1: # The LearningOnline Network with CAPA
2: #
3: # $Id: lonstudentassessment.pm,v 1.57 2003/06/11 15:04:55 matthew 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::loncoursedata;
56: use Apache::lonnet; # for logging porpoises
57: use Spreadsheet::WriteExcel;
58:
59: #######################################################
60: #######################################################
61: =pod
62:
63: =item Package Variables
64:
65: =over 4
66:
67: =item $Statistics Hash ref to store student data. Indexed by symb,
68: contains hashes with keys 'score' and 'max'.
69:
70: =cut
71:
72: #######################################################
73: #######################################################
74:
75: my $Statistics;
76:
77: #######################################################
78: #######################################################
79:
80: =pod
81:
82: =item $show_links 'yes' or 'no' for linking to student performance data
83:
84: =item $output_mode 'html', 'excel', or 'csv' for output mode
85:
86: =item $show 'all', 'totals', or 'scores' determines how much data is output
87:
88: =item $data determines what performance data is shown
89:
90: =item $datadescription A short description of the output data selected.
91:
92: =item $base 'tries' or 'scores' determines the base of the performance shown
93:
94: =item $single_student_mode evaluates to true if we are showing only one
95: student.
96:
97: =cut
98:
99: #######################################################
100: #######################################################
101: my $show_links;
102: my $output_mode;
103: my $data;
104: my $base;
105: my $datadescription;
106: my $single_student_mode;
107:
108: #######################################################
109: #######################################################
110: # End of package variable declarations
111:
112: =pod
113:
114: =back
115:
116: =cut
117:
118: #######################################################
119: #######################################################
120:
121: =pod
122:
123: =item &BuildStudentAssessmentPage()
124:
125: Inputs:
126:
127: =over 4
128:
129: =item $r Apache Request
130:
131: =item $c Apache Connection
132:
133: =back
134:
135: =cut
136:
137: #######################################################
138: #######################################################
139: sub BuildStudentAssessmentPage {
140: my ($r,$c)=@_;
141: undef($Statistics);
142: $single_student_mode = 1 if ($ENV{'form.SelectedStudent'});
143: #
144: # Print out the HTML headers for the interface
145: # This also parses the output mode selector
146: # This step must *always* be done.
147: $r->print(&CreateInterface());
148: $r->print('<input type="hidden" name="notfirstrun" value="true" />');
149: $r->print('<input type="hidden" name="sort" value="'.
150: $ENV{'form.sort'}.'" />');
151: $r->rflush();
152: if (! exists($ENV{'form.notfirstrun'}) && ! $single_student_mode) {
153: return;
154: }
155: #
156: my $initialize = \&html_initialize;
157: my $output_student = \&html_outputstudent;
158: my $finish = \&html_finish;
159: #
160: if ($output_mode eq 'excel') {
161: $initialize = \&excel_initialize;
162: $output_student = \&excel_outputstudent;
163: $finish = \&excel_finish;
164: } elsif ($output_mode eq 'csv') {
165: $initialize = \&csv_initialize;
166: $output_student = \&csv_outputstudent;
167: $finish = \&csv_finish;
168: }
169: #
170: if($c->aborted()) { return ; }
171: #
172: # Determine which students we want to look at
173: my @Students;
174: if ($single_student_mode) {
175: @Students = (&Apache::lonstatistics::current_student());
176: $r->print(&next_and_previous_buttons());
177: $r->rflush();
178: } else {
179: @Students = @Apache::lonstatistics::Students;
180: }
181: #
182: # Perform generic initialization tasks
183: # Since we use lonnet::EXT to retrieve problem weights,
184: # to ensure current data we must clear the caches out.
185: # This makes sure that parameter changes at the student level
186: # are immediately reflected in the chart.
187: &Apache::lonnet::clear_EXT_cache_status();
188: #
189: # Call the initialize routine selected above
190: $initialize->($r);
191: foreach my $student (@Students) {
192: if($c->aborted()) {
193: $finish->($r);
194: return ;
195: }
196: # Call the output_student routine selected above
197: $output_student->($r,$student);
198: }
199: # Call the "finish" routine selected above
200: $finish->($r);
201: #
202: return;
203: }
204:
205: #######################################################
206: #######################################################
207: sub next_and_previous_buttons {
208: my $Str = '';
209: $Str .= '<input type="hidden" name="SelectedStudent" value="'.
210: $ENV{'form.SelectedStudent'}.'" />';
211: #
212: # Build the previous student link
213: my $previous = &Apache::lonstatistics::previous_student();
214: my $previousbutton = '';
215: if (defined($previous)) {
216: my $sname = $previous->{'username'}.':'.$previous->{'domain'};
217: $previousbutton .= '<input type="button" value="'.
218: 'Previous Student ('.
219: $previous->{'username'}.'@'.$previous->{'domain'}.')'.
220: '" onclick="document.Statistics.SelectedStudent.value='.
221: "'".$sname."'".';'.
222: 'document.Statistics.submit();" />';
223: } else {
224: $previousbutton .= '<input type="button" value="'.
225: 'Previous student (none)'.'" />';
226: }
227: #
228: # Build the next student link
229: my $next = &Apache::lonstatistics::next_student();
230: my $nextbutton = '';
231: if (defined($next)) {
232: my $sname = $next->{'username'}.':'.$next->{'domain'};
233: $nextbutton .= '<input type="button" value="'.
234: 'Next Student ('.
235: $next->{'username'}.'@'.$next->{'domain'}.')'.
236: '" onclick="document.Statistics.SelectedStudent.value='.
237: "'".$sname."'".';'.
238: 'document.Statistics.submit();" />';
239: } else {
240: $nextbutton .= '<input type="button" value="'.
241: 'Next student (none)'.'" />';
242: }
243: #
244: # Build the 'all students' button
245: my $all = '';
246: $all .= '<input type="button" value="All Students" '.
247: '" onclick="document.Statistics.SelectedStudent.value='.
248: "''".';'.'document.Statistics.submit();" />';
249: $Str .= $previousbutton.(' 'x5).$all.(' 'x5).$nextbutton;
250: return $Str;
251: }
252:
253: #######################################################
254: #######################################################
255:
256: sub get_student_fields_to_show {
257: my @to_show = @Apache::lonstatistics::SelectedStudentData;
258: foreach (@to_show) {
259: if ($_ eq 'all') {
260: @to_show = @Apache::lonstatistics::StudentDataOrder;
261: last;
262: }
263: }
264: return @to_show;
265: }
266:
267: #######################################################
268: #######################################################
269:
270: =pod
271:
272: =item &CreateInterface()
273:
274: Called by &BuildStudentAssessmentPage to create the top part of the
275: page which displays the chart.
