
1224: # Only reporting the number correct, so do not call it score
1225: $excel_sheet->write($resource_name_row,$cols_output++,
1226: 'sum',
1227: $format->{'bold'});
1228: } else {
1229: $excel_sheet->write($resource_name_row,$cols_output++,
1230: 'score',
1231: $format->{'bold'});
1232: }
1233: }
1234: #
1235: $total_formula_string.='+'.
1236: &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell
1237: ($first_data_row,$cols_output-1);
1238: if ($chosen_output->{'sequence_max'}) {
1239: $excel_sheet->write($resource_name_row,$cols_output,
1240: 'maximum',
1241: $format->{'bold'});
1242: $formula_data{$symb}->{'Excel:maxcell'} =
1243: &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell
1244: ($first_data_row,$cols_output);
1245: $formula_data{$symb}->{'Excel:maxcol'}=$cols_output;
1246: $maximum_formula_string.='+'.
1247: &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell
1248: ($first_data_row,$cols_output);
1249: $cols_output++;
1250:
1251: }
1252: }
1253: if ($chosen_output->{'grand_total'}) {
1254: $excel_sheet->write($resource_name_row,$cols_output++,'Total',
1255: $format->{'bold'});
1256: }
1257: if ($chosen_output->{'grand_maximum'}) {
1258: $excel_sheet->write($resource_name_row,$cols_output++,'Max. Total',
1259: $format->{'bold'});
1260: }
1261: $total_formula = $excel_sheet->store_formula($total_formula_string);
1262: $maximum_formula = $excel_sheet->store_formula($maximum_formula_string);
1263: ##############################################
1264: # Output a row for MAX, if appropriate
1265: ##############################################
1266: if ($chosen_output->{'maximum_row'}) {
1267: $cols_output = 0;
1268: foreach my $field (&get_student_fields_to_show()) {
1269: if ($field eq 'username' || $field eq 'fullname' ||
1270: $field eq 'id') {
1271: $excel_sheet->write($maximum_data_row,$cols_output++,'Maximum',
1272: $format->{'bold'});
1273: } else {
1274: $excel_sheet->write($maximum_data_row,$cols_output++,'');
1275: }
1276: }
1277: #
1278: # Add the maximums for each sequence or assessment
1279: my %total_cell_translation;
1280: my %maximum_cell_translation;
1281: foreach my $seq (@sequences) {
1282: my $symb = $seq->symb;
1283: $cols_output=$formula_data{$symb}->{'Excel:startcol'};
1284: $total_cell_translation{$formula_data{$symb}->{'Excel:scorecell'}}=
1285: &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell
1286: ($maximum_data_row,$formula_data{$symb}->{'Excel:scorecol'});
1287: $maximum_cell_translation{$formula_data{$symb}->{'Excel:maxcell'}}=
1288: &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell
1289: ($maximum_data_row,$formula_data{$symb}->{'Excel:maxcol'});
1290: my $weight;
1291: my $max = 0;
1292: foreach my $resource (&get_resources($navmap,$seq)) {
1293: foreach my $part (@{$resource->parts}){
1294: $weight = 1;
1295: if ($chosen_output->{'scores'}) {
1296: $weight = &Apache::lonnet::EXT
1297: ('resource.'.$part.'.weight',$resource->symb,
1298: undef,undef,undef);
1299: if (!defined($weight) || ($weight eq '')) {
1300: $weight=1;
1301: }
1302: }
1303: if ($chosen_output->{'scores'} &&
1304: $chosen_output->{'every_problem'}) {
1305: $excel_sheet->write($maximum_data_row,$cols_output++,
1306: $weight);
1307: }
1308: $max += $weight;
1309: }
1310: }
1311: #
1312: if ($chosen_output->{'sequence_sum'} &&
1313: $chosen_output->{'every_problem'}) {
1314: my %replaceCells=
1315: ('^'.$formula_data{$symb}->{'Excel:startcell'}.':'.
1316: $formula_data{$symb}->{'Excel:endcell'}.'$' =>
1317: &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell($maximum_data_row,$formula_data{$symb}->{'Excel:startcol'}).':'.
