1: # The LearningOnline Network with CAPA
2: #
3: # $Id: lonstudentassessment.pm,v 1.67 2003/09/10 15:06:34 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: undef($show_links);
144: undef($output_mode);
145: undef($data);
146: undef($base);
147: undef($datadescription);
148: undef($single_student_mode);
149:
150: $single_student_mode = 0;
151: $single_student_mode = 1 if ($ENV{'form.SelectedStudent'});
152: if ($ENV{'form.selectstudent'}) {
153: &Apache::lonstatistics::DisplayClasslist($r);
154: return;
155: }
156: #
157: # Print out the HTML headers for the interface
158: # This also parses the output mode selector
159: # This step must *always* be done.
160: $r->print(&CreateInterface());
161: $r->print('<input type="hidden" name="notfirstrun" value="true" />');
162: $r->print('<input type="hidden" name="sort" value="'.
163: $ENV{'form.sort'}.'" />');
164: $r->rflush();
165: #
166: if (! exists($ENV{'form.notfirstrun'}) && ! $single_student_mode) {
167: return;
168: }
169: #
170: my $initialize = \&html_initialize;
171: my $output_student = \&html_outputstudent;
172: my $finish = \&html_finish;
173: #
174: if ($output_mode eq 'excel') {
175: $initialize = \&excel_initialize;
176: $output_student = \&excel_outputstudent;
177: $finish = \&excel_finish;
178: } elsif ($output_mode eq 'csv') {
179: $initialize = \&csv_initialize;
180: $output_student = \&csv_outputstudent;
181: $finish = \&csv_finish;
182: }
183: #
184: if($c->aborted()) { return ; }
185: #
186: # Determine which students we want to look at
187: my @Students;
188: if ($single_student_mode) {
189: @Students = (&Apache::lonstatistics::current_student());
190: $r->print(&next_and_previous_buttons());
191: $r->rflush();
192: } else {
193: @Students = @Apache::lonstatistics::Students;
194: }
195: #
196: # Perform generic initialization tasks
197: # Since we use lonnet::EXT to retrieve problem weights,
198: # to ensure current data we must clear the caches out.
199: # This makes sure that parameter changes at the student level
200: # are immediately reflected in the chart.
201: &Apache::lonnet::clear_EXT_cache_status();
202: #
203: # Call the initialize routine selected above
204: $initialize->($r);
205: foreach my $student (@Students) {
206: if($c->aborted()) {
207: $finish->($r);
208: return ;
209: }
210: # Call the output_student routine selected above
211: $output_student->($r,$student);
212: }
213: # Call the "finish" routine selected above
214: $finish->($r);
215: #
216: return;
217: }
218:
219: #######################################################
220: #######################################################
221: sub next_and_previous_buttons {
222: my $Str = '';
223: $Str .= '<input type="hidden" name="SelectedStudent" value="'.
224: $ENV{'form.SelectedStudent'}.'" />';
225: #
226: # Build the previous student link
227: my $previous = &Apache::lonstatistics::previous_student();
228: my $previousbutton = '';
229: if (defined($previous)) {
230: my $sname = $previous->{'username'}.':'.$previous->{'domain'};
231: $previousbutton .= '<input type="button" value="'.
232: 'Previous Student ('.
233: $previous->{'username'}.'@'.$previous->{'domain'}.')'.
234: '" onclick="document.Statistics.SelectedStudent.value='.
235: "'".$sname."'".';'.
236: 'document.Statistics.submit();" />';
237: } else {
238: $previousbutton .= '<input type="button" value="'.
239: 'Previous student (none)'.'" />';
240: }
241: #
242: # Build the next student link
243: my $next = &Apache::lonstatistics::next_student();
244: my $nextbutton = '';
245: if (defined($next)) {
246: my $sname = $next->{'username'}.':'.$next->{'domain'};
247: $nextbutton .= '<input type="button" value="'.
248: 'Next Student ('.
249: $next->{'username'}.'@'.$next->{'domain'}.')'.
250: '" onclick="document.Statistics.SelectedStudent.value='.
251: "'".$sname."'".';'.
252: 'document.Statistics.submit();" />';
253: } else {
254: $nextbutton .= '<input type="button" value="'.
255: 'Next student (none)'.'" />';
256: }
257: #
258: # Build the 'all students' button
259: my $all = '';
260: $all .= '<input type="button" value="All Students" '.
261: '" onclick="document.Statistics.SelectedStudent.value='.
262: "''".';'.'document.Statistics.submit();" />';
263: $Str .= $previousbutton.(' 'x5).$all.(' 'x5).$nextbutton;
264: return $Str;
265: }
266:
267: #######################################################
268: #######################################################
269:
270: sub get_student_fields_to_show {
271: my @to_show = @Apache::lonstatistics::SelectedStudentData;
272: foreach (@to_show) {
273: if ($_ eq 'all') {
274: @to_show = @Apache::lonstatistics::StudentDataOrder;
275: last;
276: }
277: }
278: return @to_show;
279: }
280:
281: #######################################################
282: #######################################################
283:
284: =pod
285:
286: =item &CreateInterface()
287:
288: Called by &BuildStudentAssessmentPage to create the top part of the
289: page which displays the chart.
290:
291: Inputs: None
292:
293: Returns: A string containing the HTML for the headers and top table for
294: the chart page.
295:
296: =cut
297:
298: #######################################################
299: #######################################################
300: sub CreateInterface {
301: my $Str = '';
302: # $Str .= &CreateLegend();
303: $Str .= '<table cellspacing="5">'."\n";
304: $Str .= '<tr>';
305: $Str .= '<td align="center"><b>Sections</b></td>';
306: $Str .= '<td align="center"><b>Student Data</b></td>';
307: $Str .= '<td align="center"><b>Enrollment Status</b></td>';
308: $Str .= '<td align="center"><b>Sequences and Folders</b></td>';
309: $Str .= '<td align="center"><b>Output Format</b>'.
310: &Apache::loncommon::help_open_topic("Chart_Output_Formats").
311: '</td>';
312: $Str .= '<td align="center"><b>Output Data</b>'.
313: &Apache::loncommon::help_open_topic("Chart_Output_Data").
