1: # The LearningOnline Network with CAPA
2: #
3: # $Id: lonproblemanalysis.pm,v 1.70 2004/02/18 19:16:55 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: #
9: # LON-CAPA is free software; you can redistribute it and/or modify
10: # it under the terms of the GNU General Public License as published by
11: # the Free Software Foundation; either version 2 of the License, or
12: # (at your option) any later version.
13: #
14: # LON-CAPA is distributed in the hope that it will be useful,
15: # but WITHOUT ANY WARRANTY; without even the implied warranty of
16: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17: # GNU General Public License for more details.
18: #
19: # You should have received a copy of the GNU General Public License
20: # along with LON-CAPA; if not, write to the Free Software
21: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22: #
23: # /home/httpd/html/adm/gpl.txt
24: #
25: # http://www.lon-capa.org/
26: #
27: package Apache::lonproblemanalysis;
28:
29: use strict;
30: use Apache::lonnet();
31: use Apache::loncommon();
32: use Apache::lonhtmlcommon();
33: use Apache::loncoursedata();
34: use Apache::lonstatistics;
35: use Apache::lonlocal;
36: use Apache::lonstathelpers;
37: use HTML::Entities();
38: use Time::Local();
39: use Spreadsheet::WriteExcel();
40:
41: my $plotcolors = ['#33ff00',
42: '#0033cc', '#990000', '#aaaa66', '#663399', '#ff9933',
43: '#66ccff', '#ff9999', '#cccc33', '#660000', '#33cc66',
44: ];
45:
46: my @SubmitButtons = ({ name => 'PrevProblemAnalysis',
47: text => 'Previous Problem' },
48: { name => 'ProblemAnalysis',
49: text => 'Analyze Problem Again' },
50: { name => 'NextProblemAnalysis',
51: text => 'Next Problem' },
52: { name => 'break'},
53: { name => 'ClearCache',
54: text => 'Clear Caches' },
55: { name => 'updatecaches',
56: text => 'Update Student Data' },
57: { name => 'SelectAnother',
58: text => 'Choose a different Problem' },
59: { name => 'ExcelOutput',
60: text => 'Produce Excel Output' });
61:
62:
63: sub BuildProblemAnalysisPage {
64: my ($r,$c)=@_;
65: #
66: my %Saveable_Parameters = ('Status' => 'scalar',
67: 'Section' => 'array',
68: 'NumPlots' => 'scalar',
69: 'AnalyzeAs' => 'scalar',
70: 'AnalyzeOver' => 'scalar',
71: );
72: &Apache::loncommon::store_course_settings('problem_analysis',
73: \%Saveable_Parameters);
74: &Apache::loncommon::restore_course_settings('problem_analysis',
75: \%Saveable_Parameters);
76: #
77: &Apache::lonstatistics::PrepareClasslist();
78: #
79: $r->print('<h2>'.&mt('Detailed Problem Analysis').'</h2>');
80: $r->print(&CreateInterface());
81: #
82: my @Students = @Apache::lonstatistics::Students;
83: #
84: if (@Students < 1) {
85: $r->print('<h2>There are no students in the sections selected</h2>');
86: }
87: #
88: &Apache::loncoursedata::clear_internal_caches();
89: if (exists($ENV{'form.ClearCache'}) ||
90: exists($ENV{'form.updatecaches'}) ||
91: (exists($ENV{'form.firstanalysis'}) &&
92: $ENV{'form.firstanalysis'} ne 'no')) {
93: &Apache::lonstatistics::Gather_Full_Student_Data($r);
94: }
95: if (! exists($ENV{'form.firstanalysis'})) {
96: $r->print('<input type="hidden" name="firstanalysis" value="yes" />');
97: } else {
98: $r->print('<input type="hidden" name="firstanalysis" value="no" />');
99: }
100: $r->rflush();
101: #
102: my $problem_types = '(option|radiobutton|numerical)';
103: if (exists($ENV{'form.problemchoice'}) &&
104: ! exists($ENV{'form.SelectAnother'})) {
105: foreach my $button (@SubmitButtons) {
106: if ($button->{'name'} eq 'break') {
107: $r->print("<br />\n");
108: } else {
109: $r->print('<input type="submit" name="'.$button->{'name'}.'" '.
110: 'value="'.&mt($button->{'text'}).'" />');
111: $r->print(' 'x5);
112: }
113: }
114: #
115: $r->print('<hr />');
116: $r->rflush();
117: #
118: # Determine which problem we are to analyze
119: my $current_problem = &Apache::lonstathelpers::get_target_from_id
120: ($ENV{'form.problemchoice'});
121: #
122: my ($prev,$curr,$next) =
123: &Apache::lonstathelpers::get_prev_curr_next($current_problem,
124: $problem_types,
125: 'response',
126: );
127: if (exists($ENV{'form.PrevProblemAnalysis'}) && defined($prev)) {
128: $current_problem = $prev;
129: } elsif (exists($ENV{'form.NextProblemAnalysis'}) && defined($next)) {
130: $current_problem = $next;
131: } else {
132: $current_problem = $curr;
133: }
134: #
135: # Store the current problem choice and send it out in the form
136: $ENV{'form.problemchoice'} =
137: &Apache::lonstathelpers::make_target_id($current_problem);
138: $r->print('<input type="hidden" name="problemchoice" value="'.
139: $ENV{'form.problemchoice'}.'" />');
140: #
141: if (! defined($current_problem->{'resource'})) {
142: $r->print('resource is undefined');
143: } else {
144: my $resource = $current_problem->{'resource'};
145: $r->print('<h1>'.$resource->{'title'}.'</h1>');
146: $r->print('<h3>'.$resource->{'src'}.'</h3>');
147: $r->print(&Apache::lonstathelpers::render_resource($resource));
148: $r->rflush();
149: my %Data = &get_problem_data($resource->{'src'});
150: my $ProblemData = $Data{$current_problem->{'part'}.
151: '.'.
152: $current_problem->{'respid'}};
153: if ($current_problem->{'resptype'} eq 'option') {
154: &OptionResponseAnalysis($r,$current_problem,
155: $ProblemData,
156: \@Students);
157: } elsif ($current_problem->{'resptype'} eq 'radiobutton') {
158: &RadioResponseAnalysis($r,$current_problem,
159: $ProblemData,
160: \@Students);
161: } elsif ($current_problem->{'resptype'} eq 'numerical') {
162: # if (exists($ENV{'form.ExcelOutput'})) {
163: &prepare_excel_output($r,$current_problem,
164: $ProblemData,\@Students);
165: # } else {
166: # &NumericalResponseAnalysis($r,$current_problem,
167: # $ProblemData,\@Students);
168: # }
169: } else {
170: $r->print('<h2>This analysis is not supported</h2>');
171: }
172: }
173: $r->print('<hr />');
174: } else {
175: $r->print('<input type="submit" name="ProblemAnalysis" value="'.
176: &mt('Analyze Problem').'" />');
177: $r->print(' 'x5);
178: $r->print('<h3>'.&mt('Please select a problem to analyze').'</h3>');
179: $r->print(&Apache::lonstathelpers::ProblemSelector
180: ($problem_types));
181: }
182: }
183:
184:
185: #########################################################
186: #########################################################
187: ##
188: ## Excel output of student answers and correct answers
189: ##
190: #########################################################
191: #########################################################
192: sub prepare_excel_output {
193: my ($r,$problem,$ProblemData,$Students) = @_;
194: my ($resource,$respid,$partid) = ($problem->{'resource'},
195: $problem->{'respid'},
196: $problem->{'part'});
197: $r->print('<h2>'.
198: &mt('Preparing Excel spreadsheet of student responses').
199: '</h2>');
200: #
201: &GetStudentAnswers($r,$problem,$Students);
202: #
203: my @Columns = ( 'username','domain','attempt','time',
204: 'submission','correct', 'grading','awarded','weight',
205: 'score');
206: my $awarded_col = 7;
207: my $weight_col = 8;
208: #
209: # Create excel worksheet
210: my $filename = '/prtspool/'.
211: $ENV{'user.name'}.'_'.$ENV{'user.domain'}.'_'.
212: time.'_'.rand(1000000000).'.xls';
213: my $workbook = Spreadsheet::WriteExcel->new('/home/httpd'.$filename);
214: if (! defined($workbook)) {
215: $r->log_error("Error creating excel spreadsheet $filename: $!");
216: $r->print('<p>'.&mt("Unable to create new Excel file. ".
217: "This error has been logged. ".
218: "Please alert your LON-CAPA administrator").
219: '</p>');
220: return undef;
221: }
222: #
223: $workbook->set_tempdir('/home/httpd/perl/tmp');
224: #
225: my $format = &Apache::loncommon::define_excel_formats($workbook);
226: my $worksheet = $workbook->addworksheet('Student Submission Data');
227: #
228: # Make sure we get new weight data instead of data on a 10 minute delay
229: &Apache::lonnet::clear_EXT_cache_status();
230: #
231: # Put on the standard headers and whatnot
232: my $rows_output=0;
233: $worksheet->write($rows_output++,0,$resource->{'title'},$format->{'h1'});
234: $worksheet->write($rows_output++,0,$resource->{'src'},$format->{'h3'});
235: $rows_output++;
236: $worksheet->write_row($rows_output++,0,\@Columns,$format->{'bold'});
237: #
238: # Populate the worksheet with the student data
239: foreach my $student (@$Students) {
240: my $results = &Apache::loncoursedata::get_response_data_by_student
241: ($student,$resource->{'symb'},$respid);
242: my %row;
243: $row{'username'} = $student->{'username'};
244: $row{'domain'} = $student->{'domain'};
245: $row{'correct'} = $student->{'answer'};
246: $row{'weight'} = &Apache::lonnet::EXT
247: ('resource.'.$partid.'.weight',$resource->{'symb'},
248: undef,undef,undef);
249: if (! defined($results) || ref($results) ne 'ARRAY') {
250: $row{'score'} = '='.
