1: # The LearningOnline Network with CAPA
2: #
3: # $Id: lonproblemanalysis.pm,v 1.68 2004/02/16 20:50:03 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: &NumericalResponseAnalysis($r,$current_problem,
163: $ProblemData,\@Students);
164: } else {
165: $r->print('<h2>This analysis is not supported</h2>');
166: }
167: }
168: $r->print('<hr />');
169: } else {
170: $r->print('<input type="submit" name="ProblemAnalysis" value="'.
171: &mt('Analyze Problem').'" />');
172: $r->print(' 'x5);
173: $r->print('<h3>'.&mt('Please select a problem to analyze').'</h3>');
174: $r->print(&Apache::lonstathelpers::ProblemSelector
175: ($problem_types));
176: }
177: }
178:
179: #########################################################
180: #########################################################
181: ##
182: ## Numerical Response Routines
183: ##
184: #########################################################
185: #########################################################
186: sub NumericalResponseAnalysis {
187: my ($r,$problem,$ProblemData,$Students) = @_;
188: $r->print('<h2>This analysis is not yet supported</h2>');
189: my ($resource,$respid) = ($problem->{'resource'},
190: $problem->{'respid'});
191: my $analysis_html;
192: my $PerformanceData =
193: &Apache::loncoursedata::get_response_data
194: ($Students,$resource->{'symb'},$respid);
195: if (! defined($PerformanceData) ||
196: ref($PerformanceData) ne 'ARRAY' ) {
197: $analysis_html = '<h2>'.
198: &mt('There is no submission data for this resource').
199: '</h2>';
200: $r->print($analysis_html);
201: return;
202: }
203: my ($max,$min) = &GetStudentAnswers($r,$problem,$Students);
204: $r->print('Maximum = '.$max.' Minimum = '.$min);
205: my $max_students = 0;
206: my %Data;
207: foreach my $student (@$Students) {
208: my $answer = $student->{'answer'};
209: $Data{$answer}++;
210: if ($max_students < $Data{$answer}) {
211: $max_students = $Data{$answer};
212: }
213: }
214: foreach (5,10,20,25,50,75,100,150,200,250,500,1000,1500,2000,2500,5000) {
215: if ($max_students < $_) {
216: $max_students = $_;
217: last;
218: }
219: }
220: my @Labels = sort {$a <=> $b } keys(%Data);
221: $r->print('number of labels = '.scalar(@Labels));
222: my @PlotData = @Data{@Labels};
223: $r->print('number of PlotData = '.scalar(@PlotData));
224: my $graph =
225: &Apache::loncommon::DrawXYGraph('Correct Answer Distribution',
226: 'Correct Answer',
227: 'Number of students',
228: $max_students,
229: undef,
230: \@Labels,
231: [\@PlotData],
232: (xskip=>10));
233: $r->print($graph);
234: return;
235: }
236:
237: sub GetStudentAnswers {
238: my ($r,$problem,$Students) = @_;
239: my %Answers;
240: my ($resource,$partid,$respid) = ($problem->{'resource'},
241: $problem->{'part'},
242: $problem->{'respid'});
243: # Open progress window
244: my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin
245: ($r,'Student Answer Compilation Status',
246: 'Student Answer Compilation Progress', scalar(@$Students));
247: $r->print("<table>\n");
248: $r->rflush();
249: my ($min,$max);
250: foreach my $student (@$Students) {
251: my $sname = $student->{'username'};
252: my $sdom = $student->{'domain'};
253: my $answer = analyze_problem_as_student($resource,
254: $sname,$sdom,
255: $partid,$respid);
256: if (! defined($min) || $min > $answer) {
257: $min = $answer;
258: }
259: if (! defined($max) || $max < $answer) {
260: $max = $answer;
261: }
262: # $r->print('<tr>'.
263: # '<td>'.$sname.'</td>'.
264: # '<td>'.$sdom.'</td>'.
265: # '<td>'.$answer.'</td>'.
266: # '</tr>'."\n");
267: &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
268: &mt('last student'));
269: $student->{'answer'} = $answer;
270: }
271: $r->print("</table>\n");
272: $r->rflush();
273: &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
274: # close progress window
275: return ($max,$min);
276: }
277:
278: sub build_student_data_worksheet {
279: my ($workbook,$format) = @_;
280: my $rows_output = 3;
281: my $cols_output = 0;
282: my $worksheet = $workbook->addworksheet('Student Data');
283: $worksheet->write($rows_output++,0,'Student Data',$format->{'h3'});
284: my @Headers = ('full name','username','domain','section',
285: "student\nnumber",'identifier');
286: $worksheet->write_row($rows_output++,0,\@Headers,$format->{'header'});
287: my @Students = @Apache::lonstatistics::Students;
288: my $studentrows = &Apache::loncoursedata::get_student_data(\@Students);
289: my %ids;
290: foreach my $row (@$studentrows) {
291: my ($mysqlid,$student) = @$row;
292: $ids{$student}=$mysqlid;
293: }
294: foreach my $student (@Students) {
295: my $name_domain = $student->{'username'}.':'.$student->{'domain'};
296: $worksheet->write_row($rows_output++,0,
297: [$student->{'fullname'},
298: $student->{'username'},$student->{'domain'},
299: $student->{'section'},$student->{'id'},
300: $ids{$name_domain}]);
301: }
302: return $worksheet;
303: }
304:
305: #########################################################
306: #########################################################
307: ##
308: ## Radio Response Routines
309: ##
310: #########################################################
311: #########################################################
312: sub RadioResponseAnalysis {
313: my ($r,$problem,$ProblemData,$Students) = @_;
314: my ($resource,$respid) = ($problem->{'resource'},
315: $problem->{'respid'});
316: my $analysis_html;
317: my $PerformanceData =
318: &Apache::loncoursedata::get_response_data
319: ($Students,$resource->{'symb'},$respid);
320: if (! defined($PerformanceData) ||
321: ref($PerformanceData) ne 'ARRAY' ) {
322: $analysis_html = '<h2>'.
323: &mt('There is no submission data for this resource').
324: '</h2>';
325: $r->print($analysis_html);
326: return;
327: }
328: if (exists($ENV{'form.ExcelOutput'})) {
329: $analysis_html .= &RR_Excel_output($r,$problem->{'resource'},
330: $PerformanceData,$ProblemData);
331: } elsif ($ENV{'form.AnalyzeOver'} eq 'Tries') {
332: $analysis_html .= &RR_Tries_Analysis($r,$problem->{'resource'},
333: $PerformanceData,$ProblemData);
334: } elsif ($ENV{'form.AnalyzeOver'} eq 'Time') {
335: $analysis_html .= &RR_Time_Analysis($r,$problem->{'resource'},
336: $PerformanceData,$ProblemData);
337: } else {
338: $analysis_html .= '<h2>'.
339: &mt('The analysis you have selected is not supported at this time').
340: '</h2>';
341: }
342: $r->print($analysis_html);
343: }
344:
345: sub RR_Excel_output {
346: my ($r,$PerformanceData,$ProblemData) = @_;
347: return '<h1>No!</h1>';
348: }
349:
350: sub RR_Tries_Analysis {
351: my ($r,$resource,$PerformanceData,$ProblemData) = @_;
352: my $analysis_html;
353: my $mintries = 1;
354: my $maxtries = $ENV{'form.NumPlots'};
355: my ($table,$Foils,$Concepts) = &build_foil_index($ProblemData);
356: if ((! defined($Concepts)) || ((@$Concepts < 2) &&
357: ($ENV{'form.AnalyzeAs'} ne 'Foils'))) {
358: $table = '<h3>'.
359: &mt('Not enough data for concept analysis. '.
360: 'Performing Foil Analysis').
