1: # The LearningOnline Network with CAPA
2: #
3: # $Id: lonproblemanalysis.pm,v 1.141 2011/12/21 21:25:51 www 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::lonquickgrades();
35: use Apache::lonstatistics;
36: use Apache::lonlocal;
37: use Apache::lonstathelpers();
38: use Apache::lonstudentsubmissions();
39: use HTML::Entities();
40: use Time::Local();
41: use capa;
42: use lib '/home/httpd/lib/perl/';
43: use LONCAPA;
44:
45:
46: my $plotcolors = ['#33ff00',
47: '#0033cc', '#990000', '#aaaa66', '#663399', '#ff9933',
48: '#66ccff', '#ff9999', '#cccc33', '#660000', '#33cc66',
49: ];
50:
51: my @SubmitButtons = ({ name => 'PrevProblemAnalysis',
52: text => 'Previous Problem' },
53: { name => 'ProblemAnalysis',
54: text => 'Analyze Problem Again' },
55: { name => 'NextProblemAnalysis',
56: text => 'Next Problem' },
57: { name => 'break'},
58: { name => 'SelectAnother',
59: text => 'Choose a different Problem' });
60:
61: sub BuildProblemAnalysisPage {
62: my ($r,$c)=@_;
63: #
64: my %Saveable_Parameters = ('Status' => 'scalar',
65: 'Section' => 'array',
66: 'Groups' => 'array',
67: 'NumPlots' => 'scalar',
68: 'AnalyzeOver' => 'scalar',
69: );
70: &Apache::loncommon::store_course_settings('problem_analysis',
71: \%Saveable_Parameters);
72: &Apache::loncommon::restore_course_settings('problem_analysis',
73: \%Saveable_Parameters);
74: #
75: &Apache::lonstatistics::PrepareClasslist();
76: #
77: $r->print(&Apache::lonhtmlcommon::breadcrumbs('Detailed Problem Analysis'));
78: &Apache::lonquickgrades::startGradeScreen($r,'statistics');
79:
80: $r->print(&CreateInterface());
81: #
82: my @Students = @Apache::lonstatistics::Students;
83: #
84: if (@Students < 1 && exists($env{'form.firstrun'})) {
85: $r->print('<div class="LC_warning">'
86: .&mt('There are no students in the sections/groups selected.')
87: .'</div>'
88: );
89: }
90: #
91: my @CacheButtonHTML =
92: &Apache::lonstathelpers::manage_caches($r,'Statistics','stats_status');
93: $r->rflush();
94: #
95: my $problem_types = '(option|radiobutton|numerical)';
96: if (exists($env{'form.problemchoice'}) &&
97: ! exists($env{'form.SelectAnother'})) {
98: foreach my $button (@SubmitButtons) {
99: if ($button->{'name'} eq 'break') {
100: $r->print("<br />\n");
101: } else {
102: $r->print('<input type="submit" name="'.$button->{'name'}.'" '.
103: 'value="'.&mt($button->{'text'}).'" />');
104: $r->print(' 'x5);
105: }
106: }
107: foreach my $html (@CacheButtonHTML) {
108: $r->print($html.(' 'x5));
109: }
110: #
111:
112: # This is commented out pending actual implementation of
113: # CSV and Excel output.
114: #$r->print(&Apache::lonstathelpers::submission_report_form
115: # ('problem_analysis'));
116: #
117: $r->print('<hr />');
118: $r->rflush();
119: #
120: # Determine which problem we are to analyze
121: my $current_problem = &Apache::lonstathelpers::get_target_from_id
122: ($env{'form.problemchoice'});
123: #
124: my ($navmap,$prev,$curr,$next) =
125: &Apache::lonstathelpers::get_prev_curr_next($current_problem,
126: $problem_types,
127: 'response',
128: );
129: if (exists($env{'form.PrevProblemAnalysis'}) && defined($prev)) {
130: $current_problem = $prev;
131: } elsif (exists($env{'form.NextProblemAnalysis'}) && defined($next)) {
132: $current_problem = $next;
133: } else {
134: $current_problem = $curr;
135: }
136: #
137: # Store the current problem choice and send it out in the form
138: $env{'form.problemchoice'} =
139: &Apache::lonstathelpers::make_target_id($current_problem);
140: $r->print('<input type="hidden" name="problemchoice" value="'.
141: $env{'form.problemchoice'}.'" />');
142: #
143: if (! defined($current_problem->{'resource'})) {
144: $r->print('resource is undefined');
145: } else {
146: my $resource = $current_problem->{'resource'};
147: $r->print('<h1>'.$resource->compTitle.'</h1>');
148: $r->print('<h3>'.$resource->src.'</h3>');
149: $r->print('<h4>'.&Apache::lonstatistics::section_and_enrollment_description().'</h4>');
150: if ($env{'form.show_prob'} eq 'true') {
151: $r->print('<hr />'
152: .&Apache::lonstathelpers::render_resource($resource)
153: .'<hr />'
154: );
155: }
156: $r->rflush();
157: if (@Students) {
158: my %Data = &Apache::lonstathelpers::get_problem_data
159: ($resource->src);
160: my $problem_data = $Data{$current_problem->{'part'}.
161: '.'.
162: $current_problem->{'respid'}};
163: if ($current_problem->{'resptype'} eq 'option') {
164: &OptionResponseAnalysis($r,$current_problem,
165: $problem_data,
166: \@Students);
167: } elsif ($current_problem->{'resptype'} eq 'radiobutton') {
168: &radio_response_analysis($r,$current_problem,
169: $problem_data,
170: \@Students);
171: } elsif ($current_problem->{'resptype'} eq 'numerical') {
172: &numerical_response_analysis($r,$current_problem,
173: $problem_data,\@Students);
174: } else {
175: $r->print('<div class="LC_warning">'
176: .&mt('Analysis of [_1] is not supported.'
177: ,$current_problem->{'resptype'})
178: .'</div>'
179: );
180: }
181: }
182: }
183: $r->print('<hr />');
184: } else {
185: my $submit_button = '<input type="submit" '.
186: 'name="ProblemAnalysis" value="'.
187: &mt('Analyze Problem').'" />';
188: $r->print($submit_button);
189: $r->print(' 'x5);
190: $r->print('<h3>'.&mt('Please select a problem to analyze').'</h3>');
191: $r->print(&Apache::lonstathelpers::problem_selector($problem_types,
192: $submit_button));
193: }
194: }
195:
196: #########################################################
197: #########################################################
198: ##
199: ## Numerical Response Routines
200: ##
201: #########################################################
202: #########################################################
203: sub numerical_response_analysis {
204: my ($r,$problem,$problem_analysis,$students) = @_;
205: my $c = $r->connection();
206: #
207: if ($env{'form.AnalyzeOver'} !~ /^(tries|time)$/) {
208: $r->print('Bad request');
209: }
210: #
211: my ($resource,$partid,$respid) = ($problem->{'resource'},
212: $problem->{'part'},
213: $problem->{'respid'});
214: # Gather student data
215: my $response_data = &Apache::loncoursedata::get_response_data
216: ([&Apache::lonstatistics::get_selected_sections()],
217: [&Apache::lonstatistics::get_selected_groups()],
218: $Apache::lonstatistics::enrollment_status,
219: $resource->symb,$respid);
220: #
221: $problem_analysis->{'answercomputed'} = 1;
222: if ($problem_analysis->{'answercomputed'}) {
223: my $answers =
224: &Apache::lonstathelpers::GetStudentAnswers($r,$problem,$students,
225: 'Statistics',
226: 'stats_status');
227: $r->print(&numerical_one_dimensional_plot($r,600,150,$answers));
228: }
229: #
230: if (ref($response_data) ne 'ARRAY') {
231: $r->print('<div class="LC_warning">'
232: .&mt('There is no submission data for this resource.')
233: .'</div>'
234: );
235: return;
236: }
237: my $analysis_html = '<table>';
238: for (my $plot_num = 1;$plot_num<=$env{'form.NumPlots'};$plot_num++) {
239: my $restriction_function;
240: my $header_message;
241: my $stats_message;
242: my $post_message; # passed through &mt sooner rather than later
243: my $no_data_message;
244: my @extra_data;
245: if ($env{'form.AnalyzeOver'} eq 'tries') {
246: $restriction_function = sub {($_[0]->{'tries'} == $plot_num?1:0)};
247: $header_message = 'Attempt [_1]';
248: $stats_message =
249: '[_1] submissions, [_2] correct, [_3] incorrect';
250: $post_message = '';
251: $no_data_message = 'No data exists for attempt [_1].';
252: } else {
253: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
254: ('startdate_'.$plot_num);
255: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
256: ('enddate_'.$plot_num);
257: ($starttime,$endtime) = &ensure_start_end_times
258: ($starttime,$endtime,
259: &get_time_from_row($response_data->[0]),
260: &get_time_from_row($response_data->[-1]),
261: $plot_num);
262: $header_message = 'Data from [_2] to [_3]';
263: $extra_data[0] = &Apache::lonlocal::locallocaltime($starttime);
264: $extra_data[1] = &Apache::lonlocal::locallocaltime($endtime);
265: #
266: $stats_message =
267: '[_1] submissions from [_4] students, [_2] correct, [_3] incorrect';
268: #
269: $post_message =
270: &mt('Start time: [_1]',
271: &Apache::lonhtmlcommon::date_setter
272: ('Statistics','startdate_'.$plot_num,$starttime)).
273: '<br />'.
274: &mt('End time: [_1]',
275: &Apache::lonhtmlcommon::date_setter
276: ('Statistics','enddate_'.$plot_num,$endtime));
277: $restriction_function =
278: sub {
279: my $t = $_[0]->{'timestamp'};
280: if ($t >= $starttime && $t < $endtime) {
281: return 1;
282: } else {
283: return 0;
284: }
285: };
286: $no_data_message = 'No data for [_2] to [_3]';
287: }
288: #
289: my ($correct,$answers) =
290: &numerical_determine_answers($r,$resource,$partid,
291: $respid,$students);
292: if ($c->aborted()) { return; };
293: #
294: my ($responses,$stats) =
295: &numerical_classify_responses($response_data,$correct,
296: $restriction_function);
297: if ($stats->{'submission_count'} == 0) {
298: $analysis_html.=
299: '<tr><td colspan="2"><div class="LC_warning">'.
