1: # The LearningOnline Network with CAPA
2: #
3: # $Id: lonstudentassessment.pm,v 1.65 2003/09/03 17:45:49 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,$c)=@_;
141:
142: undef($Statistics);
143:
144: $single_student_mode = 0;
145: $single_student_mode = 1 if ($ENV{'form.SelectedStudent'});
146: if ($ENV{'form.selectstudent'}) {
147: &Apache::lonstatistics::DisplayClasslist($r);
148: return;
149: }
150: #
151: # Print out the HTML headers for the interface
152: # This also parses the output mode selector
153: # This step must *always* be done.
154: $r->print(&CreateInterface());
155: $r->print('<input type="hidden" name="notfirstrun" value="true" />');
156: $r->print('<input type="hidden" name="sort" value="'.
157: $ENV{'form.sort'}.'" />');
158: $r->rflush();
159: #
160: if (! exists($ENV{'form.notfirstrun'}) && ! $single_student_mode) {
161: return;
162: }
163: #
164: my $initialize = \&html_initialize;
165: my $output_student = \&html_outputstudent;
166: my $finish = \&html_finish;
167: #
168: if ($output_mode eq 'excel') {
169: $initialize = \&excel_initialize;
170: $output_student = \&excel_outputstudent;
171: $finish = \&excel_finish;
172: } elsif ($output_mode eq 'csv') {
173: $initialize = \&csv_initialize;
174: $output_student = \&csv_outputstudent;
175: $finish = \&csv_finish;
176: }
177: #
178: if($c->aborted()) { return ; }
179: #
180: # Determine which students we want to look at
181: my @Students;
182: if ($single_student_mode) {
183: @Students = (&Apache::lonstatistics::current_student());
184: $r->print(&next_and_previous_buttons());
185: $r->rflush();
186: } else {
187: @Students = @Apache::lonstatistics::Students;
188: }
189: #
190: # Perform generic initialization tasks
191: # Since we use lonnet::EXT to retrieve problem weights,
192: # to ensure current data we must clear the caches out.
193: # This makes sure that parameter changes at the student level
194: # are immediately reflected in the chart.
195: &Apache::lonnet::clear_EXT_cache_status();
196: #
197: # Call the initialize routine selected above
198: $initialize->($r);
199: foreach my $student (@Students) {
200: if($c->aborted()) {
201: $finish->($r);
202: return ;
203: }
204: # Call the output_student routine selected above
205: $output_student->($r,$student);
206: }
207: # Call the "finish" routine selected above
208: $finish->($r);
209: #
210: return;
211: }
212:
213: #######################################################
214: #######################################################
215: sub next_and_previous_buttons {
216: my $Str = '';
217: $Str .= '<input type="hidden" name="SelectedStudent" value="'.
218: $ENV{'form.SelectedStudent'}.'" />';
219: #
220: # Build the previous student link
221: my $previous = &Apache::lonstatistics::previous_student();
222: my $previousbutton = '';
223: if (defined($previous)) {
224: my $sname = $previous->{'username'}.':'.$previous->{'domain'};
225: $previousbutton .= '<input type="button" value="'.
226: 'Previous Student ('.
227: $previous->{'username'}.'@'.$previous->{'domain'}.')'.
228: '" onclick="document.Statistics.SelectedStudent.value='.
229: "'".$sname."'".';'.
230: 'document.Statistics.submit();" />';
231: } else {
232: $previousbutton .= '<input type="button" value="'.
233: 'Previous student (none)'.'" />';
234: }
235: #
236: # Build the next student link
237: my $next = &Apache::lonstatistics::next_student();
238: my $nextbutton = '';
239: if (defined($next)) {
240: my $sname = $next->{'username'}.':'.$next->{'domain'};
241: $nextbutton .= '<input type="button" value="'.
242: 'Next Student ('.
243: $next->{'username'}.'@'.$next->{'domain'}.')'.
244: '" onclick="document.Statistics.SelectedStudent.value='.
245: "'".$sname."'".';'.
246: 'document.Statistics.submit();" />';
247: } else {
248: $nextbutton .= '<input type="button" value="'.
249: 'Next student (none)'.'" />';
250: }
251: #
252: # Build the 'all students' button
253: my $all = '';
254: $all .= '<input type="button" value="All Students" '.
255: '" onclick="document.Statistics.SelectedStudent.value='.
256: "''".';'.'document.Statistics.submit();" />';
257: $Str .= $previousbutton.(' 'x5).$all.(' 'x5).$nextbutton;
258: return $Str;
259: }
260:
261: #######################################################
262: #######################################################
263:
264: sub get_student_fields_to_show {
265: my @to_show = @Apache::lonstatistics::SelectedStudentData;
266: foreach (@to_show) {
267: if ($_ eq 'all') {
268: @to_show = @Apache::lonstatistics::StudentDataOrder;
269: last;
270: }
271: }
272: return @to_show;
273: }
274:
275: #######################################################
276: #######################################################
277:
278: =pod
279:
280: =item &CreateInterface()
281:
282: Called by &BuildStudentAssessmentPage to create the top part of the
283: page which displays the chart.
284:
285: Inputs: None
286:
287: Returns: A string containing the HTML for the headers and top table for
288: the chart page.
289:
290: =cut
291:
292: #######################################################
293: #######################################################
294: sub CreateInterface {
295: my $Str = '';
296: # $Str .= &CreateLegend();
297: $Str .= '<table cellspacing="5">'."\n";
298: $Str .= '<tr>';
299: $Str .= '<td align="center"><b>Sections</b></td>';
300: $Str .= '<td align="center"><b>Student Data</b></td>';
301: $Str .= '<td align="center"><b>Enrollment Status</b></td>';
302: $Str .= '<td align="center"><b>Sequences and Folders</b></td>';
303: $Str .= '<td align="center"><b>Output Format</b>'.
304: &Apache::loncommon::help_open_topic("Chart_Output_Formats").
305: '</td>';
306: $Str .= '<td align="center"><b>Output Data</b>'.
307: &Apache::loncommon::help_open_topic("Chart_Output_Data").
