File:
[LON-CAPA] /
loncom /
interface /
statistics /
lonproblemanalysis.pm
Revision
1.130:
download - view:
text,
annotated -
select for diffs
Thu Jan 4 02:44:07 2007 UTC (17 years, 6 months ago) by
albertel
Branches:
MAIN
CVS tags:
version_2_7_X,
version_2_7_1,
version_2_7_0,
version_2_6_X,
version_2_6_99_1,
version_2_6_99_0,
version_2_6_3,
version_2_6_2,
version_2_6_1,
version_2_6_0,
version_2_5_X,
version_2_5_99_1,
version_2_5_99_0,
version_2_5_2,
version_2_5_1,
version_2_5_0,
version_2_4_X,
version_2_4_99_0,
version_2_4_2,
version_2_4_1,
version_2_4_0,
version_2_3_X,
version_2_3_99_0,
version_2_3_2,
version_2_3_1,
version_2_3_0,
HEAD
- updating to work (simplely) with multiple correct answers
1: # The LearningOnline Network with CAPA
2: #
3: # $Id: lonproblemanalysis.pm,v 1.130 2007/01/04 02:44:07 albertel 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: $r->print(&CreateInterface());
77: #
78: my @Students = @Apache::lonstatistics::Students;
79: #
80: if (@Students < 1 && exists($env{'form.firstrun'})) {
81: $r->print('<h2>There are no students in the sections/groups selected</h2>');
82: }
83: #
84: my @CacheButtonHTML =
85: &Apache::lonstathelpers::manage_caches($r,'Statistics','stats_status');
86: $r->rflush();
87: #
88: my $problem_types = '(option|radiobutton|numerical)';
89: if (exists($env{'form.problemchoice'}) &&
90: ! exists($env{'form.SelectAnother'})) {
91: foreach my $button (@SubmitButtons) {
92: if ($button->{'name'} eq 'break') {
93: $r->print("<br />\n");
94: } else {
95: $r->print('<input type="submit" name="'.$button->{'name'}.'" '.
96: 'value="'.&mt($button->{'text'}).'" />');
97: $r->print(' 'x5);
98: }
99: }
100: foreach my $html (@CacheButtonHTML) {
101: $r->print($html.(' 'x5));
102: }
103: #
104:
105: # This is commented out pending actual implementation of
106: # CSV and Excel output.
107: #$r->print(&Apache::lonstathelpers::submission_report_form
108: # ('problem_analysis'));
109: #
110: $r->print('<hr />');
111: $r->rflush();
112: #
113: # Determine which problem we are to analyze
114: my $current_problem = &Apache::lonstathelpers::get_target_from_id
115: ($env{'form.problemchoice'});
116: #
117: my ($navmap,$prev,$curr,$next) =
118: &Apache::lonstathelpers::get_prev_curr_next($current_problem,
119: $problem_types,
120: 'response',
121: );
122: if (exists($env{'form.PrevProblemAnalysis'}) && defined($prev)) {
123: $current_problem = $prev;
124: } elsif (exists($env{'form.NextProblemAnalysis'}) && defined($next)) {
125: $current_problem = $next;
126: } else {
127: $current_problem = $curr;
128: }
129: #
130: # Store the current problem choice and send it out in the form
131: $env{'form.problemchoice'} =
132: &Apache::lonstathelpers::make_target_id($current_problem);
133: $r->print('<input type="hidden" name="problemchoice" value="'.
134: $env{'form.problemchoice'}.'" />');
135: #
136: if (! defined($current_problem->{'resource'})) {
137: $r->print('resource is undefined');
138: } else {
139: my $resource = $current_problem->{'resource'};
140: $r->print('<h1>'.$resource->compTitle.'</h1>');
141: $r->print('<h3>'.$resource->src.'</h3>');
142: $r->print('<h4>'.&Apache::lonstatistics::section_and_enrollment_description().'</h4>');
143: if ($env{'form.show_prob'} eq 'true') {
144: $r->print(&Apache::lonstathelpers::render_resource($resource));
145: }
146: $r->rflush();
147: if (@Students) {
148: my %Data = &Apache::lonstathelpers::get_problem_data
149: ($resource->src);
150: my $problem_data = $Data{$current_problem->{'part'}.
151: '.'.
