1: # The LearningOnline Network with CAPA
2: #
3: # $Id: lonstudentassessment.pm,v 1.63 2003/06/24 19:23:45 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;
339: $Str .= '<br />';
340: return $Str;
341: }
342:
343: #######################################################
344: #######################################################
345:
346: =pod
347:
348: =item &CreateAndParseOutputSelector()
349:
350: =cut
351:
352: #######################################################
353: #######################################################
354: my @OutputOptions =
355: ({ name => 'HTML, with links',
356: value => 'html, with links',
357: description => 'Output HTML with each symbol linked to the problem '.
358: 'which generated it.',
359: mode => 'html',
360: show_links => 'yes',
361: },
362: { name => 'HTML, with all links',
363: value => 'html, with all links',
364: description => 'Output HTML with each symbol linked to the problem '.
365: 'which generated it. '.
366: 'This includes links for unattempted problems.',
367: mode => 'html',
368: show_links => 'all',
369: },
370: { name => 'HTML, without links',
371: value => 'html, without links',
372: description => 'Output HTML. By not including links, the size of the'.
373: ' web page is greatly reduced. If your browser crashes on the '.
374: 'full display, try this.',
375: mode => 'html',
376: show_links => 'no',
377: },
378: { name => 'Excel',
379: value => 'excel',
380: description => 'Output an Excel file (compatable with Excel 95).',
381: mode => 'excel',
382: show_links => 'no',
383: },
384: { name => 'CSV',
385: value => 'csv',
386: description => 'Output a comma seperated values file suitable for '.
387: 'import into a spreadsheet program. Using this method as opposed '.
388: 'to Excel output allows you to organize your data before importing'.
389: ' it into a spreadsheet program.',
390: mode => 'csv',
391: show_links => 'no',
392: },
393: );
394:
395: sub OutputDescriptions {
396: my $Str = '';
397: $Str .= "<h2>Output Formats</h2>\n";
398: $Str .= "<dl>\n";
399: foreach my $outputmode (@OutputOptions) {
400: $Str .=" <dt>".$outputmode->{'name'}."</dt>\n";
401: $Str .=" <dd>".$outputmode->{'description'}."</dd>\n";
402: }
403: $Str .= "</dl>\n";
404: return $Str;
405: }
406:
407: sub CreateAndParseOutputSelector {
408: my $Str = '';
409: my $elementname = 'chartoutputmode';
410: #
411: # Format for output options is 'mode, restrictions';
412: my $selected = 'html, without links';
413: if (exists($ENV{'form.'.$elementname})) {
414: if (ref($ENV{'form.'.$elementname} eq 'ARRAY')) {
415: $selected = $ENV{'form.'.$elementname}->[0];
416: } else {
417: $selected = $ENV{'form.'.$elementname};
418: }
419: }
420: #
421: # Set package variables describing output mode
422: $show_links = 'no';
423: $output_mode = 'html';
424: foreach my $option (@OutputOptions) {
425: next if ($option->{'value'} ne $selected);
426: $output_mode = $option->{'mode'};
427: $show_links = $option->{'show_links'};
428: }
429:
430: #
431: # Build the form element
432: $Str = qq/<select size="5" name="$elementname">/;
433: foreach my $option (@OutputOptions) {
434: $Str .= "\n".' <option value="'.$option->{'value'}.'"';
435: $Str .= " selected " if ($option->{'value'} eq $selected);
436: $Str .= ">".$option->{'name'}."<\/option>";
437: }
438: $Str .= "\n</select>";
439: return $Str;
440: }
441:
442: ##
443: ## Data selector stuff
444: ##
445: my @OutputDataOptions =
446: (
447: { name => 'Scores',
448: base => 'scores',
449: value => 'scores',
450: shortdesc => 'Score on each Problem Part',
451: longdesc =>'The students score on each problem part, computed as'.
452: 'the part weight * part awarded',
453: },
454: { name => 'Scores Sum',
455: base => 'scores',
456: value => 'sum only',
457: shortdesc => 'Sum of Scores on each Problem Part',
458: longdesc =>'The total of the scores of the student on each problem'.
459: ' part in the sequences or folders selected.',
460: },
461: { name => 'Scores Sum & Maximums',
462: base => 'scores',
463: value => 'sum and total',
464: shortdesc => 'Total Score and Maximum Possible for each '.
465: 'Sequence or Folder',
466: longdesc => 'The score of each student as well as the '.
467: ' maximum possible on each Sequence or Folder.',
468: },
469: { name => 'Scores Summary Table Only',
470: base => 'scores',
471: value => 'final table scores',
472: shortdesc => 'Summary of Scores',
473: longdesc => 'The average score on each sequence or folder for the '.
474: 'selected students.',
475: },
476: { name =>'Tries',
477: base =>'tries',
478: value => 'tries',
479: shortdesc => 'Number of Tries before success on each Problem Part',
480: longdesc =>'The number of tries before success on each problem part.',
481: },
482: { name =>'Parts Correct',
483: base =>'tries',
484: value => 'parts correct',
485: shortdesc => 'Number of Problem Parts completed successfully.',
486: longdesc => 'The Number of Problem Parts completed successfully'.
487: ' on each sequence or folder.',
488: },
489: { name =>'Parts Correct & Maximums',
490: base =>'tries',
491: value => 'parts correct total',
492: shortdesc => 'Number of Problem Parts completed successfully.',
493: longdesc => 'The Number of Problem Parts completed successfully and '.
494: 'the maximum possible for each student',
495: },
496: { name => 'Parts Summary Table Only',
497: base => 'tries',
498: value => 'final table parts',
499: shortdesc => 'Summary of Parts Correct',
500: longdesc => 'A summary table of the average number of problem parts '.