308: '</td>';
309: $Str .= '</tr>'."\n";
310: #
311: $Str .= '<tr><td align="center">'."\n";
312: $Str .= &Apache::lonstatistics::SectionSelect('Section','multiple',5);
313: $Str .= '</td><td align="center">';
314: my $only_seq_with_assessments = sub {
315: my $s=shift;
316: if ($s->{'num_assess'} < 1) {
317: return 0;
318: } else {
319: return 1;
320: }
321: };
322: $Str .= &Apache::lonstatistics::StudentDataSelect('StudentData','multiple',
323: 5,undef);
324: $Str .= '</td><td>'."\n";
325: $Str .= &Apache::lonhtmlcommon::StatusOptions(undef,undef,5);
326: $Str .= '</td><td>'."\n";
327: $Str .= &Apache::lonstatistics::MapSelect('Maps','multiple,all',5,
328: $only_seq_with_assessments);
329: $Str .= '</td><td>'."\n";
330: $Str .= &CreateAndParseOutputSelector();
331: $Str .= '</td><td>'."\n";
332: $Str .= &CreateAndParseOutputDataSelector();
333: $Str .= '</td></tr>'."\n";
334: $Str .= '</table>'."\n";
335: $Str .= '<input type="submit" value="Generate Chart" />';
336: $Str .= ' 'x5;
337: $Str .= '<input type="submit" name="selectstudent" '.
338: 'value="Select One Student" />';
339: $Str .= ' 'x5;
340: $Str .= '<input type="submit" name="ClearCache" value="Clear Caches" />';
341: $Str .= ' 'x5;
342: $Str .= '<br />';
343: return $Str;
344: }
345:
346: #######################################################
347: #######################################################
348:
349: =pod
350:
351: =item &CreateAndParseOutputSelector()
352:
353: =cut
354:
355: #######################################################
356: #######################################################
357: my @OutputOptions =
358: ({ name => 'HTML, with links',
359: value => 'html, with links',
360: description => 'Output HTML with each symbol linked to the problem '.
361: 'which generated it.',
362: mode => 'html',
363: show_links => 'yes',
364: },
365: { name => 'HTML, with all links',
366: value => 'html, with all links',
367: description => 'Output HTML with each symbol linked to the problem '.
368: 'which generated it. '.
369: 'This includes links for unattempted problems.',
370: mode => 'html',
371: show_links => 'all',
372: },
373: { name => 'HTML, without links',
374: value => 'html, without links',
375: description => 'Output HTML. By not including links, the size of the'.
376: ' web page is greatly reduced. If your browser crashes on the '.
377: 'full display, try this.',
378: mode => 'html',
379: show_links => 'no',
380: },
381: { name => 'Excel',
382: value => 'excel',
383: description => 'Output an Excel file (compatable with Excel 95).',
384: mode => 'excel',
385: show_links => 'no',
386: },
387: { name => 'CSV',
388: value => 'csv',
389: description => 'Output a comma seperated values file suitable for '.
390: 'import into a spreadsheet program. Using this method as opposed '.
391: 'to Excel output allows you to organize your data before importing'.
392: ' it into a spreadsheet program.',
393: mode => 'csv',
394: show_links => 'no',
395: },
396: );
397:
398: sub OutputDescriptions {
399: my $Str = '';
400: $Str .= "<h2>Output Formats</h2>\n";
401: $Str .= "<dl>\n";
402: foreach my $outputmode (@OutputOptions) {
403: $Str .=" <dt>".$outputmode->{'name'}."</dt>\n";
404: $Str .=" <dd>".$outputmode->{'description'}."</dd>\n";
405: }
406: $Str .= "</dl>\n";
407: return $Str;
408: }
409:
410: sub CreateAndParseOutputSelector {
411: my $Str = '';
412: my $elementname = 'chartoutputmode';
413: #
414: # Format for output options is 'mode, restrictions';
415: my $selected = 'html, without links';
416: if (exists($ENV{'form.'.$elementname})) {
417: if (ref($ENV{'form.'.$elementname} eq 'ARRAY')) {
418: $selected = $ENV{'form.'.$elementname}->[0];
419: } else {
420: $selected = $ENV{'form.'.$elementname};
421: }
422: }
423: #
424: # Set package variables describing output mode
425: $show_links = 'no';
426: $output_mode = 'html';
427: foreach my $option (@OutputOptions) {
428: next if ($option->{'value'} ne $selected);
429: $output_mode = $option->{'mode'};
430: $show_links = $option->{'show_links'};
431: }
432:
433: #
434: # Build the form element
435: $Str = qq/<select size="5" name="$elementname">/;
436: foreach my $option (@OutputOptions) {
437: $Str .= "\n".' <option value="'.$option->{'value'}.'"';
438: $Str .= " selected " if ($option->{'value'} eq $selected);
439: $Str .= ">".$option->{'name'}."<\/option>";
440: }
441: $Str .= "\n</select>";
442: return $Str;
443: }
444:
445: ##
446: ## Data selector stuff
447: ##
448: my @OutputDataOptions =
449: (
450: { name => 'Scores',
451: base => 'scores',
452: value => 'scores',
453: shortdesc => 'Score on each Problem Part',
454: longdesc =>'The students score on each problem part, computed as'.
455: 'the part weight * part awarded',
456: },
457: { name => 'Scores Sum',
458: base => 'scores',
459: value => 'sum only',
460: shortdesc => 'Sum of Scores on each Problem Part',
461: longdesc =>'The total of the scores of the student on each problem'.
462: ' part in the sequences or folders selected.',
463: },
464: { name => 'Scores Sum & Maximums',
465: base => 'scores',
466: value => 'sum and total',
467: shortdesc => 'Total Score and Maximum Possible for each '.
468: 'Sequence or Folder',
469: longdesc => 'The score of each student as well as the '.
470: ' maximum possible on each Sequence or Folder.',
471: },
472: { name => 'Scores Summary Table Only',
473: base => 'scores',
474: value => 'final table scores',
475: shortdesc => 'Summary of Scores',
476: longdesc => 'The average score on each sequence or folder for the '.
477: 'selected students.',
478: },
479: { name =>'Tries',
480: base =>'tries',
481: value => 'tries',
482: shortdesc => 'Number of Tries before success on each Problem Part',
483: longdesc =>'The number of tries before success on each problem part.',
484: },
485: { name =>'Parts Correct',
486: base =>'tries',
487: value => 'parts correct',
488: shortdesc => 'Number of Problem Parts completed successfully.',
489: longdesc => 'The Number of Problem Parts completed successfully'.
490: ' on each sequence or folder.',
491: },
492: { name =>'Parts Correct & Maximums',
493: base =>'tries',
494: value => 'parts correct total',
495: shortdesc => 'Number of Problem Parts completed successfully.',
496: longdesc => 'The Number of Problem Parts completed successfully and '.
497: 'the maximum possible for each student',
498: },
499: { name => 'Parts Summary Table Only',
500: base => 'tries',
501: value => 'final table parts',
502: shortdesc => 'Summary of Parts Correct',
503: longdesc => 'A summary table of the average number of problem parts '.