152: $current_problem->{'respid'}};
153: if ($current_problem->{'resptype'} eq 'option') {
154: &OptionResponseAnalysis($r,$current_problem,
155: $problem_data,
156: \@Students);
157: } elsif ($current_problem->{'resptype'} eq 'radiobutton') {
158: &radio_response_analysis($r,$current_problem,
159: $problem_data,
160: \@Students);
161: } elsif ($current_problem->{'resptype'} eq 'numerical') {
162: &numerical_response_analysis($r,$current_problem,
163: $problem_data,\@Students);
164: } else {
165: $r->print('<h2>Analysis of '.$current_problem->{'resptype'}.' is not supported</h2>');
166: }
167: }
168: }
169: $r->print('<hr />');
170: } else {
171: my $submit_button = '<input type="submit" '.
172: 'name="ProblemAnalysis" value="'.
173: &mt('Analyze Problem').'" />';
174: $r->print($submit_button);
175: $r->print(' 'x5);
176: $r->print('<h3>'.&mt('Please select a problem to analyze').'</h3>');
177: $r->print(&Apache::lonstathelpers::problem_selector($problem_types,
178: $submit_button));
179: }
180: }
181:
182: #########################################################
183: #########################################################
184: ##
185: ## Numerical Response Routines
186: ##
187: #########################################################
188: #########################################################
189: sub numerical_response_analysis {
190: my ($r,$problem,$problem_analysis,$students) = @_;
191: my $c = $r->connection();
192: #
193: if ($env{'form.AnalyzeOver'} !~ /^(tries|time)$/) {
194: $r->print('Bad request');
195: }
196: #
197: my ($resource,$partid,$respid) = ($problem->{'resource'},
198: $problem->{'part'},
199: $problem->{'respid'});
200: # Gather student data
201: my $response_data = &Apache::loncoursedata::get_response_data
202: ([&Apache::lonstatistics::get_selected_sections()],
203: [&Apache::lonstatistics::get_selected_groups()],
204: $Apache::lonstatistics::enrollment_status,
205: $resource->symb,$respid);
206: #
207: $problem_analysis->{'answercomputed'} = 1;
208: if ($problem_analysis->{'answercomputed'}) {
209: my $answers =
210: &Apache::lonstathelpers::GetStudentAnswers($r,$problem,$students,
211: 'Statistics',
212: 'stats_status');
213: $r->print(&numerical_one_dimensional_plot($r,600,150,$answers));
214: }
215: #
216: if (ref($response_data) ne 'ARRAY') {
217: $r->print('<h2>'.
218: &mt('There is no submission data for this resource').
219: '</h2>');
220: return;
221: }
222: my $analysis_html = '<table>';
223: for (my $plot_num = 1;$plot_num<=$env{'form.NumPlots'};$plot_num++) {
224: my $restriction_function;
225: my $header_message;
226: my $stats_message;
227: my $post_message; # passed through &mt sooner rather than later
228: my $no_data_message;
229: my @extra_data;
230: if ($env{'form.AnalyzeOver'} eq 'tries') {
231: $restriction_function = sub {($_[0]->{'tries'} == $plot_num?1:0)};
232: $header_message = 'Attempt [_1]';
233: $stats_message =
234: '[_1] submissions, [_2] correct, [_3] incorrect';
235: $post_message = '';
236: $no_data_message = 'No data exists for attempt [_1]';
237: } else {
238: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
239: ('startdate_'.$plot_num);
240: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
241: ('enddate_'.$plot_num);
242: ($starttime,$endtime) = &ensure_start_end_times
243: ($starttime,$endtime,
244: &get_time_from_row($response_data->[0]),
245: &get_time_from_row($response_data->[-1]),
246: $plot_num);
247: $header_message = 'Data from [_2] to [_3]';
248: $extra_data[0] = &Apache::lonlocal::locallocaltime($starttime);
249: $extra_data[1] = &Apache::lonlocal::locallocaltime($endtime);
250: #
251: $stats_message =
252: '[_1] submissions from [_4] students, [_2] correct, [_3] incorrect';
253: #
254: $post_message =
255: &mt('Start time: [_1]',
256: &Apache::lonhtmlcommon::date_setter
257: ('Statistics','startdate_'.$plot_num,$starttime)).
258: '<br />'.
259: &mt('End time: [_1]',
260: &Apache::lonhtmlcommon::date_setter
261: ('Statistics','enddate_'.$plot_num,$endtime));
262: $restriction_function =
263: sub {
264: my $t = $_[0]->{'timestamp'};
265: if ($t >= $starttime && $t < $endtime) {
266: return 1;
267: } else {
268: return 0;
269: }
270: };
271: $no_data_message = 'No data for [_2] to [_3]';
272: }
273: #
274: my ($correct,$answers) =
275: &numerical_determine_answers($r,$resource,$partid,
276: $respid,$students);
277: if ($c->aborted()) { return; };
278: #
279: my ($responses,$stats) =
280: &numerical_classify_responses($response_data,$correct,
281: $restriction_function);
282: if ($stats->{'submission_count'} == 0) {
283: $analysis_html.=
284: '<tr><td colspan="2"><font size="+1"><b>'.
