1: # The LearningOnline Network with CAPA
2: #
3: # $Id: lonstudentassessment.pm,v 1.58 2003/06/11 16:19:39 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: $r->rflush();
152: #
153: if (! exists($ENV{'form.notfirstrun'}) && ! $single_student_mode) {
154: return;
155: }
156: #
157: my $initialize = \&html_initialize;
158: my $output_student = \&html_outputstudent;
159: my $finish = \&html_finish;
160: #
161: if ($output_mode eq 'excel') {
162: $initialize = \&excel_initialize;
163: $output_student = \&excel_outputstudent;
164: $finish = \&excel_finish;
165: } elsif ($output_mode eq 'csv') {
166: $initialize = \&csv_initialize;
167: $output_student = \&csv_outputstudent;
168: $finish = \&csv_finish;
169: }
170: #
171: if($c->aborted()) { return ; }
172: #
173: # Determine which students we want to look at
174: my @Students;
175: if ($single_student_mode) {
176: @Students = (&Apache::lonstatistics::current_student());
177: $r->print(&next_and_previous_buttons());
178: $r->rflush();
179: } else {
180: @Students = @Apache::lonstatistics::Students;
181: }
182: #
183: # Perform generic initialization tasks
184: # Since we use lonnet::EXT to retrieve problem weights,
185: # to ensure current data we must clear the caches out.
186: # This makes sure that parameter changes at the student level
187: # are immediately reflected in the chart.
188: &Apache::lonnet::clear_EXT_cache_status();
189: #
190: # Call the initialize routine selected above
191: $initialize->($r);
192: foreach my $student (@Students) {
193: if($c->aborted()) {
194: $finish->($r);
195: return ;
196: }
197: # Call the output_student routine selected above
198: $output_student->($r,$student);
199: }
200: # Call the "finish" routine selected above
201: $finish->($r);
202: #
203: return;
204: }
205:
206: #######################################################
207: #######################################################
208: sub next_and_previous_buttons {
209: my $Str = '';
210: $Str .= '<input type="hidden" name="SelectedStudent" value="'.
211: $ENV{'form.SelectedStudent'}.'" />';
212: #
213: # Build the previous student link
214: my $previous = &Apache::lonstatistics::previous_student();
215: my $previousbutton = '';
216: if (defined($previous)) {
217: my $sname = $previous->{'username'}.':'.$previous->{'domain'};
218: $previousbutton .= '<input type="button" value="'.
219: 'Previous Student ('.
220: $previous->{'username'}.'@'.$previous->{'domain'}.')'.
221: '" onclick="document.Statistics.SelectedStudent.value='.
222: "'".$sname."'".';'.
223: 'document.Statistics.submit();" />';
224: } else {
225: $previousbutton .= '<input type="button" value="'.
226: 'Previous student (none)'.'" />';
227: }
228: #
229: # Build the next student link
230: my $next = &Apache::lonstatistics::next_student();
231: my $nextbutton = '';
232: if (defined($next)) {
233: my $sname = $next->{'username'}.':'.$next->{'domain'};
234: $nextbutton .= '<input type="button" value="'.
235: 'Next Student ('.
236: $next->{'username'}.'@'.$next->{'domain'}.')'.
237: '" onclick="document.Statistics.SelectedStudent.value='.
238: "'".$sname."'".';'.
239: 'document.Statistics.submit();" />';
240: } else {
241: $nextbutton .= '<input type="button" value="'.
242: 'Next student (none)'.'" />';
243: }
244: #
245: # Build the 'all students' button
246: my $all = '';
247: $all .= '<input type="button" value="All Students" '.
248: '" onclick="document.Statistics.SelectedStudent.value='.
249: "''".';'.'document.Statistics.submit();" />';
250: $Str .= $previousbutton.(' 'x5).$all.(' 'x5).$nextbutton;
251: return $Str;
252: }
253:
254: #######################################################
255: #######################################################
256:
257: sub get_student_fields_to_show {
258: my @to_show = @Apache::lonstatistics::SelectedStudentData;
259: foreach (@to_show) {
260: if ($_ eq 'all') {
261: @to_show = @Apache::lonstatistics::StudentDataOrder;
262: last;
263: }
264: }
265: return @to_show;
266: }
267:
268: #######################################################
269: #######################################################
270:
271: =pod
272:
273: =item &CreateInterface()
274:
275: Called by &BuildStudentAssessmentPage to create the top part of the
276: page which displays the chart.
277:
278: Inputs: None
279:
280: Returns: A string containing the HTML for the headers and top table for
281: the chart page.
282:
283: =cut
284:
285: #######################################################
286: #######################################################
287: sub CreateInterface {
288: my $Str = '';
289: # $Str .= &CreateLegend();
290: $Str .= '<table cellspacing="5">'."\n";
291: $Str .= '<tr>';
292: $Str .= '<td align="center"><b>Sections</b></td>';
293: $Str .= '<td align="center"><b>Student Data</b></td>';
294: $Str .= '<td align="center"><b>Enrollment Status</b></td>';
295: $Str .= '<td align="center"><b>Sequences and Folders</b></td>';
296: $Str .= '<td align="center"><b>Output Format</b>'.
297: &Apache::loncommon::help_open_topic("Chart_Output_Formats").
298: '</td>';
299: $Str .= '<td align="center"><b>Output Data</b>'.
300: &Apache::loncommon::help_open_topic("Chart_Output_Data").
301: '</td>';
302: $Str .= '</tr>'."\n";
303: #
304: $Str .= '<tr><td align="center">'."\n";
305: $Str .= &Apache::lonstatistics::SectionSelect('Section','multiple',5);
306: $Str .= '</td><td align="center">';
307: my $only_seq_with_assessments = sub {
308: my $s=shift;
309: if ($s->{'num_assess'} < 1) {
310: return 0;
311: } else {
312: return 1;
313: }
314: };
315: $Str .= &Apache::lonstatistics::StudentDataSelect('StudentData','multiple',
316: 5,undef);
317: $Str .= '</td><td>'."\n";
318: $Str .= &Apache::lonhtmlcommon::StatusOptions(undef,undef,5);
319: $Str .= '</td><td>'."\n";
320: $Str .= &Apache::lonstatistics::MapSelect('Maps','multiple,all',5,
321: $only_seq_with_assessments);
322: $Str .= '</td><td>'."\n";
323: $Str .= &CreateAndParseOutputSelector();
324: $Str .= '</td><td>'."\n";
325: $Str .= &CreateAndParseOutputDataSelector();
326: $Str .= '</td></tr>'."\n";
327: $Str .= '</table>'."\n";
328: $Str .= '<input type="submit" value="Generate Chart" />';
329: $Str .= ' 'x8;
330: return $Str;
331: }
332:
333: #######################################################
334: #######################################################
335:
336: =pod
337:
338: =item &CreateAndParseOutputSelector()
339:
340: =cut
341:
342: #######################################################
343: #######################################################
344: my @OutputOptions =
345: ({ name => 'HTML, with links',
346: value => 'html, with links',
347: description => 'Output HTML with each symbol linked to the problem '.