1318: &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell($maximum_data_row,$formula_data{$symb}->{'Excel:endcol'}));
1319: $excel_sheet->repeat_formula($maximum_data_row,$cols_output++,
1320: $formula_data{$symb}->{'Excel:sum'},undef,
1321: %replaceCells, %replaceCells);
1322:
1323: } elsif ($chosen_output->{'sequence_sum'}) {
1324: $excel_sheet->write($maximum_data_row,$cols_output++,$max);
1325: }
1326: if ($chosen_output->{'sequence_max'}) {
1327: $excel_sheet->write($maximum_data_row,$cols_output++,$max);
1328: }
1329: #
1330: }
1331: if ($chosen_output->{'grand_total'}) {
1332: $excel_sheet->repeat_formula($maximum_data_row,$cols_output++,
1333: $total_formula,undef,
1334: %total_cell_translation);
1335: }
1336: if ($chosen_output->{'grand_maximum'}) {
1337: $excel_sheet->repeat_formula($maximum_data_row,$cols_output++,
1338: $maximum_formula,undef,
1339: %maximum_cell_translation);
1340: }
1341: } # End of MAXIMUM row output if ($chosen_output->{'maximum_row'}) {
1342: $rows_output = $first_data_row;
1343: ##############################################
1344: # Output summary table, which actually is above the sequence name row.
1345: ##############################################
1346: if ($chosen_output->{'summary_table'}) {
1347: $cols_output = 0;
1348: $excel_sheet->write($summary_header_row,$cols_output++,
1349: 'Summary Table',$format->{'bold'});
1350: if ($chosen_output->{'maximum_row'}) {
1351: $excel_sheet->write($summary_header_row,$cols_output++,
1352: 'Maximum',$format->{'bold'});
1353: }
1354: $excel_sheet->write($summary_header_row,$cols_output++,
1355: 'Average',$format->{'bold'});
1356: $excel_sheet->write($summary_header_row,$cols_output++,
1357: 'Median',$format->{'bold'});
1358: $excel_sheet->write($summary_header_row,$cols_output++,
1359: 'Std Dev',$format->{'bold'});
1360: my $row = $summary_header_row+1;
1361: foreach my $seq (@sequences) {
1362: my $symb = $seq->symb;
1363: $cols_output = 0;
1364: $excel_sheet->write($row,$cols_output++,
1365: $seq->compTitle,
1366: $format->{'bold'});
1367: if ($chosen_output->{'maximum_row'}) {
1368: $excel_sheet->write
1369: ($row,$cols_output++,
1370: '='.
1371: &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell
1372: ($maximum_data_row,$formula_data{$symb}->{'Excel:scorecol'})
1373: );
1374: }
1375: my $range =
1376: &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell
1377: ($first_data_row,$formula_data{$symb}->{'Excel:scorecol'}).
1378: ':'.
1379: &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell
1380: ($first_data_row+$num_students-1,$formula_data{$symb}->{'Excel:scorecol'});
1381: $excel_sheet->write($row,$cols_output++,
1382: '=AVERAGE('.$range.')');
1383: $excel_sheet->write($row,$cols_output++,
1384: '=MEDIAN('.$range.')');
1385: $excel_sheet->write($row,$cols_output++,
1386: '=STDEV('.$range.')');
1387: $row++;
1388: }
1389: }
1390: ##############################################
1391: # Take care of non-excel initialization
1392: ##############################################
1393: #
1394: # Let the user know what we are doing
1395: my $studentcount = scalar(@Apache::lonstatistics::Students);
1396: if ($env{'form.SelectedStudent'}) {
1397: $studentcount = '1';
1398: }
1399: if ($studentcount > 1) {
1400: $r->print('<h1>'.&mt('Compiling Excel spreadsheet for [_1] students',
1401: $studentcount)."</h1>\n");
1402: } else {
1403: $r->print('<h1>'.
1404: &mt('Compiling Excel spreadsheet for 1 student').