504: 'students were able to get correct on each sequence.',
505: },
506: );
507:
508: sub HTMLifyOutputDataDescriptions {
509: my $Str = '';
510: $Str .= "<h2>Output Data</h2>\n";
511: $Str .= "<dl>\n";
512: foreach my $option (@OutputDataOptions) {
513: $Str .= ' <dt>'.$option->{'name'}.'</dt>';
514: $Str .= '<dd>'.$option->{'longdesc'}.'</dd>'."\n";
515: }
516: $Str .= "</dl>\n";
517: return $Str;
518: }
519:
520: sub CreateAndParseOutputDataSelector {
521: my $Str = '';
522: my $elementname = 'chartoutputdata';
523: #
524: my $selected = 'scores';
525: if (exists($ENV{'form.'.$elementname})) {
526: if (ref($ENV{'form.'.$elementname} eq 'ARRAY')) {
527: $selected = $ENV{'form.'.$elementname}->[0];
528: } else {
529: $selected = $ENV{'form.'.$elementname};
530: }
531: }
532: #
533: $data = 'scores';
534: foreach my $option (@OutputDataOptions) {
535: if ($option->{'value'} eq $selected) {
536: $data = $option->{'value'};
537: $base = $option->{'base'};
538: $datadescription = $option->{'shortdesc'};
539: }
540: }
541: #
542: # Build the form element
543: $Str = qq/<select size="5" name="$elementname">/;
544: foreach my $option (@OutputDataOptions) {
545: $Str .= "\n".' <option value="'.$option->{'value'}.'"';
546: $Str .= " selected " if ($option->{'value'} eq $data);
547: $Str .= ">".$option->{'name'}."<\/option>";
548: }
549: $Str .= "\n</select>";
550: return $Str;
551:
552: }
553:
554: #######################################################
555: #######################################################
556:
557: =pod
558:
559: =head2 HTML output routines
560:
561: =item &html_initialize($r)
562:
563: Create labels for the columns of student data to show.
564:
565: =item &html_outputstudent($r,$student)
566:
567: Return a line of the chart for a student.
568:
569: =item &html_finish($r)
570:
571: =cut
572:
573: #######################################################
574: #######################################################
575: {
576: my $padding;
577: my $count;
578:
579: my $nodata_count; # The number of students for which there is no data
580: my %prog_state; # progress state used by loncommon PrgWin routines
581:
582: sub html_initialize {
583: my ($r) = @_;
584: #
585: $padding = ' 'x3;
586: $count = 0;
587: $nodata_count = 0;
588: #
589: $r->print("<h3>".$ENV{'course.'.$ENV{'request.course.id'}.'.description'}.
590: " ".localtime(time)."</h3>");
591:
592: if ($data !~ /^final table/) {
593: $r->print("<h3>".$datadescription."</h3>");
594: }
595: #
596: # Set up progress window for 'final table' display only
597: if ($data =~ /^final table/) {
598: my $studentcount = scalar(@Apache::lonstatistics::Students);
599: %prog_state=&Apache::lonhtmlcommon::Create_PrgWin
600: ($r,'Summary Table Status',
601: 'Summary Table Compilation Progress', $studentcount);
602: }
603: my $Str = "<pre>\n";
604: # First, the @StudentData fields need to be listed
605: my @to_show = &get_student_fields_to_show();
606: foreach my $field (@to_show) {
607: my $title=$Apache::lonstatistics::StudentData{$field}->{'title'};
608: my $base =$Apache::lonstatistics::StudentData{$field}->{'base_width'};
609: my $width=$Apache::lonstatistics::StudentData{$field}->{'width'};
610: $Str .= $title.' 'x($width-$base).$padding;
611: }
612: # Now the selected sequences need to be listed
613: foreach my $sequence (&Apache::lonstatistics::Sequences_with_Assess()){
614: my $title = $sequence->{'title'};
615: my $base = $sequence->{'base_width'};
616: my $width = $sequence->{'width'};
617: $Str .= $title.' 'x($width-$base).$padding;
618: }
619: $Str .= "total</pre>\n";
620: $Str .= "<pre>";
621: #
622: # Check for suppression of output
623: if ($data =~ /^final table/) {
624: $Str = '';
625: }
626: $r->print($Str);
627: $r->rflush();
628: return;
629: }
630:
631: sub html_outputstudent {
632: my ($r,$student) = @_;
633: my $Str = '';
634: #
635: if($count++ % 5 == 0 && $count > 0 && $data !~ /^final table/) {
636: $r->print("</pre><pre>");
637: }
638: # First, the @StudentData fields need to be listed
639: my @to_show = &get_student_fields_to_show();
640: foreach my $field (@to_show) {
641: my $title=$student->{$field};
642: my $base = length($title);
643: my $width=$Apache::lonstatistics::StudentData{$field}->{'width'};
644: $Str .= $title.' 'x($width-$base).$padding;
645: }
646: # Get ALL the students data
647: my %StudentsData;
648: my @tmp = &Apache::loncoursedata::get_current_state
649: ($student->{'username'},$student->{'domain'},undef,
650: $ENV{'request.course.id'});
651: if ((scalar @tmp > 0) && ($tmp[0] !~ /^error:/)) {
652: %StudentsData = @tmp;
653: }
654: if (scalar(@tmp) < 1) {
655: $nodata_count++;
656: return if ($data =~ /^final table/);
657: $Str .= '<font color="blue">No Course Data</font>'."\n";
658: $r->print($Str);
659: $r->rflush();
660: return;
661: }
662: #
663: # By sequence build up the data
664: my $studentstats;
665: my $PerformanceStr = '';
666: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
667: my ($performance,$performance_length,$score,$seq_max,$rawdata);
668: if ($base eq 'tries') {
669: ($performance,$performance_length,$score,$seq_max,$rawdata) =
670: &StudentTriesOnSequence($student,\%StudentsData,
671: $seq,$show_links);
672: } else {
673: ($performance,$performance_length,$score,$seq_max,$rawdata) =
674: &StudentPerformanceOnSequence($student,\%StudentsData,
675: $seq,$show_links);
676: }
677: my $ratio = sprintf("%3d",$score).'/'.sprintf("%3d",$seq_max);
678: #
679: if ($data eq 'sum and total' || $data eq 'parts correct total') {
680: $performance = $ratio;
681: $performance .= ' 'x($seq->{'width'}-length($ratio));
682: } elsif ($data eq 'sum only' || $data eq 'parts correct') {
683: $performance = $score;
684: $performance .= ' 'x($seq->{'width'}-length($score));
685: } else {
686: # Pad with extra spaces
687: $performance .= ' 'x($seq->{'width'}-$performance_length-
688: length($ratio)
689: ).$ratio;
690: }
691: #
692: $Str .= $performance.$padding;
693: #
694: $studentstats->{$seq->{'symb'}}->{'score'}= $score;
695: $studentstats->{$seq->{'symb'}}->{'max'} = $seq_max;
696: }
697: #
698: # Total it up and store the statistics info.