348: 'which generated it.',
349: mode => 'html',
350: show_links => 'yes',
351: },
352: { name => 'HTML, with all links',
353: value => 'html, with all links',
354: description => 'Output HTML with each symbol linked to the problem '.
355: 'which generated it. '.
356: 'This includes links for unattempted problems.',
357: mode => 'html',
358: show_links => 'all',
359: },
360: { name => 'HTML, without links',
361: value => 'html, without links',
362: description => 'Output HTML. By not including links, the size of the'.
363: ' web page is greatly reduced. If your browser crashes on the '.
364: 'full display, try this.',
365: mode => 'html',
366: show_links => 'no',
367: },
368: { name => 'Excel',
369: value => 'excel',
370: description => 'Output an Excel file (compatable with Excel 95).',
371: mode => 'excel',
372: show_links => 'no',
373: },
374: { name => 'CSV',
375: value => 'csv',
376: description => 'Output a comma seperated values file suitable for '.
377: 'import into a spreadsheet program. Using this method as opposed '.
378: 'to Excel output allows you to organize your data before importing'.
379: ' it into a spreadsheet program.',
380: mode => 'csv',
381: show_links => 'no',
382: },
383: );
384:
385: sub OutputDescriptions {
386: my $Str = '';
387: $Str .= "<h2>Output Formats</h2>\n";
388: $Str .= "<dl>\n";
389: foreach my $outputmode (@OutputOptions) {
390: $Str .=" <dt>".$outputmode->{'name'}."</dt>\n";
391: $Str .=" <dd>".$outputmode->{'description'}."</dd>\n";
392: }
393: $Str .= "</dl>\n";
394: return $Str;
395: }
396:
397: sub CreateAndParseOutputSelector {
398: my $Str = '';
399: my $elementname = 'chartoutputmode';
400: #
401: # Format for output options is 'mode, restrictions';
402: my $selected = 'html, without links';
403: if (exists($ENV{'form.'.$elementname})) {
404: if (ref($ENV{'form.'.$elementname} eq 'ARRAY')) {
405: $selected = $ENV{'form.'.$elementname}->[0];
406: } else {
407: $selected = $ENV{'form.'.$elementname};
408: }
409: }
410: #
411: # Set package variables describing output mode
412: $show_links = 'no';
413: $output_mode = 'html';
414: foreach my $option (@OutputOptions) {
415: next if ($option->{'value'} ne $selected);
416: $output_mode = $option->{'mode'};
417: $show_links = $option->{'show_links'};
418: }
419:
420: #
421: # Build the form element
422: $Str = qq/<select size="5" name="$elementname">/;
423: foreach my $option (@OutputOptions) {
424: $Str .= "\n".' <option value="'.$option->{'value'}.'"';
425: $Str .= " selected " if ($option->{'value'} eq $selected);
426: $Str .= ">".$option->{'name'}."<\/option>";
427: }
428: $Str .= "\n</select>";
429: return $Str;
430: }
431:
432: ##
433: ## Data selector stuff
434: ##
435: my @OutputDataOptions =
436: (
437: { name => 'Scores',
438: base => 'scores',
439: value => 'scores',
440: shortdesc => 'Score on each Problem Part',
441: longdesc =>'The students score on each problem part, computed as'.
442: 'the part weight * part awarded',
443: },
444: { name => 'Scores Sum',
445: base => 'scores',
446: value => 'sum only',
447: shortdesc => 'Sum of Scores on each Problem Part',
448: longdesc =>'The total of the scores of the student on each problem'.
449: ' part in the sequences or folders selected.',
450: },
451: { name => 'Scores Sum & Maximums',
452: base => 'scores',
453: value => 'sum and total',
454: shortdesc => 'Total Score and Maximum Possible for each '.
455: 'Sequence or Folder',
456: longdesc => 'The score of each student as well as the '.
457: ' maximum possible on each Sequence or Folder.',
458: },
459: { name => 'Scores Summary Table Only',
460: base => 'scores',
461: value => 'final table scores',
462: shortdesc => 'Summary of Scores',
463: longdesc => 'The average score on each sequence or folder for the '.
464: 'selected students.',
465: },
466: { name =>'Tries',
467: base =>'tries',
468: value => 'tries',
469: shortdesc => 'Number of Tries before success on each Problem Part',
470: longdesc =>'The number of tries before success on each problem part.',
471: },
472: { name =>'Parts Correct',
473: base =>'tries',
474: value => 'parts correct',
475: shortdesc => 'Number of Problem Parts completed successfully.',
476: longdesc => 'The Number of Problem Parts completed successfully'.
477: ' on each sequence or folder.',
478: },
479: { name =>'Parts Correct & Maximums',
480: base =>'tries',
481: value => 'parts correct total',
482: shortdesc => 'Number of Problem Parts completed successfully.',
483: longdesc => 'The Number of Problem Parts completed successfully and '.
484: 'the maximum possible for each student',
485: },
486: { name => 'Parts Summary Table Only',
487: base => 'tries',
488: value => 'final table parts',
489: shortdesc => 'Summary of Parts Correct',
490: longdesc => 'A summary table of the average number of problem parts '.