501: 'students were able to get correct on each sequence.',
502: },
503: );
504:
505: sub HTMLifyOutputDataDescriptions {
506: my $Str = '';
507: $Str .= "<h2>Output Data</h2>\n";
508: $Str .= "<dl>\n";
509: foreach my $option (@OutputDataOptions) {
510: $Str .= ' <dt>'.$option->{'name'}.'</dt>';
511: $Str .= '<dd>'.$option->{'longdesc'}.'</dd>'."\n";
512: }
513: $Str .= "</dl>\n";
514: return $Str;
515: }
516:
517: sub CreateAndParseOutputDataSelector {
518: my $Str = '';
519: my $elementname = 'chartoutputdata';
520: #
521: my $selected = 'scores';
522: if (exists($ENV{'form.'.$elementname})) {
523: if (ref($ENV{'form.'.$elementname} eq 'ARRAY')) {
524: $selected = $ENV{'form.'.$elementname}->[0];
525: } else {
526: $selected = $ENV{'form.'.$elementname};
527: }
528: }
529: #
530: $data = 'scores';
531: foreach my $option (@OutputDataOptions) {
532: if ($option->{'value'} eq $selected) {
533: $data = $option->{'value'};
534: $base = $option->{'base'};
535: $datadescription = $option->{'shortdesc'};
536: }
537: }
538: #
539: # Build the form element
540: $Str = qq/<select size="5" name="$elementname">/;
541: foreach my $option (@OutputDataOptions) {
542: $Str .= "\n".' <option value="'.$option->{'value'}.'"';
543: $Str .= " selected " if ($option->{'value'} eq $data);
544: $Str .= ">".$option->{'name'}."<\/option>";
545: }
546: $Str .= "\n</select>";
547: return $Str;
548:
549: }
550:
551: #######################################################
552: #######################################################
553:
554: =pod
555:
556: =head2 HTML output routines
557:
558: =item &html_initialize($r)
559:
560: Create labels for the columns of student data to show.
561:
562: =item &html_outputstudent($r,$student)
563:
564: Return a line of the chart for a student.
565:
566: =item &html_finish($r)
567:
568: =cut
569:
570: #######################################################
571: #######################################################
572: {
573: my $padding;
574: my $count;
575:
576: my $nodata_count; # The number of students for which there is no data
577: my %prog_state; # progress state used by loncommon PrgWin routines
578:
579: sub html_initialize {
580: my ($r) = @_;
581: #
582: $padding = ' 'x3;
583: $count = 0;
584: $nodata_count = 0;
585: #
586: $r->print("<h3>".$ENV{'course.'.$ENV{'request.course.id'}.'.description'}.
587: " ".localtime(time)."</h3>");
588:
589: if ($data !~ /^final table/) {
590: $r->print("<h3>".$datadescription."</h3>");
591: }
592: #
593: # Set up progress window for 'final table' display only
594: if ($data =~ /^final table/) {
595: my $studentcount = scalar(@Apache::lonstatistics::Students);
596: %prog_state=&Apache::lonhtmlcommon::Create_PrgWin
597: ($r,'Summary Table Status',
598: 'Summary Table Compilation Progress', $studentcount);
599: }
600: my $Str = "<pre>\n";
601: # First, the @StudentData fields need to be listed
602: my @to_show = &get_student_fields_to_show();
603: foreach my $field (@to_show) {
604: my $title=$Apache::lonstatistics::StudentData{$field}->{'title'};
605: my $base =$Apache::lonstatistics::StudentData{$field}->{'base_width'};
606: my $width=$Apache::lonstatistics::StudentData{$field}->{'width'};
607: $Str .= $title.' 'x($width-$base).$padding;
608: }
609: # Now the selected sequences need to be listed
610: foreach my $sequence (&Apache::lonstatistics::Sequences_with_Assess()){
611: my $title = $sequence->{'title'};
612: my $base = $sequence->{'base_width'};
613: my $width = $sequence->{'width'};
614: $Str .= $title.' 'x($width-$base).$padding;
615: }
616: $Str .= "total</pre>\n";
617: $Str .= "<pre>";
618: #
619: # Check for suppression of output
620: if ($data =~ /^final table/) {
621: $Str = '';
622: }
623: $r->print($Str);
624: $r->rflush();
625: return;
626: }
627:
628: sub html_outputstudent {
629: my ($r,$student) = @_;
630: my $Str = '';
631: #
632: if($count++ % 5 == 0 && $count > 0 && $data !~ /^final table/) {
633: $r->print("</pre><pre>");
634: }
635: # First, the @StudentData fields need to be listed
636: my @to_show = &get_student_fields_to_show();
637: foreach my $field (@to_show) {
638: my $title=$student->{$field};
639: my $base = length($title);
640: my $width=$Apache::lonstatistics::StudentData{$field}->{'width'};
641: $Str .= $title.' 'x($width-$base).$padding;
642: }
643: # Get ALL the students data
644: my %StudentsData;
645: my @tmp = &Apache::loncoursedata::get_current_state
646: ($student->{'username'},$student->{'domain'},undef,
647: $ENV{'request.course.id'});
648: if ((scalar @tmp > 0) && ($tmp[0] !~ /^error:/)) {
649: %StudentsData = @tmp;
650: }
651: if (scalar(@tmp) < 1) {
652: $nodata_count++;
653: return if ($data =~ /^final table/);
654: $Str .= '<font color="blue">No Course Data</font>'."\n";
655: $r->print($Str);
656: $r->rflush();
657: return;
658: }
659: #
660: # By sequence build up the data
661: my $studentstats;
662: my $PerformanceStr = '';
663: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
664: my ($performance,$performance_length,$score,$seq_max,$rawdata);
665: if ($base eq 'tries') {
666: ($performance,$performance_length,$score,$seq_max,$rawdata) =
667: &StudentTriesOnSequence($student,\%StudentsData,
668: $seq,$show_links);
669: } else {
670: ($performance,$performance_length,$score,$seq_max,$rawdata) =
671: &StudentPerformanceOnSequence($student,\%StudentsData,
672: $seq,$show_links);
673: }
674: my $ratio = sprintf("%3d",$score).'/'.sprintf("%3d",$seq_max);
675: #
676: if ($data eq 'sum and total' || $data eq 'parts correct total') {
677: $performance = $ratio;
678: $performance .= ' 'x($seq->{'width'}-length($ratio));
679: } elsif ($data eq 'sum only' || $data eq 'parts correct') {
680: $performance = $score;
681: $performance .= ' 'x($seq->{'width'}-length($score));
682: } else {
683: # Pad with extra spaces
684: $performance .= ' 'x($seq->{'width'}-$performance_length-
685: length($ratio)
686: ).$ratio;
687: }
688: #
689: $Str .= $performance.$padding;
690: #
691: $studentstats->{$seq->{'symb'}}->{'score'}= $score;
692: $studentstats->{$seq->{'symb'}}->{'max'} = $seq_max;
693: }
694: #
695: # Total it up and store the statistics info.