314: '</td>';
315: $Str .= '</tr>'."\n";
316: #
317: $Str .= '<tr><td align="center">'."\n";
318: $Str .= &Apache::lonstatistics::SectionSelect('Section','multiple',5);
319: $Str .= '</td><td align="center">';
320: my $only_seq_with_assessments = sub {
321: my $s=shift;
322: if ($s->{'num_assess'} < 1) {
323: return 0;
324: } else {
325: return 1;
326: }
327: };
328: $Str .= &Apache::lonstatistics::StudentDataSelect('StudentData','multiple',
329: 5,undef);
330: $Str .= '</td><td>'."\n";
331: $Str .= &Apache::lonhtmlcommon::StatusOptions(undef,undef,5);
332: $Str .= '</td><td>'."\n";
333: $Str .= &Apache::lonstatistics::MapSelect('Maps','multiple,all',5,
334: $only_seq_with_assessments);
335: $Str .= '</td><td>'."\n";
336: $Str .= &CreateAndParseOutputSelector();
337: $Str .= '</td><td>'."\n";
338: $Str .= &CreateAndParseOutputDataSelector();
339: $Str .= '</td></tr>'."\n";
340: $Str .= '</table>'."\n";
341: $Str .= '<input type="submit" value="Generate Chart" />';
342: $Str .= ' 'x5;
343: $Str .= '<input type="submit" name="selectstudent" '.
344: 'value="Select One Student" />';
345: $Str .= ' 'x5;
346: $Str .= '<input type="submit" name="ClearCache" value="Clear Caches" />';
347: $Str .= ' 'x5;
348: $Str .= '<br />';
349: return $Str;
350: }
351:
352: #######################################################
353: #######################################################
354:
355: =pod
356:
357: =item &CreateAndParseOutputSelector()
358:
359: =cut
360:
361: #######################################################
362: #######################################################
363: my @OutputOptions =
364: ({ name => 'HTML, with links',
365: value => 'html, with links',
366: description => 'Output HTML with each symbol linked to the problem '.
367: 'which generated it.',
368: mode => 'html',
369: show_links => 'yes',
370: },
371: { name => 'HTML, with all links',
372: value => 'html, with all links',
373: description => 'Output HTML with each symbol linked to the problem '.
374: 'which generated it. '.
375: 'This includes links for unattempted problems.',
376: mode => 'html',
377: show_links => 'all',
378: },
379: { name => 'HTML, without links',
380: value => 'html, without links',
381: description => 'Output HTML. By not including links, the size of the'.
382: ' web page is greatly reduced. If your browser crashes on the '.
383: 'full display, try this.',
384: mode => 'html',
385: show_links => 'no',
386: },
387: { name => 'Excel',
388: value => 'excel',
389: description => 'Output an Excel file (compatable with Excel 95).',
390: mode => 'excel',
391: show_links => 'no',
392: },
393: { name => 'CSV',
394: value => 'csv',
395: description => 'Output a comma seperated values file suitable for '.
396: 'import into a spreadsheet program. Using this method as opposed '.
397: 'to Excel output allows you to organize your data before importing'.
398: ' it into a spreadsheet program.',
399: mode => 'csv',
400: show_links => 'no',
401: },
402: );
403:
404: sub OutputDescriptions {
405: my $Str = '';
406: $Str .= "<h2>Output Formats</h2>\n";
407: $Str .= "<dl>\n";
408: foreach my $outputmode (@OutputOptions) {
409: $Str .=" <dt>".$outputmode->{'name'}."</dt>\n";
410: $Str .=" <dd>".$outputmode->{'description'}."</dd>\n";
411: }
412: $Str .= "</dl>\n";
413: return $Str;
414: }
415:
416: sub CreateAndParseOutputSelector {
417: my $Str = '';
418: my $elementname = 'chartoutputmode';
419: #
420: # Format for output options is 'mode, restrictions';
421: my $selected = 'html, without links';
422: if (exists($ENV{'form.'.$elementname})) {
423: if (ref($ENV{'form.'.$elementname} eq 'ARRAY')) {
424: $selected = $ENV{'form.'.$elementname}->[0];
425: } else {
426: $selected = $ENV{'form.'.$elementname};
427: }
428: }
429: #
430: # Set package variables describing output mode
431: $show_links = 'no';
432: $output_mode = 'html';
433: foreach my $option (@OutputOptions) {
434: next if ($option->{'value'} ne $selected);
435: $output_mode = $option->{'mode'};
436: $show_links = $option->{'show_links'};
437: }
438:
439: #
440: # Build the form element
441: $Str = qq/<select size="5" name="$elementname">/;
442: foreach my $option (@OutputOptions) {
443: $Str .= "\n".' <option value="'.$option->{'value'}.'"';
444: $Str .= " selected " if ($option->{'value'} eq $selected);
445: $Str .= ">".$option->{'name'}."<\/option>";
446: }
447: $Str .= "\n</select>";
448: return $Str;
449: }
450:
451: ##
452: ## Data selector stuff
453: ##
454: my @OutputDataOptions =
455: (
456: { name => 'Scores',
457: base => 'scores',
458: value => 'scores',
459: shortdesc => 'Score on each Problem Part',
460: longdesc =>'The students score on each problem part, computed as'.
461: 'the part weight * part awarded',
462: },
463: { name => 'Scores Sum',
464: base => 'scores',
465: value => 'sum only',
466: shortdesc => 'Sum of Scores on each Problem Part',
467: longdesc =>'The total of the scores of the student on each problem'.
468: ' part in the sequences or folders selected.',
469: },
470: { name => 'Scores Sum & Maximums',
471: base => 'scores',
472: value => 'sum and total',
473: shortdesc => 'Total Score and Maximum Possible for each '.
474: 'Sequence or Folder',
475: longdesc => 'The score of each student as well as the '.
476: ' maximum possible on each Sequence or Folder.',
477: },
478: { name => 'Scores Summary Table Only',
479: base => 'scores',
480: value => 'final table scores',
481: shortdesc => 'Summary of Scores',
482: longdesc => 'The average score on each sequence or folder for the '.
483: 'selected students.',
484: },
485: { name =>'Tries',
486: base =>'tries',
487: value => 'tries',
488: shortdesc => 'Number of Tries before success on each Problem Part',
489: longdesc =>'The number of tries before success on each problem part.',
490: },
491: { name =>'Parts Correct',
492: base =>'tries',
493: value => 'parts correct',
494: shortdesc => 'Number of Problem Parts completed successfully.',
495: longdesc => 'The Number of Problem Parts completed successfully'.
496: ' on each sequence or folder.',
497: },
498: { name =>'Parts Correct & Maximums',
499: base =>'tries',
500: value => 'parts correct total',
501: shortdesc => 'Number of Problem Parts completed successfully.',
502: longdesc => 'The Number of Problem Parts completed successfully and '.
