1: # The LearningOnline Network with CAPA
2: #
3: # $Id: lonproblemanalysis.pm,v 1.142.2.2 2012/12/17 03:52:30 raeburn 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 capa;
41: use lib '/home/httpd/lib/perl/';
42: use LONCAPA;
43:
44:
45: my $plotcolors = ['#33ff00',
46: '#0033cc', '#990000', '#aaaa66', '#663399', '#ff9933',
47: '#66ccff', '#ff9999', '#cccc33', '#660000', '#33cc66',
48: ];
49:
50: my @SubmitButtons = ({ name => 'PrevProblemAnalysis',
51: text => 'Previous Problem' },
52: { name => 'ProblemAnalysis',
53: text => 'Analyze Problem Again' },
54: { name => 'NextProblemAnalysis',
55: text => 'Next Problem' },
56: { name => 'break'},
57: { name => 'SelectAnother',
58: text => 'Choose a different Problem' });
59:
60: sub BuildProblemAnalysisPage {
61: my ($r,$c)=@_;
62: #
63: my %Saveable_Parameters = ('Status' => 'scalar',
64: 'Section' => 'array',
65: 'Groups' => 'array',
66: 'NumPlots' => 'scalar',
67: 'AnalyzeOver' => 'scalar',
68: );
69: &Apache::loncommon::store_course_settings('problem_analysis',
70: \%Saveable_Parameters);
71: &Apache::loncommon::restore_course_settings('problem_analysis',
72: \%Saveable_Parameters);
73: #
74: &Apache::lonstatistics::PrepareClasslist();
75: #
76: $r->print(&Apache::lonhtmlcommon::breadcrumbs('Detailed Problem Analysis'));
77:
78: $r->print(&CreateInterface());
79: #
80: my @Students = @Apache::lonstatistics::Students;
81: #
82: if (@Students < 1 && exists($env{'form.firstrun'})) {
83: $r->print('<div class="LC_warning">'
84: .&mt('There are no students in the sections/groups selected.')
85: .'</div>'
86: );
87: }
88: #
89: my @CacheButtonHTML =
90: &Apache::lonstathelpers::manage_caches($r,'Statistics','stats_status');
91: $r->rflush();
92: #
93: my $problem_types = '(option|radiobutton|numerical)';
94: if (exists($env{'form.problemchoice'}) &&
95: ! exists($env{'form.SelectAnother'})) {
96: foreach my $button (@SubmitButtons) {
97: if ($button->{'name'} eq 'break') {
98: $r->print("<br />\n");
99: } else {
100: $r->print('<input type="submit" name="'.$button->{'name'}.'" '.
101: 'value="'.&mt($button->{'text'}).'" />');
102: $r->print(' 'x5);
103: }
104: }
105: foreach my $html (@CacheButtonHTML) {
106: $r->print($html.(' 'x5));
107: }
108: #
109:
110: # This is commented out pending actual implementation of
111: # CSV and Excel output.
112: #$r->print(&Apache::lonstathelpers::submission_report_form
113: # ('problem_analysis'));
114: #
115: $r->print('<hr />');
116: $r->rflush();
117: #
118: # Determine which problem we are to analyze
119: my $current_problem = &Apache::lonstathelpers::get_target_from_id
120: ($env{'form.problemchoice'});
121: #
122: my ($navmap,$prev,$curr,$next) =
123: &Apache::lonstathelpers::get_prev_curr_next($current_problem,
124: $problem_types,
125: 'response',
126: );
127: if (exists($env{'form.PrevProblemAnalysis'}) && defined($prev)) {
128: $current_problem = $prev;
129: } elsif (exists($env{'form.NextProblemAnalysis'}) && defined($next)) {
130: $current_problem = $next;
131: } else {
132: $current_problem = $curr;
133: }
134: #
135: # Store the current problem choice and send it out in the form
136: $env{'form.problemchoice'} =
137: &Apache::lonstathelpers::make_target_id($current_problem);
138: $r->print('<input type="hidden" name="problemchoice" value="'.
139: $env{'form.problemchoice'}.'" />');
140: #
141: if (! defined($current_problem->{'resource'})) {
142: $r->print('resource is undefined');
143: } else {
144: my $resource = $current_problem->{'resource'};
145: $r->print('<h1>'.$resource->compTitle.'</h1>');
146: $r->print('<h3>'.$resource->src.'</h3>');
147: $r->print('<p>'.&Apache::lonstatistics::section_and_enrollment_description().'</p>');
148: if ($env{'form.show_prob'} eq 'true') {
149: $r->print('<hr />'
150: .&Apache::lonstathelpers::render_resource($resource)
151: .'<hr />'
152: );
153: }
154: $r->rflush();
155: if (@Students) {
156: my %Data = &Apache::lonstathelpers::get_problem_data
157: ($resource->src);
158: my $problem_data = $Data{$current_problem->{'part'}.
159: '.'.
160: $current_problem->{'respid'}};
161: if ($current_problem->{'resptype'} eq 'option') {
162: &OptionResponseAnalysis($r,$current_problem,
163: $problem_data,
164: \@Students);
165: } elsif ($current_problem->{'resptype'} eq 'radiobutton') {
166: &radio_response_analysis($r,$current_problem,
167: $problem_data,
168: \@Students);
169: } elsif ($current_problem->{'resptype'} eq 'numerical') {
170: &numerical_response_analysis($r,$current_problem,
171: $problem_data,\@Students);
172: } else {
173: $r->print('<div class="LC_warning">'
174: .&mt('Analysis of [_1] is not supported.'
175: ,$current_problem->{'resptype'})
176: .'</div>'
177: );
178: }
179: }
180: }
181: $r->print('<hr />');
182: } else {
183: my $submit_button = '<input type="submit" '.
184: 'name="ProblemAnalysis" value="'.
185: &mt('Analyze Problem').'" />';
186: $r->print($submit_button);
187: $r->print(' 'x5);
188: $r->print('<h3>'.&mt('Please select a problem to analyze').'</h3>');
189: $r->print(&Apache::lonstathelpers::problem_selector($problem_types,
190: $submit_button));
191: }
192: }
193:
194: #########################################################
195: #########################################################
196: ##
197: ## Numerical Response Routines
198: ##
199: #########################################################
200: #########################################################
201: sub numerical_response_analysis {
202: my ($r,$problem,$problem_analysis,$students) = @_;
203: my $c = $r->connection();
204: #
205: if ($env{'form.AnalyzeOver'} !~ /^(tries|time)$/) {
206: $r->print('Bad request');
207: }
208: #
209: my ($resource,$partid,$respid) = ($problem->{'resource'},
210: $problem->{'part'},
211: $problem->{'respid'});
212: # Gather student data
213: my $response_data = &Apache::loncoursedata::get_response_data
214: ([&Apache::lonstatistics::get_selected_sections()],
215: [&Apache::lonstatistics::get_selected_groups()],
216: $Apache::lonstatistics::enrollment_status,
217: $resource->symb,$respid);
218: #
219: $problem_analysis->{'answercomputed'} = 1;
220: if ($problem_analysis->{'answercomputed'}) {
221: my $answers =
222: &Apache::lonstathelpers::GetStudentAnswers($r,$problem,$students,
223: 'Statistics',
224: 'stats_status');
225: $r->print(&numerical_one_dimensional_plot($r,600,150,$answers));
226: }
227: #
228: if (ref($response_data) ne 'ARRAY') {
229: $r->print('<div class="LC_warning">'
230: .&mt('There is no submission data for this resource.')
231: .'</div>'
232: );
233: return;
234: }
235: my $analysis_html = '<table>';
236: for (my $plot_num = 1;$plot_num<=$env{'form.NumPlots'};$plot_num++) {
237: my $restriction_function;
238: my $header_message;
239: my $stats_message;
240: my $post_message; # passed through &mt sooner rather than later
241: my $no_data_message;
242: my @extra_data;
243: if ($env{'form.AnalyzeOver'} eq 'tries') {
244: $restriction_function = sub {($_[0]->{'tries'} == $plot_num?1:0)};
245: $header_message = 'Attempt [_1]';
246: $stats_message =
247: '[_1] submissions, [_2] correct, [_3] incorrect';
248: $post_message = '';
249: $no_data_message = 'No data exists for attempt [_1].';
250: } else {
251: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
252: ('startdate_'.$plot_num);
253: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
254: ('enddate_'.$plot_num);
255: ($starttime,$endtime) = &ensure_start_end_times
256: ($starttime,$endtime,
257: &get_time_from_row($response_data->[0]),
258: &get_time_from_row($response_data->[-1]),
259: $plot_num);
260: $header_message = 'Data from [_2] to [_3]';
261: $extra_data[0] = &Apache::lonlocal::locallocaltime($starttime);
262: $extra_data[1] = &Apache::lonlocal::locallocaltime($endtime);
263: #
264: $stats_message =
265: '[_1] submissions from [_4] students, [_2] correct, [_3] incorrect';
266: #
267: $post_message =
268: &mt('Start time: [_1]',
269: &Apache::lonhtmlcommon::date_setter
270: ('Statistics','startdate_'.$plot_num,$starttime)).
271: '<br />'.
272: &mt('End time: [_1]',
273: &Apache::lonhtmlcommon::date_setter
274: ('Statistics','enddate_'.$plot_num,$endtime));
275: $restriction_function =
276: sub {
277: my $t = $_[0]->{'timestamp'};
278: if ($t >= $starttime && $t < $endtime) {
279: return 1;
280: } else {
281: return 0;
282: }
283: };
284: $no_data_message = 'No data for [_2] to [_3]';
285: }
286: #
287: my ($correct,$answers) =
288: &numerical_determine_answers($r,$resource,$partid,
289: $respid,$students);
290: if ($c->aborted()) { return; };
291: #
292: my ($responses,$stats) =
293: &numerical_classify_responses($response_data,$correct,
294: $restriction_function);
295: if ($stats->{'submission_count'} == 0) {
296: $analysis_html.=
297: '<tr><td colspan="2"><div class="LC_warning">'.
298: &mt($no_data_message,$plot_num,@extra_data).
299: '</div></td></tr>';
300: } else {
301: $analysis_html.=
302: '<tr><td colspan="2" align="center"><font size="+1"><b>'.