699: my ($score,$max) = (0,0);
700: while (my ($symb,$seq_stats) = each (%{$studentstats})) {
701: $Statistics->{$symb}->{'score'} += $seq_stats->{'score'};
702: if ($Statistics->{$symb}->{'max'} < $seq_stats->{'max'}) {
703: $Statistics->{$symb}->{'max'} = $seq_stats->{'max'};
704: }
705: $score += $seq_stats->{'score'};
706: $max += $seq_stats->{'max'};
707: }
708: $Str .= ' '.' 'x(length($max)-length($score)).$score.'/'.$max;
709: $Str .= " \n";
710: #
711: # Check for suppressed output and update the progress window if so...
712: if ($data =~ /^final table/) {
713: $Str = '';
714: &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
715: 'last student');
716: }
717: #
718: $r->print($Str);
719: #
720: $r->rflush();
721: return;
722: }
723:
724: sub html_finish {
725: my ($r) = @_;
726: #
727: # Check for suppressed output and close the progress window if so
728: if ($data =~ /^final table/) {
729: &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
730: } else {
731: $r->print("</pre>\n");
732: }
733: if ($single_student_mode) {
734: $r->print(&SingleStudentTotal());
735: } else {
736: $r->print(&StudentAverageTotal());
737: }
738: $r->rflush();
739: return;
740: }
741:
742: sub StudentAverageTotal {
743: my $Str = "<h3>Summary Tables</h3>\n";
744: my $num_students = scalar(@Apache::lonstatistics::Students);
745: my $total_ave = 0;
746: my $total_max = 0;
747: $Str .= '<table border=2 cellspacing="1">'."\n";
748: $Str .= "<tr><th>Title</th><th>Average</th><th>Maximum</th></tr>\n";
749: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
750: my $ave;
751: if ($num_students > $nodata_count) {
752: $ave = int(100*($Statistics->{$seq->{'symb'}}->{'score'}/
753: ($num_students-$nodata_count)))/100;
754: } else {
755: $ave = 0;
756: }
757: $total_ave += $ave;
758: my $max = $Statistics->{$seq->{'symb'}}->{'max'};
759: $total_max += $max;
760: if ($ave == 0) {
761: $ave = "0.00";
762: }
763: $ave .= ' ';
764: $max .= ' ';
765: $Str .= '<tr><td>'.$seq->{'title'}.'</td>'.
766: '<td align="right">'.$ave.'</td>'.
767: '<td align="right">'.$max.'</td></tr>'."\n";
768: }
769: $total_ave = int(100*$total_ave)/100; # only two digit
770: $Str .= "</table>\n";
771: $Str .= '<table border=2 cellspacing="1">'."\n";
772: $Str .= '<tr><th>Number of Students</th><th>Average</th>'.
773: "<th>Maximum</th></tr>\n";
774: $Str .= '<tr><td>'.($num_students-$nodata_count).'</td>'.
775: '<td>'.$total_ave.'</td><td>'.$total_max.'</td>';
776: $Str .= "</table>\n";
777: return $Str;
778: }
779:
780: sub SingleStudentTotal {
781: my $student = &Apache::lonstatistics::current_student();
782: my $Str = "<h3>Summary table for ".$student->{'fullname'}." ".
783: $student->{'username'}.'@'.$student->{'domain'}."</h3>\n";
784: $Str .= '<table border=2 cellspacing="1">'."\n";
785: $Str .=
786: "<tr><th>Sequence or Folder</th><th>Score</th><th>Maximum</th></tr>\n";
787: my $total = 0;
788: my $total_max = 0;
789: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
790: my $value = $Statistics->{$seq->{'symb'}}->{'score'};
791: my $max = $Statistics->{$seq->{'symb'}}->{'max'};
792: $Str .= '<tr><td>'.$seq->{'title'}.'</td>'.
793: '<td align="right">'.$value.'</td>'.
794: '<td align="right">'.$max.'</td></tr>'."\n";
795: $total += $value;
796: $total_max +=$max;
797: }
798: $Str .= '<tr><td><b>Total</b></td>'.
799: '<td align="right">'.$total.'</td>'.
800: '<td align="right">'.$total_max."</td></tr>\n";
801: $Str .= "</table>\n";
802: return $Str;
803: }
804:
805: }
806:
807: #######################################################
808: #######################################################
809:
810: =pod
811:
812: =head2 EXCEL subroutines
813:
814: =item &excel_initialize($r)
815:
816: =item &excel_outputstudent($r,$student)
817:
818: =item &excel_finish($r)
819:
820: =cut
821:
822: #######################################################
823: #######################################################
824: {
825:
826: my $excel_sheet;
827: my $excel_workbook;
828:
829: my $filename;
830: my $rows_output;
831: my $cols_output;
832:
833: my %prog_state; # progress window state
834: my $request_aborted;
835:
836: sub excel_initialize {
837: my ($r) = @_;
838: #
839: $request_aborted = undef;
840: my $total_columns = scalar(&get_student_fields_to_show());
841: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
842: # Add 2 because we need a 'sum' and 'total' column for each
843: $total_columns += $seq->{'num_assess_parts'}+2;
844: }
845: if ($data eq 'tries' && $total_columns > 255) {
846: $r->print(<<END);
847: <h2>Unable to Complete Request</h2>
848: <p>
849: LON-CAPA is unable to produce your Excel spreadsheet because your selections
850: will result in more than 255 columns. Excel allows only 255 columns in a
851: spreadsheet.
852: </p><p>
853: You may consider reducing the number of <b>Sequences or Folders</b> you
854: have selected.
855: </p><p>
856: LON-CAPA can produce <b>CSV</b> files of this data or Excel files of the
857: summary data (<b>Parts Correct</b> or <b>Parts Correct & Totals</b>).
858: </p>
859: END
860: $request_aborted = 1;
861: }
862: if ($data eq 'scores' && $total_columns > 255) {
863: $r->print(<<END);
864: <h2>Unable to Complete Request</h2>
865: <p>
866: LON-CAPA is unable to produce your Excel spreadsheet because your selections
867: will result in more than 255 columns. Excel allows only 255 columns in a
868: spreadsheet.