251: &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell
252: ($rows_output,$awarded_col)
253: .'*'.
254: &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell
255: ($rows_output,$weight_col);
256: my $cols_output = 0;
257: foreach my $col (@Columns) {
258: if (! exists($row{$col})) {
259: $cols_output++;
260: next;
261: }
262: $worksheet->write($rows_output,$cols_output++,$row{$col});
263: }
264: $rows_output++;
265: } else {
266: foreach my $response (@$results) {
267: delete($row{'time'});
268: delete($row{'attempt'});
269: delete($row{'submission'});
270: delete($row{'awarded'});
271: delete($row{'grading'});
272: delete($row{'score'});
273: my %row_format;
274: #
275: # Time is handled differently
276: $row{'time'} = &calc_serial(
277: $response->[&Apache::loncoursedata::RDs_timestamp()]);
278: $row_format{'time'}=$format->{'date'};
279: #
280: $row{'attempt'} = $response->[
281: &Apache::loncoursedata::RDs_tries()];
282: $row{'submission'} = $response->[
283: &Apache::loncoursedata::RDs_submission()];
284: $row{'grading'} = $response->[
285: &Apache::loncoursedata::RDs_awarddetail()];
286: $row{'awarded'} = $response->[
287: &Apache::loncoursedata::RDs_awarded()];
288: $row{'score'} = '='.
289: &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell
290: ($rows_output,$awarded_col)
291: .'*'.
292: &Spreadsheet::WriteExcel::Utility::xl_rowcol_to_cell
293: ($rows_output,$weight_col);
294: my $cols_output = 0;
295: foreach my $col (@Columns) {
296: $worksheet->write($rows_output,$cols_output++,$row{$col},
297: $row_format{$col});
298: }
299: $rows_output++;
300: }
301: } # End of else clause on if (! defined($results) ....
302: }
303: #
304: # Close the excel file
305: $workbook->close();
306: #
307: # Write a link to allow them to download it
308: $r->print('<p><a href="'.$filename.'">'.
309: &mt('Your Excel spreadsheet.').
310: '</a></p>'."\n");
311:
312: }
313:
314:
315: #########################################################
316: #########################################################
317: ##
318: ## Numerical Response Routines
319: ##
320: #########################################################
321: #########################################################
322: sub NumericalResponseAnalysis {
323: my ($r,$problem,$ProblemData,$Students) = @_;
324: $r->print('<h2>This analysis is not yet supported</h2>');
325: my ($resource,$respid) = ($problem->{'resource'},
326: $problem->{'respid'});
327: my $analysis_html;
328: my $PerformanceData =
329: &Apache::loncoursedata::get_response_data
330: ($Students,$resource->{'symb'},$respid);
331: if (! defined($PerformanceData) ||
332: ref($PerformanceData) ne 'ARRAY' ) {
333: $analysis_html = '<h2>'.
334: &mt('There is no submission data for this resource').
335: '</h2>';
336: $r->print($analysis_html);
337: return;
338: }
339: my ($max,$min) = &GetStudentAnswers($r,$problem,$Students);
340: $r->print('Maximum = '.$max.' Minimum = '.$min);
341: my $max_students = 0;
342: my %Data;
343: foreach my $student (@$Students) {
344: my $answer = $student->{'answer'};
345: $Data{$answer}++;
346: if ($max_students < $Data{$answer}) {
347: $max_students = $Data{$answer};
348: }
349: }
350: foreach (5,10,20,25,50,75,100,150,200,250,500,1000,1500,2000,2500,5000) {
351: if ($max_students < $_) {
352: $max_students = $_;
353: last;
354: }
355: }
356: my @Labels = sort {$a <=> $b } keys(%Data);
357: $r->print('number of labels = '.scalar(@Labels));
358: my @PlotData = @Data{@Labels};
359: $r->print('number of PlotData = '.scalar(@PlotData));
360: my $graph =
361: &Apache::loncommon::DrawXYGraph('Correct Answer Distribution',
362: 'Correct Answer',
363: 'Number of students',
364: $max_students,
365: undef,
366: \@Labels,
367: [\@PlotData],
368: (xskip=>10));
369: $r->print($graph);
370: return;
371: }
372:
373: sub GetStudentAnswers {
374: my ($r,$problem,$Students) = @_;
375: my %Answers;
376: my ($resource,$partid,$respid) = ($problem->{'resource'},
377: $problem->{'part'},
378: $problem->{'respid'});
379: # Open progress window
380: my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin
381: ($r,'Student Answer Compilation Status',
382: 'Student Answer Compilation Progress', scalar(@$Students));
383: $r->print("<table>\n");
384: $r->rflush();
385: foreach my $student (@$Students) {
386: my $sname = $student->{'username'};
387: my $sdom = $student->{'domain'};
388: my $answer = &analyze_problem_as_student($resource,
389: $sname,$sdom,
390: $partid,$respid);
391: &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
392: &mt('last student'));
393: $student->{'answer'} = $answer;
394: }
395: $r->print("</table>\n");
396: $r->rflush();
397: # close progress window
398: &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
399: return;
400: }
401:
402: sub build_student_data_worksheet {
403: my ($workbook,$format) = @_;
404: my $rows_output = 3;
405: my $cols_output = 0;
406: my $worksheet = $workbook->addworksheet('Student Data');
407: $worksheet->write($rows_output++,0,'Student Data',$format->{'h3'});
408: my @Headers = ('full name','username','domain','section',
409: "student\nnumber",'identifier');
410: $worksheet->write_row($rows_output++,0,\@Headers,$format->{'header'});
411: my @Students = @Apache::lonstatistics::Students;
412: my $studentrows = &Apache::loncoursedata::get_student_data(\@Students);
413: my %ids;
414: foreach my $row (@$studentrows) {
415: my ($mysqlid,$student) = @$row;
416: $ids{$student}=$mysqlid;
417: }
418: foreach my $student (@Students) {
419: my $name_domain = $student->{'username'}.':'.$student->{'domain'};
420: $worksheet->write_row($rows_output++,0,
421: [$student->{'fullname'},
422: $student->{'username'},$student->{'domain'},
423: $student->{'section'},$student->{'id'},
424: $ids{$name_domain}]);
425: }
426: return $worksheet;
427: }
428:
429: #########################################################
430: #########################################################
431: ##
432: ## Radio Response Routines
433: ##
434: #########################################################
435: #########################################################
436: sub RadioResponseAnalysis {
437: my ($r,$problem,$ProblemData,$Students) = @_;
438: my ($resource,$respid) = ($problem->{'resource'},
439: $problem->{'respid'});
440: my $analysis_html;
441: my $PerformanceData =
442: &Apache::loncoursedata::get_response_data
443: ($Students,$resource->{'symb'},$respid);
444: if (! defined($PerformanceData) ||
445: ref($PerformanceData) ne 'ARRAY' ) {
446: $analysis_html = '<h2>'.
447: &mt('There is no submission data for this resource').
448: '</h2>';
449: $r->print($analysis_html);
450: return;
451: }
452: if (exists($ENV{'form.ExcelOutput'})) {
453: $analysis_html .= &RR_Excel_output($r,$problem->{'resource'},
454: $PerformanceData,$ProblemData);
455: } elsif ($ENV{'form.AnalyzeOver'} eq 'Tries') {
456: $analysis_html .= &RR_Tries_Analysis($r,$problem->{'resource'},
457: $PerformanceData,$ProblemData);
458: } elsif ($ENV{'form.AnalyzeOver'} eq 'Time') {
459: $analysis_html .= &RR_Time_Analysis($r,$problem->{'resource'},
460: $PerformanceData,$ProblemData);
461: } else {
462: $analysis_html .= '<h2>'.
463: &mt('The analysis you have selected is not supported at this time').
464: '</h2>';
465: }
466: $r->print($analysis_html);
467: }
468:
469: sub RR_Excel_output {
470: my ($r,$PerformanceData,$ProblemData) = @_;
471: return '<h1>No!</h1>';
472: }
473:
474: sub RR_Tries_Analysis {
475: my ($r,$resource,$PerformanceData,$ProblemData) = @_;
476: my $analysis_html;
477: my $mintries = 1;
478: my $maxtries = $ENV{'form.NumPlots'};
479: my ($table,$Foils,$Concepts) = &build_foil_index($ProblemData);
480: if ((! defined($Concepts)) || ((@$Concepts < 2) &&
481: ($ENV{'form.AnalyzeAs'} ne 'Foils'))) {
482: $table = '<h3>'.
483: &mt('Not enough data for concept analysis. '.
484: 'Performing Foil Analysis').