303: &mt($header_message,$plot_num,@extra_data).
304: '</b></font></td></tr>'.
305: '<tr><td colspan="2" align="center">'.
306: &mt($stats_message,
307: $stats->{'submission_count'},
308: $stats->{'correct_count'},
309: $stats->{'incorrect_count'},
310: $stats->{'students'},
311: @extra_data).
312: '</td></tr>'.
313: '<tr>'.'<td valign="top" align="center">'.
314: &numerical_plot_percent($r,$responses,$stats).'</td>'.
315: '<td align="center" valign="top">'.
316: &numerical_plot_differences($r,$responses,$stats).'</td>'.
317: '</tr>';
318: }
319: if ($post_message ne '') {
320: $analysis_html .=
321: '<tr><td colspan="2">'.$post_message.'</td></tr>';
322: }
323: }
324: $analysis_html.='</table>';
325: $r->print($analysis_html);
326: #
327: return;
328: }
329:
330: sub numerical_plot_percent {
331: my ($r,$responses,$stats) = @_;
332: #
333: my $total = $stats->{'submission_count'};
334: return '' if ($total == 0);
335: my $max_bins = 50;
336: my $lowest_percent = $stats->{'min_percent'};
337: my $highest_percent = $stats->{'max_percent'};
338: my $percent_spread = $highest_percent - $lowest_percent;
339: foreach (qw/20 30 40 50 100 200/) {
340: if ($percent_spread < $_) {
341: $highest_percent =$_/2;
342: last;
343: }
344: }
345: $percent_spread = $highest_percent - $lowest_percent;
346: my $bin_size = 1;
347: foreach (qw/0.01 0.05 0.1 0.5 1 2 5 10 20 25 50 100/) {
348: if ($lowest_percent/2 < $_){
349: $bin_size = $_;
350: if ( ($percent_spread/$bin_size) < $max_bins ) {
351: last;
352: }
353: }
354: }
355: my @bins;
356: for (my $bin = -$highest_percent;$bin<0;$bin+=$bin_size) {
357: push (@bins,$bin);
358: }
359: for (my $bin = 0; $bin<$highest_percent;$bin+=$bin_size) {
360: push (@bins,$bin);
361: }
362: push(@bins,$highest_percent);
363: #
364: my @correct;
365: my @incorrect;
366: my @count;
367: while (my ($ans,$submissions) = each(%$responses)) {
368: while (my ($submission,$counts) = each(%$submissions)) {
369: my ($correct_count,$incorrect_count) = @$counts;
370: my $scaled_value =
371: ($ans) ? 100*($submission-$ans)/abs($ans)
372: : 0;
373: if ($scaled_value < $bins[0]) {
374: $bins[0]=$scaled_value -1;
375: }
376: my $bin;
377: for ($bin=0;$bin<$#bins;$bin++) {
378: last if ($bins[$bin]>$scaled_value);
379: }
380: $correct[$bin-1]+=$correct_count;
381: $incorrect[$bin-1]+=$incorrect_count;
382: $count[$bin-1]+=$correct_count+$incorrect_count;
383: }
384: }
385: #
386: my @plot_correct = @correct;
387: my @plot_incorrect = @incorrect;
388: my $max;
389: for (my $i=0;$i<$#bins;$i++) {
390: $plot_correct[$i] *= 100/$total;
391: $plot_incorrect[$i] *= 100/$total;
392: if (! defined($max) ||
393: $max < $plot_correct[$i]+$plot_incorrect[$i] ) {
394: $max = $plot_correct[$i]+$plot_incorrect[$i];
395: }
396: }
397: foreach (qw/1 5 10 15 20 25 30 40 50 75 100/) {
398: if ($max <$_) { $max = $_; last; }
399: }
400: #
401: my $title = &mt('Percent Difference');
402: my @labels = (1..scalar(@bins)-1);
403: my $graph = &Apache::loncommon::DrawBarGraph
404: ($title,'Percent Difference from Correct','Percent of Answers',
405: $max,['#33FF00','#FF3300'],\@labels,\@plot_correct,\@plot_incorrect,
406: {xskip=>1});
407: #
408: my $table = $graph.$/.
409: &numerical_bin_table(\@bins,\@labels,\@incorrect,\@correct,\@count).$/;
410: return $table;
411: }
412:
413: sub numerical_plot_differences {
414: my ($r,$responses,$stats) = @_;
415: #
416: my $total = $stats->{'submission_count'};
417: return '' if ($total == 0);
418: my $max_bins = 21;
419: my $min_bin_size = $stats->{'min_abs'};
420: my $low_bin = $stats->{'lowest_ans'}-$stats->{'max_bin_size'};
421: my $high_bin = $stats->{'highest_ans'}+$stats->{'max_bin_size'};
422: if ($high_bin > 0 && $low_bin > -$high_bin) {
423: $low_bin = -$high_bin;
424: } elsif ($low_bin < 0 && $high_bin < -$low_bin) {
425: $high_bin = -$low_bin;
426: }
427: if ($high_bin == $low_bin) {
428: $high_bin+=1;
429: $low_bin-=1;
430: }
431: if (!$min_bin_size ||
432: ($high_bin -$low_bin)/$min_bin_size * 2 > $max_bins) {
433: $min_bin_size = abs($high_bin - $low_bin) / $max_bins * 2;
434: }
435: my @bins;
436: for (my $num = $low_bin;$num <= $high_bin;$num+=($min_bin_size/2)) {
437: push(@bins,$num);
438: }
439: #
440: my @correct;
441: my @incorrect;
442: my @count;
443: while (my ($ans,$submissions) = each(%$responses)) {
444: while (my ($submission,$counts) = each(%$submissions)) {
445: my ($correct_count,$incorrect_count) = @$counts;
446: my $scaled_value = $submission-$ans;
447: if ($scaled_value < $bins[0]) {
448: $bins[0]=$scaled_value-1;
449: }
450: my $bin=0;
451: for ($bin=0;$bin<$#bins;$bin++) {
452: last if ($bins[$bin]>$scaled_value);
453: }
454: $correct[$bin-1]+=$correct_count;
455: $incorrect[$bin-1]+=$incorrect_count;
456: $count[$bin-1]+=$correct_count+$incorrect_count;
457: }
458: }
459: my @plot_correct = @correct;
460: my @plot_incorrect = @incorrect;
461: my $max;
462: for (my $i=0;$i<=$#bins;$i++) {
463: $plot_correct[$i] *= 100/$total;
464: $plot_incorrect[$i] *= 100/$total;
465: if (! defined($max) ||
466: $max < $plot_correct[$i]+$plot_incorrect[$i] ) {
467: $max = $plot_correct[$i]+$plot_incorrect[$i];
468: }
469: }
470: foreach (qw/1 5 10 15 20 25 30 40 50 75 100/) {
471: if ($max <$_) { $max = $_; last; }
472: }
473: #
474: my $title = &mt('Difference between submission and correct');
475: my @labels = (1..scalar(@bins)-1);
476: my $graph = &Apache::loncommon::DrawBarGraph
477: ($title,'Difference from Correct','Percent of Answers',
478: $max,['#33FF00','#FF3300'],\@labels,\@plot_correct,\@plot_incorrect,
479: {xskip=>1});
480: #
481: my $table = $graph.$/.
482: &numerical_bin_table(\@bins,\@labels,\@incorrect,\@correct,\@count).$/;
483: return $table;
484: }
485:
486: sub numerical_classify_responses {
487: my ($full_row_data,$correct,$function) = @_;
488: my %submission_data;
489: my %students;
490: my %stats;
491: my $max=0;
492: foreach my $row (@$full_row_data) {
493: my %subm = &hashify_attempt($row);
494: if (ref($correct) eq 'HASH') {
495: my $s_correct = $correct->{$subm{'student'}};
496: $subm{'correct'} = $s_correct->{'answer'};
497: foreach my $item ('unit','ans_low','ans_high') {
498: $subm{$item} = $s_correct->{$item};
499: }
500: } else { # This probably never happens....
501: $subm{'correct'} = $correct->{'answer'};
502: $subm{'unit'} = $correct->{'unit'};
503: }
504: #
505: my $abs_low =abs($subm{'correct'}-$subm{'ans_low'});
506: my $abs_high=abs($subm{'correct'}-$subm{'ans_high'});
507: if (! defined($stats{'min_abs'}) ||
508: $stats{'min_abs'} > $abs_low) {
509: $stats{'min_abs'} = $abs_low;
510: }
511: if ($stats{'min_abs'} > $abs_high) {
512: $stats{'min_abs'} = $abs_high;
513: }
514: if (! defined($stats{'max_abs'}) ||
515: $stats{'max_abs'} < $abs_low) {
516: $stats{'max_abs'} = $abs_low;
517: }
518: if ($stats{'max_abs'} < $abs_high) {
519: $stats{'max_abs'} = $abs_high;
520: }
521: my $low_percent;
522: my $high_percent;
523: if (defined($subm{'correct'}) && $subm{'correct'} != 0) {
524: $low_percent = 100 * abs($abs_low / $subm{'correct'});
525: $high_percent = 100 * abs($abs_high / $subm{'correct'});
526: }
527: if (! defined($stats{'min_percent'}) ||
528: $stats{'min_percent'} > $low_percent) {
529: $stats{'min_percent'} = $low_percent;
530: }
531: if ($stats{'min_percent'} > $high_percent) {
532: $stats{'min_percent'} = $high_percent;
533: }
534: if (! defined($stats{'max_percent'}) ||
535: $stats{'max_percent'} < $low_percent) {
536: $stats{'max_percent'} = $low_percent;
537: }
538: if ($stats{'max_percent'} < $high_percent) {
539: $stats{'max_percent'} = $high_percent;
540: }
541: if (! defined($stats{'lowest_ans'}) ||
542: $stats{'lowest_ans'} > $subm{'correct'}) {
543: $stats{'lowest_ans'} = $subm{'correct'};
544: }
545: if (! defined($stats{'highest_ans'}) ||
546: $stats{'highest_ans'} < $subm{'correct'}) {
547: $stats{'highest_ans'} = $subm{'correct'};
548: }
549: #
550: $subm{'submission'} =~ s/=\d+\s*$//;
551: if (&$function(\%subm)) {
552: my $scaled = '1';
553: my ($sname,$sdom) = split(':',$subm{'student'});
554: my ($myunit,$mysub) = ($subm{'unit'},$subm{'submission'});
555: my $result =
556: &capa::caparesponse_get_real_response($myunit,
557: $mysub,
558: \$scaled);
559: # &Apache::lonnet::logthis('scaled = '.$scaled.' result ='.$result);
560: next if (! defined($scaled));
561: # next if ($result ne '6');
562: my $submission = $scaled;
563: $students{$subm{'student'}}++;
564: $stats{'submission_count'}++;
565: if (&numerical_submission_is_correct($subm{'award'})) {
566: $stats{'correct_count'}++;
567: $submission_data{$subm{'correct'}}->{$submission}->[0]++;
568: } elsif (&numerical_submission_is_incorrect($subm{'award'})) {
569: $stats{'incorrect_count'}++;
570: $submission_data{$subm{'correct'}}->{$submission}->[1]++;
571: }
572: }
573: }
574: $stats{'correct_count'} |= 0;
575: $stats{'incorrect_count'} |= 0;
576: $stats{'students'}=scalar(keys(%students));
577: return (\%submission_data,\%stats);
578: }
579:
580: sub numerical_submission_is_correct {
581: my ($award) = @_;
582: if ($award =~ /^(APPROX_ANS|EXACT_ANS)$/) {
583: return 1;
584: } else {
585: return 0;
586: }
587: }
588:
589: sub numerical_submission_is_incorrect {
590: my ($award) = @_;
591: if ($award =~ /^(INCORRECT)$/) {
592: return 1;
593: } else {
594: return 0;
595: }
596: }
597:
598: sub numerical_bin_table {
599: my ($bins,$labels,$incorrect,$correct,$count)=@_;
600: my $table =
601: '<table><tr><th>'.&mt('Bar').'</th>'.