503: 'the maximum possible for each student',
504: },
505: { name => 'Parts Summary Table Only',
506: base => 'tries',
507: value => 'final table parts',
508: shortdesc => 'Summary of Parts Correct',
509: longdesc => 'A summary table of the average number of problem parts '.
510: 'students were able to get correct on each sequence.',
511: },
512: );
513:
514: sub HTMLifyOutputDataDescriptions {
515: my $Str = '';
516: $Str .= "<h2>Output Data</h2>\n";
517: $Str .= "<dl>\n";
518: foreach my $option (@OutputDataOptions) {
519: $Str .= ' <dt>'.$option->{'name'}.'</dt>';
520: $Str .= '<dd>'.$option->{'longdesc'}.'</dd>'."\n";
521: }
522: $Str .= "</dl>\n";
523: return $Str;
524: }
525:
526: sub CreateAndParseOutputDataSelector {
527: my $Str = '';
528: my $elementname = 'chartoutputdata';
529: #
530: my $selected = 'scores';
531: if (exists($ENV{'form.'.$elementname})) {
532: if (ref($ENV{'form.'.$elementname} eq 'ARRAY')) {
533: $selected = $ENV{'form.'.$elementname}->[0];
534: } else {
535: $selected = $ENV{'form.'.$elementname};
536: }
537: }
538: #
539: $data = 'scores';
540: foreach my $option (@OutputDataOptions) {
541: if ($option->{'value'} eq $selected) {
542: $data = $option->{'value'};
543: $base = $option->{'base'};
544: $datadescription = $option->{'shortdesc'};
545: }
546: }
547: #
548: # Build the form element
549: $Str = qq/<select size="5" name="$elementname">/;
550: foreach my $option (@OutputDataOptions) {
551: $Str .= "\n".' <option value="'.$option->{'value'}.'"';
552: $Str .= " selected " if ($option->{'value'} eq $data);
553: $Str .= ">".$option->{'name'}."<\/option>";
554: }
555: $Str .= "\n</select>";
556: return $Str;
557:
558: }
559:
560: #######################################################
561: #######################################################
562:
563: =pod
564:
565: =head2 HTML output routines
566:
567: =item &html_initialize($r)
568:
569: Create labels for the columns of student data to show.
570:
571: =item &html_outputstudent($r,$student)
572:
573: Return a line of the chart for a student.
574:
575: =item &html_finish($r)
576:
577: =cut
578:
579: #######################################################
580: #######################################################
581: {
582: my $padding;
583: my $count;
584:
585: my $nodata_count; # The number of students for which there is no data
586: my %prog_state; # progress state used by loncommon PrgWin routines
587:
588: sub html_initialize {
589: my ($r) = @_;
590: #
591: $padding = ' 'x3;
592: $count = 0;
593: $nodata_count = 0;
594: undef(%prog_state);
595: #
596: $r->print("<h3>".$ENV{'course.'.$ENV{'request.course.id'}.'.description'}.
597: " ".localtime(time)."</h3>");
598:
599: if ($data !~ /^final table/) {
600: $r->print("<h3>".$datadescription."</h3>");
601: }
602: #
603: # Set up progress window for 'final table' display only
604: if ($data =~ /^final table/) {
605: my $studentcount = scalar(@Apache::lonstatistics::Students);
606: %prog_state=&Apache::lonhtmlcommon::Create_PrgWin
607: ($r,'Summary Table Status',
608: 'Summary Table Compilation Progress', $studentcount);
609: }
610: my $Str = "<pre>\n";
611: # First, the @StudentData fields need to be listed
612: my @to_show = &get_student_fields_to_show();
613: foreach my $field (@to_show) {
614: my $title=$Apache::lonstatistics::StudentData{$field}->{'title'};
615: my $base =$Apache::lonstatistics::StudentData{$field}->{'base_width'};
616: my $width=$Apache::lonstatistics::StudentData{$field}->{'width'};
617: $Str .= $title.' 'x($width-$base).$padding;
618: }
619: # Now the selected sequences need to be listed
620: foreach my $sequence (&Apache::lonstatistics::Sequences_with_Assess()){
621: my $title = $sequence->{'title'};
622: my $base = $sequence->{'base_width'};
623: my $width = $sequence->{'width'};
624: $Str .= $title.' 'x($width-$base).$padding;
625: }
626: $Str .= "total</pre>\n";
627: $Str .= "<pre>";
628: #
629: # Check for suppression of output
630: if ($data =~ /^final table/) {
631: $Str = '';
632: }
633: $r->print($Str);
634: $r->rflush();
635: return;
636: }
637:
638: sub html_outputstudent {
639: my ($r,$student) = @_;
640: my $Str = '';
641: #
642: if($count++ % 5 == 0 && $count > 0 && $data !~ /^final table/) {
643: $r->print("</pre><pre>");
644: }
645: # First, the @StudentData fields need to be listed
646: my @to_show = &get_student_fields_to_show();
647: foreach my $field (@to_show) {
648: my $title=$student->{$field};
649: my $base = length($title);
650: my $width=$Apache::lonstatistics::StudentData{$field}->{'width'};
651: $Str .= $title.' 'x($width-$base).$padding;
652: }
653: # Get ALL the students data
654: my %StudentsData;
655: my @tmp = &Apache::loncoursedata::get_current_state
656: ($student->{'username'},$student->{'domain'},undef,
657: $ENV{'request.course.id'});
658: if ((scalar @tmp > 0) && ($tmp[0] !~ /^error:/)) {
659: %StudentsData = @tmp;
660: }
661: if (scalar(@tmp) < 1) {
662: $nodata_count++;
663: return if ($data =~ /^final table/);
664: $Str .= '<font color="blue">No Course Data</font>'."\n";
665: $r->print($Str);
666: $r->rflush();
667: return;
668: }
669: #
670: # By sequence build up the data
671: my $studentstats;
672: my $PerformanceStr = '';
673: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
674: my ($performance,$performance_length,$score,$seq_max,$rawdata);
675: if ($base eq 'tries') {
676: ($performance,$performance_length,$score,$seq_max,$rawdata) =
677: &StudentTriesOnSequence($student,\%StudentsData,
678: $seq,$show_links);
679: } else {
680: ($performance,$performance_length,$score,$seq_max,$rawdata) =
681: &StudentPerformanceOnSequence($student,\%StudentsData,
682: $seq,$show_links);
683: }
684: my $ratio = sprintf("%3d",$score).'/'.sprintf("%3d",$seq_max);
685: #
686: if ($data eq 'sum and total' || $data eq 'parts correct total') {
687: $performance = $ratio;
688: $performance .= ' 'x($seq->{'width'}-length($ratio));
689: } elsif ($data eq 'sum only' || $data eq 'parts correct') {
690: $performance = $score;
691: $performance .= ' 'x($seq->{'width'}-length($score));
692: } else {
693: # Pad with extra spaces
694: $performance .= ' 'x($seq->{'width'}-$performance_length-
695: length($ratio)
696: ).$ratio;
697: }
698: #
699: $Str .= $performance.$padding;
700: #
701: $studentstats->{$seq->{'symb'}}->{'score'}= $score;
702: $studentstats->{$seq->{'symb'}}->{'max'} = $seq_max;
703: }
704: #
705: # Total it up and store the statistics info.