485: '</h3>'.$table;
486: $ENV{'form.AnalyzeAs'} = 'Foils';
487: }
488: $analysis_html .= $table;
489: my @TryData = &RR_tries_data_analysis($r,$PerformanceData);
490: # if ($ENV{'form.AnalyzeAs'} eq 'Foils') {
491: $analysis_html .= &RR_Tries_Foil_Analysis($mintries,$maxtries,$Foils,
492: \@TryData,$ProblemData);
493: # } else {
494: # $analysis_html = &RR_Tries_Concept_Analysis($mintries,$maxtries,
495: # $Concepts,
496: # \@TryData,
497: # $ProblemData);
498: # }
499: return $analysis_html;
500: }
501:
502: sub RR_tries_data_analysis {
503: my ($r,$Attempt_data) = @_;
504: my @TryData;
505: foreach my $attempt (@$Attempt_data) {
506: my %Attempt = &hashify_attempt($attempt);
507: my ($answer,undef) = split('=',$Attempt{'submission'});
508: $TryData[$Attempt{'tries'}]->{$answer}++;
509: }
510: return @TryData;
511: }
512:
513: sub RR_Time_Analysis {
514: my ($r,$PerformanceData,$ProblemData) = @_;
515: my $html;
516: return $html;
517: }
518:
519: sub RR_Tries_Foil_Analysis {
520: my ($min,$max,$Foils,$TryData,$ProblemData) = @_;
521: my $html;
522: #
523: # Compute the data neccessary to make the plots
524: for (my $try=$min;$try<=$max;$try++) {
525: my @PlotData_Correct;
526: my @PlotData_Incorrect;
527: next if ($try > scalar(@{$TryData}));
528: next if (! defined($TryData->[$try]));
529: my %DataSet = %{$TryData->[$try]};
530: my $total = 0;
531: foreach my $foilid (@$Foils) {
532: $total += $DataSet{$foilid};
533: }
534: foreach my $foilid (@$Foils) {
535: if ($total == 0) {
536: push (@PlotData_Correct,0);
537: push (@PlotData_Incorrect,0);
538: } else {
539: if ($ProblemData->{'_Foils'}->{$foilid}->{'value'} eq 'true') {
540: push (@PlotData_Correct,
541: int(100*$DataSet{$foilid}/$total));
542: push (@PlotData_Incorrect,0);
543: } else {
544: push (@PlotData_Correct,0);
545: push (@PlotData_Incorrect,
546: int(100*$DataSet{$foilid}/$total));
547: }
548: }
549: }
550: my $title='Attempt '.$try;
551: my $xlabel = $total.' Submissions';
552: $html.= &Apache::loncommon::DrawBarGraph($title,
553: $xlabel,
554: 'Percent Choosing',
555: 100,
556: ['#33ff00','#ff3300'],
557: undef,
558: \@PlotData_Correct,
559: \@PlotData_Incorrect);
560: }
561: return $html;
562: }
563:
564: sub RR_Tries_Concept_Analysis {
565: my ($min,$max,$Concepts,$ResponseData,$ProblemData) = @_;
566: my $html;
567: return $html;
568: }
569:
570: sub RR_Time_Foil_Analysis {
571: my ($min,$max,$Foils,$ResponseData,$ProblemData) = @_;
572: my $html;
573: return $html;
574: }
575:
576: sub RR_Time_Concept_Analysis {
577: my ($min,$max,$Concepts,$ResponseData,$ProblemData) = @_;
578: my $html;
579: return $html;
580: }
581:
582:
583: sub get_Radio_problem_data {
584: my ($url) = @_;
585: my $Answ=&Apache::lonnet::ssi($url,('grade_target' => 'analyze'));
586: (my $garbage,$Answ)=split('_HASH_REF__',$Answ,2);
587: my %Answer = &Apache::lonnet::str2hash($Answ);
588: my %Partdata;
589: foreach my $part (@{$Answer{'parts'}}) {
590: while (my($key,$value) = each(%Answer)) {
591: # if (ref($value) eq 'ARRAY') {
592: # &Apache::lonnet::logthis('is ref part:'.$part.' '.$key.'='.join(',',@$value));
593: # } else {
594: # &Apache::lonnet::logthis('notref part:'.$part.' '.$key.'='.$value);
595: # }
596: next if ($key !~ /^$part/);
597: $key =~ s/^$part\.//;
598: if ($key eq 'foils') {
599: $Partdata{$part}->{'_Foils'}=$value;
600: } elsif ($key eq 'options') {
601: $Partdata{$part}->{'_Options'}=$value;
602: } elsif ($key eq 'shown') {
603: $Partdata{$part}->{'_Shown'}=$value;
604: } elsif ($key =~ /^foil.value.(.*)$/) {
605: $Partdata{$part}->{$1}->{'value'}=$value;
606: } elsif ($key =~ /^foil.text.(.*)$/) {
607: $Partdata{$part}->{$1}->{'text'}=$value;
608: }
609: }
610: }
611: return %Partdata;
612: }
613:
614: #########################################################
615: #########################################################
616: ##
617: ## Option Response Routines
618: ##
619: #########################################################
620: #########################################################
621: sub OptionResponseAnalysis {
622: my ($r,$problem,$ProblemData,$Students) = @_;
623: my ($resource,$respid) = ($problem->{'resource'},
624: $problem->{'respid'});
625: # Note: part data is not needed.
626: my $PerformanceData =
627: &Apache::loncoursedata::get_response_data
628: ($Students,$resource->{'symb'},$respid);
629: if (! defined($PerformanceData) ||
630: ref($PerformanceData) ne 'ARRAY' ) {
631: $r->print('<h2>'.
632: &mt('There is no student data for this problem.').
633: '</h2>');
634: } else {
635: $r->rflush();
636: if (exists($ENV{'form.ExcelOutput'})) {
637: my $result = &OR_excel_sheet($r,$resource,
638: $PerformanceData,
639: $ProblemData);
640: $r->print($result);
641: $r->rflush();
642: } else {
643: if ($ENV{'form.AnalyzeOver'} eq 'Tries') {
644: my $analysis_html = &OR_tries_analysis($r,
645: $PerformanceData,
646: $ProblemData);
647: $r->print($analysis_html);
648: $r->rflush();
649: } elsif ($ENV{'form.AnalyzeOver'} eq 'Time') {
650: my $analysis_html = &OR_time_analysis($PerformanceData,
651: $ProblemData);
652: $r->print($analysis_html);
653: $r->rflush();
654: } else {
655: $r->print('<h2>'.
656: &mt('The analysis you have selected is '.
657: 'not supported at this time').
658: '</h2>');
659: }
660: }
661: }
662: }
663:
664: #########################################################
665: #
666: # Option Response: Tries Analysis
667: #
668: #########################################################
669: sub OR_tries_analysis {
670: my ($r,$PerformanceData,$ORdata) = @_;
671: my $mintries = 1;
672: my $maxtries = $ENV{'form.NumPlots'};
673: my ($table,$Foils,$Concepts) = &build_foil_index($ORdata);
674: if ((@$Concepts < 2) && ($ENV{'form.AnalyzeAs'} ne 'Foils')) {
675: $table = '<h3>'.
676: &mt('Not enough data for concept analysis. '.
677: 'Performing Foil Analysis').