491: 'students were able to get correct on each sequence.',
492: },
493: );
494:
495: sub HTMLifyOutputDataDescriptions {
496: my $Str = '';
497: $Str .= "<h2>Output Data</h2>\n";
498: $Str .= "<dl>\n";
499: foreach my $option (@OutputDataOptions) {
500: $Str .= ' <dt>'.$option->{'name'}.'</dt>';
501: $Str .= '<dd>'.$option->{'longdesc'}.'</dd>'."\n";
502: }
503: $Str .= "</dl>\n";
504: return $Str;
505: }
506:
507: sub CreateAndParseOutputDataSelector {
508: my $Str = '';
509: my $elementname = 'chartoutputdata';
510: #
511: my $selected = 'scores';
512: if (exists($ENV{'form.'.$elementname})) {
513: if (ref($ENV{'form.'.$elementname} eq 'ARRAY')) {
514: $selected = $ENV{'form.'.$elementname}->[0];
515: } else {
516: $selected = $ENV{'form.'.$elementname};
517: }
518: }
519: #
520: $data = 'scores';
521: foreach my $option (@OutputDataOptions) {
522: if ($option->{'value'} eq $selected) {
523: $data = $option->{'value'};
524: $base = $option->{'base'};
525: $datadescription = $option->{'shortdesc'};
526: }
527: }
528: #
529: # Build the form element
530: $Str = qq/<select size="5" name="$elementname">/;
531: foreach my $option (@OutputDataOptions) {
532: $Str .= "\n".' <option value="'.$option->{'value'}.'"';
533: $Str .= " selected " if ($option->{'value'} eq $data);
534: $Str .= ">".$option->{'name'}."<\/option>";
535: }
536: $Str .= "\n</select>";
537: return $Str;
538:
539: }
540:
541: #######################################################
542: #######################################################
543:
544: =pod
545:
546: =head2 HTML output routines
547:
548: =item &html_initialize($r)
549:
550: Create labels for the columns of student data to show.
551:
552: =item &html_outputstudent($r,$student)
553:
554: Return a line of the chart for a student.
555:
556: =item &html_finish($r)
557:
558: =cut
559:
560: #######################################################
561: #######################################################
562: {
563: my $padding;
564: my $count;
565:
566: my $nodata_count; # The number of students for which there is no data
567: my %prog_state; # progress state used by loncommon PrgWin routines
568:
569: sub html_initialize {
570: my ($r) = @_;
571: #
572: $padding = ' 'x3;
573: $count = 0;
574: $nodata_count = 0;
575: #
576: $r->print("<h3>".$ENV{'course.'.$ENV{'request.course.id'}.'.description'}.
577: " ".localtime(time)."</h3>");
578:
579: if ($data !~ /^final table/) {
580: $r->print("<h3>".$datadescription."</h3>");
581: }
582: #
583: # Set up progress window for 'final table' display only
584: if ($data =~ /^final table/) {
585: my $studentcount = scalar(@Apache::lonstatistics::Students);
586: %prog_state=&Apache::lonhtmlcommon::Create_PrgWin
587: ($r,'Summary Table Status',
588: 'Summary Table Compilation Progress', $studentcount);
589: }
590: my $Str = "<pre>\n";
591: # First, the @StudentData fields need to be listed
592: my @to_show = &get_student_fields_to_show();
593: foreach my $field (@to_show) {
594: my $title=$Apache::lonstatistics::StudentData{$field}->{'title'};
595: my $base =$Apache::lonstatistics::StudentData{$field}->{'base_width'};
596: my $width=$Apache::lonstatistics::StudentData{$field}->{'width'};
597: $Str .= $title.' 'x($width-$base).$padding;
598: }
599: # Now the selected sequences need to be listed
600: foreach my $sequence (&Apache::lonstatistics::Sequences_with_Assess()){
601: my $title = $sequence->{'title'};
602: my $base = $sequence->{'base_width'};
603: my $width = $sequence->{'width'};
604: $Str .= $title.' 'x($width-$base).$padding;
605: }
606: $Str .= "total</pre>\n";
607: $Str .= "<pre>";
608: #
609: # Check for suppression of output
610: if ($data =~ /^final table/) {
611: $Str = '';
612: }
613: $r->print($Str);
614: $r->rflush();
615: return;
616: }
617:
618: sub html_outputstudent {
619: my ($r,$student) = @_;
620: my $Str = '';
621: #
622: if($count++ % 5 == 0 && $count > 0 && $data !~ /^final table/) {
623: $r->print("</pre><pre>");
624: }
625: # First, the @StudentData fields need to be listed
626: my @to_show = &get_student_fields_to_show();
627: foreach my $field (@to_show) {
628: my $title=$student->{$field};
629: my $base = length($title);
630: my $width=$Apache::lonstatistics::StudentData{$field}->{'width'};
631: $Str .= $title.' 'x($width-$base).$padding;
632: }
633: # Get ALL the students data
634: my %StudentsData;
635: my @tmp = &Apache::loncoursedata::get_current_state
636: ($student->{'username'},$student->{'domain'},undef,
637: $ENV{'request.course.id'});
638: if ((scalar @tmp > 0) && ($tmp[0] !~ /^error:/)) {
639: %StudentsData = @tmp;
640: }
641: if (scalar(@tmp) < 1) {
642: $nodata_count++;
643: return if ($data =~ /^final table/);
644: $Str .= '<font color="blue">No Course Data</font>'."\n";
645: $r->print($Str);
646: $r->rflush();
647: return;
648: }
649: #
650: # By sequence build up the data
651: my $studentstats;
652: my $PerformanceStr = '';
653: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
654: my ($performance,$performance_length,$score,$seq_max,$rawdata);
655: if ($base eq 'tries') {
656: ($performance,$performance_length,$score,$seq_max,$rawdata) =
657: &StudentTriesOnSequence($student,\%StudentsData,
658: $seq,$show_links);
659: } else {
660: ($performance,$performance_length,$score,$seq_max,$rawdata) =
661: &StudentPerformanceOnSequence($student,\%StudentsData,
662: $seq,$show_links);
663: }
664: my $ratio = sprintf("%3d",$score).'/'.sprintf("%3d",$seq_max);
665: #
666: if ($data eq 'sum and total' || $data eq 'parts correct total') {
667: $performance = $ratio;
668: $performance .= ' 'x($seq->{'width'}-length($ratio));
669: } elsif ($data eq 'sum only' || $data eq 'parts correct') {
670: $performance = $score;
671: $performance .= ' 'x($seq->{'width'}-length($score));
672: } else {
673: # Pad with extra spaces
674: $performance .= ' 'x($seq->{'width'}-$performance_length-
675: length($ratio)
676: ).$ratio;
677: }
678: #
679: $Str .= $performance.$padding;
680: #
681: $studentstats->{$seq->{'symb'}}->{'score'}= $score;
682: $studentstats->{$seq->{'symb'}}->{'max'} = $seq_max;
683: }
684: #
685: # Total it up and store the statistics info.