276:
277: Inputs: None
278:
279: Returns: A string containing the HTML for the headers and top table for
280: the chart page.
281:
282: =cut
283:
284: #######################################################
285: #######################################################
286: sub CreateInterface {
287: my $Str = '';
288: # $Str .= &CreateLegend();
289: $Str .= '<table cellspacing="5">'."\n";
290: $Str .= '<tr>';
291: $Str .= '<td align="center"><b>Sections</b></td>';
292: $Str .= '<td align="center"><b>Student Data</b></td>';
293: $Str .= '<td align="center"><b>Enrollment Status</b></td>';
294: $Str .= '<td align="center"><b>Sequences and Folders</b></td>';
295: $Str .= '<td align="center"><b>Output Format</b></td>';
296: $Str .= '<td align="center"><b>Output Data</b></td>';
297: $Str .= '</tr>'."\n";
298: #
299: $Str .= '<tr><td align="center">'."\n";
300: $Str .= &Apache::lonstatistics::SectionSelect('Section','multiple',5);
301: $Str .= '</td><td align="center">';
302: my $only_seq_with_assessments = sub {
303: my $s=shift;
304: if ($s->{'num_assess'} < 1) {
305: return 0;
306: } else {
307: return 1;
308: }
309: };
310: $Str .= &Apache::lonstatistics::StudentDataSelect('StudentData','multiple',
311: 5,undef);
312: $Str .= '</td><td>'."\n";
313: $Str .= &Apache::lonhtmlcommon::StatusOptions(undef,undef,5);
314: $Str .= '</td><td>'."\n";
315: $Str .= &Apache::lonstatistics::MapSelect('Maps','multiple,all',5,
316: $only_seq_with_assessments);
317: $Str .= '</td><td>'."\n";
318: $Str .= &CreateAndParseOutputSelector();
319: $Str .= '</td><td>'."\n";
320: $Str .= &CreateAndParseOutputDataSelector();
321: $Str .= '</td></tr>'."\n";
322: $Str .= '</table>'."\n";
323: $Str .= '<input type="submit" value="Generate Chart" />';
324: $Str .= ' 'x8;
325: return $Str;
326: }
327:
328: #######################################################
329: #######################################################
330:
331: =pod
332:
333: =item &CreateAndParseOutputSelector()
334:
335: =cut
336:
337: #######################################################
338: #######################################################
339: my @OutputOptions =
340: ({ name => 'HTML, with links',
341: value => 'html, with links',
342: description => 'Output HTML with each symbol linked to the problem '.
343: 'which generated it.',
344: mode => 'html',
345: show_links => 'yes',
346: },
347: { name => 'HTML, with all links',
348: value => 'html, with all links',
349: description => 'Output HTML with each symbol linked to the problem '.
350: 'which generated it. '.
351: 'This includes links for unattempted problems.',
352: mode => 'html',
353: show_links => 'all',
354: },
355: { name => 'HTML, without links',
356: value => 'html, without links',
357: description => 'Output HTML. By not including links, the size of the'.
358: ' web page is greatly reduced. If your browser crashes on the '.
359: 'full display, try this.',
360: mode => 'html',
361: show_links => 'no',
362: },
363: { name => 'Excel',
364: value => 'excel',
365: description => 'Output an Excel file (compatable with Excel 95).',
366: mode => 'excel',
367: show_links => 'no',
368: },
369: { name => 'CSV',
370: value => 'csv',
371: description => 'Output a comma seperated values file suitable for '.
372: 'import into a spreadsheet program. Using this method as opposed '.
373: 'to Excel output allows you to organize your data before importing'.
374: ' it into a spreadsheet program.',
375: mode => 'csv',
376: show_links => 'no',
377: },
378: );
379:
380: sub OutputDescriptions {
381: my $Str = '';
382: $Str .= "<h2>Output Modes</h2>\n";
383: $Str .= "<dl>\n";
384: foreach my $outputmode (@OutputOptions) {
385: $Str .=" <dt>".$outputmode->{'name'}."</dt>\n";
386: $Str .=" <dd>".$outputmode->{'description'}."</dd>\n";
387: }
388: $Str .= "</dl>\n";
389: return $Str;
390: }
391:
392: sub CreateAndParseOutputSelector {
393: my $Str = '';
394: my $elementname = 'chartoutputmode';
395: #
396: # Format for output options is 'mode, restrictions';
397: my $selected = 'html, without links';
398: if (exists($ENV{'form.'.$elementname})) {
399: if (ref($ENV{'form.'.$elementname} eq 'ARRAY')) {
400: $selected = $ENV{'form.'.$elementname}->[0];
401: } else {
402: $selected = $ENV{'form.'.$elementname};
403: }
404: }
405: #
406: # Set package variables describing output mode
407: $show_links = 'no';
408: $output_mode = 'html';
409: foreach my $option (@OutputOptions) {
410: next if ($option->{'value'} ne $selected);
411: $output_mode = $option->{'mode'};
412: $show_links = $option->{'show_links'};
413: }
414:
415: #
416: # Build the form element
417: $Str = qq/<select size="5" name="$elementname">/;
418: foreach my $option (@OutputOptions) {
419: $Str .= "\n".' <option value="'.$option->{'value'}.'"';
420: $Str .= " selected " if ($option->{'value'} eq $selected);
421: $Str .= ">".$option->{'name'}."<\/option>";
422: }
423: $Str .= "\n</select>";
424: return $Str;
425: }
426:
427: ##
428: ## Data selector stuff
429: ##
430: my @OutputDataOptions =
431: (
432: { name => 'Scores',
433: base => 'scores',
434: value => 'scores',
435: shortdesc => 'Score on each Problem Part',
436: longdesc =>'The students score on each problem part, computed as'.
437: 'the part weight * part awarded',
438: },
439: { name => 'Scores Sum',
440: base => 'scores',
441: value => 'sum only',
442: shortdesc => 'Sum of Scores on each Problem Part',
443: longdesc =>'The total of the scores of the student on each problem'.
444: ' part in the sequences or folders selected.',
445: },
446: { name => 'Scores Sum & Maximums',
447: base => 'scores',
448: value => 'sum and total',
449: shortdesc => 'Total Score and Maximum Possible for each '.
450: 'Sequence or Folder',
451: longdesc => 'The score of each student as well as the '.
452: ' maximum possible on each Sequence or Folder.',
453: },
454: { name => 'Scores Summary Table Only',
455: base => 'scores',
456: value => 'final table scores',
457: shortdesc => 'Summary of Scores',
458: longdesc => 'The average score on each sequence or folder for the '.
