1: # The LearningOnline Network with CAPA
2: #
3: # $Id: lonstudentassessment.pm,v 1.60 2003/06/17 17:47:54 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: if ($ENV{'form.selectstudent'}) {
144: &Apache::lonstatistics::DisplayClasslist($r);
145: return;
146: }
147: #
148: # Print out the HTML headers for the interface
149: # This also parses the output mode selector
150: # This step must *always* be done.
151: $r->print(&CreateInterface());
152: $r->print('<input type="hidden" name="notfirstrun" value="true" />');
153: $r->print('<input type="hidden" name="sort" value="'.
154: $ENV{'form.sort'}.'" />');
155: $r->rflush();
156: #
157: if (! exists($ENV{'form.notfirstrun'}) && ! $single_student_mode) {
158: return;
159: }
160: #
161: my $initialize = \&html_initialize;
162: my $output_student = \&html_outputstudent;
163: my $finish = \&html_finish;
164: #
165: if ($output_mode eq 'excel') {
166: $initialize = \&excel_initialize;
167: $output_student = \&excel_outputstudent;
168: $finish = \&excel_finish;
169: } elsif ($output_mode eq 'csv') {
170: $initialize = \&csv_initialize;
171: $output_student = \&csv_outputstudent;
172: $finish = \&csv_finish;
173: }
174: #
175: if($c->aborted()) { return ; }
176: #
177: # Determine which students we want to look at
178: my @Students;
179: if ($single_student_mode) {
180: @Students = (&Apache::lonstatistics::current_student());
181: $r->print(&next_and_previous_buttons());
182: $r->rflush();
183: } else {
184: @Students = @Apache::lonstatistics::Students;
185: }
186: #
187: # Perform generic initialization tasks
188: # Since we use lonnet::EXT to retrieve problem weights,
189: # to ensure current data we must clear the caches out.
190: # This makes sure that parameter changes at the student level
191: # are immediately reflected in the chart.
192: &Apache::lonnet::clear_EXT_cache_status();
193: #
194: # Call the initialize routine selected above
195: $initialize->($r);
196: foreach my $student (@Students) {
197: if($c->aborted()) {
198: $finish->($r);
199: return ;
200: }
201: # Call the output_student routine selected above
202: $output_student->($r,$student);
203: }
204: # Call the "finish" routine selected above
205: $finish->($r);
206: #
207: return;
208: }
209:
210: #######################################################
211: #######################################################
212: sub next_and_previous_buttons {
213: my $Str = '';
214: $Str .= '<input type="hidden" name="SelectedStudent" value="'.
215: $ENV{'form.SelectedStudent'}.'" />';
216: #
217: # Build the previous student link
218: my $previous = &Apache::lonstatistics::previous_student();
219: my $previousbutton = '';
220: if (defined($previous)) {
221: my $sname = $previous->{'username'}.':'.$previous->{'domain'};
222: $previousbutton .= '<input type="button" value="'.
223: 'Previous Student ('.
224: $previous->{'username'}.'@'.$previous->{'domain'}.')'.
225: '" onclick="document.Statistics.SelectedStudent.value='.
226: "'".$sname."'".';'.
227: 'document.Statistics.submit();" />';
228: } else {
229: $previousbutton .= '<input type="button" value="'.
230: 'Previous student (none)'.'" />';
231: }
232: #
233: # Build the next student link
234: my $next = &Apache::lonstatistics::next_student();
235: my $nextbutton = '';
236: if (defined($next)) {
237: my $sname = $next->{'username'}.':'.$next->{'domain'};
238: $nextbutton .= '<input type="button" value="'.
239: 'Next Student ('.
240: $next->{'username'}.'@'.$next->{'domain'}.')'.
241: '" onclick="document.Statistics.SelectedStudent.value='.
242: "'".$sname."'".';'.
243: 'document.Statistics.submit();" />';
244: } else {
245: $nextbutton .= '<input type="button" value="'.
246: 'Next student (none)'.'" />';
247: }
248: #
249: # Build the 'all students' button
250: my $all = '';
251: $all .= '<input type="button" value="All Students" '.
252: '" onclick="document.Statistics.SelectedStudent.value='.
253: "''".';'.'document.Statistics.submit();" />';
254: $Str .= $previousbutton.(' 'x5).$all.(' 'x5).$nextbutton;
255: return $Str;
256: }
257:
258: #######################################################
259: #######################################################
260:
261: sub get_student_fields_to_show {
262: my @to_show = @Apache::lonstatistics::SelectedStudentData;
263: foreach (@to_show) {
264: if ($_ eq 'all') {
265: @to_show = @Apache::lonstatistics::StudentDataOrder;
266: last;
267: }
268: }
269: return @to_show;
270: }
271:
272: #######################################################
273: #######################################################
274:
275: =pod
276:
277: =item &CreateInterface()
278:
279: Called by &BuildStudentAssessmentPage to create the top part of the
280: page which displays the chart.
281:
282: Inputs: None
283:
284: Returns: A string containing the HTML for the headers and top table for
285: the chart page.
286:
287: =cut
288:
289: #######################################################
290: #######################################################
291: sub CreateInterface {
292: my $Str = '';
293: # $Str .= &CreateLegend();
294: $Str .= '<table cellspacing="5">'."\n";
295: $Str .= '<tr>';
296: $Str .= '<td align="center"><b>Sections</b></td>';
297: $Str .= '<td align="center"><b>Student Data</b></td>';
298: $Str .= '<td align="center"><b>Enrollment Status</b></td>';
299: $Str .= '<td align="center"><b>Sequences and Folders</b></td>';
300: $Str .= '<td align="center"><b>Output Format</b>'.
301: &Apache::loncommon::help_open_topic("Chart_Output_Formats").
302: '</td>';
303: $Str .= '<td align="center"><b>Output Data</b>'.
304: &Apache::loncommon::help_open_topic("Chart_Output_Data").