361: '</h3>'.$table;
362: $ENV{'form.AnalyzeAs'} = 'Foils';
363: }
364: $analysis_html .= $table;
365: my @TryData = &RR_tries_data_analysis($r,$PerformanceData);
366: # if ($ENV{'form.AnalyzeAs'} eq 'Foils') {
367: $analysis_html .= &RR_Tries_Foil_Analysis($mintries,$maxtries,$Foils,
368: \@TryData,$ProblemData);
369: # } else {
370: # $analysis_html = &RR_Tries_Concept_Analysis($mintries,$maxtries,
371: # $Concepts,
372: # \@TryData,
373: # $ProblemData);
374: # }
375: return $analysis_html;
376: }
377:
378: sub RR_tries_data_analysis {
379: my ($r,$Attempt_data) = @_;
380: my @TryData;
381: foreach my $attempt (@$Attempt_data) {
382: my %Attempt = &hashify_attempt($attempt);
383: my ($answer,undef) = split('=',$Attempt{'submission'});
384: $TryData[$Attempt{'tries'}]->{$answer}++;
385: }
386: return @TryData;
387: }
388:
389: sub RR_Time_Analysis {
390: my ($r,$PerformanceData,$ProblemData) = @_;
391: my $html;
392: return $html;
393: }
394:
395: sub RR_Tries_Foil_Analysis {
396: my ($min,$max,$Foils,$TryData,$ProblemData) = @_;
397: my $html;
398: #
399: # Compute the data neccessary to make the plots
400: for (my $try=$min;$try<=$max;$try++) {
401: my @PlotData_Correct;
402: my @PlotData_Incorrect;
403: next if ($try > scalar(@{$TryData}));
404: next if (! defined($TryData->[$try]));
405: my %DataSet = %{$TryData->[$try]};
406: my $total = 0;
407: foreach my $foilid (@$Foils) {
408: $total += $DataSet{$foilid};
409: }
410: foreach my $foilid (@$Foils) {
411: if ($total == 0) {
412: push (@PlotData_Correct,0);
413: push (@PlotData_Incorrect,0);
414: } else {
415: if ($ProblemData->{'_Foils'}->{$foilid}->{'value'} eq 'true') {
416: push (@PlotData_Correct,
417: int(100*$DataSet{$foilid}/$total));
418: push (@PlotData_Incorrect,0);
419: } else {
420: push (@PlotData_Correct,0);
421: push (@PlotData_Incorrect,
422: int(100*$DataSet{$foilid}/$total));
423: }
424: }
425: }
426: my $title='Attempt '.$try;
427: my $xlabel = $total.' Submissions';
428: $html.= &Apache::loncommon::DrawBarGraph($title,
429: $xlabel,
430: 'Percent Choosing',
431: 100,
432: ['#33ff00','#ff3300'],
433: undef,
434: \@PlotData_Correct,
435: \@PlotData_Incorrect);
436: }
437: return $html;
438: }
439:
440: sub RR_Tries_Concept_Analysis {
441: my ($min,$max,$Concepts,$ResponseData,$ProblemData) = @_;
442: my $html;
443: return $html;
444: }
445:
446: sub RR_Time_Foil_Analysis {
447: my ($min,$max,$Foils,$ResponseData,$ProblemData) = @_;
448: my $html;
449: return $html;
450: }
451:
452: sub RR_Time_Concept_Analysis {
453: my ($min,$max,$Concepts,$ResponseData,$ProblemData) = @_;
454: my $html;
455: return $html;
456: }
457:
458:
459: sub get_Radio_problem_data {
460: my ($url) = @_;
461: my $Answ=&Apache::lonnet::ssi($url,('grade_target' => 'analyze'));
462: (my $garbage,$Answ)=split('_HASH_REF__',$Answ,2);
463: my %Answer = &Apache::lonnet::str2hash($Answ);
464: my %Partdata;
465: foreach my $part (@{$Answer{'parts'}}) {
466: while (my($key,$value) = each(%Answer)) {
467: # if (ref($value) eq 'ARRAY') {
468: # &Apache::lonnet::logthis('is ref part:'.$part.' '.$key.'='.join(',',@$value));
469: # } else {
470: # &Apache::lonnet::logthis('notref part:'.$part.' '.$key.'='.$value);
471: # }
472: next if ($key !~ /^$part/);
473: $key =~ s/^$part\.//;
474: if ($key eq 'foils') {
475: $Partdata{$part}->{'_Foils'}=$value;
476: } elsif ($key eq 'options') {
477: $Partdata{$part}->{'_Options'}=$value;
478: } elsif ($key eq 'shown') {
479: $Partdata{$part}->{'_Shown'}=$value;
480: } elsif ($key =~ /^foil.value.(.*)$/) {
481: $Partdata{$part}->{$1}->{'value'}=$value;
482: } elsif ($key =~ /^foil.text.(.*)$/) {
483: $Partdata{$part}->{$1}->{'text'}=$value;
484: }
485: }
486: }
487: return %Partdata;
488: }
489:
490: #########################################################
491: #########################################################
492: ##
493: ## Option Response Routines
494: ##
495: #########################################################
496: #########################################################
497: sub OptionResponseAnalysis {
498: my ($r,$problem,$ProblemData,$Students) = @_;
499: my ($resource,$respid) = ($problem->{'resource'},
500: $problem->{'respid'});
501: # Note: part data is not needed.
502: my $PerformanceData =
503: &Apache::loncoursedata::get_response_data
504: ($Students,$resource->{'symb'},$respid);
505: if (! defined($PerformanceData) ||
506: ref($PerformanceData) ne 'ARRAY' ) {
507: $r->print('<h2>'.
508: &mt('There is no student data for this problem.').
509: '</h2>');
510: } else {
511: $r->rflush();
512: if (exists($ENV{'form.ExcelOutput'})) {
513: my $result = &OR_excel_sheet($r,$resource,
514: $PerformanceData,
515: $ProblemData);
516: $r->print($result);
517: $r->rflush();
518: } else {
519: if ($ENV{'form.AnalyzeOver'} eq 'Tries') {
520: my $analysis_html = &OR_tries_analysis($r,
521: $PerformanceData,
522: $ProblemData);
523: $r->print($analysis_html);
524: $r->rflush();
525: } elsif ($ENV{'form.AnalyzeOver'} eq 'Time') {
526: my $analysis_html = &OR_time_analysis($PerformanceData,
527: $ProblemData);
528: $r->print($analysis_html);
529: $r->rflush();
530: } else {
531: $r->print('<h2>'.
532: &mt('The analysis you have selected is '.
533: 'not supported at this time').
534: '</h2>');
535: }
536: }
537: }
538: }
539:
540: #########################################################
541: #
542: # Option Response: Tries Analysis
543: #
544: #########################################################
545: sub OR_tries_analysis {
546: my ($r,$PerformanceData,$ORdata) = @_;
547: my $mintries = 1;
548: my $maxtries = $ENV{'form.NumPlots'};
549: my ($table,$Foils,$Concepts) = &build_foil_index($ORdata);
550: if ((@$Concepts < 2) && ($ENV{'form.AnalyzeAs'} ne 'Foils')) {
551: $table = '<h3>'.
552: &mt('Not enough data for concept analysis. '.
553: 'Performing Foil Analysis').