459: 'selected students.',
460: },
461: { name =>'Tries',
462: base =>'tries',
463: value => 'tries',
464: shortdesc => 'Number of Tries before success on each Problem Part',
465: longdesc =>'The number of tries before success on each problem part.',
466: },
467: { name =>'Parts Correct',
468: base =>'tries',
469: value => 'parts correct',
470: shortdesc => 'Number of Problem Parts completed successfully.',
471: longdesc => 'The Number of Problem Parts completed successfully'.
472: ' on each sequence or folder.',
473: },
474: { name =>'Parts Correct & Maximums',
475: base =>'tries',
476: value => 'parts correct total',
477: shortdesc => 'Number of Problem Parts completed successfully.',
478: longdesc => 'The Number of Problem Parts completed successfully and '.
479: 'the maximum possible for each student',
480: },
481: { name => 'Parts Summary Table Only',
482: base => 'tries',
483: value => 'final table parts',
484: shortdesc => 'Summary of Parts Correct',
485: longdesc => 'A summary table of the average number of problem parts '.
486: 'students were able to get correct on each sequence.',
487: },
488: );
489:
490: sub HTMLifyOutputDataDescriptions {
491: my $Str = '';
492: $Str .= "<dl>\n";
493: foreach my $option (@OutputDataOptions) {
494: $Str .= ' <dt>'.$option->{'name'}.'</dt>';
495: $Str .= '<dd>'.$option->{'longdesc'}.'</dd>'."\n";
496: }
497: $Str .= "</dl>\n";
498: return $Str;
499: }
500:
501: sub CreateAndParseOutputDataSelector {
502: my $Str = '';
503: my $elementname = 'chartoutputdata';
504: #
505: my $selected = 'scores';
506: if (exists($ENV{'form.'.$elementname})) {
507: if (ref($ENV{'form.'.$elementname} eq 'ARRAY')) {
508: $selected = $ENV{'form.'.$elementname}->[0];
509: } else {
510: $selected = $ENV{'form.'.$elementname};
511: }
512: }
513: #
514: $data = 'scores';
515: foreach my $option (@OutputDataOptions) {
516: if ($option->{'value'} eq $selected) {
517: $data = $option->{'value'};
518: $base = $option->{'base'};
519: $datadescription = $option->{'shortdesc'};
520: }
521: }
522: #
523: # Build the form element
524: $Str = qq/<select size="5" name="$elementname">/;
525: foreach my $option (@OutputDataOptions) {
526: $Str .= "\n".' <option value="'.$option->{'value'}.'"';
527: $Str .= " selected " if ($option->{'value'} eq $data);
528: $Str .= ">".$option->{'name'}."<\/option>";
529: }
530: $Str .= "\n</select>";
531: return $Str;
532:
533: }
534:
535: #######################################################
536: #######################################################
537:
538: =pod
539:
540: =head2 HTML output routines
541:
542: =item &html_initialize($r)
543:
544: Create labels for the columns of student data to show.
545:
546: =item &html_outputstudent($r,$student)
547:
548: Return a line of the chart for a student.
549:
550: =item &html_finish($r)
551:
552: =cut
553:
554: #######################################################
555: #######################################################
556: {
557: my $padding;
558: my $count;
559:
560: my $nodata_count; # The number of students for which there is no data
561: my %prog_state; # progress state used by loncommon PrgWin routines
562:
563: sub html_initialize {
564: my ($r) = @_;
565: #
566: $padding = ' 'x3;
567: $count = 0;
568: $nodata_count = 0;
569: #
570: $r->print("<h3>".$ENV{'course.'.$ENV{'request.course.id'}.'.description'}.
571: " ".localtime(time)."</h3>");
572:
573: if ($data !~ /^final table/) {
574: $r->print("<h3>".$datadescription."</h3>");
575: }
576: #
577: # Set up progress window for 'final table' display only
578: if ($data =~ /^final table/) {
579: my $studentcount = scalar(@Apache::lonstatistics::Students);
580: %prog_state=&Apache::lonhtmlcommon::Create_PrgWin
581: ($r,'Summary Table Status',
582: 'Summary Table Compilation Progress', $studentcount);
583: }
584: my $Str = "<pre>\n";
585: # First, the @StudentData fields need to be listed
586: my @to_show = &get_student_fields_to_show();
587: foreach my $field (@to_show) {
588: my $title=$Apache::lonstatistics::StudentData{$field}->{'title'};
589: my $base =$Apache::lonstatistics::StudentData{$field}->{'base_width'};
590: my $width=$Apache::lonstatistics::StudentData{$field}->{'width'};
591: $Str .= $title.' 'x($width-$base).$padding;
592: }
593: # Now the selected sequences need to be listed
594: foreach my $sequence (&Apache::lonstatistics::Sequences_with_Assess()){
595: my $title = $sequence->{'title'};
596: my $base = $sequence->{'base_width'};
597: my $width = $sequence->{'width'};
598: $Str .= $title.' 'x($width-$base).$padding;
599: }
600: $Str .= "total</pre>\n";
601: $Str .= "<pre>";
602: #
603: # Check for suppression of output
604: if ($data =~ /^final table/) {
605: $Str = '';
606: }
607: $r->print($Str);
608: $r->rflush();
609: return;
610: }
611:
612: sub html_outputstudent {
613: my ($r,$student) = @_;
614: my $Str = '';
615: #
616: if($count++ % 5 == 0 && $count > 0 && $data !~ /^final table/) {
617: $r->print("</pre><pre>");
618: }
619: # First, the @StudentData fields need to be listed
620: my @to_show = &get_student_fields_to_show();
621: foreach my $field (@to_show) {
622: my $title=$student->{$field};
623: my $base = length($title);
624: my $width=$Apache::lonstatistics::StudentData{$field}->{'width'};
625: $Str .= $title.' 'x($width-$base).$padding;
626: }
627: # Get ALL the students data
628: my %StudentsData;
629: my @tmp = &Apache::loncoursedata::get_current_state
630: ($student->{'username'},$student->{'domain'},undef,
631: $ENV{'request.course.id'});
632: if ((scalar @tmp > 0) && ($tmp[0] !~ /^error:/)) {
633: %StudentsData = @tmp;
634: }
635: if (scalar(@tmp) < 1) {
636: $nodata_count++;
637: return if ($data =~ /^final table/);
638: $Str .= '<font color="blue">No Course Data</font>'."\n";
639: $r->print($Str);
640: $r->rflush();
641: return;
642: }
643: #
644: # By sequence build up the data
645: my $studentstats;
646: my $PerformanceStr = '';
647: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
648: my ($performance,$performance_length,$score,$seq_max,$rawdata);
649: if ($base eq 'tries') {
650: ($performance,$performance_length,$score,$seq_max,$rawdata) =
651: &StudentTriesOnSequence($student,\%StudentsData,
652: $seq,$show_links);
653: } else {
654: ($performance,$performance_length,$score,$seq_max,$rawdata) =
655: &StudentPerformanceOnSequence($student,\%StudentsData,
656: $seq,$show_links);
657: }
658: my $ratio = sprintf("%3d",$score).'/'.sprintf("%3d",$seq_max);
659: #
660: if ($data eq 'sum and total' || $data eq 'parts correct total') {
661: $performance = $ratio;
662: $performance .= ' 'x($seq->{'width'}-length($ratio));
663: } elsif ($data eq 'sum only' || $data eq 'parts correct') {
664: $performance = $score;
665: $performance .= ' 'x($seq->{'width'}-length($score));
666: } else {
667: # Pad with extra spaces
668: $performance .= ' 'x($seq->{'width'}-$performance_length-
669: length($ratio)
670: ).$ratio;
671: }
672: #
673: $Str .= $performance.$padding;
674: #
675: $studentstats->{$seq->{'symb'}}->{'score'}= $score;
676: $studentstats->{$seq->{'symb'}}->{'max'} = $seq_max;
677: }
678: #
679: # Total it up and store the statistics info.