305: '</td>';
306: $Str .= '</tr>'."\n";
307: #
308: $Str .= '<tr><td align="center">'."\n";
309: $Str .= &Apache::lonstatistics::SectionSelect('Section','multiple',5);
310: $Str .= '</td><td align="center">';
311: my $only_seq_with_assessments = sub {
312: my $s=shift;
313: if ($s->{'num_assess'} < 1) {
314: return 0;
315: } else {
316: return 1;
317: }
318: };
319: $Str .= &Apache::lonstatistics::StudentDataSelect('StudentData','multiple',
320: 5,undef);
321: $Str .= '</td><td>'."\n";
322: $Str .= &Apache::lonhtmlcommon::StatusOptions(undef,undef,5);
323: $Str .= '</td><td>'."\n";
324: $Str .= &Apache::lonstatistics::MapSelect('Maps','multiple,all',5,
325: $only_seq_with_assessments);
326: $Str .= '</td><td>'."\n";
327: $Str .= &CreateAndParseOutputSelector();
328: $Str .= '</td><td>'."\n";
329: $Str .= &CreateAndParseOutputDataSelector();
330: $Str .= '</td></tr>'."\n";
331: $Str .= '</table>'."\n";
332: $Str .= '<input type="submit" value="Generate Chart" />';
333: $Str .= ' 'x5;
334: $Str .= '<input type="submit" name="selectstudent" '.
335: 'value="Select One Student" />';
336: $Str .= ' 'x5;
337: $Str .= '<input type="submit" name="ClearCache" value="Clear Caches" />';
338: $Str .= ' 'x5.'<br />';
339: return $Str;
340: }
341:
342: #######################################################
343: #######################################################
344:
345: =pod
346:
347: =item &CreateAndParseOutputSelector()
348:
349: =cut
350:
351: #######################################################
352: #######################################################
353: my @OutputOptions =
354: ({ name => 'HTML, with links',
355: value => 'html, with links',
356: description => 'Output HTML with each symbol linked to the problem '.
357: 'which generated it.',
358: mode => 'html',
359: show_links => 'yes',
360: },
361: { name => 'HTML, with all links',
362: value => 'html, with all links',
363: description => 'Output HTML with each symbol linked to the problem '.
364: 'which generated it. '.
365: 'This includes links for unattempted problems.',
366: mode => 'html',
367: show_links => 'all',
368: },
369: { name => 'HTML, without links',
370: value => 'html, without links',
371: description => 'Output HTML. By not including links, the size of the'.
372: ' web page is greatly reduced. If your browser crashes on the '.
373: 'full display, try this.',
374: mode => 'html',
375: show_links => 'no',
376: },
377: { name => 'Excel',
378: value => 'excel',
379: description => 'Output an Excel file (compatable with Excel 95).',
380: mode => 'excel',
381: show_links => 'no',
382: },
383: { name => 'CSV',
384: value => 'csv',
385: description => 'Output a comma seperated values file suitable for '.
386: 'import into a spreadsheet program. Using this method as opposed '.
387: 'to Excel output allows you to organize your data before importing'.
388: ' it into a spreadsheet program.',
389: mode => 'csv',
390: show_links => 'no',
391: },
392: );
393:
394: sub OutputDescriptions {
395: my $Str = '';
396: $Str .= "<h2>Output Formats</h2>\n";
397: $Str .= "<dl>\n";
398: foreach my $outputmode (@OutputOptions) {
399: $Str .=" <dt>".$outputmode->{'name'}."</dt>\n";
400: $Str .=" <dd>".$outputmode->{'description'}."</dd>\n";
401: }
402: $Str .= "</dl>\n";
403: return $Str;
404: }
405:
406: sub CreateAndParseOutputSelector {
407: my $Str = '';
408: my $elementname = 'chartoutputmode';
409: #
410: # Format for output options is 'mode, restrictions';
411: my $selected = 'html, without links';
412: if (exists($ENV{'form.'.$elementname})) {
413: if (ref($ENV{'form.'.$elementname} eq 'ARRAY')) {
414: $selected = $ENV{'form.'.$elementname}->[0];
415: } else {
416: $selected = $ENV{'form.'.$elementname};
417: }
418: }
419: #
420: # Set package variables describing output mode
421: $show_links = 'no';
422: $output_mode = 'html';
423: foreach my $option (@OutputOptions) {
424: next if ($option->{'value'} ne $selected);
425: $output_mode = $option->{'mode'};
426: $show_links = $option->{'show_links'};
427: }
428:
429: #
430: # Build the form element
431: $Str = qq/<select size="5" name="$elementname">/;
432: foreach my $option (@OutputOptions) {
433: $Str .= "\n".' <option value="'.$option->{'value'}.'"';
434: $Str .= " selected " if ($option->{'value'} eq $selected);
435: $Str .= ">".$option->{'name'}."<\/option>";
436: }
437: $Str .= "\n</select>";
438: return $Str;
439: }
440:
441: ##
442: ## Data selector stuff
443: ##
444: my @OutputDataOptions =
445: (
446: { name => 'Scores',
447: base => 'scores',
448: value => 'scores',
449: shortdesc => 'Score on each Problem Part',
450: longdesc =>'The students score on each problem part, computed as'.
451: 'the part weight * part awarded',
452: },
453: { name => 'Scores Sum',
454: base => 'scores',
455: value => 'sum only',
456: shortdesc => 'Sum of Scores on each Problem Part',
457: longdesc =>'The total of the scores of the student on each problem'.
458: ' part in the sequences or folders selected.',
459: },
460: { name => 'Scores Sum & Maximums',
461: base => 'scores',
462: value => 'sum and total',
463: shortdesc => 'Total Score and Maximum Possible for each '.
464: 'Sequence or Folder',
465: longdesc => 'The score of each student as well as the '.
466: ' maximum possible on each Sequence or Folder.',
467: },
468: { name => 'Scores Summary Table Only',
469: base => 'scores',
470: value => 'final table scores',
471: shortdesc => 'Summary of Scores',
472: longdesc => 'The average score on each sequence or folder for the '.
473: 'selected students.',
474: },
475: { name =>'Tries',
476: base =>'tries',
477: value => 'tries',
478: shortdesc => 'Number of Tries before success on each Problem Part',
479: longdesc =>'The number of tries before success on each problem part.',
480: },
481: { name =>'Parts Correct',
482: base =>'tries',
483: value => 'parts correct',
484: shortdesc => 'Number of Problem Parts completed successfully.',
485: longdesc => 'The Number of Problem Parts completed successfully'.
486: ' on each sequence or folder.',
487: },
488: { name =>'Parts Correct & Maximums',
489: base =>'tries',
490: value => 'parts correct total',
491: shortdesc => 'Number of Problem Parts completed successfully.',
492: longdesc => 'The Number of Problem Parts completed successfully and '.
493: 'the maximum possible for each student',
494: },
495: { name => 'Parts Summary Table Only',
496: base => 'tries',
497: value => 'final table parts',
498: shortdesc => 'Summary of Parts Correct',
499: longdesc => 'A summary table of the average number of problem parts '.