285: &mt($no_data_message,$plot_num,@extra_data).
286: '</b></font></td></tr>';
287: } else {
288: $analysis_html.=
289: '<tr><td colspan="2" align="center"><font size="+1"><b>'.
290: &mt($header_message,$plot_num,@extra_data).
291: '</b></font></td></tr>'.
292: '<tr><td colspan="2" align="center">'.
293: &mt($stats_message,
294: $stats->{'submission_count'},
295: $stats->{'correct_count'},
296: $stats->{'incorrect_count'},
297: $stats->{'students'},
298: @extra_data).
299: '</td></tr>'.
300: '<tr>'.'<td valign="top" align="center">'.
301: &numerical_plot_percent($r,$responses,$stats).'</td>'.
302: '<td align="center" valign="top">'.
303: &numerical_plot_differences($r,$responses,$stats).'</td>'.
304: '</tr>';
305: }
306: if ($post_message ne '') {
307: $analysis_html .=
308: '<tr><td colspan="2">'.$post_message.'</td></tr>';
309: }
310: }
311: $analysis_html.='</table>';
312: $r->print($analysis_html);
313: #
314: return;
315: }
316:
317: sub numerical_plot_percent {
318: my ($r,$responses,$stats) = @_;
319: #
320: my $total = $stats->{'submission_count'};
321: return '' if ($total == 0);
322: my $max_bins = 50;
323: my $lowest_percent = $stats->{'min_percent'};
324: my $highest_percent = $stats->{'max_percent'};
325: my $percent_spread = $highest_percent - $lowest_percent;
326: foreach (qw/20 30 40 50 100 200/) {
327: if ($percent_spread < $_) {
328: $highest_percent =$_/2;
329: last;
330: }
331: }
332: $percent_spread = $highest_percent - $lowest_percent;
333: my $bin_size = 1;
334: foreach (qw/0.01 0.05 0.1 0.5 1 2 5 10 20 25 50 100/) {
335: if ($lowest_percent/2 < $_){
336: $bin_size = $_;
337: if ( ($percent_spread/$bin_size) < $max_bins ) {
338: last;
339: }
340: }
341: }
342: my @bins;
343: for (my $bin = -$highest_percent;$bin<0;$bin+=$bin_size) {
344: push (@bins,$bin);
345: }
346: for (my $bin = 0; $bin<$highest_percent;$bin+=$bin_size) {
347: push (@bins,$bin);
348: }
349: push(@bins,$highest_percent);
350: #
351: my @correct;
352: my @incorrect;
353: my @count;
354: while (my ($ans,$submissions) = each(%$responses)) {
355: while (my ($submission,$counts) = each(%$submissions)) {
356: my ($correct_count,$incorrect_count) = @$counts;
357: my $scaled_value =
358: ($ans) ? 100*($submission-$ans)/abs($ans)
359: : 0;
360: if ($scaled_value < $bins[0]) {
361: $bins[0]=$scaled_value -1;
362: }
363: my $bin;
364: for ($bin=0;$bin<$#bins;$bin++) {
365: last if ($bins[$bin]>$scaled_value);
366: }
367: $correct[$bin-1]+=$correct_count;
368: $incorrect[$bin-1]+=$incorrect_count;
369: $count[$bin-1]+=$correct_count+$incorrect_count;
370: }
371: }
372: #
373: my @plot_correct = @correct;
374: my @plot_incorrect = @incorrect;
375: my $max;
376: for (my $i=0;$i<$#bins;$i++) {
377: $plot_correct[$i] *= 100/$total;
378: $plot_incorrect[$i] *= 100/$total;
379: if (! defined($max) ||
380: $max < $plot_correct[$i]+$plot_incorrect[$i] ) {
381: $max = $plot_correct[$i]+$plot_incorrect[$i];
382: }
383: }
384: foreach (qw/1 5 10 15 20 25 30 40 50 75 100/) {
385: if ($max <$_) { $max = $_; last; }
386: }
387: #
388: my $title = &mt('Percent Difference');
389: my @labels = (1..scalar(@bins)-1);
390: my $graph = &Apache::loncommon::DrawBarGraph
391: ($title,'Percent Difference from Correct','Percent of Answers',
392: $max,['#33FF00','#FF3300'],\@labels,\@plot_correct,\@plot_incorrect,
393: {xskip=>1});
394: #
395: my $table = $graph.$/.