680: my ($score,$max) = (0,0);
681: while (my ($symb,$seq_stats) = each (%{$studentstats})) {
682: $Statistics->{$symb}->{'score'} += $seq_stats->{'score'};
683: if ($Statistics->{$symb}->{'max'} < $seq_stats->{'max'}) {
684: $Statistics->{$symb}->{'max'} = $seq_stats->{'max'};
685: }
686: $score += $seq_stats->{'score'};
687: $max += $seq_stats->{'max'};
688: }
689: $Str .= ' '.' 'x(length($max)-length($score)).$score.'/'.$max;
690: $Str .= " \n";
691: #
692: # Check for suppressed output and update the progress window if so...
693: if ($data =~ /^final table/) {
694: $Str = '';
695: &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
696: 'last student');
697: }
698: #
699: $r->print($Str);
700: #
701: $r->rflush();
702: return;
703: }
704:
705: sub html_finish {
706: my ($r) = @_;
707: #
708: # Check for suppressed output and close the progress window if so
709: if ($data =~ /^final table/) {
710: &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
711: } else {
712: $r->print("</pre>\n");
713: }
714: if ($single_student_mode) {
715: $r->print(&SingleStudentTotal());
716: } else {
717: $r->print(&StudentAverageTotal());
718: }
719: $r->rflush();
720: return;
721: }
722:
723: sub StudentAverageTotal {
724: my $Str = "<h3>Summary Tables</h3>\n";
725: my $num_students = scalar(@Apache::lonstatistics::Students);
726: my $total_ave = 0;
727: my $total_max = 0;
728: $Str .= '<table border=2 cellspacing="1">'."\n";
729: $Str .= "<tr><th>Title</th><th>Average</th><th>Maximum</th></tr>\n";
730: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
731: my $ave;
732: if ($num_students > $nodata_count) {
733: $ave = int(100*($Statistics->{$seq->{'symb'}}->{'score'}/
734: ($num_students-$nodata_count)))/100;
735: } else {
736: $ave = 0;
737: }
738: $total_ave += $ave;
739: my $max = $Statistics->{$seq->{'symb'}}->{'max'};
740: $total_max += $max;
741: if ($ave == 0) {
742: $ave = "0.00";
743: }
744: $ave .= ' ';
745: $max .= ' ';
746: $Str .= '<tr><td>'.$seq->{'title'}.'</td>'.
747: '<td align="right">'.$ave.'</td>'.
748: '<td align="right">'.$max.'</td></tr>'."\n";
749: }
750: $total_ave = int(100*$total_ave)/100; # only two digit
751: $Str .= "</table>\n";
752: $Str .= '<table border=2 cellspacing="1">'."\n";
753: $Str .= '<tr><th>Number of Students</th><th>Average</th>'.
754: "<th>Maximum</th></tr>\n";
755: $Str .= '<tr><td>'.($num_students-$nodata_count).'</td>'.
756: '<td>'.$total_ave.'</td><td>'.$total_max.'</td>';
757: $Str .= "</table>\n";
758: return $Str;
759: }
760:
761: sub SingleStudentTotal {
762: my $student = &Apache::lonstatistics::current_student();
763: my $Str = "<h3>Summary table for ".$student->{'fullname'}." ".
764: $student->{'username'}.'@'.$student->{'domain'}."</h3>\n";
765: $Str .= '<table border=2 cellspacing="1">'."\n";
766: $Str .=
767: "<tr><th>Sequence or Folder</th><th>Score</th><th>Maximum</th></tr>\n";
768: my $total = 0;
769: my $total_max = 0;
770: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
771: my $value = $Statistics->{$seq->{'symb'}}->{'score'};
772: my $max = $Statistics->{$seq->{'symb'}}->{'max'};
773: $Str .= '<tr><td>'.$seq->{'title'}.'</td>'.
774: '<td align="right">'.$value.'</td>'.
775: '<td align="right">'.$max.'</td></tr>'."\n";
776: $total += $value;
777: $total_max +=$max;
778: }
779: $Str .= '<tr><td><b>Total</b></td>'.
780: '<td align="right">'.$total.'</td>'.
781: '<td align="right">'.$total_max."</td></tr>\n";
782: $Str .= "</table>\n";
783: return $Str;
784: }
785:
786: }
787:
788: #######################################################
789: #######################################################
790:
791: =pod
792:
793: =head2 EXCEL subroutines
794:
795: =item &excel_initialize($r)
796:
797: =item &excel_outputstudent($r,$student)
798:
799: =item &excel_finish($r)
800:
801: =cut
802:
803: #######################################################
804: #######################################################
805: {
806:
807: my $excel_sheet;
808: my $excel_workbook;
809:
810: my $filename;
811: my $rows_output;
812: my $cols_output;
813:
814: my %prog_state; # progress window state
815: my $request_aborted;
816:
817: sub excel_initialize {
818: my ($r) = @_;
819: #
820: $request_aborted = undef;
821: my $total_columns = scalar(&get_student_fields_to_show());
822: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
823: # Add 2 because we need a 'sum' and 'total' column for each
824: $total_columns += $seq->{'num_assess_parts'}+2;
825: }
826: if ($data eq 'tries' && $total_columns > 255) {
827: $r->print(<<END);
828: <h2>Unable to Complete Request</h2>
829: <p>
830: LON-CAPA is unable to produce your Excel spreadsheet because your selections
831: will result in more than 255 columns. Excel allows only 255 columns in a
832: spreadsheet.