602: '<th colspan="3">'.&mt('Range').'</th>'.
603: '<th>'.&mt('Incorrect').'</th>'.
604: '<th>'.&mt('Correct').'</th>'.
605: '<th>'.&mt('Count').'</th>'.
606: '</tr>'.$/;
607: for (my $i=0;$i<scalar(@{$bins}-1);$i++) {
608: my $lownum = $bins->[$i];
609: if ($i == 0) { $lownum = '-∞'; }
610: my $highnum = $bins->[$i+1];
611: if ($i == scalar(@{$bins})-2) { $highnum = '∞'; }
612: $table .=
613: '<tr>'.
614: '<td>'.$labels->[$i].'</td>'.
615: '<td align="right">'.$lownum.'</td>'.
616: '<td> - </td>'.
617: '<td align="right">'.$highnum.'</td>'.
618: '<td align="right">'.$incorrect->[$i].'</td>'.
619: '<td align="right">'.$correct->[$i].'</td>'.
620: '<td align="right">'.$count->[$i].'</td>'.
621: '</tr>'.$/;
622: }
623: $table.= '</table>';
624: return $table;
625: }
626:
627: sub numerical_determine_answers {
628: my ($r,$resource,$partid,$respid,$students)=@_;
629: my $c = $r->connection();
630: #
631: my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin($r,scalar(@$students));
632: #
633: # Read in the cache (if it exists) before we start timing things.
634: &Apache::lonstathelpers::ensure_proper_cache($resource->{'symb'});
635: #
636: my $correct;
637: my %answers;
638: foreach my $student (@$students) {
639: last if ($c->aborted());
640: my $sname = $student->{'username'};
641: my $sdom = $student->{'domain'};
642: # analyze problem
643: my $analysis =
644: &Apache::lonstathelpers::analyze_problem_as_student($resource,
645: $sname,
646: $sdom);
647: # make the key
648: my $key = $partid.'.'.$respid;
649: # pick one of the possible answers
650: my $which = 'INTERNAL';
651: if (!exists($analysis->{$key}{$which})) {
652: $which = (sort(keys(%{ $analysis->{$key} })))[0];
653: }
654: foreach my $item ('answer','unit','ans_high','ans_low') {
655: if (ref($analysis->{$key.'.'.$item}) eq 'ARRAY') {
656: $correct->{$sname.':'.$sdom}->{$item} =
657: $analysis->{$key.'.'.$item}[0];
658: } else {
659: $correct->{$sname.':'.$sdom}->{$item} =
660: $analysis->{$key.'.'.$item}{$which}[0][0];
661: }
662: }
663: $answers{$correct->{$sname.':'.$sdom}{'answer'}}++;
664: &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
665: 'last student');
666: }
667: &Apache::lonstathelpers::write_analysis_cache();
668: &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
669: return ($correct,\%answers);
670: }
671:
672: #
673: # Inputs: $r, $width, $height, $data
674: # $n = number of students
675: # $data = hashref of $answer => $frequency pairs
676: sub numerical_one_dimensional_plot {
677: my ($r,$width,$height,$data)=@_;
678: #
679: # Compute data -> image scaling factors
680: my $max_y = 0;
681: my $min_x = undef;
682: my $max_x = undef;
683: my $n = 0;
684: while (my ($answer,$count) = each(%$data)) {
685: $n+=$count;
686: $max_y = $count if ($max_y < $count);
687: if (! defined($min_x) || $answer < $min_x) {
688: $min_x = $answer;
689: }
690: if (! defined($max_x) || $answer > $max_x) {
691: $max_x = $answer;
692: }
693: }
694: #
695: my $min_max_difference = $max_x - $min_x;
696: if (! defined($min_max_difference) || $min_max_difference == 0) {
697: $min_max_difference = 1;
698: }
699: my $h_scale = ($width-10)/$min_max_difference;
700: #
701: my $ticscale = 5;
702: if ($max_y * $ticscale > $height/2) {
703: $ticscale = int($height/2/$max_y);
704: $ticscale = 1 if ($ticscale < 1);
705: }
706: #
707: # Create the plot
708: my $plot =
709: qq{<drawimage width="$width" height="$height" bgcolor="transparent" >};
710: while (my ($answer,$count) = each(%$data)) {
711: my $xloc = 5+$h_scale*($answer - $min_x);
712: my $top = $height/2-$count*$ticscale;
713: my $bottom = $height/2+$count*$ticscale;
714: $plot .= &line($xloc,$top,$xloc,$bottom,'888888',1);
715: }
716: #
717: # Put the scale on last to ensure it is on top of the data.
718: if ($min_x < 0 && $max_x > 0) {
719: my $circle_x = 5+$h_scale*abs($min_x); # '0' in data coordinates
720: my $r = 4;
721: $plot .= &line(5,$height/2,$circle_x-$r,$height/2,'000000',1);
722: $plot .= &circle($circle_x,$height/2,$r+1,'000000');
723: $plot .= &line($circle_x+$r,$height/2,$width-5,$height/2,'000000',1);
724: } else {
725: $plot .= &line(5,$height/2,$width-5,$height/2,'000000',1);
726: }
727: $plot .= '</drawimage>';
728: my $plotresult = &Apache::lonxml::xmlparse($r,'web',$plot);
729: my $result = '<table>'.
730: '<tr><td colspan="3" align="center">'.
731: '<font size="+2">'.&mt('Distribution of correct answers').'</font>'.
732: '<br />'.&mt('[_1] students, [_2] distinct correct answers',
733: $n,scalar(keys(%$data))).
734: '<br />'.&mt('Maximum number of coinciding values: [_1]',$max_y).
735: '</td></tr>'.
736: '<tr>'.
737: '<td valign="center">'.$min_x.'</td>'.
738: '<td>'.$plotresult.'</td>'.
739: '<td valign="center">'.$max_x.'</td>'.
740: '</tr>'.
741: '</table>';
742: return $result;
743: }
744:
745: ##
746: ## Helper subroutines for <drawimage>.
747: ## These should probably go somewhere more suitable soon.
748: sub line {
749: my ($x1,$y1,$x2,$y2,$color,$thickness) = @_;
750: return qq{<line x1="$x1" y1="$y1" x2="$x2" y2="$y2" color="$color" thickness="$thickness" />};
751: }
752:
753: sub text {
754: my ($x,$y,$color,$text,$font,$direction) = @_;
755: if (! defined($font) || $font !~ /^(tiny|small|medium|large|giant)$/) {
756: $font = 'medium';
757: }
758: if (! defined($direction) || $direction ne 'vertical') {
759: $direction = '';
760: }
761: return qq{<text x="$x" y="$y" color="$color" font="$font" direction="$direction" >$text</text>};
762: }
763:
764: sub rectangle {
765: my ($x1,$y1,$x2,$y2,$color,$thickness,$filled) = @_;
766: return qq{<rectangle x1="$x1" y1="$y1" x2="$x2" y2="$y2" color="$color" thickness="$thickness" filled="$filled" />};
767: }
768:
769: sub arc {
770: my ($x,$y,$width,$height,$start,$end,$color,$thickness,$filled)=@_;
771: return qq{<arc x="$x" y="$y" width="$width" height="$height" start="$start" end="$end" color="$color" thickness="$thickness" filled="$filled" />};
772: }
773:
774: sub circle {
775: my ($x,$y,$radius,$color,$thickness,$filled)=@_;
776: return &arc($x,$y,$radius,$radius,0,360,$color,$thickness,$filled);
777: }
778:
779: #########################################################
780: #########################################################
781: ##
782: ## Radio Response Routines
783: ##
784: #########################################################
785: #########################################################
786: sub radio_response_analysis {
787: my ($r,$problem,$problem_analysis,$students) = @_;
788: #
789: if ($env{'form.AnalyzeOver'} !~ /^(tries|time)$/) {
790: $r->print('Bad request');
791: }
792: #
793: my ($resource,$partid,$respid) = ($problem->{'resource'},
794: $problem->{'part'},
795: $problem->{'respid'});
796: #
797: my $analysis_html;
798: my $foildata = $problem_analysis->{'_Foils'};
799: my ($table,$foils,$concepts) = &build_foil_index($problem_analysis);
800: if (! defined($concepts)) {
801: $concepts = [];
802: }
803: #
804: my %true_foils;
805: my $num_true = 0;
806: if (! $problem_analysis->{'answercomputed'}) {
807: foreach my $foil (@$foils) {
808: if ($foildata->{$foil}->{'value'} eq 'true') {
809: $true_foils{$foil}++;
810: }
811: }
812: $num_true = scalar(keys(%true_foils));
813: }
814: #
815: $analysis_html .= $table;
816: # Gather student data
817: my $response_data = &Apache::loncoursedata::get_response_data
818: ([&Apache::lonstatistics::get_selected_sections()],
819: [&Apache::lonstatistics::get_selected_groups()],
820: $Apache::lonstatistics::enrollment_status,
821: $resource->symb,$respid);
822: my $correct; # either a hash reference or a scalar
823: if ($problem_analysis->{'answercomputed'} || scalar(@$concepts) > 1) {
824: # This takes a while for large classes...
