1: # The LearningOnline Network with CAPA
2: #
3: # $Id: lonproblemanalysis.pm,v 1.101 2004/10/29 16:39:42 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 Apache::lonstudentsubmissions();
38: use HTML::Entities();
39: use Time::Local();
40: use Spreadsheet::WriteExcel();
41:
42: my $plotcolors = ['#33ff00',
43: '#0033cc', '#990000', '#aaaa66', '#663399', '#ff9933',
44: '#66ccff', '#ff9999', '#cccc33', '#660000', '#33cc66',
45: ];
46:
47: my @SubmitButtons = ({ name => 'PrevProblemAnalysis',
48: text => 'Previous Problem' },
49: { name => 'ProblemAnalysis',
50: text => 'Analyze Problem Again' },
51: { name => 'NextProblemAnalysis',
52: text => 'Next Problem' },
53: { name => 'break'},
54: { name => 'SelectAnother',
55: text => 'Choose a different Problem' },
56: { name => 'ExcelOutput',
57: text => 'Produce Excel Output' });
58:
59: sub BuildProblemAnalysisPage {
60: my ($r,$c)=@_;
61: #
62: my %Saveable_Parameters = ('Status' => 'scalar',
63: 'Section' => 'array',
64: 'NumPlots' => 'scalar',
65: 'AnalyzeOver' => 'scalar',
66: );
67: &Apache::loncommon::store_course_settings('problem_analysis',
68: \%Saveable_Parameters);
69: &Apache::loncommon::restore_course_settings('problem_analysis',
70: \%Saveable_Parameters);
71: #
72: &Apache::lonstatistics::PrepareClasslist();
73: #
74: $r->print(&CreateInterface());
75: #
76: my @Students = @Apache::lonstatistics::Students;
77: #
78: if (@Students < 1 && exists($ENV{'form.firstrun'})) {
79: $r->print('<h2>There are no students in the sections selected</h2>');
80: }
81: #
82: my @CacheButtonHTML =
83: &Apache::lonstathelpers::manage_caches($r,'Statistics','stats_status');
84: $r->rflush();
85: #
86: # Support for numerical and radio response isn't complete enough to
87: # include in 1.2 release.
88: # my $problem_types = '(option|radiobutton|numerical)';
89: my $problem_types = '.';#(option)';
90: if (exists($ENV{'form.problemchoice'}) &&
91: ! exists($ENV{'form.SelectAnother'})) {
92: foreach my $button (@SubmitButtons) {
93: if ($button->{'name'} eq 'break') {
94: $r->print("<br />\n");
95: } else {
96: $r->print('<input type="submit" name="'.$button->{'name'}.'" '.
97: 'value="'.&mt($button->{'text'}).'" />');
98: $r->print(' 'x5);
99: }
100: }
101: foreach my $html (@CacheButtonHTML) {
102: $r->print($html.(' 'x5));
103: }
104: #
105: $r->print('<hr />');
106: $r->rflush();
107: #
108: # Determine which problem we are to analyze
109: my $current_problem = &Apache::lonstathelpers::get_target_from_id
110: ($ENV{'form.problemchoice'});
111: #
112: my ($prev,$curr,$next) =
113: &Apache::lonstathelpers::get_prev_curr_next($current_problem,
114: $problem_types,
115: 'response',
116: );
117: if (exists($ENV{'form.PrevProblemAnalysis'}) && defined($prev)) {
118: $current_problem = $prev;
119: } elsif (exists($ENV{'form.NextProblemAnalysis'}) && defined($next)) {
120: $current_problem = $next;
121: } else {
122: $current_problem = $curr;
123: }
124: #
125: # Store the current problem choice and send it out in the form
126: $ENV{'form.problemchoice'} =
127: &Apache::lonstathelpers::make_target_id($current_problem);
128: $r->print('<input type="hidden" name="problemchoice" value="'.
129: $ENV{'form.problemchoice'}.'" />');
130: #
131: if (! defined($current_problem->{'resource'})) {
132: $r->print('resource is undefined');
133: } else {
134: my $resource = $current_problem->{'resource'};
135: $r->print('<h1>'.$resource->{'title'}.'</h1>');
136: $r->print('<h3>'.$resource->{'src'}.'</h3>');
137: if ($ENV{'form.show_prob'} eq 'true') {
138: $r->print(&Apache::lonstathelpers::render_resource($resource));
139: }
140: $r->rflush();
141: my %Data = &Apache::lonstathelpers::get_problem_data
142: ($resource->{'src'});
143: my $problem_data = $Data{$current_problem->{'part'}.
144: '.'.
145: $current_problem->{'respid'}};
146: if ($current_problem->{'resptype'} eq 'option') {
147: &OptionResponseAnalysis($r,$current_problem,
148: $problem_data,
149: \@Students);
150: } elsif ($current_problem->{'resptype'} eq 'radiobutton') {
151: &radio_response_analysis($r,$current_problem,
152: $problem_data,
153: \@Students);
154: } elsif ($current_problem->{'resptype'} eq 'numerical') {
155: ##
156: ## analyze all responses of a problem at once
157: my $res = $current_problem->{'resource'};
158: foreach my $partid (@{$res->{'parts'}}) {
159: $current_problem->{'part'} = $partid;
160: foreach my $respid (@{$res->{'partdata'}->{$partid}->{'ResponseIds'}}) {
161: $current_problem->{'respid'}=$respid;
162: &NumericalResponseAnalysis($r,$current_problem,
163: $problem_data,\@Students);
164: }
165: }
166: } else {
167: $r->print('<h2>This analysis is not supported</h2>');
168: }
169: }
170: $r->print('<hr />');
171: } else {
172: $r->print('<input type="submit" name="ProblemAnalysis" value="'.
173: &mt('Analyze Problem').'" />');
174: $r->print(' 'x5);
175: $r->print('<h3>'.&mt('Please select a problem to analyze').'</h3>');
176: $r->print(&Apache::lonstathelpers::ProblemSelector
177: ($problem_types));
178: }
179: }
180:
181:
182: #########################################################
183: #########################################################
184: ##
185: ## Numerical Response Routines
186: ##
187: #########################################################
188: #########################################################
189: sub NumericalResponseAnalysis {
190: my ($r,$problem,$problem_data,$Students) = @_;
191: my $c = $r->connection();
192: my ($resource,$partid,$respid) = ($problem->{'resource'},
193: $problem->{'part'},
194: $problem->{'respid'});
195: #
196: if (scalar(@{$resource->{'parts'}})>1) {
197: if (@{$resource->{'partdata'}->{$partid}->{'ResponseIds'}}>1) {
198: $r->print('<h3>'.
199: &mt('Part [_1], response [_2].',$partid,$respid).
200: '</h3>');
201: } else {
202: $r->print('<h3>'.
203: &mt('Part [_1]',$partid,$respid).
204: '</h3>');
205: }
206: } elsif (@{$resource->{'partdata'}->{$partid}->{'ResponseIds'}}>1) {
207: $r->print('<h3>'.&mt('Response [_1]',$respid).'</h3>');
208: }
209: #
210: my $analysis_html;
211: my $PerformanceData = &Apache::loncoursedata::get_response_data
212: (\@Apache::lonstatistics::SelectedSections,
213: $Apache::lonstatistics::enrollment_status,
214: $resource->{'symb'},$respid);
215: if (! defined($PerformanceData) ||
216: ref($PerformanceData) ne 'ARRAY' ) {
217: $analysis_html = '<h2>'.
218: &mt('There is no submission data for this resource').
219: '</h2>';
220: $r->print($analysis_html);
221: return;
222: }
223: #
224: # This next call causes all the waiting around that people complain about
225: &Apache::lonstathelpers::GetStudentAnswers($r,$problem,$Students,
226: 'Statistics',
227: 'stats_status');
228: return if ($c->aborted());
229: #
230: # Collate the data
231: my %Data;
232: foreach my $student (@$Students) {
233: my $answer = $student->{'answer'};
234: $Data{$answer}++;
235: }
236: my @Labels = sort {$a <=> $b } keys(%Data);
237: my @PlotData = @Data{@Labels};
238: #
239: my $width = 500;
240: my $height = 100;
241: my $plot = &one_dimensional_plot($r,500,100,scalar(@$Students),
242: \@Labels,\@PlotData);
243: $r->print($plot);
244: return;
245: }
246:
247: sub one_dimensional_plot {
248: my ($r,$width,$height,$N,$Labels,$Data)=@_;
249: #
250: # Compute data -> image scaling factors
251: my $min = $Labels->[0];
252: my $max = $Labels->[-1];
253: if ($max == $min) {
254: $max =$min+1;
255: }
256: my $h_scale = ($width-10)/($max-$min);
257: #
258: my $max_y = 0;
259: foreach (@$Data) {
260: $max_y = $_ if ($max_y < $_);
261: }
262: my $ticscale = 5;
263: if ($max_y * $ticscale > $height/2) {
264: $ticscale = int($height/2/$max_y);
265: $ticscale = 1 if ($ticscale < 1);
266: }
267: #
268: # Create the plot
269: my $plot =
270: qq{<drawimage width="$width" height="$height" bgcolor="transparent" >};
271: for (my $idx=0;$idx<scalar(@$Labels);$idx++) {
272: my $xloc = 5+$h_scale*($Labels->[$idx] - $min);
273: my $top = $height/2-$Data->[$idx]*$ticscale;
274: my $bottom = $height/2+$Data->[$idx]*$ticscale;
275: $plot .=
276: &line($xloc,$top,$xloc,$bottom,'888888',1);
277: }
278: #
279: # Put the scale on last to ensure it is on top of the data.
