1: # The LearningOnline Network with CAPA
2: #
3: # $Id: lonproblemanalysis.pm,v 1.98 2004/10/29 15:52:32 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: my %foil_selections;
635: my %true;
636: foreach my $foil (@$foils) {
637: # foil_data has format $foil_data->{true_foil}->{selected foil}
638: next if (! exists($foil_data->{$foil}));
639: $true{$foil}++;
640: while (my ($f,$count)= each(%{$foil_data->{$foil}})) {
641: $foil_selections{$f}+=$count;
642: }
643: }
644: #
645: # need arrays for incorrect and correct because we want to use different
646: # colors for them
647: my @correct;
648: my @incorrect;
649: #
650: my $total =0;
651: for (my $i=0;$i<scalar(@$foils);$i++) {
652: my $foil = $foils->[$i];
653: if ($true{$foil}) {
654: $correct[$i] = $foil_selections{$foil};
655: $incorrect[$i] = 0;
656: } else {
657: $correct[$i] = 0;
658: $incorrect[$i] = $foil_selections{$foil};
659: }
660: $total+=$foil_selections{$foil};
661: }
662: if ($total == 0) { return ''; };
663: for (my $i=0;$i<=$#correct;$i++) {
664: $correct[$i] = sprintf('%0f',$correct[$i]/$total*100);
665: }
666: for (my $i=0;$i<=$#incorrect;$i++) {
667: $incorrect[$i] = sprintf('%0f',$incorrect[$i]/$total*100);
668: }
669: #
670: # Put a blank in the data sets between concepts, if there are concepts
671: my @labels;
672: if (defined($concepts) && scalar(@$concepts) > 1) {
673: my @new_correct;
674: my @new_incorrect;
675: my $foil_count = 0;
676: foreach my $concept (@$concepts) {
677: foreach (@{$concept->{'foils'}}) {
678: push(@new_correct, $correct[$foil_count]);
679: push(@new_incorrect,$incorrect[$foil_count]);
680: push(@labels,++$foil_count);
681: }
682: push(@new_correct,'');
683: push(@new_incorrect,'');
684: push(@labels,'');
685: }
686: @correct = @new_correct;
687: @incorrect = @new_incorrect;
688: } else {
689: @labels = (1 .. scalar(@correct));
690: }
691: #
692: my $xlabel = 'foil chosen';
693: my $plot= &Apache::loncommon::DrawBarGraph($title,
694: $xlabel,
695: 'Percent Choosing',
696: 100,
697: ['#33ff00','#ff3300'],
698: \@labels,
699: \@correct,
700: \@incorrect);
701: return $plot;
702: }
703:
704: sub RR_create_stacked_selection_plot {
705: my ($foils,$foil_data,$title,$true_foils)=@_;
706: #
707: my @dataset; # array of array refs - multicolor rows $datasets[row]->[col]
708: my @labels;
709: my $count;
710: my %column; # maps foil name to column in @datasets
711: for (my $i=0;$i<scalar(@$foils);$i++) {
712: my $foil = $foils->[$i];
713: if (defined($true_foils) && scalar(keys(%$true_foils)) > 0 ) {
714: next if (! $true_foils->{$foil} );
715: push(@labels,$i+1);
716: } else {
717: next if (! exists($foil_data->{$foil}));
718: push(@labels,$i+1);
719: }
720: next if (! exists($foil_data->{$foils->[$i]}));
721: $column{$foil}= $count++;
722: for (my $j=0;$j<scalar(@$foils);$j++) {
723: my $value = 0;
724: if ($i != $j ) {
725: $value += $foil_data->{$foil}->{$foils->[$j]};
726: }
727: $dataset[$j]->[$column{$foil}]=$value;
728: }
729: }
730: #
731: return '' if (! scalar(keys(%column)));
732: #
733: my $grand_total = 0;
734: my %count_per_foil;
735: while (my ($foil,$bar) = each (%column)) {
736: my $bar_total = 0;
737: for (my $j=0;$j<scalar(@dataset);$j++) {
738: $bar_total += $dataset[$j]->[$bar];
739: }
740: next if ($bar_total == 0);
741: for (my $j=0;$j<scalar(@dataset);$j++) {
742: $dataset[$j]->[$bar] =
743: sprintf('%2f',$dataset[$j]->[$bar]/$bar_total * 100);
744: }
745: $count_per_foil{$foil}=' ( '.$bar_total.' )';
746: $grand_total += $bar_total;
747: }
748: if ($grand_total == 0) {
749: return ('',undef);
750: }
751: my @empty_row = ();
752: foreach (@{$dataset[0]}) {
753: push(@empty_row,0);
754: }
755: #
756: my $graph = &Apache::loncommon::DrawBarGraph
757: ($title,'Correct Foil','foils chosen Incorrectly',
758: 100,$plotcolors,\@labels,\@empty_row,@dataset);
759: return ($graph,\%count_per_foil);
760: }
761:
762: # if $correct is a hash ref, it is assumed to be indexed by student names.
763: # the values are assumed to be hash refs with a key of 'answer'.
764: sub RR_classify_response_data {
765: my ($full_row_data,$correct,$function) = @_;
766: my %submission_data;
767: foreach my $row (@$full_row_data) {
768: my %subm = &hashify_attempt($row);
769: if (ref($correct) eq 'HASH') {
770: $subm{'correct'} = $correct->{$subm{'student'}};
771: } else {
772: $subm{'correct'} = $correct;
773: }
774: $subm{'submission'} =~ s/=\d+\s*$//;
775: if (&$function(\%subm)) {
776: $submission_data{'_count'}++;
777: if (&submission_is_correct($subm{'award'})) {
778: $submission_data{'_correct'}++;
779: }
780: $submission_data{$subm{'correct'}}->{$subm{'submission'}}++;
781: }
782: }
783: return \%submission_data;
784: }
785:
786:
787: #########################################################
788: #########################################################
789: ##
790: ## Option Response Routines
791: ##
792: #########################################################
793: #########################################################
794: sub OptionResponseAnalysis {
795: my ($r,$problem,$problem_data,$Students) = @_;
796: my ($resource,$respid) = ($problem->{'resource'},
797: $problem->{'respid'});
798: # Note: part data is not needed.