706: my ($score,$max) = (0,0);
707: while (my ($symb,$seq_stats) = each (%{$studentstats})) {
708: $Statistics->{$symb}->{'score'} += $seq_stats->{'score'};
709: if ($Statistics->{$symb}->{'max'} < $seq_stats->{'max'}) {
710: $Statistics->{$symb}->{'max'} = $seq_stats->{'max'};
711: }
712: $score += $seq_stats->{'score'};
713: $max += $seq_stats->{'max'};
714: }
715: $Str .= ' '.' 'x(length($max)-length($score)).$score.'/'.$max;
716: $Str .= " \n";
717: #
718: # Check for suppressed output and update the progress window if so...
719: if ($data =~ /^final table/) {
720: $Str = '';
721: &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
722: 'last student');
723: }
724: #
725: $r->print($Str);
726: #
727: $r->rflush();
728: return;
729: }
730:
731: sub html_finish {
732: my ($r) = @_;
733: #
734: # Check for suppressed output and close the progress window if so
735: if ($data =~ /^final table/) {
736: &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
737: } else {
738: $r->print("</pre>\n");
739: }
740: if ($single_student_mode) {
741: $r->print(&SingleStudentTotal());
742: } else {
743: $r->print(&StudentAverageTotal());
744: }
745: $r->rflush();
746: return;
747: }
748:
749: sub StudentAverageTotal {
750: my $Str = "<h3>Summary Tables</h3>\n";
751: my $num_students = scalar(@Apache::lonstatistics::Students);
752: my $total_ave = 0;
753: my $total_max = 0;
754: $Str .= '<table border=2 cellspacing="1">'."\n";
755: $Str .= "<tr><th>Title</th><th>Average</th><th>Maximum</th></tr>\n";
756: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
757: my $ave;
758: if ($num_students > $nodata_count) {
759: $ave = int(100*($Statistics->{$seq->{'symb'}}->{'score'}/
760: ($num_students-$nodata_count)))/100;
761: } else {
762: $ave = 0;
763: }
764: $total_ave += $ave;
765: my $max = $Statistics->{$seq->{'symb'}}->{'max'};
766: $total_max += $max;
767: if ($ave == 0) {
768: $ave = "0.00";
769: }
770: $ave .= ' ';
771: $max .= ' ';
772: $Str .= '<tr><td>'.$seq->{'title'}.'</td>'.
773: '<td align="right">'.$ave.'</td>'.
774: '<td align="right">'.$max.'</td></tr>'."\n";
775: }
776: $total_ave = int(100*$total_ave)/100; # only two digit
777: $Str .= "</table>\n";
778: $Str .= '<table border=2 cellspacing="1">'."\n";
779: $Str .= '<tr><th>Number of Students</th><th>Average</th>'.
780: "<th>Maximum</th></tr>\n";
781: $Str .= '<tr><td>'.($num_students-$nodata_count).'</td>'.
782: '<td>'.$total_ave.'</td><td>'.$total_max.'</td>';
783: $Str .= "</table>\n";
784: return $Str;
785: }
786:
787: sub SingleStudentTotal {
788: my $student = &Apache::lonstatistics::current_student();
789: my $Str = "<h3>Summary table for ".$student->{'fullname'}." ".
790: $student->{'username'}.'@'.$student->{'domain'}."</h3>\n";
791: $Str .= '<table border=2 cellspacing="1">'."\n";
792: $Str .=
793: "<tr><th>Sequence or Folder</th><th>Score</th><th>Maximum</th></tr>\n";
794: my $total = 0;
795: my $total_max = 0;
796: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
797: my $value = $Statistics->{$seq->{'symb'}}->{'score'};
798: my $max = $Statistics->{$seq->{'symb'}}->{'max'};
799: $Str .= '<tr><td>'.$seq->{'title'}.'</td>'.
800: '<td align="right">'.$value.'</td>'.
801: '<td align="right">'.$max.'</td></tr>'."\n";
802: $total += $value;
803: $total_max +=$max;
804: }
805: $Str .= '<tr><td><b>Total</b></td>'.
806: '<td align="right">'.$total.'</td>'.
807: '<td align="right">'.$total_max."</td></tr>\n";
808: $Str .= "</table>\n";
809: return $Str;
810: }
811:
812: }
813:
814: #######################################################
815: #######################################################
816:
817: =pod
818:
819: =head2 EXCEL subroutines
820:
821: =item &excel_initialize($r)
822:
823: =item &excel_outputstudent($r,$student)
824:
825: =item &excel_finish($r)
826:
827: =cut
828:
829: #######################################################
830: #######################################################
831: {
832:
833: my $excel_sheet;
834: my $excel_workbook;
835:
836: my $filename;
837: my $rows_output;
838: my $cols_output;
839:
840: my %prog_state; # progress window state
841: my $request_aborted;
842:
843: sub excel_initialize {
844: my ($r) = @_;
845: #
846: undef ($excel_sheet);
847: undef ($excel_workbook);
848: undef ($filename);
849: undef ($rows_output);
850: undef ($cols_output);
851: undef (%prog_state);
852: undef ($request_aborted);
853: #
854: my $total_columns = scalar(&get_student_fields_to_show());
855: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
856: # Add 2 because we need a 'sum' and 'total' column for each
857: $total_columns += $seq->{'num_assess_parts'}+2;
858: }
859: if ($data eq 'tries' && $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>Parts Correct</b> or <b>Parts Correct & Totals</b>).
872: </p>
873: END
874: $request_aborted = 1;
875: }
876: if ($data eq 'scores' && $total_columns > 255) {
877: $r->print(<<END);
878: <h2>Unable to Complete Request</h2>
879: <p>
880: LON-CAPA is unable to produce your Excel spreadsheet because your selections
881: will result in more than 255 columns. Excel allows only 255 columns in a
882: spreadsheet.