500: 'students were able to get correct on each sequence.',
501: },
502: );
503:
504: sub HTMLifyOutputDataDescriptions {
505: my $Str = '';
506: $Str .= "<h2>Output Data</h2>\n";
507: $Str .= "<dl>\n";
508: foreach my $option (@OutputDataOptions) {
509: $Str .= ' <dt>'.$option->{'name'}.'</dt>';
510: $Str .= '<dd>'.$option->{'longdesc'}.'</dd>'."\n";
511: }
512: $Str .= "</dl>\n";
513: return $Str;
514: }
515:
516: sub CreateAndParseOutputDataSelector {
517: my $Str = '';
518: my $elementname = 'chartoutputdata';
519: #
520: my $selected = 'scores';
521: if (exists($ENV{'form.'.$elementname})) {
522: if (ref($ENV{'form.'.$elementname} eq 'ARRAY')) {
523: $selected = $ENV{'form.'.$elementname}->[0];
524: } else {
525: $selected = $ENV{'form.'.$elementname};
526: }
527: }
528: #
529: $data = 'scores';
530: foreach my $option (@OutputDataOptions) {
531: if ($option->{'value'} eq $selected) {
532: $data = $option->{'value'};
533: $base = $option->{'base'};
534: $datadescription = $option->{'shortdesc'};
535: }
536: }
537: #
538: # Build the form element
539: $Str = qq/<select size="5" name="$elementname">/;
540: foreach my $option (@OutputDataOptions) {
541: $Str .= "\n".' <option value="'.$option->{'value'}.'"';
542: $Str .= " selected " if ($option->{'value'} eq $data);
543: $Str .= ">".$option->{'name'}."<\/option>";
544: }
545: $Str .= "\n</select>";
546: return $Str;
547:
548: }
549:
550: #######################################################
551: #######################################################
552:
553: =pod
554:
555: =head2 HTML output routines
556:
557: =item &html_initialize($r)
558:
559: Create labels for the columns of student data to show.
560:
561: =item &html_outputstudent($r,$student)
562:
563: Return a line of the chart for a student.
564:
565: =item &html_finish($r)
566:
567: =cut
568:
569: #######################################################
570: #######################################################
571: {
572: my $padding;
573: my $count;
574:
575: my $nodata_count; # The number of students for which there is no data
576: my %prog_state; # progress state used by loncommon PrgWin routines
577:
578: sub html_initialize {
579: my ($r) = @_;
580: #
581: $padding = ' 'x3;
582: $count = 0;
583: $nodata_count = 0;
584: #
585: $r->print("<h3>".$ENV{'course.'.$ENV{'request.course.id'}.'.description'}.
586: " ".localtime(time)."</h3>");
587:
588: if ($data !~ /^final table/) {
589: $r->print("<h3>".$datadescription."</h3>");
590: }
591: #
592: # Set up progress window for 'final table' display only
593: if ($data =~ /^final table/) {
594: my $studentcount = scalar(@Apache::lonstatistics::Students);
595: %prog_state=&Apache::lonhtmlcommon::Create_PrgWin
596: ($r,'Summary Table Status',
597: 'Summary Table Compilation Progress', $studentcount);
598: }
599: my $Str = "<pre>\n";
600: # First, the @StudentData fields need to be listed
601: my @to_show = &get_student_fields_to_show();
602: foreach my $field (@to_show) {
603: my $title=$Apache::lonstatistics::StudentData{$field}->{'title'};
604: my $base =$Apache::lonstatistics::StudentData{$field}->{'base_width'};
605: my $width=$Apache::lonstatistics::StudentData{$field}->{'width'};
606: $Str .= $title.' 'x($width-$base).$padding;
607: }
608: # Now the selected sequences need to be listed
609: foreach my $sequence (&Apache::lonstatistics::Sequences_with_Assess()){
610: my $title = $sequence->{'title'};
611: my $base = $sequence->{'base_width'};
612: my $width = $sequence->{'width'};
613: $Str .= $title.' 'x($width-$base).$padding;
614: }
615: $Str .= "total</pre>\n";
616: $Str .= "<pre>";
617: #
618: # Check for suppression of output
619: if ($data =~ /^final table/) {
620: $Str = '';
621: }
622: $r->print($Str);
623: $r->rflush();
624: return;
625: }
626:
627: sub html_outputstudent {
628: my ($r,$student) = @_;
629: my $Str = '';
630: #
631: if($count++ % 5 == 0 && $count > 0 && $data !~ /^final table/) {
632: $r->print("</pre><pre>");
633: }
634: # First, the @StudentData fields need to be listed
635: my @to_show = &get_student_fields_to_show();
636: foreach my $field (@to_show) {
637: my $title=$student->{$field};
638: my $base = length($title);
639: my $width=$Apache::lonstatistics::StudentData{$field}->{'width'};
640: $Str .= $title.' 'x($width-$base).$padding;
641: }
642: # Get ALL the students data
643: my %StudentsData;
644: my @tmp = &Apache::loncoursedata::get_current_state
645: ($student->{'username'},$student->{'domain'},undef,
646: $ENV{'request.course.id'});
647: if ((scalar @tmp > 0) && ($tmp[0] !~ /^error:/)) {
648: %StudentsData = @tmp;
649: }
650: if (scalar(@tmp) < 1) {
651: $nodata_count++;
652: return if ($data =~ /^final table/);
653: $Str .= '<font color="blue">No Course Data</font>'."\n";
654: $r->print($Str);
655: $r->rflush();
656: return;
657: }
658: #
659: # By sequence build up the data
660: my $studentstats;
661: my $PerformanceStr = '';
662: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
663: my ($performance,$performance_length,$score,$seq_max,$rawdata);
664: if ($base eq 'tries') {
665: ($performance,$performance_length,$score,$seq_max,$rawdata) =
666: &StudentTriesOnSequence($student,\%StudentsData,
667: $seq,$show_links);
668: } else {
669: ($performance,$performance_length,$score,$seq_max,$rawdata) =
670: &StudentPerformanceOnSequence($student,\%StudentsData,
671: $seq,$show_links);
672: }
673: my $ratio = sprintf("%3d",$score).'/'.sprintf("%3d",$seq_max);
674: #
675: if ($data eq 'sum and total' || $data eq 'parts correct total') {
676: $performance = $ratio;
677: $performance .= ' 'x($seq->{'width'}-length($ratio));
678: } elsif ($data eq 'sum only' || $data eq 'parts correct') {
679: $performance = $score;
680: $performance .= ' 'x($seq->{'width'}-length($score));
681: } else {
682: # Pad with extra spaces
683: $performance .= ' 'x($seq->{'width'}-$performance_length-
684: length($ratio)
685: ).$ratio;
686: }
687: #
688: $Str .= $performance.$padding;
689: #
690: $studentstats->{$seq->{'symb'}}->{'score'}= $score;
691: $studentstats->{$seq->{'symb'}}->{'max'} = $seq_max;
692: }
693: #
694: # Total it up and store the statistics info.