300: &mt($no_data_message,$plot_num,@extra_data).
301: '</div></td></tr>';
302: } else {
303: $analysis_html.=
304: '<tr><td colspan="2" align="center"><font size="+1"><b>'.
305: &mt($header_message,$plot_num,@extra_data).
306: '</b></font></td></tr>'.
307: '<tr><td colspan="2" align="center">'.
308: &mt($stats_message,
309: $stats->{'submission_count'},
310: $stats->{'correct_count'},
311: $stats->{'incorrect_count'},
312: $stats->{'students'},
313: @extra_data).
314: '</td></tr>'.
315: '<tr>'.'<td valign="top" align="center">'.
316: &numerical_plot_percent($r,$responses,$stats).'</td>'.
317: '<td align="center" valign="top">'.
318: &numerical_plot_differences($r,$responses,$stats).'</td>'.
319: '</tr>';
320: }
321: if ($post_message ne '') {
322: $analysis_html .=
323: '<tr><td colspan="2">'.$post_message.'</td></tr>';
324: }
325: }
326: $analysis_html.='</table>';
327: $r->print($analysis_html);
328: #
329: return;
330: }
331:
332: sub numerical_plot_percent {
333: my ($r,$responses,$stats) = @_;
334: #
335: my $total = $stats->{'submission_count'};
336: return '' if ($total == 0);
337: my $max_bins = 50;
338: my $lowest_percent = $stats->{'min_percent'};
339: my $highest_percent = $stats->{'max_percent'};
340: my $percent_spread = $highest_percent - $lowest_percent;
341: foreach (qw/20 30 40 50 100 200/) {
342: if ($percent_spread < $_) {
343: $highest_percent =$_/2;
344: last;
345: }
346: }
347: $percent_spread = $highest_percent - $lowest_percent;
348: my $bin_size = 1;
349: foreach (qw/0.01 0.05 0.1 0.5 1 2 5 10 20 25 50 100/) {
350: if ($lowest_percent/2 < $_){
351: $bin_size = $_;
352: if ( ($percent_spread/$bin_size) < $max_bins ) {
353: last;
354: }
355: }
356: }
357: my @bins;
358: for (my $bin = -$highest_percent;$bin<0;$bin+=$bin_size) {
359: push (@bins,$bin);
360: }
361: for (my $bin = 0; $bin<$highest_percent;$bin+=$bin_size) {
362: push (@bins,$bin);
363: }
364: push(@bins,$highest_percent);
365: #
366: my @correct;
367: my @incorrect;
368: my @count;
369: while (my ($ans,$submissions) = each(%$responses)) {
370: while (my ($submission,$counts) = each(%$submissions)) {
371: my ($correct_count,$incorrect_count) = @$counts;
372: my $scaled_value =
373: ($ans) ? 100*($submission-$ans)/abs($ans)
374: : 0;
375: if ($scaled_value < $bins[0]) {
376: $bins[0]=$scaled_value -1;
377: }
378: my $bin;
379: for ($bin=0;$bin<$#bins;$bin++) {
380: last if ($bins[$bin]>$scaled_value);
381: }
382: $correct[$bin-1]+=$correct_count;
383: $incorrect[$bin-1]+=$incorrect_count;
384: $count[$bin-1]+=$correct_count+$incorrect_count;
385: }
386: }
387: #
388: my @plot_correct = @correct;
389: my @plot_incorrect = @incorrect;
390: my $max;
391: for (my $i=0;$i<$#bins;$i++) {
392: $plot_correct[$i] *= 100/$total;
393: $plot_incorrect[$i] *= 100/$total;
394: if (! defined($max) ||
395: $max < $plot_correct[$i]+$plot_incorrect[$i] ) {
396: $max = $plot_correct[$i]+$plot_incorrect[$i];
397: }
398: }
399: foreach (qw/1 5 10 15 20 25 30 40 50 75 100/) {
400: if ($max <$_) { $max = $_; last; }
401: }
402: #
403: my $title = &mt('Percent Difference');
404: my @labels = (1..scalar(@bins)-1);
405: my $graph = &Apache::loncommon::DrawBarGraph
406: ($title,'Percent Difference from Correct','Percent of Answers',
407: $max,['#33FF00','#FF3300'],\@labels,\@plot_correct,\@plot_incorrect,
408: {xskip=>1});
409: #
410: my $table = $graph.$/.
411: &numerical_bin_table(\@bins,\@labels,\@incorrect,\@correct,\@count).$/;
412: return $table;
413: }
414:
415: sub numerical_plot_differences {
416: my ($r,$responses,$stats) = @_;
417: #
418: my $total = $stats->{'submission_count'};
419: return '' if ($total == 0);
420: my $max_bins = 21;
421: my $min_bin_size = $stats->{'min_abs'};
422: my $low_bin = $stats->{'lowest_ans'}-$stats->{'max_bin_size'};
423: my $high_bin = $stats->{'highest_ans'}+$stats->{'max_bin_size'};
424: if ($high_bin > 0 && $low_bin > -$high_bin) {
425: $low_bin = -$high_bin;
426: } elsif ($low_bin < 0 && $high_bin < -$low_bin) {
427: $high_bin = -$low_bin;
428: }
429: if ($high_bin == $low_bin) {
430: $high_bin+=1;
431: $low_bin-=1;
432: }
433: if (!$min_bin_size ||
434: ($high_bin -$low_bin)/$min_bin_size * 2 > $max_bins) {
435: $min_bin_size = abs($high_bin - $low_bin) / $max_bins * 2;
436: }
437: my @bins;
438: for (my $num = $low_bin;$num <= $high_bin;$num+=($min_bin_size/2)) {
439: push(@bins,$num);
440: }
441: #
442: my @correct;
443: my @incorrect;
444: my @count;
445: while (my ($ans,$submissions) = each(%$responses)) {
446: while (my ($submission,$counts) = each(%$submissions)) {
447: my ($correct_count,$incorrect_count) = @$counts;
448: my $scaled_value = $submission-$ans;
449: if ($scaled_value < $bins[0]) {
450: $bins[0]=$scaled_value-1;
451: }
452: my $bin=0;
453: for ($bin=0;$bin<$#bins;$bin++) {
454: last if ($bins[$bin]>$scaled_value);
455: }
456: $correct[$bin-1]+=$correct_count;
457: $incorrect[$bin-1]+=$incorrect_count;
458: $count[$bin-1]+=$correct_count+$incorrect_count;
459: }
460: }
461: my @plot_correct = @correct;
462: my @plot_incorrect = @incorrect;
463: my $max;
464: for (my $i=0;$i<=$#bins;$i++) {
465: $plot_correct[$i] *= 100/$total;
466: $plot_incorrect[$i] *= 100/$total;
467: if (! defined($max) ||
468: $max < $plot_correct[$i]+$plot_incorrect[$i] ) {
469: $max = $plot_correct[$i]+$plot_incorrect[$i];
470: }
471: }
472: foreach (qw/1 5 10 15 20 25 30 40 50 75 100/) {
473: if ($max <$_) { $max = $_; last; }
474: }
475: #
476: my $title = &mt('Difference between submission and correct');
477: my @labels = (1..scalar(@bins)-1);
478: my $graph = &Apache::loncommon::DrawBarGraph
479: ($title,'Difference from Correct','Percent of Answers',
480: $max,['#33FF00','#FF3300'],\@labels,\@plot_correct,\@plot_incorrect,
481: {xskip=>1});
482: #
483: my $table = $graph.$/.
484: &numerical_bin_table(\@bins,\@labels,\@incorrect,\@correct,\@count).$/;
485: return $table;
486: }
487:
488: sub numerical_classify_responses {
489: my ($full_row_data,$correct,$function) = @_;
490: my %submission_data;
491: my %students;
492: my %stats;
493: my $max=0;
494: foreach my $row (@$full_row_data) {
495: my %subm = &hashify_attempt($row);
496: if (ref($correct) eq 'HASH') {
497: my $s_correct = $correct->{$subm{'student'}};
498: $subm{'correct'} = $s_correct->{'answer'};
499: foreach my $item ('unit','ans_low','ans_high') {
500: $subm{$item} = $s_correct->{$item};
501: }
502: } else { # This probably never happens....