396: &numerical_bin_table(\@bins,\@labels,\@incorrect,\@correct,\@count).$/;
397: return $table;
398: }
399:
400: sub numerical_plot_differences {
401: my ($r,$responses,$stats) = @_;
402: #
403: my $total = $stats->{'submission_count'};
404: return '' if ($total == 0);
405: my $max_bins = 21;
406: my $min_bin_size = $stats->{'min_abs'};
407: my $low_bin = $stats->{'lowest_ans'}-$stats->{'max_bin_size'};
408: my $high_bin = $stats->{'highest_ans'}+$stats->{'max_bin_size'};
409: if ($high_bin > 0 && $low_bin > -$high_bin) {
410: $low_bin = -$high_bin;
411: } elsif ($low_bin < 0 && $high_bin < -$low_bin) {
412: $high_bin = -$low_bin;
413: }
414: if ($high_bin == $low_bin) {
415: $high_bin+=1;
416: $low_bin-=1;
417: }
418: if (!$min_bin_size ||
419: ($high_bin -$low_bin)/$min_bin_size * 2 > $max_bins) {
420: $min_bin_size = abs($high_bin - $low_bin) / $max_bins * 2;
421: }
422: my @bins;
423: for (my $num = $low_bin;$num <= $high_bin;$num+=($min_bin_size/2)) {
424: push(@bins,$num);
425: }
426: #
427: my @correct;
428: my @incorrect;
429: my @count;
430: while (my ($ans,$submissions) = each(%$responses)) {
431: while (my ($submission,$counts) = each(%$submissions)) {
432: my ($correct_count,$incorrect_count) = @$counts;
433: my $scaled_value = $submission-$ans;
434: if ($scaled_value < $bins[0]) {
435: $bins[0]=$scaled_value-1;
436: }
437: my $bin=0;
438: for ($bin=0;$bin<$#bins;$bin++) {
439: last if ($bins[$bin]>$scaled_value);
440: }
441: $correct[$bin-1]+=$correct_count;
442: $incorrect[$bin-1]+=$incorrect_count;
443: $count[$bin-1]+=$correct_count+$incorrect_count;
444: }
445: }
446: my @plot_correct = @correct;
447: my @plot_incorrect = @incorrect;
448: my $max;
449: for (my $i=0;$i<=$#bins;$i++) {
450: $plot_correct[$i] *= 100/$total;
451: $plot_incorrect[$i] *= 100/$total;
452: if (! defined($max) ||
453: $max < $plot_correct[$i]+$plot_incorrect[$i] ) {
454: $max = $plot_correct[$i]+$plot_incorrect[$i];
455: }
456: }
457: foreach (qw/1 5 10 15 20 25 30 40 50 75 100/) {
458: if ($max <$_) { $max = $_; last; }
459: }
460: #
461: my $title = &mt('Difference between submission and correct');
462: my @labels = (1..scalar(@bins)-1);
463: my $graph = &Apache::loncommon::DrawBarGraph
464: ($title,'Difference from Correct','Percent of Answers',
465: $max,['#33FF00','#FF3300'],\@labels,\@plot_correct,\@plot_incorrect,
466: {xskip=>1});
467: #
468: my $table = $graph.$/.
469: &numerical_bin_table(\@bins,\@labels,\@incorrect,\@correct,\@count).$/;
470: return $table;
471: }
472:
473: sub numerical_classify_responses {
474: my ($full_row_data,$correct,$function) = @_;
475: my %submission_data;
476: my %students;
477: my %stats;
478: my $max=0;
479: foreach my $row (@$full_row_data) {
480: my %subm = &hashify_attempt($row);
481: if (ref($correct) eq 'HASH') {
482: my $s_correct = $correct->{$subm{'student'}};
483: $subm{'correct'} = $s_correct->{'answer'};
484: foreach my $item ('unit','ans_low','ans_high') {
485: $subm{$item} = $s_correct->{$item};
486: }
487: } else { # This probably never happens....