678: '</h3>'.$table;
679: $ENV{'form.AnalyzeAs'} = 'Foils';
680: }
681: my %ResponseData = &OR_analyze_by_tries($r,$PerformanceData,
682: $mintries,$maxtries);
683: my $analysis = '';
684: if ($ENV{'form.AnalyzeAs'} eq 'Foils') {
685: $analysis = &OR_Tries_Foil_Analysis($mintries,$maxtries,$Foils,
686: \%ResponseData,$ORdata);
687: } else {
688: $analysis = &OR_Tries_Concept_Analysis($mintries,$maxtries,
689: $Concepts,\%ResponseData,$ORdata);
690: }
691: $table .= $analysis;
692: return $table;
693: }
694:
695: sub OR_Tries_Foil_Analysis {
696: my ($mintries,$maxtries,$Foils,$respdat,$ORdata) = @_;
697: my %ResponseData = %$respdat;
698: #
699: # Compute the data neccessary to make the plots
700: my @PlotData;
701: foreach my $foilid (@$Foils) {
702: for (my $i=$mintries;$i<=$maxtries;$i++) {
703: if ($ResponseData{$foilid}->[$i]->{'_total'} == 0) {
704: push(@{$PlotData[$i]->{'_correct'}},0);
705: } else {
706: push(@{$PlotData[$i]->{'_correct'}},
707: 100*$ResponseData{$foilid}->[$i]->{'_correct'}/
708: $ResponseData{$foilid}->[$i]->{'_total'});
709: }
710: foreach my $option (@{$ORdata->{'_Options'}}) {
711: push(@{$PlotData[$i]->{'_total'}},
712: $ResponseData{$foilid}->[$i]->{'_total'});
713: if ($ResponseData{$foilid}->[$i]->{'_total'} == 0) {
714: push (@{$PlotData[$i]->{$option}},0);
715: } else {
716: if ($ResponseData{$foilid}->[$i]->{'_total'} ==
717: $ResponseData{$foilid}->[$i]->{'_correct'}) {
718: push(@{$PlotData[$i]->{$option}},0);
719: } else {
720: push (@{$PlotData[$i]->{$option}},
721: 100 * $ResponseData{$foilid}->[$i]->{$option} /
722: ($ResponseData{$foilid}->[$i]->{'_total'} -
723: $ResponseData{$foilid}->[$i]->{'_correct'}));
724: }
725: }
726: }
727: }
728: }
729: #
730: # Build a table for the plots
731: my $analysis_html = "<table>\n";
732: my $foilkey = &build_option_index($ORdata);
733: for (my $i=$mintries;$i<=$maxtries;$i++) {
734: my $count = $ResponseData{'_total'}->[$i];
735: if ($count == 0) {
736: $count = 'no submissions';
737: } elsif ($count == 1) {
738: $count = '1 submission';
739: } else {
740: $count = $count.' submissions';
741: }
742: my $title = 'Attempt '.$i.', '.$count;
743: my @Datasets;
744: foreach my $option ('_correct',@{$ORdata->{'_Options'}}) {
745: next if (! exists($PlotData[$i]->{$option}));
746: push(@Datasets,$PlotData[$i]->{$option});
747: }
748: my $correctgraph = &Apache::loncommon::DrawBarGraph
749: ($title,'Foil Number','Percent Correct',
750: 100,$plotcolors,undef,$Datasets[0]);
751: $analysis_html.= '<tr><td>'.$correctgraph.'</td>';
752: ##
753: ##
754: next if (! defined($Datasets[0]));
755: for (my $i=0; $i< scalar(@{$Datasets[0]});$i++) {
756: $Datasets[0]->[$i]=0;
757: }
758: $count = $ResponseData{'_total'}->[$i]-$ResponseData{'_correct'}->[$i];
759: if ($count == 0) {
760: $count = 'no submissions';
761: } elsif ($count == 1) {
762: $count = '1 submission';
763: } else {
764: $count = $count.' submissions';
765: }
766: $title = 'Attempt '.$i.', '.$count;
767: my $incorrectgraph = &Apache::loncommon::DrawBarGraph
768: ($title,'Foil Number','% Option Chosen Incorrectly',
769: 100,$plotcolors,undef,@Datasets);
770: $analysis_html.= '<td>'.$incorrectgraph.'</td>';
771: $analysis_html.= '<td>'.$foilkey."<td></tr>\n";
772: }
773: $analysis_html .= "</table>\n";
774: return $analysis_html;
775: }
776:
777: sub OR_Tries_Concept_Analysis {
778: my ($mintries,$maxtries,$Concepts,$respdat,$ORdata) = @_;
779: my %ResponseData = %$respdat;
780: my $analysis_html = "<table>\n";
781: #
782: # Compute the data neccessary to make the plots
783: my @PlotData;
784: # Concept analysis
785: #
786: # Note: we do not bother with characterizing the students incorrect
787: # answers at the concept level because an incorrect answer for one foil
788: # may be a correct answer for another foil.
789: my %ConceptData;
790: foreach my $concept (@{$Concepts}) {
791: for (my $i=$mintries;$i<=$maxtries;$i++) {
792: #
793: # Gather the per-attempt data
794: my $cdata = $ConceptData{$concept}->[$i];
795: foreach my $foilid (@{$concept->{'foils'}}) {
796: $cdata->{'_correct'} +=
797: $ResponseData{$foilid}->[$i]->{'_correct'};
798: $cdata->{'_total'} +=
799: $ResponseData{$foilid}->[$i]->{'_total'};
800: }
801: push (@{$PlotData[$i]->{'_total'}},$cdata->{'_total'});
802: if ($cdata->{'_total'} == 0) {
803: push (@{$PlotData[$i]->{'_correct'}},0);
804: } else {
805: push (@{$PlotData[$i]->{'_correct'}},
806: 100*$cdata->{'_correct'}/$cdata->{'_total'});
807: }
808: }
809: }
810: # Build a table for the plots
811: for (my $i=$mintries;$i<=$maxtries;$i++) {
812: my $minstu = $PlotData[$i]->{'_total'}->[0];
813: my $maxstu = $PlotData[$i]->{'_total'}->[0];
814: foreach my $count (@{$PlotData[$i]->{'_total'}}) {
815: if ($minstu > $count) {
816: $minstu = $count;
817: }
818: if ($maxstu < $count) {
819: $maxstu = $count;
820: }
821: }
822: $maxstu = 0 if (! defined($maxstu));
823: $minstu = 0 if (! defined($minstu));
824: my $title;
825: my $count = $ResponseData{'_total'}->[$i];
826: if ($count == 0) {
827: $count = 'no submissions';
828: } elsif ($count == 1) {
829: $count = '1 submission';
830: } else {
831: $count = $count.' submissions';
832: }
833: $title = 'Attempt '.$i.', '.$count;
834: my $graphlink = &Apache::loncommon::DrawBarGraph
835: ($title,'Concept Number','Percent Correct',
836: 100,$plotcolors,undef,$PlotData[$i]->{'_correct'});
837: $analysis_html.= '<tr><td>'.$graphlink."</td></tr>\n";
838: }
839: $analysis_html .= "</table>\n";
840: return $analysis_html;
841: }
842:
843: sub OR_analyze_by_tries {
844: my ($r,$PerformanceData,$mintries,$maxtries) = @_;
845: my %Trydata;
846: $mintries = 1 if (! defined($mintries) || $mintries < 1);
847: $maxtries = $mintries if (! defined($maxtries) || $maxtries < $mintries);
848: foreach my $row (@$PerformanceData) {
849: next if (! defined($row));
850: my $tries = &get_tries_from_row($row);
851: my %Row = &Process_OR_Row($row);
852: next if (! %Row);
853: while (my ($foilid,$href) = each(%Row)) {
854: if (! ref($href)) {
855: $Trydata{$foilid}->[$tries] += $href;
856: next;
857: }
858: while (my ($option,$value) = each(%$href)) {
859: $Trydata{$foilid}->[$tries]->{$option}+=$value;
860: }
861: }
862: }
863: return %Trydata;
864: }
865:
866: #########################################################
867: #
868: # Option Response: Time Analysis
869: #
870: #########################################################
871: sub OR_time_analysis {
872: my ($PerformanceData,$ORdata) = @_;
873: my ($table,$Foils,$Concepts) = &build_foil_index($ORdata);
874: if ((@$Concepts < 2) && ($ENV{'form.AnalyzeAs'} ne 'Foils')) {
875: $table = '<h3>'.
876: &mt('Not enough data for concept analysis. '.
877: 'Performing Foil Analysis').
878: '</h3>'.$table;
879: $ENV{'form.AnalyzeAs'} = 'Foils';
880: }
881: my $num_plots = $ENV{'form.NumPlots'};
882: my $num_data = scalar(@$PerformanceData)-1;
883: my $percent = sprintf('%2f',100/$num_plots);
884: #
885: $table .= "<table>\n";
886: for (my $i=0;$i<$num_plots;$i++) {
887: ##
888: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
889: ('startdate_'.$i);
890: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
891: ('enddate_'.$i);
892: if (! defined($starttime) || ! defined($endtime)) {
893: my $sec_in_day = 86400;
894: my $last_sub_time = &get_time_from_row($PerformanceData->[-1]);
895: my ($sday,$smon,$syear);
896: (undef,undef,undef,$sday,$smon,$syear) =
897: localtime($last_sub_time - $sec_in_day*$i);
898: $starttime = &Time::Local::timelocal(0,0,0,$sday,$smon,$syear);
899: $endtime = $starttime + $sec_in_day;
900: if ($i == ($num_plots -1 )) {
901: $starttime = &get_time_from_row($PerformanceData->[0]);
902: }
903: }
904: my $startdateform = &Apache::lonhtmlcommon::date_setter
905: ('Statistics','startdate_'.$i,$starttime);
906: my $enddateform = &Apache::lonhtmlcommon::date_setter
907: ('Statistics','enddate_'.$i,$endtime);
908: #
909: my $begin_index;
910: my $end_index;
911: my $j;
912: while (++$j < scalar(@$PerformanceData)) {
913: last if (&get_time_from_row($PerformanceData->[$j])
914: > $starttime);
915: }
916: $begin_index = $j;
917: while (++$j < scalar(@$PerformanceData)) {
918: last if (&get_time_from_row($PerformanceData->[$j]) > $endtime);
919: }
920: $end_index = $j;
921: ##
922: my $interval = {
923: begin_index => $begin_index,
924: end_index => $end_index,
925: startdateform => $startdateform,
926: enddateform => $enddateform,
927: };
928: if ($ENV{'form.AnalyzeAs'} eq 'Foils') {
929: $table .= &OR_Foil_Time_Analysis($PerformanceData,$ORdata,$Foils,
930: $interval);
931: } else {
932: $table .= &OR_Concept_Time_Analysis($PerformanceData,$ORdata,
933: $Concepts,$interval);
934: }
935: }
936: #
937: return $table;
938: }
939:
940: sub OR_Foil_Time_Analysis {
941: my ($PerformanceData,$ORdata,$Foils,$interval) = @_;
942: my $analysis_html;
943: my $foilkey = &build_option_index($ORdata);
944: my ($begin_index,$end_index) = ($interval->{'begin_index'},
945: $interval->{'end_index'});
946: my %TimeData;
947: #
948: # Compute the number getting the foils correct or incorrects
949: for (my $j=$begin_index;$j<=$end_index;$j++) {
950: my $row = $PerformanceData->[$j];
951: next if (! defined($row));
952: my %Row = &Process_OR_Row($row);
953: while (my ($foilid,$href) = each(%Row)) {
954: if (! ref($href)) {
955: $TimeData{$foilid} += $href;
956: next;
957: }
958: while (my ($option,$value) = each(%$href)) {
959: $TimeData{$foilid}->{$option}+=$value;
960: }
961: }
962: }
963: my @Plotdata;
964: foreach my $foil (@$Foils) {
965: my $total = $TimeData{$foil}->{'_total'};
966: if ($total == 0) {
967: push(@{$Plotdata[0]},0);
968: } else {
969: push(@{$Plotdata[0]},
970: 100 * $TimeData{$foil}->{'_correct'} / $total);
971: }
972: my $total_incorrect = $total - $TimeData{$foil}->{'_correct'};
973: my $optionidx = 1;
974: foreach my $option (@{$ORdata->{'_Options'}}) {
975: if ($total_incorrect == 0) {
976: push(@{$Plotdata[$optionidx]},0);
977: } else {
978: push(@{$Plotdata[$optionidx]},
979: 100 * $TimeData{$foil}->{$option} / $total_incorrect);
980: }
981: } continue {
982: $optionidx++;
983: }
984: }
985: #
986: # Create the plot
987: my $count = $end_index-$begin_index;
988: my $title;
989: if ($count == 0) {
990: $title = 'no submissions';
991: } elsif ($count == 1) {
992: $title = 'one submission';
993: } else {
994: $title = $count.' submissions';
995: }
996: my $correctplot = &Apache::loncommon::DrawBarGraph($title,
997: 'Foil Number',
998: 'Percent Correct',
999: 100,
1000: $plotcolors,
1001: undef,
1002: $Plotdata[0]);
1003: for (my $j=0; $j< scalar(@{$Plotdata[0]});$j++) {
1004: $Plotdata[0]->[$j]=0;
1005: }
1006: $count = $end_index-$begin_index-$TimeData{'_correct'};
1007: if ($count == 0) {
1008: $title = 'no submissions';
1009: } elsif ($count == 1) {
1010: $title = 'one submission';
1011: } else {
1012: $title = $count.' submissions';
1013: }
1014: my $incorrectplot = &Apache::loncommon::DrawBarGraph($title,
1015: 'Foil Number',
1016: 'Incorrect Option Choice',
1017: 100,
1018: $plotcolors,
1019: undef,
1020: @Plotdata);
1021: $analysis_html.='<tr>'.