503: $subm{'correct'} = $correct->{'answer'};
504: $subm{'unit'} = $correct->{'unit'};
505: }
506: #
507: my $abs_low =abs($subm{'correct'}-$subm{'ans_low'});
508: my $abs_high=abs($subm{'correct'}-$subm{'ans_high'});
509: if (! defined($stats{'min_abs'}) ||
510: $stats{'min_abs'} > $abs_low) {
511: $stats{'min_abs'} = $abs_low;
512: }
513: if ($stats{'min_abs'} > $abs_high) {
514: $stats{'min_abs'} = $abs_high;
515: }
516: if (! defined($stats{'max_abs'}) ||
517: $stats{'max_abs'} < $abs_low) {
518: $stats{'max_abs'} = $abs_low;
519: }
520: if ($stats{'max_abs'} < $abs_high) {
521: $stats{'max_abs'} = $abs_high;
522: }
523: my $low_percent;
524: my $high_percent;
525: if (defined($subm{'correct'}) && $subm{'correct'} != 0) {
526: $low_percent = 100 * abs($abs_low / $subm{'correct'});
527: $high_percent = 100 * abs($abs_high / $subm{'correct'});
528: }
529: if (! defined($stats{'min_percent'}) ||
530: $stats{'min_percent'} > $low_percent) {
531: $stats{'min_percent'} = $low_percent;
532: }
533: if ($stats{'min_percent'} > $high_percent) {
534: $stats{'min_percent'} = $high_percent;
535: }
536: if (! defined($stats{'max_percent'}) ||
537: $stats{'max_percent'} < $low_percent) {
538: $stats{'max_percent'} = $low_percent;
539: }
540: if ($stats{'max_percent'} < $high_percent) {
541: $stats{'max_percent'} = $high_percent;
542: }
543: if (! defined($stats{'lowest_ans'}) ||
544: $stats{'lowest_ans'} > $subm{'correct'}) {
545: $stats{'lowest_ans'} = $subm{'correct'};
546: }
547: if (! defined($stats{'highest_ans'}) ||
548: $stats{'highest_ans'} < $subm{'correct'}) {
549: $stats{'highest_ans'} = $subm{'correct'};
550: }
551: #
552: $subm{'submission'} =~ s/=\d+\s*$//;
553: if (&$function(\%subm)) {
554: my $scaled = '1';
555: my ($sname,$sdom) = split(':',$subm{'student'});
556: my ($myunit,$mysub) = ($subm{'unit'},$subm{'submission'});
557: my $result =
558: &capa::caparesponse_get_real_response($myunit,
559: $mysub,
560: \$scaled);
561: # &Apache::lonnet::logthis('scaled = '.$scaled.' result ='.$result);
562: next if (! defined($scaled));
563: # next if ($result ne '6');
564: my $submission = $scaled;
565: $students{$subm{'student'}}++;
566: $stats{'submission_count'}++;
567: if (&numerical_submission_is_correct($subm{'award'})) {
568: $stats{'correct_count'}++;
569: $submission_data{$subm{'correct'}}->{$submission}->[0]++;
570: } elsif (&numerical_submission_is_incorrect($subm{'award'})) {
571: $stats{'incorrect_count'}++;
572: $submission_data{$subm{'correct'}}->{$submission}->[1]++;
573: }
574: }
575: }
576: $stats{'correct_count'} |= 0;
577: $stats{'incorrect_count'} |= 0;
578: $stats{'students'}=scalar(keys(%students));
579: return (\%submission_data,\%stats);
580: }
581:
582: sub numerical_submission_is_correct {
583: my ($award) = @_;
584: if ($award =~ /^(APPROX_ANS|EXACT_ANS)$/) {
585: return 1;
586: } else {
587: return 0;
588: }
589: }
590:
591: sub numerical_submission_is_incorrect {
592: my ($award) = @_;
593: if ($award =~ /^(INCORRECT)$/) {
594: return 1;
595: } else {
596: return 0;
597: }
598: }
599:
600: sub numerical_bin_table {
601: my ($bins,$labels,$incorrect,$correct,$count)=@_;
602: my $table =
603: '<table><tr><th>'.&mt('Bar').'</th>'.
604: '<th colspan="3">'.&mt('Range').'</th>'.
605: '<th>'.&mt('Incorrect').'</th>'.
606: '<th>'.&mt('Correct').'</th>'.
607: '<th>'.&mt('Count').'</th>'.
608: '</tr>'.$/;
609: for (my $i=0;$i<scalar(@{$bins}-1);$i++) {
610: my $lownum = $bins->[$i];
611: if ($i == 0) { $lownum = '-∞'; }
612: my $highnum = $bins->[$i+1];
613: if ($i == scalar(@{$bins})-2) { $highnum = '∞'; }
614: $table .=
615: '<tr>'.
616: '<td>'.$labels->[$i].'</td>'.
617: '<td align="right">'.$lownum.'</td>'.
618: '<td> - </td>'.
619: '<td align="right">'.$highnum.'</td>'.
620: '<td align="right">'.$incorrect->[$i].'</td>'.
621: '<td align="right">'.$correct->[$i].'</td>'.
622: '<td align="right">'.$count->[$i].'</td>'.
623: '</tr>'.$/;
624: }
625: $table.= '</table>';
626: return $table;
627: }
628:
629: sub numerical_determine_answers {
630: my ($r,$resource,$partid,$respid,$students)=@_;
631: my $c = $r->connection();
632: #
633: my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin($r,scalar(@$students));
634: #
635: # Read in the cache (if it exists) before we start timing things.
636: &Apache::lonstathelpers::ensure_proper_cache($resource->{'symb'});
637: #
638: my $correct;
639: my %answers;
640: foreach my $student (@$students) {
641: last if ($c->aborted());
642: my $sname = $student->{'username'};
643: my $sdom = $student->{'domain'};
644: # analyze problem
645: my $analysis =
646: &Apache::lonstathelpers::analyze_problem_as_student($resource,
647: $sname,
648: $sdom);
649: # make the key
650: my $key = $partid.'.'.$respid;
651: # pick one of the possible answers
652: my $which = 'INTERNAL';
653: if (!exists($analysis->{$key}{$which})) {
654: $which = (sort(keys(%{ $analysis->{$key} })))[0];
655: }
656: foreach my $item ('answer','unit','ans_high','ans_low') {
657: if (ref($analysis->{$key.'.'.$item}) eq 'ARRAY') {
658: $correct->{$sname.':'.$sdom}->{$item} =
659: $analysis->{$key.'.'.$item}[0];
660: } else {
661: $correct->{$sname.':'.$sdom}->{$item} =
662: $analysis->{$key.'.'.$item}{$which}[0][0];
663: }
664: }
665: $answers{$correct->{$sname.':'.$sdom}{'answer'}}++;
666: &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
667: 'last student');
668: }
669: &Apache::lonstathelpers::write_analysis_cache();
670: &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
671: return ($correct,\%answers);
672: }
673:
674: #
675: # Inputs: $r, $width, $height, $data
676: # $n = number of students
677: # $data = hashref of $answer => $frequency pairs
678: sub numerical_one_dimensional_plot {
679: my ($r,$width,$height,$data)=@_;
680: #
681: # Compute data -> image scaling factors
682: my $max_y = 0;
683: my $min_x = undef;
684: my $max_x = undef;
685: my $n = 0;
686: while (my ($answer,$count) = each(%$data)) {
687: $n+=$count;
688: $max_y = $count if ($max_y < $count);
689: if (! defined($min_x) || $answer < $min_x) {
690: $min_x = $answer;
691: }
692: if (! defined($max_x) || $answer > $max_x) {
693: $max_x = $answer;
694: }
695: }
696: #
697: my $min_max_difference = $max_x - $min_x;
698: if (! defined($min_max_difference) || $min_max_difference == 0) {
699: $min_max_difference = 1;
700: }
701: my $h_scale = ($width-10)/$min_max_difference;
702: #
703: my $ticscale = 5;
704: if ($max_y * $ticscale > $height/2) {
705: $ticscale = int($height/2/$max_y);
706: $ticscale = 1 if ($ticscale < 1);
707: }
708: #
709: # Create the plot
710: my $plot =
711: qq{<drawimage width="$width" height="$height" bgcolor="transparent" >};
712: while (my ($answer,$count) = each(%$data)) {
713: my $xloc = 5+$h_scale*($answer - $min_x);
714: my $top = $height/2-$count*$ticscale;
715: my $bottom = $height/2+$count*$ticscale;
716: $plot .= &line($xloc,$top,$xloc,$bottom,'888888',1);
717: }
718: #
719: # Put the scale on last to ensure it is on top of the data.
720: if ($min_x < 0 && $max_x > 0) {
721: my $circle_x = 5+$h_scale*abs($min_x); # '0' in data coordinates
722: my $r = 4;
723: $plot .= &line(5,$height/2,$circle_x-$r,$height/2,'000000',1);
724: $plot .= &circle($circle_x,$height/2,$r+1,'000000');
725: $plot .= &line($circle_x+$r,$height/2,$width-5,$height/2,'000000',1);
726: } else {
727: $plot .= &line(5,$height/2,$width-5,$height/2,'000000',1);
728: }
729: $plot .= '</drawimage>';
730: my $plotresult = &Apache::lonxml::xmlparse($r,'web',$plot);
731: my $result = '<table>'.
732: '<tr><td colspan="3" align="center">'.
733: '<font size="+2">'.&mt('Distribution of correct answers').'</font>'.
734: '<br />'.&mt('[_1] students, [_2] distinct correct answers',
735: $n,scalar(keys(%$data))).
736: '<br />'.&mt('Maximum number of coinciding values: [_1]',$max_y).
737: '</td></tr>'.
738: '<tr>'.
739: '<td valign="center">'.$min_x.'</td>'.
740: '<td>'.$plotresult.'</td>'.
741: '<td valign="center">'.$max_x.'</td>'.
742: '</tr>'.
743: '</table>';
744: return $result;
745: }
746:
747: ##
748: ## Helper subroutines for <drawimage>.
749: ## These should probably go somewhere more suitable soon.
750: sub line {
751: my ($x1,$y1,$x2,$y2,$color,$thickness) = @_;
752: return qq{<line x1="$x1" y1="$y1" x2="$x2" y2="$y2" color="$color" thickness="$thickness" />};
753: }
754:
755: sub text {
756: my ($x,$y,$color,$text,$font,$direction) = @_;
757: if (! defined($font) || $font !~ /^(tiny|small|medium|large|giant)$/) {
758: $font = 'medium';
759: }
760: if (! defined($direction) || $direction ne 'vertical') {
761: $direction = '';
762: }
763: return qq{<text x="$x" y="$y" color="$color" font="$font" direction="$direction" >$text</text>};
764: }
765:
766: sub rectangle {
767: my ($x1,$y1,$x2,$y2,$color,$thickness,$filled) = @_;
768: return qq{<rectangle x1="$x1" y1="$y1" x2="$x2" y2="$y2" color="$color" thickness="$thickness" filled="$filled" />};
769: }
770:
771: sub arc {
772: my ($x,$y,$width,$height,$start,$end,$color,$thickness,$filled)=@_;
773: return qq{<arc x="$x" y="$y" width="$width" height="$height" start="$start" end="$end" color="$color" thickness="$thickness" filled="$filled" />};
774: }
775:
776: sub circle {
777: my ($x,$y,$radius,$color,$thickness,$filled)=@_;
778: return &arc($x,$y,$radius,$radius,0,360,$color,$thickness,$filled);
779: }
780:
781: #########################################################
782: #########################################################
783: ##
784: ## Radio Response Routines
785: ##
786: #########################################################
787: #########################################################
788: sub radio_response_analysis {
789: my ($r,$problem,$problem_analysis,$students) = @_;
790: #
791: if ($env{'form.AnalyzeOver'} !~ /^(tries|time)$/) {
792: $r->print('Bad request');
793: }
794: #
795: my ($resource,$partid,$respid) = ($problem->{'resource'},
796: $problem->{'part'},
797: $problem->{'respid'});
798: #
799: my $analysis_html;
800: my $foildata = $problem_analysis->{'_Foils'};
801: my ($table,$foils,$concepts) = &build_foil_index($problem_analysis);
802: if (! defined($concepts)) {
803: $concepts = [];
804: }
805: #
806: my %true_foils;
807: my $num_true = 0;
808: if (! $problem_analysis->{'answercomputed'}) {
809: foreach my $foil (@$foils) {
810: if ($foildata->{$foil}->{'value'} eq 'true') {
811: $true_foils{$foil}++;
812: }
813: }
814: $num_true = scalar(keys(%true_foils));
815: }
816: #
817: $analysis_html .= $table;
818: # Gather student data
819: my $response_data = &Apache::loncoursedata::get_response_data
820: ([&Apache::lonstatistics::get_selected_sections()],
821: [&Apache::lonstatistics::get_selected_groups()],
822: $Apache::lonstatistics::enrollment_status,
823: $resource->symb,$respid);
824: my $correct; # either a hash reference or a scalar
825: if ($problem_analysis->{'answercomputed'} || scalar(@$concepts) > 1) {
826: # This takes a while for large classes...