686: my ($score,$max) = (0,0);
687: while (my ($symb,$seq_stats) = each (%{$studentstats})) {
688: $Statistics->{$symb}->{'score'} += $seq_stats->{'score'};
689: if ($Statistics->{$symb}->{'max'} < $seq_stats->{'max'}) {
690: $Statistics->{$symb}->{'max'} = $seq_stats->{'max'};
691: }
692: $score += $seq_stats->{'score'};
693: $max += $seq_stats->{'max'};
694: }
695: $Str .= ' '.' 'x(length($max)-length($score)).$score.'/'.$max;
696: $Str .= " \n";
697: #
698: # Check for suppressed output and update the progress window if so...
699: if ($data =~ /^final table/) {
700: $Str = '';
701: &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
702: 'last student');
703: }
704: #
705: $r->print($Str);
706: #
707: $r->rflush();
708: return;
709: }
710:
711: sub html_finish {
712: my ($r) = @_;
713: #
714: # Check for suppressed output and close the progress window if so
715: if ($data =~ /^final table/) {
716: &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
717: } else {
718: $r->print("</pre>\n");
719: }
720: if ($single_student_mode) {
721: $r->print(&SingleStudentTotal());
722: } else {
723: $r->print(&StudentAverageTotal());
724: }
725: $r->rflush();
726: return;
727: }
728:
729: sub StudentAverageTotal {
730: my $Str = "<h3>Summary Tables</h3>\n";
731: my $num_students = scalar(@Apache::lonstatistics::Students);
732: my $total_ave = 0;
733: my $total_max = 0;
734: $Str .= '<table border=2 cellspacing="1">'."\n";
735: $Str .= "<tr><th>Title</th><th>Average</th><th>Maximum</th></tr>\n";
736: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
737: my $ave;
738: if ($num_students > $nodata_count) {
739: $ave = int(100*($Statistics->{$seq->{'symb'}}->{'score'}/
740: ($num_students-$nodata_count)))/100;
741: } else {
742: $ave = 0;
743: }
744: $total_ave += $ave;
745: my $max = $Statistics->{$seq->{'symb'}}->{'max'};
746: $total_max += $max;
747: if ($ave == 0) {
748: $ave = "0.00";
749: }
750: $ave .= ' ';
751: $max .= ' ';
752: $Str .= '<tr><td>'.$seq->{'title'}.'</td>'.
753: '<td align="right">'.$ave.'</td>'.
754: '<td align="right">'.$max.'</td></tr>'."\n";
755: }
756: $total_ave = int(100*$total_ave)/100; # only two digit
757: $Str .= "</table>\n";
758: $Str .= '<table border=2 cellspacing="1">'."\n";
759: $Str .= '<tr><th>Number of Students</th><th>Average</th>'.
760: "<th>Maximum</th></tr>\n";
761: $Str .= '<tr><td>'.($num_students-$nodata_count).'</td>'.
762: '<td>'.$total_ave.'</td><td>'.$total_max.'</td>';
763: $Str .= "</table>\n";
764: return $Str;
765: }
766:
767: sub SingleStudentTotal {
768: my $student = &Apache::lonstatistics::current_student();
769: my $Str = "<h3>Summary table for ".$student->{'fullname'}." ".
770: $student->{'username'}.'@'.$student->{'domain'}."</h3>\n";
771: $Str .= '<table border=2 cellspacing="1">'."\n";
772: $Str .=
773: "<tr><th>Sequence or Folder</th><th>Score</th><th>Maximum</th></tr>\n";
774: my $total = 0;
775: my $total_max = 0;
776: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
777: my $value = $Statistics->{$seq->{'symb'}}->{'score'};
778: my $max = $Statistics->{$seq->{'symb'}}->{'max'};
779: $Str .= '<tr><td>'.$seq->{'title'}.'</td>'.
780: '<td align="right">'.$value.'</td>'.
781: '<td align="right">'.$max.'</td></tr>'."\n";
782: $total += $value;
783: $total_max +=$max;
784: }
785: $Str .= '<tr><td><b>Total</b></td>'.
786: '<td align="right">'.$total.'</td>'.
787: '<td align="right">'.$total_max."</td></tr>\n";
788: $Str .= "</table>\n";
789: return $Str;
790: }
791:
792: }
793:
794: #######################################################
795: #######################################################
796:
797: =pod
798:
799: =head2 EXCEL subroutines
800:
801: =item &excel_initialize($r)
802:
803: =item &excel_outputstudent($r,$student)
804:
805: =item &excel_finish($r)
806:
807: =cut
808:
809: #######################################################
810: #######################################################
811: {
812:
813: my $excel_sheet;
814: my $excel_workbook;
815:
816: my $filename;
817: my $rows_output;
818: my $cols_output;
819:
820: my %prog_state; # progress window state
821: my $request_aborted;
822:
823: sub excel_initialize {
824: my ($r) = @_;
825: #
826: $request_aborted = undef;
827: my $total_columns = scalar(&get_student_fields_to_show());
828: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
829: # Add 2 because we need a 'sum' and 'total' column for each
830: $total_columns += $seq->{'num_assess_parts'}+2;
831: }
832: if ($data eq 'tries' && $total_columns > 255) {
833: $r->print(<<END);
834: <h2>Unable to Complete Request</h2>
835: <p>
836: LON-CAPA is unable to produce your Excel spreadsheet because your selections
837: will result in more than 255 columns. Excel allows only 255 columns in a
838: spreadsheet.
839: </p><p>
840: You may consider reducing the number of <b>Sequences or Folders</b> you
841: have selected.
842: </p><p>
843: LON-CAPA can produce <b>CSV</b> files of this data or Excel files of the
844: summary data (<b>Parts Correct</b> or <b>Parts Correct & Totals</b>).
845: </p>
846: END
847: $request_aborted = 1;
848: }
849: if ($data eq 'scores' && $total_columns > 255) {
850: $r->print(<<END);
851: <h2>Unable to Complete Request</h2>
852: <p>
853: LON-CAPA is unable to produce your Excel spreadsheet because your selections
854: will result in more than 255 columns. Excel allows only 255 columns in a
855: spreadsheet.
856: </p><p>
857: You may consider reducing the number of <b>Sequences or Folders</b> you
858: have selected.
859: </p><p>
860: LON-CAPA can produce <b>CSV</b> files of this data or Excel files of the
861: summary data (<b>Scores Sum</b> or <b>Scores Sum & Totals</b>).