554: '</h3>'.$table;
555: $ENV{'form.AnalyzeAs'} = 'Foils';
556: }
557: my %ResponseData = &OR_analyze_by_tries($r,$PerformanceData,
558: $mintries,$maxtries);
559: my $analysis = '';
560: if ($ENV{'form.AnalyzeAs'} eq 'Foils') {
561: $analysis = &OR_Tries_Foil_Analysis($mintries,$maxtries,$Foils,
562: \%ResponseData,$ORdata);
563: } else {
564: $analysis = &OR_Tries_Concept_Analysis($mintries,$maxtries,
565: $Concepts,\%ResponseData,$ORdata);
566: }
567: $table .= $analysis;
568: return $table;
569: }
570:
571: sub OR_Tries_Foil_Analysis {
572: my ($mintries,$maxtries,$Foils,$respdat,$ORdata) = @_;
573: my %ResponseData = %$respdat;
574: #
575: # Compute the data neccessary to make the plots
576: my @PlotData;
577: foreach my $foilid (@$Foils) {
578: for (my $i=$mintries;$i<=$maxtries;$i++) {
579: if ($ResponseData{$foilid}->[$i]->{'_total'} == 0) {
580: push(@{$PlotData[$i]->{'_correct'}},0);
581: } else {
582: push(@{$PlotData[$i]->{'_correct'}},
583: 100*$ResponseData{$foilid}->[$i]->{'_correct'}/
584: $ResponseData{$foilid}->[$i]->{'_total'});
585: }
586: foreach my $option (@{$ORdata->{'_Options'}}) {
587: push(@{$PlotData[$i]->{'_total'}},
588: $ResponseData{$foilid}->[$i]->{'_total'});
589: if ($ResponseData{$foilid}->[$i]->{'_total'} == 0) {
590: push (@{$PlotData[$i]->{$option}},0);
591: } else {
592: if ($ResponseData{$foilid}->[$i]->{'_total'} ==
593: $ResponseData{$foilid}->[$i]->{'_correct'}) {
594: push(@{$PlotData[$i]->{$option}},0);
595: } else {
596: push (@{$PlotData[$i]->{$option}},
597: 100 * $ResponseData{$foilid}->[$i]->{$option} /
598: ($ResponseData{$foilid}->[$i]->{'_total'} -
599: $ResponseData{$foilid}->[$i]->{'_correct'}));
600: }
601: }
602: }
603: }
604: }
605: #
606: # Build a table for the plots
607: my $analysis_html = "<table>\n";
608: my $foilkey = &build_option_index($ORdata);
609: for (my $i=$mintries;$i<=$maxtries;$i++) {
610: my $count = $ResponseData{'_total'}->[$i];
611: if ($count == 0) {
612: $count = 'no submissions';
613: } elsif ($count == 1) {
614: $count = '1 submission';
615: } else {
616: $count = $count.' submissions';
617: }
618: my $title = 'Attempt '.$i.', '.$count;
619: my @Datasets;
620: foreach my $option ('_correct',@{$ORdata->{'_Options'}}) {
621: next if (! exists($PlotData[$i]->{$option}));
622: push(@Datasets,$PlotData[$i]->{$option});
623: }
624: my $correctgraph = &Apache::loncommon::DrawBarGraph
625: ($title,'Foil Number','Percent Correct',
626: 100,$plotcolors,undef,$Datasets[0]);
627: $analysis_html.= '<tr><td>'.$correctgraph.'</td>';
628: ##
629: ##
630: next if (! defined($Datasets[0]));
631: for (my $i=0; $i< scalar(@{$Datasets[0]});$i++) {
632: $Datasets[0]->[$i]=0;
633: }
634: $count = $ResponseData{'_total'}->[$i]-$ResponseData{'_correct'}->[$i];
635: if ($count == 0) {
636: $count = 'no submissions';
637: } elsif ($count == 1) {
638: $count = '1 submission';
639: } else {
640: $count = $count.' submissions';
641: }
642: $title = 'Attempt '.$i.', '.$count;
643: my $incorrectgraph = &Apache::loncommon::DrawBarGraph
644: ($title,'Foil Number','% Option Chosen Incorrectly',
645: 100,$plotcolors,undef,@Datasets);
646: $analysis_html.= '<td>'.$incorrectgraph.'</td>';
647: $analysis_html.= '<td>'.$foilkey."<td></tr>\n";
648: }
649: $analysis_html .= "</table>\n";
650: return $analysis_html;
651: }
652:
653: sub OR_Tries_Concept_Analysis {
654: my ($mintries,$maxtries,$Concepts,$respdat,$ORdata) = @_;
655: my %ResponseData = %$respdat;
656: my $analysis_html = "<table>\n";
657: #
658: # Compute the data neccessary to make the plots
659: my @PlotData;
660: # Concept analysis
661: #
662: # Note: we do not bother with characterizing the students incorrect
663: # answers at the concept level because an incorrect answer for one foil
664: # may be a correct answer for another foil.
665: my %ConceptData;
666: foreach my $concept (@{$Concepts}) {
667: for (my $i=$mintries;$i<=$maxtries;$i++) {
668: #
669: # Gather the per-attempt data
670: my $cdata = $ConceptData{$concept}->[$i];
671: foreach my $foilid (@{$concept->{'foils'}}) {
672: $cdata->{'_correct'} +=
673: $ResponseData{$foilid}->[$i]->{'_correct'};
674: $cdata->{'_total'} +=
675: $ResponseData{$foilid}->[$i]->{'_total'};
676: }
677: push (@{$PlotData[$i]->{'_total'}},$cdata->{'_total'});
678: if ($cdata->{'_total'} == 0) {
679: push (@{$PlotData[$i]->{'_correct'}},0);
680: } else {
681: push (@{$PlotData[$i]->{'_correct'}},
682: 100*$cdata->{'_correct'}/$cdata->{'_total'});
683: }
684: }
685: }
686: # Build a table for the plots
687: for (my $i=$mintries;$i<=$maxtries;$i++) {
688: my $minstu = $PlotData[$i]->{'_total'}->[0];
689: my $maxstu = $PlotData[$i]->{'_total'}->[0];
690: foreach my $count (@{$PlotData[$i]->{'_total'}}) {
691: if ($minstu > $count) {
692: $minstu = $count;
693: }
694: if ($maxstu < $count) {
695: $maxstu = $count;
696: }
697: }
698: $maxstu = 0 if (! defined($maxstu));
699: $minstu = 0 if (! defined($minstu));
700: my $title;
701: my $count = $ResponseData{'_total'}->[$i];
702: if ($count == 0) {
703: $count = 'no submissions';
704: } elsif ($count == 1) {
705: $count = '1 submission';
706: } else {
707: $count = $count.' submissions';
708: }
709: $title = 'Attempt '.$i.', '.$count;
710: my $graphlink = &Apache::loncommon::DrawBarGraph
711: ($title,'Concept Number','Percent Correct',
712: 100,$plotcolors,undef,$PlotData[$i]->{'_correct'});
713: $analysis_html.= '<tr><td>'.$graphlink."</td></tr>\n";
714: }
715: $analysis_html .= "</table>\n";
716: return $analysis_html;
717: }
718:
719: sub OR_analyze_by_tries {
720: my ($r,$PerformanceData,$mintries,$maxtries) = @_;
721: my %Trydata;
722: $mintries = 1 if (! defined($mintries) || $mintries < 1);
723: $maxtries = $mintries if (! defined($maxtries) || $maxtries < $mintries);
724: foreach my $row (@$PerformanceData) {
725: next if (! defined($row));
726: my $tries = &get_tries_from_row($row);
727: my %Row = &Process_OR_Row($row);
728: next if (! %Row);
729: while (my ($foilid,$href) = each(%Row)) {
730: if (! ref($href)) {
731: $Trydata{$foilid}->[$tries] += $href;
732: next;
733: }
734: while (my ($option,$value) = each(%$href)) {
735: $Trydata{$foilid}->[$tries]->{$option}+=$value;
736: }
737: }
738: }
739: return %Trydata;
740: }
741:
742: #########################################################
743: #
744: # Option Response: Time Analysis
745: #
746: #########################################################
747: sub OR_time_analysis {
748: my ($PerformanceData,$ORdata) = @_;
749: my ($table,$Foils,$Concepts) = &build_foil_index($ORdata);
750: if ((@$Concepts < 2) && ($ENV{'form.AnalyzeAs'} ne 'Foils')) {
751: $table = '<h3>'.
752: &mt('Not enough data for concept analysis. '.
753: 'Performing Foil Analysis').