833: </p><p>
834: You may consider reducing the number of <b>Sequences or Folders</b> you
835: have selected.
836: </p><p>
837: LON-CAPA can produce <b>CSV</b> files of this data or Excel files of the
838: summary data (<b>Parts Correct</b> or <b>Parts Correct & Totals</b>).
839: </p>
840: END
841: $request_aborted = 1;
842: }
843: if ($data eq 'scores' && $total_columns > 255) {
844: $r->print(<<END);
845: <h2>Unable to Complete Request</h2>
846: <p>
847: LON-CAPA is unable to produce your Excel spreadsheet because your selections
848: will result in more than 255 columns. Excel allows only 255 columns in a
849: spreadsheet.
850: </p><p>
851: You may consider reducing the number of <b>Sequences or Folders</b> you
852: have selected.
853: </p><p>
854: LON-CAPA can produce <b>CSV</b> files of this data or Excel files of the
855: summary data (<b>Scores Sum</b> or <b>Scores Sum & Totals</b>).
856: </p>
857: END
858: $request_aborted = 1;
859: }
860: if ($data =~ /^final table/) {
861: $r->print(<<END);
862: <h2>Unable to Complete Request</h2>
863: <p>
864: The <b>Summary Table (Scores)</b> option is not available for non-HTML output.
865: </p>
866: END
867: $request_aborted = 1;
868: }
869: return if ($request_aborted);
870: #
871: $filename = '/prtspool/'.
872: $ENV{'user.name'}.'_'.$ENV{'user.domain'}.'_'.
873: time.'_'.rand(1000000000).'.xls';
874: #
875: $excel_workbook = undef;
876: $excel_sheet = undef;
877: #
878: $rows_output = 0;
879: $cols_output = 0;
880: #
881: # Create sheet
882: $excel_workbook = Spreadsheet::WriteExcel->new('/home/httpd'.$filename);
883: #
884: # Check for errors
885: if (! defined($excel_workbook)) {
886: $r->log_error("Error creating excel spreadsheet $filename: $!");
887: $r->print("Problems creating new Excel file. ".
888: "This error has been logged. ".
889: "Please alert your LON-CAPA administrator");
890: return ;
891: }
892: #
893: # The excel spreadsheet stores temporary data in files, then put them
894: # together. If needed we should be able to disable this (memory only).
895: # The temporary directory must be specified before calling 'addworksheet'.
896: # File::Temp is used to determine the temporary directory.
897: $excel_workbook->set_tempdir($Apache::lonnet::tmpdir);
898: #
899: # Add a worksheet
900: my $sheetname = $ENV{'course.'.$ENV{'request.course.id'}.'.description'};
901: if (length($sheetname) > 31) {
902: $sheetname = substr($sheetname,0,31);
903: }
904: $excel_sheet = $excel_workbook->addworksheet($sheetname);
905: #
906: # Put the course description in the header
907: $excel_sheet->write($rows_output,$cols_output++,
908: $ENV{'course.'.$ENV{'request.course.id'}.'.description'});
909: $cols_output += 3;
910: #
911: # Put a description of the sections listed
912: my $sectionstring = '';
913: my @Sections = @Apache::lonstatistics::SelectedSections;
914: if (scalar(@Sections) > 1) {
915: if (scalar(@Sections) > 2) {
916: my $last = pop(@Sections);
917: $sectionstring = "Sections ".join(', ',@Sections).', and '.$last;
918: } else {
919: $sectionstring = "Sections ".join(' and ',@Sections);
920: }
921: } else {
922: if ($Sections[0] eq 'all') {
923: $sectionstring = "All sections";
924: } else {
925: $sectionstring = "Section ".$Sections[0];
926: }
927: }
928: $excel_sheet->write($rows_output,$cols_output++,$sectionstring);
929: $cols_output += scalar(@Sections);
930: #
931: # Put the date in there too
932: $excel_sheet->write($rows_output++,$cols_output++,
933: 'Compiled on '.localtime(time));
934: #
935: $cols_output = 0;
936: $excel_sheet->write($rows_output++,$cols_output++,$datadescription);
937: #
938: if ($data eq 'tries' || $data eq 'scores') {
939: $rows_output++;
940: }
941: #
942: # Add the student headers
943: $cols_output = 0;
944: foreach my $field (&get_student_fields_to_show()) {
945: $excel_sheet->write($rows_output,$cols_output++,$field);
946: }
947: my $row_offset = 0;
948: if ($data eq 'tries' || $data eq 'scores') {
949: $row_offset = -1;
950: }
951: #
952: # Add the remaining column headers
953: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
954: $excel_sheet->write($rows_output+$row_offset,
955: $cols_output,$seq->{'title'});
956: if ($data eq 'tries' || $data eq 'scores') {
957: foreach my $res (@{$seq->{'contents'}}) {
958: next if ($res->{'type'} ne 'assessment');
959: if (scalar(@{$res->{'parts'}}) > 1) {
960: foreach my $part (@{$res->{'parts'}}) {
961: $excel_sheet->write($rows_output,
962: $cols_output++,
963: $res->{'title'}.' part '.$part);
964: }
965: } else {
966: $excel_sheet->write($rows_output,
967: $cols_output++,
968: $res->{'title'});
969: }
970: }
971: $excel_sheet->write($rows_output,$cols_output++,'score');
972: $excel_sheet->write($rows_output,$cols_output++,'maximum');
973: } elsif ($data eq 'sum and total' || $data eq 'parts correct total') {
974: $excel_sheet->write($rows_output+1,$cols_output,'score');
975: $excel_sheet->write($rows_output+1,$cols_output+1,'maximum');
976: $cols_output += 2;
977: } else {
978: $cols_output++;
979: }
980: }
981: #
982: # Bookkeeping
983: if ($data eq 'sum and total' || $data eq 'parts correct total') {
984: $rows_output += 2;
985: } else {
986: $rows_output += 1;
987: }
988: #
989: # Output a row for MAX
990: $cols_output = 0;
991: foreach my $field (&get_student_fields_to_show()) {
992: if ($field eq 'username' || $field eq 'fullname' ||
993: $field eq 'id') {
994: $excel_sheet->write($rows_output,$cols_output++,'Maximum');
995: } else {
996: $excel_sheet->write($rows_output,$cols_output++,'');
997: }
998: }
999: #
1000: # Add the maximums for each sequence or assessment
1001: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
1002: my $weight;
1003: my $max = 0;
1004: foreach my $resource (@{$seq->{'contents'}}) {
1005: next if ($resource->{'type'} ne 'assessment');
1006: foreach my $part (@{$resource->{'parts'}}) {
1007: $weight = 1;
1008: if ($base eq 'scores') {
1009: $weight = &Apache::lonnet::EXT
1010: ('resource.'.$part.'.weight',$resource->{'symb'},
1011: undef,undef,undef);
1012: if (!defined($weight) || ($weight eq '')) {
1013: $weight=1;
1014: }
1015: }
1016: if ($data eq 'scores') {
1017: $excel_sheet->write($rows_output,$cols_output++,$weight);
1018: } elsif ($data eq 'tries') {
1019: $excel_sheet->write($rows_output,$cols_output++,'');
1020: }
1021: $max += $weight;
1022: }
1023: }
1024: if (! ($data eq 'sum only' || $data eq 'parts correct')) {
1025: $excel_sheet->write($rows_output,$cols_output++,'');
1026: }
1027: $excel_sheet->write($rows_output,$cols_output++,$max);
1028: }
1029: $rows_output++;
1030: #
1031: # Let the user know what we are doing
1032: my $studentcount = scalar(@Apache::lonstatistics::Students);
1033: $r->print("<h1>Compiling Excel spreadsheet for ".