799: my $PerformanceData = &Apache::loncoursedata::get_response_data
800: (\@Apache::lonstatistics::SelectedSections,
801: $Apache::lonstatistics::enrollment_status,
802: $resource->{'symb'},$respid);
803: if (! defined($PerformanceData) ||
804: ref($PerformanceData) ne 'ARRAY' ) {
805: $r->print('<h2>'.
806: &mt('There is no student data for this problem.').
807: '</h2>');
808: } else {
809: $r->rflush();
810: if (exists($ENV{'form.ExcelOutput'})) {
811: my $result = &OR_excel_sheet($r,$resource,
812: $PerformanceData,
813: $problem_data);
814: $r->print($result);
815: $r->rflush();
816: } else {
817: if ($ENV{'form.AnalyzeOver'} eq 'tries') {
818: my $analysis_html = &OR_tries_analysis($r,
819: $PerformanceData,
820: $problem_data);
821: $r->print($analysis_html);
822: $r->rflush();
823: } elsif ($ENV{'form.AnalyzeOver'} eq 'time') {
824: my $analysis_html = &OR_time_analysis($PerformanceData,
825: $problem_data);
826: $r->print($analysis_html);
827: $r->rflush();
828: } else {
829: $r->print('<h2>'.
830: &mt('The analysis you have selected is '.
831: 'not supported at this time').
832: '</h2>');
833: }
834: }
835: }
836: }
837:
838: #########################################################
839: #
840: # Option Response: tries Analysis
841: #
842: #########################################################
843: sub OR_tries_analysis {
844: my ($r,$PerformanceData,$ORdata) = @_;
845: my $mintries = 1;
846: my $maxtries = $ENV{'form.NumPlots'};
847: my ($table,$Foils,$Concepts) = &build_foil_index($ORdata);
848: my %response_data = &OR_analyze_by_tries($r,$PerformanceData,
849: $mintries,$maxtries);
850: my $analysis = '';
851: #
852: # Compute the data necessary to make the plots
853: my @foil_plot;
854: my @concept_data;
855: for (my $j=0;$j<=scalar(@$Concepts);$j++) {
856: my $concept = $Concepts->[$j];
857: foreach my $foilid (@{$concept->{'foils'}}) {
858: for (my $try=$mintries;$try<=$maxtries;$try++) {
859: # concept analysis data
860: $concept_data[$j]->[$try]->{'_correct'} +=
861: $response_data{$foilid}->[$try]->{'_correct'};
862: $concept_data[$j]->[$try]->{'_total'} +=
863: $response_data{$foilid}->[$try]->{'_total'};
864: #
865: # foil analysis data
866: if ($response_data{$foilid}->[$try]->{'_total'} == 0) {
867: push(@{$foil_plot[$try]->{'_correct'}},0);
868: } else {
869: push(@{$foil_plot[$try]->{'_correct'}},
870: 100*$response_data{$foilid}->[$try]->{'_correct'}/
871: $response_data{$foilid}->[$try]->{'_total'});
872: }
873: foreach my $option (@{$ORdata->{'_Options'}}) {
874: push(@{$foil_plot[$try]->{'_total'}},
875: $response_data{$foilid}->[$try]->{'_total'});
876: if ($response_data{$foilid}->[$try]->{'_total'} == 0) {
877: push (@{$foil_plot[$try]->{$option}},0);
878: } else {
879: if ($response_data{$foilid}->[$try]->{'_total'} ==
880: $response_data{$foilid}->[$try]->{'_correct'}) {
881: push(@{$foil_plot[$try]->{$option}},0);
882: } else {
883: push (@{$foil_plot[$try]->{$option}},
884: 100 *
885: $response_data{$foilid}->[$try]->{$option} /
886: ($response_data{$foilid}->[$try]->{'_total'}
887: -
888: $response_data{$foilid}->[$try]->{'_correct'}
889: ));
890: }
891: }
892: } # End of foreach my $option
893: }
894: } # End of foreach my $foilid
895: } # End of concept loops
896: #
897: # Build a table for the plots
898: my $analysis_html = "<br /><table>\n";
899: my $optionkey = &build_option_index($ORdata);
900: my $num_concepts = 1;
901: if (defined($Concepts)) { $num_concepts = scalar(@$Concepts); }
902: #
903: for (my $try=$mintries;$try<=$maxtries;$try++) {
904: if (! defined($response_data{'_total'}->[$try]) ||
905: $response_data{'_total'}->[$try] == 0) {
906: if ($try > 1) {
907: $analysis_html.= '<tr><td align="center" colspan="4"><b>'.
908: &mt('None of the selected students attempted the problem more than [_1] times.',$try-1).
909: '</b></td></tr>';
910: } else {
911: $analysis_html.= '<tr><td colspan="4" align="center"><b>'.