695: my ($score,$max) = (0,0);
696: while (my ($symb,$seq_stats) = each (%{$studentstats})) {
697: $Statistics->{$symb}->{'score'} += $seq_stats->{'score'};
698: if ($Statistics->{$symb}->{'max'} < $seq_stats->{'max'}) {
699: $Statistics->{$symb}->{'max'} = $seq_stats->{'max'};
700: }
701: $score += $seq_stats->{'score'};
702: $max += $seq_stats->{'max'};
703: }
704: $Str .= ' '.' 'x(length($max)-length($score)).$score.'/'.$max;
705: $Str .= " \n";
706: #
707: # Check for suppressed output and update the progress window if so...
708: if ($data =~ /^final table/) {
709: $Str = '';
710: &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
711: 'last student');
712: }
713: #
714: $r->print($Str);
715: #
716: $r->rflush();
717: return;
718: }
719:
720: sub html_finish {
721: my ($r) = @_;
722: #
723: # Check for suppressed output and close the progress window if so
724: if ($data =~ /^final table/) {
725: &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
726: } else {
727: $r->print("</pre>\n");
728: }
729: if ($single_student_mode) {
730: $r->print(&SingleStudentTotal());
731: } else {
732: $r->print(&StudentAverageTotal());
733: }
734: $r->rflush();
735: return;
736: }
737:
738: sub StudentAverageTotal {
739: my $Str = "<h3>Summary Tables</h3>\n";
740: my $num_students = scalar(@Apache::lonstatistics::Students);
741: my $total_ave = 0;
742: my $total_max = 0;
743: $Str .= '<table border=2 cellspacing="1">'."\n";
744: $Str .= "<tr><th>Title</th><th>Average</th><th>Maximum</th></tr>\n";
745: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
746: my $ave;
747: if ($num_students > $nodata_count) {
748: $ave = int(100*($Statistics->{$seq->{'symb'}}->{'score'}/
749: ($num_students-$nodata_count)))/100;
750: } else {
751: $ave = 0;
752: }
753: $total_ave += $ave;
754: my $max = $Statistics->{$seq->{'symb'}}->{'max'};
755: $total_max += $max;
756: if ($ave == 0) {
757: $ave = "0.00";
758: }
759: $ave .= ' ';
760: $max .= ' ';
761: $Str .= '<tr><td>'.$seq->{'title'}.'</td>'.
762: '<td align="right">'.$ave.'</td>'.
763: '<td align="right">'.$max.'</td></tr>'."\n";
764: }
765: $total_ave = int(100*$total_ave)/100; # only two digit
766: $Str .= "</table>\n";
767: $Str .= '<table border=2 cellspacing="1">'."\n";
768: $Str .= '<tr><th>Number of Students</th><th>Average</th>'.
769: "<th>Maximum</th></tr>\n";
770: $Str .= '<tr><td>'.($num_students-$nodata_count).'</td>'.
771: '<td>'.$total_ave.'</td><td>'.$total_max.'</td>';
772: $Str .= "</table>\n";
773: return $Str;
774: }
775:
776: sub SingleStudentTotal {
777: my $student = &Apache::lonstatistics::current_student();
778: my $Str = "<h3>Summary table for ".$student->{'fullname'}." ".
779: $student->{'username'}.'@'.$student->{'domain'}."</h3>\n";
780: $Str .= '<table border=2 cellspacing="1">'."\n";
781: $Str .=
782: "<tr><th>Sequence or Folder</th><th>Score</th><th>Maximum</th></tr>\n";
783: my $total = 0;
784: my $total_max = 0;
785: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
786: my $value = $Statistics->{$seq->{'symb'}}->{'score'};
787: my $max = $Statistics->{$seq->{'symb'}}->{'max'};
788: $Str .= '<tr><td>'.$seq->{'title'}.'</td>'.
789: '<td align="right">'.$value.'</td>'.
790: '<td align="right">'.$max.'</td></tr>'."\n";
791: $total += $value;
792: $total_max +=$max;
793: }
794: $Str .= '<tr><td><b>Total</b></td>'.
795: '<td align="right">'.$total.'</td>'.
796: '<td align="right">'.$total_max."</td></tr>\n";
797: $Str .= "</table>\n";
798: return $Str;
799: }
800:
801: }
802:
803: #######################################################
804: #######################################################
805:
806: =pod
807:
808: =head2 EXCEL subroutines
809:
810: =item &excel_initialize($r)
811:
812: =item &excel_outputstudent($r,$student)
813:
814: =item &excel_finish($r)
815:
816: =cut
817:
818: #######################################################
819: #######################################################
820: {
821:
822: my $excel_sheet;
823: my $excel_workbook;
824:
825: my $filename;
826: my $rows_output;
827: my $cols_output;
828:
829: my %prog_state; # progress window state
830: my $request_aborted;
831:
832: sub excel_initialize {
833: my ($r) = @_;
834: #
835: $request_aborted = undef;
836: my $total_columns = scalar(&get_student_fields_to_show());
837: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
838: # Add 2 because we need a 'sum' and 'total' column for each
839: $total_columns += $seq->{'num_assess_parts'}+2;
840: }
841: if ($data eq 'tries' && $total_columns > 255) {
842: $r->print(<<END);
843: <h2>Unable to Complete Request</h2>
844: <p>
845: LON-CAPA is unable to produce your Excel spreadsheet because your selections
846: will result in more than 255 columns. Excel allows only 255 columns in a
847: spreadsheet.
848: </p><p>
849: You may consider reducing the number of <b>Sequences or Folders</b> you
850: have selected.
851: </p><p>
852: LON-CAPA can produce <b>CSV</b> files of this data or Excel files of the
853: summary data (<b>Parts Correct</b> or <b>Parts Correct & Totals</b>).
854: </p>
855: END
856: $request_aborted = 1;
857: }
858: if ($data eq 'scores' && $total_columns > 255) {
859: $r->print(<<END);
860: <h2>Unable to Complete Request</h2>
861: <p>
862: LON-CAPA is unable to produce your Excel spreadsheet because your selections
863: will result in more than 255 columns. Excel allows only 255 columns in a
864: spreadsheet.