825: &Apache::lonstathelpers::GetStudentAnswers($r,$problem,$students,
826: 'Statistics',
827: 'stats_status');
828: foreach my $student (@$students) {
829: my ($idx,@remainder) = split('&',$student->{'answer'});
830: my ($answer) = ($remainder[$idx]=~/^(.*)=([^=]*)$/);
831: $correct->{$student->{'username'}.':'.$student->{'domain'}}=
832: &unescape($answer);
833: }
834: } else {
835: foreach my $foil (keys(%$foildata)) {
836: if ($foildata->{$foil}->{'value'} eq 'true') {
837: $correct = $foildata->{$foil}->{'name'};
838: }
839: }
840: }
841: #
842: if (! defined($response_data) || ref($response_data) ne 'ARRAY' ) {
843: $analysis_html = '<div class="LC_warning">'
844: .&mt('There is no submission data for this resource.')
845: .'</div>';
846: $r->print($analysis_html);
847: return;
848: }
849: #
850: $analysis_html.='<table>';
851: for (my $plot_num = 1;$plot_num<=$env{'form.NumPlots'};$plot_num++) {
852: # classify data ->correct foil -> selected foil
853: my ($restriction_function,
854: $correct_foil_title,$incorrect_foil_title,
855: $pre_graph_text,$post_graph_text,
856: $no_data_text,@extra_data);
857: if ($env{'form.AnalyzeOver'} eq 'tries') {
858: $restriction_function = sub {($_[0]->{'tries'} == $plot_num?1:0)};
859: $correct_foil_title = 'Attempt '.$plot_num;
860: $incorrect_foil_title = 'Attempt '.$plot_num;
861: $pre_graph_text =
862: 'Attempt [_1], [_2] submissions, [_3] correct, [_4] incorrect';
863: $post_graph_text = '';
864: $no_data_text = 'No data exists for attempt [_1]';
865: } elsif ($env{'form.AnalyzeOver'} eq 'time') {
866: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
867: ('startdate_'.$plot_num);
868: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
869: ('enddate_'.$plot_num);
870: ($starttime,$endtime) = &ensure_start_end_times
871: ($starttime,$endtime,
872: &get_time_from_row($response_data->[0]),
873: &get_time_from_row($response_data->[-1]),
874: $plot_num);
875: $pre_graph_text =
876: 'Data from [_6] to [_7]'
877: .'<br />'
878: .'[_2] submissions from [_5] students, [_3] correct, [_4] incorrect';
879: $extra_data[0] = &Apache::lonlocal::locallocaltime($starttime);
880: $extra_data[1] = &Apache::lonlocal::locallocaltime($endtime);
881: #
882: $post_graph_text =
883: &mt('Start time: [_1]',
884: &Apache::lonhtmlcommon::date_setter
885: ('Statistics','startdate_'.$plot_num,$starttime)).
886: '<br />'.
887: &mt('End time: [_1]',
888: &Apache::lonhtmlcommon::date_setter
889: ('Statistics','enddate_'.$plot_num,$endtime));
890: $restriction_function =
891: sub {
892: my $t = $_[0]->{'timestamp'};
893: if ($t >= $starttime && $t < $endtime) {
894: return 1;
895: } else {
896: return 0;
897: }
898: };
899: $no_data_text = 'No data for [_5] to [_6]';
900: }
901: my $foil_choice_data =
902: &classify_response_data($response_data,$correct,
903: $restriction_function);
904: # &Apache::lonstathelpers::log_hash_ref($foil_choice_data);
905: my $answers;
906: if (ref($correct)) {
907: my %tmp;
908: foreach my $foil (values(%$correct)) {
909: $tmp{$foil}++;
910: }
911: $answers = [keys(%tmp)];
912: } else {
913: $answers = [$correct];
914: }
915: # Concept Plot
916: my $concept_plot = '';
917: if (scalar(@$concepts) > 1) {
918: $concept_plot = &RR_concept_plot($concepts,$foil_choice_data,
919: 'Correct Concepts');
920: }
921: # % Choosing plot
922: my $choice_plot = &RR_create_percent_selected_plot
923: ($concepts,$foils,$foil_choice_data,$correct_foil_title);
924: # for each correct foil, how did they mark it? (stacked bar graph)
925: my ($stacked_plot,$count_by_foil);
926: if ($problem_analysis->{'answercomputed'} || $num_true > 1) {
927: ($stacked_plot,$count_by_foil) =
928: &RR_create_stacked_selection_plot($foils,$foil_choice_data,
929: $incorrect_foil_title,
930: \%true_foils);
931: }
932: #
933: if ($concept_plot ne '' ||
934: $choice_plot ne '' ||
935: $stacked_plot ne '') {
936: my $correct = $foil_choice_data->{'_correct'};
937: $correct |= 0;
938: my $incorrect = $foil_choice_data->{'_count'}-$correct;
939: $analysis_html.= '<tr><td colspan="4" align="center">'.
940: '<font size="+1">'.
941: &mt($pre_graph_text,
942: $plot_num,$foil_choice_data->{'_count'},
943: $correct,
944: $incorrect,
945: $foil_choice_data->{'_students'},
946: @extra_data).
947: '</td></tr>'.$/;
948: $analysis_html.=
949: '<tr>'.
950: '<td>'.$concept_plot.'</td>'.
951: '<td>'.$choice_plot.'</td>';
952: if ($stacked_plot ne '') {
953: $analysis_html .=
954: '<td>'.$stacked_plot.'</td>'.
955: '<td>'.&build_foil_key($foils,$count_by_foil).'</td>';
956: } else {
957: $analysis_html .= ('<td></td>'x2);
958: }
959: $analysis_html.='</tr>'.$/;
960: if (defined($post_graph_text)) {
961: $analysis_html.= '<tr><td colspan="4" align="center">'.
962: $post_graph_text.'</td></tr>'.$/;
963: }
964: } elsif ($no_data_text ne '') {
965: $analysis_html.='<tr><td colspan="4" align="center">'.
966: '<div class="LC_warning">'.
967: &mt($no_data_text,
968: $plot_num,$foil_choice_data->{'_count'},
969: $correct,
970: $foil_choice_data->{'_count'}-$correct,
971: @extra_data).
972: '</div>';
973: if (defined($post_graph_text)) {
974: $analysis_html.='<br />'.$post_graph_text;
975: }
976: $analysis_html.='</td></tr>'.$/;
977: }
978: } # end of loop for plots
979: $analysis_html.='</table>';
980: $r->print($analysis_html);
981: }
982:
983: sub ensure_start_end_times {
984: my ($start,$end,$first,$last,$plot_num) = @_;
985: if (! defined($start) || ! defined($end)) {
986: my $sec_in_day = 86400;
987: my ($sday,$smon,$syear) =
988: (localtime($last - $sec_in_day*($plot_num-1)))[3..5];
989: $start = &Time::Local::timelocal(0,0,0,$sday,$smon,$syear);
990: $end = $start + $sec_in_day;
991: if ($plot_num == $env{'form.NumPlots'}) {
992: $start = $first;
993: }
994: }
995: return ($start,$end);
996: }
997:
998: sub RR_concept_plot {
999: my ($concepts,$foil_data,$title) = @_;
1000: #
1001: my %correct_by_concept;
1002: my %incorrect_by_concept;
1003: my %true;
1004: foreach my $concept (@$concepts) {
1005: foreach my $foil (@{$concept->{'foils'}}) {
1006: next if (! exists($foil_data->{$foil}));
1007: foreach my $choice (keys(%{$foil_data->{$foil}})) {
1008: if ($choice eq $foil) {
1009: $correct_by_concept{$concept->{'name'}} +=
1010: $foil_data->{$foil}->{$choice};
1011: } else {
1012: $incorrect_by_concept{$concept->{'name'}} +=
1013: $foil_data->{$foil}->{$choice};
1014: }
1015: }
1016: }
1017: }
1018: #
1019: # need arrays for incorrect and correct because we want to use different
1020: # colors for them
1021: my @correct;
1022: #
1023: my $total =0;
1024: for (my $i=0;$i<scalar(@$concepts);$i++) {
1025: my $concept = $concepts->[$i];
1026: $correct[$i] = $correct_by_concept{$concept->{'name'}};
1027: $total += $correct_by_concept{$concept->{'name'}}+
1028: $incorrect_by_concept{$concept->{'name'}};
1029: }
1030: if ($total == 0) { return ''; };
1031: for (my $i=0;$i<=$#correct;$i++) {
1032: $correct[$i] = sprintf('%0f',$correct[$i]/$total*100);
1033: }
1034: my $xlabel = 'concept';
1035: my $plot= &Apache::loncommon::DrawBarGraph($title,
1036: $xlabel,
1037: 'Percent Choosing',
1038: 100,
1039: ['#33ff00','#ff3300'],
1040: undef,
1041: \@correct);
1042: return $plot;
1043: }
1044:
1045: sub RR_create_percent_selected_plot {
1046: my ($concepts,$foils,$foil_data,$title) = @_;
1047: #
1048: if ($foil_data->{'_count'} == 0) { return ''; };
1049: my %correct_selections;
1050: my %incorrect_selections;
1051: foreach my $foil (@$foils) {
1052: # foil_data has format $foil_data->{true_foil}->{selected foil}=count
1053: next if (! exists($foil_data->{$foil}));
1054: while (my ($f,$count)= each(%{$foil_data->{$foil}})) {
1055: if ($f eq $foil) {
1056: $correct_selections{$foil} += $count;
1057: } else {
1058: $incorrect_selections{$f} += $count;
1059: }
1060: }
1061: }
1062: #
1063: # need arrays for incorrect and correct because we want to use different
1064: # colors for them
1065: my @correct;
1066: my @incorrect;
1067: #
1068: my $total = $foil_data->{'_count'};
1069: for (my $i=0;$i<scalar(@$foils);$i++) {
1070: my $foil = $foils->[$i];
1071: $correct[$i] = $correct_selections{$foil};
1072: $incorrect[$i] = $incorrect_selections{$foil};
1073: }
1074: for (my $i=0;$i<=$#correct;$i++) {
1075: $correct[$i] = sprintf('%2f',$correct[$i]/$total*100);
1076: }
1077: for (my $i=0;$i<=$#incorrect;$i++) {
1078: $incorrect[$i] = sprintf('%2f',$incorrect[$i]/$total*100);
1079: }
1080: #
1081: # Put a blank in the data sets between concepts, if there are concepts
1082: my @labels;