869: </p><p>
870: You may consider reducing the number of <b>Sequences or Folders</b> you
871: have selected.
872: </p><p>
873: LON-CAPA can produce <b>CSV</b> files of this data or Excel files of the
874: summary data (<b>Scores Sum</b> or <b>Scores Sum & Totals</b>).
875: </p>
876: END
877: $request_aborted = 1;
878: }
879: if ($data =~ /^final table/) {
880: $r->print(<<END);
881: <h2>Unable to Complete Request</h2>
882: <p>
883: The <b>Summary Table (Scores)</b> option is not available for non-HTML output.
884: </p>
885: END
886: $request_aborted = 1;
887: }
888: return if ($request_aborted);
889: #
890: $filename = '/prtspool/'.
891: $ENV{'user.name'}.'_'.$ENV{'user.domain'}.'_'.
892: time.'_'.rand(1000000000).'.xls';
893: #
894: $excel_workbook = undef;
895: $excel_sheet = undef;
896: #
897: $rows_output = 0;
898: $cols_output = 0;
899: #
900: # Create sheet
901: $excel_workbook = Spreadsheet::WriteExcel->new('/home/httpd'.$filename);
902: #
903: # Check for errors
904: if (! defined($excel_workbook)) {
905: $r->log_error("Error creating excel spreadsheet $filename: $!");
906: $r->print("Problems creating new Excel file. ".
907: "This error has been logged. ".
908: "Please alert your LON-CAPA administrator");
909: return ;
910: }
911: #
912: # The excel spreadsheet stores temporary data in files, then put them
913: # together. If needed we should be able to disable this (memory only).
914: # The temporary directory must be specified before calling 'addworksheet'.
915: # File::Temp is used to determine the temporary directory.
916: $excel_workbook->set_tempdir($Apache::lonnet::tmpdir);
917: #
918: # Add a worksheet
919: my $sheetname = $ENV{'course.'.$ENV{'request.course.id'}.'.description'};
920: if (length($sheetname) > 31) {
921: $sheetname = substr($sheetname,0,31);
922: }
923: $excel_sheet = $excel_workbook->addworksheet($sheetname);
924: #
925: # Put the course description in the header
926: $excel_sheet->write($rows_output,$cols_output++,
927: $ENV{'course.'.$ENV{'request.course.id'}.'.description'});
928: $cols_output += 3;
929: #
930: # Put a description of the sections listed
931: my $sectionstring = '';
932: my @Sections = @Apache::lonstatistics::SelectedSections;
933: if (scalar(@Sections) > 1) {
934: if (scalar(@Sections) > 2) {
935: my $last = pop(@Sections);
936: $sectionstring = "Sections ".join(', ',@Sections).', and '.$last;
937: } else {
938: $sectionstring = "Sections ".join(' and ',@Sections);
939: }
940: } else {
941: if ($Sections[0] eq 'all') {
942: $sectionstring = "All sections";
943: } else {
944: $sectionstring = "Section ".$Sections[0];
945: }
946: }
947: $excel_sheet->write($rows_output,$cols_output++,$sectionstring);
948: $cols_output += scalar(@Sections);
949: #
950: # Put the date in there too
951: $excel_sheet->write($rows_output++,$cols_output++,
952: 'Compiled on '.localtime(time));
953: #
954: $cols_output = 0;
955: $excel_sheet->write($rows_output++,$cols_output++,$datadescription);
956: #
957: if ($data eq 'tries' || $data eq 'scores') {
958: $rows_output++;
959: }
960: #
961: # Add the student headers
962: $cols_output = 0;
963: foreach my $field (&get_student_fields_to_show()) {
964: $excel_sheet->write($rows_output,$cols_output++,$field);
965: }
966: my $row_offset = 0;
967: if ($data eq 'tries' || $data eq 'scores') {
968: $row_offset = -1;
969: }
970: #
971: # Add the remaining column headers
972: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
973: $excel_sheet->write($rows_output+$row_offset,
974: $cols_output,$seq->{'title'});
975: if ($data eq 'tries' || $data eq 'scores') {
976: foreach my $res (@{$seq->{'contents'}}) {
977: next if ($res->{'type'} ne 'assessment');
978: if (scalar(@{$res->{'parts'}}) > 1) {
979: foreach my $part (@{$res->{'parts'}}) {
980: $excel_sheet->write($rows_output,
981: $cols_output++,
982: $res->{'title'}.' part '.$part);
983: }
984: } else {
985: $excel_sheet->write($rows_output,
986: $cols_output++,
987: $res->{'title'});
988: }
989: }
990: $excel_sheet->write($rows_output,$cols_output++,'score');
991: $excel_sheet->write($rows_output,$cols_output++,'maximum');
992: } elsif ($data eq 'sum and total' || $data eq 'parts correct total') {
993: $excel_sheet->write($rows_output+1,$cols_output,'score');
994: $excel_sheet->write($rows_output+1,$cols_output+1,'maximum');
995: $cols_output += 2;
996: } else {
997: $cols_output++;
998: }
999: }
1000: #
1001: # Bookkeeping
1002: if ($data eq 'sum and total' || $data eq 'parts correct total') {
1003: $rows_output += 2;
1004: } else {
1005: $rows_output += 1;
1006: }
1007: #
1008: # Output a row for MAX
1009: $cols_output = 0;
1010: foreach my $field (&get_student_fields_to_show()) {
1011: if ($field eq 'username' || $field eq 'fullname' ||
1012: $field eq 'id') {
1013: $excel_sheet->write($rows_output,$cols_output++,'Maximum');
1014: } else {
1015: $excel_sheet->write($rows_output,$cols_output++,'');
1016: }
1017: }
1018: #
1019: # Add the maximums for each sequence or assessment
1020: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
1021: my $weight;
1022: my $max = 0;
1023: foreach my $resource (@{$seq->{'contents'}}) {
1024: next if ($resource->{'type'} ne 'assessment');
1025: foreach my $part (@{$resource->{'parts'}}) {
1026: $weight = 1;
1027: if ($base eq 'scores') {
1028: $weight = &Apache::lonnet::EXT
1029: ('resource.'.$part.'.weight',$resource->{'symb'},
1030: undef,undef,undef);
1031: if (!defined($weight) || ($weight eq '')) {
1032: $weight=1;
1033: }
1034: }
1035: if ($data eq 'scores') {
1036: $excel_sheet->write($rows_output,$cols_output++,$weight);
1037: } elsif ($data eq 'tries') {
1038: $excel_sheet->write($rows_output,$cols_output++,'');
1039: }
1040: $max += $weight;
1041: }
1042: }
1043: if (! ($data eq 'sum only' || $data eq 'parts correct')) {
1044: $excel_sheet->write($rows_output,$cols_output++,'');
1045: }
1046: $excel_sheet->write($rows_output,$cols_output++,$max);
1047: }
1048: $rows_output++;
1049: #
1050: # Let the user know what we are doing
1051: my $studentcount = scalar(@Apache::lonstatistics::Students);
1052: $r->print("<h1>Compiling Excel spreadsheet for ".