1022: '<td>'.$correctplot.'</td>'.
1023: '<td>'.$incorrectplot.'</td>'.
1024: '<td align="left" valign="top">'.$foilkey.'</td>'."</tr>\n";
1025: $analysis_html.= '<tr>'.'<td colspan="3">'.
1026: '<b>Start Time</b>:'.
1027: ' '.$interval->{'startdateform'}.'<br />'.
1028: '<b>End Time</b> : '.
1029: ' '.$interval->{'enddateform'}.'<br />'.
1030: # '<b>Plot Title</b> :'.
1031: # (" "x3).$interval->{'titleform'}.
1032: '</td>'.
1033: "</tr>\n";
1034: return $analysis_html;
1035: }
1036:
1037: sub OR_Concept_Time_Analysis {
1038: my ($PerformanceData,$ORdata,$Concepts,$interval) = @_;
1039: my $analysis_html;
1040: ##
1041: ## Determine starttime, endtime, startindex, endindex
1042: my ($begin_index,$end_index) = ($interval->{'begin_index'},
1043: $interval->{'end_index'});
1044: my %TimeData;
1045: #
1046: # Compute the number getting the foils correct or incorrects
1047: for (my $j=$begin_index;$j<=$end_index;$j++) {
1048: my $row = $PerformanceData->[$j];
1049: next if (! defined($row));
1050: my %Row = &Process_OR_Row($row);
1051: while (my ($foilid,$href) = each(%Row)) {
1052: if (! ref($href)) {
1053: $TimeData{$foilid} += $href;
1054: next;
1055: }
1056: while (my ($option,$value) = each(%$href)) {
1057: $TimeData{$foilid}->{$option}+=$value;
1058: }
1059: }
1060: }
1061: #
1062: # Put the data in plottable form
1063: my @Plotdata;
1064: foreach my $concept (@$Concepts) {
1065: my ($total,$correct);
1066: foreach my $foil (@{$concept->{'foils'}}) {
1067: $total += $TimeData{$foil}->{'_total'};
1068: $correct += $TimeData{$foil}->{'_correct'};
1069: }
1070: if ($total == 0) {
1071: push(@Plotdata,0);
1072: } else {
1073: push(@Plotdata,100 * $correct / $total);
1074: }
1075: }
1076: #
1077: # Create the plot
1078: my $title = ($end_index - $begin_index).' submissions';
1079: my $correctplot = &Apache::loncommon::DrawBarGraph($title,
1080: 'Concept Number',
1081: 'Percent Correct',
1082: 100,
1083: $plotcolors,
1084: undef,
1085: \@Plotdata);
1086: $analysis_html.='<tr>'.
1087: '<td>'.$correctplot.'</td>'.
1088: '<td align="left" valign="top">'.
1089: '<b>Start Time</b>: '.$interval->{'startdateform'}.'<br />'.
1090: '<b>End Time</b> : '.
1091: ' '.$interval->{'enddateform'}.'<br />'.
1092: # '<b>Plot Title</b> :'.(" "x3).
1093: # $interval->{'titleform'}.
1094: '</td>'.
1095: "</tr>\n";
1096: return $analysis_html;
1097: }
1098:
1099: #########################################################
1100: #########################################################
1101: ##
1102: ## Excel output
1103: ##
1104: #########################################################
1105: #########################################################
1106: sub OR_excel_sheet {
1107: my ($r,$resource,$PerformanceData,$ORdata) = @_;
1108: my $response = '';
1109: my (undef,$Foils,$Concepts) = &build_foil_index($ORdata);
1110: #
1111: # Create excel worksheet
1112: my $filename = '/prtspool/'.
1113: $ENV{'user.name'}.'_'.$ENV{'user.domain'}.'_'.
1114: time.'_'.rand(1000000000).'.xls';
1115: my $workbook = Spreadsheet::WriteExcel->new('/home/httpd'.$filename);
1116: if (! defined($workbook)) {
1117: $r->log_error("Error creating excel spreadsheet $filename: $!");
1118: $r->print('<p>'.&mt("Unable to create new Excel file. ".
1119: "This error has been logged. ".
1120: "Please alert your LON-CAPA administrator").
1121: '</p>');
1122: return undef;
1123: }
1124: #
1125: $workbook->set_tempdir('/home/httpd/perl/tmp');
1126: my $format = &Apache::loncommon::define_excel_formats($workbook);
1127: #
1128: # Create and populate main worksheets
1129: my $problem_data_sheet = $workbook->addworksheet('Problem Data');
1130: my $student_data_sheet = &build_student_data_worksheet($workbook,$format);
1131: my $response_data_sheet = $workbook->addworksheet('Response Data');
1132: foreach my $sheet ($problem_data_sheet,$student_data_sheet,
1133: $response_data_sheet) {
1134: $sheet->write(0,0,$resource->{'title'},$format->{'h2'});
1135: $sheet->write(1,0,$resource->{'src'},$format->{'h3'});
1136: }
1137: #
1138: my $result;
1139: $result = &OR_build_problem_data_worksheet($problem_data_sheet,$format,
1140: $Concepts,$ORdata);
1141: if ($result ne 'okay') {
1142: # Do something useful
1143: }
1144: $result = &OR_build_response_data_worksheet($response_data_sheet,$format,
1145: $PerformanceData,$Foils,
1146: $ORdata);
1147: if ($result ne 'okay') {
1148: # Do something useful
1149: }
1150: $response_data_sheet->activate();
1151: #
1152: # Close the excel file
1153: $workbook->close();
1154: #
1155: # Write a link to allow them to download it
1156: $result .= '<h2>'.&mt('Excel Raw Data Output').'</h2>'.
1157: '<p><a href="'.$filename.'">'.
1158: &mt('Your Excel spreadsheet.').