696: my ($score,$max) = (0,0);
697: while (my ($symb,$seq_stats) = each (%{$studentstats})) {
698: $Statistics->{$symb}->{'score'} += $seq_stats->{'score'};
699: if ($Statistics->{$symb}->{'max'} < $seq_stats->{'max'}) {
700: $Statistics->{$symb}->{'max'} = $seq_stats->{'max'};
701: }
702: $score += $seq_stats->{'score'};
703: $max += $seq_stats->{'max'};
704: }
705: $Str .= ' '.' 'x(length($max)-length($score)).$score.'/'.$max;
706: $Str .= " \n";
707: #
708: # Check for suppressed output and update the progress window if so...
709: if ($data =~ /^final table/) {
710: $Str = '';
711: &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
712: 'last student');
713: }
714: #
715: $r->print($Str);
716: #
717: $r->rflush();
718: return;
719: }
720:
721: sub html_finish {
722: my ($r) = @_;
723: #
724: # Check for suppressed output and close the progress window if so
725: if ($data =~ /^final table/) {
726: &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
727: } else {
728: $r->print("</pre>\n");
729: }
730: if ($single_student_mode) {
731: $r->print(&SingleStudentTotal());
732: } else {
733: $r->print(&StudentAverageTotal());
734: }
735: $r->rflush();
736: return;
737: }
738:
739: sub StudentAverageTotal {
740: my $Str = "<h3>Summary Tables</h3>\n";
741: my $num_students = scalar(@Apache::lonstatistics::Students);
742: my $total_ave = 0;
743: my $total_max = 0;
744: $Str .= '<table border=2 cellspacing="1">'."\n";
745: $Str .= "<tr><th>Title</th><th>Average</th><th>Maximum</th></tr>\n";
746: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
747: my $ave;
748: if ($num_students > $nodata_count) {
749: $ave = int(100*($Statistics->{$seq->{'symb'}}->{'score'}/
750: ($num_students-$nodata_count)))/100;
751: } else {
752: $ave = 0;
753: }
754: $total_ave += $ave;
755: my $max = $Statistics->{$seq->{'symb'}}->{'max'};
756: $total_max += $max;
757: if ($ave == 0) {
758: $ave = "0.00";
759: }
760: $ave .= ' ';
761: $max .= ' ';
762: $Str .= '<tr><td>'.$seq->{'title'}.'</td>'.
763: '<td align="right">'.$ave.'</td>'.
764: '<td align="right">'.$max.'</td></tr>'."\n";
765: }
766: $total_ave = int(100*$total_ave)/100; # only two digit
767: $Str .= "</table>\n";
768: $Str .= '<table border=2 cellspacing="1">'."\n";
769: $Str .= '<tr><th>Number of Students</th><th>Average</th>'.
770: "<th>Maximum</th></tr>\n";
771: $Str .= '<tr><td>'.($num_students-$nodata_count).'</td>'.
772: '<td>'.$total_ave.'</td><td>'.$total_max.'</td>';
773: $Str .= "</table>\n";
774: return $Str;
775: }
776:
777: sub SingleStudentTotal {
778: my $student = &Apache::lonstatistics::current_student();
779: my $Str = "<h3>Summary table for ".$student->{'fullname'}." ".
780: $student->{'username'}.'@'.$student->{'domain'}."</h3>\n";
781: $Str .= '<table border=2 cellspacing="1">'."\n";
782: $Str .=
783: "<tr><th>Sequence or Folder</th><th>Score</th><th>Maximum</th></tr>\n";
784: my $total = 0;
785: my $total_max = 0;
786: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
787: my $value = $Statistics->{$seq->{'symb'}}->{'score'};
788: my $max = $Statistics->{$seq->{'symb'}}->{'max'};
789: $Str .= '<tr><td>'.$seq->{'title'}.'</td>'.
790: '<td align="right">'.$value.'</td>'.
791: '<td align="right">'.$max.'</td></tr>'."\n";
792: $total += $value;
793: $total_max +=$max;
794: }
795: $Str .= '<tr><td><b>Total</b></td>'.
796: '<td align="right">'.$total.'</td>'.