912: &mt('None of the selected students have attempted the problem').'</b></td></tr>';
913: }
914: last;
915: }
916: my $concept_graph='';
917: if ($num_concepts > 1) {
918: #
919: # Create concept plot
920: my @concept_plot_data;
921: for (my $j=0;$j<=$#concept_data;$j++) {
922: my $total = $concept_data[$j]->[$try]->{'_total'};
923: if ($total == 0) {
924: $concept_plot_data[$j] = 0;
925: } else {
926: $concept_plot_data[$j] = 100 *
927: sprintf('%0.3f',
928: $concept_data[$j]->[$try]->{'_correct'} /
929: $total);
930: }
931: }
932: #
933: $concept_graph = &Apache::loncommon::DrawBarGraph
934: ('Correct Concepts','Concept Number','Percent Correct',
935: 100,$plotcolors,undef,\@concept_plot_data);
936: }
937: #
938: # Create Foil Plots
939: my $data_count = $response_data{'_total'}->[$try];
940: my $correct = $response_data{'_correct'}->[$try];
941: my @Datasets;
942: foreach my $option ('_correct',@{$ORdata->{'_Options'}}) {
943: next if (! exists($foil_plot[$try]->{$option}));
944: push(@Datasets,$foil_plot[$try]->{$option});
945: }
946: #
947: # Put a blank in the data set between concepts
948: for (my $set =0;$set<=$#Datasets;$set++) {
949: my @Data = @{$Datasets[$set]};
950: my $idx = 0;
951: foreach my $concept (@{$Concepts}) {
952: foreach my $foilid (@{$concept->{'foils'}}) {
953: $Datasets[$set]->[$idx++]=shift(@Data);
954: }
955: if ($concept->{'name'} ne $Concepts->[-1]->{'name'}) {
956: $Datasets[$set]->[$idx++] = 0;
957: }
958: }
959: }
960: #
961: # Set up the labels needed for the bar graph
962: my @Labels;
963: my $idx = 1;
964: foreach my $concept (@{$Concepts}) {
965: foreach my $foilid (@{$concept->{'foils'}}) {
966: push(@Labels,$idx++);
967: }
968: push(@Labels,'');
969: }
970: #
971: my $correct_graph = &Apache::loncommon::DrawBarGraph
972: ('Correct Statements','Statement','% Answered Correct',
973: 100,$plotcolors,\@Labels,$Datasets[0]);
974:
975: #
976: #
977: next if (! defined($Datasets[0]));
978: for (my $i=0; $i< scalar(@{$Datasets[0]});$i++) {
979: $Datasets[0]->[$i]=0;
980: }
981: my $count = $response_data{'_total'}->[$try] -
982: $response_data{'_correct'}->[$try];
983: my $incorrect_graph = &Apache::loncommon::DrawBarGraph
984: ('Incorrect Statements','Statement','% Chosen Incorrectly',
985: 100,$plotcolors,\@Labels,@Datasets);
986: $analysis_html.=
987: '<tr><td colspan="4" align="center">'.
988: '<font size="+1">'.
989: &mt('Attempt [_1], [_2] submissions, [_3] correct, [_4] incorrect',
990: $try,$data_count,$correct,$data_count-$correct).
991: '</font>'.'</td></tr>'.$/.
992: '<tr>'.
993: '<td>'.$concept_graph.'</td>'.
994: '<td>'.$correct_graph.'</td>'.
995: '<td>'.$incorrect_graph.'</td>'.
996: '<td>'.$optionkey.'<td>'.
997: '</tr>'.$/;
998: }
999: $analysis_html .= "</table>\n";
1000: $table .= $analysis_html;
1001: return $table;
1002: }
1003:
1004: sub OR_analyze_by_tries {
1005: my ($r,$PerformanceData,$mintries,$maxtries) = @_;
1006: my %Trydata;
1007: $mintries = 1 if (! defined($mintries) || $mintries < 1);
1008: $maxtries = $mintries if (! defined($maxtries) || $maxtries < $mintries);
1009: my @students;
1010: foreach my $row (@$PerformanceData) {
1011: next if (! defined($row));
1012: my $tries = &get_tries_from_row($row);
1013: my %Row = &Process_OR_Row($row);
1014: next if (! %Row);
1015: my $student_id = $row->[&Apache::loncoursedata::RD_student_id()];
1016: $students[$tries]->{$student_id}++;
1017: while (my ($foilid,$href) = each(%Row)) {
1018: if (! ref($href)) {
1019: $Trydata{$foilid}->[$tries] += $href;
1020: next;
1021: }
1022: while (my ($option,$value) = each(%$href)) {
1023: $Trydata{$foilid}->[$tries]->{$option}+=$value;
1024: }
1025: }
1026: }
1027: for (my $try=$mintries;$try<=$maxtries;$try++) {
1028: $Trydata{'_studentcount'}->[$try] = scalar(keys(%{$students[$try]}));
1029: }
1030: return %Trydata;
1031: }
1032:
1033: #########################################################
1034: #
1035: # Option Response: Time Analysis
1036: #
1037: #########################################################
1038: sub OR_time_analysis {
1039: my ($performance_data,$ORdata) = @_;
1040: my ($table,$Foils,$Concepts) = &build_foil_index($ORdata);
1041: my $foilkey = &build_option_index($ORdata);
1042: my $num_concepts = 1;
1043: if (defined($Concepts)) { $num_concepts = scalar(@$Concepts); }
1044: #
1045: if ($num_concepts < 2) {
1046: $table = '<h3>'.
1047: &mt('Not enough data for concept analysis. '.
1048: 'Performing Foil Analysis').
1049: '</h3>'.$table;
1050: }
1051: #
1052: my $num_plots = $ENV{'form.NumPlots'};
1053: my $num_data = scalar(@$performance_data)-1;
1054: #
1055: my $current_index;
1056: $table .= "<table>\n";
1057: for (my $i=0;$i<$num_plots;$i++) {
1058: ##
1059: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
1060: ('startdate_'.$i);
1061: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
1062: ('enddate_'.$i);
1063: if (! defined($starttime) || ! defined($endtime)) {
1064: my $sec_in_day = 86400;
1065: my $last_sub_time = &get_time_from_row($performance_data->[-1]);
1066: my ($sday,$smon,$syear) =
1067: (localtime($last_sub_time - $sec_in_day*$i))[3..5];
1068: $starttime = &Time::Local::timelocal(0,0,0,$sday,$smon,$syear);
1069: $endtime = $starttime + $sec_in_day;
1070: if ($i == ($num_plots -1 )) {
1071: $starttime = &get_time_from_row($performance_data->[0]);
1072: }
1073: }
1074: $table .= '<tr><td colspan="4" align="center"><font size="+1">'.
1075: &mt('Data from [_1] to [_2]',
1076: &Apache::lonlocal::locallocaltime($starttime),
1077: &Apache::lonlocal::locallocaltime($endtime)).