280: if ($min < 0 && $max > 0) {
281: my $circle_x = 5+$h_scale*abs($min); # '0' in data coordinates
282: my $r = 4;
283: $plot .= &line(5,$height/2,$circle_x-$r,$height/2,'000000',1);
284: $plot .= &circle($circle_x,$height/2,$r+1,'000000');
285: $plot .= &line($circle_x+$r,$height/2,$width-5,$height/2,'000000',1);
286: } else {
287: $plot .= &line(5,$height/2,$width-5,$height/2,'000000',1);
288: }
289: $plot .= '</drawimage>';
290: my $plotresult = &Apache::lonxml::xmlparse($r,'web',$plot);
291:
292: my $title = 'Distribution of correct answers';
293: my $result = '<table>'.
294: '<tr><td colspan="3" align="center">'.
295: '<font size="+2">'.$title.' (N='.$N.')'.
296: '</font>'.
297: '</td></tr>'.
298: '<tr>'.
299: '<td valign="center">'.$min.'</td>'.
300: '<td>'.$plotresult.'</td>'.
301: '<td valign="center">'.$max.'</td>'.
302: '</tr>'.
303: '<tr><td colspan="3" align="center">'.
304: 'Maximum Number of Coinciding Values: '.$max_y.
305: '</td></tr>'.
306: '</table>';
307: return $result;
308: }
309:
310: ##
311: ## Helper subroutines for <drawimage>.
312: ## These should probably go somewhere more suitable soon.
313: sub line {
314: my ($x1,$y1,$x2,$y2,$color,$thickness) = @_;
315: return qq{<line x1="$x1" y1="$y1" x2="$x2" y2="$y2" color="$color" thickness="$thickness" />$/};
316: }
317:
318: sub text {
319: my ($x,$y,$color,$text,$font,$direction) = @_;
320: if (! defined($font) || $font !~ /^(tiny|small|medium|large|giant)$/) {
321: $font = 'medium';
322: }
323: if (! defined($direction) || $direction ne 'vertical') {
324: $direction = '';
325: }
326: return qq{<text x="$x" y="$y" color="$color" font="$font" direction="$direction" >$text</text>};
327: }
328:
329: sub rectangle {
330: my ($x1,$y1,$x2,$y2,$color,$thickness,$filled) = @_;
331: return qq{<rectangle x1="$x1" y1="$y1" x2="$x2" y2="$y2" color="$color" thickness="$thickness" filled="$filled" />};
332: }
333:
334: sub arc {
335: my ($x,$y,$width,$height,$start,$end,$color,$thickness,$filled)=@_;
336: return qq{<arc x="$x" y="$y" width="$width" height="$height" start="$start" end="$end" color="$color" thickness="$thickness" filled="$filled" />};
337: }
338:
339: sub circle {
340: my ($x,$y,$radius,$color,$thickness,$filled)=@_;
341: return &arc($x,$y,$radius,$radius,0,360,$color,$thickness,$filled);
342: }
343:
344: sub build_student_data_worksheet {
345: my ($workbook,$format) = @_;
346: my $rows_output = 3;
347: my $cols_output = 0;
348: my $worksheet = $workbook->addworksheet('Student Data');
349: $worksheet->write($rows_output++,0,'Student Data',$format->{'h3'});
350: my @Headers = ('full name','username','domain','section',
351: "student\nnumber",'identifier');
352: $worksheet->write_row($rows_output++,0,\@Headers,$format->{'header'});
353: my @Students = @Apache::lonstatistics::Students;
354: my $studentrows = &Apache::loncoursedata::get_student_data(\@Students);
355: my %ids;
356: foreach my $row (@$studentrows) {
357: my ($mysqlid,$student) = @$row;
358: $ids{$student}=$mysqlid;
359: }
360: foreach my $student (@Students) {
361: my $name_domain = $student->{'username'}.':'.$student->{'domain'};
362: $worksheet->write_row($rows_output++,0,
363: [$student->{'fullname'},
364: $student->{'username'},$student->{'domain'},
365: $student->{'section'},$student->{'id'},
366: $ids{$name_domain}]);
367: }
368: return $worksheet;
369: }
370:
371: #########################################################
372: #########################################################
373: ##
374: ## Radio Response Routines
375: ##
376: #########################################################
377: #########################################################
378: sub radio_response_analysis {
379: my ($r,$problem,$problem_analysis,$students) = @_;
380: #
381: if ($ENV{'form.AnalyzeOver'} !~ /^(tries|time)$/) {
382: $r->print('Bad request');
383: }
384: #
385: my ($resource,$partid,$respid) = ($problem->{'resource'},
386: $problem->{'part'},
387: $problem->{'respid'});
388: #
389: my $analysis_html;
390: my $foildata = $problem_analysis->{'_Foils'};
391: my ($table,$foils,$concepts) = &build_foil_index($problem_analysis);
392: #
393: my %true_foils;
394: my $num_true = 0;
395: if (! $problem_analysis->{'answercomputed'}) {
396: foreach my $foil (@$foils) {
397: if ($foildata->{$foil}->{'value'} eq 'true') {
398: $true_foils{$foil}++;
399: }
400: }
401: $num_true = scalar(keys(%true_foils));
402: }
403: #
404: $analysis_html .= $table;
405: # Gather student data
406: my $response_data = &Apache::loncoursedata::get_response_data
407: (\@Apache::lonstatistics::SelectedSections,
408: $Apache::lonstatistics::enrollment_status,
409: $resource->{'symb'},$respid);
410: my $correct; # either a hash reference or a scalar
411: if ($problem_analysis->{'answercomputed'} || scalar(@$concepts) > 1) {
412: # This takes a while for large classes...
413: &Apache::lonstathelpers::GetStudentAnswers($r,$problem,$students,
414: 'Statistics',
415: 'stats_status');
416: foreach my $student (@$students) {
417: my ($idx,@remainder) = split('&',$student->{'answer'});
418: my ($answer) = ($remainder[$idx]=~/^(.*)=([^=]*)$/);
419: $correct->{$student->{'username'}.':'.$student->{'domain'}}=
420: &Apache::lonnet::unescape($answer);
421: }
422: } else {
423: foreach my $foil (keys(%$foildata)) {
424: if ($foildata->{$foil}->{'value'} eq 'true') {
425: $correct = $foildata->{$foil}->{'name'};
426: }
427: }
428: }
429: #
430: if (! defined($response_data) || ref($response_data) ne 'ARRAY' ) {
431: $analysis_html = '<h2>'.
432: &mt('There is no submission data for this resource').
433: '</h2>';
434: $r->print($analysis_html);
435: return;
436: }
437: #
438: $analysis_html.='<table>';
439: for (my $plot_num = 1;$plot_num<=$ENV{'form.NumPlots'};$plot_num++) {
440: # classify data ->correct foil -> selected foil
441: my ($restriction_function,
442: $correct_foil_title,$incorrect_foil_title,
443: $pre_graph_text,$post_graph_text,
444: $no_data_text,@extra_data);
445: if ($ENV{'form.AnalyzeOver'} eq 'tries') {
446: $restriction_function = sub {($_[0]->{'tries'} == $plot_num?1:0)};
447: $correct_foil_title = 'Attempt '.$plot_num;
448: $incorrect_foil_title = 'Attempt '.$plot_num;
449: $pre_graph_text =
450: 'Attempt [_1], [_2] submissions, [_3] correct, [_4] incorrect';
451: $post_graph_text = '';
452: $no_data_text = 'No data exists for attempt [_1]';
453: } elsif ($ENV{'form.AnalyzeOver'} eq 'time') {
454: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
455: ('startdate_'.$plot_num);
456: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
457: ('enddate_'.$plot_num);
458: ($starttime,$endtime) = &ensure_start_end_times
459: ($starttime,$endtime,
460: &get_time_from_row($response_data->[0]),
461: &get_time_from_row($response_data->[-1]),
462: $plot_num);
463: $pre_graph_text =
464: 'Data from [_5] to [_6], [_2] submissions, [_3] correct, [_4] incorrect';
465: $extra_data[0] = &Apache::lonlocal::locallocaltime($starttime);
466: $extra_data[1] = &Apache::lonlocal::locallocaltime($endtime);
467: #
468: $post_graph_text =
469: &mt('Start time: [_1]',
470: &Apache::lonhtmlcommon::date_setter
471: ('Statistics','startdate_'.$plot_num,$starttime)).