865: </p><p>
866: You may consider reducing the number of <b>Sequences or Folders</b> you
867: have selected.
868: </p><p>
869: LON-CAPA can produce <b>CSV</b> files of this data or Excel files of the
870: summary data (<b>Scores Sum</b> or <b>Scores Sum & Totals</b>).
871: </p>
872: END
873: $request_aborted = 1;
874: }
875: if ($data =~ /^final table/) {
876: $r->print(<<END);
877: <h2>Unable to Complete Request</h2>
878: <p>
879: The <b>Summary Table (Scores)</b> option is not available for non-HTML output.
880: </p>
881: END
882: $request_aborted = 1;
883: }
884: return if ($request_aborted);
885: #
886: $filename = '/prtspool/'.
887: $ENV{'user.name'}.'_'.$ENV{'user.domain'}.'_'.
888: time.'_'.rand(1000000000).'.xls';
889: #
890: $excel_workbook = undef;
891: $excel_sheet = undef;
892: #
893: $rows_output = 0;
894: $cols_output = 0;
895: #
896: # Create sheet
897: $excel_workbook = Spreadsheet::WriteExcel->new('/home/httpd'.$filename);
898: #
899: # Check for errors
900: if (! defined($excel_workbook)) {
901: $r->log_error("Error creating excel spreadsheet $filename: $!");
902: $r->print("Problems creating new Excel file. ".
903: "This error has been logged. ".
904: "Please alert your LON-CAPA administrator");
905: return ;
906: }
907: #
908: # The excel spreadsheet stores temporary data in files, then put them
909: # together. If needed we should be able to disable this (memory only).
910: # The temporary directory must be specified before calling 'addworksheet'.
911: # File::Temp is used to determine the temporary directory.
912: $excel_workbook->set_tempdir($Apache::lonnet::tmpdir);
913: #
914: # Add a worksheet
915: my $sheetname = $ENV{'course.'.$ENV{'request.course.id'}.'.description'};
916: if (length($sheetname) > 31) {
917: $sheetname = substr($sheetname,0,31);
918: }
919: $excel_sheet = $excel_workbook->addworksheet($sheetname);
920: #
921: # Put the course description in the header
922: $excel_sheet->write($rows_output,$cols_output++,
923: $ENV{'course.'.$ENV{'request.course.id'}.'.description'});
924: $cols_output += 3;
925: #
926: # Put a description of the sections listed
927: my $sectionstring = '';
928: my @Sections = @Apache::lonstatistics::SelectedSections;
929: if (scalar(@Sections) > 1) {
930: if (scalar(@Sections) > 2) {
931: my $last = pop(@Sections);
932: $sectionstring = "Sections ".join(', ',@Sections).', and '.$last;
933: } else {
934: $sectionstring = "Sections ".join(' and ',@Sections);
935: }
936: } else {
937: if ($Sections[0] eq 'all') {
938: $sectionstring = "All sections";
939: } else {
940: $sectionstring = "Section ".$Sections[0];
941: }
942: }
943: $excel_sheet->write($rows_output,$cols_output++,$sectionstring);
944: $cols_output += scalar(@Sections);
945: #
946: # Put the date in there too
947: $excel_sheet->write($rows_output++,$cols_output++,
948: 'Compiled on '.localtime(time));
949: #
950: $cols_output = 0;
951: $excel_sheet->write($rows_output++,$cols_output++,$datadescription);
952: #
953: if ($data eq 'tries' || $data eq 'scores') {
954: $rows_output++;
955: }
956: #
957: # Add the student headers
958: $cols_output = 0;
959: foreach my $field (&get_student_fields_to_show()) {
960: $excel_sheet->write($rows_output,$cols_output++,$field);
961: }
962: my $row_offset = 0;
963: if ($data eq 'tries' || $data eq 'scores') {
964: $row_offset = -1;
965: }
966: #
967: # Add the remaining column headers
968: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
969: $excel_sheet->write($rows_output+$row_offset,
970: $cols_output,$seq->{'title'});
971: if ($data eq 'tries' || $data eq 'scores') {
972: foreach my $res (@{$seq->{'contents'}}) {
973: next if ($res->{'type'} ne 'assessment');
974: if (scalar(@{$res->{'parts'}}) > 1) {
975: foreach my $part (@{$res->{'parts'}}) {
976: $excel_sheet->write($rows_output,
977: $cols_output++,
978: $res->{'title'}.' part '.$part);
979: }
980: } else {
981: $excel_sheet->write($rows_output,
982: $cols_output++,
983: $res->{'title'});
984: }
985: }
986: $excel_sheet->write($rows_output,$cols_output++,'score');
987: $excel_sheet->write($rows_output,$cols_output++,'maximum');
988: } elsif ($data eq 'sum and total' || $data eq 'parts correct total') {
989: $excel_sheet->write($rows_output+1,$cols_output,'score');
990: $excel_sheet->write($rows_output+1,$cols_output+1,'maximum');
991: $cols_output += 2;
992: } else {
993: $cols_output++;
994: }
995: }
996: #
997: # Bookkeeping
998: if ($data eq 'sum and total' || $data eq 'parts correct total') {
999: $rows_output += 2;
1000: } else {
1001: $rows_output += 1;
1002: }
1003: #
1004: # Output a row for MAX
1005: $cols_output = 0;
1006: foreach my $field (&get_student_fields_to_show()) {
1007: if ($field eq 'username' || $field eq 'fullname' ||
1008: $field eq 'id') {
1009: $excel_sheet->write($rows_output,$cols_output++,'Maximum');
1010: } else {
1011: $excel_sheet->write($rows_output,$cols_output++,'');
1012: }
1013: }
1014: #
1015: # Add the maximums for each sequence or assessment
1016: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
1017: my $weight;
1018: my $max = 0;
1019: foreach my $resource (@{$seq->{'contents'}}) {
1020: next if ($resource->{'type'} ne 'assessment');
1021: foreach my $part (@{$resource->{'parts'}}) {
1022: $weight = 1;
1023: if ($base eq 'scores') {
1024: $weight = &Apache::lonnet::EXT
1025: ('resource.'.$part.'.weight',$resource->{'symb'},
1026: undef,undef,undef);
1027: if (!defined($weight) || ($weight eq '')) {
1028: $weight=1;
1029: }
1030: }
1031: if ($data eq 'scores') {
1032: $excel_sheet->write($rows_output,$cols_output++,$weight);
1033: } elsif ($data eq 'tries') {
1034: $excel_sheet->write($rows_output,$cols_output++,'');
1035: }
1036: $max += $weight;
1037: }
1038: }
1039: if (! ($data eq 'sum only' || $data eq 'parts correct')) {
1040: $excel_sheet->write($rows_output,$cols_output++,'');
1041: }
1042: $excel_sheet->write($rows_output,$cols_output++,$max);
1043: }
1044: $rows_output++;
1045: #
1046: # Let the user know what we are doing
1047: my $studentcount = scalar(@Apache::lonstatistics::Students);
1048: $r->print("<h1>Compiling Excel spreadsheet for ".