883: </p><p>
884: You may consider reducing the number of <b>Sequences or Folders</b> you
885: have selected.
886: </p><p>
887: LON-CAPA can produce <b>CSV</b> files of this data or Excel files of the
888: summary data (<b>Scores Sum</b> or <b>Scores Sum & Totals</b>).
889: </p>
890: END
891: $request_aborted = 1;
892: }
893: if ($data =~ /^final table/) {
894: $r->print(<<END);
895: <h2>Unable to Complete Request</h2>
896: <p>
897: The <b>Summary Table (Scores)</b> option is not available for non-HTML output.
898: </p>
899: END
900: $request_aborted = 1;
901: }
902: return if ($request_aborted);
903: #
904: $filename = '/prtspool/'.
905: $ENV{'user.name'}.'_'.$ENV{'user.domain'}.'_'.
906: time.'_'.rand(1000000000).'.xls';
907: #
908: $excel_workbook = undef;
909: $excel_sheet = undef;
910: #
911: $rows_output = 0;
912: $cols_output = 0;
913: #
914: # Create sheet
915: $excel_workbook = Spreadsheet::WriteExcel->new('/home/httpd'.$filename);
916: #
917: # Check for errors
918: if (! defined($excel_workbook)) {
919: $r->log_error("Error creating excel spreadsheet $filename: $!");
920: $r->print("Problems creating new Excel file. ".
921: "This error has been logged. ".
922: "Please alert your LON-CAPA administrator");
923: return ;
924: }
925: #
926: # The excel spreadsheet stores temporary data in files, then put them
927: # together. If needed we should be able to disable this (memory only).
928: # The temporary directory must be specified before calling 'addworksheet'.
929: # File::Temp is used to determine the temporary directory.
930: $excel_workbook->set_tempdir($Apache::lonnet::tmpdir);
931: #
932: # Add a worksheet
933: my $sheetname = $ENV{'course.'.$ENV{'request.course.id'}.'.description'};
934: $sheetname = &Apache::loncommon::clean_excel_name($sheetname);
935: $excel_sheet = $excel_workbook->addworksheet($sheetname);
936: #
937: # Put the course description in the header
938: $excel_sheet->write($rows_output,$cols_output++,
939: $ENV{'course.'.$ENV{'request.course.id'}.'.description'});
940: $cols_output += 3;
941: #
942: # Put a description of the sections listed
943: my $sectionstring = '';
944: my @Sections = @Apache::lonstatistics::SelectedSections;
945: if (scalar(@Sections) > 1) {
946: if (scalar(@Sections) > 2) {
947: my $last = pop(@Sections);
948: $sectionstring = "Sections ".join(', ',@Sections).', and '.$last;
949: } else {
950: $sectionstring = "Sections ".join(' and ',@Sections);
951: }
952: } else {
953: if ($Sections[0] eq 'all') {
954: $sectionstring = "All sections";
955: } else {
956: $sectionstring = "Section ".$Sections[0];
957: }
958: }
959: $excel_sheet->write($rows_output,$cols_output++,$sectionstring);
960: $cols_output += scalar(@Sections);
961: #
962: # Put the date in there too
963: $excel_sheet->write($rows_output++,$cols_output++,
964: 'Compiled on '.localtime(time));
965: #
966: $cols_output = 0;
967: $excel_sheet->write($rows_output++,$cols_output++,$datadescription);
968: #
969: if ($data eq 'tries' || $data eq 'scores') {
970: $rows_output++;
971: }
972: #
973: # Add the student headers
974: $cols_output = 0;
975: foreach my $field (&get_student_fields_to_show()) {
976: $excel_sheet->write($rows_output,$cols_output++,$field);
977: }
978: my $row_offset = 0;
979: if ($data eq 'tries' || $data eq 'scores') {
980: $row_offset = -1;
981: }
982: #
983: # Add the remaining column headers
984: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
985: $excel_sheet->write($rows_output+$row_offset,
986: $cols_output,$seq->{'title'});
987: if ($data eq 'tries' || $data eq 'scores') {
988: foreach my $res (@{$seq->{'contents'}}) {
989: next if ($res->{'type'} ne 'assessment');
990: if (scalar(@{$res->{'parts'}}) > 1) {
991: foreach my $part (@{$res->{'parts'}}) {
992: $excel_sheet->write($rows_output,
993: $cols_output++,
994: $res->{'title'}.' part '.$part);
995: }
996: } else {
997: $excel_sheet->write($rows_output,
998: $cols_output++,
999: $res->{'title'});
1000: }
1001: }
1002: $excel_sheet->write($rows_output,$cols_output++,'score');
1003: $excel_sheet->write($rows_output,$cols_output++,'maximum');
1004: } elsif ($data eq 'sum and total' || $data eq 'parts correct total') {
1005: $excel_sheet->write($rows_output+1,$cols_output,'score');
1006: $excel_sheet->write($rows_output+1,$cols_output+1,'maximum');
1007: $cols_output += 2;
1008: } else {
1009: $cols_output++;
1010: }
1011: }
1012: #
1013: # Bookkeeping
1014: if ($data eq 'sum and total' || $data eq 'parts correct total') {
1015: $rows_output += 2;
1016: } else {
1017: $rows_output += 1;
1018: }
1019: #
1020: # Output a row for MAX
1021: $cols_output = 0;
1022: foreach my $field (&get_student_fields_to_show()) {
1023: if ($field eq 'username' || $field eq 'fullname' ||
1024: $field eq 'id') {
1025: $excel_sheet->write($rows_output,$cols_output++,'Maximum');
1026: } else {
1027: $excel_sheet->write($rows_output,$cols_output++,'');
1028: }
1029: }
1030: #
1031: # Add the maximums for each sequence or assessment
1032: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
1033: my $weight;
1034: my $max = 0;
1035: foreach my $resource (@{$seq->{'contents'}}) {
1036: next if ($resource->{'type'} ne 'assessment');
1037: foreach my $part (@{$resource->{'parts'}}) {
1038: $weight = 1;
1039: if ($base eq 'scores') {
1040: $weight = &Apache::lonnet::EXT
1041: ('resource.'.$part.'.weight',$resource->{'symb'},
1042: undef,undef,undef);
1043: if (!defined($weight) || ($weight eq '')) {
1044: $weight=1;
1045: }
1046: }
1047: if ($data eq 'scores') {
1048: $excel_sheet->write($rows_output,$cols_output++,$weight);
1049: } elsif ($data eq 'tries') {
1050: $excel_sheet->write($rows_output,$cols_output++,'');
1051: }
1052: $max += $weight;
1053: }
1054: }
1055: if (! ($data eq 'sum only' || $data eq 'parts correct')) {
1056: $excel_sheet->write($rows_output,$cols_output++,'');
1057: }
1058: $excel_sheet->write($rows_output,$cols_output++,$max);
1059: }
1060: $rows_output++;
1061: #
1062: # Let the user know what we are doing
1063: my $studentcount = scalar(@Apache::lonstatistics::Students);
1064: $r->print("<h1>Compiling Excel spreadsheet for ".