1053: $studentcount.' student');
1054: $r->print('s') if ($studentcount > 1);
1055: $r->print("</h1>\n");
1056: $r->rflush();
1057: #
1058: # Initialize progress window
1059: %prog_state=&Apache::lonhtmlcommon::Create_PrgWin
1060: ($r,'Excel File Compilation Status',
1061: 'Excel File Compilation Progress', $studentcount);
1062: #
1063: &Apache::lonhtmlcommon::Update_PrgWin($r,\%prog_state,
1064: 'Processing first student');
1065: return;
1066: }
1067:
1068: sub excel_outputstudent {
1069: my ($r,$student) = @_;
1070: return if ($request_aborted);
1071: return if (! defined($excel_sheet));
1072: $cols_output=0;
1073: #
1074: # Write out student data
1075: my @to_show = &get_student_fields_to_show();
1076: foreach my $field (@to_show) {
1077: $excel_sheet->write($rows_output,$cols_output++,$student->{$field});
1078: }
1079: #
1080: # Get student assessment data
1081: my %StudentsData;
1082: my @tmp = &Apache::loncoursedata::get_current_state($student->{'username'},
1083: $student->{'domain'},
1084: undef,
1085: $ENV{'request.course.id'});
1086: if ((scalar @tmp > 0) && ($tmp[0] !~ /^error:/)) {
1087: %StudentsData = @tmp;
1088: }
1089: #
1090: # Write out sequence scores and totals data
1091: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
1092: my ($performance,$performance_length,$score,$seq_max,$rawdata);
1093: if ($base eq 'tries') {
1094: ($performance,$performance_length,$score,$seq_max,$rawdata) =
1095: &StudentTriesOnSequence($student,\%StudentsData,
1096: $seq,'no');
1097: } else {
1098: ($performance,$performance_length,$score,$seq_max,$rawdata) =
1099: &StudentPerformanceOnSequence($student,\%StudentsData,
1100: $seq,'no');
1101: }
1102: if ($data eq 'tries' || $data eq 'scores') {
1103: foreach my $value (@$rawdata) {
1104: $excel_sheet->write($rows_output,$cols_output++,$value);
1105: }
1106: $excel_sheet->write($rows_output,$cols_output++,$score);
1107: $excel_sheet->write($rows_output,$cols_output++,$seq_max);
1108: } elsif ($data eq 'sum and total' || $data eq 'sum only' ||
1109: $data eq 'parts correct' || $data eq 'parts correct total') {
1110: $excel_sheet->write($rows_output,$cols_output++,$score);
1111: }
1112: if ($data eq 'sum and total' || $data eq 'parts correct total') {
1113: $excel_sheet->write($rows_output,$cols_output++,$seq_max);
1114: }
1115: }
1116: #
1117: # Bookkeeping
1118: $rows_output++;
1119: $cols_output=0;
1120: #
1121: # Update the progress window
1122: &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,'last student');
1123: return;
1124: }
1125:
1126: sub excel_finish {
1127: my ($r) = @_;
1128: return if ($request_aborted);
1129: return if (! defined($excel_sheet));
1130: #
1131: # Write the excel file
1132: $excel_workbook->close();
1133: my $c = $r->connection();
1134: #
1135: return if($c->aborted());
1136: #
1137: # Close the progress window
1138: &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
1139: #
1140: # Tell the user where to get their excel file
1141: $r->print('<br />'.
1142: '<a href="'.$filename.'">Your Excel spreadsheet.</a>'."\n");
1143: $r->rflush();
1144: return;
1145: }
1146:
1147: }
1148: #######################################################
1149: #######################################################
1150:
1151: =pod
1152:
1153: =head2 CSV output routines
1154:
1155: =item &csv_initialize($r)
1156:
1157: =item &csv_outputstudent($r,$student)
1158:
1159: =item &csv_finish($r)
1160:
1161: =cut
1162:
1163: #######################################################
1164: #######################################################
1165: {
1166:
1167: my $outputfile;
1168: my $filename;
1169: my $request_aborted;
1170: my %prog_state; # progress window state
1171:
1172: sub csv_initialize{
1173: my ($r) = @_;
1174: #
1175: # Clean up
1176: $filename = undef;
1177: $outputfile = undef;
1178: undef(%prog_state);
1179: #
1180: # Deal with unimplemented requests
1181: $request_aborted = undef;
1182: if ($data =~ /final table/) {
1183: $r->print(<<END);
1184: <h2>Unable to Complete Request</h2>
1185: <p>
1186: The <b>Summary Table (Scores)</b> option is not available for non-HTML output.
1187: </p>
1188: END
1189: $request_aborted = 1;
1190: }
1191: return if ($request_aborted);
1192:
1193: #
1194: # Open a file
1195: $filename = '/prtspool/'.
1196: $ENV{'user.name'}.'_'.$ENV{'user.domain'}.'_'.
1197: time.'_'.rand(1000000000).'.csv';
1198: unless ($outputfile = Apache::File->new('>/home/httpd'.$filename)) {
1199: $r->log_error("Couldn't open $filename for output $!");
1200: $r->print("Problems occured in writing the csv file. ".
1201: "This error has been logged. ".
1202: "Please alert your LON-CAPA administrator.");
1203: $outputfile = undef;
1204: }
1205: #
1206: # Datestamp
1207: my $description = $ENV{'course.'.$ENV{'request.course.id'}.'.description'};
1208: print $outputfile '"'.&Apache::loncommon::csv_translate($description).'",'.
1209: '"'.&Apache::loncommon::csv_translate(scalar(localtime(time))).'"'.