862: </p>
863: END
864: $request_aborted = 1;
865: }
866: if ($data =~ /^final table/) {
867: $r->print(<<END);
868: <h2>Unable to Complete Request</h2>
869: <p>
870: The <b>Summary Table (Scores)</b> option is not available for non-HTML output.
871: </p>
872: END
873: $request_aborted = 1;
874: }
875: return if ($request_aborted);
876: #
877: $filename = '/prtspool/'.
878: $ENV{'user.name'}.'_'.$ENV{'user.domain'}.'_'.
879: time.'_'.rand(1000000000).'.xls';
880: #
881: $excel_workbook = undef;
882: $excel_sheet = undef;
883: #
884: $rows_output = 0;
885: $cols_output = 0;
886: #
887: # Create sheet
888: $excel_workbook = Spreadsheet::WriteExcel->new('/home/httpd'.$filename);
889: #
890: # Check for errors
891: if (! defined($excel_workbook)) {
892: $r->log_error("Error creating excel spreadsheet $filename: $!");
893: $r->print("Problems creating new Excel file. ".
894: "This error has been logged. ".
895: "Please alert your LON-CAPA administrator");
896: return ;
897: }
898: #
899: # The excel spreadsheet stores temporary data in files, then put them
900: # together. If needed we should be able to disable this (memory only).
901: # The temporary directory must be specified before calling 'addworksheet'.
902: # File::Temp is used to determine the temporary directory.
903: $excel_workbook->set_tempdir($Apache::lonnet::tmpdir);
904: #
905: # Add a worksheet
906: my $sheetname = $ENV{'course.'.$ENV{'request.course.id'}.'.description'};
907: if (length($sheetname) > 31) {
908: $sheetname = substr($sheetname,0,31);
909: }
910: $excel_sheet = $excel_workbook->addworksheet($sheetname);
911: #
912: # Put the course description in the header
913: $excel_sheet->write($rows_output,$cols_output++,
914: $ENV{'course.'.$ENV{'request.course.id'}.'.description'});
915: $cols_output += 3;
916: #
917: # Put a description of the sections listed
918: my $sectionstring = '';
919: my @Sections = @Apache::lonstatistics::SelectedSections;
920: if (scalar(@Sections) > 1) {
921: if (scalar(@Sections) > 2) {
922: my $last = pop(@Sections);
923: $sectionstring = "Sections ".join(', ',@Sections).', and '.$last;
924: } else {
925: $sectionstring = "Sections ".join(' and ',@Sections);
926: }
927: } else {
928: if ($Sections[0] eq 'all') {
929: $sectionstring = "All sections";
930: } else {
931: $sectionstring = "Section ".$Sections[0];
932: }
933: }
934: $excel_sheet->write($rows_output,$cols_output++,$sectionstring);
935: $cols_output += scalar(@Sections);
936: #
937: # Put the date in there too
938: $excel_sheet->write($rows_output++,$cols_output++,
939: 'Compiled on '.localtime(time));
940: #
941: $cols_output = 0;
942: $excel_sheet->write($rows_output++,$cols_output++,$datadescription);
943: #
944: if ($data eq 'tries' || $data eq 'scores') {
945: $rows_output++;
946: }
947: #
948: # Add the student headers
949: $cols_output = 0;
950: foreach my $field (&get_student_fields_to_show()) {
951: $excel_sheet->write($rows_output,$cols_output++,$field);
952: }
953: my $row_offset = 0;
954: if ($data eq 'tries' || $data eq 'scores') {
955: $row_offset = -1;
956: }
957: #
958: # Add the remaining column headers
959: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
960: $excel_sheet->write($rows_output+$row_offset,
961: $cols_output,$seq->{'title'});
962: if ($data eq 'tries' || $data eq 'scores') {
963: foreach my $res (@{$seq->{'contents'}}) {
964: next if ($res->{'type'} ne 'assessment');
965: if (scalar(@{$res->{'parts'}}) > 1) {
966: foreach my $part (@{$res->{'parts'}}) {
967: $excel_sheet->write($rows_output,
968: $cols_output++,
969: $res->{'title'}.' part '.$part);
970: }
971: } else {
972: $excel_sheet->write($rows_output,
973: $cols_output++,
974: $res->{'title'});
975: }
976: }
977: $excel_sheet->write($rows_output,$cols_output++,'score');
978: $excel_sheet->write($rows_output,$cols_output++,'maximum');
979: } elsif ($data eq 'sum and total' || $data eq 'parts correct total') {
980: $excel_sheet->write($rows_output+1,$cols_output,'score');
981: $excel_sheet->write($rows_output+1,$cols_output+1,'maximum');
982: $cols_output += 2;
983: } else {
984: $cols_output++;
985: }
986: }
987: #
988: # Bookkeeping
989: if ($data eq 'sum and total' || $data eq 'parts correct total') {
990: $rows_output += 2;
991: } else {
992: $rows_output += 1;
993: }
994: #
995: # Output a row for MAX
996: $cols_output = 0;
997: foreach my $field (&get_student_fields_to_show()) {
998: if ($field eq 'username' || $field eq 'fullname' ||
999: $field eq 'id') {
1000: $excel_sheet->write($rows_output,$cols_output++,'Maximum');
1001: } else {
1002: $excel_sheet->write($rows_output,$cols_output++,'');
1003: }
1004: }
1005: #
1006: # Add the maximums for each sequence or assessment
1007: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
1008: my $weight;
1009: my $max = 0;
1010: foreach my $resource (@{$seq->{'contents'}}) {
1011: next if ($resource->{'type'} ne 'assessment');
1012: foreach my $part (@{$resource->{'parts'}}) {
1013: $weight = 1;
1014: if ($base eq 'scores') {
1015: $weight = &Apache::lonnet::EXT
1016: ('resource.'.$part.'.weight',$resource->{'symb'},
1017: undef,undef,undef);
1018: if (!defined($weight) || ($weight eq '')) {
1019: $weight=1;
1020: }
1021: }
1022: if ($data eq 'scores') {
1023: $excel_sheet->write($rows_output,$cols_output++,$weight);
1024: } elsif ($data eq 'tries') {
1025: $excel_sheet->write($rows_output,$cols_output++,'');
1026: }
1027: $max += $weight;
1028: }
1029: }
1030: if (! ($data eq 'sum only' || $data eq 'parts correct')) {
1031: $excel_sheet->write($rows_output,$cols_output++,'');
1032: }
1033: $excel_sheet->write($rows_output,$cols_output++,$max);
1034: }
1035: $rows_output++;
1036: #
1037: # Let the user know what we are doing
1038: my $studentcount = scalar(@Apache::lonstatistics::Students);
1039: $r->print("<h1>Compiling Excel spreadsheet for ".