1159: '</a></p>'."\n";
1160: return $result;
1161: }
1162:
1163: sub OR_build_problem_data_worksheet {
1164: my ($worksheet,$format,$Concepts,$ORdata) = @_;
1165: my $rows_output = 3;
1166: my $cols_output = 0;
1167: $worksheet->write($rows_output++,0,'Problem Structure',$format->{'h3'});
1168: ##
1169: ##
1170: my @Headers;
1171: if (@$Concepts > 1) {
1172: @Headers = ("Concept\nNumber",'Concept',"Foil\nNumber",
1173: 'Foil Name','Foil Text','Correct value');
1174: } else {
1175: @Headers = ('Foil Number','FoilName','Foil Text','Correct value');
1176: }
1177: $worksheet->write_row($rows_output++,0,\@Headers,$format->{'header'});
1178: my %Foildata = %{$ORdata->{'_Foils'}};
1179: my $conceptindex = 1;
1180: my $foilindex = 1;
1181: foreach my $concept (@$Concepts) {
1182: my @FoilsInConcept = @{$concept->{'foils'}};
1183: my $firstfoil = shift(@FoilsInConcept);
1184: if (@$Concepts > 1) {
1185: $worksheet->write_row($rows_output++,0,
1186: [$conceptindex,
1187: $concept->{'name'},
1188: $foilindex++,
1189: $Foildata{$firstfoil}->{'name'},
1190: $Foildata{$firstfoil}->{'text'},
1191: $Foildata{$firstfoil}->{'value'},]);
1192: } else {
1193: $worksheet->write_row($rows_output++,0,
1194: [ $foilindex++,
1195: $Foildata{$firstfoil}->{'name'},
1196: $Foildata{$firstfoil}->{'text'},
1197: $Foildata{$firstfoil}->{'value'},]);
1198: }
1199: foreach my $foilid (@FoilsInConcept) {
1200: if (@$Concepts > 1) {
1201: $worksheet->write_row($rows_output++,0,
1202: ['',
1203: '',
1204: $foilindex,
1205: $Foildata{$foilid}->{'name'},
1206: $Foildata{$foilid}->{'text'},
1207: $Foildata{$foilid}->{'value'},]);
1208: } else {
1209: $worksheet->write_row($rows_output++,0,
1210: [$foilindex,
1211: $Foildata{$foilid}->{'name'},
1212: $Foildata{$foilid}->{'text'},
1213: $Foildata{$foilid}->{'value'},]);
1214: }
1215: } continue {
1216: $foilindex++;
1217: }
1218: } continue {
1219: $conceptindex++;
1220: }
1221: $rows_output++;
1222: $rows_output++;
1223: ##
1224: ## Option data output
1225: $worksheet->write($rows_output++,0,'Options',$format->{'header'});
1226: foreach my $string (@{$ORdata->{'_Options'}}) {
1227: $worksheet->write($rows_output++,0,$string);
1228: }
1229: return 'okay';
1230: }
1231:
1232: sub OR_build_response_data_worksheet {
1233: my ($worksheet,$format,$PerformanceData,$Foils,$ORdata)=@_;
1234: my $rows_output = 3;
1235: my $cols_output = 0;
1236: $worksheet->write($rows_output++,0,'Response Data',$format->{'h3'});
1237: $worksheet->set_column(1,1,20);
1238: $worksheet->set_column(2,2,13);
1239: my @Headers = ('identifier','time','award detail','attempt');
1240: foreach my $foil (@$Foils) {
1241: push (@Headers,$foil.' submission');
1242: push (@Headers,$foil.' grading');
1243: }
1244: $worksheet->write_row($rows_output++,0,\@Headers,$format->{'header'});
1245: #
1246: foreach my $row (@$PerformanceData) {
1247: next if (! defined($row));
1248: my ($student,$award,$grading,$submission,$time,$tries) = @$row;
1249: my @Foilgrades = split('&',$grading);
1250: my @Foilsubs = split('&',$submission);
1251: my %ResponseData;
1252: for (my $j=0;$j<=$#Foilgrades;$j++) {
1253: my ($foilid,$correct) = split('=',$Foilgrades[$j]);
1254: my (undef,$submission) = split('=',$Foilsubs[$j]);
1255: $submission = &Apache::lonnet::unescape($submission);
1256: $ResponseData{$foilid.' submission'}=$submission;
1257: $ResponseData{$foilid.' award'}=$correct;
1258: }
1259: $worksheet->write($rows_output,$cols_output++,$student);
1260: $worksheet->write($rows_output,$cols_output++,
1261: &calc_serial($time),$format->{'date'});
1262: $worksheet->write($rows_output,$cols_output++,$award);
1263: $worksheet->write($rows_output,$cols_output++,$tries);
1264: foreach my $foilid (@$Foils) {
1265: $worksheet->write($rows_output,$cols_output++,
1266: $ResponseData{$foilid.' submission'});
1267: $worksheet->write($rows_output,$cols_output++,
1268: $ResponseData{$foilid.' award'});
1269: }
1270: $rows_output++;
1271: $cols_output = 0;
1272: }
1273: return;
1274: }
1275:
1276:
1277: ##
1278: ## The following is copied from datecalc1.pl, part of the
1279: ## Spreadsheet::WriteExcel CPAN module.
1280: ##
1281: ##
1282: ######################################################################
1283: #
1284: # Demonstration of writing date/time cells to Excel spreadsheets,
1285: # using UNIX/Perl time as source of date/time.
1286: #
1287: # Copyright 2000, Andrew Benham, adsb@bigfoot.com
1288: #
1289: ######################################################################
1290: #
1291: # UNIX/Perl time is the time since the Epoch (00:00:00 GMT, 1 Jan 1970)
1292: # measured in seconds.
1293: #
1294: # An Excel file can use exactly one of two different date/time systems.
1295: # In these systems, a floating point number represents the number of days
1296: # (and fractional parts of the day) since a start point. The floating point
1297: # number is referred to as a 'serial'.
1298: # The two systems ('1900' and '1904') use different starting points:
1299: # '1900'; '1.00' is 1 Jan 1900 BUT 1900 is erroneously regarded as
1300: # a leap year - see:
1301: # http://support.microsoft.com/support/kb/articles/Q181/3/70.asp
1302: # for the excuse^H^H^H^H^H^Hreason.
1303: # '1904'; '1.00' is 2 Jan 1904.
1304: #
1305: # The '1904' system is the default for Apple Macs. Windows versions of
1306: # Excel have the option to use the '1904' system.
1307: #
1308: # Note that Visual Basic's "DateSerial" function does NOT erroneously
1309: # regard 1900 as a leap year, and thus its serials do not agree with
1310: # the 1900 serials of Excel for dates before 1 Mar 1900.
1311: #
1312: # Note that StarOffice (at least at version 5.2) does NOT erroneously
1313: # regard 1900 as a leap year, and thus its serials do not agree with
1314: # the 1900 serials of Excel for dates before 1 Mar 1900.
1315: #
1316: ######################################################################
1317: #
1318: # Calculation description
1319: # =======================
1320: #
1321: # 1900 system
1322: # -----------
1323: # Unix time is '0' at 00:00:00 GMT 1 Jan 1970, i.e. 70 years after 1 Jan 1900.
1324: # Of those 70 years, 17 (1904,08,12,16,20,24,28,32,36,40,44,48,52,56,60,64,68)
1325: # were leap years with an extra day.
1326: # Thus there were 17 + 70*365 days = 25567 days between 1 Jan 1900 and
1327: # 1 Jan 1970.
1328: # In the 1900 system, '1' is 1 Jan 1900, but as 1900 was not a leap year
1329: # 1 Jan 1900 should really be '2', so 1 Jan 1970 is '25569'.
1330: #
1331: # 1904 system
1332: # -----------
1333: # Unix time is '0' at 00:00:00 GMT 1 Jan 1970, i.e. 66 years after 1 Jan 1904.
1334: # Of those 66 years, 17 (1904,08,12,16,20,24,28,32,36,40,44,48,52,56,60,64,68)
1335: # were leap years with an extra day.
1336: # Thus there were 17 + 66*365 days = 24107 days between 1 Jan 1904 and
1337: # 1 Jan 1970.
1338: # In the 1904 system, 2 Jan 1904 being '1', 1 Jan 1970 is '24107'.
1339: #
1340: ######################################################################
1341: #
1342: # Copyright (c) 2000, Andrew Benham.
1343: # This program is free software. It may be used, redistributed and/or
1344: # modified under the same terms as Perl itself.
1345: #
1346: # Andrew Benham, adsb@bigfoot.com
1347: # London, United Kingdom
1348: # 11 Nov 2000
1349: #
1350: ######################################################################
1351:
1352: # Use 1900 date system on all platforms other than Apple Mac (for which
1353: # use 1904 date system).
1354: my $DATE_SYSTEM = ($^O eq 'MacOS') ? 1 : 0;
1355:
1356: #-----------------------------------------------------------
1357: # calc_serial()
1358: #
1359: # Called with (up to) 2 parameters.
1360: # 1. Unix timestamp. If omitted, uses current time.
1361: # 2. GMT flag. Set to '1' to return serial in GMT.
1362: # If omitted, returns serial in appropriate timezone.
1363: #
1364: # Returns date/time serial according to $DATE_SYSTEM selected
1365: #-----------------------------------------------------------
1366: sub calc_serial {
1367: my $time = (defined $_[0]) ? $_[0] : time();
1368: my $gmtflag = (defined $_[1]) ? $_[1] : 0;
1369:
1370: # Divide timestamp by number of seconds in a day.
1371: # This gives a date serial with '0' on 1 Jan 1970.
1372: my $serial = $time / 86400;
1373:
1374: # Adjust the date serial by the offset appropriate to the
1375: # currently selected system (1900/1904).
1376: if ($DATE_SYSTEM == 0) { # use 1900 system
1377: $serial += 25569;
1378: } else { # use 1904 system
1379: $serial += 24107;
1380: }
1381:
1382: unless ($gmtflag) {
1383: # Now have a 'raw' serial with the right offset. But this
1384: # gives a serial in GMT, which is false unless the timezone
1385: # is GMT. We need to adjust the serial by the appropriate
1386: # timezone offset.
1387: # Calculate the appropriate timezone offset by seeing what
1388: # the differences between localtime and gmtime for the given
1389: # time are.
1390:
1391: my @gmtime = gmtime($time);
1392: my @ltime = localtime($time);
1393:
1394: # For the first 7 elements of the two arrays, adjust the
1395: # date serial where the elements differ.