488: $subm{'correct'} = $correct->{'answer'};
489: $subm{'unit'} = $correct->{'unit'};
490: }
491: #
492: my $abs_low =abs($subm{'correct'}-$subm{'ans_low'});
493: my $abs_high=abs($subm{'correct'}-$subm{'ans_high'});
494: if (! defined($stats{'min_abs'}) ||
495: $stats{'min_abs'} > $abs_low) {
496: $stats{'min_abs'} = $abs_low;
497: }
498: if ($stats{'min_abs'} > $abs_high) {
499: $stats{'min_abs'} = $abs_high;
500: }
501: if (! defined($stats{'max_abs'}) ||
502: $stats{'max_abs'} < $abs_low) {
503: $stats{'max_abs'} = $abs_low;
504: }
505: if ($stats{'max_abs'} < $abs_high) {
506: $stats{'max_abs'} = $abs_high;
507: }
508: my $low_percent;
509: my $high_percent;
510: if (defined($subm{'correct'}) && $subm{'correct'} != 0) {
511: $low_percent = 100 * abs($abs_low / $subm{'correct'});
512: $high_percent = 100 * abs($abs_high / $subm{'correct'});
513: }
514: if (! defined($stats{'min_percent'}) ||
515: $stats{'min_percent'} > $low_percent) {
516: $stats{'min_percent'} = $low_percent;
517: }
518: if ($stats{'min_percent'} > $high_percent) {
519: $stats{'min_percent'} = $high_percent;
520: }
521: if (! defined($stats{'max_percent'}) ||
522: $stats{'max_percent'} < $low_percent) {
523: $stats{'max_percent'} = $low_percent;
524: }
525: if ($stats{'max_percent'} < $high_percent) {
526: $stats{'max_percent'} = $high_percent;
527: }
528: if (! defined($stats{'lowest_ans'}) ||
529: $stats{'lowest_ans'} > $subm{'correct'}) {
530: $stats{'lowest_ans'} = $subm{'correct'};
531: }
532: if (! defined($stats{'highest_ans'}) ||
533: $stats{'highest_ans'} < $subm{'correct'}) {
534: $stats{'highest_ans'} = $subm{'correct'};
535: }
536: #
537: $subm{'submission'} =~ s/=\d+\s*$//;
538: if (&$function(\%subm)) {
539: my $scaled = '1';
540: my ($sname,$sdom) = split(':',$subm{'student'});
541: my ($myunit,$mysub) = ($subm{'unit'},$subm{'submission'});
542: my $result =
543: &capa::caparesponse_get_real_response($myunit,
544: $mysub,
545: \$scaled);
546: # &Apache::lonnet::logthis('scaled = '.$scaled.' result ='.$result);
547: next if (! defined($scaled));
548: # next if ($result ne '6');
549: my $submission = $scaled;
550: $students{$subm{'student'}}++;
551: $stats{'submission_count'}++;
552: if (&numerical_submission_is_correct($subm{'award'})) {
553: $stats{'correct_count'}++;
554: $submission_data{$subm{'correct'}}->{$submission}->[0]++;
555: } elsif (&numerical_submission_is_incorrect($subm{'award'})) {
556: $stats{'incorrect_count'}++;
557: $submission_data{$subm{'correct'}}->{$submission}->[1]++;
558: }
559: }
560: }
561: $stats{'correct_count'} |= 0;
562: $stats{'incorrect_count'} |= 0;
563: $stats{'students'}=scalar(keys(%students));
564: return (\%submission_data,\%stats);
565: }
566:
567: sub numerical_submission_is_correct {
568: my ($award) = @_;
569: if ($award =~ /^(APPROX_ANS|EXACT_ANS)$/) {
570: return 1;
571: } else {
572: return 0;
573: }
574: }
575:
576: sub numerical_submission_is_incorrect {
577: my ($award) = @_;
578: if ($award =~ /^(INCORRECT)$/) {
579: return 1;
580: } else {
581: return 0;
582: }
583: }
584:
585: sub numerical_bin_table {
586: my ($bins,$labels,$incorrect,$correct,$count)=@_;
587: my $table =
588: '<table><tr><th>'.&mt('Bar').'</th>'.
589: '<th colspan="3">'.&mt('Range').'</th>'.
590: '<th>'.&mt('Incorrect').'</th>'.
591: '<th>'.&mt('Correct').'</th>'.
592: '<th>'.&mt('Count').'</th>'.
593: '</tr>'.$/;
594: for (my $i=0;$i<scalar(@{$bins}-1);$i++) {
595: my $lownum = $bins->[$i];
596: if ($i == 0) { $lownum = '-∞'; }
597: my $highnum = $bins->[$i+1];
598: if ($i == scalar(@{$bins})-2) { $highnum = '∞'; }
599: $table .=
600: '<tr>'.
601: '<td>'.$labels->[$i].'</td>'.
602: '<td align="right">'.$lownum.'</td>'.
603: '<td> - </td>'.
604: '<td align="right">'.$highnum.'</td>'.
605: '<td align="right">'.$incorrect->[$i].'</td>'.
606: '<td align="right">'.$correct->[$i].'</td>'.
607: '<td align="right">'.$count->[$i].'</td>'.