827: &Apache::lonstathelpers::GetStudentAnswers($r,$problem,$students,
828: 'Statistics',
829: 'stats_status');
830: foreach my $student (@$students) {
831: my ($idx,@remainder) = split('&',$student->{'answer'});
832: my ($answer) = ($remainder[$idx]=~/^(.*)=([^=]*)$/);
833: $correct->{$student->{'username'}.':'.$student->{'domain'}}=
834: &unescape($answer);
835: }
836: } else {
837: foreach my $foil (keys(%$foildata)) {
838: if ($foildata->{$foil}->{'value'} eq 'true') {
839: $correct = $foildata->{$foil}->{'name'};
840: }
841: }
842: }
843: #
844: if (! defined($response_data) || ref($response_data) ne 'ARRAY' ) {
845: $analysis_html = '<div class="LC_warning">'
846: .&mt('There is no submission data for this resource.')
847: .'</div>';
848: $r->print($analysis_html);
849: return;
850: }
851: #
852: $analysis_html.='<table>';
853: for (my $plot_num = 1;$plot_num<=$env{'form.NumPlots'};$plot_num++) {
854: # classify data ->correct foil -> selected foil
855: my ($restriction_function,
856: $correct_foil_title,$incorrect_foil_title,
857: $pre_graph_text,$post_graph_text,
858: $no_data_text,@extra_data);
859: if ($env{'form.AnalyzeOver'} eq 'tries') {
860: $restriction_function = sub {($_[0]->{'tries'} == $plot_num?1:0)};
861: $correct_foil_title = 'Attempt '.$plot_num;
862: $incorrect_foil_title = 'Attempt '.$plot_num;
863: $pre_graph_text =
864: 'Attempt [_1], [_2] submissions, [_3] correct, [_4] incorrect';
865: $post_graph_text = '';
866: $no_data_text = 'No data exists for attempt [_1]';
867: } elsif ($env{'form.AnalyzeOver'} eq 'time') {
868: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
869: ('startdate_'.$plot_num);
870: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
871: ('enddate_'.$plot_num);
872: ($starttime,$endtime) = &ensure_start_end_times
873: ($starttime,$endtime,
874: &get_time_from_row($response_data->[0]),
875: &get_time_from_row($response_data->[-1]),
876: $plot_num);
877: $pre_graph_text =
878: 'Data from [_6] to [_7]'
879: .'<br />'
880: .'[_2] submissions from [_5] students, [_3] correct, [_4] incorrect';
881: $extra_data[0] = &Apache::lonlocal::locallocaltime($starttime);
882: $extra_data[1] = &Apache::lonlocal::locallocaltime($endtime);
883: #
884: $post_graph_text =
885: &mt('Start time: [_1]',
886: &Apache::lonhtmlcommon::date_setter
887: ('Statistics','startdate_'.$plot_num,$starttime)).
888: '<br />'.
889: &mt('End time: [_1]',
890: &Apache::lonhtmlcommon::date_setter
891: ('Statistics','enddate_'.$plot_num,$endtime));
892: $restriction_function =
893: sub {
894: my $t = $_[0]->{'timestamp'};
895: if ($t >= $starttime && $t < $endtime) {
896: return 1;
897: } else {
898: return 0;
899: }
900: };
901: $no_data_text = 'No data for [_5] to [_6]';
902: }
903: my $foil_choice_data =
904: &classify_response_data($response_data,$correct,
905: $restriction_function);
906: # &Apache::lonstathelpers::log_hash_ref($foil_choice_data);
907: my $answers;
908: if (ref($correct)) {
909: my %tmp;
910: foreach my $foil (values(%$correct)) {
911: $tmp{$foil}++;
912: }
913: $answers = [keys(%tmp)];
914: } else {
915: $answers = [$correct];
916: }
917: # Concept Plot
918: my $concept_plot = '';
919: if (scalar(@$concepts) > 1) {
920: $concept_plot = &RR_concept_plot($concepts,$foil_choice_data,
921: 'Correct Concepts');
922: }
923: # % Choosing plot
924: my $choice_plot = &RR_create_percent_selected_plot
925: ($concepts,$foils,$foil_choice_data,$correct_foil_title);
926: # for each correct foil, how did they mark it? (stacked bar graph)
927: my ($stacked_plot,$count_by_foil);
928: if ($problem_analysis->{'answercomputed'} || $num_true > 1) {
929: ($stacked_plot,$count_by_foil) =
930: &RR_create_stacked_selection_plot($foils,$foil_choice_data,
931: $incorrect_foil_title,
932: \%true_foils);
933: }
934: #
935: if ($concept_plot ne '' ||
936: $choice_plot ne '' ||
937: $stacked_plot ne '') {
938: my $correct = $foil_choice_data->{'_correct'};
939: $correct |= 0;
940: my $incorrect = $foil_choice_data->{'_count'}-$correct;
941: $analysis_html.= '<tr><td colspan="4" align="center">'.
942: '<font size="+1">'.
943: &mt($pre_graph_text,
944: $plot_num,$foil_choice_data->{'_count'},
945: $correct,
946: $incorrect,
947: $foil_choice_data->{'_students'},
948: @extra_data).
949: '</td></tr>'.$/;
950: $analysis_html.=
951: '<tr>'.
952: '<td>'.$concept_plot.'</td>'.
953: '<td>'.$choice_plot.'</td>';
954: if ($stacked_plot ne '') {
955: $analysis_html .=
956: '<td>'.$stacked_plot.'</td>'.
957: '<td>'.&build_foil_key($foils,$count_by_foil).'</td>';
958: } else {
959: $analysis_html .= ('<td></td>'x2);
960: }
961: $analysis_html.='</tr>'.$/;
962: if (defined($post_graph_text)) {
963: $analysis_html.= '<tr><td colspan="4" align="center">'.
964: $post_graph_text.'</td></tr>'.$/;
965: }
966: } elsif ($no_data_text ne '') {
967: $analysis_html.='<tr><td colspan="4" align="center">'.
968: '<div class="LC_warning">'.
969: &mt($no_data_text,
970: $plot_num,$foil_choice_data->{'_count'},
971: $correct,
972: $foil_choice_data->{'_count'}-$correct,
973: @extra_data).
974: '</div>';
975: if (defined($post_graph_text)) {
976: $analysis_html.='<br />'.$post_graph_text;
977: }
978: $analysis_html.='</td></tr>'.$/;
979: }
980: } # end of loop for plots
981: $analysis_html.='</table>';
982: $r->print($analysis_html);
983: }
984:
985: sub ensure_start_end_times {
986: my ($start,$end,$first,$last,$plot_num) = @_;
987: if (! defined($start) || ! defined($end)) {
988: my $sec_in_day = 86400;
989: my ($sday,$smon,$syear) =
990: (localtime($last - $sec_in_day*($plot_num-1)))[3..5];
991: $start = &Time::Local::timelocal(0,0,0,$sday,$smon,$syear);
992: $end = $start + $sec_in_day;
993: if ($plot_num == $env{'form.NumPlots'}) {
994: $start = $first;
995: }
996: }
997: return ($start,$end);
998: }
999:
1000: sub RR_concept_plot {
1001: my ($concepts,$foil_data,$title) = @_;
1002: #
1003: my %correct_by_concept;
1004: my %incorrect_by_concept;
1005: my %true;
1006: foreach my $concept (@$concepts) {
1007: foreach my $foil (@{$concept->{'foils'}}) {
1008: next if (! exists($foil_data->{$foil}));
1009: foreach my $choice (keys(%{$foil_data->{$foil}})) {
1010: if ($choice eq $foil) {
1011: $correct_by_concept{$concept->{'name'}} +=
1012: $foil_data->{$foil}->{$choice};
1013: } else {
1014: $incorrect_by_concept{$concept->{'name'}} +=
1015: $foil_data->{$foil}->{$choice};
1016: }
1017: }
1018: }
1019: }
1020: #
1021: # need arrays for incorrect and correct because we want to use different
1022: # colors for them
1023: my @correct;
1024: #
1025: my $total =0;
1026: for (my $i=0;$i<scalar(@$concepts);$i++) {
1027: my $concept = $concepts->[$i];
1028: $correct[$i] = $correct_by_concept{$concept->{'name'}};
1029: $total += $correct_by_concept{$concept->{'name'}}+
1030: $incorrect_by_concept{$concept->{'name'}};
1031: }
1032: if ($total == 0) { return ''; };
1033: for (my $i=0;$i<=$#correct;$i++) {
1034: $correct[$i] = sprintf('%0f',$correct[$i]/$total*100);
1035: }
1036: my $xlabel = 'concept';
1037: my $plot= &Apache::loncommon::DrawBarGraph($title,
1038: $xlabel,
1039: 'Percent Choosing',
1040: 100,
1041: ['#33ff00','#ff3300'],
1042: undef,
1043: \@correct);
1044: return $plot;
1045: }
1046:
1047: sub RR_create_percent_selected_plot {
1048: my ($concepts,$foils,$foil_data,$title) = @_;
1049: #
1050: if ($foil_data->{'_count'} == 0) { return ''; };
1051: my %correct_selections;
1052: my %incorrect_selections;
1053: foreach my $foil (@$foils) {
1054: # foil_data has format $foil_data->{true_foil}->{selected foil}=count
1055: next if (! exists($foil_data->{$foil}));
1056: while (my ($f,$count)= each(%{$foil_data->{$foil}})) {
1057: if ($f eq $foil) {
1058: $correct_selections{$foil} += $count;
1059: } else {
1060: $incorrect_selections{$f} += $count;
1061: }
1062: }
1063: }
1064: #
1065: # need arrays for incorrect and correct because we want to use different
1066: # colors for them
1067: my @correct;
1068: my @incorrect;
1069: #
1070: my $total = $foil_data->{'_count'};
1071: for (my $i=0;$i<scalar(@$foils);$i++) {
1072: my $foil = $foils->[$i];
1073: $correct[$i] = $correct_selections{$foil};
1074: $incorrect[$i] = $incorrect_selections{$foil};
1075: }
1076: for (my $i=0;$i<=$#correct;$i++) {
1077: $correct[$i] = sprintf('%2f',$correct[$i]/$total*100);
1078: }
1079: for (my $i=0;$i<=$#incorrect;$i++) {
1080: $incorrect[$i] = sprintf('%2f',$incorrect[$i]/$total*100);
1081: }
1082: #
1083: # Put a blank in the data sets between concepts, if there are concepts
1084: my @labels;