754: '</h3>'.$table;
755: $ENV{'form.AnalyzeAs'} = 'Foils';
756: }
757: my $num_plots = $ENV{'form.NumPlots'};
758: my $num_data = scalar(@$PerformanceData)-1;
759: my $percent = sprintf('%2f',100/$num_plots);
760: #
761: $table .= "<table>\n";
762: for (my $i=0;$i<$num_plots;$i++) {
763: ##
764: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
765: ('startdate_'.$i);
766: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
767: ('enddate_'.$i);
768: if (! defined($starttime) || ! defined($endtime)) {
769: my $sec_in_day = 86400;
770: my $last_sub_time = &get_time_from_row($PerformanceData->[-1]);
771: my ($sday,$smon,$syear);
772: (undef,undef,undef,$sday,$smon,$syear) =
773: localtime($last_sub_time - $sec_in_day*$i);
774: $starttime = &Time::Local::timelocal(0,0,0,$sday,$smon,$syear);
775: $endtime = $starttime + $sec_in_day;
776: if ($i == ($num_plots -1 )) {
777: $starttime = &get_time_from_row($PerformanceData->[0]);
778: }
779: }
780: my $startdateform = &Apache::lonhtmlcommon::date_setter
781: ('Statistics','startdate_'.$i,$starttime);
782: my $enddateform = &Apache::lonhtmlcommon::date_setter
783: ('Statistics','enddate_'.$i,$endtime);
784: #
785: my $begin_index;
786: my $end_index;
787: my $j;
788: while (++$j < scalar(@$PerformanceData)) {
789: last if (&get_time_from_row($PerformanceData->[$j])
790: > $starttime);
791: }
792: $begin_index = $j;
793: while (++$j < scalar(@$PerformanceData)) {
794: last if (&get_time_from_row($PerformanceData->[$j]) > $endtime);
795: }
796: $end_index = $j;
797: ##
798: my $interval = {
799: begin_index => $begin_index,
800: end_index => $end_index,
801: startdateform => $startdateform,
802: enddateform => $enddateform,
803: };
804: if ($ENV{'form.AnalyzeAs'} eq 'Foils') {
805: $table .= &OR_Foil_Time_Analysis($PerformanceData,$ORdata,$Foils,
806: $interval);
807: } else {
808: $table .= &OR_Concept_Time_Analysis($PerformanceData,$ORdata,
809: $Concepts,$interval);
810: }
811: }
812: #
813: return $table;
814: }
815:
816: sub OR_Foil_Time_Analysis {
817: my ($PerformanceData,$ORdata,$Foils,$interval) = @_;
818: my $analysis_html;
819: my $foilkey = &build_option_index($ORdata);
820: my ($begin_index,$end_index) = ($interval->{'begin_index'},
821: $interval->{'end_index'});
822: my %TimeData;
823: #
824: # Compute the number getting the foils correct or incorrects
825: for (my $j=$begin_index;$j<=$end_index;$j++) {
826: my $row = $PerformanceData->[$j];
827: next if (! defined($row));
828: my %Row = &Process_OR_Row($row);
829: while (my ($foilid,$href) = each(%Row)) {
830: if (! ref($href)) {
831: $TimeData{$foilid} += $href;
832: next;
833: }
834: while (my ($option,$value) = each(%$href)) {
835: $TimeData{$foilid}->{$option}+=$value;
836: }
837: }
838: }
839: my @Plotdata;
840: foreach my $foil (@$Foils) {
841: my $total = $TimeData{$foil}->{'_total'};
842: if ($total == 0) {
843: push(@{$Plotdata[0]},0);
844: } else {
845: push(@{$Plotdata[0]},
846: 100 * $TimeData{$foil}->{'_correct'} / $total);
847: }
848: my $total_incorrect = $total - $TimeData{$foil}->{'_correct'};
849: my $optionidx = 1;
850: foreach my $option (@{$ORdata->{'_Options'}}) {
851: if ($total_incorrect == 0) {
852: push(@{$Plotdata[$optionidx]},0);
853: } else {
854: push(@{$Plotdata[$optionidx]},
855: 100 * $TimeData{$foil}->{$option} / $total_incorrect);
856: }
857: } continue {
858: $optionidx++;
859: }
860: }
861: #
862: # Create the plot
863: my $count = $end_index-$begin_index;
864: my $title;
865: if ($count == 0) {
866: $title = 'no submissions';
867: } elsif ($count == 1) {
868: $title = 'one submission';
869: } else {
870: $title = $count.' submissions';
871: }
872: my $correctplot = &Apache::loncommon::DrawBarGraph($title,
873: 'Foil Number',
874: 'Percent Correct',
875: 100,
876: $plotcolors,
877: undef,
878: $Plotdata[0]);
879: for (my $j=0; $j< scalar(@{$Plotdata[0]});$j++) {
880: $Plotdata[0]->[$j]=0;
881: }
882: $count = $end_index-$begin_index-$TimeData{'_correct'};
883: if ($count == 0) {
884: $title = 'no submissions';
885: } elsif ($count == 1) {
886: $title = 'one submission';
887: } else {
888: $title = $count.' submissions';
889: }
890: my $incorrectplot = &Apache::loncommon::DrawBarGraph($title,
891: 'Foil Number',
892: 'Incorrect Option Choice',
893: 100,
894: $plotcolors,
895: undef,
896: @Plotdata);
897: $analysis_html.='<tr>'.
898: '<td>'.$correctplot.'</td>'.
899: '<td>'.$incorrectplot.'</td>'.
900: '<td align="left" valign="top">'.$foilkey.'</td>'."</tr>\n";
901: $analysis_html.= '<tr>'.'<td colspan="3">'.
902: '<b>Start Time</b>:'.
903: ' '.$interval->{'startdateform'}.'<br />'.
904: '<b>End Time</b> : '.
905: ' '.$interval->{'enddateform'}.'<br />'.
906: # '<b>Plot Title</b> :'.
907: # (" "x3).$interval->{'titleform'}.
908: '</td>'.
909: "</tr>\n";
910: return $analysis_html;
911: }
912:
913: sub OR_Concept_Time_Analysis {
914: my ($PerformanceData,$ORdata,$Concepts,$interval) = @_;
915: my $analysis_html;
916: ##
917: ## Determine starttime, endtime, startindex, endindex
918: my ($begin_index,$end_index) = ($interval->{'begin_index'},
919: $interval->{'end_index'});
920: my %TimeData;
921: #
922: # Compute the number getting the foils correct or incorrects
923: for (my $j=$begin_index;$j<=$end_index;$j++) {
924: my $row = $PerformanceData->[$j];
925: next if (! defined($row));
926: my %Row = &Process_OR_Row($row);
927: while (my ($foilid,$href) = each(%Row)) {
928: if (! ref($href)) {
929: $TimeData{$foilid} += $href;
930: next;
931: }
932: while (my ($option,$value) = each(%$href)) {
933: $TimeData{$foilid}->{$option}+=$value;
934: }
935: }
936: }
937: #
938: # Put the data in plottable form
939: my @Plotdata;
940: foreach my $concept (@$Concepts) {
941: my ($total,$correct);
942: foreach my $foil (@{$concept->{'foils'}}) {
943: $total += $TimeData{$foil}->{'_total'};
944: $correct += $TimeData{$foil}->{'_correct'};
945: }
946: if ($total == 0) {
947: push(@Plotdata,0);
948: } else {
949: push(@Plotdata,100 * $correct / $total);
950: }
951: }
952: #
953: # Create the plot
954: my $title = ($end_index - $begin_index).' submissions';
955: my $correctplot = &Apache::loncommon::DrawBarGraph($title,
956: 'Concept Number',
957: 'Percent Correct',
958: 100,
959: $plotcolors,
960: undef,
961: \@Plotdata);
962: $analysis_html.='<tr>'.
963: '<td>'.$correctplot.'</td>'.
964: '<td align="left" valign="top">'.
965: '<b>Start Time</b>: '.$interval->{'startdateform'}.'<br />'.
966: '<b>End Time</b> : '.
967: ' '.$interval->{'enddateform'}.'<br />'.
968: # '<b>Plot Title</b> :'.(" "x3).
969: # $interval->{'titleform'}.
970: '</td>'.
971: "</tr>\n";
972: return $analysis_html;
973: }
974:
975: #########################################################
976: #########################################################
977: ##
978: ## Excel output
979: ##
980: #########################################################
981: #########################################################
982: sub OR_excel_sheet {
983: my ($r,$resource,$PerformanceData,$ORdata) = @_;
984: my $response = '';
985: my (undef,$Foils,$Concepts) = &build_foil_index($ORdata);
986: #
987: # Create excel worksheet
988: my $filename = '/prtspool/'.
989: $ENV{'user.name'}.'_'.$ENV{'user.domain'}.'_'.
990: time.'_'.rand(1000000000).'.xls';
991: my $workbook = Spreadsheet::WriteExcel->new('/home/httpd'.$filename);
992: if (! defined($workbook)) {
993: $r->log_error("Error creating excel spreadsheet $filename: $!");
994: $r->print('<p>'.&mt("Unable to create new Excel file. ".
995: "This error has been logged. ".
996: "Please alert your LON-CAPA administrator").