472: '<br />'.
473: &mt('End time: [_1]',
474: &Apache::lonhtmlcommon::date_setter
475: ('Statistics','enddate_'.$plot_num,$endtime));
476: $restriction_function =
477: sub {
478: my $t = $_[0]->{'timestamp'};
479: if ($t >= $starttime && $t < $endtime) {
480: return 1;
481: } else {
482: return 0;
483: }
484: };
485: $no_data_text = 'No data for [_5] to [_6]';
486: }
487: my $foil_choice_data =
488: &RR_classify_response_data($response_data,$correct,
489: $restriction_function);
490: # &Apache::lonstathelpers::log_hash_ref($foil_choice_data);
491: my $answers;
492: if (ref($correct)) {
493: my %tmp;
494: foreach my $foil (values(%$correct)) {
495: $tmp{$foil}++;
496: }
497: $answers = [keys(%tmp)];
498: } else {
499: $answers = [$correct];
500: }
501: # Concept Plot
502: my $concept_plot = '';
503: if (scalar(@$concepts) > 1) {
504: $concept_plot = &RR_concept_plot($concepts,$foil_choice_data,
505: 'Correct Concepts');
506: }
507: # % Choosing plot
508: my $choice_plot = &RR_create_percent_selected_plot
509: ($concepts,$foils,$foil_choice_data,$correct_foil_title);
510: # for each correct foil, how did they mark it? (stacked bar graph)
511: my ($stacked_plot,$count_by_foil);
512: if ($problem_analysis->{'answercomputed'} || $num_true > 1) {
513: ($stacked_plot,$count_by_foil) =
514: &RR_create_stacked_selection_plot($foils,$foil_choice_data,
515: $incorrect_foil_title,
516: \%true_foils);
517: }
518: #
519: if ($concept_plot ne '' ||
520: $choice_plot ne '' ||
521: $stacked_plot ne '') {
522: my $correct = $foil_choice_data->{'_correct'};
523: if (! defined($correct) || $correct eq '') {
524: $correct = 0;
525: }
526: my $incorrect =
527: $analysis_html.= '<tr><td colspan="4" align="center">'.
528: '<font size="+1">'.
529: &mt($pre_graph_text,
530: $plot_num,$foil_choice_data->{'_count'},
531: $correct,
532: $foil_choice_data->{'_count'}-$correct,
533: @extra_data).
534: '</td></tr>'.$/;
535: $analysis_html.=
536: '<tr>'.
537: '<td>'.$concept_plot.'</td>'.
538: '<td>'.$choice_plot.'</td>';
539: if ($stacked_plot ne '') {
540: $analysis_html .=
541: '<td>'.$stacked_plot.'</td>'.
542: '<td>'.&build_foil_key($foils,$count_by_foil).'</td>';
543: } else {
544: $analysis_html .= ('<td></td>'x2);
545: }
546: $analysis_html.='</tr>'.$/;
547: if (defined($post_graph_text)) {
548: $analysis_html.= '<tr><td colspan="4" align="center">'.
549: $post_graph_text.'</td></tr>'.$/;
550: }
551: } elsif ($no_data_text ne '') {
552: $analysis_html.='<tr><td colspan="4" align="center">'.
553: &mt($no_data_text,
554: $plot_num,$foil_choice_data->{'_count'},
555: $correct,
556: $foil_choice_data->{'_count'}-$correct,
557: @extra_data);
558: if (defined($post_graph_text)) {
559: $analysis_html.='<br />'.$post_graph_text;
560: }
561: $analysis_html.='</td></tr>'.$/;
562: }
563: } # end of loop for plots
564: $analysis_html.='</table>';
565: $r->print($analysis_html);
566: }
567:
568: sub ensure_start_end_times {
569: my ($start,$end,$first,$last,$plot_num) = @_;
570: if (! defined($start) || ! defined($end)) {
571: my $sec_in_day = 86400;
572: my ($sday,$smon,$syear) =
573: (localtime($last - $sec_in_day*($plot_num-1)))[3..5];
574: $start = &Time::Local::timelocal(0,0,0,$sday,$smon,$syear);
575: $end = $start + $sec_in_day;
576: if ($plot_num == $ENV{'form.NumPlots'}) {
577: $start = $first;
578: }
579: }
580: return ($start,$end);
581: }
582:
583: sub RR_concept_plot {
584: my ($concepts,$foil_data,$title) = @_;
585: #
586: my %correct_by_concept;
587: my %incorrect_by_concept;
588: my %true;
589: foreach my $concept (@$concepts) {
590: foreach my $foil (@{$concept->{'foils'}}) {
591: next if (! exists($foil_data->{$foil}));
592: foreach my $choice (keys(%{$foil_data->{$foil}})) {
593: if ($choice eq $foil) {
594: $correct_by_concept{$concept->{'name'}} +=
595: $foil_data->{$foil}->{$choice};
596: } else {
597: $incorrect_by_concept{$concept->{'name'}} +=
598: $foil_data->{$foil}->{$choice};
599:
600: }
601: }
602: }
603: }
604: #
605: # need arrays for incorrect and correct because we want to use different
606: # colors for them
607: my @correct;
608: #
609: my $total =0;
610: for (my $i=0;$i<scalar(@$concepts);$i++) {
611: my $concept = $concepts->[$i];
612: $correct[$i] = $correct_by_concept{$concept->{'name'}};
613: $total += $correct_by_concept{$concept->{'name'}}+
614: $incorrect_by_concept{$concept->{'name'}};
615: }
616: if ($total == 0) { return ''; };
617: for (my $i=0;$i<=$#correct;$i++) {
618: $correct[$i] = sprintf('%0f',$correct[$i]/$total*100);
619: }
620: my $xlabel = 'concept';
621: my $plot= &Apache::loncommon::DrawBarGraph($title,
622: $xlabel,
623: 'Percent Choosing',
624: 100,
625: ['#33ff00','#ff3300'],
626: undef,
627: \@correct);
628: return $plot;
629: }
630:
631: sub RR_create_percent_selected_plot {
632: my ($concepts,$foils,$foil_data,$title) = @_;
633: #
634: if ($foil_data->{'_count'} == 0) { return ''; };
635: my %correct_selections;
636: my %incorrect_selections;
637: foreach my $foil (@$foils) {
638: # foil_data has format $foil_data->{true_foil}->{selected foil}=count
639: next if (! exists($foil_data->{$foil}));
640: while (my ($f,$count)= each(%{$foil_data->{$foil}})) {
641: if ($f eq $foil) {
642: $correct_selections{$foil} += $count;
643: } else {
644: $incorrect_selections{$f} += $count;
645: }
646: }
647: }
648: #
649: # need arrays for incorrect and correct because we want to use different
650: # colors for them
651: my @correct;
652: my @incorrect;
653: #
654: my $total = $foil_data->{'_count'};
655: for (my $i=0;$i<scalar(@$foils);$i++) {
656: my $foil = $foils->[$i];
657: $correct[$i] = $correct_selections{$foil};
658: $incorrect[$i] = $incorrect_selections{$foil};
659: }
660: for (my $i=0;$i<=$#correct;$i++) {
661: $correct[$i] = sprintf('%2f',$correct[$i]/$total*100);
662: }
663: for (my $i=0;$i<=$#incorrect;$i++) {
664: $incorrect[$i] = sprintf('%2f',$incorrect[$i]/$total*100);
665: }
666: #
667: # Put a blank in the data sets between concepts, if there are concepts
668: my @labels;
669: if (defined($concepts) && scalar(@$concepts) > 1) {
670: my @new_correct;
671: my @new_incorrect;
672: my $foil_count = 0;
673: foreach my $concept (@$concepts) {
674: foreach (@{$concept->{'foils'}}) {
675: push(@new_correct, $correct[$foil_count]);
676: push(@new_incorrect,$incorrect[$foil_count]);
677: push(@labels,++$foil_count);
678: }
679: push(@new_correct,'');
680: push(@new_incorrect,'');
681: push(@labels,'');
682: }
683: @correct = @new_correct;
684: @incorrect = @new_incorrect;
685: } else {
686: @labels = (1 .. scalar(@correct));
687: }
688: #
689: my $xlabel = 'foil chosen';
690: my $plot= &Apache::loncommon::DrawBarGraph($title,
691: $xlabel,
692: 'Percent Choosing',
693: 100,
694: ['#33ff00','#ff3300'],
695: \@labels,
696: \@correct,
697: \@incorrect);
698: return $plot;
699: }
700:
701: sub RR_create_stacked_selection_plot {
702: my ($foils,$foil_data,$title,$true_foils)=@_;
703: #
704: my @dataset; # array of array refs - multicolor rows $datasets[row]->[col]
705: my @labels;
706: my $count;
707: my %column; # maps foil name to column in @datasets
708: for (my $i=0;$i<scalar(@$foils);$i++) {
709: my $foil = $foils->[$i];
710: if (defined($true_foils) && scalar(keys(%$true_foils)) > 0 ) {
711: next if (! $true_foils->{$foil} );
712: push(@labels,$i+1);
713: } else {
714: next if (! exists($foil_data->{$foil}));
715: push(@labels,$i+1);
716: }
717: next if (! exists($foil_data->{$foils->[$i]}));
718: $column{$foil}= $count++;
719: for (my $j=0;$j<scalar(@$foils);$j++) {
720: my $value = 0;
721: if ($i != $j ) {
722: $value += $foil_data->{$foil}->{$foils->[$j]};
723: }
724: $dataset[$j]->[$column{$foil}]=$value;
725: }
726: }
727: #
728: return '' if (! scalar(keys(%column)));
729: #
730: my $grand_total = 0;
731: my %count_per_foil;
732: while (my ($foil,$bar) = each (%column)) {
733: my $bar_total = 0;
734: for (my $j=0;$j<scalar(@dataset);$j++) {
735: $bar_total += $dataset[$j]->[$bar];
736: }
737: next if ($bar_total == 0);
738: for (my $j=0;$j<scalar(@dataset);$j++) {
739: $dataset[$j]->[$bar] =
740: sprintf('%2f',$dataset[$j]->[$bar]/$bar_total * 100);
741: }
742: $count_per_foil{$foil}=' ( '.$bar_total.' )';
743: $grand_total += $bar_total;
744: }
745: if ($grand_total == 0) {
746: return ('',undef);
747: }
748: my @empty_row = ();
749: foreach (@{$dataset[0]}) {
750: push(@empty_row,0);
751: }
752: #
753: my $graph = &Apache::loncommon::DrawBarGraph
754: ($title,'Correct Foil','foils chosen Incorrectly',
755: 100,$plotcolors,\@labels,\@empty_row,@dataset);
756: return ($graph,\%count_per_foil);
757: }
758:
759: # if $correct is a hash ref, it is assumed to be indexed by student names.