1210: "\n";
1211: #
1212: # Print out the headings
1213: my $Str = '';
1214: my $Str2 = undef;
1215: foreach my $field (&get_student_fields_to_show()) {
1216: if ($data eq 'sum only') {
1217: $Str .= '"'.&Apache::loncommon::csv_translate($field).'",';
1218: } elsif ($data eq 'sum and total' || $data eq 'parts correct total') {
1219: $Str .= '"",'; # first row empty on the student fields
1220: $Str2 .= '"'.&Apache::loncommon::csv_translate($field).'",';
1221: } elsif ($data eq 'scores' || $data eq 'tries' ||
1222: $data eq 'parts correct') {
1223: $Str .= '"",';
1224: $Str2 .= '"'.&Apache::loncommon::csv_translate($field).'",';
1225: }
1226: }
1227: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
1228: if ($data eq 'sum only' || $data eq 'parts correct') {
1229: $Str .= '"'.&Apache::loncommon::csv_translate($seq->{'title'}).
1230: '",';
1231: } elsif ($data eq 'sum and total' || $data eq 'parts correct total') {
1232: $Str .= '"'.&Apache::loncommon::csv_translate($seq->{'title'}).
1233: '","",';
1234: $Str2 .= '"score","total possible",';
1235: } elsif ($data eq 'scores' || $data eq 'tries') {
1236: $Str .= '"'.&Apache::loncommon::csv_translate($seq->{'title'}).
1237: '",';
1238: $Str .= '"",'x($seq->{'num_assess_parts'}-1+2);
1239: foreach my $res (@{$seq->{'contents'}}) {
1240: next if ($res->{'type'} ne 'assessment');
1241: foreach my $part (@{$res->{'parts'}}) {
1242: $Str2 .= '"'.&Apache::loncommon::csv_translate($res->{'title'}.', Part '.$part).'",';
1243: }
1244: }
1245: $Str2 .= '"score","total possible",';
1246: }
1247: }
1248: chop($Str);
1249: $Str .= "\n";
1250: print $outputfile $Str;
1251: if (defined($Str2)) {
1252: chop($Str2);
1253: $Str2 .= "\n";
1254: print $outputfile $Str2;
1255: }
1256: #
1257: # Initialize progress window
1258: my $studentcount = scalar(@Apache::lonstatistics::Students);
1259: %prog_state=&Apache::lonhtmlcommon::Create_PrgWin
1260: ($r,'CSV File Compilation Status',
1261: 'CSV File Compilation Progress', $studentcount);
1262: return;
1263: }
1264:
1265: sub csv_outputstudent {
1266: my ($r,$student) = @_;
1267: return if ($request_aborted);
1268: return if (! defined($outputfile));
1269: my $Str = '';
1270: #
1271: # Output student fields
1272: my @to_show = &get_student_fields_to_show();
1273: foreach my $field (@to_show) {
1274: $Str .= '"'.&Apache::loncommon::csv_translate($student->{$field}).'",';
1275: }
1276: #
1277: # Get student assessment data
1278: my %StudentsData;
1279: my @tmp = &Apache::loncoursedata::get_current_state($student->{'username'},
1280: $student->{'domain'},
1281: undef,
1282: $ENV{'request.course.id'});
1283: if ((scalar @tmp > 0) && ($tmp[0] !~ /^error:/)) {
1284: %StudentsData = @tmp;
1285: }
1286: #
1287: # Output performance data
1288: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
1289: my ($performance,$performance_length,$score,$seq_max,$rawdata);
1290: if ($base eq 'tries') {
1291: ($performance,$performance_length,$score,$seq_max,$rawdata) =
1292: &StudentTriesOnSequence($student,\%StudentsData,
1293: $seq,'no');
1294: } else {
1295: ($performance,$performance_length,$score,$seq_max,$rawdata) =
1296: &StudentPerformanceOnSequence($student,\%StudentsData,
1297: $seq,'no');
1298: }
1299: if ($data eq 'sum only' || $data eq 'parts correct') {
1300: $Str .= '"'.$score.'",';
1301: } elsif ($data eq 'sum and total' || $data eq 'parts correct total') {
1302: $Str .= '"'.$score.'","'.$seq_max.'",';
1303: } elsif ($data eq 'scores' || $data eq 'tries') {
1304: $Str .= '"'.join('","',(@$rawdata,$score,$seq_max)).'",';
1305: }
1306: }
1307: chop($Str);
1308: $Str .= "\n";
1309: print $outputfile $Str;
1310: #
1311: # Update the progress window
1312: &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,'last student');
1313: return;
1314: }
1315:
1316: sub csv_finish {
1317: my ($r) = @_;
1318: return if ($request_aborted);
1319: return if (! defined($outputfile));
1320: close($outputfile);
1321: #
1322: my $c = $r->connection();
1323: return if ($c->aborted());
1324: #
1325: # Close the progress window
1326: &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
1327: #
1328: # Tell the user where to get their csv file
1329: $r->print('<br />'.
1330: '<a href="'.$filename.'">Your csv file.</a>'."\n");
1331: $r->rflush();
1332: return;
1333:
1334: }
1335:
1336: }
1337:
1338: #######################################################
1339: #######################################################
1340:
1341: =pod
1342:
1343: =item &StudentTriesOnSequence()
1344:
1345: Inputs:
1346:
1347: =over 4
1348:
1349: =item $student
1350:
1351: =item $studentdata Hash ref to all student data
1352:
1353: =item $seq Hash ref, the sequence we are working on
1354:
1355: =item $links if defined we will output links to each resource.
1356:
1357: =back
1358:
1359: =cut
1360:
1361: #######################################################
1362: #######################################################
1363: sub StudentTriesOnSequence {
1364: my ($student,$studentdata,$seq,$links) = @_;
1365: $links = 'no' if (! defined($links));
1366: my $Str = '';
1367: my ($sum,$max) = (0,0);
1368: my $performance_length = 0;
1369: my @TriesData = ();
1370: my $tries;
1371: foreach my $resource (@{$seq->{'contents'}}) {
1372: next if ($resource->{'type'} ne 'assessment');
1373: my $resource_data = $studentdata->{$resource->{'symb'}};
1374: my $value = '';
1375: foreach my $partnum (@{$resource->{'parts'}}) {
1376: $tries = undef;
1377: $max++;
1378: $performance_length++;
1379: my $symbol = ' '; # default to space
1380: #
1381: if (exists($resource_data->{'resource.'.$partnum.'.solved'})) {
1382: my $status = $resource_data->{'resource.'.$partnum.'.solved'};
1383: if ($status eq 'correct_by_override') {
1384: $symbol = '+';
1385: $sum++;
1386: } elsif ($status eq 'incorrect_by_override') {
1387: $symbol = '-';
1388: } elsif ($status eq 'ungraded_attempted') {
1389: $symbol = '#';
1390: } elsif ($status eq 'incorrect_attempted') {
1391: $symbol = '.';
1392: } elsif ($status eq 'excused') {
1393: $symbol = 'x';
1394: $max--;
1395: } elsif ($status eq 'correct_by_student' &&
1396: exists($resource_data->{'resource.'.$partnum.'.tries'})){
1397: $tries = $resource_data->{'resource.'.$partnum.'.tries'};
1398: if ($tries > 9) {
1399: $symbol = '*';
1400: } elsif ($tries > 0) {
1401: $symbol = $tries;
1402: } else {
1403: $symbol = ' ';
1404: }
1405: $sum++;
1406: } elsif (exists($resource_data->{'resource.'.