997: '</p>');
998: return undef;
999: }
1000: #
1001: $workbook->set_tempdir('/home/httpd/perl/tmp');
1002: #
1003: # Define some potentially useful formats
1004: my $format;
1005: $format->{'header'} = $workbook->add_format(bold => 1,
1006: bottom => 1,
1007: align => 'center');
1008: $format->{'bold'} = $workbook->add_format(bold=>1);
1009: $format->{'h1'} = $workbook->add_format(bold=>1, size=>18);
1010: $format->{'h2'} = $workbook->add_format(bold=>1, size=>16);
1011: $format->{'h3'} = $workbook->add_format(bold=>1, size=>14);
1012: $format->{'date'} = $workbook->add_format(num_format=>
1013: 'mmm d yyyy hh:mm AM/PM');
1014: #
1015: # Create and populate main worksheets
1016: my $problem_data_sheet = $workbook->addworksheet('Problem Data');
1017: my $student_data_sheet = $workbook->addworksheet('Student Data');
1018: my $response_data_sheet = $workbook->addworksheet('Response Data');
1019: foreach my $sheet ($problem_data_sheet,$student_data_sheet,
1020: $response_data_sheet) {
1021: $sheet->write(0,0,$resource->{'title'},$format->{'h2'});
1022: $sheet->write(1,0,$resource->{'src'},$format->{'h3'});
1023: }
1024: #
1025: my $result;
1026: $result = &OR_build_problem_data_worksheet($problem_data_sheet,$format,
1027: $Concepts,$ORdata);
1028: if ($result ne 'okay') {
1029: # Do something useful
1030: }
1031: $result = &OR_build_student_data_worksheet($student_data_sheet,$format);
1032: if ($result ne 'okay') {
1033: # Do something useful
1034: }
1035: $result = &OR_build_response_data_worksheet($response_data_sheet,$format,
1036: $PerformanceData,$Foils,
1037: $ORdata);
1038: if ($result ne 'okay') {
1039: # Do something useful
1040: }
1041: $response_data_sheet->activate();
1042: #
1043: # Close the excel file
1044: $workbook->close();
1045: #
1046: # Write a link to allow them to download it
1047: $result .= '<h2>'.&mt('Excel Raw Data Output').'</h2>'.
1048: '<p><a href="'.$filename.'">'.
1049: &mt('Your Excel spreadsheet.').
1050: '</a></p>'."\n";
1051: return $result;
1052: }
1053:
1054: sub OR_build_problem_data_worksheet {
1055: my ($worksheet,$format,$Concepts,$ORdata) = @_;
1056: my $rows_output = 3;
1057: my $cols_output = 0;
1058: $worksheet->write($rows_output++,0,'Problem Structure',$format->{'h3'});
1059: ##
1060: ##
1061: my @Headers;
1062: if (@$Concepts > 1) {
1063: @Headers = ("Concept\nNumber",'Concept',"Foil\nNumber",
1064: 'Foil Name','Foil Text','Correct value');
1065: } else {
1066: @Headers = ('Foil Number','FoilName','Foil Text','Correct value');
1067: }
1068: $worksheet->write_row($rows_output++,0,\@Headers,$format->{'header'});
1069: my %Foildata = %{$ORdata->{'_Foils'}};
1070: my $conceptindex = 1;
1071: my $foilindex = 1;
1072: foreach my $concept (@$Concepts) {
1073: my @FoilsInConcept = @{$concept->{'foils'}};
1074: my $firstfoil = shift(@FoilsInConcept);
1075: if (@$Concepts > 1) {
1076: $worksheet->write_row($rows_output++,0,
1077: [$conceptindex,
1078: $concept->{'name'},
1079: $foilindex++,
1080: $Foildata{$firstfoil}->{'name'},
1081: $Foildata{$firstfoil}->{'text'},
1082: $Foildata{$firstfoil}->{'value'},]);
1083: } else {
1084: $worksheet->write_row($rows_output++,0,
1085: [ $foilindex++,
1086: $Foildata{$firstfoil}->{'name'},
1087: $Foildata{$firstfoil}->{'text'},
1088: $Foildata{$firstfoil}->{'value'},]);
1089: }
1090: foreach my $foilid (@FoilsInConcept) {
1091: if (@$Concepts > 1) {
1092: $worksheet->write_row($rows_output++,0,
1093: ['',
1094: '',
1095: $foilindex,
1096: $Foildata{$foilid}->{'name'},
1097: $Foildata{$foilid}->{'text'},
1098: $Foildata{$foilid}->{'value'},]);
1099: } else {
1100: $worksheet->write_row($rows_output++,0,
1101: [$foilindex,
1102: $Foildata{$foilid}->{'name'},
1103: $Foildata{$foilid}->{'text'},
1104: $Foildata{$foilid}->{'value'},]);
1105: }
1106: } continue {
1107: $foilindex++;
1108: }
1109: } continue {
1110: $conceptindex++;
1111: }
1112: $rows_output++;
1113: $rows_output++;
1114: ##
1115: ## Option data output
1116: $worksheet->write($rows_output++,0,'Options',$format->{'header'});
1117: foreach my $string (@{$ORdata->{'_Options'}}) {
1118: $worksheet->write($rows_output++,0,$string);
1119: }
1120: return 'okay';
1121: }
1122:
1123: sub OR_build_student_data_worksheet {
1124: my ($worksheet,$format) = @_;
1125: my $rows_output = 3;
1126: my $cols_output = 0;
1127: $worksheet->write($rows_output++,0,'Student Data',$format->{'h3'});
1128: my @Headers = ('full name','username','domain','section',
1129: "student\nnumber",'identifier');
1130: $worksheet->write_row($rows_output++,0,\@Headers,$format->{'header'});
1131: my @Students = @Apache::lonstatistics::Students;
1132: my $studentrows = &Apache::loncoursedata::get_student_data(\@Students);
1133: my %ids;
1134: foreach my $row (@$studentrows) {
1135: my ($mysqlid,$student) = @$row;
1136: $ids{$student}=$mysqlid;
1137: }
1138: foreach my $student (@Students) {
1139: my $name_domain = $student->{'username'}.':'.$student->{'domain'};
1140: $worksheet->write_row($rows_output++,0,
1141: [$student->{'fullname'},
1142: $student->{'username'},$student->{'domain'},
1143: $student->{'section'},$student->{'id'},
1144: $ids{$name_domain}]);
1145: }
1146: return;
1147: }
1148:
1149: sub OR_build_response_data_worksheet {
1150: my ($worksheet,$format,$PerformanceData,$Foils,$ORdata)=@_;
1151: my $rows_output = 3;
1152: my $cols_output = 0;
1153: $worksheet->write($rows_output++,0,'Response Data',$format->{'h3'});
1154: $worksheet->set_column(1,1,20);
1155: $worksheet->set_column(2,2,13);
1156: my @Headers = ('identifier','time','award detail','attempt');
1157: foreach my $foil (@$Foils) {
1158: push (@Headers,$foil.' submission');
1159: push (@Headers,$foil.' grading');
1160: }
1161: $worksheet->write_row($rows_output++,0,\@Headers,$format->{'header'});
1162: #
1163: foreach my $row (@$PerformanceData) {
1164: next if (! defined($row));
1165: my ($student,$award,$grading,$submission,$time,$tries) = @$row;
1166: my @Foilgrades = split('&',$grading);
1167: my @Foilsubs = split('&',$submission);
1168: my %ResponseData;
1169: for (my $j=0;$j<=$#Foilgrades;$j++) {
1170: my ($foilid,$correct) = split('=',$Foilgrades[$j]);
1171: my (undef,$submission) = split('=',$Foilsubs[$j]);
1172: $submission = &Apache::lonnet::unescape($submission);
1173: $ResponseData{$foilid.' submission'}=$submission;
1174: $ResponseData{$foilid.' award'}=$correct;
1175: }
1176: $worksheet->write($rows_output,$cols_output++,$student);
1177: $worksheet->write($rows_output,$cols_output++,
1178: &calc_serial($time),$format->{'date'});
1179: $worksheet->write($rows_output,$cols_output++,$award);
1180: $worksheet->write($rows_output,$cols_output++,$tries);
1181: foreach my $foilid (@$Foils) {
1182: $worksheet->write($rows_output,$cols_output++,
1183: $ResponseData{$foilid.' submission'});
1184: $worksheet->write($rows_output,$cols_output++,
1185: $ResponseData{$foilid.' award'});
1186: }
1187: $rows_output++;
1188: $cols_output = 0;
1189: }
1190: return;
1191: }
1192:
1193:
1194: ##
1195: ## The following is copied from datecalc1.pl, part of the
1196: ## Spreadsheet::WriteExcel CPAN module.