608: '</tr>'.$/;
609: }
610: $table.= '</table>';
611: return $table;
612: }
613:
614: sub numerical_determine_answers {
615: my ($r,$resource,$partid,$respid,$students)=@_;
616: my $c = $r->connection();
617: #
618: my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin
619: ($r,'Student Answer Compilation Status',
620: 'Student Answer Compilation Progress', scalar(@$students),
621: 'inline',undef,'Statistics','stats_status');
622: #
623: # Read in the cache (if it exists) before we start timing things.
624: &Apache::lonstathelpers::ensure_proper_cache($resource->{'symb'});
625: #
626: my $correct;
627: my %answers;
628: foreach my $student (@$students) {
629: last if ($c->aborted());
630: my $sname = $student->{'username'};
631: my $sdom = $student->{'domain'};
632: # analyze problem
633: my $analysis =
634: &Apache::lonstathelpers::analyze_problem_as_student($resource,
635: $sname,
636: $sdom);
637: # make the key
638: my $key = $partid.'.'.$respid;
639: # pick one of the possible answers
640: my $which = 'INTERNAL';
641: if (!exists($analysis->{$key}{$which})) {
642: $which = (sort(keys(%{ $analysis->{$key} })))[0];
643: }
644: foreach my $item ('answer','unit','ans_high','ans_low') {
645: if (ref($analysis->{$key.'.'.$item}) eq 'ARRAY') {
646: $correct->{$sname.':'.$sdom}->{$item} =
647: $analysis->{$key.'.'.$item}[0];
648: } else {
649: $correct->{$sname.':'.$sdom}->{$item} =
650: $analysis->{$key.'.'.$item}{$which}[0][0];
651: }
652: }
653: $answers{$correct->{$sname.':'.$sdom}{'answer'}}++;
654: &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
655: &mt('last student'));
656: }
657: &Apache::lonstathelpers::write_analysis_cache();
658: &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
659: return ($correct,\%answers);
660: }
661:
662: #
663: # Inputs: $r, $width, $height, $data
664: # $n = number of students
665: # $data = hashref of $answer => $frequency pairs
666: sub numerical_one_dimensional_plot {
667: my ($r,$width,$height,$data)=@_;
668: #
669: # Compute data -> image scaling factors
670: my $max_y = 0;
671: my $min_x = undef;
672: my $max_x = undef;
673: my $n = 0;
674: while (my ($answer,$count) = each(%$data)) {
675: $n+=$count;
676: $max_y = $count if ($max_y < $count);
677: if (! defined($min_x) || $answer < $min_x) {
678: $min_x = $answer;
679: }
680: if (! defined($max_x) || $answer > $max_x) {
681: $max_x = $answer;
682: }
683: }
684: #
685: my $min_max_difference = $max_x - $min_x;
686: if (! defined($min_max_difference) || $min_max_difference == 0) {
687: $min_max_difference = 1;
688: }
689: my $h_scale = ($width-10)/$min_max_difference;
690: #
691: my $ticscale = 5;
692: if ($max_y * $ticscale > $height/2) {
693: $ticscale = int($height/2/$max_y);
694: $ticscale = 1 if ($ticscale < 1);
695: }
696: #
697: # Create the plot
698: my $plot =
699: qq{<drawimage width="$width" height="$height" bgcolor="transparent" >};
700: while (my ($answer,$count) = each(%$data)) {
701: my $xloc = 5+$h_scale*($answer - $min_x);
702: my $top = $height/2-$count*$ticscale;
703: my $bottom = $height/2+$count*$ticscale;
704: $plot .= &line($xloc,$top,$xloc,$bottom,'888888',1);
705: }
706: #
707: # Put the scale on last to ensure it is on top of the data.
708: if ($min_x < 0 && $max_x > 0) {
709: my $circle_x = 5+$h_scale*abs($min_x); # '0' in data coordinates
710: my $r = 4;
711: $plot .= &line(5,$height/2,$circle_x-$r,$height/2,'000000',1);
712: $plot .= &circle($circle_x,$height/2,$r+1,'000000');
713: $plot .= &line($circle_x+$r,$height/2,$width-5,$height/2,'000000',1);
714: } else {
715: $plot .= &line(5,$height/2,$width-5,$height/2,'000000',1);
716: }
717: $plot .= '</drawimage>';
718: my $plotresult = &Apache::lonxml::xmlparse($r,'web',$plot);
719: my $result = '<table>'.
720: '<tr><td colspan="3" align="center">'.
721: '<font size="+2">'.&mt('Distribution of correct answers').'</font>'.
722: '<br />'.&mt('[_1] students, [_2] distinct correct answers',
723: $n,scalar(keys(%$data))).