1085: if (defined($concepts) && scalar(@$concepts) > 1) {
1086: my @new_correct;
1087: my @new_incorrect;
1088: my $foil_count = 0;
1089: foreach my $concept (@$concepts) {
1090: foreach (@{$concept->{'foils'}}) {
1091: push(@new_correct, $correct[$foil_count]);
1092: push(@new_incorrect,$incorrect[$foil_count]);
1093: push(@labels,++$foil_count);
1094: }
1095: push(@new_correct,'');
1096: push(@new_incorrect,'');
1097: push(@labels,'');
1098: }
1099: @correct = @new_correct;
1100: @incorrect = @new_incorrect;
1101: } else {
1102: @labels = (1 .. scalar(@correct));
1103: }
1104: #
1105: my $xlabel = 'foil chosen';
1106: my $plot= &Apache::loncommon::DrawBarGraph($title,
1107: $xlabel,
1108: 'Percent Choosing',
1109: 100,
1110: ['#33ff00','#ff3300'],
1111: \@labels,
1112: \@correct,
1113: \@incorrect);
1114: return $plot;
1115: }
1116:
1117: sub RR_create_stacked_selection_plot {
1118: my ($foils,$foil_data,$title,$true_foils)=@_;
1119: #
1120: my @dataset; # array of array refs - multicolor rows $datasets[row]->[col]
1121: my @labels;
1122: my $count;
1123: my %column; # maps foil name to column in @datasets
1124: for (my $i=0;$i<scalar(@$foils);$i++) {
1125: my $foil = $foils->[$i];
1126: if (defined($true_foils) && scalar(keys(%$true_foils)) > 0 ) {
1127: next if (! $true_foils->{$foil} );
1128: push(@labels,$i+1);
1129: } else {
1130: next if (! exists($foil_data->{$foil}));
1131: push(@labels,$i+1);
1132: }
1133: next if (! exists($foil_data->{$foils->[$i]}));
1134: $column{$foil}= $count++;
1135: for (my $j=0;$j<scalar(@$foils);$j++) {
1136: my $value = 0;
1137: if ($i != $j ) {
1138: $value += $foil_data->{$foil}->{$foils->[$j]};
1139: }
1140: $dataset[$j]->[$column{$foil}]=$value;
1141: }
1142: }
1143: #
1144: return '' if (! scalar(keys(%column)));
1145: #
1146: my $grand_total = 0;
1147: my %count_per_foil;
1148: while (my ($foil,$bar) = each (%column)) {
1149: my $bar_total = 0;
1150: for (my $j=0;$j<scalar(@dataset);$j++) {
1151: $bar_total += $dataset[$j]->[$bar];
1152: }
1153: next if ($bar_total == 0);
1154: for (my $j=0;$j<scalar(@dataset);$j++) {
1155: $dataset[$j]->[$bar] =
1156: sprintf('%2f',$dataset[$j]->[$bar]/$bar_total * 100);
1157: }
1158: $count_per_foil{$foil}=' ( '.$bar_total.' )';
1159: $grand_total += $bar_total;
1160: }
1161: if ($grand_total == 0) {
1162: return ('',undef);
1163: }
1164: my @empty_row = ();
1165: foreach (@{$dataset[0]}) {
1166: push(@empty_row,0);
1167: }
1168: #
1169: my $graph = &Apache::loncommon::DrawBarGraph
1170: ($title,'Correct Foil','foils chosen Incorrectly',
1171: 100,$plotcolors,\@labels,\@empty_row,@dataset);
1172: return ($graph,\%count_per_foil);
1173: }
1174:
1175:
1176: #########################################################
1177: #########################################################
1178: ##
1179: ## Misc routines
1180: ##
1181: #########################################################
1182: #########################################################
1183:
1184: # if $correct is a hash ref, it is assumed to be indexed by student names.
1185: # the values are assumed to be hash refs with a key of 'answer'.
1186: sub classify_response_data {
1187: my ($full_row_data,$correct,$function) = @_;
1188: my %submission_data;
1189: my %students;
1190: my $max=0;
1191: foreach my $row (@$full_row_data) {
1192: my %subm = &hashify_attempt($row);
1193: if (ref($correct) eq 'HASH') {
1194: $subm{'correct'} = $correct->{$subm{'student'}};
1195: } else {
1196: $subm{'correct'} = $correct;
1197: }
1198: $subm{'submission'} =~ s/=\d+\s*$//;
1199: if (&$function(\%subm)) {
1200: $students{$subm{'student'}}++;
1201: $submission_data{'_count'}++;
1202: if (&submission_is_correct($subm{'award'})) {
1203: $submission_data{'_correct'}++;
1204: }
1205:
1206: if($max<++$submission_data{$subm{'correct'}}->{$subm{'submission'}}) {
1207: $max=$submission_data{$subm{'correct'}}->{$subm{'submission'}};
1208: }
1209: }
1210: }
1211: $submission_data{'_max'} = $max;
1212: $submission_data{'_students'}=scalar(keys(%students));
1213: return \%submission_data;
1214: }
1215:
1216:
1217: #########################################################
1218: #########################################################
1219: ##
1220: ## Option Response Routines
1221: ##
1222: #########################################################
1223: #########################################################
1224: sub OptionResponseAnalysis {
1225: my ($r,$problem,$problem_data,$Students) = @_;
1226: my ($resource,$respid) = ($problem->{'resource'},
1227: $problem->{'respid'});
1228: # Note: part data is not needed.
1229: my $PerformanceData = &Apache::loncoursedata::get_response_data
1230: ([&Apache::lonstatistics::get_selected_sections()],
1231: [&Apache::lonstatistics::get_selected_groups()],
1232: $Apache::lonstatistics::enrollment_status,
1233: $resource->symb,$respid);
1234: if (! defined($PerformanceData) ||
1235: ref($PerformanceData) ne 'ARRAY' ) {
1236: $r->print('<div class="LC_warning">'
1237: .&mt('There is no student data for this problem.')
1238: .'</div>'
1239: );
1240: } else {
1241: $r->rflush();
1242: if ($env{'form.AnalyzeOver'} eq 'tries') {
1243: my $analysis_html = &OR_tries_analysis($r,
1244: $PerformanceData,
1245: $problem_data);
1246: $r->print($analysis_html);
1247: $r->rflush();
1248: } elsif ($env{'form.AnalyzeOver'} eq 'time') {
1249: my $analysis_html = &OR_time_analysis($PerformanceData,
1250: $problem_data);
1251: $r->print($analysis_html);
1252: $r->rflush();
1253: } else {
1254: $r->print('div class="LC_warning"'
1255: .&mt('The analysis you have selected is not supported at this time.')
1256: .'</div>'
1257: );
1258: }
1259: }
1260: }
1261:
1262: #########################################################
1263: #
1264: # Option Response: tries Analysis
1265: #
1266: #########################################################
1267: sub OR_tries_analysis {
1268: my ($r,$PerformanceData,$ORdata) = @_;
1269: my $mintries = 1;
1270: my $maxtries = $env{'form.NumPlots'};
1271: my ($table,$Foils,$Concepts) = &build_foil_index($ORdata);
1272: if (! defined($Concepts)) {
1273: $Concepts = [];
1274: }
1275: my %response_data = &OR_analyze_by_tries($r,$PerformanceData,
1276: $mintries,$maxtries);
1277: my $analysis = '';
1278: #
1279: # Compute the data necessary to make the plots
1280: my @foil_plot;
1281: my @concept_data;
1282: for (my $j=0;$j<=scalar(@$Concepts);$j++) {
1283: my $concept = $Concepts->[$j];
1284: foreach my $foilid (@{$concept->{'foils'}}) {
1285: for (my $try=$mintries;$try<=$maxtries;$try++) {
1286: # concept analysis data
1287: $concept_data[$j]->[$try]->{'_correct'} +=
1288: $response_data{$foilid}->[$try]->{'_correct'};
1289: $concept_data[$j]->[$try]->{'_total'} +=
1290: $response_data{$foilid}->[$try]->{'_total'};
1291: #
1292: # foil analysis data
1293: if ($response_data{$foilid}->[$try]->{'_total'} == 0) {
1294: push(@{$foil_plot[$try]->{'_correct'}},0);
1295: } else {
1296: push(@{$foil_plot[$try]->{'_correct'}},
1297: 100*$response_data{$foilid}->[$try]->{'_correct'}/
1298: $response_data{$foilid}->[$try]->{'_total'});
1299: }
1300: foreach my $option (@{$ORdata->{'_Options'}}) {
1301: push(@{$foil_plot[$try]->{'_total'}},
1302: $response_data{$foilid}->[$try]->{'_total'});
1303: if ($response_data{$foilid}->[$try]->{'_total'} == 0) {
1304: push (@{$foil_plot[$try]->{$option}},0);
1305: } else {
1306: if ($response_data{$foilid}->[$try]->{'_total'} ==
1307: $response_data{$foilid}->[$try]->{'_correct'}) {
1308: push(@{$foil_plot[$try]->{$option}},0);
1309: } else {
1310: push (@{$foil_plot[$try]->{$option}},
1311: 100 *
1312: $response_data{$foilid}->[$try]->{$option} /
1313: ($response_data{$foilid}->[$try]->{'_total'}
1314: -
1315: $response_data{$foilid}->[$try]->{'_correct'}
1316: ));
1317: }
1318: }
1319: } # End of foreach my $option
1320: }
1321: } # End of foreach my $foilid
1322: } # End of concept loops
1323: #
1324: # Build a table for the plots
1325: my $analysis_html = "<br /><table>\n";
1326: my $optionkey = &build_option_index($ORdata);
1327: my $num_concepts = 1;
1328: if (defined($Concepts)) { $num_concepts = scalar(@$Concepts); }
1329: #
1330: for (my $try=$mintries;$try<=$maxtries;$try++) {
1331: if (! defined($response_data{'_total'}->[$try]) ||
1332: $response_data{'_total'}->[$try] == 0) {
1333: if ($try > 1) {
1334: $analysis_html.= '<tr><td colspan="4">'
1335: .'<div class="LC_info">'
1336: .&mt('None of the selected students attempted the problem more than [quant,_1,time].'