1065: $studentcount.' student');
1066: $r->print('s') if ($studentcount > 1);
1067: $r->print("</h1>\n");
1068: $r->rflush();
1069: #
1070: # Initialize progress window
1071: %prog_state=&Apache::lonhtmlcommon::Create_PrgWin
1072: ($r,'Excel File Compilation Status',
1073: 'Excel File Compilation Progress', $studentcount);
1074: #
1075: &Apache::lonhtmlcommon::Update_PrgWin($r,\%prog_state,
1076: 'Processing first student');
1077: return;
1078: }
1079:
1080: sub excel_outputstudent {
1081: my ($r,$student) = @_;
1082: return if ($request_aborted);
1083: return if (! defined($excel_sheet));
1084: $cols_output=0;
1085: #
1086: # Write out student data
1087: my @to_show = &get_student_fields_to_show();
1088: foreach my $field (@to_show) {
1089: $excel_sheet->write($rows_output,$cols_output++,$student->{$field});
1090: }
1091: #
1092: # Get student assessment data
1093: my %StudentsData;
1094: my @tmp = &Apache::loncoursedata::get_current_state($student->{'username'},
1095: $student->{'domain'},
1096: undef,
1097: $ENV{'request.course.id'});
1098: if ((scalar @tmp > 0) && ($tmp[0] !~ /^error:/)) {
1099: %StudentsData = @tmp;
1100: }
1101: #
1102: # Write out sequence scores and totals data
1103: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
1104: my ($performance,$performance_length,$score,$seq_max,$rawdata);
1105: if ($base eq 'tries') {
1106: ($performance,$performance_length,$score,$seq_max,$rawdata) =
1107: &StudentTriesOnSequence($student,\%StudentsData,
1108: $seq,'no');
1109: } else {
1110: ($performance,$performance_length,$score,$seq_max,$rawdata) =
1111: &StudentPerformanceOnSequence($student,\%StudentsData,
1112: $seq,'no');
1113: }
1114: if ($data eq 'tries' || $data eq 'scores') {
1115: foreach my $value (@$rawdata) {
1116: $excel_sheet->write($rows_output,$cols_output++,$value);
1117: }
1118: $excel_sheet->write($rows_output,$cols_output++,$score);
1119: $excel_sheet->write($rows_output,$cols_output++,$seq_max);
1120: } elsif ($data eq 'sum and total' || $data eq 'sum only' ||
1121: $data eq 'parts correct' || $data eq 'parts correct total') {
1122: $excel_sheet->write($rows_output,$cols_output++,$score);
1123: }
1124: if ($data eq 'sum and total' || $data eq 'parts correct total') {
1125: $excel_sheet->write($rows_output,$cols_output++,$seq_max);
1126: }
1127: }
1128: #
1129: # Bookkeeping
1130: $rows_output++;
1131: $cols_output=0;
1132: #
1133: # Update the progress window
1134: &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,'last student');
1135: return;
1136: }
1137:
1138: sub excel_finish {
1139: my ($r) = @_;
1140: return if ($request_aborted);
1141: return if (! defined($excel_sheet));
1142: #
1143: # Write the excel file
1144: $excel_workbook->close();
1145: my $c = $r->connection();
1146: #
1147: return if($c->aborted());
1148: #
1149: # Close the progress window
1150: &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
1151: #
1152: # Tell the user where to get their excel file
1153: $r->print('<br />'.
1154: '<a href="'.$filename.'">Your Excel spreadsheet.</a>'."\n");
1155: $r->rflush();
1156: return;
1157: }
1158:
1159: }
1160: #######################################################
1161: #######################################################
1162:
1163: =pod
1164:
1165: =head2 CSV output routines
1166:
1167: =item &csv_initialize($r)
1168:
1169: =item &csv_outputstudent($r,$student)
1170:
1171: =item &csv_finish($r)
1172:
1173: =cut
1174:
1175: #######################################################
1176: #######################################################
1177: {
1178:
1179: my $outputfile;
1180: my $filename;
1181: my $request_aborted;
1182: my %prog_state; # progress window state
1183:
1184: sub csv_initialize{
1185: my ($r) = @_;
1186: #
1187: # Clean up
1188: undef($outputfile);
1189: undef($filename);
1190: undef($request_aborted);
1191: undef(%prog_state);
1192: #
1193: # Deal with unimplemented requests
1194: $request_aborted = undef;
1195: if ($data =~ /final table/) {
1196: $r->print(<<END);
1197: <h2>Unable to Complete Request</h2>
1198: <p>
1199: The <b>Summary Table (Scores)</b> option is not available for non-HTML output.
1200: </p>
1201: END
1202: $request_aborted = 1;
1203: }
1204: return if ($request_aborted);
1205:
1206: #
1207: # Open a file
1208: $filename = '/prtspool/'.
1209: $ENV{'user.name'}.'_'.$ENV{'user.domain'}.'_'.
1210: time.'_'.rand(1000000000).'.csv';
1211: unless ($outputfile = Apache::File->new('>/home/httpd'.$filename)) {
1212: $r->log_error("Couldn't open $filename for output $!");
1213: $r->print("Problems occured in writing the csv file. ".
1214: "This error has been logged. ".
1215: "Please alert your LON-CAPA administrator.");
1216: $outputfile = undef;
1217: }
1218: #
1219: # Datestamp
1220: my $description = $ENV{'course.'.$ENV{'request.course.id'}.'.description'};
1221: print $outputfile '"'.&Apache::loncommon::csv_translate($description).'",'.
1222: '"'.&Apache::loncommon::csv_translate(scalar(localtime(time))).'"'.