724: '<br />'.&mt('Maximum number of coinciding values: [_1]',$max_y).
725: '</td></tr>'.
726: '<tr>'.
727: '<td valign="center">'.$min_x.'</td>'.
728: '<td>'.$plotresult.'</td>'.
729: '<td valign="center">'.$max_x.'</td>'.
730: '</tr>'.
731: '</table>';
732: return $result;
733: }
734:
735: ##
736: ## Helper subroutines for <drawimage>.
737: ## These should probably go somewhere more suitable soon.
738: sub line {
739: my ($x1,$y1,$x2,$y2,$color,$thickness) = @_;
740: return qq{<line x1="$x1" y1="$y1" x2="$x2" y2="$y2" color="$color" thickness="$thickness" />};
741: }
742:
743: sub text {
744: my ($x,$y,$color,$text,$font,$direction) = @_;
745: if (! defined($font) || $font !~ /^(tiny|small|medium|large|giant)$/) {
746: $font = 'medium';
747: }
748: if (! defined($direction) || $direction ne 'vertical') {
749: $direction = '';
750: }
751: return qq{<text x="$x" y="$y" color="$color" font="$font" direction="$direction" >$text</text>};
752: }
753:
754: sub rectangle {
755: my ($x1,$y1,$x2,$y2,$color,$thickness,$filled) = @_;
756: return qq{<rectangle x1="$x1" y1="$y1" x2="$x2" y2="$y2" color="$color" thickness="$thickness" filled="$filled" />};
757: }
758:
759: sub arc {
760: my ($x,$y,$width,$height,$start,$end,$color,$thickness,$filled)=@_;
761: return qq{<arc x="$x" y="$y" width="$width" height="$height" start="$start" end="$end" color="$color" thickness="$thickness" filled="$filled" />};
762: }
763:
764: sub circle {
765: my ($x,$y,$radius,$color,$thickness,$filled)=@_;
766: return &arc($x,$y,$radius,$radius,0,360,$color,$thickness,$filled);
767: }
768:
769: #########################################################
770: #########################################################
771: ##
772: ## Radio Response Routines
773: ##
774: #########################################################
775: #########################################################
776: sub radio_response_analysis {
777: my ($r,$problem,$problem_analysis,$students) = @_;
778: #
779: if ($env{'form.AnalyzeOver'} !~ /^(tries|time)$/) {
780: $r->print('Bad request');
781: }
782: #
783: my ($resource,$partid,$respid) = ($problem->{'resource'},
784: $problem->{'part'},
785: $problem->{'respid'});
786: #
787: my $analysis_html;
788: my $foildata = $problem_analysis->{'_Foils'};
789: my ($table,$foils,$concepts) = &build_foil_index($problem_analysis);
790: if (! defined($concepts)) {
791: $concepts = [];
792: }
793: #
794: my %true_foils;
795: my $num_true = 0;
796: if (! $problem_analysis->{'answercomputed'}) {
797: foreach my $foil (@$foils) {
798: if ($foildata->{$foil}->{'value'} eq 'true') {
799: $true_foils{$foil}++;
800: }
801: }
802: $num_true = scalar(keys(%true_foils));
803: }
804: #
805: $analysis_html .= $table;
806: # Gather student data
807: my $response_data = &Apache::loncoursedata::get_response_data
808: ([&Apache::lonstatistics::get_selected_sections()],
809: [&Apache::lonstatistics::get_selected_groups()],
810: $Apache::lonstatistics::enrollment_status,
811: $resource->symb,$respid);
812: my $correct; # either a hash reference or a scalar
813: if ($problem_analysis->{'answercomputed'} || scalar(@$concepts) > 1) {
814: # This takes a while for large classes...
815: &Apache::lonstathelpers::GetStudentAnswers($r,$problem,$students,
816: 'Statistics',
817: 'stats_status');
818: foreach my $student (@$students) {
819: my ($idx,@remainder) = split('&',$student->{'answer'});
820: my ($answer) = ($remainder[$idx]=~/^(.*)=([^=]*)$/);
821: $correct->{$student->{'username'}.':'.$student->{'domain'}}=
822: &unescape($answer);
823: }
824: } else {
825: foreach my $foil (keys(%$foildata)) {
826: if ($foildata->{$foil}->{'value'} eq 'true') {
827: $correct = $foildata->{$foil}->{'name'};
828: }
829: }
830: }
831: #
832: if (! defined($response_data) || ref($response_data) ne 'ARRAY' ) {
833: $analysis_html = '<h2>'.
834: &mt('There is no submission data for this resource').