760: # the values are assumed to be hash refs with a key of 'answer'.
761: sub RR_classify_response_data {
762: my ($full_row_data,$correct,$function) = @_;
763: my %submission_data;
764: foreach my $row (@$full_row_data) {
765: my %subm = &hashify_attempt($row);
766: if (ref($correct) eq 'HASH') {
767: $subm{'correct'} = $correct->{$subm{'student'}};
768: } else {
769: $subm{'correct'} = $correct;
770: }
771: $subm{'submission'} =~ s/=\d+\s*$//;
772: if (&$function(\%subm)) {
773: $submission_data{'_count'}++;
774: if (&submission_is_correct($subm{'award'})) {
775: $submission_data{'_correct'}++;
776: }
777: $submission_data{$subm{'correct'}}->{$subm{'submission'}}++;
778: }
779: }
780: return \%submission_data;
781: }
782:
783:
784: #########################################################
785: #########################################################
786: ##
787: ## Option Response Routines
788: ##
789: #########################################################
790: #########################################################
791: sub OptionResponseAnalysis {
792: my ($r,$problem,$problem_data,$Students) = @_;
793: my ($resource,$respid) = ($problem->{'resource'},
794: $problem->{'respid'});
795: # Note: part data is not needed.
796: my $PerformanceData = &Apache::loncoursedata::get_response_data
797: (\@Apache::lonstatistics::SelectedSections,
798: $Apache::lonstatistics::enrollment_status,
799: $resource->{'symb'},$respid);
800: if (! defined($PerformanceData) ||
801: ref($PerformanceData) ne 'ARRAY' ) {
802: $r->print('<h2>'.
803: &mt('There is no student data for this problem.').
804: '</h2>');
805: } else {
806: $r->rflush();
807: if (exists($ENV{'form.ExcelOutput'})) {
808: my $result = &OR_excel_sheet($r,$resource,
809: $PerformanceData,
810: $problem_data);
811: $r->print($result);
812: $r->rflush();
813: } else {
814: if ($ENV{'form.AnalyzeOver'} eq 'tries') {
815: my $analysis_html = &OR_tries_analysis($r,
816: $PerformanceData,
817: $problem_data);
818: $r->print($analysis_html);
819: $r->rflush();
820: } elsif ($ENV{'form.AnalyzeOver'} eq 'time') {
821: my $analysis_html = &OR_time_analysis($PerformanceData,
822: $problem_data);
823: $r->print($analysis_html);
824: $r->rflush();
825: } else {
826: $r->print('<h2>'.
827: &mt('The analysis you have selected is '.
828: 'not supported at this time').
829: '</h2>');
830: }
831: }
832: }
833: }
834:
835: #########################################################
836: #
837: # Option Response: tries Analysis
838: #
839: #########################################################
840: sub OR_tries_analysis {
841: my ($r,$PerformanceData,$ORdata) = @_;
842: my $mintries = 1;
843: my $maxtries = $ENV{'form.NumPlots'};
844: my ($table,$Foils,$Concepts) = &build_foil_index($ORdata);
845: my %response_data = &OR_analyze_by_tries($r,$PerformanceData,
846: $mintries,$maxtries);
847: my $analysis = '';
848: #
849: # Compute the data necessary to make the plots
850: my @foil_plot;
851: my @concept_data;
852: for (my $j=0;$j<=scalar(@$Concepts);$j++) {
853: my $concept = $Concepts->[$j];
854: foreach my $foilid (@{$concept->{'foils'}}) {
855: for (my $try=$mintries;$try<=$maxtries;$try++) {
856: # concept analysis data
857: $concept_data[$j]->[$try]->{'_correct'} +=
858: $response_data{$foilid}->[$try]->{'_correct'};
859: $concept_data[$j]->[$try]->{'_total'} +=
860: $response_data{$foilid}->[$try]->{'_total'};
861: #
862: # foil analysis data
863: if ($response_data{$foilid}->[$try]->{'_total'} == 0) {
864: push(@{$foil_plot[$try]->{'_correct'}},0);
865: } else {
866: push(@{$foil_plot[$try]->{'_correct'}},
867: 100*$response_data{$foilid}->[$try]->{'_correct'}/
868: $response_data{$foilid}->[$try]->{'_total'});
869: }
870: foreach my $option (@{$ORdata->{'_Options'}}) {
871: push(@{$foil_plot[$try]->{'_total'}},
872: $response_data{$foilid}->[$try]->{'_total'});
873: if ($response_data{$foilid}->[$try]->{'_total'} == 0) {
874: push (@{$foil_plot[$try]->{$option}},0);
875: } else {
876: if ($response_data{$foilid}->[$try]->{'_total'} ==
877: $response_data{$foilid}->[$try]->{'_correct'}) {
878: push(@{$foil_plot[$try]->{$option}},0);
879: } else {
880: push (@{$foil_plot[$try]->{$option}},
881: 100 *
882: $response_data{$foilid}->[$try]->{$option} /
883: ($response_data{$foilid}->[$try]->{'_total'}
884: -
885: $response_data{$foilid}->[$try]->{'_correct'}
886: ));
887: }
888: }
889: } # End of foreach my $option
890: }
891: } # End of foreach my $foilid
892: } # End of concept loops
893: #
894: # Build a table for the plots
895: my $analysis_html = "<br /><table>\n";
896: my $optionkey = &build_option_index($ORdata);
897: my $num_concepts = 1;
898: if (defined($Concepts)) { $num_concepts = scalar(@$Concepts); }
899: #
900: for (my $try=$mintries;$try<=$maxtries;$try++) {
901: if (! defined($response_data{'_total'}->[$try]) ||
902: $response_data{'_total'}->[$try] == 0) {
903: if ($try > 1) {
904: $analysis_html.= '<tr><td align="center" colspan="4"><b>'.
905: &mt('None of the selected students attempted the problem more than [_1] times.',$try-1).
906: '</b></td></tr>';
907: } else {
908: $analysis_html.= '<tr><td colspan="4" align="center"><b>'.