1078: '</font></td></tr>'.$/;
1079: my $startdateform = &Apache::lonhtmlcommon::date_setter
1080: ('Statistics','startdate_'.$i,$starttime);
1081: my $enddateform = &Apache::lonhtmlcommon::date_setter
1082: ('Statistics','enddate_'.$i,$endtime);
1083: #
1084: my $begin_index;
1085: my $end_index;
1086: my $j;
1087: while (++$j < scalar(@$performance_data)) {
1088: last if (&get_time_from_row($performance_data->[$j])
1089: > $starttime);
1090: }
1091: $begin_index = $j;
1092: while ($j < scalar(@$performance_data)) {
1093: if (&get_time_from_row($performance_data->[$j]) > $endtime) {
1094: last;
1095: } else {
1096: $j++;
1097: }
1098: }
1099: $end_index = $j;
1100: ##
1101: my ($processed_time_data,$correct,$data_count,$student_count) =
1102: &OR_time_process_data($performance_data,$begin_index,$end_index);
1103: ##
1104: $table .= '<tr><td colspan="4" align="center"><font size="+1">'.
1105: &mt('[_1] submissions from [_2] students submitting, [_3] correct, [_4] incorrect',
1106: $data_count,$student_count,$correct,$data_count-$correct).
1107: '</font></td></tr>'.$/;
1108: my $concept_correct_plot = '';
1109: if ($num_concepts > 1) {
1110: $concept_correct_plot =
1111: &OR_Concept_Time_Analysis($processed_time_data,
1112: $correct,$data_count,$student_count,
1113: $ORdata,$Concepts);
1114: }
1115: my ($foil_correct_plot,$foil_incorrect_plot) =
1116: &OR_Foil_Time_Analysis($processed_time_data,
1117: $correct,$data_count,$student_count,
1118: $ORdata,$Foils,$Concepts);
1119: $table .= '<tr>'.
1120: '<td>'.$concept_correct_plot.'</td>'.
1121: '<td>'.$foil_correct_plot.'</td>'.
1122: '<td>'.$foil_incorrect_plot.'</td>'.
1123: '<td align="left" valign="top">'.$foilkey.'</td></tr>'.$/;
1124: $table .= '<tr><td colspan="4" align="center">'.
1125: &mt('Start time: [_1]',$startdateform).'<br />'.
1126: &mt('End time: [_1]',$enddateform).'</td></tr>'.$/;
1127: $table.= '<tr><td colspan="4"> </td></tr>'.$/;
1128: }
1129: $table .= '</table>';
1130: #
1131: return $table;
1132: }
1133:
1134: sub OR_Foil_Time_Analysis {
1135: my ($processed_time_data,$correct,$data_count,$student_count,
1136: $ORdata,$Foils,$Concepts) = @_;
1137: if ($data_count <= 0) {
1138: return ('<h2>'.&mt('There is no data to plot').'</h2>','');
1139: }
1140: my $analysis_html;
1141: my @plotdata;
1142: my @labels;
1143: foreach my $concept (@{$Concepts}) {
1144: foreach my $foil (@{$concept->{'foils'}}) {
1145: push(@labels,scalar(@labels)+1);
1146: my $total = $processed_time_data->{$foil}->{'_total'};
1147: if ($total == 0) {
1148: push(@{$plotdata[0]},0);
1149: } else {
1150: push(@{$plotdata[0]},
1151: 100 * $processed_time_data->{$foil}->{'_correct'} / $total);
1152: }
1153: my $total_incorrect = $total - $processed_time_data->{$foil}->{'_correct'};
1154: for (my $i=0;$i<scalar(@{$ORdata->{'_Options'}});$i++) {
1155: my $option = $ORdata->{'_Options'}->[$i];
1156: if ($total_incorrect == 0) {
1157: push(@{$plotdata[$i+1]},0);
1158: } else {
1159: push(@{$plotdata[$i+1]},
1160: 100 * $processed_time_data->{$foil}->{$option} / $total_incorrect);
1161: }
1162: }
1163: }
1164: # Put in a blank one
1165: push(@labels,'');
1166: push(@{$plotdata[0]},0);
1167: for (my $i=0;$i<scalar(@{$ORdata->{'_Options'}});$i++) {
1168: push(@{$plotdata[$i+1]},0);
1169: }
1170: }
1171: #
1172: # Create the plot
1173: my $correct_plot = &Apache::loncommon::DrawBarGraph('Correct Statements',
1174: 'Statement Number',
1175: 'Percent Correct',
1176: 100,
1177: $plotcolors,
1178: undef,
1179: $plotdata[0]);
1180: for (my $j=0; $j< scalar(@{$plotdata[0]});$j++) {
1181: $plotdata[0]->[$j]=0;
1182: }
1183: my $incorrect_plot =
1184: &Apache::loncommon::DrawBarGraph('Incorrect Statements',
1185: 'Statement Number',
1186: 'Incorrect Option Choice',
1187: 100,
1188: $plotcolors,
1189: undef,
1190: @plotdata);
1191: return ($correct_plot,$incorrect_plot);
1192: }
1193:
1194: sub OR_Concept_Time_Analysis {
1195: my ($processed_time_data,$correct,$data_count,$student_count,
1196: $ORdata,$Concepts) = @_;
1197: return '' if ($data_count == 0);
1198: #
1199: # Put the data in plottable form
1200: my @plotdata;
1201: foreach my $concept (@$Concepts) {
1202: my ($total,$correct);
1203: foreach my $foil (@{$concept->{'foils'}}) {
1204: $total += $processed_time_data->{$foil}->{'_total'};
1205: $correct += $processed_time_data->{$foil}->{'_correct'};
1206: }
1207: if ($total == 0) {
1208: push(@plotdata,0);
1209: } else {
1210: push(@plotdata,100 * $correct / $total);
1211: }
1212: }
1213: #
1214: # Create the plot
1215: return &Apache::loncommon::DrawBarGraph('Correct Concepts',
1216: 'Concept Number',
1217: 'Percent Correct',
1218: 100,
1219: $plotcolors,
1220: undef,
1221: \@plotdata);
1222: }
1223:
1224: sub OR_time_process_data {
1225: my ($performance_data,$begin_index,$end_index)=@_;
1226: my %processed_time_data;
1227: my %distinct_students;
1228: my ($correct,$data_count);
1229: if (($begin_index == $end_index) &&
1230: ($end_index != scalar(@$performance_data)-1)) {
1231: return undef;
1232: }
1233: # Be sure we include the last one if we are asked for it.