1040: $studentcount.' student');
1041: $r->print('s') if ($studentcount > 1);
1042: $r->print("</h1>\n");
1043: $r->rflush();
1044: #
1045: # Initialize progress window
1046: %prog_state=&Apache::lonhtmlcommon::Create_PrgWin
1047: ($r,'Excel File Compilation Status',
1048: 'Excel File Compilation Progress', $studentcount);
1049: #
1050: return;
1051: }
1052:
1053: sub excel_outputstudent {
1054: my ($r,$student) = @_;
1055: return if ($request_aborted);
1056: return if (! defined($excel_sheet));
1057: $cols_output=0;
1058: #
1059: # Write out student data
1060: my @to_show = &get_student_fields_to_show();
1061: foreach my $field (@to_show) {
1062: $excel_sheet->write($rows_output,$cols_output++,$student->{$field});
1063: }
1064: #
1065: # Get student assessment data
1066: my %StudentsData;
1067: my @tmp = &Apache::loncoursedata::get_current_state($student->{'username'},
1068: $student->{'domain'},
1069: undef,
1070: $ENV{'request.course.id'});
1071: if ((scalar @tmp > 0) && ($tmp[0] !~ /^error:/)) {
1072: %StudentsData = @tmp;
1073: }
1074: #
1075: # Write out sequence scores and totals data
1076: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
1077: my ($performance,$performance_length,$score,$seq_max,$rawdata);
1078: if ($base eq 'tries') {
1079: ($performance,$performance_length,$score,$seq_max,$rawdata) =
1080: &StudentTriesOnSequence($student,\%StudentsData,
1081: $seq,'no');
1082: } else {
1083: ($performance,$performance_length,$score,$seq_max,$rawdata) =
1084: &StudentPerformanceOnSequence($student,\%StudentsData,
1085: $seq,'no');
1086: }
1087: if ($data eq 'tries' || $data eq 'scores') {
1088: foreach my $value (@$rawdata) {
1089: $excel_sheet->write($rows_output,$cols_output++,$value);
1090: }
1091: $excel_sheet->write($rows_output,$cols_output++,$score);
1092: $excel_sheet->write($rows_output,$cols_output++,$seq_max);
1093: } elsif ($data eq 'sum and total' || $data eq 'sum only' ||
1094: $data eq 'parts correct' || $data eq 'parts correct total') {
1095: $excel_sheet->write($rows_output,$cols_output++,$score);
1096: }
1097: if ($data eq 'sum and total' || $data eq 'parts correct total') {
1098: $excel_sheet->write($rows_output,$cols_output++,$seq_max);
1099: }
1100: }
1101: #
1102: # Bookkeeping
1103: $rows_output++;
1104: $cols_output=0;
1105: #
1106: # Update the progress window
1107: &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,'last student');
1108: return;
1109: }
1110:
1111: sub excel_finish {
1112: my ($r) = @_;
1113: return if ($request_aborted);
1114: return if (! defined($excel_sheet));
1115: #
1116: # Write the excel file
1117: $excel_workbook->close();
1118: my $c = $r->connection();
1119: #
1120: return if($c->aborted());
1121: #
1122: # Close the progress window
1123: &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
1124: #
1125: # Tell the user where to get their excel file
1126: $r->print('<br />'.
1127: '<a href="'.$filename.'">Your Excel spreadsheet.</a>'."\n");
1128: $r->rflush();
1129: return;
1130: }
1131:
1132: }
1133: #######################################################
1134: #######################################################
1135:
1136: =pod
1137:
1138: =head2 CSV output routines
1139:
1140: =item &csv_initialize($r)
1141:
1142: =item &csv_outputstudent($r,$student)
1143:
1144: =item &csv_finish($r)
1145:
1146: =cut
1147:
1148: #######################################################
1149: #######################################################
1150: {
1151:
1152: my $outputfile;
1153: my $filename;
1154: my $request_aborted;
1155: my %prog_state; # progress window state
1156:
1157: sub csv_initialize{
1158: my ($r) = @_;
1159: #
1160: # Clean up
1161: $filename = undef;
1162: $outputfile = undef;
1163: undef(%prog_state);
1164: #
1165: # Deal with unimplemented requests
1166: $request_aborted = undef;
1167: if ($data =~ /final table/) {
1168: $r->print(<<END);
1169: <h2>Unable to Complete Request</h2>
1170: <p>
1171: The <b>Summary Table (Scores)</b> option is not available for non-HTML output.
1172: </p>
1173: END
1174: $request_aborted = 1;
1175: }
1176: return if ($request_aborted);
1177:
1178: #
1179: # Open a file
1180: $filename = '/prtspool/'.
1181: $ENV{'user.name'}.'_'.$ENV{'user.domain'}.'_'.
1182: time.'_'.rand(1000000000).'.csv';
1183: unless ($outputfile = Apache::File->new('>/home/httpd'.$filename)) {
1184: $r->log_error("Couldn't open $filename for output $!");
1185: $r->print("Problems occured in writing the csv file. ".
1186: "This error has been logged. ".
1187: "Please alert your LON-CAPA administrator.");
1188: $outputfile = undef;
1189: }
1190: #
1191: # Datestamp
1192: my $description = $ENV{'course.'.$ENV{'request.course.id'}.'.description'};
1193: print $outputfile '"'.&Apache::loncommon::csv_translate($description).'",'.
1194: '"'.&Apache::loncommon::csv_translate(scalar(localtime(time))).'"'.
1195: "\n";
1196: #
1197: # Print out the headings
1198: my $Str = '';
1199: my $Str2 = undef;
1200: foreach my $field (&get_student_fields_to_show()) {
1201: if ($data eq 'sum only') {
1202: $Str .= '"'.&Apache::loncommon::csv_translate($field).'",';
1203: } elsif ($data eq 'sum and total' || $data eq 'parts correct total') {
1204: $Str .= '"",'; # first row empty on the student fields
1205: $Str2 .= '"'.&Apache::loncommon::csv_translate($field).'",';
1206: } elsif ($data eq 'scores' || $data eq 'tries' ||
1207: $data eq 'parts correct') {
1208: $Str .= '"",';
1209: $Str2 .= '"'.&Apache::loncommon::csv_translate($field).'",';
1210: }
1211: }
1212: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
1213: if ($data eq 'sum only' || $data eq 'parts correct') {
1214: $Str .= '"'.&Apache::loncommon::csv_translate($seq->{'title'}).