1405: "</h1>\n");
1406: }
1407: $r->rflush();
1408: #
1409: # Initialize progress window
1410: %prog_state=&Apache::lonhtmlcommon::Create_PrgWin
1411: ($r,'Excel File Compilation Status',
1412: 'Excel File Compilation Progress', $studentcount,
1413: 'inline',undef,'Statistics','stats_status');
1414: #
1415: &Apache::lonhtmlcommon::Update_PrgWin($r,\%prog_state,
1416: 'Processing first student');
1417: return;
1418: }
1419:
1420: sub excel_outputstudent {
1421: my ($r,$student) = @_;
1422: if ($request_aborted || ! defined($navmap) || ! defined($excel_sheet)) {
1423: return;
1424: }
1425: $cols_output=0;
1426: #
1427: # Write out student data
1428: my @to_show = &get_student_fields_to_show();
1429: foreach my $field (@to_show) {
1430: my $value = $student->{$field};
1431: if ($field eq 'comments') {
1432: $value = &Apache::lonmsg::retrieve_instructor_comments
1433: ($student->{'username'},$student->{'domain'});
1434: }
1435: $excel_sheet->write($rows_output,$cols_output++,$value);
1436: }
1437: #
1438: # Get student assessment data
1439: my %StudentsData;
1440: my @tmp = &Apache::loncoursedata::get_current_state($student->{'username'},
1441: $student->{'domain'},
1442: undef,
1443: $env{'request.course.id'});
1444: if ((scalar @tmp > 0) && ($tmp[0] !~ /^error:/)) {
1445: %StudentsData = @tmp;
1446: }
1447: #
1448: # Write out sequence scores and totals data
1449: my %total_cell_translation;
1450: my %maximum_cell_translation;
1451: foreach my $seq (@sequences) {
1452: my $symb = $seq->symb;
1453: $cols_output = $formula_data{$symb}->{'Excel:startcol'};
1454: # Keep track of cells to translate in total cell
1455: $total_cell_translation{$formula_data{$symb}->{'Excel:scorecell'}} =
1456: &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell
1457: ($rows_output,$formula_data{$symb}->{'Excel:scorecol'});
1458: # and maximum cell
1459: $maximum_cell_translation{$formula_data{$symb}->{'Excel:maxcell'}} =
1460: &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell
1461: ($rows_output,$formula_data{$symb}->{'Excel:maxcol'});
1462: #
1463: my ($performance,$performance_length,$score,$seq_max,$rawdata);
1464: if ($chosen_output->{'tries'} || $chosen_output->{'correct'}){
1465: ($performance,$performance_length,$score,$seq_max,$rawdata) =
1466: &student_tries_on_sequence($student,\%StudentsData,
1467: $navmap,$seq,'no');
1468: } else {
1469: ($performance,$performance_length,$score,$seq_max,$rawdata) =
1470: &student_performance_on_sequence($student,\%StudentsData,
1471: $navmap,$seq,'no',
1472: $chosen_output->{ignore_weight});
1473: }
1474: if ($chosen_output->{'every_problem'}) {
1475: if ($chosen_output->{'correct'}) {
1476: # only indiciate if each item is correct or not
1477: foreach my $value (@$rawdata) {
1478: # positive means correct, 0 or negative means
1479: # incorrect
1480: $value = $value > 0 ? 1 : 0;
1481: $excel_sheet->write($rows_output,$cols_output++,$value);
1482: }
1483: } else {
1484: foreach my $value (@$rawdata) {
1485: if ($score eq ' ' || !defined($value)) {
1486: $cols_output++;
1487: } else {
1488: $excel_sheet->write($rows_output,$cols_output++,
1489: $value);
1490: }
1491: }
1492: }
1493: }
1494: if ($chosen_output->{'sequence_sum'} &&
1495: $chosen_output->{'every_problem'}) {
1496: # Write a formula for the sum of this sequence
1497: my %replaceCells=
1498: ('^'.$formula_data{$symb}->{'Excel:startcell'}.':'.$formula_data{$symb}->{'Excel:endcell'}.'$'
1499: =>
1500: &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell($rows_output,$formula_data{$symb}->{'Excel:startcol'}).':'.