909: &mt('None of the selected students have attempted the problem').'</b></td></tr>';
910: }
911: last;
912: }
913: my $concept_graph='';
914: if ($num_concepts > 1) {
915: #
916: # Create concept plot
917: my @concept_plot_data;
918: for (my $j=0;$j<=$#concept_data;$j++) {
919: my $total = $concept_data[$j]->[$try]->{'_total'};
920: if ($total == 0) {
921: $concept_plot_data[$j] = 0;
922: } else {
923: $concept_plot_data[$j] = 100 *
924: sprintf('%0.3f',
925: $concept_data[$j]->[$try]->{'_correct'} /
926: $total);
927: }
928: }
929: #
930: $concept_graph = &Apache::loncommon::DrawBarGraph
931: ('Correct Concepts','Concept Number','Percent Correct',
932: 100,$plotcolors,undef,\@concept_plot_data);
933: }
934: #
935: # Create Foil Plots
936: my $data_count = $response_data{'_total'}->[$try];
937: my $correct = $response_data{'_correct'}->[$try];
938: my @Datasets;
939: foreach my $option ('_correct',@{$ORdata->{'_Options'}}) {
940: next if (! exists($foil_plot[$try]->{$option}));
941: push(@Datasets,$foil_plot[$try]->{$option});
942: }
943: #
944: # Put a blank in the data set between concepts
945: for (my $set =0;$set<=$#Datasets;$set++) {
946: my @Data = @{$Datasets[$set]};
947: my $idx = 0;
948: foreach my $concept (@{$Concepts}) {
949: foreach my $foilid (@{$concept->{'foils'}}) {
950: $Datasets[$set]->[$idx++]=shift(@Data);
951: }
952: if ($concept->{'name'} ne $Concepts->[-1]->{'name'}) {
953: $Datasets[$set]->[$idx++] = 0;
954: }
955: }
956: }
957: #
958: # Set up the labels needed for the bar graph
959: my @Labels;
960: my $idx = 1;
961: foreach my $concept (@{$Concepts}) {
962: foreach my $foilid (@{$concept->{'foils'}}) {
963: push(@Labels,$idx++);
964: }
965: push(@Labels,'');
966: }
967: #
968: my $correct_graph = &Apache::loncommon::DrawBarGraph
969: ('Correct Statements','Statement','% Answered Correct',
970: 100,$plotcolors,\@Labels,$Datasets[0]);
971:
972: #
973: #
974: next if (! defined($Datasets[0]));
975: for (my $i=0; $i< scalar(@{$Datasets[0]});$i++) {
976: $Datasets[0]->[$i]=0;
977: }
978: my $count = $response_data{'_total'}->[$try] -
979: $response_data{'_correct'}->[$try];
980: my $incorrect_graph = &Apache::loncommon::DrawBarGraph
981: ('Incorrect Statements','Statement','% Chosen Incorrectly',
982: 100,$plotcolors,\@Labels,@Datasets);
983: $analysis_html.=
984: '<tr><td colspan="4" align="center">'.
985: '<font size="+1">'.
986: &mt('Attempt [_1], [_2] submissions, [_3] correct, [_4] incorrect',
987: $try,$data_count,$correct,$data_count-$correct).
988: '</font>'.'</td></tr>'.$/.
989: '<tr>'.
990: '<td>'.$concept_graph.'</td>'.
991: '<td>'.$correct_graph.'</td>'.
992: '<td>'.$incorrect_graph.'</td>'.
993: '<td>'.$optionkey.'<td>'.
994: '</tr>'.$/;
995: }
996: $analysis_html .= "</table>\n";
997: $table .= $analysis_html;
998: return $table;
999: }
1000:
1001: sub OR_analyze_by_tries {
1002: my ($r,$PerformanceData,$mintries,$maxtries) = @_;
1003: my %Trydata;
1004: $mintries = 1 if (! defined($mintries) || $mintries < 1);
1005: $maxtries = $mintries if (! defined($maxtries) || $maxtries < $mintries);
1006: my @students;
1007: foreach my $row (@$PerformanceData) {
1008: next if (! defined($row));
1009: my $tries = &get_tries_from_row($row);
1010: my %Row = &Process_OR_Row($row);
1011: next if (! %Row);
1012: my $student_id = $row->[&Apache::loncoursedata::RD_student_id()];
1013: $students[$tries]->{$student_id}++;
1014: while (my ($foilid,$href) = each(%Row)) {
1015: if (! ref($href)) {
1016: $Trydata{$foilid}->[$tries] += $href;
1017: next;
1018: }
1019: while (my ($option,$value) = each(%$href)) {
1020: $Trydata{$foilid}->[$tries]->{$option}+=$value;
1021: }
1022: }
1023: }
1024: for (my $try=$mintries;$try<=$maxtries;$try++) {
1025: $Trydata{'_studentcount'}->[$try] = scalar(keys(%{$students[$try]}));
1026: }
1027: return %Trydata;
1028: }
1029:
1030: #########################################################
1031: #
1032: # Option Response: Time Analysis
1033: #
1034: #########################################################
1035: sub OR_time_analysis {
1036: my ($performance_data,$ORdata) = @_;
1037: my ($table,$Foils,$Concepts) = &build_foil_index($ORdata);
1038: my $foilkey = &build_option_index($ORdata);
1039: my $num_concepts = 1;
1040: if (defined($Concepts)) { $num_concepts = scalar(@$Concepts); }
1041: #
1042: if ($num_concepts < 2) {
1043: $table = '<h3>'.
1044: &mt('Not enough data for concept analysis. '.
1045: 'Performing Foil Analysis').
1046: '</h3>'.$table;
1047: }
1048: #
1049: my $num_plots = $ENV{'form.NumPlots'};
1050: my $num_data = scalar(@$performance_data)-1;
1051: #
1052: my $current_index;
1053: $table .= "<table>\n";
1054: for (my $i=0;$i<$num_plots;$i++) {
1055: ##
1056: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
1057: ('startdate_'.$i);
1058: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
1059: ('enddate_'.$i);
1060: if (! defined($starttime) || ! defined($endtime)) {
1061: my $sec_in_day = 86400;
1062: my $last_sub_time = &get_time_from_row($performance_data->[-1]);
1063: my ($sday,$smon,$syear) =
1064: (localtime($last_sub_time - $sec_in_day*$i))[3..5];
1065: $starttime = &Time::Local::timelocal(0,0,0,$sday,$smon,$syear);
1066: $endtime = $starttime + $sec_in_day;
1067: if ($i == ($num_plots -1 )) {
1068: $starttime = &get_time_from_row($performance_data->[0]);
1069: }
1070: }
1071: $table .= '<tr><td colspan="4" align="center"><font size="+1">'.
1072: &mt('Data from [_1] to [_2]',
1073: &Apache::lonlocal::locallocaltime($starttime),
1074: &Apache::lonlocal::locallocaltime($endtime)).
1075: '</font></td></tr>'.$/;
1076: my $startdateform = &Apache::lonhtmlcommon::date_setter
1077: ('Statistics','startdate_'.$i,$starttime);
1078: my $enddateform = &Apache::lonhtmlcommon::date_setter
1079: ('Statistics','enddate_'.$i,$endtime);
1080: #
1081: my $begin_index;
1082: my $end_index;
1083: my $j;
1084: while (++$j < scalar(@$performance_data)) {
1085: last if (&get_time_from_row($performance_data->[$j])
1086: > $starttime);
1087: }
1088: $begin_index = $j;
1089: while ($j < scalar(@$performance_data)) {
1090: if (&get_time_from_row($performance_data->[$j]) > $endtime) {
1091: last;
1092: } else {
1093: $j++;
1094: }
1095: }
1096: $end_index = $j;
1097: ##
1098: my ($processed_time_data,$correct,$data_count,$student_count) =
1099: &OR_time_process_data($performance_data,$begin_index,$end_index);
1100: ##
1101: $table .= '<tr><td colspan="4" align="center"><font size="+1">'.
1102: &mt('[_1] submissions from [_2] students submitting, [_3] correct, [_4] incorrect',
1103: $data_count,$student_count,$correct,$data_count-$correct).
1104: '</font></td></tr>'.$/;
1105: my $concept_correct_plot = '';
1106: if ($num_concepts > 1) {
1107: $concept_correct_plot =
1108: &OR_Concept_Time_Analysis($processed_time_data,
1109: $correct,$data_count,$student_count,
1110: $ORdata,$Concepts);
1111: }
1112: my ($foil_correct_plot,$foil_incorrect_plot) =
1113: &OR_Foil_Time_Analysis($processed_time_data,
1114: $correct,$data_count,$student_count,
1115: $ORdata,$Foils,$Concepts);
1116: $table .= '<tr>'.
1117: '<td>'.$concept_correct_plot.'</td>'.
1118: '<td>'.$foil_correct_plot.'</td>'.
1119: '<td>'.$foil_incorrect_plot.'</td>'.
1120: '<td align="left" valign="top">'.$foilkey.'</td></tr>'.$/;
1121: $table .= '<tr><td colspan="4" align="center">'.
1122: &mt('Start time: [_1]',$startdateform).'<br />'.