1215: '",';
1216: } elsif ($data eq 'sum and total' || $data eq 'parts correct total') {
1217: $Str .= '"'.&Apache::loncommon::csv_translate($seq->{'title'}).
1218: '","",';
1219: $Str2 .= '"score","total possible",';
1220: } elsif ($data eq 'scores' || $data eq 'tries') {
1221: $Str .= '"'.&Apache::loncommon::csv_translate($seq->{'title'}).
1222: '",';
1223: $Str .= '"",'x($seq->{'num_assess_parts'}-1+2);
1224: foreach my $res (@{$seq->{'contents'}}) {
1225: next if ($res->{'type'} ne 'assessment');
1226: foreach my $part (@{$res->{'parts'}}) {
1227: $Str2 .= '"'.&Apache::loncommon::csv_translate($res->{'title'}.', Part '.$part).'",';
1228: }
1229: }
1230: $Str2 .= '"score","total possible",';
1231: }
1232: }
1233: chop($Str);
1234: $Str .= "\n";
1235: print $outputfile $Str;
1236: if (defined($Str2)) {
1237: chop($Str2);
1238: $Str2 .= "\n";
1239: print $outputfile $Str2;
1240: }
1241: #
1242: # Initialize progress window
1243: my $studentcount = scalar(@Apache::lonstatistics::Students);
1244: %prog_state=&Apache::lonhtmlcommon::Create_PrgWin
1245: ($r,'CSV File Compilation Status',
1246: 'CSV File Compilation Progress', $studentcount);
1247: return;
1248: }
1249:
1250: sub csv_outputstudent {
1251: my ($r,$student) = @_;
1252: return if ($request_aborted);
1253: return if (! defined($outputfile));
1254: my $Str = '';
1255: #
1256: # Output student fields
1257: my @to_show = &get_student_fields_to_show();
1258: foreach my $field (@to_show) {
1259: $Str .= '"'.&Apache::loncommon::csv_translate($student->{$field}).'",';
1260: }
1261: #
1262: # Get student assessment data
1263: my %StudentsData;
1264: my @tmp = &Apache::loncoursedata::get_current_state($student->{'username'},
1265: $student->{'domain'},
1266: undef,
1267: $ENV{'request.course.id'});
1268: if ((scalar @tmp > 0) && ($tmp[0] !~ /^error:/)) {
1269: %StudentsData = @tmp;
1270: }
1271: #
1272: # Output performance data
1273: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
1274: my ($performance,$performance_length,$score,$seq_max,$rawdata);
1275: if ($base eq 'tries') {
1276: ($performance,$performance_length,$score,$seq_max,$rawdata) =
1277: &StudentTriesOnSequence($student,\%StudentsData,
1278: $seq,'no');
1279: } else {
1280: ($performance,$performance_length,$score,$seq_max,$rawdata) =
1281: &StudentPerformanceOnSequence($student,\%StudentsData,
1282: $seq,'no');
1283: }
1284: if ($data eq 'sum only' || $data eq 'parts correct') {
1285: $Str .= '"'.$score.'",';
1286: } elsif ($data eq 'sum and total' || $data eq 'parts correct total') {
1287: $Str .= '"'.$score.'","'.$seq_max.'",';
1288: } elsif ($data eq 'scores' || $data eq 'tries') {
1289: $Str .= '"'.join('","',(@$rawdata,$score,$seq_max)).'",';
1290: }
1291: }
1292: chop($Str);
1293: $Str .= "\n";
1294: print $outputfile $Str;
1295: #
1296: # Update the progress window
1297: &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,'last student');
1298: return;
1299: }
1300:
1301: sub csv_finish {
1302: my ($r) = @_;
1303: return if ($request_aborted);
1304: return if (! defined($outputfile));
1305: close($outputfile);
1306: #
1307: my $c = $r->connection();
1308: return if ($c->aborted());
1309: #
1310: # Close the progress window
1311: &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
1312: #
1313: # Tell the user where to get their csv file
1314: $r->print('<br />'.
1315: '<a href="'.$filename.'">Your csv file.</a>'."\n");
1316: $r->rflush();
1317: return;
1318:
1319: }
1320:
1321: }
1322:
1323: #######################################################
1324: #######################################################
1325:
1326: =pod
1327:
1328: =item &StudentTriesOnSequence()
1329:
1330: Inputs:
1331:
1332: =over 4
1333:
1334: =item $student
1335:
1336: =item $studentdata Hash ref to all student data
1337:
1338: =item $seq Hash ref, the sequence we are working on
1339:
1340: =item $links if defined we will output links to each resource.
1341:
1342: =back
1343:
1344: =cut
1345:
1346: #######################################################
1347: #######################################################
1348: sub StudentTriesOnSequence {
1349: my ($student,$studentdata,$seq,$links) = @_;
1350: $links = 'no' if (! defined($links));
1351: my $Str = '';
1352: my ($sum,$max) = (0,0);
1353: my $performance_length = 0;
1354: my @TriesData = ();
1355: my $tries;
1356: foreach my $resource (@{$seq->{'contents'}}) {
1357: next if ($resource->{'type'} ne 'assessment');
1358: my $resource_data = $studentdata->{$resource->{'symb'}};
1359: my $value = '';
1360: foreach my $partnum (@{$resource->{'parts'}}) {
1361: $tries = undef;
1362: $max++;
1363: $performance_length++;
1364: my $symbol = ' '; # default to space
1365: #
1366: if (exists($resource_data->{'resource.'.$partnum.'.solved'})) {
1367: my $status = $resource_data->{'resource.'.$partnum.'.solved'};
1368: if ($status eq 'correct_by_override') {
1369: $symbol = '+';
1370: $sum++;
1371: } elsif ($status eq 'incorrect_by_override') {
1372: $symbol = '-';
1373: } elsif ($status eq 'ungraded_attempted') {
1374: $symbol = '#';
1375: } elsif ($status eq 'incorrect_attempted') {
1376: $symbol = '.';
1377: } elsif ($status eq 'excused') {
1378: $symbol = 'x';
1379: $max--;
1380: } elsif ($status eq 'correct_by_student' &&
1381: exists($resource_data->{'resource.'.$partnum.'.tries'})){
1382: $tries = $resource_data->{'resource.'.$partnum.'.tries'};
1383: if ($tries > 9) {
1384: $symbol = '*';
1385: } elsif ($tries > 0) {
1386: $symbol = $tries;
1387: } else {
1388: $symbol = ' ';
1389: }
1390: $sum++;
1391: } elsif (exists($resource_data->{'resource.'.