1049: $studentcount.' student');
1050: $r->print('s') if ($studentcount > 1);
1051: $r->print("</h1>\n");
1052: $r->rflush();
1053: #
1054: # Initialize progress window
1055: %prog_state=&Apache::lonhtmlcommon::Create_PrgWin
1056: ($r,'Excel File Compilation Status',
1057: 'Excel File Compilation Progress', $studentcount);
1058: #
1059: return;
1060: }
1061:
1062: sub excel_outputstudent {
1063: my ($r,$student) = @_;
1064: return if ($request_aborted);
1065: return if (! defined($excel_sheet));
1066: $cols_output=0;
1067: #
1068: # Write out student data
1069: my @to_show = &get_student_fields_to_show();
1070: foreach my $field (@to_show) {
1071: $excel_sheet->write($rows_output,$cols_output++,$student->{$field});
1072: }
1073: #
1074: # Get student assessment data
1075: my %StudentsData;
1076: my @tmp = &Apache::loncoursedata::get_current_state($student->{'username'},
1077: $student->{'domain'},
1078: undef,
1079: $ENV{'request.course.id'});
1080: if ((scalar @tmp > 0) && ($tmp[0] !~ /^error:/)) {
1081: %StudentsData = @tmp;
1082: }
1083: #
1084: # Write out sequence scores and totals data
1085: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
1086: my ($performance,$performance_length,$score,$seq_max,$rawdata);
1087: if ($base eq 'tries') {
1088: ($performance,$performance_length,$score,$seq_max,$rawdata) =
1089: &StudentTriesOnSequence($student,\%StudentsData,
1090: $seq,'no');
1091: } else {
1092: ($performance,$performance_length,$score,$seq_max,$rawdata) =
1093: &StudentPerformanceOnSequence($student,\%StudentsData,
1094: $seq,'no');
1095: }
1096: if ($data eq 'tries' || $data eq 'scores') {
1097: foreach my $value (@$rawdata) {
1098: $excel_sheet->write($rows_output,$cols_output++,$value);
1099: }
1100: $excel_sheet->write($rows_output,$cols_output++,$score);
1101: $excel_sheet->write($rows_output,$cols_output++,$seq_max);
1102: } elsif ($data eq 'sum and total' || $data eq 'sum only' ||
1103: $data eq 'parts correct' || $data eq 'parts correct total') {
1104: $excel_sheet->write($rows_output,$cols_output++,$score);
1105: }
1106: if ($data eq 'sum and total' || $data eq 'parts correct total') {
1107: $excel_sheet->write($rows_output,$cols_output++,$seq_max);
1108: }
1109: }
1110: #
1111: # Bookkeeping
1112: $rows_output++;
1113: $cols_output=0;
1114: #
1115: # Update the progress window
1116: &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,'last student');
1117: return;
1118: }
1119:
1120: sub excel_finish {
1121: my ($r) = @_;
1122: return if ($request_aborted);
1123: return if (! defined($excel_sheet));
1124: #
1125: # Write the excel file
1126: $excel_workbook->close();
1127: my $c = $r->connection();
1128: #
1129: return if($c->aborted());
1130: #
1131: # Close the progress window
1132: &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
1133: #
1134: # Tell the user where to get their excel file
1135: $r->print('<br />'.
1136: '<a href="'.$filename.'">Your Excel spreadsheet.</a>'."\n");
1137: $r->rflush();
1138: return;
1139: }
1140:
1141: }
1142: #######################################################
1143: #######################################################
1144:
1145: =pod
1146:
1147: =head2 CSV output routines
1148:
1149: =item &csv_initialize($r)
1150:
1151: =item &csv_outputstudent($r,$student)
1152:
1153: =item &csv_finish($r)
1154:
1155: =cut
1156:
1157: #######################################################
1158: #######################################################
1159: {
1160:
1161: my $outputfile;
1162: my $filename;
1163: my $request_aborted;
1164: my %prog_state; # progress window state
1165:
1166: sub csv_initialize{
1167: my ($r) = @_;
1168: #
1169: # Clean up
1170: $filename = undef;
1171: $outputfile = undef;
1172: undef(%prog_state);
1173: #
1174: # Deal with unimplemented requests
1175: $request_aborted = undef;
1176: if ($data =~ /final table/) {
1177: $r->print(<<END);
1178: <h2>Unable to Complete Request</h2>
1179: <p>
1180: The <b>Summary Table (Scores)</b> option is not available for non-HTML output.
1181: </p>
1182: END
1183: $request_aborted = 1;
1184: }
1185: return if ($request_aborted);
1186:
1187: #
1188: # Open a file
1189: $filename = '/prtspool/'.
1190: $ENV{'user.name'}.'_'.$ENV{'user.domain'}.'_'.
1191: time.'_'.rand(1000000000).'.csv';
1192: unless ($outputfile = Apache::File->new('>/home/httpd'.$filename)) {
1193: $r->log_error("Couldn't open $filename for output $!");
1194: $r->print("Problems occured in writing the csv file. ".
1195: "This error has been logged. ".
1196: "Please alert your LON-CAPA administrator.");
1197: $outputfile = undef;
1198: }
1199: #
1200: # Datestamp
1201: my $description = $ENV{'course.'.$ENV{'request.course.id'}.'.description'};
1202: print $outputfile '"'.&Apache::loncommon::csv_translate($description).'",'.
1203: '"'.&Apache::loncommon::csv_translate(scalar(localtime(time))).'"'.