1123: &mt('End time: [_1]',$enddateform).'</td></tr>'.$/;
1124: $table.= '<tr><td colspan="4"> </td></tr>'.$/;
1125: }
1126: $table .= '</table>';
1127: #
1128: return $table;
1129: }
1130:
1131: sub OR_Foil_Time_Analysis {
1132: my ($processed_time_data,$correct,$data_count,$student_count,
1133: $ORdata,$Foils,$Concepts) = @_;
1134: if ($data_count <= 0) {
1135: return ('<h2>'.&mt('There is no data to plot').'</h2>','');
1136: }
1137: my $analysis_html;
1138: my @plotdata;
1139: my @labels;
1140: foreach my $concept (@{$Concepts}) {
1141: foreach my $foil (@{$concept->{'foils'}}) {
1142: push(@labels,scalar(@labels)+1);
1143: my $total = $processed_time_data->{$foil}->{'_total'};
1144: if ($total == 0) {
1145: push(@{$plotdata[0]},0);
1146: } else {
1147: push(@{$plotdata[0]},
1148: 100 * $processed_time_data->{$foil}->{'_correct'} / $total);
1149: }
1150: my $total_incorrect = $total - $processed_time_data->{$foil}->{'_correct'};
1151: for (my $i=0;$i<scalar(@{$ORdata->{'_Options'}});$i++) {
1152: my $option = $ORdata->{'_Options'}->[$i];
1153: if ($total_incorrect == 0) {
1154: push(@{$plotdata[$i+1]},0);
1155: } else {
1156: push(@{$plotdata[$i+1]},
1157: 100 * $processed_time_data->{$foil}->{$option} / $total_incorrect);
1158: }
1159: }
1160: }
1161: # Put in a blank one
1162: push(@labels,'');
1163: push(@{$plotdata[0]},0);
1164: for (my $i=0;$i<scalar(@{$ORdata->{'_Options'}});$i++) {
1165: push(@{$plotdata[$i+1]},0);
1166: }
1167: }
1168: #
1169: # Create the plot
1170: my $correct_plot = &Apache::loncommon::DrawBarGraph('Correct Statements',
1171: 'Statement Number',
1172: 'Percent Correct',
1173: 100,
1174: $plotcolors,
1175: undef,
1176: $plotdata[0]);
1177: for (my $j=0; $j< scalar(@{$plotdata[0]});$j++) {
1178: $plotdata[0]->[$j]=0;
1179: }
1180: my $incorrect_plot =
1181: &Apache::loncommon::DrawBarGraph('Incorrect Statements',
1182: 'Statement Number',
1183: 'Incorrect Option Choice',
1184: 100,
1185: $plotcolors,
1186: undef,
1187: @plotdata);
1188: return ($correct_plot,$incorrect_plot);
1189: }
1190:
1191: sub OR_Concept_Time_Analysis {
1192: my ($processed_time_data,$correct,$data_count,$student_count,
1193: $ORdata,$Concepts) = @_;
1194: return '' if ($data_count == 0);
1195: #
1196: # Put the data in plottable form
1197: my @plotdata;
1198: foreach my $concept (@$Concepts) {
1199: my ($total,$correct);
1200: foreach my $foil (@{$concept->{'foils'}}) {
1201: $total += $processed_time_data->{$foil}->{'_total'};
1202: $correct += $processed_time_data->{$foil}->{'_correct'};
1203: }
1204: if ($total == 0) {
1205: push(@plotdata,0);
1206: } else {
1207: push(@plotdata,100 * $correct / $total);
1208: }
1209: }
1210: #
1211: # Create the plot
1212: return &Apache::loncommon::DrawBarGraph('Correct Concepts',
1213: 'Concept Number',
1214: 'Percent Correct',
1215: 100,
1216: $plotcolors,
1217: undef,
1218: \@plotdata);
1219: }
1220:
1221: sub OR_time_process_data {
1222: my ($performance_data,$begin_index,$end_index)=@_;
1223: my %processed_time_data;
1224: my %distinct_students;
1225: my ($correct,$data_count);
1226: if (($begin_index == $end_index) &&
1227: ($end_index != scalar(@$performance_data)-1)) {
1228: return undef;
1229: }
1230: # Be sure we include the last one if we are asked for it.
1231: # That we have to correct here (and not when $end_index is
1232: # given a value) should probably be considered a bug.
1233: if ($end_index == scalar(@$performance_data)-1) {
1234: $end_index++;
1235: }
1236: my $count;
1237: for (my $i=$begin_index;$i<$end_index;$i++) {
1238: my $attempt = $performance_data->[$i];
1239: $count++;
1240: next if (! defined($attempt));
1241: my %attempt = &Process_OR_Row($attempt);
1242: $data_count++;
1243: $correct += $attempt{'_correct'};
1244: $distinct_students{$attempt->[&Apache::loncoursedata::RD_student_id()]}++;
1245: while (my ($foilid,$href) = each(%attempt)) {
1246: if (! ref($href)) {
1247: $processed_time_data{$foilid} += $href;
1248: next;
1249: }
1250: while (my ($option,$value) = each(%$href)) {
1251: $processed_time_data{$foilid}->{$option}+=$value;
1252: }
1253: }
1254: }
1255: return (\%processed_time_data,$correct,$data_count,
1256: scalar(keys(%distinct_students)));
1257: }
1258:
1259: #########################################################
1260: #########################################################
1261: ##
1262: ## Excel output
1263: ##
1264: #########################################################
1265: #########################################################
1266: sub OR_excel_sheet {
1267: my ($r,$resource,$performance_data,$ORdata) = @_;
1268: my $response = '';
1269: my (undef,$Foils,$Concepts) = &build_foil_index($ORdata);
1270: #
1271: # Create excel worksheet
1272: my $filename = '/prtspool/'.
1273: $ENV{'user.name'}.'_'.$ENV{'user.domain'}.'_'.
1274: time.'_'.rand(1000000000).'.xls';
1275: my $workbook = Spreadsheet::WriteExcel->new('/home/httpd'.$filename);
1276: if (! defined($workbook)) {
1277: $r->log_error("Error creating excel spreadsheet $filename: $!");
1278: $r->print('<p>'.&mt("Unable to create new Excel file. ".
1279: "This error has been logged. ".
1280: "Please alert your LON-CAPA administrator").
1281: '</p>');
1282: return undef;
1283: }
1284: #
1285: $workbook->set_tempdir('/home/httpd/perl/tmp');
1286: my $format = &Apache::loncommon::define_excel_formats($workbook);
1287: #
1288: # Create and populate main worksheets
1289: my $problem_data_sheet = $workbook->addworksheet('Problem Data');
1290: my $student_data_sheet = &build_student_data_worksheet($workbook,$format);
1291: my $response_data_sheet = $workbook->addworksheet('Response Data');
1292: foreach my $sheet ($problem_data_sheet,$student_data_sheet,
1293: $response_data_sheet) {
1294: $sheet->write(0,0,$resource->{'title'},$format->{'h2'});
1295: $sheet->write(1,0,$resource->{'src'},$format->{'h3'});
1296: }
1297: #
1298: my $result;
1299: $result = &OR_build_problem_data_worksheet($problem_data_sheet,$format,
1300: $Concepts,$ORdata);
1301: if ($result ne 'okay') {
1302: # Do something useful
1303: }
1304: $result = &OR_build_response_data_worksheet($response_data_sheet,$format,
1305: $performance_data,$Foils,
1306: $ORdata);
1307: if ($result ne 'okay') {
1308: # Do something useful
1309: }
1310: $response_data_sheet->activate();
1311: #
1312: # Close the excel file
1313: $workbook->close();
1314: #
1315: # Write a link to allow them to download it
1316: $result .= '<h2>'.&mt('Excel Raw Data Output').'</h2>'.
1317: '<p><a href="'.$filename.'">'.
1318: &mt('Your Excel spreadsheet.').