1392: $partnum.'.tries'})){
1393: $symbol = '.';
1394: } else {
1395: $symbol = ' ';
1396: }
1397: } else {
1398: # Unsolved. Did they try?
1399: if (exists($resource_data->{'resource.'.$partnum.'.tries'})){
1400: $symbol = '.';
1401: } else {
1402: $symbol = ' ';
1403: }
1404: }
1405: #
1406: if (! defined($tries)) {
1407: $tries = $symbol;
1408: }
1409: push (@TriesData,$tries);
1410: #
1411: if ( ($links eq 'yes' && $symbol ne ' ') ||
1412: ($links eq 'all')) {
1413: if (length($symbol) > 1) {
1414: &Apache::lonnet::logthis('length of symbol "'.$symbol.'" > 1');
1415: }
1416: $symbol = '<a href="/adm/grades'.
1417: '?symb='.&Apache::lonnet::escape($resource->{'symb'}).
1418: '&student='.$student->{'username'}.
1419: '&domain='.$student->{'domain'}.
1420: '&command=submission">'.$symbol.'</a>';
1421: }
1422: $value .= $symbol;
1423: }
1424: $Str .= $value;
1425: }
1426: if ($seq->{'randompick'}) {
1427: $max = $seq->{'randompick'};
1428: }
1429: return ($Str,$performance_length,$sum,$max,\@TriesData);
1430: }
1431:
1432: #######################################################
1433: #######################################################
1434:
1435: =pod
1436:
1437: =item &StudentPerformanceOnSequence()
1438:
1439: Inputs:
1440:
1441: =over 4
1442:
1443: =item $student
1444:
1445: =item $studentdata Hash ref to all student data
1446:
1447: =item $seq Hash ref, the sequence we are working on
1448:
1449: =item $links if defined we will output links to each resource.
1450:
1451: =back
1452:
1453: =cut
1454:
1455: #######################################################
1456: #######################################################
1457: sub StudentPerformanceOnSequence {
1458: my ($student,$studentdata,$seq,$links) = @_;
1459: $links = 'no' if (! defined($links));
1460: my $Str = ''; # final result string
1461: my ($score,$max) = (0,0);
1462: my $performance_length = 0;
1463: my $symbol;
1464: my @ScoreData = ();
1465: my $partscore;
1466: foreach my $resource (@{$seq->{'contents'}}) {
1467: next if ($resource->{'type'} ne 'assessment');
1468: my $resource_data = $studentdata->{$resource->{'symb'}};
1469: foreach my $part (@{$resource->{'parts'}}) {
1470: $partscore = undef;
1471: my $weight = &Apache::lonnet::EXT('resource.'.$part.'.weight',
1472: $resource->{'symb'},
1473: $student->{'domain'},
1474: $student->{'username'},
1475: $student->{'section'});
1476: if (!defined($weight) || ($weight eq '')) {
1477: $weight=1;
1478: }
1479: #
1480: $max += $weight; # see the 'excused' branch below...
1481: $performance_length++; # one character per part
1482: $symbol = ' '; # default to space
1483: #
1484: my $awarded = 0;
1485: if (exists($resource_data->{'resource.'.$part.'.awarded'})) {
1486: $awarded = $resource_data->{'resource.'.$part.'.awarded'};
1487: }
1488: #
1489: $partscore = $weight*$awarded;
1490: $score += $partscore;
1491: $symbol = $weight;
1492: if (length($symbol) > 1) {
1493: $symbol = '*';
1494: }
1495: if (exists($resource_data->{'resource.'.$part.'.solved'})) {
1496: my $status = $resource_data->{'resource.'.$part.'.solved'};
1497: if ($status eq 'excused') {
1498: $symbol = 'x';
1499: $max -= $weight; # Do not count 'excused' problems.
1500: }
1501: } else {
1502: # Unsolved. Did they try?
1503: if (exists($resource_data->{'resource.'.$part.'.tries'})){
1504: $symbol = '.';
1505: } else {
1506: $symbol = ' ';
1507: }
1508: }
1509: #
1510: if ( ($links eq 'yes' && $symbol ne ' ') || ($links eq 'all')) {
1511: $symbol = '<a href="/adm/grades'.
1512: '?symb='.&Apache::lonnet::escape($resource->{'symb'}).
1513: '&student='.$student->{'username'}.
1514: '&domain='.$student->{'domain'}.
1515: '&command=submission">'.$symbol.'</a>';
1516: }
1517: if (! defined($partscore)) {
1518: $partscore = $symbol;
1519: }
1520: push (@ScoreData,$partscore);
1521: }
1522: $Str .= $symbol;
1523: }
1524: return ($Str,$performance_length,$score,$max,\@ScoreData);
1525: }
1526:
1527: #######################################################
1528: #######################################################
1529:
1530: =pod
1531:
1532: =item &CreateLegend()
1533:
1534: This function returns a formatted string containing the legend for the
1535: chart. The legend describes the symbols used to represent grades for
1536: problems.
1537:
1538: =cut
1539:
1540: #######################################################
1541: #######################################################
1542: sub CreateLegend {
1543: my $Str = "<p><pre>".
1544: " 1 correct by student in 1 try\n".
1545: " 7 correct by student in 7 tries\n".
1546: " * correct by student in more than 9 tries\n".
1547: " + correct by hand grading or override\n".
1548: " - incorrect by override\n".
1549: " . incorrect attempted\n".
1550: " # ungraded attempted\n".
1551: " not attempted (blank field)\n".
1552: " x excused".
1553: "</pre><p>";
1554: return $Str;
1555: }
1556:
1557: #######################################################
1558: #######################################################
1559:
1560: =pod
1561:
1562: =back
1563:
1564: =cut
1565:
1566: #######################################################
1567: #######################################################
1568:
1569: 1;
1570:
1571: __END__
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