797: '<td align="right">'.$total_max."</td></tr>\n";
798: $Str .= "</table>\n";
799: return $Str;
800: }
801:
802: }
803:
804: #######################################################
805: #######################################################
806:
807: =pod
808:
809: =head2 EXCEL subroutines
810:
811: =item &excel_initialize($r)
812:
813: =item &excel_outputstudent($r,$student)
814:
815: =item &excel_finish($r)
816:
817: =cut
818:
819: #######################################################
820: #######################################################
821: {
822:
823: my $excel_sheet;
824: my $excel_workbook;
825:
826: my $filename;
827: my $rows_output;
828: my $cols_output;
829:
830: my %prog_state; # progress window state
831: my $request_aborted;
832:
833: sub excel_initialize {
834: my ($r) = @_;
835: #
836: $request_aborted = undef;
837: my $total_columns = scalar(&get_student_fields_to_show());
838: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
839: # Add 2 because we need a 'sum' and 'total' column for each
840: $total_columns += $seq->{'num_assess_parts'}+2;
841: }
842: if ($data eq 'tries' && $total_columns > 255) {
843: $r->print(<<END);
844: <h2>Unable to Complete Request</h2>
845: <p>
846: LON-CAPA is unable to produce your Excel spreadsheet because your selections
847: will result in more than 255 columns. Excel allows only 255 columns in a
848: spreadsheet.
849: </p><p>
850: You may consider reducing the number of <b>Sequences or Folders</b> you
851: have selected.
852: </p><p>
853: LON-CAPA can produce <b>CSV</b> files of this data or Excel files of the
854: summary data (<b>Parts Correct</b> or <b>Parts Correct & Totals</b>).
855: </p>
856: END
857: $request_aborted = 1;
858: }
859: if ($data eq 'scores' && $total_columns > 255) {
860: $r->print(<<END);
861: <h2>Unable to Complete Request</h2>
862: <p>
863: LON-CAPA is unable to produce your Excel spreadsheet because your selections
864: will result in more than 255 columns. Excel allows only 255 columns in a
865: spreadsheet.
866: </p><p>
867: You may consider reducing the number of <b>Sequences or Folders</b> you
868: have selected.
869: </p><p>
870: LON-CAPA can produce <b>CSV</b> files of this data or Excel files of the
871: summary data (<b>Scores Sum</b> or <b>Scores Sum & Totals</b>).
872: </p>
873: END
874: $request_aborted = 1;
875: }
876: if ($data =~ /^final table/) {
877: $r->print(<<END);
878: <h2>Unable to Complete Request</h2>
879: <p>
880: The <b>Summary Table (Scores)</b> option is not available for non-HTML output.
881: </p>
882: END
883: $request_aborted = 1;
884: }
885: return if ($request_aborted);
886: #
887: $filename = '/prtspool/'.
888: $ENV{'user.name'}.'_'.$ENV{'user.domain'}.'_'.
889: time.'_'.rand(1000000000).'.xls';
890: #
891: $excel_workbook = undef;
892: $excel_sheet = undef;
893: #
894: $rows_output = 0;
895: $cols_output = 0;
896: #
897: # Create sheet
898: $excel_workbook = Spreadsheet::WriteExcel->new('/home/httpd'.$filename);
899: #
900: # Check for errors
901: if (! defined($excel_workbook)) {
902: $r->log_error("Error creating excel spreadsheet $filename: $!");
903: $r->print("Problems creating new Excel file. ".
904: "This error has been logged. ".
905: "Please alert your LON-CAPA administrator");
906: return ;
907: }
908: #
909: # The excel spreadsheet stores temporary data in files, then put them
910: # together. If needed we should be able to disable this (memory only).
911: # The temporary directory must be specified before calling 'addworksheet'.
912: # File::Temp is used to determine the temporary directory.
913: $excel_workbook->set_tempdir($Apache::lonnet::tmpdir);
914: #
915: # Add a worksheet
916: my $sheetname = $ENV{'course.'.$ENV{'request.course.id'}.'.description'};
917: if (length($sheetname) > 31) {
918: $sheetname = substr($sheetname,0,31);
919: }
920: $excel_sheet = $excel_workbook->addworksheet($sheetname);
921: #
922: # Put the course description in the header
923: $excel_sheet->write($rows_output,$cols_output++,
924: $ENV{'course.'.$ENV{'request.course.id'}.'.description'});
925: $cols_output += 3;
926: #
927: # Put a description of the sections listed
928: my $sectionstring = '';
929: my @Sections = @Apache::lonstatistics::SelectedSections;
930: if (scalar(@Sections) > 1) {
931: if (scalar(@Sections) > 2) {
932: my $last = pop(@Sections);
933: $sectionstring = "Sections ".join(', ',@Sections).', and '.$last;
934: } else {
935: $sectionstring = "Sections ".join(' and ',@Sections);
936: }
937: } else {
938: if ($Sections[0] eq 'all') {
939: $sectionstring = "All sections";
940: } else {
941: $sectionstring = "Section ".$Sections[0];
942: }
943: }
944: $excel_sheet->write($rows_output,$cols_output++,$sectionstring);
945: $cols_output += scalar(@Sections);
946: #
947: # Put the date in there too
948: $excel_sheet->write($rows_output++,$cols_output++,
949: 'Compiled on '.localtime(time));
950: #
951: $cols_output = 0;
952: $excel_sheet->write($rows_output++,$cols_output++,$datadescription);
953: #
954: if ($data eq 'tries' || $data eq 'scores') {
955: $rows_output++;
956: }
957: #
958: # Add the student headers
959: $cols_output = 0;
960: foreach my $field (&get_student_fields_to_show()) {
961: $excel_sheet->write($rows_output,$cols_output++,$field);
962: }
963: my $row_offset = 0;
964: if ($data eq 'tries' || $data eq 'scores') {
965: $row_offset = -1;
966: }
967: #
968: # Add the remaining column headers
969: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
970: $excel_sheet->write($rows_output+$row_offset,
971: $cols_output,$seq->{'title'});