1501: &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell($rows_output,$formula_data{$symb}->{'Excel:endcol'})
1502: );
1503: # The undef is for the format
1504: $excel_sheet->repeat_formula($rows_output,$cols_output++,
1505: $formula_data{$symb}->{'Excel:sum'},undef,
1506: %replaceCells, %replaceCells);
1507: } elsif ($chosen_output->{'sequence_sum'}) {
1508: if ($score eq ' ') {
1509: $cols_output++;
1510: } else {
1511: $excel_sheet->write($rows_output,$cols_output++,$score);
1512: }
1513: }
1514: if ($chosen_output->{'sequence_max'}) {
1515: $excel_sheet->write($rows_output,$cols_output++,$seq_max);
1516: }
1517: }
1518: #
1519: if ($chosen_output->{'grand_total'}) {
1520: $excel_sheet->repeat_formula($rows_output,$cols_output++,
1521: $total_formula,undef,
1522: %total_cell_translation);
1523: }
1524: if ($chosen_output->{'grand_maximum'}) {
1525: $excel_sheet->repeat_formula($rows_output,$cols_output++,
1526: $maximum_formula,undef,
1527: %maximum_cell_translation);
1528: }
1529: #
1530: # Bookkeeping
1531: $rows_output++;
1532: $cols_output=0;
1533: #
1534: # Update the progress window
1535: &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,'last student');
1536: return;
1537: }
1538:
1539: sub excel_finish {
1540: my ($r) = @_;
1541: if ($request_aborted || ! defined($navmap) || ! defined($excel_sheet)) {
1542: &excel_cleanup();
1543: return;
1544: }
1545: #
1546: # Write the excel file
1547: $excel_workbook->close();
1548: #
1549: # Close the progress window
1550: &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
1551: #
1552: # Tell the user where to get their excel file
1553: $r->print('<br />'.
1554: '<a href="'.$filename.'">Your Excel spreadsheet.</a>'."\n");
1555: $r->rflush();
1556: &excel_cleanup();
1557: return;
1558: }
1559:
1560: }
1561: #######################################################
1562: #######################################################
1563:
1564: =pod
1565:
1566: =head2 CSV output routines
1567:
1568: =item &csv_initialize($r)
1569:
1570: =item &csv_outputstudent($r,$student)
1571:
1572: =item &csv_finish($r)
1573:
1574: =cut
1575:
1576: #######################################################
1577: #######################################################
1578: {
1579:
1580: my $outputfile;
1581: my $filename;
1582: my $request_aborted;
1583: my %prog_state; # progress window state
1584: my $navmap;
1585: my @sequences;
1586:
1587: sub csv_cleanup {
1588: undef($outputfile);
1589: undef($filename);
1590: undef($request_aborted);
1591: undef(%prog_state);
1592: #
1593: undef($navmap);
1594: undef(@sequences);
1595: }
1596:
1597: sub csv_initialize{
1598: my ($r) = @_;
1599:
1600: &csv_cleanup();
1601: ($navmap,@sequences) =
1602: &Apache::lonstatistics::selected_sequences_with_assessments();
1603: if (! ref($navmap)) {
1604: # Unable to get data, so bail out
1605: $r->print("<h3>".
1606: &mt('Unable to retrieve course information.').
1607: '</h3>');
1608: }
1609: #
1610: # Deal with unimplemented requests
1611: $request_aborted = undef;
1612: if ($chosen_output->{'base'} =~ /final table/) {
1613: $r->print(<<END);
1614: <h2>Unable to Complete Request</h2>
1615: <p>
1616: The <b>Summary Table (Scores)</b> option is not available for non-HTML output.
1617: </p>
1618: END
1619: $request_aborted = 1;
1620: }
1621: return if ($request_aborted);
1622: #
1623: # Initialize progress window
1624: my $studentcount = scalar(@Apache::lonstatistics::Students);
1625: %prog_state=&Apache::lonhtmlcommon::Create_PrgWin
1626: ($r,'CSV File Compilation Status',
1627: 'CSV File Compilation Progress', $studentcount,
1628: 'inline',undef,'Statistics','stats_status');
1629: #
1630: # Open a file
1631: ($outputfile,$filename) = &Apache::loncommon::create_text_file($r,'csv');
1632: if (! defined($outputfile)) { return ''; }
1633: #
1634: # Datestamp
1635: my $description = $env{'course.'.$env{'request.course.id'}.'.description'};
1636: print $outputfile '"'.&Apache::loncommon::csv_translate($description).'",'.
1637: '"'.&Apache::loncommon::csv_translate(scalar(localtime(time))).'"'.