1197: ##
1198: ##
1199: ######################################################################
1200: #
1201: # Demonstration of writing date/time cells to Excel spreadsheets,
1202: # using UNIX/Perl time as source of date/time.
1203: #
1204: # Copyright 2000, Andrew Benham, adsb@bigfoot.com
1205: #
1206: ######################################################################
1207: #
1208: # UNIX/Perl time is the time since the Epoch (00:00:00 GMT, 1 Jan 1970)
1209: # measured in seconds.
1210: #
1211: # An Excel file can use exactly one of two different date/time systems.
1212: # In these systems, a floating point number represents the number of days
1213: # (and fractional parts of the day) since a start point. The floating point
1214: # number is referred to as a 'serial'.
1215: # The two systems ('1900' and '1904') use different starting points:
1216: # '1900'; '1.00' is 1 Jan 1900 BUT 1900 is erroneously regarded as
1217: # a leap year - see:
1218: # http://support.microsoft.com/support/kb/articles/Q181/3/70.asp
1219: # for the excuse^H^H^H^H^H^Hreason.
1220: # '1904'; '1.00' is 2 Jan 1904.
1221: #
1222: # The '1904' system is the default for Apple Macs. Windows versions of
1223: # Excel have the option to use the '1904' system.
1224: #
1225: # Note that Visual Basic's "DateSerial" function does NOT erroneously
1226: # regard 1900 as a leap year, and thus its serials do not agree with
1227: # the 1900 serials of Excel for dates before 1 Mar 1900.
1228: #
1229: # Note that StarOffice (at least at version 5.2) does NOT erroneously
1230: # regard 1900 as a leap year, and thus its serials do not agree with
1231: # the 1900 serials of Excel for dates before 1 Mar 1900.
1232: #
1233: ######################################################################
1234: #
1235: # Calculation description
1236: # =======================
1237: #
1238: # 1900 system
1239: # -----------
1240: # Unix time is '0' at 00:00:00 GMT 1 Jan 1970, i.e. 70 years after 1 Jan 1900.
1241: # Of those 70 years, 17 (1904,08,12,16,20,24,28,32,36,40,44,48,52,56,60,64,68)
1242: # were leap years with an extra day.
1243: # Thus there were 17 + 70*365 days = 25567 days between 1 Jan 1900 and
1244: # 1 Jan 1970.
1245: # In the 1900 system, '1' is 1 Jan 1900, but as 1900 was not a leap year
1246: # 1 Jan 1900 should really be '2', so 1 Jan 1970 is '25569'.
1247: #
1248: # 1904 system
1249: # -----------
1250: # Unix time is '0' at 00:00:00 GMT 1 Jan 1970, i.e. 66 years after 1 Jan 1904.
1251: # Of those 66 years, 17 (1904,08,12,16,20,24,28,32,36,40,44,48,52,56,60,64,68)
1252: # were leap years with an extra day.
1253: # Thus there were 17 + 66*365 days = 24107 days between 1 Jan 1904 and
1254: # 1 Jan 1970.
1255: # In the 1904 system, 2 Jan 1904 being '1', 1 Jan 1970 is '24107'.
1256: #
1257: ######################################################################
1258: #
1259: # Copyright (c) 2000, Andrew Benham.
1260: # This program is free software. It may be used, redistributed and/or
1261: # modified under the same terms as Perl itself.
1262: #
1263: # Andrew Benham, adsb@bigfoot.com
1264: # London, United Kingdom
1265: # 11 Nov 2000
1266: #
1267: ######################################################################
1268:
1269: # Use 1900 date system on all platforms other than Apple Mac (for which
1270: # use 1904 date system).
1271: my $DATE_SYSTEM = ($^O eq 'MacOS') ? 1 : 0;
1272:
1273: #-----------------------------------------------------------
1274: # calc_serial()
1275: #
1276: # Called with (up to) 2 parameters.
1277: # 1. Unix timestamp. If omitted, uses current time.
1278: # 2. GMT flag. Set to '1' to return serial in GMT.
1279: # If omitted, returns serial in appropriate timezone.
1280: #
1281: # Returns date/time serial according to $DATE_SYSTEM selected
1282: #-----------------------------------------------------------
1283: sub calc_serial {
1284: my $time = (defined $_[0]) ? $_[0] : time();
1285: my $gmtflag = (defined $_[1]) ? $_[1] : 0;
1286:
1287: # Divide timestamp by number of seconds in a day.
1288: # This gives a date serial with '0' on 1 Jan 1970.
1289: my $serial = $time / 86400;
1290:
1291: # Adjust the date serial by the offset appropriate to the
1292: # currently selected system (1900/1904).
1293: if ($DATE_SYSTEM == 0) { # use 1900 system
1294: $serial += 25569;
1295: } else { # use 1904 system
1296: $serial += 24107;
1297: }
1298:
1299: unless ($gmtflag) {
1300: # Now have a 'raw' serial with the right offset. But this
1301: # gives a serial in GMT, which is false unless the timezone
1302: # is GMT. We need to adjust the serial by the appropriate
1303: # timezone offset.
1304: # Calculate the appropriate timezone offset by seeing what
1305: # the differences between localtime and gmtime for the given
1306: # time are.
1307:
1308: my @gmtime = gmtime($time);
1309: my @ltime = localtime($time);
1310:
1311: # For the first 7 elements of the two arrays, adjust the
1312: # date serial where the elements differ.
1313: for (0 .. 6) {
1314: my $diff = $ltime[$_] - $gmtime[$_];
1315: if ($diff) {
1316: $serial += _adjustment($diff,$_);
1317: }
1318: }
1319: }
1320:
1321: # Perpetuate the error that 1900 was a leap year by decrementing
1322: # the serial if we're using the 1900 system and the date is prior to
1323: # 1 Mar 1900. This has the effect of making serial value '60'
1324: # 29 Feb 1900.
1325:
1326: # This fix only has any effect if UNIX/Perl time on the platform
1327: # can represent 1900. Many can't.
1328:
1329: unless ($DATE_SYSTEM) {
1330: $serial-- if ($serial < 61); # '61' is 1 Mar 1900
1331: }
1332: return $serial;
1333: }
1334:
1335: sub _adjustment {
1336: # Based on the difference in the localtime/gmtime array elements
1337: # number, return the adjustment required to the serial.
1338:
1339: # We only look at some elements of the localtime/gmtime arrays:
1340: # seconds unlikely to be different as all known timezones
1341: # have an offset of integral multiples of 15 minutes,
1342: # but it's easy to do.
1343: # minutes will be different for timezone offsets which are
1344: # not an exact number of hours.
1345: # hours very likely to be different.
1346: # weekday will differ when localtime/gmtime difference
1347: # straddles midnight.
1348: #
1349: # Assume that difference between localtime and gmtime is less than
1350: # 5 days, then don't have to do maths for day of month, month number,
1351: # year number, etc...
1352:
1353: my ($delta,$element) = @_;
1354: my $adjust = 0;
1355:
1356: if ($element == 0) { # Seconds
1357: $adjust = $delta/86400; # 60 * 60 * 24
1358: } elsif ($element == 1) { # Minutes
1359: $adjust = $delta/1440; # 60 * 24
1360: } elsif ($element == 2) { # Hours
1361: $adjust = $delta/24; # 24
1362: } elsif ($element == 6) { # Day of week number
1363: # Catch difference straddling Sat/Sun in either direction
1364: $delta += 7 if ($delta < -4);
1365: $delta -= 7 if ($delta > 4);
1366:
1367: $adjust = $delta;
1368: }
1369: return $adjust;
1370: }
1371:
1372: sub build_foil_index {
1373: my ($ORdata) = @_;
1374: return if (! exists($ORdata->{'_Foils'}));
1375: my %Foildata = %{$ORdata->{'_Foils'}};
1376: my @Foils = sort(keys(%Foildata));
1377: my %Concepts;
1378: foreach my $foilid (@Foils) {
1379: push(@{$Concepts{$Foildata{$foilid}->{'_Concept'}}},
1380: $foilid);
1381: }
1382: undef(@Foils);
1383: # Having gathered the concept information in a hash, we now translate it
1384: # into an array because we need to be consistent about order.