1234: # That we have to correct here (and not when $end_index is
1235: # given a value) should probably be considered a bug.
1236: if ($end_index == scalar(@$performance_data)-1) {
1237: $end_index++;
1238: }
1239: &Apache::lonnet::logthis(' '.$begin_index.':'.$end_index);
1240: my $count;
1241: for (my $i=$begin_index;$i<$end_index;$i++) {
1242: my $attempt = $performance_data->[$i];
1243: $count++;
1244: next if (! defined($attempt));
1245: my %attempt = &Process_OR_Row($attempt);
1246: $data_count++;
1247: $correct += $attempt{'_correct'};
1248: $distinct_students{$attempt->[&Apache::loncoursedata::RD_student_id()]}++;
1249: while (my ($foilid,$href) = each(%attempt)) {
1250: if (! ref($href)) {
1251: $processed_time_data{$foilid} += $href;
1252: next;
1253: }
1254: while (my ($option,$value) = each(%$href)) {
1255: $processed_time_data{$foilid}->{$option}+=$value;
1256: }
1257: }
1258: }
1259: &Apache::lonnet::logthis('count = '.$count);
1260: return (\%processed_time_data,$correct,$data_count,
1261: scalar(keys(%distinct_students)));
1262: }
1263:
1264: #########################################################
1265: #########################################################
1266: ##
1267: ## Excel output
1268: ##
1269: #########################################################
1270: #########################################################
1271: sub OR_excel_sheet {
1272: my ($r,$resource,$performance_data,$ORdata) = @_;
1273: my $response = '';
1274: my (undef,$Foils,$Concepts) = &build_foil_index($ORdata);
1275: #
1276: # Create excel worksheet
1277: my $filename = '/prtspool/'.
1278: $ENV{'user.name'}.'_'.$ENV{'user.domain'}.'_'.
1279: time.'_'.rand(1000000000).'.xls';
1280: my $workbook = Spreadsheet::WriteExcel->new('/home/httpd'.$filename);
1281: if (! defined($workbook)) {
1282: $r->log_error("Error creating excel spreadsheet $filename: $!");
1283: $r->print('<p>'.&mt("Unable to create new Excel file. ".
1284: "This error has been logged. ".
1285: "Please alert your LON-CAPA administrator").
1286: '</p>');
1287: return undef;
1288: }
1289: #
1290: $workbook->set_tempdir('/home/httpd/perl/tmp');
1291: my $format = &Apache::loncommon::define_excel_formats($workbook);
1292: #
1293: # Create and populate main worksheets
1294: my $problem_data_sheet = $workbook->addworksheet('Problem Data');
1295: my $student_data_sheet = &build_student_data_worksheet($workbook,$format);
1296: my $response_data_sheet = $workbook->addworksheet('Response Data');
1297: foreach my $sheet ($problem_data_sheet,$student_data_sheet,
1298: $response_data_sheet) {
1299: $sheet->write(0,0,$resource->{'title'},$format->{'h2'});
1300: $sheet->write(1,0,$resource->{'src'},$format->{'h3'});
1301: }
1302: #
1303: my $result;
1304: $result = &OR_build_problem_data_worksheet($problem_data_sheet,$format,
1305: $Concepts,$ORdata);
1306: if ($result ne 'okay') {
1307: # Do something useful
1308: }
1309: $result = &OR_build_response_data_worksheet($response_data_sheet,$format,
1310: $performance_data,$Foils,
1311: $ORdata);
1312: if ($result ne 'okay') {
1313: # Do something useful
1314: }
1315: $response_data_sheet->activate();
1316: #
1317: # Close the excel file
1318: $workbook->close();
1319: #
1320: # Write a link to allow them to download it
1321: $result .= '<h2>'.&mt('Excel Raw Data Output').'</h2>'.
1322: '<p><a href="'.$filename.'">'.
1323: &mt('Your Excel spreadsheet.').