1034: $studentcount.' student');
1035: $r->print('s') if ($studentcount > 1);
1036: $r->print("</h1>\n");
1037: $r->rflush();
1038: #
1039: # Initialize progress window
1040: %prog_state=&Apache::lonhtmlcommon::Create_PrgWin
1041: ($r,'Excel File Compilation Status',
1042: 'Excel File Compilation Progress', $studentcount);
1043: #
1044: return;
1045: }
1046:
1047: sub excel_outputstudent {
1048: my ($r,$student) = @_;
1049: return if ($request_aborted);
1050: return if (! defined($excel_sheet));
1051: $cols_output=0;
1052: #
1053: # Write out student data
1054: my @to_show = &get_student_fields_to_show();
1055: foreach my $field (@to_show) {
1056: $excel_sheet->write($rows_output,$cols_output++,$student->{$field});
1057: }
1058: #
1059: # Get student assessment data
1060: my %StudentsData;
1061: my @tmp = &Apache::loncoursedata::get_current_state($student->{'username'},
1062: $student->{'domain'},
1063: undef,
1064: $ENV{'request.course.id'});
1065: if ((scalar @tmp > 0) && ($tmp[0] !~ /^error:/)) {
1066: %StudentsData = @tmp;
1067: }
1068: #
1069: # Write out sequence scores and totals data
1070: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
1071: my ($performance,$performance_length,$score,$seq_max,$rawdata);
1072: if ($base eq 'tries') {
1073: ($performance,$performance_length,$score,$seq_max,$rawdata) =
1074: &StudentTriesOnSequence($student,\%StudentsData,
1075: $seq,'no');
1076: } else {
1077: ($performance,$performance_length,$score,$seq_max,$rawdata) =
1078: &StudentPerformanceOnSequence($student,\%StudentsData,
1079: $seq,'no');
1080: }
1081: if ($data eq 'tries' || $data eq 'scores') {
1082: foreach my $value (@$rawdata) {
1083: $excel_sheet->write($rows_output,$cols_output++,$value);
1084: }
1085: $excel_sheet->write($rows_output,$cols_output++,$score);
1086: $excel_sheet->write($rows_output,$cols_output++,$seq_max);
1087: } elsif ($data eq 'sum and total' || $data eq 'sum only' ||
1088: $data eq 'parts correct' || $data eq 'parts correct total') {
1089: $excel_sheet->write($rows_output,$cols_output++,$score);
1090: }
1091: if ($data eq 'sum and total' || $data eq 'parts correct total') {
1092: $excel_sheet->write($rows_output,$cols_output++,$seq_max);
1093: }
1094: }
1095: #
1096: # Bookkeeping
1097: $rows_output++;
1098: $cols_output=0;
1099: #
1100: # Update the progress window
1101: &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,'last student');
1102: return;
1103: }
1104:
1105: sub excel_finish {
1106: my ($r) = @_;
1107: return if ($request_aborted);
1108: return if (! defined($excel_sheet));
1109: #
1110: # Write the excel file
1111: $excel_workbook->close();
1112: my $c = $r->connection();
1113: #
1114: return if($c->aborted());
1115: #
1116: # Close the progress window
1117: &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
1118: #
1119: # Tell the user where to get their excel file
1120: $r->print('<br />'.
1121: '<a href="'.$filename.'">Your Excel spreadsheet.</a>'."\n");
1122: $r->rflush();
1123: return;
1124: }
1125:
1126: }
1127: #######################################################
1128: #######################################################
1129:
1130: =pod
1131:
1132: =head2 CSV output routines
1133:
1134: =item &csv_initialize($r)
1135:
1136: =item &csv_outputstudent($r,$student)
1137:
1138: =item &csv_finish($r)
1139:
1140: =cut
1141:
1142: #######################################################
1143: #######################################################
1144: {
1145:
1146: my $outputfile;
1147: my $filename;
1148: my $request_aborted;
1149: my %prog_state; # progress window state
1150:
1151: sub csv_initialize{
1152: my ($r) = @_;
1153: #
1154: # Clean up
1155: $filename = undef;
1156: $outputfile = undef;
1157: undef(%prog_state);
1158: #
1159: # Deal with unimplemented requests
1160: $request_aborted = undef;
1161: if ($data =~ /final table/) {
1162: $r->print(<<END);
1163: <h2>Unable to Complete Request</h2>
1164: <p>
1165: The <b>Summary Table (Scores)</b> option is not available for non-HTML output.
1166: </p>
1167: END
1168: $request_aborted = 1;
1169: }
1170: return if ($request_aborted);
1171:
1172: #
1173: # Open a file
1174: $filename = '/prtspool/'.
1175: $ENV{'user.name'}.'_'.$ENV{'user.domain'}.'_'.
1176: time.'_'.rand(1000000000).'.csv';
1177: unless ($outputfile = Apache::File->new('>/home/httpd'.$filename)) {
1178: $r->log_error("Couldn't open $filename for output $!");
1179: $r->print("Problems occured in writing the csv file. ".
1180: "This error has been logged. ".
1181: "Please alert your LON-CAPA administrator.");
1182: $outputfile = undef;
1183: }
1184: #
1185: # Datestamp
1186: my $description = $ENV{'course.'.$ENV{'request.course.id'}.'.description'};
1187: print $outputfile '"'.&Apache::loncommon::csv_translate($description).'",'.
1188: '"'.&Apache::loncommon::csv_translate(scalar(localtime(time))).'"'.