1223: "\n";
1224: #
1225: # Print out the headings
1226: my $Str = '';
1227: my $Str2 = undef;
1228: foreach my $field (&get_student_fields_to_show()) {
1229: if ($data eq 'sum only') {
1230: $Str .= '"'.&Apache::loncommon::csv_translate($field).'",';
1231: } elsif ($data eq 'sum and total' || $data eq 'parts correct total') {
1232: $Str .= '"",'; # first row empty on the student fields
1233: $Str2 .= '"'.&Apache::loncommon::csv_translate($field).'",';
1234: } elsif ($data eq 'scores' || $data eq 'tries' ||
1235: $data eq 'parts correct') {
1236: $Str .= '"",';
1237: $Str2 .= '"'.&Apache::loncommon::csv_translate($field).'",';
1238: }
1239: }
1240: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
1241: if ($data eq 'sum only' || $data eq 'parts correct') {
1242: $Str .= '"'.&Apache::loncommon::csv_translate($seq->{'title'}).
1243: '",';
1244: } elsif ($data eq 'sum and total' || $data eq 'parts correct total') {
1245: $Str .= '"'.&Apache::loncommon::csv_translate($seq->{'title'}).
1246: '","",';
1247: $Str2 .= '"score","total possible",';
1248: } elsif ($data eq 'scores' || $data eq 'tries') {
1249: $Str .= '"'.&Apache::loncommon::csv_translate($seq->{'title'}).
1250: '",';
1251: $Str .= '"",'x($seq->{'num_assess_parts'}-1+2);
1252: foreach my $res (@{$seq->{'contents'}}) {
1253: next if ($res->{'type'} ne 'assessment');
1254: foreach my $part (@{$res->{'parts'}}) {
1255: $Str2 .= '"'.&Apache::loncommon::csv_translate($res->{'title'}.', Part '.$part).'",';
1256: }
1257: }
1258: $Str2 .= '"score","total possible",';
1259: }
1260: }
1261: chop($Str);
1262: $Str .= "\n";
1263: print $outputfile $Str;
1264: if (defined($Str2)) {
1265: chop($Str2);
1266: $Str2 .= "\n";
1267: print $outputfile $Str2;
1268: }
1269: #
1270: # Initialize progress window
1271: my $studentcount = scalar(@Apache::lonstatistics::Students);
1272: %prog_state=&Apache::lonhtmlcommon::Create_PrgWin
1273: ($r,'CSV File Compilation Status',
1274: 'CSV File Compilation Progress', $studentcount);
1275: return;
1276: }
1277:
1278: sub csv_outputstudent {
1279: my ($r,$student) = @_;
1280: return if ($request_aborted);
1281: return if (! defined($outputfile));
1282: my $Str = '';
1283: #
1284: # Output student fields
1285: my @to_show = &get_student_fields_to_show();
1286: foreach my $field (@to_show) {
1287: $Str .= '"'.&Apache::loncommon::csv_translate($student->{$field}).'",';
1288: }
1289: #
1290: # Get student assessment data
1291: my %StudentsData;
1292: my @tmp = &Apache::loncoursedata::get_current_state($student->{'username'},
1293: $student->{'domain'},
1294: undef,
1295: $ENV{'request.course.id'});
1296: if ((scalar @tmp > 0) && ($tmp[0] !~ /^error:/)) {
1297: %StudentsData = @tmp;
1298: }
1299: #
1300: # Output performance data
1301: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
1302: my ($performance,$performance_length,$score,$seq_max,$rawdata);
1303: if ($base eq 'tries') {
1304: ($performance,$performance_length,$score,$seq_max,$rawdata) =
1305: &StudentTriesOnSequence($student,\%StudentsData,
1306: $seq,'no');
1307: } else {
1308: ($performance,$performance_length,$score,$seq_max,$rawdata) =
1309: &StudentPerformanceOnSequence($student,\%StudentsData,
1310: $seq,'no');
1311: }
1312: if ($data eq 'sum only' || $data eq 'parts correct') {
1313: $Str .= '"'.$score.'",';
1314: } elsif ($data eq 'sum and total' || $data eq 'parts correct total') {
1315: $Str .= '"'.$score.'","'.$seq_max.'",';
1316: } elsif ($data eq 'scores' || $data eq 'tries') {
1317: $Str .= '"'.join('","',(@$rawdata,$score,$seq_max)).'",';
1318: }
1319: }
1320: chop($Str);
1321: $Str .= "\n";
1322: print $outputfile $Str;
1323: #
1324: # Update the progress window
1325: &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,'last student');
1326: return;
1327: }
1328:
1329: sub csv_finish {
1330: my ($r) = @_;
1331: return if ($request_aborted);
1332: return if (! defined($outputfile));
1333: close($outputfile);
1334: #
1335: my $c = $r->connection();
1336: return if ($c->aborted());
1337: #
1338: # Close the progress window
1339: &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
1340: #
1341: # Tell the user where to get their csv file
1342: $r->print('<br />'.
1343: '<a href="'.$filename.'">Your csv file.</a>'."\n");
1344: $r->rflush();
1345: return;
1346:
1347: }
1348:
1349: }
1350:
1351: #######################################################
1352: #######################################################
1353:
1354: =pod
1355:
1356: =item &StudentTriesOnSequence()
1357:
1358: Inputs:
1359:
1360: =over 4
1361:
1362: =item $student
1363:
1364: =item $studentdata Hash ref to all student data
1365:
1366: =item $seq Hash ref, the sequence we are working on
1367:
1368: =item $links if defined we will output links to each resource.
1369:
1370: =back
1371:
1372: =cut
1373:
1374: #######################################################
1375: #######################################################
1376: sub StudentTriesOnSequence {
1377: my ($student,$studentdata,$seq,$links) = @_;
1378: $links = 'no' if (! defined($links));
1379: my $Str = '';
1380: my ($sum,$max) = (0,0);
1381: my $performance_length = 0;
1382: my @TriesData = ();
1383: my $tries;
1384: foreach my $resource (@{$seq->{'contents'}}) {
1385: next if ($resource->{'type'} ne 'assessment');
1386: my $resource_data = $studentdata->{$resource->{'symb'}};
1387: my $value = '';
1388: foreach my $partnum (@{$resource->{'parts'}}) {
1389: $tries = undef;
1390: $max++;
1391: $performance_length++;
1392: my $symbol = ' '; # default to space
1393: #
1394: if (exists($resource_data->{'resource.'.$partnum.'.solved'})) {
1395: my $status = $resource_data->{'resource.'.$partnum.'.solved'};
1396: if ($status eq 'correct_by_override') {
1397: $symbol = '+';
1398: $sum++;
1399: } elsif ($status eq 'incorrect_by_override') {
1400: $symbol = '-';
1401: } elsif ($status eq 'ungraded_attempted') {
1402: $symbol = '#';
1403: } elsif ($status eq 'incorrect_attempted') {
1404: $symbol = '.';
1405: } elsif ($status eq 'excused') {
1406: $symbol = 'x';
1407: $max--;
1408: } elsif ($status eq 'correct_by_student' &&
1409: exists($resource_data->{'resource.'.$partnum.'.tries'})){
1410: $tries = $resource_data->{'resource.'.$partnum.'.tries'};
1411: if ($tries > 9) {
1412: $symbol = '*';
1413: } elsif ($tries > 0) {
1414: $symbol = $tries;
1415: } else {
1416: $symbol = ' ';
1417: }
1418: $sum++;
1419: } elsif (exists($resource_data->{'resource.'.