1324: '</a></p>'."\n";
1325: return $result;
1326: }
1327:
1328: sub OR_build_problem_data_worksheet {
1329: my ($worksheet,$format,$Concepts,$ORdata) = @_;
1330: my $rows_output = 3;
1331: my $cols_output = 0;
1332: $worksheet->write($rows_output++,0,'Problem Structure',$format->{'h3'});
1333: ##
1334: ##
1335: my @Headers;
1336: if (@$Concepts > 1) {
1337: @Headers = ("Concept\nNumber",'Concept',"Foil\nNumber",
1338: 'Foil Name','Foil Text','Correct value');
1339: } else {
1340: @Headers = ('Foil Number','FoilName','Foil Text','Correct value');
1341: }
1342: $worksheet->write_row($rows_output++,0,\@Headers,$format->{'header'});
1343: my %Foildata = %{$ORdata->{'_Foils'}};
1344: my $conceptindex = 1;
1345: my $foilindex = 1;
1346: foreach my $concept (@$Concepts) {
1347: my @FoilsInConcept = @{$concept->{'foils'}};
1348: my $firstfoil = shift(@FoilsInConcept);
1349: if (@$Concepts > 1) {
1350: $worksheet->write_row($rows_output++,0,
1351: [$conceptindex,
1352: $concept->{'name'},
1353: $foilindex++,
1354: $Foildata{$firstfoil}->{'name'},
1355: $Foildata{$firstfoil}->{'text'},
1356: $Foildata{$firstfoil}->{'value'},]);
1357: } else {
1358: $worksheet->write_row($rows_output++,0,
1359: [ $foilindex++,
1360: $Foildata{$firstfoil}->{'name'},
1361: $Foildata{$firstfoil}->{'text'},
1362: $Foildata{$firstfoil}->{'value'},]);
1363: }
1364: foreach my $foilid (@FoilsInConcept) {
1365: if (@$Concepts > 1) {
1366: $worksheet->write_row($rows_output++,0,
1367: ['',
1368: '',
1369: $foilindex,
1370: $Foildata{$foilid}->{'name'},
1371: $Foildata{$foilid}->{'text'},
1372: $Foildata{$foilid}->{'value'},]);
1373: } else {
1374: $worksheet->write_row($rows_output++,0,
1375: [$foilindex,
1376: $Foildata{$foilid}->{'name'},
1377: $Foildata{$foilid}->{'text'},
1378: $Foildata{$foilid}->{'value'},]);
1379: }
1380: } continue {
1381: $foilindex++;
1382: }
1383: } continue {
1384: $conceptindex++;
1385: }
1386: $rows_output++;
1387: $rows_output++;
1388: ##
1389: ## Option data output
1390: $worksheet->write($rows_output++,0,'Options',$format->{'header'});
1391: foreach my $string (@{$ORdata->{'_Options'}}) {
1392: $worksheet->write($rows_output++,0,$string);
1393: }
1394: return 'okay';
1395: }
1396:
1397: sub OR_build_response_data_worksheet {
1398: my ($worksheet,$format,$performance_data,$Foils,$ORdata)=@_;
1399: my $rows_output = 3;
1400: my $cols_output = 0;
1401: $worksheet->write($rows_output++,0,'Response Data',$format->{'h3'});
1402: $worksheet->set_column(1,1,20);
1403: $worksheet->set_column(2,2,13);
1404: my @Headers = ('identifier','time','award detail','attempt');
1405: foreach my $foil (@$Foils) {
1406: push (@Headers,$foil.' submission');
1407: push (@Headers,$foil.' grading');
1408: }
1409: $worksheet->write_row($rows_output++,0,\@Headers,$format->{'header'});
1410: #
1411: foreach my $row (@$performance_data) {
1412: next if (! defined($row));
1413: my ($student,$award,$grading,$submission,$time,$tries) = @$row;
1414: my @Foilgrades = split('&',$grading);
1415: my @Foilsubs = split('&',$submission);
1416: my %response_data;
1417: for (my $j=0;$j<=$#Foilgrades;$j++) {
1418: my ($foilid,$correct) = split('=',$Foilgrades[$j]);
1419: my (undef,$submission) = split('=',$Foilsubs[$j]);
1420: $submission = &Apache::lonnet::unescape($submission);
1421: $response_data{$foilid.' submission'}=$submission;
1422: $response_data{$foilid.' award'}=$correct;
1423: }
1424: $worksheet->write($rows_output,$cols_output++,$student);
1425: $worksheet->write($rows_output,$cols_output++,
1426: &Apache::lonstathelpers::calc_serial($time),$format->{'date'});
1427: $worksheet->write($rows_output,$cols_output++,$award);
1428: $worksheet->write($rows_output,$cols_output++,$tries);
1429: foreach my $foilid (@$Foils) {
1430: $worksheet->write($rows_output,$cols_output++,
1431: $response_data{$foilid.' submission'});
1432: $worksheet->write($rows_output,$cols_output++,
1433: $response_data{$foilid.' award'});
1434: }
1435: $rows_output++;
1436: $cols_output = 0;
1437: }
1438: return;
1439: }
1440:
1441: sub build_foil_index {
1442: my ($ORdata) = @_;
1443: return if (! exists($ORdata->{'_Foils'}));
1444: my %Foildata = %{$ORdata->{'_Foils'}};
1445: my @Foils = sort(keys(%Foildata));
1446: my %Concepts;
1447: foreach my $foilid (@Foils) {
1448: push(@{$Concepts{$Foildata{$foilid}->{'_Concept'}}},
1449: $foilid);
1450: }
1451: undef(@Foils);
1452: # Having gathered the concept information in a hash, we now translate it
1453: # into an array because we need to be consistent about order.
1454: # Also put the foils in order, too.
1455: my $sortfunction = sub {
1456: my %Numbers = (one => 1,
1457: two => 2,
1458: three => 3,
1459: four => 4,
1460: five => 5,
1461: six => 6,
1462: seven => 7,
1463: eight => 8,
1464: nine => 9,
1465: ten => 10,);
1466: my $a1 = lc($a);
1467: my $b1 = lc($b);
1468: if (exists($Numbers{$a1})) {
1469: $a1 = $Numbers{$a1};
1470: }
1471: if (exists($Numbers{$b1})) {
1472: $b1 = $Numbers{$b1};
1473: }
1474: if (($a1 =~/^\d+$/) && ($b1 =~/^\d+$/)) {
1475: return $a1 <=> $b1;
1476: } else {
1477: return $a1 cmp $b1;
1478: }
1479: };
1480: my @Concepts;
1481: foreach my $concept (sort $sortfunction (keys(%Concepts))) {
1482: if (! defined($Concepts{$concept})) {
1483: $Concepts{$concept}=[];
1484: # next;
1485: }
1486: push(@Concepts,{ name => $concept,
1487: foils => [@{$Concepts{$concept}}]});
1488: push(@Foils,(@{$Concepts{$concept}}));
1489: }
1490: #
1491: # Build up the table of row labels.
1492: my $table = '<table border="1" >'."\n";
1493: if (@Concepts > 1) {
1494: $table .= '<tr>'.
1495: '<th>'.&mt('Concept Number').'</th>'.
1496: '<th>'.&mt('Concept').'</th>'.
1497: '<th>'.&mt('Foil Number').'</th>'.
1498: '<th>'.&mt('Foil Name').'</th>'.
1499: '<th>'.&mt('Foil Text').'</th>'.
1500: '<th>'.&mt('Correct Value').'</th>'.
1501: "</tr>\n";
1502: } else {
1503: $table .= '<tr>'.
1504: '<th>'.&mt('Foil Number').'</th>'.
1505: '<th>'.&mt('Foil Name').'</th>'.