1638: "\n";
1639: print $outputfile '"'.
1640: &Apache::loncommon::csv_translate
1641: (&Apache::lonstatistics::section_and_enrollment_description()).
1642: '"'."\n";
1643: foreach my $item ('shortdesc','non_html_notes') {
1644: next if (! exists($chosen_output->{$item}));
1645: print $outputfile
1646: '"'.&Apache::loncommon::csv_translate($chosen_output->{$item}).'"'.
1647: "\n";
1648: }
1649: #
1650: # Print out the headings
1651: my $sequence_row = '';
1652: my $resource_row = undef;
1653: foreach my $field (&get_student_fields_to_show()) {
1654: $sequence_row .='"",';
1655: $resource_row .= '"'.&Apache::loncommon::csv_translate($field).'",';
1656: }
1657: foreach my $seq (@sequences) {
1658: $sequence_row .= '"'.
1659: &Apache::loncommon::csv_translate($seq->compTitle).'",';
1660: my $count = 0;
1661: if ($chosen_output->{'every_problem'}) {
1662: foreach my $res (&get_resources($navmap,$seq)) {
1663: if (scalar(@{$res->parts}) < 1) {
1664: next;
1665: }
1666: foreach my $part (@{$res->parts}) {
1667: $resource_row .= '"'.
1668: &Apache::loncommon::csv_translate
1669: ($res->compTitle.', Part '.$res->part_display($part)).'",';
1670: $count++;
1671: }
1672: }
1673: }
1674: $sequence_row.='"",'x$count;
1675: if ($chosen_output->{'sequence_sum'}) {
1676: if($chosen_output->{'correct'}) {
1677: $resource_row .= '"sum",';
1678: } else {
1679: $resource_row .= '"score",';
1680: }
1681: }
1682: if ($chosen_output->{'sequence_max'}) {
1683: $sequence_row.= '"",';
1684: $resource_row .= '"maximum possible",';
1685: }
1686: }
1687: if ($chosen_output->{'grand_total'}) {
1688: $sequence_row.= '"",';
1689: $resource_row.= '"Total",';
1690: }
1691: if ($chosen_output->{'grand_maximum'}) {
1692: $sequence_row.= '"",';
1693: $resource_row.= '"Maximum",';
1694: }
1695: chomp($sequence_row);
1696: chomp($resource_row);
1697: print $outputfile $sequence_row."\n";
1698: print $outputfile $resource_row."\n";
1699: return;
1700: }
1701:
1702: sub csv_outputstudent {
1703: my ($r,$student) = @_;
1704: if ($request_aborted || ! defined($navmap) || ! defined($outputfile)) {
1705: return;
1706: }
1707: my $Str = '';
1708: #
1709: # Output student fields
1710: my @to_show = &get_student_fields_to_show();
1711: foreach my $field (@to_show) {
1712: my $value = $student->{$field};
1713: if ($field eq 'comments') {
1714: $value = &Apache::lonmsg::retrieve_instructor_comments
1715: ($student->{'username'},$student->{'domain'});
1716: }
1717: $Str .= '"'.&Apache::loncommon::csv_translate($value).'",';
1718: }
1719: #
1720: # Get student assessment data
1721: my %StudentsData;
1722: my @tmp = &Apache::loncoursedata::get_current_state($student->{'username'},
1723: $student->{'domain'},
1724: undef,
1725: $env{'request.course.id'});
1726: if ((scalar @tmp > 0) && ($tmp[0] !~ /^error:/)) {
1727: %StudentsData = @tmp;
1728: }
1729: #
1730: # Output performance data
1731: my $total = 0;
1732: my $maximum = 0;
1733: foreach my $seq (@sequences) {
1734: my ($performance,$performance_length,$score,$seq_max,$rawdata);