972: if ($data eq 'tries' || $data eq 'scores') {
973: foreach my $res (@{$seq->{'contents'}}) {
974: next if ($res->{'type'} ne 'assessment');
975: if (scalar(@{$res->{'parts'}}) > 1) {
976: foreach my $part (@{$res->{'parts'}}) {
977: $excel_sheet->write($rows_output,
978: $cols_output++,
979: $res->{'title'}.' part '.$part);
980: }
981: } else {
982: $excel_sheet->write($rows_output,
983: $cols_output++,
984: $res->{'title'});
985: }
986: }
987: $excel_sheet->write($rows_output,$cols_output++,'score');
988: $excel_sheet->write($rows_output,$cols_output++,'maximum');
989: } elsif ($data eq 'sum and total' || $data eq 'parts correct total') {
990: $excel_sheet->write($rows_output+1,$cols_output,'score');
991: $excel_sheet->write($rows_output+1,$cols_output+1,'maximum');
992: $cols_output += 2;
993: } else {
994: $cols_output++;
995: }
996: }
997: #
998: # Bookkeeping
999: if ($data eq 'sum and total' || $data eq 'parts correct total') {
1000: $rows_output += 2;
1001: } else {
1002: $rows_output += 1;
1003: }
1004: #
1005: # Output a row for MAX
1006: $cols_output = 0;
1007: foreach my $field (&get_student_fields_to_show()) {
1008: if ($field eq 'username' || $field eq 'fullname' ||
1009: $field eq 'id') {
1010: $excel_sheet->write($rows_output,$cols_output++,'Maximum');
1011: } else {
1012: $excel_sheet->write($rows_output,$cols_output++,'');
1013: }
1014: }
1015: #
1016: # Add the maximums for each sequence or assessment
1017: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
1018: my $weight;
1019: my $max = 0;
1020: foreach my $resource (@{$seq->{'contents'}}) {
1021: next if ($resource->{'type'} ne 'assessment');
1022: foreach my $part (@{$resource->{'parts'}}) {
1023: $weight = 1;
1024: if ($base eq 'scores') {
1025: $weight = &Apache::lonnet::EXT
1026: ('resource.'.$part.'.weight',$resource->{'symb'},
1027: undef,undef,undef);
1028: if (!defined($weight) || ($weight eq '')) {
1029: $weight=1;
1030: }
1031: }
1032: if ($data eq 'scores') {
1033: $excel_sheet->write($rows_output,$cols_output++,$weight);
1034: } elsif ($data eq 'tries') {
1035: $excel_sheet->write($rows_output,$cols_output++,'');
1036: }
1037: $max += $weight;
1038: }
1039: }
1040: if (! ($data eq 'sum only' || $data eq 'parts correct')) {
1041: $excel_sheet->write($rows_output,$cols_output++,'');
1042: }
1043: $excel_sheet->write($rows_output,$cols_output++,$max);
1044: }
1045: $rows_output++;
1046: #
1047: # Let the user know what we are doing
1048: my $studentcount = scalar(@Apache::lonstatistics::Students);
1049: $r->print("<h1>Compiling Excel spreadsheet for ".
1050: $studentcount.' student');
1051: $r->print('s') if ($studentcount > 1);
1052: $r->print("</h1>\n");
1053: $r->rflush();
1054: #
1055: # Initialize progress window
1056: %prog_state=&Apache::lonhtmlcommon::Create_PrgWin
1057: ($r,'Excel File Compilation Status',
1058: 'Excel File Compilation Progress', $studentcount);
1059: #
1060: &Apache::lonhtmlcommon::Update_PrgWin($r,\%prog_state,
1061: 'Processing first student');
1062: return;
1063: }
1064:
1065: sub excel_outputstudent {
1066: my ($r,$student) = @_;
1067: return if ($request_aborted);
1068: return if (! defined($excel_sheet));
1069: $cols_output=0;
1070: #
1071: # Write out student data
1072: my @to_show = &get_student_fields_to_show();
1073: foreach my $field (@to_show) {
1074: $excel_sheet->write($rows_output,$cols_output++,$student->{$field});
1075: }
1076: #
1077: # Get student assessment data
1078: my %StudentsData;
1079: my @tmp = &Apache::loncoursedata::get_current_state($student->{'username'},
1080: $student->{'domain'},
1081: undef,
1082: $ENV{'request.course.id'});
1083: if ((scalar @tmp > 0) && ($tmp[0] !~ /^error:/)) {
1084: %StudentsData = @tmp;
1085: }
1086: #
1087: # Write out sequence scores and totals data
1088: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
1089: my ($performance,$performance_length,$score,$seq_max,$rawdata);
1090: if ($base eq 'tries') {
1091: ($performance,$performance_length,$score,$seq_max,$rawdata) =
1092: &StudentTriesOnSequence($student,\%StudentsData,
1093: $seq,'no');
1094: } else {
1095: ($performance,$performance_length,$score,$seq_max,$rawdata) =
1096: &StudentPerformanceOnSequence($student,\%StudentsData,
1097: $seq,'no');
1098: }
1099: if ($data eq 'tries' || $data eq 'scores') {
1100: foreach my $value (@$rawdata) {
1101: $excel_sheet->write($rows_output,$cols_output++,$value);
1102: }
1103: $excel_sheet->write($rows_output,$cols_output++,$score);
1104: $excel_sheet->write($rows_output,$cols_output++,$seq_max);
1105: } elsif ($data eq 'sum and total' || $data eq 'sum only' ||
1106: $data eq 'parts correct' || $data eq 'parts correct total') {
1107: $excel_sheet->write($rows_output,$cols_output++,$score);
1108: }
1109: if ($data eq 'sum and total' || $data eq 'parts correct total') {
1110: $excel_sheet->write($rows_output,$cols_output++,$seq_max);
1111: }
1112: }
1113: #
1114: # Bookkeeping
1115: $rows_output++;
1116: $cols_output=0;
1117: #
1118: # Update the progress window
1119: &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,'last student');
1120: return;
1121: }
1122:
1123: sub excel_finish {
1124: my ($r) = @_;
1125: return if ($request_aborted);
1126: return if (! defined($excel_sheet));
1127: #
1128: # Write the excel file
1129: $excel_workbook->close();
1130: my $c = $r->connection();
1131: #
1132: return if($c->aborted());
1133: #
1134: # Close the progress window
1135: &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
1136: #
1137: # Tell the user where to get their excel file
1138: $r->print('<br />'.