1189: "\n";
1190: #
1191: # Print out the headings
1192: my $Str = '';
1193: my $Str2 = undef;
1194: foreach my $field (&get_student_fields_to_show()) {
1195: if ($data eq 'sum only') {
1196: $Str .= '"'.&Apache::loncommon::csv_translate($field).'",';
1197: } elsif ($data eq 'sum and total' || $data eq 'parts correct total') {
1198: $Str .= '"",'; # first row empty on the student fields
1199: $Str2 .= '"'.&Apache::loncommon::csv_translate($field).'",';
1200: } elsif ($data eq 'scores' || $data eq 'tries' ||
1201: $data eq 'parts correct') {
1202: $Str .= '"",';
1203: $Str2 .= '"'.&Apache::loncommon::csv_translate($field).'",';
1204: }
1205: }
1206: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
1207: if ($data eq 'sum only' || $data eq 'parts correct') {
1208: $Str .= '"'.&Apache::loncommon::csv_translate($seq->{'title'}).
1209: '",';
1210: } elsif ($data eq 'sum and total' || $data eq 'parts correct total') {
1211: $Str .= '"'.&Apache::loncommon::csv_translate($seq->{'title'}).
1212: '","",';
1213: $Str2 .= '"score","total possible",';
1214: } elsif ($data eq 'scores' || $data eq 'tries') {
1215: $Str .= '"'.&Apache::loncommon::csv_translate($seq->{'title'}).
1216: '",';
1217: $Str .= '"",'x($seq->{'num_assess_parts'}-1+2);
1218: foreach my $res (@{$seq->{'contents'}}) {
1219: next if ($res->{'type'} ne 'assessment');
1220: foreach my $part (@{$res->{'parts'}}) {
1221: $Str2 .= '"'.&Apache::loncommon::csv_translate($res->{'title'}.', Part '.$part).'",';
1222: }
1223: }
1224: $Str2 .= '"score","total possible",';
1225: }
1226: }
1227: chop($Str);
1228: $Str .= "\n";
1229: print $outputfile $Str;
1230: if (defined($Str2)) {
1231: chop($Str2);
1232: $Str2 .= "\n";
1233: print $outputfile $Str2;
1234: }
1235: #
1236: # Initialize progress window
1237: my $studentcount = scalar(@Apache::lonstatistics::Students);
1238: %prog_state=&Apache::lonhtmlcommon::Create_PrgWin
1239: ($r,'CSV File Compilation Status',
1240: 'CSV File Compilation Progress', $studentcount);
1241: return;
1242: }
1243:
1244: sub csv_outputstudent {
1245: my ($r,$student) = @_;
1246: return if ($request_aborted);
1247: return if (! defined($outputfile));
1248: my $Str = '';
1249: #
1250: # Output student fields
1251: my @to_show = &get_student_fields_to_show();
1252: foreach my $field (@to_show) {
1253: $Str .= '"'.&Apache::loncommon::csv_translate($student->{$field}).'",';
1254: }
1255: #
1256: # Get student assessment data
1257: my %StudentsData;
1258: my @tmp = &Apache::loncoursedata::get_current_state($student->{'username'},
1259: $student->{'domain'},
1260: undef,
1261: $ENV{'request.course.id'});
1262: if ((scalar @tmp > 0) && ($tmp[0] !~ /^error:/)) {
1263: %StudentsData = @tmp;
1264: }
1265: #
1266: # Output performance data
1267: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
1268: my ($performance,$performance_length,$score,$seq_max,$rawdata);
1269: if ($base eq 'tries') {
1270: ($performance,$performance_length,$score,$seq_max,$rawdata) =
1271: &StudentTriesOnSequence($student,\%StudentsData,
1272: $seq,'no');
1273: } else {
1274: ($performance,$performance_length,$score,$seq_max,$rawdata) =
1275: &StudentPerformanceOnSequence($student,\%StudentsData,
1276: $seq,'no');
1277: }
1278: if ($data eq 'sum only' || $data eq 'parts correct') {
1279: $Str .= '"'.$score.'",';
1280: } elsif ($data eq 'sum and total' || $data eq 'parts correct total') {
1281: $Str .= '"'.$score.'","'.$seq_max.'",';
1282: } elsif ($data eq 'scores' || $data eq 'tries') {
1283: $Str .= '"'.join('","',(@$rawdata,$score,$seq_max)).'",';
1284: }
1285: }
1286: chop($Str);
1287: $Str .= "\n";
1288: print $outputfile $Str;
1289: #
1290: # Update the progress window
1291: &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,'last student');
1292: return;
1293: }
1294:
1295: sub csv_finish {
1296: my ($r) = @_;
1297: return if ($request_aborted);
1298: return if (! defined($outputfile));
1299: close($outputfile);
1300: #
1301: my $c = $r->connection();
1302: return if ($c->aborted());
1303: #
1304: # Close the progress window
1305: &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
1306: #
1307: # Tell the user where to get their csv file
1308: $r->print('<br />'.
1309: '<a href="'.$filename.'">Your csv file.</a>'."\n");
1310: $r->rflush();
1311: return;
1312:
1313: }
1314:
1315: }
1316:
1317: #######################################################
1318: #######################################################
1319:
1320: =pod
1321:
1322: =item &StudentTriesOnSequence()
1323:
1324: Inputs:
1325:
1326: =over 4
1327:
1328: =item $student
1329:
1330: =item $studentdata Hash ref to all student data
1331:
1332: =item $seq Hash ref, the sequence we are working on
1333:
1334: =item $links if defined we will output links to each resource.
1335:
1336: =back
1337:
1338: =cut
1339:
1340: #######################################################
1341: #######################################################
1342: sub StudentTriesOnSequence {
1343: my ($student,$studentdata,$seq,$links) = @_;
1344: $links = 'no' if (! defined($links));
1345: my $Str = '';
1346: my ($sum,$max) = (0,0);
1347: my $performance_length = 0;
1348: my @TriesData = ();
1349: my $tries;
1350: foreach my $resource (@{$seq->{'contents'}}) {
1351: next if ($resource->{'type'} ne 'assessment');
1352: my $resource_data = $studentdata->{$resource->{'symb'}};
1353: my $value = '';
1354: foreach my $partnum (@{$resource->{'parts'}}) {
1355: $tries = undef;
1356: $max++;
1357: $performance_length++;
1358: my $symbol = ' '; # default to space
1359: #
1360: if (exists($resource_data->{'resource.'.$partnum.'.solved'})) {
1361: my $status = $resource_data->{'resource.'.$partnum.'.solved'};
1362: if ($status eq 'correct_by_override') {
1363: $symbol = '+';
1364: $sum++;
1365: } elsif ($status eq 'incorrect_by_override') {
1366: $symbol = '-';
1367: } elsif ($status eq 'ungraded_attempted') {
1368: $symbol = '#';
1369: } elsif ($status eq 'incorrect_attempted') {
1370: $symbol = '.';
1371: } elsif ($status eq 'excused') {
1372: $symbol = 'x';
1373: $max--;
1374: } elsif ($status eq 'correct_by_student' &&
1375: exists($resource_data->{'resource.'.$partnum.'.tries'})){
1376: $tries = $resource_data->{'resource.'.$partnum.'.tries'};
1377: if ($tries > 9) {
1378: $symbol = '*';
1379: } elsif ($tries > 0) {
1380: $symbol = $tries;
1381: } else {
1382: $symbol = ' ';
1383: }
1384: $sum++;
1385: } elsif (exists($resource_data->{'resource.'.