1735: if ($chosen_output->{'tries'}){
1736: ($performance,$performance_length,$score,$seq_max,$rawdata) =
1737: &student_tries_on_sequence($student,\%StudentsData,
1738: $navmap,$seq,'no');
1739: } else {
1740: ($performance,$performance_length,$score,$seq_max,$rawdata) =
1741: &student_performance_on_sequence($student,\%StudentsData,
1742: $navmap,$seq,'no',
1743: $chosen_output->{ignore_weight});
1744: }
1745: if ($chosen_output->{'every_problem'}) {
1746: if ($chosen_output->{'correct'}) {
1747: $score = 0;
1748: # Deal with number of parts correct data
1749: $Str .= '"'.join('","',( map { if ($_>0) {
1750: $score += 1;
1751: 1;
1752: } else {
1753: 0;
1754: }
1755: } @$rawdata)).'",';
1756: } else {
1757: $Str .= '"'.join('","',(@$rawdata)).'",';
1758: }
1759: }
1760: if ($chosen_output->{'sequence_sum'}) {
1761: $Str .= '"'.$score.'",';
1762: }
1763: if ($chosen_output->{'sequence_max'}) {
1764: $Str .= '"'.$seq_max.'",';
1765: }
1766: $total+=$score;
1767: $maximum += $seq_max;
1768: }
1769: if ($chosen_output->{'grand_total'}) {
1770: $Str .= '"'.$total.'",';
1771: }
1772: if ($chosen_output->{'grand_maximum'}) {
1773: $Str .= '"'.$maximum.'",';
1774: }
1775: chop($Str);
1776: $Str .= "\n";
1777: print $outputfile $Str;
1778: #
1779: # Update the progress window
1780: &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,'last student');
1781: return;
1782: }
1783:
1784: sub csv_finish {
1785: my ($r) = @_;
1786: if ($request_aborted || ! defined($navmap) || ! defined($outputfile)) {
1787: &csv_cleanup();
1788: return;
1789: }
1790: close($outputfile);
1791: #
1792: # Close the progress window
1793: &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
1794: #
1795: # Tell the user where to get their csv file
1796: $r->print('<br />'.
1797: '<a href="'.$filename.'">'.&mt('Your csv file.').'</a>'."\n");
1798: $r->rflush();
1799: &csv_cleanup();
1800: return;
1801:
1802: }
1803:
1804: }
1805:
1806: # This function will return an HTML string including a star, with
1807: # a mouseover popup showing the "real" value. An optional second
1808: # argument lets you show something other than a star.
1809: sub show_star {
1810: my $popup = shift;
1811: my $symbol = shift || '*';
1812: # Escape the popup for JS.
1813: $popup =~ s/([^-a-zA-Z0-9:;,._ ()|!\/?=&*])/'\\' . sprintf("%lo", ord($1))/ge;
1814:
1815: return "<span onmouseover='popup_score(this, \"$popup\");return false;' onmouseout='popdown_score();return false;' style='border: 1px solid #339933; margin: -1px;'>$symbol</span>";
1816: }
1817:
1818: #######################################################
1819: #######################################################
1820:
1821: =pod
1822:
1823: =item &StudentTriesOnSequence()
1824:
1825: Inputs:
1826:
1827: =over 4
1828:
1829: =item $student
1830:
1831: =item $studentdata Hash ref to all student data
1832:
1833: =item $seq Hash ref, the sequence we are working on
1834:
1835: =item $links if defined we will output links to each resource.