1139: '<a href="'.$filename.'">Your Excel spreadsheet.</a>'."\n");
1140: $r->rflush();
1141: return;
1142: }
1143:
1144: }
1145: #######################################################
1146: #######################################################
1147:
1148: =pod
1149:
1150: =head2 CSV output routines
1151:
1152: =item &csv_initialize($r)
1153:
1154: =item &csv_outputstudent($r,$student)
1155:
1156: =item &csv_finish($r)
1157:
1158: =cut
1159:
1160: #######################################################
1161: #######################################################
1162: {
1163:
1164: my $outputfile;
1165: my $filename;
1166: my $request_aborted;
1167: my %prog_state; # progress window state
1168:
1169: sub csv_initialize{
1170: my ($r) = @_;
1171: #
1172: # Clean up
1173: $filename = undef;
1174: $outputfile = undef;
1175: undef(%prog_state);
1176: #
1177: # Deal with unimplemented requests
1178: $request_aborted = undef;
1179: if ($data =~ /final table/) {
1180: $r->print(<<END);
1181: <h2>Unable to Complete Request</h2>
1182: <p>
1183: The <b>Summary Table (Scores)</b> option is not available for non-HTML output.
1184: </p>
1185: END
1186: $request_aborted = 1;
1187: }
1188: return if ($request_aborted);
1189:
1190: #
1191: # Open a file
1192: $filename = '/prtspool/'.
1193: $ENV{'user.name'}.'_'.$ENV{'user.domain'}.'_'.
1194: time.'_'.rand(1000000000).'.csv';
1195: unless ($outputfile = Apache::File->new('>/home/httpd'.$filename)) {
1196: $r->log_error("Couldn't open $filename for output $!");
1197: $r->print("Problems occured in writing the csv file. ".
1198: "This error has been logged. ".
1199: "Please alert your LON-CAPA administrator.");
1200: $outputfile = undef;
1201: }
1202: #
1203: # Datestamp
1204: my $description = $ENV{'course.'.$ENV{'request.course.id'}.'.description'};
1205: print $outputfile '"'.&Apache::loncommon::csv_translate($description).'",'.
1206: '"'.&Apache::loncommon::csv_translate(scalar(localtime(time))).'"'.
1207: "\n";
1208: #
1209: # Print out the headings
1210: my $Str = '';
1211: my $Str2 = undef;
1212: foreach my $field (&get_student_fields_to_show()) {
1213: if ($data eq 'sum only') {
1214: $Str .= '"'.&Apache::loncommon::csv_translate($field).'",';
1215: } elsif ($data eq 'sum and total' || $data eq 'parts correct total') {
1216: $Str .= '"",'; # first row empty on the student fields
1217: $Str2 .= '"'.&Apache::loncommon::csv_translate($field).'",';
1218: } elsif ($data eq 'scores' || $data eq 'tries' ||
1219: $data eq 'parts correct') {
1220: $Str .= '"",';
1221: $Str2 .= '"'.&Apache::loncommon::csv_translate($field).'",';
1222: }
1223: }
1224: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
1225: if ($data eq 'sum only' || $data eq 'parts correct') {
1226: $Str .= '"'.&Apache::loncommon::csv_translate($seq->{'title'}).
1227: '",';
1228: } elsif ($data eq 'sum and total' || $data eq 'parts correct total') {
1229: $Str .= '"'.&Apache::loncommon::csv_translate($seq->{'title'}).
1230: '","",';
1231: $Str2 .= '"score","total possible",';
1232: } elsif ($data eq 'scores' || $data eq 'tries') {
1233: $Str .= '"'.&Apache::loncommon::csv_translate($seq->{'title'}).