1396: for (0 .. 6) {
1397: my $diff = $ltime[$_] - $gmtime[$_];
1398: if ($diff) {
1399: $serial += _adjustment($diff,$_);
1400: }
1401: }
1402: }
1403:
1404: # Perpetuate the error that 1900 was a leap year by decrementing
1405: # the serial if we're using the 1900 system and the date is prior to
1406: # 1 Mar 1900. This has the effect of making serial value '60'
1407: # 29 Feb 1900.
1408:
1409: # This fix only has any effect if UNIX/Perl time on the platform
1410: # can represent 1900. Many can't.
1411:
1412: unless ($DATE_SYSTEM) {
1413: $serial-- if ($serial < 61); # '61' is 1 Mar 1900
1414: }
1415: return $serial;
1416: }
1417:
1418: sub _adjustment {
1419: # Based on the difference in the localtime/gmtime array elements
1420: # number, return the adjustment required to the serial.
1421:
1422: # We only look at some elements of the localtime/gmtime arrays:
1423: # seconds unlikely to be different as all known timezones
1424: # have an offset of integral multiples of 15 minutes,
1425: # but it's easy to do.
1426: # minutes will be different for timezone offsets which are
1427: # not an exact number of hours.
1428: # hours very likely to be different.
1429: # weekday will differ when localtime/gmtime difference
1430: # straddles midnight.
1431: #
1432: # Assume that difference between localtime and gmtime is less than
1433: # 5 days, then don't have to do maths for day of month, month number,
1434: # year number, etc...
1435:
1436: my ($delta,$element) = @_;
1437: my $adjust = 0;
1438:
1439: if ($element == 0) { # Seconds
1440: $adjust = $delta/86400; # 60 * 60 * 24
1441: } elsif ($element == 1) { # Minutes
1442: $adjust = $delta/1440; # 60 * 24
1443: } elsif ($element == 2) { # Hours
1444: $adjust = $delta/24; # 24
1445: } elsif ($element == 6) { # Day of week number
1446: # Catch difference straddling Sat/Sun in either direction
1447: $delta += 7 if ($delta < -4);
1448: $delta -= 7 if ($delta > 4);
1449:
1450: $adjust = $delta;
1451: }
1452: return $adjust;
1453: }
1454:
1455: sub build_foil_index {
1456: my ($ORdata) = @_;
1457: return if (! exists($ORdata->{'_Foils'}));
1458: my %Foildata = %{$ORdata->{'_Foils'}};
1459: my @Foils = sort(keys(%Foildata));
1460: my %Concepts;
1461: foreach my $foilid (@Foils) {
1462: push(@{$Concepts{$Foildata{$foilid}->{'_Concept'}}},
1463: $foilid);
1464: }
1465: undef(@Foils);
1466: # Having gathered the concept information in a hash, we now translate it
1467: # into an array because we need to be consistent about order.
1468: # Also put the foils in order, too.
1469: my $sortfunction = sub {
1470: my %Numbers = (one => 1,
1471: two => 2,
1472: three => 3,
1473: four => 4,
1474: five => 5,
1475: six => 6,
1476: seven => 7,
1477: eight => 8,
1478: nine => 9,
1479: ten => 10,);
1480: my $a1 = lc($a);
1481: my $b1 = lc($b);
1482: if (exists($Numbers{$a1})) {
1483: $a1 = $Numbers{$a1};
1484: }
1485: if (exists($Numbers{$b1})) {
1486: $b1 = $Numbers{$b1};
1487: }
1488: if (($a1 =~/^\d+$/) && ($b1 =~/^\d+$/)) {
1489: return $a1 <=> $b1;
1490: } else {
1491: return $a1 cmp $b1;
1492: }
1493: };
1494: my @Concepts;
1495: foreach my $concept (sort $sortfunction (keys(%Concepts))) {
1496: if (! defined($Concepts{$concept})) {
1497: $Concepts{$concept}=[];
1498: # next;
1499: }
1500: push(@Concepts,{ name => $concept,
1501: foils => [@{$Concepts{$concept}}]});
1502: push(@Foils,(@{$Concepts{$concept}}));
1503: }
1504: #
1505: # Build up the table of row labels.
1506: my $table = '<table border="1" >'."\n";
1507: if (@Concepts > 1) {
1508: $table .= '<tr>'.
1509: '<th>'.&mt('Concept Number').'</th>'.
1510: '<th>'.&mt('Concept').'</th>'.
1511: '<th>'.&mt('Foil Number').'</th>'.
1512: '<th>'.&mt('Foil Name').'</th>'.
1513: '<th>'.&mt('Foil Text').'</th>'.
1514: '<th>'.&mt('Correct Value').'</th>'.
1515: "</tr>\n";
1516: } else {
1517: $table .= '<tr>'.
1518: '<th>'.&mt('Foil Number').'</th>'.
1519: '<th>'.&mt('Foil Name').'</th>'.
1520: '<th>'.&mt('Foil Text').'</th>'.
1521: '<th>'.&mt('Correct Value').'</th>'.
1522: "</tr>\n";
1523: }
1524: my $conceptindex = 1;
1525: my $foilindex = 1;
1526: foreach my $concept (@Concepts) {
1527: my @FoilsInConcept = @{$concept->{'foils'}};
1528: my $firstfoil = shift(@FoilsInConcept);
1529: if (@Concepts > 1) {
1530: $table .= '<tr>'.
1531: '<td>'.$conceptindex.'</td>'.
1532: '<td>'.&HTML::Entities::encode($concept->{'name'}).'</td>'.
1533: '<td>'.$foilindex++.'</td>'.
1534: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'name'}).'</td>'.
1535: '<td>'.$Foildata{$firstfoil}->{'text'}.'</td>'.
1536: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'value'}).'</td>'.
1537: "</tr>\n";
1538: } else {
1539: $table .= '<tr>'.
1540: '<td>'.$foilindex++.'</td>'.
1541: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'name'}).'</td>'.
1542: '<td>'.$Foildata{$firstfoil}->{'text'}.'</td>'.
1543: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'value'}).'</td>'.
1544: "</tr>\n";
1545: }
1546: foreach my $foilid (@FoilsInConcept) {
1547: if (@Concepts > 1) {
1548: $table .= '<tr>'.
1549: '<td></td>'.
1550: '<td></td>'.
1551: '<td>'.$foilindex.'</td>'.
1552: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'name'}).'</td>'.
1553: '<td>'.$Foildata{$foilid}->{'text'}.'</td>'.
1554: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'value'}).'</td>'.
1555: "</tr>\n";
1556: } else {
1557: $table .= '<tr>'.
1558: '<td>'.$foilindex.'</td>'.
1559: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'name'}).'</td>'.
1560: '<td>'.$Foildata{$foilid}->{'text'}.'</td>'.
1561: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'value'}).'</td>'.
1562: "</tr>\n";
1563: }
1564: } continue {
1565: $foilindex++;
1566: }
1567: } continue {
1568: $conceptindex++;
1569: }
1570: $table .= "</table>\n";
1571: #
1572: # Build option index with color stuff
1573: return ($table,\@Foils,\@Concepts);
1574: }
1575:
1576: sub build_option_index {
1577: my ($ORdata)= @_;
1578: my $table = "<table>\n";
1579: my $optionindex = 0;
1580: my @Rows;
1581: foreach my $option (&mt('correct option chosen'),@{$ORdata->{'_Options'}}) {
1582: push (@Rows,
1583: '<tr>'.
1584: '<td bgcolor="'.$plotcolors->[$optionindex++].'">'.
1585: (' 'x4).'</td>'.
1586: '<td>'.&HTML::Entities::encode($option).'</td>'.
1587: "</tr>\n");
1588: }
1589: shift(@Rows); # Throw away 'correct option chosen' color
1590: $table .= join('',reverse(@Rows));
1591: $table .= "</table>\n";
1592: }
1593:
1594: #########################################################
1595: #########################################################
1596: ##
1597: ## Generic Interface Routines
1598: ##
1599: #########################################################
1600: #########################################################
1601: sub CreateInterface {
1602: ##
1603: ## Environment variable initialization
1604: if (! exists$ENV{'form.AnalyzeOver'}) {
1605: $ENV{'form.AnalyzeOver'} = 'Tries';
1606: }
1607: ##
1608: ## Build the menu
1609: my $Str = '';
1610: $Str .= '<table cellspacing="5">'."\n";
1611: $Str .= '<tr>';
1612: $Str .= '<td align="center"><b>'.&mt('Sections').'</b></td>';
1613: $Str .= '<td align="center"><b>'.&mt('Enrollment Status').'</b></td>';
1614: # $Str .= '<td align="center"><b>'.&mt('Sequences and Folders').'</b></td>';
1615: $Str .= '<td align="center"> </td>';
1616: $Str .= '</tr>'."\n";
1617: ##
1618: ##
1619: $Str .= '<tr><td align="center">'."\n";
1620: $Str .= &Apache::lonstatistics::SectionSelect('Section','multiple',5);
1621: $Str .= '</td>';
1622: #
1623: $Str .= '<td align="center">';
1624: $Str .= &Apache::lonhtmlcommon::StatusOptions(undef,undef,5);
1625: $Str .= '</td>';
1626: #
1627: # $Str .= '<td align="center">';
1628: my $only_seq_with_assessments = sub {
1629: my $s=shift;
1630: if ($s->{'num_assess'} < 1) {
1631: return 0;
1632: } else {
1633: return 1;
1634: }
1635: };
1636: &Apache::lonstatistics::MapSelect('Maps','multiple,all',5,
1637: $only_seq_with_assessments);
1638: ##
1639: ##
1640: $Str .= '<td>';
1641: { # These braces are here to organize the code, not scope it.