1204: "\n";
1205: #
1206: # Print out the headings
1207: my $Str = '';
1208: my $Str2 = undef;
1209: foreach my $field (&get_student_fields_to_show()) {
1210: if ($data eq 'sum only') {
1211: $Str .= '"'.&Apache::loncommon::csv_translate($field).'",';
1212: } elsif ($data eq 'sum and total' || $data eq 'parts correct total') {
1213: $Str .= '"",'; # first row empty on the student fields
1214: $Str2 .= '"'.&Apache::loncommon::csv_translate($field).'",';
1215: } elsif ($data eq 'scores' || $data eq 'tries' ||
1216: $data eq 'parts correct') {
1217: $Str .= '"",';
1218: $Str2 .= '"'.&Apache::loncommon::csv_translate($field).'",';
1219: }
1220: }
1221: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
1222: if ($data eq 'sum only' || $data eq 'parts correct') {
1223: $Str .= '"'.&Apache::loncommon::csv_translate($seq->{'title'}).
1224: '",';
1225: } elsif ($data eq 'sum and total' || $data eq 'parts correct total') {
1226: $Str .= '"'.&Apache::loncommon::csv_translate($seq->{'title'}).
1227: '","",';
1228: $Str2 .= '"score","total possible",';
1229: } elsif ($data eq 'scores' || $data eq 'tries') {
1230: $Str .= '"'.&Apache::loncommon::csv_translate($seq->{'title'}).
1231: '",';
1232: $Str .= '"",'x($seq->{'num_assess_parts'}-1+2);
1233: foreach my $res (@{$seq->{'contents'}}) {
1234: next if ($res->{'type'} ne 'assessment');
1235: foreach my $part (@{$res->{'parts'}}) {
1236: $Str2 .= '"'.&Apache::loncommon::csv_translate($res->{'title'}.', Part '.$part).'",';
1237: }
1238: }
1239: $Str2 .= '"score","total possible",';
1240: }
1241: }
1242: chop($Str);
1243: $Str .= "\n";
1244: print $outputfile $Str;
1245: if (defined($Str2)) {
1246: chop($Str2);
1247: $Str2 .= "\n";
1248: print $outputfile $Str2;
1249: }
1250: #
1251: # Initialize progress window
1252: my $studentcount = scalar(@Apache::lonstatistics::Students);
1253: %prog_state=&Apache::lonhtmlcommon::Create_PrgWin
1254: ($r,'CSV File Compilation Status',
1255: 'CSV File Compilation Progress', $studentcount);
1256: return;
1257: }
1258:
1259: sub csv_outputstudent {
1260: my ($r,$student) = @_;
1261: return if ($request_aborted);
1262: return if (! defined($outputfile));
1263: my $Str = '';
1264: #
1265: # Output student fields
1266: my @to_show = &get_student_fields_to_show();
1267: foreach my $field (@to_show) {
1268: $Str .= '"'.&Apache::loncommon::csv_translate($student->{$field}).'",';
1269: }
1270: #
1271: # Get student assessment data
1272: my %StudentsData;
1273: my @tmp = &Apache::loncoursedata::get_current_state($student->{'username'},
1274: $student->{'domain'},
1275: undef,
1276: $ENV{'request.course.id'});
1277: if ((scalar @tmp > 0) && ($tmp[0] !~ /^error:/)) {
1278: %StudentsData = @tmp;
1279: }
1280: #
1281: # Output performance data
1282: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
1283: my ($performance,$performance_length,$score,$seq_max,$rawdata);
1284: if ($base eq 'tries') {
1285: ($performance,$performance_length,$score,$seq_max,$rawdata) =
1286: &StudentTriesOnSequence($student,\%StudentsData,
1287: $seq,'no');
1288: } else {
1289: ($performance,$performance_length,$score,$seq_max,$rawdata) =
1290: &StudentPerformanceOnSequence($student,\%StudentsData,
1291: $seq,'no');
1292: }
1293: if ($data eq 'sum only' || $data eq 'parts correct') {
1294: $Str .= '"'.$score.'",';
1295: } elsif ($data eq 'sum and total' || $data eq 'parts correct total') {
1296: $Str .= '"'.$score.'","'.$seq_max.'",';
1297: } elsif ($data eq 'scores' || $data eq 'tries') {
1298: $Str .= '"'.join('","',(@$rawdata,$score,$seq_max)).'",';
1299: }
1300: }
1301: chop($Str);
1302: $Str .= "\n";
1303: print $outputfile $Str;
1304: #
1305: # Update the progress window
1306: &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,'last student');
1307: return;
1308: }
1309:
1310: sub csv_finish {
1311: my ($r) = @_;
1312: return if ($request_aborted);
1313: return if (! defined($outputfile));
1314: close($outputfile);
1315: #
1316: my $c = $r->connection();
1317: return if ($c->aborted());
1318: #
1319: # Close the progress window
1320: &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
1321: #
1322: # Tell the user where to get their csv file
1323: $r->print('<br />'.
1324: '<a href="'.$filename.'">Your csv file.</a>'."\n");
1325: $r->rflush();
1326: return;
1327:
1328: }
1329:
1330: }
1331:
1332: #######################################################
1333: #######################################################
1334:
1335: =pod
1336:
1337: =item &StudentTriesOnSequence()
1338:
1339: Inputs:
1340:
1341: =over 4
1342:
1343: =item $student
1344:
1345: =item $studentdata Hash ref to all student data
1346:
1347: =item $seq Hash ref, the sequence we are working on
1348:
1349: =item $links if defined we will output links to each resource.
1350:
1351: =back
1352:
1353: =cut
1354:
1355: #######################################################
1356: #######################################################
1357: sub StudentTriesOnSequence {
1358: my ($student,$studentdata,$seq,$links) = @_;
1359: $links = 'no' if (! defined($links));
1360: my $Str = '';
1361: my ($sum,$max) = (0,0);
1362: my $performance_length = 0;
1363: my @TriesData = ();
1364: my $tries;
1365: foreach my $resource (@{$seq->{'contents'}}) {
1366: next if ($resource->{'type'} ne 'assessment');
1367: my $resource_data = $studentdata->{$resource->{'symb'}};
1368: my $value = '';
1369: foreach my $partnum (@{$resource->{'parts'}}) {
1370: $tries = undef;
1371: $max++;
1372: $performance_length++;
1373: my $symbol = ' '; # default to space
1374: #
1375: if (exists($resource_data->{'resource.'.$partnum.'.solved'})) {
1376: my $status = $resource_data->{'resource.'.$partnum.'.solved'};
1377: if ($status eq 'correct_by_override') {
1378: $symbol = '+';
1379: $sum++;
1380: } elsif ($status eq 'incorrect_by_override') {
1381: $symbol = '-';
1382: } elsif ($status eq 'ungraded_attempted') {
1383: $symbol = '#';
1384: } elsif ($status eq 'incorrect_attempted') {
1385: $symbol = '.';
1386: } elsif ($status eq 'excused') {
1387: $symbol = 'x';
1388: $max--;
1389: } elsif ($status eq 'correct_by_student' &&
1390: exists($resource_data->{'resource.'.$partnum.'.tries'})){
1391: $tries = $resource_data->{'resource.'.$partnum.'.tries'};
1392: if ($tries > 9) {
1393: $symbol = '*';
1394: } elsif ($tries > 0) {
1395: $symbol = $tries;
1396: } else {
1397: $symbol = ' ';
1398: }
1399: $sum++;
1400: } elsif (exists($resource_data->{'resource.'.