1083: if (defined($concepts) && scalar(@$concepts) > 1) {
1084: my @new_correct;
1085: my @new_incorrect;
1086: my $foil_count = 0;
1087: foreach my $concept (@$concepts) {
1088: foreach (@{$concept->{'foils'}}) {
1089: push(@new_correct, $correct[$foil_count]);
1090: push(@new_incorrect,$incorrect[$foil_count]);
1091: push(@labels,++$foil_count);
1092: }
1093: push(@new_correct,'');
1094: push(@new_incorrect,'');
1095: push(@labels,'');
1096: }
1097: @correct = @new_correct;
1098: @incorrect = @new_incorrect;
1099: } else {
1100: @labels = (1 .. scalar(@correct));
1101: }
1102: #
1103: my $xlabel = 'foil chosen';
1104: my $plot= &Apache::loncommon::DrawBarGraph($title,
1105: $xlabel,
1106: 'Percent Choosing',
1107: 100,
1108: ['#33ff00','#ff3300'],
1109: \@labels,
1110: \@correct,
1111: \@incorrect);
1112: return $plot;
1113: }
1114:
1115: sub RR_create_stacked_selection_plot {
1116: my ($foils,$foil_data,$title,$true_foils)=@_;
1117: #
1118: my @dataset; # array of array refs - multicolor rows $datasets[row]->[col]
1119: my @labels;
1120: my $count;
1121: my %column; # maps foil name to column in @datasets
1122: for (my $i=0;$i<scalar(@$foils);$i++) {
1123: my $foil = $foils->[$i];
1124: if (defined($true_foils) && scalar(keys(%$true_foils)) > 0 ) {
1125: next if (! $true_foils->{$foil} );
1126: push(@labels,$i+1);
1127: } else {
1128: next if (! exists($foil_data->{$foil}));
1129: push(@labels,$i+1);
1130: }
1131: next if (! exists($foil_data->{$foils->[$i]}));
1132: $column{$foil}= $count++;
1133: for (my $j=0;$j<scalar(@$foils);$j++) {
1134: my $value = 0;
1135: if ($i != $j ) {
1136: $value += $foil_data->{$foil}->{$foils->[$j]};
1137: }
1138: $dataset[$j]->[$column{$foil}]=$value;
1139: }
1140: }
1141: #
1142: return '' if (! scalar(keys(%column)));
1143: #
1144: my $grand_total = 0;
1145: my %count_per_foil;
1146: while (my ($foil,$bar) = each (%column)) {
1147: my $bar_total = 0;
1148: for (my $j=0;$j<scalar(@dataset);$j++) {
1149: $bar_total += $dataset[$j]->[$bar];
1150: }
1151: next if ($bar_total == 0);
1152: for (my $j=0;$j<scalar(@dataset);$j++) {
1153: $dataset[$j]->[$bar] =
1154: sprintf('%2f',$dataset[$j]->[$bar]/$bar_total * 100);
1155: }
1156: $count_per_foil{$foil}=' ( '.$bar_total.' )';
1157: $grand_total += $bar_total;
1158: }
1159: if ($grand_total == 0) {
1160: return ('',undef);
1161: }
1162: my @empty_row = ();
1163: foreach (@{$dataset[0]}) {
1164: push(@empty_row,0);
1165: }
1166: #
1167: my $graph = &Apache::loncommon::DrawBarGraph
1168: ($title,'Correct Foil','foils chosen Incorrectly',
1169: 100,$plotcolors,\@labels,\@empty_row,@dataset);
1170: return ($graph,\%count_per_foil);
1171: }
1172:
1173:
1174: #########################################################
1175: #########################################################
1176: ##
1177: ## Misc routines
1178: ##
1179: #########################################################
1180: #########################################################
1181:
1182: # if $correct is a hash ref, it is assumed to be indexed by student names.
1183: # the values are assumed to be hash refs with a key of 'answer'.
1184: sub classify_response_data {
1185: my ($full_row_data,$correct,$function) = @_;
1186: my %submission_data;
1187: my %students;
1188: my $max=0;
1189: foreach my $row (@$full_row_data) {
1190: my %subm = &hashify_attempt($row);
1191: if (ref($correct) eq 'HASH') {
1192: $subm{'correct'} = $correct->{$subm{'student'}};
1193: } else {
1194: $subm{'correct'} = $correct;
1195: }
1196: $subm{'submission'} =~ s/=\d+\s*$//;
1197: if (&$function(\%subm)) {
1198: $students{$subm{'student'}}++;
1199: $submission_data{'_count'}++;
1200: if (&submission_is_correct($subm{'award'})) {
1201: $submission_data{'_correct'}++;
1202: }
1203:
1204: if($max<++$submission_data{$subm{'correct'}}->{$subm{'submission'}}) {
1205: $max=$submission_data{$subm{'correct'}}->{$subm{'submission'}};
1206: }
1207: }
1208: }
1209: $submission_data{'_max'} = $max;
1210: $submission_data{'_students'}=scalar(keys(%students));
1211: return \%submission_data;
1212: }
1213:
1214:
1215: #########################################################
1216: #########################################################
1217: ##
1218: ## Option Response Routines
1219: ##
1220: #########################################################
1221: #########################################################
1222: sub OptionResponseAnalysis {
1223: my ($r,$problem,$problem_data,$Students) = @_;
1224: my ($resource,$respid) = ($problem->{'resource'},
1225: $problem->{'respid'});
1226: # Note: part data is not needed.
1227: my $PerformanceData = &Apache::loncoursedata::get_response_data
1228: ([&Apache::lonstatistics::get_selected_sections()],
1229: [&Apache::lonstatistics::get_selected_groups()],
1230: $Apache::lonstatistics::enrollment_status,
1231: $resource->symb,$respid);
1232: if (! defined($PerformanceData) ||
1233: ref($PerformanceData) ne 'ARRAY' ) {
1234: $r->print('<div class="LC_warning">'
1235: .&mt('There is no student data for this problem.')
1236: .'</div>'
1237: );
1238: } else {
1239: $r->rflush();
1240: if ($env{'form.AnalyzeOver'} eq 'tries') {
1241: my $analysis_html = &OR_tries_analysis($r,
1242: $PerformanceData,
1243: $problem_data);
1244: $r->print($analysis_html);
1245: $r->rflush();
1246: } elsif ($env{'form.AnalyzeOver'} eq 'time') {
1247: my $analysis_html = &OR_time_analysis($PerformanceData,
1248: $problem_data);
1249: $r->print($analysis_html);
1250: $r->rflush();
1251: } else {
1252: $r->print('div class="LC_warning"'
1253: .&mt('The analysis you have selected is not supported at this time.')
1254: .'</div>'
1255: );
1256: }
1257: }
1258: }
1259:
1260: #########################################################
1261: #
1262: # Option Response: tries Analysis
1263: #
1264: #########################################################
1265: sub OR_tries_analysis {
1266: my ($r,$PerformanceData,$ORdata) = @_;
1267: my $mintries = 1;
1268: my $maxtries = $env{'form.NumPlots'};
1269: my ($table,$Foils,$Concepts) = &build_foil_index($ORdata);
1270: if (! defined($Concepts)) {
1271: $Concepts = [];
1272: }
1273: my %response_data = &OR_analyze_by_tries($r,$PerformanceData,
1274: $mintries,$maxtries);
1275: my $analysis = '';
1276: #
1277: # Compute the data necessary to make the plots
1278: my @foil_plot;
1279: my @concept_data;
1280: for (my $j=0;$j<=scalar(@$Concepts);$j++) {
1281: my $concept = $Concepts->[$j];
1282: foreach my $foilid (@{$concept->{'foils'}}) {
1283: for (my $try=$mintries;$try<=$maxtries;$try++) {
1284: # concept analysis data
1285: $concept_data[$j]->[$try]->{'_correct'} +=
1286: $response_data{$foilid}->[$try]->{'_correct'};
1287: $concept_data[$j]->[$try]->{'_total'} +=
1288: $response_data{$foilid}->[$try]->{'_total'};
1289: #
1290: # foil analysis data
1291: if ($response_data{$foilid}->[$try]->{'_total'} == 0) {
1292: push(@{$foil_plot[$try]->{'_correct'}},0);
1293: } else {
1294: push(@{$foil_plot[$try]->{'_correct'}},
1295: 100*$response_data{$foilid}->[$try]->{'_correct'}/
1296: $response_data{$foilid}->[$try]->{'_total'});
1297: }
1298: foreach my $option (@{$ORdata->{'_Options'}}) {
1299: push(@{$foil_plot[$try]->{'_total'}},
1300: $response_data{$foilid}->[$try]->{'_total'});
1301: if ($response_data{$foilid}->[$try]->{'_total'} == 0) {
1302: push (@{$foil_plot[$try]->{$option}},0);
1303: } else {
1304: if ($response_data{$foilid}->[$try]->{'_total'} ==
1305: $response_data{$foilid}->[$try]->{'_correct'}) {
1306: push(@{$foil_plot[$try]->{$option}},0);
1307: } else {
1308: push (@{$foil_plot[$try]->{$option}},
1309: 100 *
1310: $response_data{$foilid}->[$try]->{$option} /
1311: ($response_data{$foilid}->[$try]->{'_total'}
1312: -
1313: $response_data{$foilid}->[$try]->{'_correct'}
1314: ));
1315: }
1316: }
1317: } # End of foreach my $option
1318: }
1319: } # End of foreach my $foilid
1320: } # End of concept loops
1321: #
1322: # Build a table for the plots
1323: my $analysis_html = "<br /><table>\n";
1324: my $optionkey = &build_option_index($ORdata);
1325: my $num_concepts = 1;
1326: if (defined($Concepts)) { $num_concepts = scalar(@$Concepts); }
1327: #
1328: for (my $try=$mintries;$try<=$maxtries;$try++) {
1329: if (! defined($response_data{'_total'}->[$try]) ||
1330: $response_data{'_total'}->[$try] == 0) {
1331: if ($try > 1) {
1332: $analysis_html.= '<tr><td colspan="4">'
1333: .'<div class="LC_info">'
1334: .&mt('None of the selected students attempted the problem more than [quant,_1,time].'