1407: $partnum.'.tries'})){
1408: $symbol = '.';
1409: } else {
1410: $symbol = ' ';
1411: }
1412: } else {
1413: # Unsolved. Did they try?
1414: if (exists($resource_data->{'resource.'.$partnum.'.tries'})){
1415: $symbol = '.';
1416: } else {
1417: $symbol = ' ';
1418: }
1419: }
1420: #
1421: if (! defined($tries)) {
1422: $tries = $symbol;
1423: }
1424: push (@TriesData,$tries);
1425: #
1426: if ( ($links eq 'yes' && $symbol ne ' ') ||
1427: ($links eq 'all')) {
1428: if (length($symbol) > 1) {
1429: &Apache::lonnet::logthis('length of symbol "'.$symbol.'" > 1');
1430: }
1431: $symbol = '<a href="/adm/grades'.
1432: '?symb='.&Apache::lonnet::escape($resource->{'symb'}).
1433: '&student='.$student->{'username'}.
1434: '&userdom='.$student->{'domain'}.
1435: '&command=submission">'.$symbol.'</a>';
1436: }
1437: $value .= $symbol;
1438: }
1439: $Str .= $value;
1440: }
1441: if ($seq->{'randompick'}) {
1442: $max = $seq->{'randompick'};
1443: }
1444: return ($Str,$performance_length,$sum,$max,\@TriesData);
1445: }
1446:
1447: #######################################################
1448: #######################################################
1449:
1450: =pod
1451:
1452: =item &StudentPerformanceOnSequence()
1453:
1454: Inputs:
1455:
1456: =over 4
1457:
1458: =item $student
1459:
1460: =item $studentdata Hash ref to all student data
1461:
1462: =item $seq Hash ref, the sequence we are working on
1463:
1464: =item $links if defined we will output links to each resource.
1465:
1466: =back
1467:
1468: =cut
1469:
1470: #######################################################
1471: #######################################################
1472: sub StudentPerformanceOnSequence {
1473: my ($student,$studentdata,$seq,$links) = @_;
1474: $links = 'no' if (! defined($links));
1475: my $Str = ''; # final result string
1476: my ($score,$max) = (0,0);
1477: my $performance_length = 0;
1478: my $symbol;
1479: my @ScoreData = ();
1480: my $partscore;
1481: foreach my $resource (@{$seq->{'contents'}}) {
1482: next if ($resource->{'type'} ne 'assessment');
1483: my $resource_data = $studentdata->{$resource->{'symb'}};
1484: foreach my $part (@{$resource->{'parts'}}) {
1485: $partscore = undef;
1486: my $weight = &Apache::lonnet::EXT('resource.'.$part.'.weight',
1487: $resource->{'symb'},
1488: $student->{'domain'},
1489: $student->{'username'},
1490: $student->{'section'});
1491: if (!defined($weight) || ($weight eq '')) {
1492: $weight=1;
1493: }
1494: #
1495: $max += $weight; # see the 'excused' branch below...
1496: $performance_length++; # one character per part
1497: $symbol = ' '; # default to space
1498: #
1499: my $awarded = 0;
1500: if (exists($resource_data->{'resource.'.$part.'.awarded'})) {
1501: $awarded = $resource_data->{'resource.'.$part.'.awarded'};
1502: }
1503: #
1504: $partscore = $weight*$awarded;
1505: $score += $partscore;
1506: $symbol = $partscore;
1507: if (length($symbol) > 1) {
1508: $symbol = '*';
1509: }
1510: if (exists($resource_data->{'resource.'.$part.'.solved'})) {
1511: my $status = $resource_data->{'resource.'.$part.'.solved'};
1512: if ($status eq 'excused') {
1513: $symbol = 'x';
1514: $max -= $weight; # Do not count 'excused' problems.
1515: }
1516: } else {
1517: # Unsolved. Did they try?
1518: if (exists($resource_data->{'resource.'.$part.'.tries'})){
1519: $symbol = '.';
1520: } else {
1521: $symbol = ' ';
1522: }
1523: }
1524: #
1525: if (! defined($partscore)) {
1526: $partscore = $symbol;
1527: }
1528: push (@ScoreData,$partscore);
1529: #
1530: if ( ($links eq 'yes' && $symbol ne ' ') || ($links eq 'all')) {
1531: $symbol = '<a href="/adm/grades'.
1532: '?symb='.&Apache::lonnet::escape($resource->{'symb'}).
1533: '&student='.$student->{'username'}.
1534: '&userdom='.$student->{'domain'}.
1535: '&command=submission">'.$symbol.'</a>';
1536: }
1537: $Str .= $symbol;
1538: }
1539: }
1540: return ($Str,$performance_length,$score,$max,\@ScoreData);
1541: }
1542:
1543: #######################################################
1544: #######################################################
1545:
1546: =pod
1547:
1548: =item &CreateLegend()
1549:
1550: This function returns a formatted string containing the legend for the
1551: chart. The legend describes the symbols used to represent grades for
1552: problems.
1553:
1554: =cut
1555:
1556: #######################################################
1557: #######################################################
1558: sub CreateLegend {
1559: my $Str = "<p><pre>".
1560: " 1 correct by student in 1 try\n".
1561: " 7 correct by student in 7 tries\n".
1562: " * correct by student in more than 9 tries\n".
1563: " + correct by hand grading or override\n".
1564: " - incorrect by override\n".
1565: " . incorrect attempted\n".
1566: " # ungraded attempted\n".
1567: " not attempted (blank field)\n".
1568: " x excused".
1569: "</pre><p>";
1570: return $Str;
1571: }
1572:
1573: #######################################################
1574: #######################################################
1575:
1576: =pod
1577:
1578: =back
1579:
1580: =cut
1581:
1582: #######################################################
1583: #######################################################
1584:
1585: 1;
1586:
1587: __END__
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