1234: '",';
1235: $Str .= '"",'x($seq->{'num_assess_parts'}-1+2);
1236: foreach my $res (@{$seq->{'contents'}}) {
1237: next if ($res->{'type'} ne 'assessment');
1238: foreach my $part (@{$res->{'parts'}}) {
1239: $Str2 .= '"'.&Apache::loncommon::csv_translate($res->{'title'}.', Part '.$part).'",';
1240: }
1241: }
1242: $Str2 .= '"score","total possible",';
1243: }
1244: }
1245: chop($Str);
1246: $Str .= "\n";
1247: print $outputfile $Str;
1248: if (defined($Str2)) {
1249: chop($Str2);
1250: $Str2 .= "\n";
1251: print $outputfile $Str2;
1252: }
1253: #
1254: # Initialize progress window
1255: my $studentcount = scalar(@Apache::lonstatistics::Students);
1256: %prog_state=&Apache::lonhtmlcommon::Create_PrgWin
1257: ($r,'CSV File Compilation Status',
1258: 'CSV File Compilation Progress', $studentcount);
1259: return;
1260: }
1261:
1262: sub csv_outputstudent {
1263: my ($r,$student) = @_;
1264: return if ($request_aborted);
1265: return if (! defined($outputfile));
1266: my $Str = '';
1267: #
1268: # Output student fields
1269: my @to_show = &get_student_fields_to_show();
1270: foreach my $field (@to_show) {
1271: $Str .= '"'.&Apache::loncommon::csv_translate($student->{$field}).'",';
1272: }
1273: #
1274: # Get student assessment data
1275: my %StudentsData;
1276: my @tmp = &Apache::loncoursedata::get_current_state($student->{'username'},
1277: $student->{'domain'},
1278: undef,
1279: $ENV{'request.course.id'});
1280: if ((scalar @tmp > 0) && ($tmp[0] !~ /^error:/)) {
1281: %StudentsData = @tmp;
1282: }
1283: #
1284: # Output performance data
1285: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
1286: my ($performance,$performance_length,$score,$seq_max,$rawdata);
1287: if ($base eq 'tries') {
1288: ($performance,$performance_length,$score,$seq_max,$rawdata) =
1289: &StudentTriesOnSequence($student,\%StudentsData,
1290: $seq,'no');
1291: } else {
1292: ($performance,$performance_length,$score,$seq_max,$rawdata) =
1293: &StudentPerformanceOnSequence($student,\%StudentsData,
1294: $seq,'no');
1295: }
1296: if ($data eq 'sum only' || $data eq 'parts correct') {
1297: $Str .= '"'.$score.'",';
1298: } elsif ($data eq 'sum and total' || $data eq 'parts correct total') {
1299: $Str .= '"'.$score.'","'.$seq_max.'",';
1300: } elsif ($data eq 'scores' || $data eq 'tries') {
1301: $Str .= '"'.join('","',(@$rawdata,$score,$seq_max)).'",';
1302: }
1303: }
1304: chop($Str);
1305: $Str .= "\n";
1306: print $outputfile $Str;
1307: #
1308: # Update the progress window
1309: &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,'last student');
1310: return;
1311: }
1312:
1313: sub csv_finish {
1314: my ($r) = @_;
1315: return if ($request_aborted);
1316: return if (! defined($outputfile));
1317: close($outputfile);
1318: #
1319: my $c = $r->connection();
1320: return if ($c->aborted());
1321: #
1322: # Close the progress window
1323: &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
1324: #
1325: # Tell the user where to get their csv file
1326: $r->print('<br />'.
1327: '<a href="'.$filename.'">Your csv file.</a>'."\n");
1328: $r->rflush();
1329: return;
1330:
1331: }
1332:
1333: }
1334:
1335: #######################################################
1336: #######################################################
1337:
1338: =pod
1339:
1340: =item &StudentTriesOnSequence()
1341:
1342: Inputs:
1343:
1344: =over 4
1345:
1346: =item $student
1347:
1348: =item $studentdata Hash ref to all student data
1349:
1350: =item $seq Hash ref, the sequence we are working on
1351:
1352: =item $links if defined we will output links to each resource.
1353:
1354: =back
1355:
1356: =cut
1357:
1358: #######################################################
1359: #######################################################
1360: sub StudentTriesOnSequence {
1361: my ($student,$studentdata,$seq,$links) = @_;
1362: $links = 'no' if (! defined($links));
1363: my $Str = '';
1364: my ($sum,$max) = (0,0);
1365: my $performance_length = 0;
1366: my @TriesData = ();
1367: my $tries;
1368: foreach my $resource (@{$seq->{'contents'}}) {
1369: next if ($resource->{'type'} ne 'assessment');
1370: my $resource_data = $studentdata->{$resource->{'symb'}};
1371: my $value = '';
1372: foreach my $partnum (@{$resource->{'parts'}}) {
1373: $tries = undef;
1374: $max++;
1375: $performance_length++;
1376: my $symbol = ' '; # default to space
1377: #
1378: if (exists($resource_data->{'resource.'.$partnum.'.solved'})) {
1379: my $status = $resource_data->{'resource.'.$partnum.'.solved'};
1380: if ($status eq 'correct_by_override') {
1381: $symbol = '+';
1382: $sum++;
1383: } elsif ($status eq 'incorrect_by_override') {
1384: $symbol = '-';
1385: } elsif ($status eq 'ungraded_attempted') {
1386: $symbol = '#';
1387: } elsif ($status eq 'incorrect_attempted') {
1388: $symbol = '.';
1389: } elsif ($status eq 'excused') {
1390: $symbol = 'x';
1391: $max--;
1392: } elsif ($status eq 'correct_by_student' &&
1393: exists($resource_data->{'resource.'.$partnum.'.tries'})){
1394: $tries = $resource_data->{'resource.'.$partnum.'.tries'};
1395: if ($tries > 9) {
1396: $symbol = '*';
1397: } elsif ($tries > 0) {
1398: $symbol = $tries;
1399: } else {
1400: $symbol = ' ';
1401: }
1402: $sum++;
1403: } elsif (exists($resource_data->{'resource.'.
1404: $partnum.'.tries'})){
1405: $symbol = '.';
1406: } else {
1407: $symbol = ' ';
1408: }
1409: } else {
1410: # Unsolved. Did they try?