1401: $partnum.'.tries'})){
1402: $symbol = '.';
1403: } else {
1404: $symbol = ' ';
1405: }
1406: } else {
1407: # Unsolved. Did they try?
1408: if (exists($resource_data->{'resource.'.$partnum.'.tries'})){
1409: $symbol = '.';
1410: } else {
1411: $symbol = ' ';
1412: }
1413: }
1414: #
1415: if (! defined($tries)) {
1416: $tries = $symbol;
1417: }
1418: push (@TriesData,$tries);
1419: #
1420: if ( ($links eq 'yes' && $symbol ne ' ') ||
1421: ($links eq 'all')) {
1422: if (length($symbol) > 1) {
1423: &Apache::lonnet::logthis('length of symbol "'.$symbol.'" > 1');
1424: }
1425: $symbol = '<a href="/adm/grades'.
1426: '?symb='.&Apache::lonnet::escape($resource->{'symb'}).
1427: '&student='.$student->{'username'}.
1428: '&domain='.$student->{'domain'}.
1429: '&command=submission">'.$symbol.'</a>';
1430: }
1431: $value .= $symbol;
1432: }
1433: $Str .= $value;
1434: }
1435: if ($seq->{'randompick'}) {
1436: $max = $seq->{'randompick'};
1437: }
1438: return ($Str,$performance_length,$sum,$max,\@TriesData);
1439: }
1440:
1441: #######################################################
1442: #######################################################
1443:
1444: =pod
1445:
1446: =item &StudentPerformanceOnSequence()
1447:
1448: Inputs:
1449:
1450: =over 4
1451:
1452: =item $student
1453:
1454: =item $studentdata Hash ref to all student data
1455:
1456: =item $seq Hash ref, the sequence we are working on
1457:
1458: =item $links if defined we will output links to each resource.
1459:
1460: =back
1461:
1462: =cut
1463:
1464: #######################################################
1465: #######################################################
1466: sub StudentPerformanceOnSequence {
1467: my ($student,$studentdata,$seq,$links) = @_;
1468: $links = 'no' if (! defined($links));
1469: my $Str = ''; # final result string
1470: my ($score,$max) = (0,0);
1471: my $performance_length = 0;
1472: my $symbol;
1473: my @ScoreData = ();
1474: my $partscore;
1475: foreach my $resource (@{$seq->{'contents'}}) {
1476: next if ($resource->{'type'} ne 'assessment');
1477: my $resource_data = $studentdata->{$resource->{'symb'}};
1478: foreach my $part (@{$resource->{'parts'}}) {
1479: $partscore = undef;
1480: my $weight = &Apache::lonnet::EXT('resource.'.$part.'.weight',
1481: $resource->{'symb'},
1482: $student->{'domain'},
1483: $student->{'username'},
1484: $student->{'section'});
1485: if (!defined($weight) || ($weight eq '')) {
1486: $weight=1;
1487: }
1488: #
1489: $max += $weight; # see the 'excused' branch below...
1490: $performance_length++; # one character per part
1491: $symbol = ' '; # default to space
1492: #
1493: my $awarded = 0;
1494: if (exists($resource_data->{'resource.'.$part.'.awarded'})) {
1495: $awarded = $resource_data->{'resource.'.$part.'.awarded'};
1496: }
1497: #
1498: $partscore = $weight*$awarded;
1499: $score += $partscore;
1500: $symbol = $weight;
1501: if (length($symbol) > 1) {
1502: $symbol = '*';
1503: }
1504: if (exists($resource_data->{'resource.'.$part.'.solved'})) {
1505: my $status = $resource_data->{'resource.'.$part.'.solved'};
1506: if ($status eq 'excused') {
1507: $symbol = 'x';
1508: $max -= $weight; # Do not count 'excused' problems.
1509: }
1510: } else {
1511: # Unsolved. Did they try?
1512: if (exists($resource_data->{'resource.'.$part.'.tries'})){
1513: $symbol = '.';
1514: } else {
1515: $symbol = ' ';
1516: }
1517: }
1518: #
1519: if (! defined($partscore)) {
1520: $partscore = $symbol;
1521: }
1522: push (@ScoreData,$partscore);
1523: #
1524: if ( ($links eq 'yes' && $symbol ne ' ') || ($links eq 'all')) {
1525: $symbol = '<a href="/adm/grades'.
1526: '?symb='.&Apache::lonnet::escape($resource->{'symb'}).
1527: '&student='.$student->{'username'}.
1528: '&domain='.$student->{'domain'}.
1529: '&command=submission">'.$symbol.'</a>';
1530: }
1531: $Str .= $symbol;
1532: }
1533: }
1534: return ($Str,$performance_length,$score,$max,\@ScoreData);
1535: }
1536:
1537: #######################################################
1538: #######################################################
1539:
1540: =pod
1541:
1542: =item &CreateLegend()
1543:
1544: This function returns a formatted string containing the legend for the
1545: chart. The legend describes the symbols used to represent grades for
1546: problems.
1547:
1548: =cut
1549:
1550: #######################################################
1551: #######################################################
1552: sub CreateLegend {
1553: my $Str = "<p><pre>".
1554: " 1 correct by student in 1 try\n".
1555: " 7 correct by student in 7 tries\n".
1556: " * correct by student in more than 9 tries\n".
1557: " + correct by hand grading or override\n".
1558: " - incorrect by override\n".
1559: " . incorrect attempted\n".
1560: " # ungraded attempted\n".
1561: " not attempted (blank field)\n".
1562: " x excused".
1563: "</pre><p>";
1564: return $Str;
1565: }
1566:
1567: #######################################################
1568: #######################################################
1569:
1570: =pod
1571:
1572: =back
1573:
1574: =cut
1575:
1576: #######################################################
1577: #######################################################
1578:
1579: 1;
1580:
1581: __END__
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