1385: # Also put the foils in order, too.
1386: my $sortfunction = sub {
1387: my %Numbers = (one => 1,
1388: two => 2,
1389: three => 3,
1390: four => 4,
1391: five => 5,
1392: six => 6,
1393: seven => 7,
1394: eight => 8,
1395: nine => 9,
1396: ten => 10,);
1397: my $a1 = lc($a);
1398: my $b1 = lc($b);
1399: if (exists($Numbers{$a1})) {
1400: $a1 = $Numbers{$a1};
1401: }
1402: if (exists($Numbers{$b1})) {
1403: $b1 = $Numbers{$b1};
1404: }
1405: if (($a1 =~/^\d+$/) && ($b1 =~/^\d+$/)) {
1406: return $a1 <=> $b1;
1407: } else {
1408: return $a1 cmp $b1;
1409: }
1410: };
1411: my @Concepts;
1412: foreach my $concept (sort $sortfunction (keys(%Concepts))) {
1413: if (! defined($Concepts{$concept})) {
1414: $Concepts{$concept}=[];
1415: # next;
1416: }
1417: push(@Concepts,{ name => $concept,
1418: foils => [@{$Concepts{$concept}}]});
1419: push(@Foils,(@{$Concepts{$concept}}));
1420: }
1421: #
1422: # Build up the table of row labels.
1423: my $table = '<table border="1" >'."\n";
1424: if (@Concepts > 1) {
1425: $table .= '<tr>'.
1426: '<th>'.&mt('Concept Number').'</th>'.
1427: '<th>'.&mt('Concept').'</th>'.
1428: '<th>'.&mt('Foil Number').'</th>'.
1429: '<th>'.&mt('Foil Name').'</th>'.
1430: '<th>'.&mt('Foil Text').'</th>'.
1431: '<th>'.&mt('Correct Value').'</th>'.
1432: "</tr>\n";
1433: } else {
1434: $table .= '<tr>'.
1435: '<th>'.&mt('Foil Number').'</th>'.
1436: '<th>'.&mt('Foil Name').'</th>'.
1437: '<th>'.&mt('Foil Text').'</th>'.
1438: '<th>'.&mt('Correct Value').'</th>'.
1439: "</tr>\n";
1440: }
1441: my $conceptindex = 1;
1442: my $foilindex = 1;
1443: foreach my $concept (@Concepts) {
1444: my @FoilsInConcept = @{$concept->{'foils'}};
1445: my $firstfoil = shift(@FoilsInConcept);
1446: if (@Concepts > 1) {
1447: $table .= '<tr>'.
1448: '<td>'.$conceptindex.'</td>'.
1449: '<td>'.&HTML::Entities::encode($concept->{'name'}).'</td>'.
1450: '<td>'.$foilindex++.'</td>'.
1451: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'name'}).'</td>'.
1452: '<td>'.$Foildata{$firstfoil}->{'text'}.'</td>'.
1453: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'value'}).'</td>'.
1454: "</tr>\n";
1455: } else {
1456: $table .= '<tr>'.
1457: '<td>'.$foilindex++.'</td>'.
1458: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'name'}).'</td>'.
1459: '<td>'.$Foildata{$firstfoil}->{'text'}.'</td>'.
1460: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'value'}).'</td>'.
1461: "</tr>\n";
1462: }
1463: foreach my $foilid (@FoilsInConcept) {
1464: if (@Concepts > 1) {
1465: $table .= '<tr>'.
1466: '<td></td>'.
1467: '<td></td>'.
1468: '<td>'.$foilindex.'</td>'.
1469: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'name'}).'</td>'.
1470: '<td>'.$Foildata{$foilid}->{'text'}.'</td>'.
1471: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'value'}).'</td>'.
1472: "</tr>\n";
1473: } else {
1474: $table .= '<tr>'.
1475: '<td>'.$foilindex.'</td>'.
1476: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'name'}).'</td>'.
1477: '<td>'.$Foildata{$foilid}->{'text'}.'</td>'.
1478: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'value'}).'</td>'.
1479: "</tr>\n";
1480: }
1481: } continue {
1482: $foilindex++;
1483: }
1484: } continue {
1485: $conceptindex++;
1486: }
1487: $table .= "</table>\n";
1488: #
1489: # Build option index with color stuff
1490: return ($table,\@Foils,\@Concepts);
1491: }
1492:
1493: sub build_option_index {
1494: my ($ORdata)= @_;
1495: my $table = "<table>\n";
1496: my $optionindex = 0;
1497: my @Rows;
1498: foreach my $option (&mt('correct option chosen'),@{$ORdata->{'_Options'}}) {
1499: push (@Rows,
1500: '<tr>'.
1501: '<td bgcolor="'.$plotcolors->[$optionindex++].'">'.
1502: (' 'x4).'</td>'.
1503: '<td>'.&HTML::Entities::encode($option).'</td>'.
1504: "</tr>\n");
1505: }
1506: shift(@Rows); # Throw away 'correct option chosen' color
1507: $table .= join('',reverse(@Rows));
1508: $table .= "</table>\n";
1509: }
1510:
1511: #########################################################
1512: #########################################################
1513: ##
1514: ## Generic Interface Routines
1515: ##
1516: #########################################################
1517: #########################################################
1518: sub CreateInterface {
1519: ##
1520: ## Environment variable initialization
1521: if (! exists$ENV{'form.AnalyzeOver'}) {
1522: $ENV{'form.AnalyzeOver'} = 'Tries';
1523: }
1524: ##
1525: ## Build the menu
1526: my $Str = '';
1527: $Str .= '<table cellspacing="5">'."\n";
1528: $Str .= '<tr>';
1529: $Str .= '<td align="center"><b>'.&mt('Sections').'</b></td>';
1530: $Str .= '<td align="center"><b>'.&mt('Enrollment Status').'</b></td>';
1531: # $Str .= '<td align="center"><b>'.&mt('Sequences and Folders').'</b></td>';
1532: $Str .= '<td align="center"> </td>';
1533: $Str .= '</tr>'."\n";
1534: ##
1535: ##
1536: $Str .= '<tr><td align="center">'."\n";
1537: $Str .= &Apache::lonstatistics::SectionSelect('Section','multiple',5);
1538: $Str .= '</td>';
1539: #
1540: $Str .= '<td align="center">';
1541: $Str .= &Apache::lonhtmlcommon::StatusOptions(undef,undef,5);
1542: $Str .= '</td>';
1543: #
1544: # $Str .= '<td align="center">';
1545: my $only_seq_with_assessments = sub {
1546: my $s=shift;
1547: if ($s->{'num_assess'} < 1) {
1548: return 0;
1549: } else {
1550: return 1;
1551: }
1552: };
1553: &Apache::lonstatistics::MapSelect('Maps','multiple,all',5,
1554: $only_seq_with_assessments);
1555: ##
1556: ##
1557: $Str .= '<td>';
1558: { # These braces are here to organize the code, not scope it.