1337: ,$try-1)
1338: .'</div>'
1339: .'</td></tr>';
1340: } else {
1341: $analysis_html.= '<tr><td colspan="4">'
1342: .'<div class="LC_info">'
1343: .&mt('None of the selected students have attempted the problem.')
1344: .'</div>'
1345: .'</td></tr>';
1346: }
1347: last;
1348: }
1349: my $concept_graph='';
1350: if ($num_concepts > 1) {
1351: #
1352: # Create concept plot
1353: my @concept_plot_data;
1354: for (my $j=0;$j<=$#concept_data;$j++) {
1355: my $total = $concept_data[$j]->[$try]->{'_total'};
1356: if ($total == 0) {
1357: $concept_plot_data[$j] = 0;
1358: } else {
1359: $concept_plot_data[$j] = 100 *
1360: sprintf('%0.3f',
1361: $concept_data[$j]->[$try]->{'_correct'} /
1362: $total);
1363: }
1364: }
1365: #
1366: $concept_graph = &Apache::loncommon::DrawBarGraph
1367: ('Correct Concepts','Concept Number','Percent Correct',
1368: 100,$plotcolors,undef,\@concept_plot_data,{xskip=>1});
1369: }
1370: #
1371: # Create Foil Plots
1372: my $data_count = $response_data{'_total'}->[$try];
1373: my $correct = $response_data{'_correct'}->[$try];
1374: $correct |= 0;
1375: my @Datasets;
1376: foreach my $option ('_correct',@{$ORdata->{'_Options'}}) {
1377: next if (! exists($foil_plot[$try]->{$option}));
1378: push(@Datasets,$foil_plot[$try]->{$option});
1379: }
1380: #
1381: # Put a blank in the data set between concepts
1382: for (my $set =0;$set<=$#Datasets;$set++) {
1383: my @Data = @{$Datasets[$set]};
1384: my $idx = 0;
1385: foreach my $concept (@{$Concepts}) {
1386: foreach my $foilid (@{$concept->{'foils'}}) {
1387: $Datasets[$set]->[$idx++]=shift(@Data);
1388: }
1389: if ($concept->{'name'} ne $Concepts->[-1]->{'name'}) {
1390: $Datasets[$set]->[$idx++] = 0;
1391: }
1392: }
1393: }
1394: #
1395: # Set up the labels needed for the bar graph
1396: my @Labels;
1397: my $idx = 1;
1398: foreach my $concept (@{$Concepts}) {
1399: foreach my $foilid (@{$concept->{'foils'}}) {
1400: push(@Labels,$idx++);
1401: }
1402: push(@Labels,'');
1403: }
1404: #
1405: my $correct_graph = &Apache::loncommon::DrawBarGraph
1406: ('Correct Statements','Statement','% Answered Correct',
1407: 100,$plotcolors,\@Labels,$Datasets[0],{xskip=>1});
1408:
1409: #
1410: #
1411: next if (! defined($Datasets[0]));
1412: for (my $i=0; $i< scalar(@{$Datasets[0]});$i++) {
1413: $Datasets[0]->[$i]=0;
1414: }
1415: my $count = $response_data{'_total'}->[$try] -
1416: $response_data{'_correct'}->[$try];
1417: my $incorrect_graph = &Apache::loncommon::DrawBarGraph
1418: ('Incorrect Statements','Statement','% Chosen Incorrectly',
1419: 100,$plotcolors,\@Labels,@Datasets,{xskip=>1});
1420: $analysis_html.=
1421: '<tr><td colspan="4" align="center">'.
1422: '<font size="+1">'.
1423: &mt('Attempt [_1], [_2] submissions, [_3] correct, [_4] incorrect',
1424: $try,$data_count,$correct,$data_count-$correct).
1425: '</font>'.'</td></tr>'.$/.
1426: '<tr>'.
1427: '<td>'.$concept_graph.'</td>'.
1428: '<td>'.$correct_graph.'</td>'.
1429: '<td>'.$incorrect_graph.'</td>'.
1430: '<td>'.$optionkey.'<td>'.
1431: '</tr>'.$/;
1432: }
1433: $analysis_html .= "</table>\n";
1434: $table .= $analysis_html;
1435: return $table;
1436: }
1437:
1438: sub OR_analyze_by_tries {
1439: my ($r,$PerformanceData,$mintries,$maxtries) = @_;
1440: my %Trydata;
1441: $mintries = 1 if (! defined($mintries) || $mintries < 1);
1442: $maxtries = $mintries if (! defined($maxtries) || $maxtries < $mintries);
1443: my @students;
1444: foreach my $row (@$PerformanceData) {
1445: next if (! defined($row));
1446: my $tries = &get_tries_from_row($row);
1447: my %Row = &Process_OR_Row($row);
1448: next if (! %Row);
1449: my $student_id = $row->[&Apache::loncoursedata::RD_student_id()];
1450: $students[$tries]->{$student_id}++;
1451: while (my ($foilid,$href) = each(%Row)) {
1452: if (! ref($href)) {
1453: $Trydata{$foilid}->[$tries] += $href;
1454: next;
1455: }
1456: while (my ($option,$value) = each(%$href)) {
1457: $Trydata{$foilid}->[$tries]->{$option}+=$value;
1458: }
1459: }
1460: }
1461: for (my $try=$mintries;$try<=$maxtries;$try++) {
1462: $Trydata{'_studentcount'}->[$try] = scalar(keys(%{$students[$try]}));
1463: }
1464: return %Trydata;
1465: }
1466:
1467: #########################################################
1468: #
1469: # Option Response: Time Analysis
1470: #
1471: #########################################################
1472: sub OR_time_analysis {
1473: my ($performance_data,$ORdata) = @_;
1474: my ($table,$Foils,$Concepts) = &build_foil_index($ORdata);
1475: my $foilkey = &build_option_index($ORdata);
1476: my $num_concepts = 1;
1477: if (defined($Concepts)) { $num_concepts = scalar(@$Concepts); }
1478: #
1479: if ($num_concepts < 2) {
1480: $table = '<h3>'.
1481: &mt('Not enough data for concept analysis. '.
1482: 'Performing Foil Analysis').
1483: '</h3>'.$table;
1484: }
1485: #
1486: my $num_plots = $env{'form.NumPlots'};
1487: my $num_data = scalar(@$performance_data)-1;
1488: #
1489: my $current_index;
1490: $table .= "<table>\n";
1491: for (my $i=0;$i<$num_plots;$i++) {
1492: ##
1493: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
1494: ('startdate_'.$i);
1495: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
1496: ('enddate_'.$i);
1497: if (! defined($starttime) || ! defined($endtime)) {
1498: my $sec_in_day = 86400;
1499: my $last_sub_time = &get_time_from_row($performance_data->[-1]);
1500: my ($sday,$smon,$syear) =
1501: (localtime($last_sub_time - $sec_in_day*$i))[3..5];
1502: $starttime = &Time::Local::timelocal(0,0,0,$sday,$smon,$syear);
1503: $endtime = $starttime + $sec_in_day;
1504: if ($i == ($num_plots -1 )) {
1505: $starttime = &get_time_from_row($performance_data->[0]);
1506: }
1507: }
1508: $table .= '<tr><td colspan="4" align="center"><font size="+1">'.
1509: &mt('Data from [_1] to [_2]',
1510: &Apache::lonlocal::locallocaltime($starttime),
1511: &Apache::lonlocal::locallocaltime($endtime)).
1512: '</font></td></tr>'.$/;
1513: my $startdateform = &Apache::lonhtmlcommon::date_setter
1514: ('Statistics','startdate_'.$i,$starttime);
1515: my $enddateform = &Apache::lonhtmlcommon::date_setter
1516: ('Statistics','enddate_'.$i,$endtime);
1517: #
1518: my $begin_index;
1519: my $end_index;
1520: my $j;
1521: while (++$j < scalar(@$performance_data)) {
1522: last if (&get_time_from_row($performance_data->[$j])
1523: > $starttime);
1524: }
1525: $begin_index = $j;
1526: while ($j < scalar(@$performance_data)) {
1527: if (&get_time_from_row($performance_data->[$j]) > $endtime) {
1528: last;
1529: } else {
1530: $j++;
1531: }
1532: }
1533: $end_index = $j;
1534: ##
1535: my ($processed_time_data,$correct,$data_count,$student_count) =
1536: &OR_time_process_data($performance_data,$begin_index,$end_index);
1537: $correct |= 0;
1538: ##
1539: $table .= '<tr><td colspan="4" align="center"><font size="+1">'.
1540: &mt('[_1] submissions from [_2] students, [_3] correct, [_4] incorrect',
1541: $data_count,$student_count,$correct,$data_count-$correct).
1542: '</font></td></tr>'.$/;
1543: my $concept_correct_plot = '';
1544: if ($num_concepts > 1) {
1545: $concept_correct_plot =
1546: &OR_Concept_Time_Analysis($processed_time_data,
1547: $correct,$data_count,$student_count,
1548: $ORdata,$Concepts);
1549: }
1550: my ($foil_correct_plot,$foil_incorrect_plot) =
1551: &OR_Foil_Time_Analysis($processed_time_data,
1552: $correct,$data_count,$student_count,
1553: $ORdata,$Foils,$Concepts);
1554: $table .= '<tr>'.