1319: '</a></p>'."\n";
1320: return $result;
1321: }
1322:
1323: sub OR_build_problem_data_worksheet {
1324: my ($worksheet,$format,$Concepts,$ORdata) = @_;
1325: my $rows_output = 3;
1326: my $cols_output = 0;
1327: $worksheet->write($rows_output++,0,'Problem Structure',$format->{'h3'});
1328: ##
1329: ##
1330: my @Headers;
1331: if (@$Concepts > 1) {
1332: @Headers = ("Concept\nNumber",'Concept',"Foil\nNumber",
1333: 'Foil Name','Foil Text','Correct value');
1334: } else {
1335: @Headers = ('Foil Number','FoilName','Foil Text','Correct value');
1336: }
1337: $worksheet->write_row($rows_output++,0,\@Headers,$format->{'header'});
1338: my %Foildata = %{$ORdata->{'_Foils'}};
1339: my $conceptindex = 1;
1340: my $foilindex = 1;
1341: foreach my $concept (@$Concepts) {
1342: my @FoilsInConcept = @{$concept->{'foils'}};
1343: my $firstfoil = shift(@FoilsInConcept);
1344: if (@$Concepts > 1) {
1345: $worksheet->write_row($rows_output++,0,
1346: [$conceptindex,
1347: $concept->{'name'},
1348: $foilindex++,
1349: $Foildata{$firstfoil}->{'name'},
1350: $Foildata{$firstfoil}->{'text'},
1351: $Foildata{$firstfoil}->{'value'},]);
1352: } else {
1353: $worksheet->write_row($rows_output++,0,
1354: [ $foilindex++,
1355: $Foildata{$firstfoil}->{'name'},
1356: $Foildata{$firstfoil}->{'text'},
1357: $Foildata{$firstfoil}->{'value'},]);
1358: }
1359: foreach my $foilid (@FoilsInConcept) {
1360: if (@$Concepts > 1) {
1361: $worksheet->write_row($rows_output++,0,
1362: ['',
1363: '',
1364: $foilindex,
1365: $Foildata{$foilid}->{'name'},
1366: $Foildata{$foilid}->{'text'},
1367: $Foildata{$foilid}->{'value'},]);
1368: } else {
1369: $worksheet->write_row($rows_output++,0,
1370: [$foilindex,
1371: $Foildata{$foilid}->{'name'},
1372: $Foildata{$foilid}->{'text'},
1373: $Foildata{$foilid}->{'value'},]);
1374: }
1375: } continue {
1376: $foilindex++;
1377: }
1378: } continue {
1379: $conceptindex++;
1380: }
1381: $rows_output++;
1382: $rows_output++;
1383: ##
1384: ## Option data output
1385: $worksheet->write($rows_output++,0,'Options',$format->{'header'});
1386: foreach my $string (@{$ORdata->{'_Options'}}) {
1387: $worksheet->write($rows_output++,0,$string);
1388: }
1389: return 'okay';
1390: }
1391:
1392: sub OR_build_response_data_worksheet {
1393: my ($worksheet,$format,$performance_data,$Foils,$ORdata)=@_;
1394: my $rows_output = 3;
1395: my $cols_output = 0;
1396: $worksheet->write($rows_output++,0,'Response Data',$format->{'h3'});
1397: $worksheet->set_column(1,1,20);
1398: $worksheet->set_column(2,2,13);
1399: my @Headers = ('identifier','time','award detail','attempt');
1400: foreach my $foil (@$Foils) {
1401: push (@Headers,$foil.' submission');
1402: push (@Headers,$foil.' grading');
1403: }
1404: $worksheet->write_row($rows_output++,0,\@Headers,$format->{'header'});
1405: #
1406: foreach my $row (@$performance_data) {
1407: next if (! defined($row));
1408: my ($student,$award,$grading,$submission,$time,$tries) = @$row;
1409: my @Foilgrades = split('&',$grading);
1410: my @Foilsubs = split('&',$submission);
1411: my %response_data;
1412: for (my $j=0;$j<=$#Foilgrades;$j++) {
1413: my ($foilid,$correct) = split('=',$Foilgrades[$j]);
1414: my (undef,$submission) = split('=',$Foilsubs[$j]);
1415: $submission = &Apache::lonnet::unescape($submission);
1416: $response_data{$foilid.' submission'}=$submission;
1417: $response_data{$foilid.' award'}=$correct;
1418: }
1419: $worksheet->write($rows_output,$cols_output++,$student);
1420: $worksheet->write($rows_output,$cols_output++,
1421: &Apache::lonstathelpers::calc_serial($time),$format->{'date'});
1422: $worksheet->write($rows_output,$cols_output++,$award);
1423: $worksheet->write($rows_output,$cols_output++,$tries);
1424: foreach my $foilid (@$Foils) {
1425: $worksheet->write($rows_output,$cols_output++,
1426: $response_data{$foilid.' submission'});
1427: $worksheet->write($rows_output,$cols_output++,
1428: $response_data{$foilid.' award'});
1429: }
1430: $rows_output++;
1431: $cols_output = 0;
1432: }
1433: return;
1434: }
1435:
1436: sub build_foil_index {
1437: my ($ORdata) = @_;
1438: return if (! exists($ORdata->{'_Foils'}));
1439: my %Foildata = %{$ORdata->{'_Foils'}};
1440: my @Foils = sort(keys(%Foildata));
1441: my %Concepts;
1442: foreach my $foilid (@Foils) {
1443: push(@{$Concepts{$Foildata{$foilid}->{'_Concept'}}},
1444: $foilid);
1445: }
1446: undef(@Foils);
1447: # Having gathered the concept information in a hash, we now translate it
1448: # into an array because we need to be consistent about order.
1449: # Also put the foils in order, too.
1450: my $sortfunction = sub {
1451: my %Numbers = (one => 1,
1452: two => 2,
1453: three => 3,
1454: four => 4,
1455: five => 5,
1456: six => 6,
1457: seven => 7,
1458: eight => 8,
1459: nine => 9,
1460: ten => 10,);
1461: my $a1 = lc($a);
1462: my $b1 = lc($b);
1463: if (exists($Numbers{$a1})) {
1464: $a1 = $Numbers{$a1};
1465: }
1466: if (exists($Numbers{$b1})) {
1467: $b1 = $Numbers{$b1};
1468: }
1469: if (($a1 =~/^\d+$/) && ($b1 =~/^\d+$/)) {
1470: return $a1 <=> $b1;
1471: } else {
1472: return $a1 cmp $b1;
1473: }
1474: };
1475: my @Concepts;
1476: foreach my $concept (sort $sortfunction (keys(%Concepts))) {
1477: if (! defined($Concepts{$concept})) {
1478: $Concepts{$concept}=[];
1479: # next;
1480: }
1481: push(@Concepts,{ name => $concept,
1482: foils => [@{$Concepts{$concept}}]});
1483: push(@Foils,(@{$Concepts{$concept}}));
1484: }
1485: #
1486: # Build up the table of row labels.
1487: my $table = '<table border="1" >'."\n";
1488: if (@Concepts > 1) {
1489: $table .= '<tr>'.
1490: '<th>'.&mt('Concept Number').'</th>'.
1491: '<th>'.&mt('Concept').'</th>'.
1492: '<th>'.&mt('Foil Number').'</th>'.
1493: '<th>'.&mt('Foil Name').'</th>'.
1494: '<th>'.&mt('Foil Text').'</th>'.
1495: '<th>'.&mt('Correct Value').'</th>'.
1496: "</tr>\n";
1497: } else {
1498: $table .= '<tr>'.
1499: '<th>'.&mt('Foil Number').'</th>'.
1500: '<th>'.&mt('Foil Name').'</th>'.
1501: '<th>'.&mt('Foil Text').'</th>'.
1502: '<th>'.&mt('Correct Value').'</th>'.
1503: "</tr>\n";
1504: }
1505: my $conceptindex = 1;
1506: my $foilindex = 1;
1507: foreach my $concept (@Concepts) {
1508: my @FoilsInConcept = @{$concept->{'foils'}};
1509: my $firstfoil = shift(@FoilsInConcept);
1510: if (@Concepts > 1) {
1511: $table .= '<tr>'.
1512: '<td>'.$conceptindex.'</td>'.
1513: '<td>'.&HTML::Entities::encode($concept->{'name'},'<>&"').'</td>'.
1514: '<td>'.$foilindex++.'</td>'.
1515: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'name'},'<>&"').'</td>'.
1516: '<td>'.$Foildata{$firstfoil}->{'text'}.'</td>'.
1517: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'value'},'<>&"').'</td>'.
1518: "</tr>\n";
1519: } else {
1520: $table .= '<tr>'.
1521: '<td>'.$foilindex++.'</td>'.
1522: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'name'},'<>&"').'</td>'.
1523: '<td>'.$Foildata{$firstfoil}->{'text'}.'</td>'.
1524: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'value'},'<>&"').'</td>'.
1525: "</tr>\n";
1526: }
1527: foreach my $foilid (@FoilsInConcept) {
1528: if (@Concepts > 1) {
1529: $table .= '<tr>'.
1530: '<td></td>'.
1531: '<td></td>'.
1532: '<td>'.$foilindex.'</td>'.
1533: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'name'},'<>&"').'</td>'.
1534: '<td>'.$Foildata{$foilid}->{'text'}.'</td>'.
1535: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'value'},'<>&"').'</td>'.
1536: "</tr>\n";
1537: } else {
1538: $table .= '<tr>'.
1539: '<td>'.$foilindex.'</td>'.
1540: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'name'},'<>&"').'</td>'.
1541: '<td>'.$Foildata{$foilid}->{'text'}.'</td>'.
1542: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'value'},'<>&"').'</td>'.