1335: ,$try-1)
1336: .'</div>'
1337: .'</td></tr>';
1338: } else {
1339: $analysis_html.= '<tr><td colspan="4">'
1340: .'<div class="LC_info">'
1341: .&mt('None of the selected students have attempted the problem.')
1342: .'</div>'
1343: .'</td></tr>';
1344: }
1345: last;
1346: }
1347: my $concept_graph='';
1348: if ($num_concepts > 1) {
1349: #
1350: # Create concept plot
1351: my @concept_plot_data;
1352: for (my $j=0;$j<=$#concept_data;$j++) {
1353: my $total = $concept_data[$j]->[$try]->{'_total'};
1354: if ($total == 0) {
1355: $concept_plot_data[$j] = 0;
1356: } else {
1357: $concept_plot_data[$j] = 100 *
1358: sprintf('%0.3f',
1359: $concept_data[$j]->[$try]->{'_correct'} /
1360: $total);
1361: }
1362: }
1363: #
1364: $concept_graph = &Apache::loncommon::DrawBarGraph
1365: ('Correct Concepts','Concept Number','Percent Correct',
1366: 100,$plotcolors,undef,\@concept_plot_data,{xskip=>1});
1367: }
1368: #
1369: # Create Foil Plots
1370: my $data_count = $response_data{'_total'}->[$try];
1371: my $correct = $response_data{'_correct'}->[$try];
1372: $correct |= 0;
1373: my @Datasets;
1374: foreach my $option ('_correct',@{$ORdata->{'_Options'}}) {
1375: next if (! exists($foil_plot[$try]->{$option}));
1376: push(@Datasets,$foil_plot[$try]->{$option});
1377: }
1378: #
1379: # Put a blank in the data set between concepts
1380: for (my $set =0;$set<=$#Datasets;$set++) {
1381: my @Data = @{$Datasets[$set]};
1382: my $idx = 0;
1383: foreach my $concept (@{$Concepts}) {
1384: foreach my $foilid (@{$concept->{'foils'}}) {
1385: $Datasets[$set]->[$idx++]=shift(@Data);
1386: }
1387: if ($concept->{'name'} ne $Concepts->[-1]->{'name'}) {
1388: $Datasets[$set]->[$idx++] = 0;
1389: }
1390: }
1391: }
1392: #
1393: # Set up the labels needed for the bar graph
1394: my @Labels;
1395: my $idx = 1;
1396: foreach my $concept (@{$Concepts}) {
1397: foreach my $foilid (@{$concept->{'foils'}}) {
1398: push(@Labels,$idx++);
1399: }
1400: push(@Labels,'');
1401: }
1402: #
1403: my $correct_graph = &Apache::loncommon::DrawBarGraph
1404: ('Correct Statements','Statement','% Answered Correct',
1405: 100,$plotcolors,\@Labels,$Datasets[0],{xskip=>1});
1406:
1407: #
1408: #
1409: next if (! defined($Datasets[0]));
1410: for (my $i=0; $i< scalar(@{$Datasets[0]});$i++) {
1411: $Datasets[0]->[$i]=0;
1412: }
1413: my $count = $response_data{'_total'}->[$try] -
1414: $response_data{'_correct'}->[$try];
1415: my $incorrect_graph = &Apache::loncommon::DrawBarGraph
1416: ('Incorrect Statements','Statement','% Chosen Incorrectly',
1417: 100,$plotcolors,\@Labels,@Datasets,{xskip=>1});
1418: $analysis_html.=
1419: '<tr><td colspan="4" align="center">'.
1420: '<font size="+1">'.
1421: &mt('Attempt [_1], [_2] submissions, [_3] correct, [_4] incorrect',
1422: $try,$data_count,$correct,$data_count-$correct).
1423: '</font>'.'</td></tr>'.$/.
1424: '<tr>'.
1425: '<td>'.$concept_graph.'</td>'.
1426: '<td>'.$correct_graph.'</td>'.
1427: '<td>'.$incorrect_graph.'</td>'.
1428: '<td>'.$optionkey.'<td>'.
1429: '</tr>'.$/;
1430: }
1431: $analysis_html .= "</table>\n";
1432: $table .= $analysis_html;
1433: return $table;
1434: }
1435:
1436: sub OR_analyze_by_tries {
1437: my ($r,$PerformanceData,$mintries,$maxtries) = @_;
1438: my %Trydata;
1439: $mintries = 1 if (! defined($mintries) || $mintries < 1);
1440: $maxtries = $mintries if (! defined($maxtries) || $maxtries < $mintries);
1441: my @students;
1442: foreach my $row (@$PerformanceData) {
1443: next if (! defined($row));
1444: my $tries = &get_tries_from_row($row);
1445: my %Row = &Process_OR_Row($row);
1446: next if (! %Row);
1447: my $student_id = $row->[&Apache::loncoursedata::RD_student_id()];
1448: $students[$tries]->{$student_id}++;
1449: while (my ($foilid,$href) = each(%Row)) {
1450: if (! ref($href)) {
1451: $Trydata{$foilid}->[$tries] += $href;
1452: next;
1453: }
1454: while (my ($option,$value) = each(%$href)) {
1455: $Trydata{$foilid}->[$tries]->{$option}+=$value;
1456: }
1457: }
1458: }
1459: for (my $try=$mintries;$try<=$maxtries;$try++) {
1460: $Trydata{'_studentcount'}->[$try] = scalar(keys(%{$students[$try]}));
1461: }
1462: return %Trydata;
1463: }
1464:
1465: #########################################################
1466: #
1467: # Option Response: Time Analysis
1468: #
1469: #########################################################
1470: sub OR_time_analysis {
1471: my ($performance_data,$ORdata) = @_;
1472: my ($table,$Foils,$Concepts) = &build_foil_index($ORdata);
1473: my $foilkey = &build_option_index($ORdata);
1474: my $num_concepts = 1;
1475: if (defined($Concepts)) { $num_concepts = scalar(@$Concepts); }
1476: #
1477: if ($num_concepts < 2) {
1478: $table = '<h3>'.
1479: &mt('Not enough data for concept analysis.').' '.
1480: &mt('Performing Foil Analysis').
1481: '</h3>'.$table;
1482: }
1483: #
1484: my $num_plots = $env{'form.NumPlots'};
1485: my $num_data = scalar(@$performance_data)-1;
1486: #
1487: my $current_index;
1488: $table .= "<table>\n";
1489: for (my $i=0;$i<$num_plots;$i++) {
1490: ##
1491: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
1492: ('startdate_'.$i);
1493: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
1494: ('enddate_'.$i);
1495: if (! defined($starttime) || ! defined($endtime)) {
1496: my $sec_in_day = 86400;
1497: my $last_sub_time = &get_time_from_row($performance_data->[-1]);
1498: my ($sday,$smon,$syear) =
1499: (localtime($last_sub_time - $sec_in_day*$i))[3..5];
1500: $starttime = &Time::Local::timelocal(0,0,0,$sday,$smon,$syear);
1501: $endtime = $starttime + $sec_in_day;
1502: if ($i == ($num_plots -1 )) {
1503: $starttime = &get_time_from_row($performance_data->[0]);
1504: }
1505: }
1506: $table .= '<tr><td colspan="4" align="center"><font size="+1">'.
1507: &mt('Data from [_1] to [_2]',
1508: &Apache::lonlocal::locallocaltime($starttime),
1509: &Apache::lonlocal::locallocaltime($endtime)).
1510: '</font></td></tr>'.$/;
1511: my $startdateform = &Apache::lonhtmlcommon::date_setter
1512: ('Statistics','startdate_'.$i,$starttime);
1513: my $enddateform = &Apache::lonhtmlcommon::date_setter
1514: ('Statistics','enddate_'.$i,$endtime);
1515: #
1516: my $begin_index;
1517: my $end_index;
1518: my $j;
1519: while (++$j < scalar(@$performance_data)) {
1520: last if (&get_time_from_row($performance_data->[$j])
1521: > $starttime);
1522: }
1523: $begin_index = $j;
1524: while ($j < scalar(@$performance_data)) {
1525: if (&get_time_from_row($performance_data->[$j]) > $endtime) {
1526: last;
1527: } else {
1528: $j++;
1529: }
1530: }
1531: $end_index = $j;
1532: ##
1533: my ($processed_time_data,$correct,$data_count,$student_count) =
1534: &OR_time_process_data($performance_data,$begin_index,$end_index);
1535: $correct |= 0;
1536: ##
1537: $table .= '<tr><td colspan="4" align="center"><font size="+1">'.
1538: &mt('[_1] submissions from [_2] students, [_3] correct, [_4] incorrect',
1539: $data_count,$student_count,$correct,$data_count-$correct).
1540: '</font></td></tr>'.$/;
1541: my $concept_correct_plot = '';
1542: if ($num_concepts > 1) {
1543: $concept_correct_plot =
1544: &OR_Concept_Time_Analysis($processed_time_data,
1545: $correct,$data_count,$student_count,
1546: $ORdata,$Concepts);
1547: }
1548: my ($foil_correct_plot,$foil_incorrect_plot) =
1549: &OR_Foil_Time_Analysis($processed_time_data,
1550: $correct,$data_count,$student_count,
1551: $ORdata,$Foils,$Concepts);
1552: $table .= '<tr>'.
1553: '<td>'.$concept_correct_plot.'</td>'.