1555: '<td>'.$concept_correct_plot.'</td>'.
1556: '<td>'.$foil_correct_plot.'</td>'.
1557: '<td>'.$foil_incorrect_plot.'</td>'.
1558: '<td align="left" valign="top">'.$foilkey.'</td></tr>'.$/;
1559: $table .= '<tr><td colspan="4" align="center">'.
1560: &mt('Start time: [_1]',$startdateform).'<br />'.
1561: &mt('End time: [_1]',$enddateform).'</td></tr>'.$/;
1562: $table.= '<tr><td colspan="4"> </td></tr>'.$/;
1563: }
1564: $table .= '</table>';
1565: #
1566: return $table;
1567: }
1568:
1569: sub OR_Foil_Time_Analysis {
1570: my ($processed_time_data,$correct,$data_count,$student_count,
1571: $ORdata,$Foils,$Concepts) = @_;
1572: if ($data_count <= 0) {
1573: return ('<div class="LC_warning">'
1574: .&mt('There is no data to plot.')
1575: .'</div>'
1576: ,''
1577: );
1578: }
1579: my $analysis_html;
1580: my @plotdata;
1581: my @labels;
1582: foreach my $concept (@{$Concepts}) {
1583: foreach my $foil (@{$concept->{'foils'}}) {
1584: push(@labels,scalar(@labels)+1);
1585: my $total = $processed_time_data->{$foil}->{'_total'};
1586: if ($total == 0) {
1587: push(@{$plotdata[0]},0);
1588: } else {
1589: push(@{$plotdata[0]},
1590: 100 * $processed_time_data->{$foil}->{'_correct'} / $total);
1591: }
1592: my $total_incorrect = $total - $processed_time_data->{$foil}->{'_correct'};
1593: for (my $i=0;$i<scalar(@{$ORdata->{'_Options'}});$i++) {
1594: my $option = $ORdata->{'_Options'}->[$i];
1595: if ($total_incorrect == 0) {
1596: push(@{$plotdata[$i+1]},0);
1597: } else {
1598: push(@{$plotdata[$i+1]},
1599: 100 * $processed_time_data->{$foil}->{$option} / $total_incorrect);
1600: }
1601: }
1602: }
1603: # Put in a blank one
1604: push(@labels,'');
1605: push(@{$plotdata[0]},0);
1606: for (my $i=0;$i<scalar(@{$ORdata->{'_Options'}});$i++) {
1607: push(@{$plotdata[$i+1]},0);
1608: }
1609: }
1610: #
1611: # Create the plot
1612: my $correct_plot = &Apache::loncommon::DrawBarGraph('Correct Statements',
1613: 'Statement Number',
1614: 'Percent Correct',
1615: 100,
1616: $plotcolors,
1617: undef,
1618: $plotdata[0],
1619: {xskip=>1});
1620: for (my $j=0; $j< scalar(@{$plotdata[0]});$j++) {
1621: $plotdata[0]->[$j]=0;
1622: }
1623: my $incorrect_plot =
1624: &Apache::loncommon::DrawBarGraph('Incorrect Statements',
1625: 'Statement Number',
1626: 'Incorrect Option Choice',
1627: 100,
1628: $plotcolors,
1629: undef,
1630: @plotdata,{xskip=>1});
1631: return ($correct_plot,$incorrect_plot);
1632: }
1633:
1634: sub OR_Concept_Time_Analysis {
1635: my ($processed_time_data,$correct,$data_count,$student_count,
1636: $ORdata,$Concepts) = @_;
1637: return '' if ($data_count == 0);
1638: #
1639: # Put the data in plottable form
1640: my @plotdata;
1641: foreach my $concept (@$Concepts) {
1642: my ($total,$correct);
1643: foreach my $foil (@{$concept->{'foils'}}) {
1644: $total += $processed_time_data->{$foil}->{'_total'};
1645: $correct += $processed_time_data->{$foil}->{'_correct'};
1646: }
1647: if ($total == 0) {
1648: push(@plotdata,0);
1649: } else {
1650: push(@plotdata,100 * $correct / $total);
1651: }
1652: }
1653: #
1654: # Create the plot
1655: return &Apache::loncommon::DrawBarGraph('Correct Concepts',
1656: 'Concept Number',
1657: 'Percent Correct',
1658: 100,
1659: $plotcolors,
1660: undef,
1661: \@plotdata,{xskip=>1});
1662: }
1663:
1664: sub OR_time_process_data {
1665: my ($performance_data,$begin_index,$end_index)=@_;
1666: my %processed_time_data;
1667: my %distinct_students;
1668: my ($correct,$data_count);
1669: if (($begin_index == $end_index) &&
1670: ($end_index != scalar(@$performance_data)-1)) {
1671: return undef;
1672: }
1673: # Be sure we include the last one if we are asked for it.
1674: # That we have to correct here (and not when $end_index is
1675: # given a value) should probably be considered a bug.
1676: if ($end_index == scalar(@$performance_data)-1) {
1677: $end_index++;
1678: }
1679: my $count;
1680: for (my $i=$begin_index;$i<$end_index;$i++) {
1681: my $attempt = $performance_data->[$i];
1682: $count++;
1683: next if (! defined($attempt));
1684: my %attempt = &Process_OR_Row($attempt);
1685: $data_count++;
1686: $correct += $attempt{'_correct'};
1687: $distinct_students{$attempt->[&Apache::loncoursedata::RD_student_id()]}++;
1688: while (my ($foilid,$href) = each(%attempt)) {
1689: if (! ref($href)) {
1690: $processed_time_data{$foilid} += $href;
1691: next;
1692: }
1693: while (my ($option,$value) = each(%$href)) {
1694: $processed_time_data{$foilid}->{$option}+=$value;
1695: }
1696: }
1697: }
1698: return (\%processed_time_data,$correct,$data_count,
1699: scalar(keys(%distinct_students)));
1700: }
1701:
1702: sub build_foil_index {
1703: my ($ORdata) = @_;
1704: return if (! exists($ORdata->{'_Foils'}));
1705: my %Foildata = %{$ORdata->{'_Foils'}};
1706: my @Foils = sort(keys(%Foildata));
1707: my %Concepts;
1708: foreach my $foilid (@Foils) {
1709: push(@{$Concepts{$Foildata{$foilid}->{'_Concept'}}},
1710: $foilid);
1711: }
1712: undef(@Foils);
1713: # Having gathered the concept information in a hash, we now translate it
1714: # into an array because we need to be consistent about order.
1715: # Also put the foils in order, too.
1716: my $sortfunction = sub {
1717: my %Numbers = (one => 1,
1718: two => 2,
1719: three => 3,
1720: four => 4,
1721: five => 5,
1722: six => 6,
1723: seven => 7,
1724: eight => 8,
1725: nine => 9,
1726: ten => 10,);
1727: my $a1 = lc($a);
1728: my $b1 = lc($b);
1729: if (exists($Numbers{$a1})) {
1730: $a1 = $Numbers{$a1};
1731: }
1732: if (exists($Numbers{$b1})) {
1733: $b1 = $Numbers{$b1};
1734: }
1735: if (($a1 =~/^\d+$/) && ($b1 =~/^\d+$/)) {
1736: return $a1 <=> $b1;
1737: } else {
1738: return $a1 cmp $b1;
1739: }
1740: };
1741: my @Concepts;
1742: foreach my $concept (sort $sortfunction (keys(%Concepts))) {
1743: if (! defined($Concepts{$concept})) {
1744: $Concepts{$concept}=[];
1745: # next;
1746: }
1747: push(@Concepts,{ name => $concept,
1748: foils => [@{$Concepts{$concept}}]});
1749: push(@Foils,(@{$Concepts{$concept}}));
1750: }
1751: #
1752: # Build up the table of row labels.
1753: my $table = &Apache::loncommon::start_data_table();
1754: if (@Concepts > 1) {
1755: $table .= &Apache::loncommon::start_data_table_header_row().
1756: '<th>'.&mt('Concept Number').'</th>'.
1757: '<th>'.&mt('Concept').'</th>'.
1758: '<th>'.&mt('Foil Number').'</th>'.
1759: '<th>'.&mt('Foil Name').'</th>'.
1760: '<th>'.&mt('Foil Text').'</th>'.
1761: '<th>'.&mt('Correct Value').'</th>'.
1762: &Apache::loncommon::end_data_table_header_row();
1763: } else {
1764: $table .= &Apache::loncommon::start_data_table_header_row().
1765: '<th>'.&mt('Foil Number').'</th>'.
1766: '<th>'.&mt('Foil Name').'</th>'.
1767: '<th>'.&mt('Foil Text').'</th>'.
1768: '<th>'.&mt('Correct Value').'</th>'.
1769: &Apache::loncommon::end_data_table_header_row();
1770: }
1771: my $conceptindex = 1;
1772: my $foilindex = 1;
1773: foreach my $concept (@Concepts) {
1774: my @FoilsInConcept = @{$concept->{'foils'}};
1775: my $firstfoil = shift(@FoilsInConcept);
1776: if (@Concepts > 1) {
1777: $table .= &Apache::loncommon::start_data_table_row().
1778: '<td>'.$conceptindex.'</td>'.
1779: '<td>'.&HTML::Entities::encode($concept->{'name'},'<>&"').'</td>'.
1780: '<td>'.$foilindex++.'</td>'.
1781: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'name'},'<>&"').'</td>'.
1782: '<td>'.$Foildata{$firstfoil}->{'text'}.'</td>'.
1783: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'value'},'<>&"').'</td>'.
1784: &Apache::loncommon::end_data_table_row();
1785: } else {
1786: $table .= &Apache::loncommon::start_data_table_row().
1787: '<td>'.$foilindex++.'</td>'.
1788: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'name'},'<>&"').'</td>'.
1789: '<td>'.$Foildata{$firstfoil}->{'text'}.'</td>'.
1790: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'value'},'<>&"').'</td>'.
1791: &Apache::loncommon::end_data_table_row();
1792: }
1793: foreach my $foilid (@FoilsInConcept) {
1794: if (@Concepts > 1) {
1795: $table .= &Apache::loncommon::start_data_table_row().
1796: '<td></td>'.
1797: '<td></td>'.
1798: '<td>'.$foilindex.'</td>'.