1543: "</tr>\n";
1544: }
1545: } continue {
1546: $foilindex++;
1547: }
1548: } continue {
1549: $conceptindex++;
1550: }
1551: $table .= "</table>\n";
1552: #
1553: # Build option index with color stuff
1554: return ($table,\@Foils,\@Concepts);
1555: }
1556:
1557: sub build_option_index {
1558: my ($ORdata)= @_;
1559: my $table = "<table>\n";
1560: my $optionindex = 0;
1561: my @Rows;
1562: foreach my $option (&mt('correct option chosen'),@{$ORdata->{'_Options'}}) {
1563: my $color = $plotcolors->[$optionindex++];
1564: push (@Rows,
1565: '<tr>'.
1566: '<td bgcolor="'.$color.'">'.
1567: '<font color="'.$color.'">'.('*'x3).'</font>'.'</td>'.
1568: '<td>'.&HTML::Entities::encode($option,'<>&"').'</td>'.
1569: "</tr>\n");
1570: }
1571: shift(@Rows); # Throw away 'correct option chosen' color
1572: $table .= join('',reverse(@Rows));
1573: $table .= "</table>\n";
1574: }
1575:
1576: sub build_foil_key {
1577: my ($foils,$extra_data)= @_;
1578: if (! defined($extra_data)) { $extra_data = {}; }
1579: my $table = "<table>\n";
1580: my $foil_index = 0;
1581: my @rows;
1582: foreach my $foil (&mt('correct foil chosen'),@{$foils}) {
1583: my $color = $plotcolors->[$foil_index++];
1584: push (@rows,
1585: '<tr>'.
1586: '<td bgcolor="'.$color.'" class="key">'.
1587: '<font color="'.$color.'">'.('*'x4).'</font></td>'.
1588: '<td>'.&HTML::Entities::encode($foil,'<>&"').
1589: (' 'x2).$extra_data->{$foil}.'</td>'.
1590: "</tr>\n");
1591: }
1592: shift(@rows); # Throw away 'correct foil chosen' color
1593: $table .= join('',reverse(@rows));
1594: $table .= "</table>\n";
1595: }
1596:
1597: #########################################################
1598: #########################################################
1599: ##
1600: ## Generic Interface Routines
1601: ##
1602: #########################################################
1603: #########################################################
1604: sub CreateInterface {
1605: ##
1606: ## Environment variable initialization
1607: if (! exists$ENV{'form.AnalyzeOver'}) {
1608: $ENV{'form.AnalyzeOver'} = 'tries';
1609: }
1610: ##
1611: ## Build the menu
1612: my $Str = '';
1613: $Str .= &Apache::lonhtmlcommon::breadcrumbs
1614: (undef,'Detailed Problem Analysis');
1615: $Str .= '<table cellspacing="5">'."\n";
1616: $Str .= '<tr>';
1617: $Str .= '<td align="center"><b>'.&mt('Sections').'</b></td>';
1618: $Str .= '<td align="center"><b>'.&mt('Enrollment Status').'</b></td>';
1619: # $Str .= '<td align="center"><b>'.&mt('Sequences and Folders').'</b></td>';
1620: $Str .= '<td align="center"> </td>';
1621: $Str .= '</tr>'."\n";
1622: ##
1623: ##
1624: $Str .= '<tr><td align="center">'."\n";
1625: $Str .= &Apache::lonstatistics::SectionSelect('Section','multiple',5);
1626: $Str .= '</td>';
1627: #
1628: $Str .= '<td align="center">';
1629: $Str .= &Apache::lonhtmlcommon::StatusOptions(undef,undef,5);
1630: $Str .= '</td>';
1631: #
1632: # $Str .= '<td align="center">';
1633: my $only_seq_with_assessments = sub {
1634: my $s=shift;
1635: if ($s->{'num_assess'} < 1) {
1636: return 0;
1637: } else {
1638: return 1;
1639: }
1640: };
1641: &Apache::lonstatistics::MapSelect('Maps','multiple,all',5,
1642: $only_seq_with_assessments);
1643: ##
1644: ##
1645: $Str .= '<td>';
1646: ##
1647: my $showprob_checkbox =
1648: '<input type="checkbox" name="show_prob" value="true" ';
1649: if ($ENV{'form.show_prob'} eq 'true') {
1650: $showprob_checkbox .= 'checked ';
1651: }
1652: $showprob_checkbox.= ' />';
1653: $Str.= '<nobr><label>'.
1654: &mt('Show problem [_1]',$showprob_checkbox).
1655: '</label></nobr><br />';
1656: ##
1657: my $analyze_selector = '<select name="AnalyzeOver" >';
1658: $analyze_selector .= '<option value="tries" ';
1659: if (! exists($ENV{'form.AnalyzeOver'}) ||
1660: $ENV{'form.AnalyzeOver'} eq 'tries'){
1661: # Default to tries
1662: $analyze_selector .= ' selected ';
1663: }
1664: $analyze_selector .= '>'.&mt('Tries').'</option>';
1665: $analyze_selector .= '<option value="time" ';
1666: $analyze_selector .= ' selected ' if ($ENV{'form.AnalyzeOver'} eq 'time');
1667: $analyze_selector .= '>'.&mt('Time').'</option>';
1668: $analyze_selector .= '</select>';
1669: $Str .= '<nobr><label>'.
1670: &mt('Analyze Over [_1] [_2]',
1671: $analyze_selector,
1672: &Apache::loncommon::help_open_topic('Analysis_Analyze_Over')).
1673: '</label></nobr><br />'.$/;
1674: ##
1675: my $numplots_selector = '<select name="NumPlots">';
1676: if (! exists($ENV{'form.NumPlots'})
1677: || $ENV{'form.NumPlots'} < 1
1678: || $ENV{'form.NumPlots'} > 20) {
1679: $ENV{'form.NumPlots'} = 5;
1680: }
1681: foreach my $i (1,2,3,4,5,6,7,8,10,15,20) {
1682: $numplots_selector .= '<option value="'.$i.'" ';
1683: if ($ENV{'form.NumPlots'} == $i) { $numplots_selector.=' selected '; }
1684: $numplots_selector .= '>'.$i.'</option>';
1685: }
1686: $numplots_selector .= '</select></nobr><br />';
1687: $Str .= '<nobr><label>'.&mt('Number of Plots [_1]',$numplots_selector).
1688: '</label></nobr>';
1689: ##
1690: $Str .= '<nobr><label>'.&mt('Status: [_1]',
1691: '<input type="text" '.
1692: 'name="stats_status" size="60" value="" />'
1693: ).
1694: '</label></nobr>';
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{'student'} = $row->[&Apache::loncoursedata::RD_sname()];
1730: $attempt{'tries'} = $row->[&Apache::loncoursedata::RD_tries()];
1731: $attempt{'submission'} = &Apache::lonnet::unescape($row->[&Apache::loncoursedata::RD_submission()]);
1732: $attempt{'award'} = $row->[&Apache::loncoursedata::RD_awarddetail()];
1733: $attempt{'timestamp'} = $row->[&Apache::loncoursedata::RD_timestamp()];
1734: return %attempt;
1735: }
1736:
1737: sub Process_OR_Row {
1738: my ($row) = @_;
1739: my %RowData;
1740: # my $student_id = $row->[&Apache::loncoursedata::RD_student_id()];
1741: my $award = $row->[&Apache::loncoursedata::RD_awarddetail()];
1742: my $grading = $row->[&Apache::loncoursedata::RD_response_eval()];
1743: my $submission = $row->[&Apache::loncoursedata::RD_submission()];
1744: my $time = $row->[&Apache::loncoursedata::RD_timestamp()];
1745: # my $tries = $row->[&Apache::loncoursedata::RD_tries()];
1746: return undef if ($award eq 'MISSING_ANSWER');
1747: if (&submission_is_correct($award)) {
1748: $RowData{'_correct'} = 1;
1749: }
1750: $RowData{'_total'} = 1;
1751: my @Foilgrades = split('&',$grading);
1752: my @Foilsubs = split('&',$submission);
1753: for (my $j=0;$j<=$#Foilgrades;$j++) {
1754: my ($foilid,$correct) = split('=',$Foilgrades[$j]);
1755: $foilid = &Apache::lonnet::unescape($foilid);
1756: my (undef,$submission) = split('=',$Foilsubs[$j]);
1757: if ($correct) {
1758: $RowData{$foilid}->{'_correct'}++;
1759: } else {
1760: $submission = &Apache::lonnet::unescape($submission);
1761: $RowData{$foilid}->{$submission}++;
1762: }
1763: $RowData{$foilid}->{'_total'}++;
1764: }
1765: return %RowData;
1766: }
1767:
1768: sub submission_is_correct {
1769: my ($award) = @_;
1770: if ($award =~ /(APPROX_ANS|EXACT_ANS)/) {
1771: return 1;
1772: } else {
1773: return 0;
1774: }
1775: }
1776:
1777: 1;
1778:
1779: __END__
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