1506: '<th>'.&mt('Foil Text').'</th>'.
1507: '<th>'.&mt('Correct Value').'</th>'.
1508: "</tr>\n";
1509: }
1510: my $conceptindex = 1;
1511: my $foilindex = 1;
1512: foreach my $concept (@Concepts) {
1513: my @FoilsInConcept = @{$concept->{'foils'}};
1514: my $firstfoil = shift(@FoilsInConcept);
1515: if (@Concepts > 1) {
1516: $table .= '<tr>'.
1517: '<td>'.$conceptindex.'</td>'.
1518: '<td>'.&HTML::Entities::encode($concept->{'name'},'<>&"').'</td>'.
1519: '<td>'.$foilindex++.'</td>'.
1520: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'name'},'<>&"').'</td>'.
1521: '<td>'.$Foildata{$firstfoil}->{'text'}.'</td>'.
1522: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'value'},'<>&"').'</td>'.
1523: "</tr>\n";
1524: } else {
1525: $table .= '<tr>'.
1526: '<td>'.$foilindex++.'</td>'.
1527: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'name'},'<>&"').'</td>'.
1528: '<td>'.$Foildata{$firstfoil}->{'text'}.'</td>'.
1529: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'value'},'<>&"').'</td>'.
1530: "</tr>\n";
1531: }
1532: foreach my $foilid (@FoilsInConcept) {
1533: if (@Concepts > 1) {
1534: $table .= '<tr>'.
1535: '<td></td>'.
1536: '<td></td>'.
1537: '<td>'.$foilindex.'</td>'.
1538: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'name'},'<>&"').'</td>'.
1539: '<td>'.$Foildata{$foilid}->{'text'}.'</td>'.
1540: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'value'},'<>&"').'</td>'.
1541: "</tr>\n";
1542: } else {
1543: $table .= '<tr>'.
1544: '<td>'.$foilindex.'</td>'.
1545: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'name'},'<>&"').'</td>'.
1546: '<td>'.$Foildata{$foilid}->{'text'}.'</td>'.
1547: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'value'},'<>&"').'</td>'.
1548: "</tr>\n";
1549: }
1550: } continue {
1551: $foilindex++;
1552: }
1553: } continue {
1554: $conceptindex++;
1555: }
1556: $table .= "</table>\n";
1557: #
1558: # Build option index with color stuff
1559: return ($table,\@Foils,\@Concepts);
1560: }
1561:
1562: sub build_option_index {
1563: my ($ORdata)= @_;
1564: my $table = "<table>\n";
1565: my $optionindex = 0;
1566: my @Rows;
1567: foreach my $option (&mt('correct option chosen'),@{$ORdata->{'_Options'}}) {
1568: my $color = $plotcolors->[$optionindex++];
1569: push (@Rows,
1570: '<tr>'.
1571: '<td bgcolor="'.$color.'">'.
1572: '<font color="'.$color.'">'.('*'x3).'</font>'.'</td>'.
1573: '<td>'.&HTML::Entities::encode($option,'<>&"').'</td>'.
1574: "</tr>\n");
1575: }
1576: shift(@Rows); # Throw away 'correct option chosen' color
1577: $table .= join('',reverse(@Rows));
1578: $table .= "</table>\n";
1579: }
1580:
1581: sub build_foil_key {
1582: my ($foils,$extra_data)= @_;
1583: if (! defined($extra_data)) { $extra_data = {}; }
1584: my $table = "<table>\n";
1585: my $foil_index = 0;
1586: my @rows;
1587: foreach my $foil (&mt('correct foil chosen'),@{$foils}) {
1588: my $color = $plotcolors->[$foil_index++];
1589: push (@rows,
1590: '<tr>'.
1591: '<td bgcolor="'.$color.'" class="key">'.
1592: '<font color="'.$color.'">'.('*'x4).'</font></td>'.
1593: '<td>'.&HTML::Entities::encode($foil,'<>&"').
1594: (' 'x2).$extra_data->{$foil}.'</td>'.
1595: "</tr>\n");
1596: }
1597: shift(@rows); # Throw away 'correct foil chosen' color
1598: $table .= join('',reverse(@rows));
1599: $table .= "</table>\n";
1600: }
1601:
1602: #########################################################
1603: #########################################################
1604: ##
1605: ## Generic Interface Routines
1606: ##
1607: #########################################################
1608: #########################################################
1609: sub CreateInterface {
1610: ##
1611: ## Environment variable initialization
1612: if (! exists$ENV{'form.AnalyzeOver'}) {
1613: $ENV{'form.AnalyzeOver'} = 'tries';
1614: }
1615: ##
1616: ## Build the menu
1617: my $Str = '';
1618: $Str .= &Apache::lonhtmlcommon::breadcrumbs
1619: (undef,'Detailed Problem Analysis');
1620: $Str .= '<table cellspacing="5">'."\n";
1621: $Str .= '<tr>';
1622: $Str .= '<td align="center"><b>'.&mt('Sections').'</b></td>';
1623: $Str .= '<td align="center"><b>'.&mt('Enrollment Status').'</b></td>';
1624: # $Str .= '<td align="center"><b>'.&mt('Sequences and Folders').'</b></td>';
1625: $Str .= '<td align="center"> </td>';
1626: $Str .= '</tr>'."\n";
1627: ##
1628: ##
1629: $Str .= '<tr><td align="center">'."\n";
1630: $Str .= &Apache::lonstatistics::SectionSelect('Section','multiple',5);
1631: $Str .= '</td>';
1632: #
1633: $Str .= '<td align="center">';
1634: $Str .= &Apache::lonhtmlcommon::StatusOptions(undef,undef,5);
1635: $Str .= '</td>';
1636: #
1637: # $Str .= '<td align="center">';
1638: my $only_seq_with_assessments = sub {
1639: my $s=shift;
1640: if ($s->{'num_assess'} < 1) {
1641: return 0;
1642: } else {
1643: return 1;
1644: }
1645: };
1646: &Apache::lonstatistics::MapSelect('Maps','multiple,all',5,
1647: $only_seq_with_assessments);
1648: ##
1649: ##
1650: $Str .= '<td>';
1651: ##
1652: my $showprob_checkbox =
1653: '<input type="checkbox" name="show_prob" value="true" ';
1654: if ($ENV{'form.show_prob'} eq 'true') {
1655: $showprob_checkbox .= 'checked ';
1656: }
1657: $showprob_checkbox.= ' />';
1658: $Str.= '<nobr><label>'.