1799: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'name'},'<>&"').'</td>'.
1800: '<td>'.$Foildata{$foilid}->{'text'}.'</td>'.
1801: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'value'},'<>&"').'</td>'.
1802: &Apache::loncommon::end_data_table_row();
1803: } else {
1804: $table .= &Apache::loncommon::start_data_table_row().
1805: '<td>'.$foilindex.'</td>'.
1806: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'name'},'<>&"').'</td>'.
1807: '<td>'.$Foildata{$foilid}->{'text'}.'</td>'.
1808: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'value'},'<>&"').'</td>'.
1809: &Apache::loncommon::end_data_table_row();
1810: }
1811: } continue {
1812: $foilindex++;
1813: }
1814: } continue {
1815: $conceptindex++;
1816: }
1817: $table .= &Apache::loncommon::end_data_table();
1818: #
1819: # Build option index with color stuff
1820: return ($table,\@Foils,\@Concepts);
1821: }
1822:
1823: sub build_option_index {
1824: my ($ORdata)= @_;
1825: my $table = "<table>\n";
1826: my $optionindex = 0;
1827: my @Rows;
1828: foreach my $option (&mt('correct option chosen'),@{$ORdata->{'_Options'}}) {
1829: my $color = $plotcolors->[$optionindex++];
1830: push (@Rows,
1831: '<tr>'.
1832: '<td bgcolor="'.$color.'">'.
1833: '<font color="'.$color.'">'.('*'x3).'</font>'.'</td>'.
1834: '<td>'.&HTML::Entities::encode($option,'<>&"').'</td>'.
1835: "</tr>\n");
1836: }
1837: shift(@Rows); # Throw away 'correct option chosen' color
1838: $table .= join('',reverse(@Rows));
1839: $table .= "</table>\n";
1840: }
1841:
1842: sub build_foil_key {
1843: my ($foils,$extra_data)= @_;
1844: if (! defined($extra_data)) { $extra_data = {}; }
1845: my $table = "<table>\n";
1846: my $foil_index = 0;
1847: my @rows;
1848: foreach my $foil (&mt('correct foil chosen'),@{$foils}) {
1849: my $color = $plotcolors->[$foil_index++];
1850: push (@rows,
1851: '<tr>'.
1852: '<td bgcolor="'.$color.'" class="key">'.
1853: '<font color="'.$color.'">'.('*'x4).'</font></td>'.
1854: '<td>'.&HTML::Entities::encode($foil,'<>&"').
1855: (' 'x2).$extra_data->{$foil}.'</td>'.
1856: "</tr>\n");
1857: }
1858: shift(@rows); # Throw away 'correct foil chosen' color
1859: $table .= join('',reverse(@rows));
1860: $table .= "</table>\n";
1861: }
1862:
1863: #########################################################
1864: #########################################################
1865: ##
1866: ## Generic Interface Routines
1867: ##
1868: #########################################################
1869: #########################################################
1870: sub CreateInterface {
1871: ##
1872: ## Environment variable initialization
1873: if (! exists($env{'form.AnalyzeOver'})) {
1874: $env{'form.AnalyzeOver'} = 'tries';
1875: }
1876: ##
1877: ## Build the menu
1878: my $Str = '';
1879: $Str .= '<p>';
1880: $Str .= &Apache::loncommon::start_data_table();
1881: $Str .= &Apache::loncommon::start_data_table_header_row();
1882: $Str .= '<th>'.&mt('Sections').'</th>';
1883: $Str .= '<th>'.&mt('Groups').'</th>';
1884: $Str .= '<th>'.&mt('Access Status').'</th>';
1885: $Str .= '<th>'.&mt('Options').'</th>';
1886: $Str .= &Apache::loncommon::end_data_table_header_row();
1887: ##
1888: ##
1889: $Str .= &Apache::loncommon::start_data_table_row();
1890: $Str .= '<td align="center">'."\n";
1891: $Str .= &Apache::lonstatistics::SectionSelect('Section','multiple',5);
1892: $Str .= '</td>';
1893: #
1894: $Str .= '<td align="center">'."\n";
1895: $Str .= &Apache::lonstatistics::GroupSelect('Group','multiple',5);
1896: $Str .= '</td>';
1897: #
1898: $Str .= '<td align="center">';
1899: $Str .= &Apache::lonhtmlcommon::StatusOptions(undef,undef,5);
1900: $Str .= '</td>';
1901: #
1902: ##
1903: ##
1904: $Str .= '<td valign="top">';
1905: ##
1906: my $showprob_checkbox =
1907: '<input type="checkbox" name="show_prob" value="true"';
1908: if ($env{'form.show_prob'} eq 'true') {
1909: $showprob_checkbox .= ' checked="checked"';
1910: }
1911: $showprob_checkbox.= ' />';
1912: $Str.= '<span class="LC_nobreak"><label>'.
1913: $showprob_checkbox.' '.&mt('Show problem').
1914: '</label></span><br />';
1915: ##
1916: my $analyze_selector = '<select name="AnalyzeOver" >';
1917: $analyze_selector .= '<option value="tries" ';
1918: if (! exists($env{'form.AnalyzeOver'}) ||
1919: $env{'form.AnalyzeOver'} eq 'tries'){
1920: # Default to tries
1921: $analyze_selector .= ' selected="selected" ';
1922: }
1923: $analyze_selector .= '>'.&mt('Tries').'</option>';
1924: $analyze_selector .= '<option value="time" ';
1925: $analyze_selector .= ' selected ' if ($env{'form.AnalyzeOver'} eq 'time');
1926: $analyze_selector .= '>'.&mt('Time').'</option>';
1927: $analyze_selector .= '</select>';
1928: $Str .= '<span class="LC_nobreak"><label>'.
1929: &mt('Analyze Over [_1] [_2]',
1930: $analyze_selector,
1931: &Apache::loncommon::help_open_topic('Analysis_Analyze_Over')).
1932: '</label></span><br />'.$/;
1933: ##
1934: my $numplots_selector = '<select name="NumPlots">';
1935: if (! exists($env{'form.NumPlots'})
1936: || $env{'form.NumPlots'} < 1
1937: || $env{'form.NumPlots'} > 20) {
1938: $env{'form.NumPlots'} = 5;
1939: }
1940: foreach my $i (1,2,3,4,5,6,7,8,10,15,20) {
1941: $numplots_selector .= '<option value="'.$i.'" ';
1942: if ($env{'form.NumPlots'} == $i) { $numplots_selector.=' selected="selected" '; }
1943: $numplots_selector .= '>'.$i.'</option>';
1944: }
1945: $numplots_selector .= '</select>';
1946: $Str .= '<span class="LC_nobreak"><label>'.&mt('Number of Plots [_1]',$numplots_selector).
1947: '</label></span><br />';
1948: ##
1949: $Str .= '</td>';
1950: ##
1951: ##
1952: $Str .= &Apache::loncommon::end_data_table_row();
1953: $Str .= &Apache::loncommon::end_data_table();
1954: $Str .= '<p class="LC_nobreak"><label>'
1955: .&mt('Status: [_1]',
1956: '<input type="text" name="stats_status"'
1957: .' size="60" value="" readonly="readonly" />')
1958: .'</label></p>';
1959: $Str .= '</p>';
1960: return $Str;
1961: }
1962:
1963: #########################################################
1964: #########################################################
1965: ##
1966: ## Misc Option Response functions
1967: ##
1968: #########################################################
1969: #########################################################
1970: sub get_time_from_row {
1971: my ($row) = @_;
1972: if (ref($row)) {
1973: return $row->[&Apache::loncoursedata::RD_timestamp()];
1974: }
1975: return undef;
1976: }
1977:
1978: sub get_tries_from_row {
1979: my ($row) = @_;
1980: if (ref($row)) {
1981: return $row->[&Apache::loncoursedata::RD_tries()];
1982: }
1983: return undef;
1984: }
1985:
1986: sub hashify_attempt {
1987: my ($row) = @_;
1988: my %attempt;
1989: $attempt{'student'} = $row->[&Apache::loncoursedata::RD_sname()];
1990: $attempt{'tries'} = $row->[&Apache::loncoursedata::RD_tries()];
1991: $attempt{'submission'} = &unescape($row->[&Apache::loncoursedata::RD_submission()]);
1992: $attempt{'award'} = $row->[&Apache::loncoursedata::RD_awarddetail()];
1993: $attempt{'timestamp'} = $row->[&Apache::loncoursedata::RD_timestamp()];
1994: return %attempt;
1995: }
1996:
1997: sub Process_OR_Row {
1998: my ($row) = @_;
1999: my %RowData;
2000: # my $student_id = $row->[&Apache::loncoursedata::RD_student_id()];
2001: my $award = $row->[&Apache::loncoursedata::RD_awarddetail()];
2002: my $grading = $row->[&Apache::loncoursedata::RD_response_eval()];
2003: my $submission = $row->[&Apache::loncoursedata::RD_submission()];
2004: my $time = $row->[&Apache::loncoursedata::RD_timestamp()];
2005: # my $tries = $row->[&Apache::loncoursedata::RD_tries()];
2006: return undef if ($award eq 'MISSING_ANSWER');
2007: if (&submission_is_correct($award)) {
2008: $RowData{'_correct'} = 1;
2009: }
2010: $RowData{'_total'} = 1;
2011: my @Foilgrades = split('&',$grading);
2012: my @Foilsubs = split('&',$submission);
2013: for (my $j=0;$j<=$#Foilgrades;$j++) {
2014: my ($foilid,$correct) = split('=',$Foilgrades[$j]);
2015: $foilid = &unescape($foilid);
2016: my (undef,$submission) = split('=',$Foilsubs[$j]);
2017: if ($correct) {
2018: $RowData{$foilid}->{'_correct'}++;
2019: } else {
2020: $submission = &unescape($submission);
2021: $RowData{$foilid}->{$submission}++;
2022: }
2023: $RowData{$foilid}->{'_total'}++;
2024: }
2025: return %RowData;
2026: }
2027:
2028: sub submission_is_correct {
2029: my ($award) = @_;
2030: if ($award =~ /(APPROX_ANS|EXACT_ANS)/) {
2031: return 1;
2032: } else {
2033: return 0;
2034: }
2035: }
2036:
2037: 1;
2038:
2039: __END__
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