1411: if (exists($resource_data->{'resource.'.$partnum.'.tries'})){
1412: $symbol = '.';
1413: } else {
1414: $symbol = ' ';
1415: }
1416: }
1417: #
1418: if (! defined($tries)) {
1419: $tries = $symbol;
1420: }
1421: push (@TriesData,$tries);
1422: #
1423: if ( ($links eq 'yes' && $symbol ne ' ') ||
1424: ($links eq 'all')) {
1425: if (length($symbol) > 1) {
1426: &Apache::lonnet::logthis('length of symbol "'.$symbol.'" > 1');
1427: }
1428: $symbol = '<a href="/adm/grades'.
1429: '?symb='.&Apache::lonnet::escape($resource->{'symb'}).
1430: '&student='.$student->{'username'}.
1431: '&domain='.$student->{'domain'}.
1432: '&command=submission">'.$symbol.'</a>';
1433: }
1434: $value .= $symbol;
1435: }
1436: $Str .= $value;
1437: }
1438: if ($seq->{'randompick'}) {
1439: $max = $seq->{'randompick'};
1440: }
1441: return ($Str,$performance_length,$sum,$max,\@TriesData);
1442: }
1443:
1444: #######################################################
1445: #######################################################
1446:
1447: =pod
1448:
1449: =item &StudentPerformanceOnSequence()
1450:
1451: Inputs:
1452:
1453: =over 4
1454:
1455: =item $student
1456:
1457: =item $studentdata Hash ref to all student data
1458:
1459: =item $seq Hash ref, the sequence we are working on
1460:
1461: =item $links if defined we will output links to each resource.
1462:
1463: =back
1464:
1465: =cut
1466:
1467: #######################################################
1468: #######################################################
1469: sub StudentPerformanceOnSequence {
1470: my ($student,$studentdata,$seq,$links) = @_;
1471: $links = 'no' if (! defined($links));
1472: my $Str = ''; # final result string
1473: my ($score,$max) = (0,0);
1474: my $performance_length = 0;
1475: my $symbol;
1476: my @ScoreData = ();
1477: my $partscore;
1478: foreach my $resource (@{$seq->{'contents'}}) {
1479: next if ($resource->{'type'} ne 'assessment');
1480: my $resource_data = $studentdata->{$resource->{'symb'}};
1481: foreach my $part (@{$resource->{'parts'}}) {
1482: $partscore = undef;
1483: my $weight = &Apache::lonnet::EXT('resource.'.$part.'.weight',
1484: $resource->{'symb'},
1485: $student->{'domain'},
1486: $student->{'username'},
1487: $student->{'section'});
1488: if (!defined($weight) || ($weight eq '')) {
1489: $weight=1;
1490: }
1491: #
1492: $max += $weight; # see the 'excused' branch below...
1493: $performance_length++; # one character per part
1494: $symbol = ' '; # default to space
1495: #
1496: my $awarded = 0;
1497: if (exists($resource_data->{'resource.'.$part.'.awarded'})) {
1498: $awarded = $resource_data->{'resource.'.$part.'.awarded'};
1499: }
1500: #
1501: $partscore = $weight*$awarded;
1502: $score += $partscore;
1503: $symbol = $partscore;
1504: if (length($symbol) > 1) {
1505: $symbol = '*';
1506: }
1507: if (exists($resource_data->{'resource.'.$part.'.solved'})) {
1508: my $status = $resource_data->{'resource.'.$part.'.solved'};
1509: if ($status eq 'excused') {
1510: $symbol = 'x';
1511: $max -= $weight; # Do not count 'excused' problems.
1512: }
1513: } else {
1514: # Unsolved. Did they try?
1515: if (exists($resource_data->{'resource.'.$part.'.tries'})){
1516: $symbol = '.';
1517: } else {
1518: $symbol = ' ';
1519: }
1520: }
1521: #
1522: if (! defined($partscore)) {
1523: $partscore = $symbol;
1524: }
1525: push (@ScoreData,$partscore);
1526: #
1527: if ( ($links eq 'yes' && $symbol ne ' ') || ($links eq 'all')) {
1528: $symbol = '<a href="/adm/grades'.
1529: '?symb='.&Apache::lonnet::escape($resource->{'symb'}).
1530: '&student='.$student->{'username'}.
1531: '&domain='.$student->{'domain'}.
1532: '&command=submission">'.$symbol.'</a>';
1533: }
1534: $Str .= $symbol;
1535: }
1536: }
1537: return ($Str,$performance_length,$score,$max,\@ScoreData);
1538: }
1539:
1540: #######################################################
1541: #######################################################
1542:
1543: =pod
1544:
1545: =item &CreateLegend()
1546:
1547: This function returns a formatted string containing the legend for the
1548: chart. The legend describes the symbols used to represent grades for
1549: problems.
1550:
1551: =cut
1552:
1553: #######################################################
1554: #######################################################
1555: sub CreateLegend {
1556: my $Str = "<p><pre>".
1557: " 1 correct by student in 1 try\n".
1558: " 7 correct by student in 7 tries\n".
1559: " * correct by student in more than 9 tries\n".
1560: " + correct by hand grading or override\n".
1561: " - incorrect by override\n".
1562: " . incorrect attempted\n".
1563: " # ungraded attempted\n".
1564: " not attempted (blank field)\n".
1565: " x excused".
1566: "</pre><p>";
1567: return $Str;
1568: }
1569:
1570: #######################################################
1571: #######################################################
1572:
1573: =pod
1574:
1575: =back
1576:
1577: =cut
1578:
1579: #######################################################
1580: #######################################################
1581:
1582: 1;
1583:
1584: __END__
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