1420: $partnum.'.tries'})){
1421: $symbol = '.';
1422: } else {
1423: $symbol = ' ';
1424: }
1425: } else {
1426: # Unsolved. Did they try?
1427: if (exists($resource_data->{'resource.'.$partnum.'.tries'})){
1428: $symbol = '.';
1429: } else {
1430: $symbol = ' ';
1431: }
1432: }
1433: #
1434: if (! defined($tries)) {
1435: $tries = $symbol;
1436: }
1437: push (@TriesData,$tries);
1438: #
1439: if ( ($links eq 'yes' && $symbol ne ' ') ||
1440: ($links eq 'all')) {
1441: if (length($symbol) > 1) {
1442: &Apache::lonnet::logthis('length of symbol "'.$symbol.'" > 1');
1443: }
1444: $symbol = '<a href="/adm/grades'.
1445: '?symb='.&Apache::lonnet::escape($resource->{'symb'}).
1446: '&student='.$student->{'username'}.
1447: '&userdom='.$student->{'domain'}.
1448: '&command=submission">'.$symbol.'</a>';
1449: }
1450: $value .= $symbol;
1451: }
1452: $Str .= $value;
1453: }
1454: if ($seq->{'randompick'}) {
1455: $max = $seq->{'randompick'};
1456: }
1457: return ($Str,$performance_length,$sum,$max,\@TriesData);
1458: }
1459:
1460: #######################################################
1461: #######################################################
1462:
1463: =pod
1464:
1465: =item &StudentPerformanceOnSequence()
1466:
1467: Inputs:
1468:
1469: =over 4
1470:
1471: =item $student
1472:
1473: =item $studentdata Hash ref to all student data
1474:
1475: =item $seq Hash ref, the sequence we are working on
1476:
1477: =item $links if defined we will output links to each resource.
1478:
1479: =back
1480:
1481: =cut
1482:
1483: #######################################################
1484: #######################################################
1485: sub StudentPerformanceOnSequence {
1486: my ($student,$studentdata,$seq,$links) = @_;
1487: $links = 'no' if (! defined($links));
1488: my $Str = ''; # final result string
1489: my ($score,$max) = (0,0);
1490: my $performance_length = 0;
1491: my $symbol;
1492: my @ScoreData = ();
1493: my $partscore;
1494: foreach my $resource (@{$seq->{'contents'}}) {
1495: next if ($resource->{'type'} ne 'assessment');
1496: my $resource_data = $studentdata->{$resource->{'symb'}};
1497: foreach my $part (@{$resource->{'parts'}}) {
1498: $partscore = undef;
1499: my $weight = &Apache::lonnet::EXT('resource.'.$part.'.weight',
1500: $resource->{'symb'},
1501: $student->{'domain'},
1502: $student->{'username'},
1503: $student->{'section'});
1504: if (!defined($weight) || ($weight eq '')) {
1505: $weight=1;
1506: }
1507: #
1508: $max += $weight; # see the 'excused' branch below...
1509: $performance_length++; # one character per part
1510: $symbol = ' '; # default to space
1511: #
1512: my $awarded = 0;
1513: if (exists($resource_data->{'resource.'.$part.'.awarded'})) {
1514: $awarded = $resource_data->{'resource.'.$part.'.awarded'};
1515: $awarded = 0 if (! $awarded);
1516: }
1517: #
1518: $partscore = $weight*$awarded;
1519: $score += $partscore;
1520: $symbol = $partscore;
1521: if (length($symbol) > 1) {
1522: $symbol = '*';
1523: }
1524: if (exists($resource_data->{'resource.'.$part.'.solved'})) {
1525: my $status = $resource_data->{'resource.'.$part.'.solved'};
1526: if ($status eq 'excused') {
1527: $symbol = 'x';
1528: $max -= $weight; # Do not count 'excused' problems.
1529: }
1530: } else {
1531: # Unsolved. Did they try?
1532: if (exists($resource_data->{'resource.'.$part.'.tries'})){
1533: $symbol = '.';
1534: } else {
1535: $symbol = ' ';
1536: }
1537: }
1538: #
1539: if (! defined($partscore)) {
1540: $partscore = $symbol;
1541: }
1542: push (@ScoreData,$partscore);
1543: #
1544: if ( ($links eq 'yes' && $symbol ne ' ') || ($links eq 'all')) {
1545: $symbol = '<a href="/adm/grades'.
1546: '?symb='.&Apache::lonnet::escape($resource->{'symb'}).
1547: '&student='.$student->{'username'}.
1548: '&userdom='.$student->{'domain'}.
1549: '&command=submission">'.$symbol.'</a>';
1550: }
1551: $Str .= $symbol;
1552: }
1553: }
1554: return ($Str,$performance_length,$score,$max,\@ScoreData);
1555: }
1556:
1557: #######################################################
1558: #######################################################
1559:
1560: =pod
1561:
1562: =item &CreateLegend()
1563:
1564: This function returns a formatted string containing the legend for the
1565: chart. The legend describes the symbols used to represent grades for
1566: problems.
1567:
1568: =cut
1569:
1570: #######################################################
1571: #######################################################
1572: sub CreateLegend {
1573: my $Str = "<p><pre>".
1574: " 1 correct by student in 1 try\n".
1575: " 7 correct by student in 7 tries\n".
1576: " * correct by student in more than 9 tries\n".
1577: " + correct by hand grading or override\n".
1578: " - incorrect by override\n".
1579: " . incorrect attempted\n".
1580: " # ungraded attempted\n".
1581: " not attempted (blank field)\n".
1582: " x excused".
1583: "</pre><p>";
1584: return $Str;
1585: }
1586:
1587: #######################################################
1588: #######################################################
1589:
1590: =pod
1591:
1592: =back
1593:
1594: =cut
1595:
1596: #######################################################
1597: #######################################################
1598:
1599: 1;
1600:
1601: __END__
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