1554: '<td>'.$foil_correct_plot.'</td>'.
1555: '<td>'.$foil_incorrect_plot.'</td>'.
1556: '<td align="left" valign="top">'.$foilkey.'</td></tr>'.$/;
1557: $table .= '<tr><td colspan="4" align="center">'.
1558: &mt('Start time: [_1]',$startdateform).'<br />'.
1559: &mt('End time: [_1]',$enddateform).'</td></tr>'.$/;
1560: $table.= '<tr><td colspan="4"> </td></tr>'.$/;
1561: }
1562: $table .= '</table>';
1563: #
1564: return $table;
1565: }
1566:
1567: sub OR_Foil_Time_Analysis {
1568: my ($processed_time_data,$correct,$data_count,$student_count,
1569: $ORdata,$Foils,$Concepts) = @_;
1570: if ($data_count <= 0) {
1571: return ('<div class="LC_warning">'
1572: .&mt('There is no data to plot.')
1573: .'</div>'
1574: ,''
1575: );
1576: }
1577: my $analysis_html;
1578: my @plotdata;
1579: my @labels;
1580: foreach my $concept (@{$Concepts}) {
1581: foreach my $foil (@{$concept->{'foils'}}) {
1582: push(@labels,scalar(@labels)+1);
1583: my $total = $processed_time_data->{$foil}->{'_total'};
1584: if ($total == 0) {
1585: push(@{$plotdata[0]},0);
1586: } else {
1587: push(@{$plotdata[0]},
1588: 100 * $processed_time_data->{$foil}->{'_correct'} / $total);
1589: }
1590: my $total_incorrect = $total - $processed_time_data->{$foil}->{'_correct'};
1591: for (my $i=0;$i<scalar(@{$ORdata->{'_Options'}});$i++) {
1592: my $option = $ORdata->{'_Options'}->[$i];
1593: if ($total_incorrect == 0) {
1594: push(@{$plotdata[$i+1]},0);
1595: } else {
1596: push(@{$plotdata[$i+1]},
1597: 100 * $processed_time_data->{$foil}->{$option} / $total_incorrect);
1598: }
1599: }
1600: }
1601: # Put in a blank one
1602: push(@labels,'');
1603: push(@{$plotdata[0]},0);
1604: for (my $i=0;$i<scalar(@{$ORdata->{'_Options'}});$i++) {
1605: push(@{$plotdata[$i+1]},0);
1606: }
1607: }
1608: #
1609: # Create the plot
1610: my $correct_plot = &Apache::loncommon::DrawBarGraph('Correct Statements',
1611: 'Statement Number',
1612: 'Percent Correct',
1613: 100,
1614: $plotcolors,
1615: undef,
1616: $plotdata[0],
1617: {xskip=>1});
1618: for (my $j=0; $j< scalar(@{$plotdata[0]});$j++) {
1619: $plotdata[0]->[$j]=0;
1620: }
1621: my $incorrect_plot =
1622: &Apache::loncommon::DrawBarGraph('Incorrect Statements',
1623: 'Statement Number',
1624: 'Incorrect Option Choice',
1625: 100,
1626: $plotcolors,
1627: undef,
1628: @plotdata,{xskip=>1});
1629: return ($correct_plot,$incorrect_plot);
1630: }
1631:
1632: sub OR_Concept_Time_Analysis {
1633: my ($processed_time_data,$correct,$data_count,$student_count,
1634: $ORdata,$Concepts) = @_;
1635: return '' if ($data_count == 0);
1636: #
1637: # Put the data in plottable form
1638: my @plotdata;
1639: foreach my $concept (@$Concepts) {
1640: my ($total,$correct);
1641: foreach my $foil (@{$concept->{'foils'}}) {
1642: $total += $processed_time_data->{$foil}->{'_total'};
1643: $correct += $processed_time_data->{$foil}->{'_correct'};
1644: }
1645: if ($total == 0) {
1646: push(@plotdata,0);
1647: } else {
1648: push(@plotdata,100 * $correct / $total);
1649: }
1650: }
1651: #
1652: # Create the plot
1653: return &Apache::loncommon::DrawBarGraph('Correct Concepts',
1654: 'Concept Number',
1655: 'Percent Correct',
1656: 100,
1657: $plotcolors,
1658: undef,
1659: \@plotdata,{xskip=>1});
1660: }
1661:
1662: sub OR_time_process_data {
1663: my ($performance_data,$begin_index,$end_index)=@_;
1664: my %processed_time_data;
1665: my %distinct_students;
1666: my ($correct,$data_count);
1667: if (($begin_index == $end_index) &&
1668: ($end_index != scalar(@$performance_data)-1)) {
1669: return undef;
1670: }
1671: # Be sure we include the last one if we are asked for it.
1672: # That we have to correct here (and not when $end_index is
1673: # given a value) should probably be considered a bug.
1674: if ($end_index == scalar(@$performance_data)-1) {
1675: $end_index++;
1676: }
1677: my $count;
1678: for (my $i=$begin_index;$i<$end_index;$i++) {
1679: my $attempt = $performance_data->[$i];
1680: $count++;
1681: next if (! defined($attempt));
1682: my %attempt = &Process_OR_Row($attempt);
1683: $data_count++;
1684: $correct += $attempt{'_correct'};
1685: $distinct_students{$attempt->[&Apache::loncoursedata::RD_student_id()]}++;
1686: while (my ($foilid,$href) = each(%attempt)) {
1687: if (! ref($href)) {
1688: $processed_time_data{$foilid} += $href;
1689: next;
1690: }
1691: while (my ($option,$value) = each(%$href)) {
1692: $processed_time_data{$foilid}->{$option}+=$value;
1693: }
1694: }
1695: }
1696: return (\%processed_time_data,$correct,$data_count,
1697: scalar(keys(%distinct_students)));
1698: }
1699:
1700: sub build_foil_index {
1701: my ($ORdata) = @_;
1702: return if (! exists($ORdata->{'_Foils'}));
1703: my %Foildata = %{$ORdata->{'_Foils'}};
1704: my @Foils = sort(keys(%Foildata));
1705: my %Concepts;
1706: foreach my $foilid (@Foils) {
1707: push(@{$Concepts{$Foildata{$foilid}->{'_Concept'}}},
1708: $foilid);
1709: }
1710: undef(@Foils);
1711: # Having gathered the concept information in a hash, we now translate it
1712: # into an array because we need to be consistent about order.
1713: # Also put the foils in order, too.
1714: my $sortfunction = sub {
1715: my %Numbers = (one => 1,
1716: two => 2,
1717: three => 3,
1718: four => 4,
1719: five => 5,
1720: six => 6,
1721: seven => 7,
1722: eight => 8,
1723: nine => 9,
1724: ten => 10,);
1725: my $a1 = lc($a);
1726: my $b1 = lc($b);
1727: if (exists($Numbers{$a1})) {
1728: $a1 = $Numbers{$a1};
1729: }
1730: if (exists($Numbers{$b1})) {
1731: $b1 = $Numbers{$b1};
1732: }
1733: if (($a1 =~/^\d+$/) && ($b1 =~/^\d+$/)) {
1734: return $a1 <=> $b1;
1735: } else {
1736: return $a1 cmp $b1;
1737: }
1738: };
1739: my @Concepts;
1740: foreach my $concept (sort $sortfunction (keys(%Concepts))) {
1741: if (! defined($Concepts{$concept})) {
1742: $Concepts{$concept}=[];
1743: # next;
1744: }
1745: push(@Concepts,{ name => $concept,
1746: foils => [@{$Concepts{$concept}}]});
1747: push(@Foils,(@{$Concepts{$concept}}));
1748: }
1749: #
1750: # Build up the table of row labels.
1751: my $table = &Apache::loncommon::start_data_table();
1752: if (@Concepts > 1) {
1753: $table .= &Apache::loncommon::start_data_table_header_row().
1754: '<th>'.&mt('Concept Number').'</th>'.
1755: '<th>'.&mt('Concept').'</th>'.
1756: '<th>'.&mt('Foil Number').'</th>'.
1757: '<th>'.&mt('Foil Name').'</th>'.
1758: '<th>'.&mt('Foil Text').'</th>'.
1759: '<th>'.&mt('Correct Value').'</th>'.
1760: &Apache::loncommon::end_data_table_header_row();
1761: } else {
1762: $table .= &Apache::loncommon::start_data_table_header_row().
1763: '<th>'.&mt('Foil Number').'</th>'.
1764: '<th>'.&mt('Foil Name').'</th>'.
1765: '<th>'.&mt('Foil Text').'</th>'.
1766: '<th>'.&mt('Correct Value').'</th>'.
1767: &Apache::loncommon::end_data_table_header_row();
1768: }
1769: my $conceptindex = 1;
1770: my $foilindex = 1;
1771: foreach my $concept (@Concepts) {
1772: my @FoilsInConcept = @{$concept->{'foils'}};
1773: my $firstfoil = shift(@FoilsInConcept);
1774: if (@Concepts > 1) {
1775: $table .= &Apache::loncommon::start_data_table_row().
1776: '<td>'.$conceptindex.'</td>'.
1777: '<td>'.&HTML::Entities::encode($concept->{'name'},'<>&"').'</td>'.
1778: '<td>'.$foilindex++.'</td>'.
1779: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'name'},'<>&"').'</td>'.
1780: '<td>'.$Foildata{$firstfoil}->{'text'}.'</td>'.
1781: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'value'},'<>&"').'</td>'.
1782: &Apache::loncommon::end_data_table_row();
1783: } else {
1784: $table .= &Apache::loncommon::start_data_table_row().
1785: '<td>'.$foilindex++.'</td>'.
1786: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'name'},'<>&"').'</td>'.
1787: '<td>'.$Foildata{$firstfoil}->{'text'}.'</td>'.
1788: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'value'},'<>&"').'</td>'.
1789: &Apache::loncommon::end_data_table_row();
1790: }
1791: foreach my $foilid (@FoilsInConcept) {
1792: if (@Concepts > 1) {
1793: $table .= &Apache::loncommon::start_data_table_row().
1794: '<td></td>'.
1795: '<td></td>'.
1796: '<td>'.$foilindex.'</td>'.
1797: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'name'},'<>&"').'</td>'.