1559: {
1560: $Str .= '<nobr>'.&mt('Analyze Over ');
1561: $Str .= &Apache::loncommon::help_open_topic
1562: ('Analysis_Analyze_Over');
1563: $Str .='<select name="AnalyzeOver" >';
1564: $Str .= '<option value="Tries" ';
1565: if (! exists($ENV{'form.AnalyzeOver'}) ||
1566: $ENV{'form.AnalyzeOver'} eq 'Tries'){
1567: # Default to Tries
1568: $Str .= ' selected ';
1569: }
1570: $Str .= '>'.&mt('Tries').'</option>';
1571: $Str .= '<option value="Time" ';
1572: $Str .= ' selected ' if ($ENV{'form.AnalyzeOver'} eq 'Time');
1573: $Str .= '>'.&mt('Time').'</option>';
1574: $Str .= '</select>';
1575: $Str .= '</nobr><br />';
1576: }
1577: {
1578: $Str .= '<nobr>'.&mt('Analyze as ');
1579: $Str .= &Apache::loncommon::help_open_topic
1580: ('Analysis_Analyze_as');
1581: $Str .='<select name="AnalyzeAs" >';
1582: $Str .= '<option value="Concepts" ';
1583: if (! exists($ENV{'form.AnalyzeAs'}) ||
1584: $ENV{'form.AnalyzeAs'} eq 'Concepts'){
1585: # Default to Concepts
1586: $Str .= ' selected ';
1587: }
1588: $Str .= '>'.&mt('Concepts').'</option>';
1589: $Str .= '<option value="Foils" ';
1590: $Str .= ' selected ' if ($ENV{'form.AnalyzeAs'} eq 'Foils');
1591: $Str .= '>'.&mt('Foils').'</option>';
1592: $Str .= '</select></nobr><br />';
1593: }
1594: {
1595: $Str .= '<br /><nobr>'.&mt('Number of Plots:');
1596: $Str .= &Apache::loncommon::help_open_topic
1597: ('Analysis_num_plots');
1598: $Str .= '<select name="NumPlots">';
1599: if (! exists($ENV{'form.NumPlots'})
1600: || $ENV{'form.NumPlots'} < 1
1601: || $ENV{'form.NumPlots'} > 20) {
1602: $ENV{'form.NumPlots'} = 5;
1603: }
1604: foreach my $i (1,2,3,4,5,6,7,8,10,15,20) {
1605: $Str .= '<option value="'.$i.'" ';
1606: if ($ENV{'form.NumPlots'} == $i) { $Str.=' selected '; }
1607: $Str .= '>'.$i.'</option>';
1608: }
1609: $Str .= '</select></nobr>';
1610: }
1611: }
1612: $Str .= '</td>';
1613: ##
1614: ##
1615: $Str .= '</tr>'."\n";
1616: $Str .= '</table>'."\n";
1617: return $Str;
1618: }
1619:
1620: #########################################################
1621: #########################################################
1622: ##
1623: ## Misc Option Response functions
1624: ##
1625: #########################################################
1626: #########################################################
1627: sub get_time_from_row {
1628: my ($row) = @_;
1629: if (ref($row)) {
1630: return $row->[&Apache::loncoursedata::RD_timestamp()];
1631: }
1632: return undef;
1633: }
1634:
1635: sub get_tries_from_row {
1636: my ($row) = @_;
1637: if (ref($row)) {
1638: return $row->[&Apache::loncoursedata::RD_tries()];
1639: }
1640: return undef;
1641: }
1642:
1643: sub hashify_attempt {
1644: my ($row) = @_;
1645: my %attempt;
1646: $attempt{'tries'} = $row->[&Apache::loncoursedata::RD_tries()];
1647: $attempt{'submission'} = $row->[&Apache::loncoursedata::RD_submission()];
1648: $attempt{'award'} = $row->[&Apache::loncoursedata::RD_awarddetail()];
1649: $attempt{'timestamp'} = $row->[&Apache::loncoursedata::RD_timestamp()];
1650: return %attempt;
1651: }
1652:
1653: sub Process_OR_Row {
1654: my ($row) = @_;
1655: my %RowData;
1656: my $student_id = $row->[&Apache::loncoursedata::RD_student_id()];
1657: my $award = $row->[&Apache::loncoursedata::RD_awarddetail()];
1658: my $grading = $row->[&Apache::loncoursedata::RD_response_eval()];
1659: my $submission = $row->[&Apache::loncoursedata::RD_submission()];
1660: my $time = $row->[&Apache::loncoursedata::RD_timestamp()];
1661: my $tries = $row->[&Apache::loncoursedata::RD_tries()];
1662: return undef if ($award eq 'MISSING_ANSWER');
1663: if ($award =~ /(APPROX_ANS|EXACT_ANS)/) {
1664: $RowData{'_correct'} = 1;
1665: }
1666: $RowData{'_total'} = 1;
1667: my @Foilgrades = split('&',$grading);
1668: my @Foilsubs = split('&',$submission);
1669: for (my $j=0;$j<=$#Foilgrades;$j++) {
1670: my ($foilid,$correct) = split('=',$Foilgrades[$j]);
1671: $foilid = &Apache::lonnet::unescape($foilid);
1672: my (undef,$submission) = split('=',$Foilsubs[$j]);
1673: if ($correct) {
1674: $RowData{$foilid}->{'_correct'}++;
1675: } else {
1676: $submission = &Apache::lonnet::unescape($submission);
1677: $RowData{$foilid}->{$submission}++;
1678: }
1679: $RowData{$foilid}->{'_total'}++;
1680: }
1681: return %RowData;
1682: }
1683:
1684:
1685: sub analyze_problem_as_student {
1686: my ($resource,$sname,$sdom,$partid,$respid) = @_;
1687: my $url = $resource->{'src'};
1688: my $symb = $resource->{'symb'};
1689: my $courseid = $ENV{'request.course.id'};
1690: my $Answ=&Apache::lonnet::ssi($url,('grade_target' => 'analyze',
1691: 'grade_domain' => $sdom,
1692: 'grade_username' => $sname,
1693: 'grade_symb' => $symb,
1694: 'grade_courseid' => $courseid));
1695: (my $garbage,$Answ)=split(/_HASH_REF__/,$Answ,2);
1696: my %Answer=&Apache::lonnet::str2hash($Answ);
1697: my $key = $partid.'.'.$respid.'.answer';
1698: my $student_answer = $Answer{$key}->[0];
1699: if (! defined($student_answer)) {
1700: $student_answer = $Answer{$key}->[1];
1701: }
1702: return ($student_answer);
1703: }
1704:
1705: ##
1706: ## get problem data and put it into a useful data structure.
1707: ## note: we must force each foil and option to not begin or end with
1708: ## spaces as they are stored without such data.
1709: ##
1710: sub get_problem_data {
1711: my ($url) = @_;
1712: my $Answ=&Apache::lonnet::ssi($url,('grade_target' => 'analyze'));
1713: (my $garbage,$Answ)=split(/_HASH_REF__/,$Answ,2);
1714: my %Answer;
1715: %Answer=&Apache::lonnet::str2hash($Answ);
1716: my %Partdata;
1717: foreach my $part (@{$Answer{'parts'}}) {
1718: while (my($key,$value) = each(%Answer)) {
1719: #
1720: # Logging code:
1721: if (0) {
1722: &Apache::lonnet::logthis($part.' got key "'.$key.'"');
1723: if (ref($value) eq 'ARRAY') {
1724: &Apache::lonnet::logthis(' '.join(',',@$value));
1725: } else {
1726: &Apache::lonnet::logthis(' '.$value);
1727: }
1728: }
1729: # End of logging code
1730: next if ($key !~ /^$part/);
1731: $key =~ s/^$part\.//;
1732: if (ref($value) eq 'ARRAY') {
1733: if ($key eq 'options') {
1734: $Partdata{$part}->{'_Options'}=$value;
1735: } elsif ($key eq 'concepts') {
1736: $Partdata{$part}->{'_Concepts'}=$value;
1737: } elsif ($key =~ /^concept\.(.*)$/) {
1738: my $concept = $1;
1739: foreach my $foil (@$value) {
1740: $Partdata{$part}->{'_Foils'}->{$foil}->{'_Concept'}=
1741: $concept;
1742: }
1743: } elsif ($key =~ /^(incorrect|answer|ans_low|ans_high)$/) {
1744: $Partdata{$part}->{$key}=$value;
1745: }
1746: } else {
1747: if ($key=~ /^foil\.text\.(.*)$/) {
1748: my $foil = $1;
1749: $Partdata{$part}->{'_Foils'}->{$foil}->{'name'}=$foil;
1750: $value =~ s/(\s*$|^\s*)//g;
1751: $Partdata{$part}->{'_Foils'}->{$foil}->{'text'}=$value;
1752: } elsif ($key =~ /^foil\.value\.(.*)$/) {
1753: my $foil = $1;
1754: $Partdata{$part}->{'_Foils'}->{$foil}->{'value'}=$value;
1755: }
1756: }
1757: }
1758: }
1759: return %Partdata;
1760: }
1761:
1762: 1;
1763:
1764: __END__
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