1836:
1837: =back
1838:
1839: =cut
1840:
1841: #######################################################
1842: #######################################################
1843: sub student_tries_on_sequence {
1844: my ($student,$studentdata,$navmap,$seq,$links) = @_;
1845: $links = 'no' if (! defined($links));
1846: my $Str = '';
1847: my ($sum,$max) = (0,0);
1848: my $performance_length = 0;
1849: my @TriesData = ();
1850: my $tries;
1851: my $hasdata = 0; # flag - true if the student has any data on the sequence
1852: foreach my $resource (&get_resources($navmap,$seq)) {
1853: my $resource_data = $studentdata->{$resource->symb};
1854: my $value = '';
1855: foreach my $partnum (@{$resource->parts()}) {
1856: $tries = undef;
1857: $max++;
1858: $performance_length++;
1859: my $symbol = ' '; # default to space
1860: #
1861: my $awarded = 0;
1862: if (exists($resource_data->{'resource.'.$partnum.'.awarded'})) {
1863: $awarded = $resource_data->{'resource.'.$partnum.'.awarded'};
1864: $awarded = 0 if (! $awarded);
1865: }
1866: #
1867: my $status = '';
1868: if (exists($resource_data->{'resource.'.$partnum.'.solved'})) {
1869: $status = $resource_data->{'resource.'.$partnum.'.solved'};
1870: }
1871: #
1872: my $tries = 0;
1873: if(exists($resource_data->{'resource.'.$partnum.'.tries'})) {
1874: $tries = $resource_data->{'resource.'.$partnum.'.tries'};
1875: $hasdata =1;
1876: }
1877: #
1878: if ($awarded > 0) {
1879: # The student has gotten the problem correct to some degree
1880: if ($status eq 'excused') {
1881: $symbol = 'x';
1882: $max--;
1883: } elsif ($status eq 'correct_by_override') {
1884: $symbol = '+';
1885: $sum++;
1886: } elsif ($tries > 0) {
1887: if ($tries > 9) {
1888: $symbol = show_star($tries);
1889: } else {
1890: $symbol = $tries;
1891: }
1892: $sum++;
1893: } else {
1894: $symbol = '+';
1895: $sum++;
1896: }
1897: } else {
1898: # The student has the problem incorrect or it is ungraded
1899: if ($status eq 'excused') {
1900: $symbol = 'x';
1901: $max--;
1902: } elsif ($status eq 'incorrect_by_override') {
1903: $symbol = '-';
1904: } elsif ($status eq 'ungraded_attempted') {
1905: $symbol = 'u';
1906: } elsif ($status eq 'incorrect_attempted' ||
1907: $tries > 0) {
1908: $symbol = '.';
1909: } else {
1910: # Problem is wrong and has not been attempted.
1911: $symbol=' ';
1912: }
1913: }
1914: #
1915: if (! defined($tries)) {
1916: $tries = 0;
1917: }
1918: if ($status =~ /^(incorrect|ungraded)/) {
1919: # Bug 3390: show '-' for tries on incorrect problems
1920: # (csv & excel only)
1921: push(@TriesData,-$tries);
1922: } else {
1923: push (@TriesData,$tries);
1924: }
1925: #
1926: if ( ($links eq 'yes' && $symbol ne ' ') ||
1927: ($links eq 'all')) {
1928: if (length($symbol) > 1) {
1929: &Apache::lonnet::logthis('length of symbol "'.$symbol.'" > 1');
1930: }
1931: $symbol = '<a href="/adm/grades'.
1932: '?symb='.&Apache::lonnet::escape($resource->symb).
1933: '&student='.$student->{'username'}.
1934: '&userdom='.$student->{'domain'}.
1935: '&command=submission">'.$symbol.'</a>';
1936: }
1937: $value .= $symbol;
1938: }
1939: $Str .= $value;
1940: }
1941: if ($seq->randompick()) {
1942: $max = $seq->randompick();
1943: }
1944: if (! $hasdata && $sum == 0) {
1945: $sum = ' ';
1946: }
1947: return ($Str,$performance_length,$sum,$max,\@TriesData);
1948: }
1949:
1950: #######################################################
1951: #######################################################
1952:
1953: =pod
1954:
1955: =item &student_performance_on_sequence
1956:
1957: Inputs:
1958:
1959: =over 4
1960:
1961: =item $student
1962:
1963: =item $studentdata Hash ref to all student data
1964:
1965: =item $seq Hash ref, the sequence we are working on
1966:
1967: =item $links if defined we will output links to each resource.
1968:
1969: =back
1970:
1971: =cut
1972:
1973: #######################################################
1974: #######################################################
1975: sub student_performance_on_sequence {
1976: my ($student,$studentdata,$navmap,$seq,$links,$awarded_only) = @_;
1977: $links = 'no' if (! defined($links));
1978: my $Str = ''; # final result string
1979: my ($score,$max) = (0,0);
1980: my $performance_length = 0;
1981: my $symbol;
1982: my @ScoreData = ();
1983: my $partscore;
1984: my $hasdata = 0; # flag, 0 if there were no submissions on the sequence
1985: foreach my $resource (&get_resources($navmap,$seq)) {
1986: my $symb = $resource->symb;
1987: my $resource_data = $studentdata->{$symb};
1988: foreach my $part (@{$resource->parts()}) {
1989: $partscore = undef;
1990: my $weight;
1991: if (!$awarded_only){
1992: $weight = &Apache::lonnet::EXT('resource.'.$part.'.weight',
1993: $symb,
1994: $student->{'domain'},
1995: $student->{'username'},
1996: $student->{'section'});
1997: }
1998: if (!defined($weight) || ($weight eq '')) {
1999: $weight=1;
2000: }
2001: #
2002: $max += $weight; # see the 'excused' branch below...