1798: '<td>'.$Foildata{$foilid}->{'text'}.'</td>'.
1799: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'value'},'<>&"').'</td>'.
1800: &Apache::loncommon::end_data_table_row();
1801: } else {
1802: $table .= &Apache::loncommon::start_data_table_row().
1803: '<td>'.$foilindex.'</td>'.
1804: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'name'},'<>&"').'</td>'.
1805: '<td>'.$Foildata{$foilid}->{'text'}.'</td>'.
1806: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'value'},'<>&"').'</td>'.
1807: &Apache::loncommon::end_data_table_row();
1808: }
1809: } continue {
1810: $foilindex++;
1811: }
1812: } continue {
1813: $conceptindex++;
1814: }
1815: $table .= &Apache::loncommon::end_data_table();
1816: #
1817: # Build option index with color stuff
1818: return ($table,\@Foils,\@Concepts);
1819: }
1820:
1821: sub build_option_index {
1822: my ($ORdata)= @_;
1823: my $table = "<table>\n";
1824: my $optionindex = 0;
1825: my @Rows;
1826: foreach my $option (&mt('correct option chosen'),@{$ORdata->{'_Options'}}) {
1827: my $color = $plotcolors->[$optionindex++];
1828: push (@Rows,
1829: '<tr>'.
1830: '<td bgcolor="'.$color.'">'.
1831: '<font color="'.$color.'">'.('*'x3).'</font>'.'</td>'.
1832: '<td>'.&HTML::Entities::encode($option,'<>&"').'</td>'.
1833: "</tr>\n");
1834: }
1835: shift(@Rows); # Throw away 'correct option chosen' color
1836: $table .= join('',reverse(@Rows));
1837: $table .= "</table>\n";
1838: }
1839:
1840: sub build_foil_key {
1841: my ($foils,$extra_data)= @_;
1842: if (! defined($extra_data)) { $extra_data = {}; }
1843: my $table = "<table>\n";
1844: my $foil_index = 0;
1845: my @rows;
1846: foreach my $foil (&mt('correct foil chosen'),@{$foils}) {
1847: my $color = $plotcolors->[$foil_index++];
1848: push (@rows,
1849: '<tr>'.
1850: '<td bgcolor="'.$color.'" class="key">'.
1851: '<font color="'.$color.'">'.('*'x4).'</font></td>'.
1852: '<td>'.&HTML::Entities::encode($foil,'<>&"').
1853: (' 'x2).$extra_data->{$foil}.'</td>'.
1854: "</tr>\n");
1855: }
1856: shift(@rows); # Throw away 'correct foil chosen' color
1857: $table .= join('',reverse(@rows));
1858: $table .= "</table>\n";
1859: }
1860:
1861: #########################################################
1862: #########################################################
1863: ##
1864: ## Generic Interface Routines
1865: ##
1866: #########################################################
1867: #########################################################
1868: sub CreateInterface {
1869: ##
1870: ## Environment variable initialization
1871: if (! exists($env{'form.AnalyzeOver'})) {
1872: $env{'form.AnalyzeOver'} = 'tries';
1873: }
1874: ##
1875: ## Build the menu
1876: my $Str = '';
1877: $Str .= '<p>';
1878: $Str .= &Apache::loncommon::start_data_table();
1879: $Str .= &Apache::loncommon::start_data_table_header_row();
1880: $Str .= '<th>'.&mt('Sections').'</th>';
1881: $Str .= '<th>'.&mt('Groups').'</th>';
1882: $Str .= '<th>'.&mt('Access Status').'</th>';
1883: $Str .= '<th>'.&mt('Options').'</th>';
1884: $Str .= &Apache::loncommon::end_data_table_header_row();
1885: ##
1886: ##
1887: $Str .= &Apache::loncommon::start_data_table_row();
1888: $Str .= '<td align="center">'."\n";
1889: $Str .= &Apache::lonstatistics::SectionSelect('Section','multiple',5);
1890: $Str .= '</td>';
1891: #
1892: $Str .= '<td align="center">'."\n";
1893: $Str .= &Apache::lonstatistics::GroupSelect('Group','multiple',5);
1894: $Str .= '</td>';
1895: #
1896: $Str .= '<td align="center">';
1897: $Str .= &Apache::lonhtmlcommon::StatusOptions(undef,undef,5);
1898: $Str .= '</td>';
1899: #
1900: ##
1901: ##
1902: $Str .= '<td valign="top">';
1903: ##
1904: my $showprob_checkbox =
1905: '<input type="checkbox" name="show_prob" value="true"';
1906: if ($env{'form.show_prob'} eq 'true') {
1907: $showprob_checkbox .= ' checked="checked"';
1908: }
1909: $showprob_checkbox.= ' />';
1910: $Str.= '<span class="LC_nobreak"><label>'.
1911: $showprob_checkbox.' '.&mt('Show problem').
1912: '</label></span><br />';
1913: ##
1914: my $analyze_selector = '<select name="AnalyzeOver" >';
1915: $analyze_selector .= '<option value="tries" ';
1916: if (! exists($env{'form.AnalyzeOver'}) ||
1917: $env{'form.AnalyzeOver'} eq 'tries'){
1918: # Default to tries
1919: $analyze_selector .= ' selected="selected" ';
1920: }
1921: $analyze_selector .= '>'.&mt('Tries').'</option>';
1922: $analyze_selector .= '<option value="time" ';
1923: $analyze_selector .= ' selected ' if ($env{'form.AnalyzeOver'} eq 'time');
1924: $analyze_selector .= '>'.&mt('Time').'</option>';
1925: $analyze_selector .= '</select>';
1926: $Str .= '<span class="LC_nobreak"><label>'.
1927: &mt('Analyze Over [_1] [_2]',
1928: $analyze_selector,
1929: &Apache::loncommon::help_open_topic('Analysis_Analyze_Over')).
1930: '</label></span><br />'.$/;
1931: ##
1932: my $numplots_selector = '<select name="NumPlots">';
1933: if (! exists($env{'form.NumPlots'})
1934: || $env{'form.NumPlots'} < 1
1935: || $env{'form.NumPlots'} > 20) {
1936: $env{'form.NumPlots'} = 5;
1937: }
1938: foreach my $i (1,2,3,4,5,6,7,8,10,15,20) {
1939: $numplots_selector .= '<option value="'.$i.'" ';
1940: if ($env{'form.NumPlots'} == $i) { $numplots_selector.=' selected="selected" '; }
1941: $numplots_selector .= '>'.$i.'</option>';
1942: }
1943: $numplots_selector .= '</select>';
1944: $Str .= '<span class="LC_nobreak"><label>'.&mt('Number of Plots [_1]',$numplots_selector).
1945: '</label></span><br />';
1946: ##
1947: $Str .= '</td>';
1948: ##
1949: ##
1950: $Str .= &Apache::loncommon::end_data_table_row();
1951: $Str .= &Apache::loncommon::end_data_table();
1952: $Str .= '<p class="LC_nobreak"><label>'
1953: .&mt('Status: [_1]',
1954: '<input type="text" name="stats_status"'
1955: .' size="60" value="" readonly="readonly" />')
1956: .'</label></p>';
1957: $Str .= '</p>';
1958: return $Str;
1959: }
1960:
1961: #########################################################
1962: #########################################################
1963: ##
1964: ## Misc Option Response functions
1965: ##
1966: #########################################################
1967: #########################################################
1968: sub get_time_from_row {
1969: my ($row) = @_;
1970: if (ref($row)) {
1971: return $row->[&Apache::loncoursedata::RD_timestamp()];
1972: }
1973: return undef;
1974: }
1975:
1976: sub get_tries_from_row {
1977: my ($row) = @_;
1978: if (ref($row)) {
1979: return $row->[&Apache::loncoursedata::RD_tries()];
1980: }
1981: return undef;
1982: }
1983:
1984: sub hashify_attempt {
1985: my ($row) = @_;
1986: my %attempt;
1987: $attempt{'student'} = $row->[&Apache::loncoursedata::RD_sname()];
1988: $attempt{'tries'} = $row->[&Apache::loncoursedata::RD_tries()];
1989: $attempt{'submission'} = &unescape($row->[&Apache::loncoursedata::RD_submission()]);
1990: $attempt{'award'} = $row->[&Apache::loncoursedata::RD_awarddetail()];
1991: $attempt{'timestamp'} = $row->[&Apache::loncoursedata::RD_timestamp()];
1992: return %attempt;
1993: }
1994:
1995: sub Process_OR_Row {
1996: my ($row) = @_;
1997: my %RowData;
1998: # my $student_id = $row->[&Apache::loncoursedata::RD_student_id()];
1999: my $award = $row->[&Apache::loncoursedata::RD_awarddetail()];
2000: my $grading = $row->[&Apache::loncoursedata::RD_response_eval()];
2001: my $submission = $row->[&Apache::loncoursedata::RD_submission()];
2002: my $time = $row->[&Apache::loncoursedata::RD_timestamp()];
2003: # my $tries = $row->[&Apache::loncoursedata::RD_tries()];
2004: return undef if ($award eq 'MISSING_ANSWER');
2005: if (&submission_is_correct($award)) {
2006: $RowData{'_correct'} = 1;
2007: }
2008: $RowData{'_total'} = 1;
2009: my @Foilgrades = split('&',$grading);
2010: my @Foilsubs = split('&',$submission);
2011: for (my $j=0;$j<=$#Foilgrades;$j++) {
2012: my ($foilid,$correct) = split('=',$Foilgrades[$j]);
2013: $foilid = &unescape($foilid);
2014: my (undef,$submission) = split('=',$Foilsubs[$j]);
2015: if ($correct) {
2016: $RowData{$foilid}->{'_correct'}++;
2017: } else {
2018: $submission = &unescape($submission);
2019: $RowData{$foilid}->{$submission}++;
2020: }
2021: $RowData{$foilid}->{'_total'}++;
2022: }
2023: return %RowData;
2024: }
2025:
2026: sub submission_is_correct {
2027: my ($award) = @_;
2028: if ($award =~ /(APPROX_ANS|EXACT_ANS)/) {
2029: return 1;
2030: } else {
2031: return 0;
2032: }
2033: }
2034:
2035: 1;
2036:
2037: __END__
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