1642: {
1643: $Str .= '<nobr>'.&mt('Analyze Over ');
1644: $Str .= &Apache::loncommon::help_open_topic
1645: ('Analysis_Analyze_Over');
1646: $Str .='<select name="AnalyzeOver" >';
1647: $Str .= '<option value="Tries" ';
1648: if (! exists($ENV{'form.AnalyzeOver'}) ||
1649: $ENV{'form.AnalyzeOver'} eq 'Tries'){
1650: # Default to Tries
1651: $Str .= ' selected ';
1652: }
1653: $Str .= '>'.&mt('Tries').'</option>';
1654: $Str .= '<option value="Time" ';
1655: $Str .= ' selected ' if ($ENV{'form.AnalyzeOver'} eq 'Time');
1656: $Str .= '>'.&mt('Time').'</option>';
1657: $Str .= '</select>';
1658: $Str .= '</nobr><br />';
1659: }
1660: {
1661: $Str .= '<nobr>'.&mt('Analyze as ');
1662: $Str .= &Apache::loncommon::help_open_topic
1663: ('Analysis_Analyze_as');
1664: $Str .='<select name="AnalyzeAs" >';
1665: $Str .= '<option value="Concepts" ';
1666: if (! exists($ENV{'form.AnalyzeAs'}) ||
1667: $ENV{'form.AnalyzeAs'} eq 'Concepts'){
1668: # Default to Concepts
1669: $Str .= ' selected ';
1670: }
1671: $Str .= '>'.&mt('Concepts').'</option>';
1672: $Str .= '<option value="Foils" ';
1673: $Str .= ' selected ' if ($ENV{'form.AnalyzeAs'} eq 'Foils');
1674: $Str .= '>'.&mt('Foils').'</option>';
1675: $Str .= '</select></nobr><br />';
1676: }
1677: {
1678: $Str .= '<br /><nobr>'.&mt('Number of Plots:');
1679: $Str .= &Apache::loncommon::help_open_topic
1680: ('Analysis_num_plots');
1681: $Str .= '<select name="NumPlots">';
1682: if (! exists($ENV{'form.NumPlots'})
1683: || $ENV{'form.NumPlots'} < 1
1684: || $ENV{'form.NumPlots'} > 20) {
1685: $ENV{'form.NumPlots'} = 5;
1686: }
1687: foreach my $i (1,2,3,4,5,6,7,8,10,15,20) {
1688: $Str .= '<option value="'.$i.'" ';
1689: if ($ENV{'form.NumPlots'} == $i) { $Str.=' selected '; }
1690: $Str .= '>'.$i.'</option>';
1691: }
1692: $Str .= '</select></nobr>';
1693: }
1694: }
1695: $Str .= '</td>';
1696: ##
1697: ##
1698: $Str .= '</tr>'."\n";
1699: $Str .= '</table>'."\n";
1700: return $Str;
1701: }
1702:
1703: #########################################################
1704: #########################################################
1705: ##
1706: ## Misc Option Response functions
1707: ##
1708: #########################################################
1709: #########################################################
1710: sub get_time_from_row {
1711: my ($row) = @_;
1712: if (ref($row)) {
1713: return $row->[&Apache::loncoursedata::RD_timestamp()];
1714: }
1715: return undef;
1716: }
1717:
1718: sub get_tries_from_row {
1719: my ($row) = @_;
1720: if (ref($row)) {
1721: return $row->[&Apache::loncoursedata::RD_tries()];
1722: }
1723: return undef;
1724: }
1725:
1726: sub hashify_attempt {
1727: my ($row) = @_;
1728: my %attempt;
1729: $attempt{'tries'} = $row->[&Apache::loncoursedata::RD_tries()];
1730: $attempt{'submission'} = $row->[&Apache::loncoursedata::RD_submission()];
1731: $attempt{'award'} = $row->[&Apache::loncoursedata::RD_awarddetail()];
1732: $attempt{'timestamp'} = $row->[&Apache::loncoursedata::RD_timestamp()];
1733: return %attempt;
1734: }
1735:
1736: sub Process_OR_Row {
1737: my ($row) = @_;
1738: my %RowData;
1739: my $student_id = $row->[&Apache::loncoursedata::RD_student_id()];
1740: my $award = $row->[&Apache::loncoursedata::RD_awarddetail()];
1741: my $grading = $row->[&Apache::loncoursedata::RD_response_eval()];
1742: my $submission = $row->[&Apache::loncoursedata::RD_submission()];
1743: my $time = $row->[&Apache::loncoursedata::RD_timestamp()];
1744: my $tries = $row->[&Apache::loncoursedata::RD_tries()];
1745: return undef if ($award eq 'MISSING_ANSWER');
1746: if ($award =~ /(APPROX_ANS|EXACT_ANS)/) {
1747: $RowData{'_correct'} = 1;
1748: }
1749: $RowData{'_total'} = 1;
1750: my @Foilgrades = split('&',$grading);
1751: my @Foilsubs = split('&',$submission);
1752: for (my $j=0;$j<=$#Foilgrades;$j++) {
1753: my ($foilid,$correct) = split('=',$Foilgrades[$j]);
1754: $foilid = &Apache::lonnet::unescape($foilid);
1755: my (undef,$submission) = split('=',$Foilsubs[$j]);
1756: if ($correct) {
1757: $RowData{$foilid}->{'_correct'}++;
1758: } else {
1759: $submission = &Apache::lonnet::unescape($submission);
1760: $RowData{$foilid}->{$submission}++;
1761: }
1762: $RowData{$foilid}->{'_total'}++;
1763: }
1764: return %RowData;
1765: }
1766:
1767:
1768: sub analyze_problem_as_student {
1769: my ($resource,$sname,$sdom,$partid,$respid) = @_;
1770: my $url = $resource->{'src'};
1771: my $symb = $resource->{'symb'};
1772: my $courseid = $ENV{'request.course.id'};
1773: my $Answ=&Apache::lonnet::ssi($url,('grade_target' => 'analyze',
1774: 'grade_domain' => $sdom,
1775: 'grade_username' => $sname,
1776: 'grade_symb' => $symb,
1777: 'grade_courseid' => $courseid));
1778: (my $garbage,$Answ)=split(/_HASH_REF__/,$Answ,2);
1779: my %Answer=&Apache::lonnet::str2hash($Answ);
1780: my $key = $partid.'.'.$respid.'.answer';
1781: my $student_answer = $Answer{$key}->[0];
1782: if (! defined($student_answer)) {
1783: $student_answer = $Answer{$key}->[1];
1784: }
1785: return ($student_answer);
1786: }
1787:
1788: ##
1789: ## get problem data and put it into a useful data structure.
1790: ## note: we must force each foil and option to not begin or end with
1791: ## spaces as they are stored without such data.
1792: ##
1793: sub get_problem_data {
1794: my ($url) = @_;
1795: my $Answ=&Apache::lonnet::ssi($url,('grade_target' => 'analyze'));
1796: (my $garbage,$Answ)=split(/_HASH_REF__/,$Answ,2);
1797: my %Answer;
1798: %Answer=&Apache::lonnet::str2hash($Answ);
1799: my %Partdata;
1800: foreach my $part (@{$Answer{'parts'}}) {
1801: while (my($key,$value) = each(%Answer)) {
1802: #
1803: # Logging code:
1804: if (0) {
1805: &Apache::lonnet::logthis($part.' got key "'.$key.'"');
1806: if (ref($value) eq 'ARRAY') {
1807: &Apache::lonnet::logthis(' '.join(',',@$value));
1808: } else {
1809: &Apache::lonnet::logthis(' '.$value);
1810: }
1811: }
1812: # End of logging code
1813: next if ($key !~ /^$part/);
1814: $key =~ s/^$part\.//;
1815: if (ref($value) eq 'ARRAY') {
1816: if ($key eq 'options') {
1817: $Partdata{$part}->{'_Options'}=$value;
1818: } elsif ($key eq 'concepts') {
1819: $Partdata{$part}->{'_Concepts'}=$value;
1820: } elsif ($key =~ /^concept\.(.*)$/) {
1821: my $concept = $1;
1822: foreach my $foil (@$value) {
1823: $Partdata{$part}->{'_Foils'}->{$foil}->{'_Concept'}=
1824: $concept;
1825: }
1826: } elsif ($key =~ /^(incorrect|answer|ans_low|ans_high)$/) {
1827: $Partdata{$part}->{$key}=$value;
1828: }
1829: } else {
1830: if ($key=~ /^foil\.text\.(.*)$/) {
1831: my $foil = $1;
1832: $Partdata{$part}->{'_Foils'}->{$foil}->{'name'}=$foil;
1833: $value =~ s/(\s*$|^\s*)//g;
1834: $Partdata{$part}->{'_Foils'}->{$foil}->{'text'}=$value;
1835: } elsif ($key =~ /^foil\.value\.(.*)$/) {
1836: my $foil = $1;
1837: $Partdata{$part}->{'_Foils'}->{$foil}->{'value'}=$value;
1838: }
1839: }
1840: }
1841: }
1842: return %Partdata;
1843: }
1844:
1845: 1;
1846:
1847: __END__
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