1659: &mt('Show problem [_1]',$showprob_checkbox).
1660: '</label></nobr><br />';
1661: ##
1662: my $analyze_selector = '<select name="AnalyzeOver" >';
1663: $analyze_selector .= '<option value="tries" ';
1664: if (! exists($ENV{'form.AnalyzeOver'}) ||
1665: $ENV{'form.AnalyzeOver'} eq 'tries'){
1666: # Default to tries
1667: $analyze_selector .= ' selected ';
1668: }
1669: $analyze_selector .= '>'.&mt('Tries').'</option>';
1670: $analyze_selector .= '<option value="time" ';
1671: $analyze_selector .= ' selected ' if ($ENV{'form.AnalyzeOver'} eq 'time');
1672: $analyze_selector .= '>'.&mt('Time').'</option>';
1673: $analyze_selector .= '</select>';
1674: $Str .= '<nobr><label>'.
1675: &mt('Analyze Over [_1] [_2]',
1676: $analyze_selector,
1677: &Apache::loncommon::help_open_topic('Analysis_Analyze_Over')).
1678: '</label></nobr><br />'.$/;
1679: ##
1680: my $numplots_selector = '<select name="NumPlots">';
1681: if (! exists($ENV{'form.NumPlots'})
1682: || $ENV{'form.NumPlots'} < 1
1683: || $ENV{'form.NumPlots'} > 20) {
1684: $ENV{'form.NumPlots'} = 5;
1685: }
1686: foreach my $i (1,2,3,4,5,6,7,8,10,15,20) {
1687: $numplots_selector .= '<option value="'.$i.'" ';
1688: if ($ENV{'form.NumPlots'} == $i) { $numplots_selector.=' selected '; }
1689: $numplots_selector .= '>'.$i.'</option>';
1690: }
1691: $numplots_selector .= '</select></nobr><br />';
1692: $Str .= '<nobr><label>'.&mt('Number of Plots [_1]',$numplots_selector).
1693: '</label></nobr>';
1694: ##
1695: $Str .= '<nobr><label>'.&mt('Status: [_1]',
1696: '<input type="text" '.
1697: 'name="stats_status" size="60" value="" />'
1698: ).
1699: '</label></nobr>';
1700: $Str .= '</td>';
1701: ##
1702: ##
1703: $Str .= '</tr>'."\n";
1704: $Str .= '</table>'."\n";
1705: return $Str;
1706: }
1707:
1708: #########################################################
1709: #########################################################
1710: ##
1711: ## Misc Option Response functions
1712: ##
1713: #########################################################
1714: #########################################################
1715: sub get_time_from_row {
1716: my ($row) = @_;
1717: if (ref($row)) {
1718: return $row->[&Apache::loncoursedata::RD_timestamp()];
1719: }
1720: return undef;
1721: }
1722:
1723: sub get_tries_from_row {
1724: my ($row) = @_;
1725: if (ref($row)) {
1726: return $row->[&Apache::loncoursedata::RD_tries()];
1727: }
1728: return undef;
1729: }
1730:
1731: sub hashify_attempt {
1732: my ($row) = @_;
1733: my %attempt;
1734: $attempt{'student'} = $row->[&Apache::loncoursedata::RD_sname()];
1735: $attempt{'tries'} = $row->[&Apache::loncoursedata::RD_tries()];
1736: $attempt{'submission'} = &Apache::lonnet::unescape($row->[&Apache::loncoursedata::RD_submission()]);
1737: $attempt{'award'} = $row->[&Apache::loncoursedata::RD_awarddetail()];
1738: $attempt{'timestamp'} = $row->[&Apache::loncoursedata::RD_timestamp()];
1739: return %attempt;
1740: }
1741:
1742: sub Process_OR_Row {
1743: my ($row) = @_;
1744: my %RowData;
1745: # my $student_id = $row->[&Apache::loncoursedata::RD_student_id()];
1746: my $award = $row->[&Apache::loncoursedata::RD_awarddetail()];
1747: my $grading = $row->[&Apache::loncoursedata::RD_response_eval()];
1748: my $submission = $row->[&Apache::loncoursedata::RD_submission()];
1749: my $time = $row->[&Apache::loncoursedata::RD_timestamp()];
1750: # my $tries = $row->[&Apache::loncoursedata::RD_tries()];
1751: return undef if ($award eq 'MISSING_ANSWER');
1752: if (&submission_is_correct($award)) {
1753: $RowData{'_correct'} = 1;
1754: }
1755: $RowData{'_total'} = 1;
1756: my @Foilgrades = split('&',$grading);
1757: my @Foilsubs = split('&',$submission);
1758: for (my $j=0;$j<=$#Foilgrades;$j++) {
1759: my ($foilid,$correct) = split('=',$Foilgrades[$j]);
1760: $foilid = &Apache::lonnet::unescape($foilid);
1761: my (undef,$submission) = split('=',$Foilsubs[$j]);
1762: if ($correct) {
1763: $RowData{$foilid}->{'_correct'}++;
1764: } else {
1765: $submission = &Apache::lonnet::unescape($submission);
1766: $RowData{$foilid}->{$submission}++;
1767: }
1768: $RowData{$foilid}->{'_total'}++;
1769: }
1770: return %RowData;
1771: }
1772:
1773: sub submission_is_correct {
1774: my ($award) = @_;
1775: if ($award =~ /(APPROX_ANS|EXACT_ANS)/) {
1776: return 1;
1777: } else {
1778: return 0;
1779: }
1780: }
1781:
1782: 1;
1783:
1784: __END__
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