2003: $performance_length++; # one character per part
2004: $symbol = ' '; # default to space
2005: #
2006: my $awarded;
2007: if (exists($resource_data->{'resource.'.$part.'.awarded'})) {
2008: $awarded = $resource_data->{'resource.'.$part.'.awarded'};
2009: $awarded = 0 if (! $awarded);
2010: $hasdata = 1;
2011: }
2012: #
2013: $partscore = &Apache::grades::compute_points($weight,$awarded);
2014: if (! defined($awarded)) {
2015: $partscore = undef;
2016: }
2017: $score += $partscore;
2018: $symbol = $partscore;
2019: if (abs($symbol - sprintf("%.0f",$symbol)) < 0.001) {
2020: $symbol = sprintf("%.0f",$symbol);
2021: }
2022: if (length($symbol) > 1) {
2023: $symbol = show_star($symbol);
2024: }
2025: if (exists($resource_data->{'resource.'.$part.'.solved'}) &&
2026: $resource_data->{'resource.'.$part.'.solved'} ne '') {
2027: my $status = $resource_data->{'resource.'.$part.'.solved'};
2028: if ($status eq 'excused') {
2029: $symbol = 'x';
2030: $max -= $weight; # Do not count 'excused' problems.
2031: } elsif ($status eq 'ungraded_attempted') {
2032: $symbol = 'u';
2033: }
2034: $hasdata = 1;
2035: } elsif ($resource_data->{'resource.'.$part.'.award'} eq 'DRAFT') {
2036: $symbol = 'd';
2037: $hasdata = 1;
2038: } elsif (!exists($resource_data->{'resource.'.$part.'.awarded'})){
2039: # Unsolved. Did they try?
2040: if (exists($resource_data->{'resource.'.$part.'.tries'})){
2041: $symbol = '.';
2042: $hasdata = 1;
2043: } else {
2044: $symbol = ' ';
2045: }
2046: }
2047: #
2048: if (! defined($partscore)) {
2049: $partscore = $symbol;
2050: }
2051: push (@ScoreData,$partscore);
2052: #
2053: if ( ($links eq 'yes' && $symbol ne ' ') || ($links eq 'all')) {
2054: $symbol = '<a href="/adm/grades'.
2055: '?symb='.&Apache::lonnet::escape($symb).
2056: '&student='.$student->{'username'}.
2057: '&userdom='.$student->{'domain'}.
2058: '&command=submission">'.$symbol.'</a>';
2059: }
2060: $Str .= $symbol;
2061: }
2062: }
2063: if (! $hasdata && $score == 0) {
2064: $score = ' ';
2065: }
2066: return ($Str,$performance_length,$score,$max,\@ScoreData);
2067: }
2068:
2069: #######################################################
2070: #######################################################
2071:
2072: =pod
2073:
2074: =item &CreateLegend()
2075:
2076: This function returns a formatted string containing the legend for the
2077: chart. The legend describes the symbols used to represent grades for
2078: problems.
2079:
2080: =cut
2081:
2082: #######################################################
2083: #######################################################
2084: sub CreateLegend {
2085: my $Str = "<p><pre>".
2086: " digit score or number of tries to get correct ".
2087: " * correct by student in more than 9 tries\n".
2088: " + correct by hand grading or override\n".
2089: " - incorrect by override\n".
2090: " . incorrect attempted\n".
2091: " u ungraded attempted\n".
2092: " d draft answer saved but not submitted\n".
2093: " not attempted (blank field)\n".
2094: " x excused".
2095: "</pre><p>";
2096: return $Str;
2097: }
2098:
2099: #######################################################
2100: #######################################################
2101:
2102: =pod
2103:
2104: =back
2105:
2106: =cut
2107:
2108: #######################################################
2109: #######################################################
2110:
2111: 1;
2112:
2113: __END__
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