1386: $partnum.'.tries'})){
1387: $symbol = '.';
1388: } else {
1389: $symbol = ' ';
1390: }
1391: } else {
1392: # Unsolved. Did they try?
1393: if (exists($resource_data->{'resource.'.$partnum.'.tries'})){
1394: $symbol = '.';
1395: } else {
1396: $symbol = ' ';
1397: }
1398: }
1399: #
1400: if (! defined($tries)) {
1401: $tries = $symbol;
1402: }
1403: push (@TriesData,$tries);
1404: #
1405: if ( ($links eq 'yes' && $symbol ne ' ') ||
1406: ($links eq 'all')) {
1407: if (length($symbol) > 1) {
1408: &Apache::lonnet::logthis('length of symbol "'.$symbol.'" > 1');
1409: }
1410: $symbol = '<a href="/adm/grades'.
1411: '?symb='.&Apache::lonnet::escape($resource->{'symb'}).
1412: '&student='.$student->{'username'}.
1413: '&domain='.$student->{'domain'}.
1414: '&command=submission">'.$symbol.'</a>';
1415: }
1416: $value .= $symbol;
1417: }
1418: $Str .= $value;
1419: }
1420: if ($seq->{'randompick'}) {
1421: $max = $seq->{'randompick'};
1422: }
1423: return ($Str,$performance_length,$sum,$max,\@TriesData);
1424: }
1425:
1426: #######################################################
1427: #######################################################
1428:
1429: =pod
1430:
1431: =item &StudentPerformanceOnSequence()
1432:
1433: Inputs:
1434:
1435: =over 4
1436:
1437: =item $student
1438:
1439: =item $studentdata Hash ref to all student data
1440:
1441: =item $seq Hash ref, the sequence we are working on
1442:
1443: =item $links if defined we will output links to each resource.
1444:
1445: =back
1446:
1447: =cut
1448:
1449: #######################################################
1450: #######################################################
1451: sub StudentPerformanceOnSequence {
1452: my ($student,$studentdata,$seq,$links) = @_;
1453: $links = 'no' if (! defined($links));
1454: my $Str = ''; # final result string
1455: my ($score,$max) = (0,0);
1456: my $performance_length = 0;
1457: my $symbol;
1458: my @ScoreData = ();
1459: my $partscore;
1460: foreach my $resource (@{$seq->{'contents'}}) {
1461: next if ($resource->{'type'} ne 'assessment');
1462: my $resource_data = $studentdata->{$resource->{'symb'}};
1463: foreach my $part (@{$resource->{'parts'}}) {
1464: $partscore = undef;
1465: my $weight = &Apache::lonnet::EXT('resource.'.$part.'.weight',
1466: $resource->{'symb'},
1467: $student->{'domain'},
1468: $student->{'username'},
1469: $student->{'section'});
1470: if (!defined($weight) || ($weight eq '')) {
1471: $weight=1;
1472: }
1473: #
1474: $max += $weight; # see the 'excused' branch below...
1475: $performance_length++; # one character per part
1476: $symbol = ' '; # default to space
1477: #
1478: my $awarded = 0;
1479: if (exists($resource_data->{'resource.'.$part.'.awarded'})) {
1480: $awarded = $resource_data->{'resource.'.$part.'.awarded'};
1481: }
1482: #
1483: $partscore = $weight*$awarded;
1484: $score += $partscore;
1485: $symbol = $weight;
1486: if (length($symbol) > 1) {
1487: $symbol = '*';
1488: }
1489: if (exists($resource_data->{'resource.'.$part.'.solved'})) {
1490: my $status = $resource_data->{'resource.'.$part.'.solved'};
1491: if ($status eq 'excused') {
1492: $symbol = 'x';
1493: $max -= $weight; # Do not count 'excused' problems.
1494: }
1495: } else {
1496: # Unsolved. Did they try?
1497: if (exists($resource_data->{'resource.'.$part.'.tries'})){
1498: $symbol = '.';
1499: } else {
1500: $symbol = ' ';
1501: }
1502: }
1503: #
1504: if ( ($links eq 'yes' && $symbol ne ' ') || ($links eq 'all')) {
1505: $symbol = '<a href="/adm/grades'.
1506: '?symb='.&Apache::lonnet::escape($resource->{'symb'}).
1507: '&student='.$student->{'username'}.
1508: '&domain='.$student->{'domain'}.
1509: '&command=submission">'.$symbol.'</a>';
1510: }
1511: if (! defined($partscore)) {
1512: $partscore = $symbol;
1513: }
1514: push (@ScoreData,$partscore);
1515: }
1516: $Str .= $symbol;
1517: }
1518: return ($Str,$performance_length,$score,$max,\@ScoreData);
1519: }
1520:
1521: #######################################################
1522: #######################################################
1523:
1524: =pod
1525:
1526: =item &CreateLegend()
1527:
1528: This function returns a formatted string containing the legend for the
1529: chart. The legend describes the symbols used to represent grades for
1530: problems.
1531:
1532: =cut
1533:
1534: #######################################################
1535: #######################################################
1536: sub CreateLegend {
1537: my $Str = "<p><pre>".
1538: " 1 correct by student in 1 try\n".
1539: " 7 correct by student in 7 tries\n".
1540: " * correct by student in more than 9 tries\n".
1541: " + correct by hand grading or override\n".
1542: " - incorrect by override\n".
1543: " . incorrect attempted\n".
1544: " # ungraded attempted\n".
1545: " not attempted (blank field)\n".
1546: " x excused".
1547: "</pre><p>";
1548: return $Str;
1549: }
1550:
1551: #######################################################
1552: #######################################################
1553:
1554: =pod
1555:
1556: =back
1557:
1558: =cut
1559:
1560: #######################################################
1561: #######################################################
1562:
1563: 1;
1564:
1565: __END__
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