835: '</h2>';
836: $r->print($analysis_html);
837: return;
838: }
839: #
840: $analysis_html.='<table>';
841: for (my $plot_num = 1;$plot_num<=$env{'form.NumPlots'};$plot_num++) {
842: # classify data ->correct foil -> selected foil
843: my ($restriction_function,
844: $correct_foil_title,$incorrect_foil_title,
845: $pre_graph_text,$post_graph_text,
846: $no_data_text,@extra_data);
847: if ($env{'form.AnalyzeOver'} eq 'tries') {
848: $restriction_function = sub {($_[0]->{'tries'} == $plot_num?1:0)};
849: $correct_foil_title = 'Attempt '.$plot_num;
850: $incorrect_foil_title = 'Attempt '.$plot_num;
851: $pre_graph_text =
852: 'Attempt [_1], [_2] submissions, [_3] correct, [_4] incorrect';
853: $post_graph_text = '';
854: $no_data_text = 'No data exists for attempt [_1]';
855: } elsif ($env{'form.AnalyzeOver'} eq 'time') {
856: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
857: ('startdate_'.$plot_num);
858: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
859: ('enddate_'.$plot_num);
860: ($starttime,$endtime) = &ensure_start_end_times
861: ($starttime,$endtime,
862: &get_time_from_row($response_data->[0]),
863: &get_time_from_row($response_data->[-1]),
864: $plot_num);
865: $pre_graph_text =
866: 'Data from [_6] to [_7]<br /> [_2] submissions from [_5] students, [_3] correct, [_4] incorrect';
867: $extra_data[0] = &Apache::lonlocal::locallocaltime($starttime);
868: $extra_data[1] = &Apache::lonlocal::locallocaltime($endtime);
869: #
870: $post_graph_text =
871: &mt('Start time: [_1]',
872: &Apache::lonhtmlcommon::date_setter
873: ('Statistics','startdate_'.$plot_num,$starttime)).
874: '<br />'.
875: &mt('End time: [_1]',
876: &Apache::lonhtmlcommon::date_setter
877: ('Statistics','enddate_'.$plot_num,$endtime));
878: $restriction_function =
879: sub {
880: my $t = $_[0]->{'timestamp'};
881: if ($t >= $starttime && $t < $endtime) {
882: return 1;
883: } else {
884: return 0;
885: }
886: };
887: $no_data_text = 'No data for [_5] to [_6]';
888: }
889: my $foil_choice_data =
890: &classify_response_data($response_data,$correct,
891: $restriction_function);
892: # &Apache::lonstathelpers::log_hash_ref($foil_choice_data);
893: my $answers;
894: if (ref($correct)) {
895: my %tmp;
896: foreach my $foil (values(%$correct)) {
897: $tmp{$foil}++;
898: }
899: $answers = [keys(%tmp)];
900: } else {
901: $answers = [$correct];
902: }
903: # Concept Plot
904: my $concept_plot = '';
905: if (scalar(@$concepts) > 1) {
906: $concept_plot = &RR_concept_plot($concepts,$foil_choice_data,
907: 'Correct Concepts');
908: }
909: # % Choosing plot
910: my $choice_plot = &RR_create_percent_selected_plot
911: ($concepts,$foils,$foil_choice_data,$correct_foil_title);
912: # for each correct foil, how did they mark it? (stacked bar graph)
913: my ($stacked_plot,$count_by_foil);
914: if ($problem_analysis->{'answercomputed'} || $num_true > 1) {
915: ($stacked_plot,$count_by_foil) =
916: &RR_create_stacked_selection_plot($foils,$foil_choice_data,
917: $incorrect_foil_title,
918: \%true_foils);
919: }
920: #
921: if ($concept_plot ne '' ||
922: $choice_plot ne '' ||
923: $stacked_plot ne '') {
924: my $correct = $foil_choice_data->{'_correct'};
925: $correct |= 0;
926: my $incorrect = $foil_choice_data->{'_count'}-$correct;
927: $analysis_html.= '<tr><td colspan="4" align="center">'.
928: '<font size="+1">'.
929: &mt($pre_graph_text,
930: $plot_num,$foil_choice_data->{'_count'},
931: $correct,
932: $incorrect,
933: $foil_choice_data->{'_students'},
934: @extra_data).
935: '</td></tr>'.$/;
936: $analysis_html.=
937: '<tr>'.
938: '<td>'.$concept_plot.'</td>'.
939: '<td>'.$choice_plot.'</td>';
940: if ($stacked_plot ne '') {
941: $analysis_html .=
942: '<td>'.$stacked_plot.'</td>'.
943: '<td>'.&build_foil_key($foils,$count_by_foil).'</td>';
944: } else {
945: $analysis_html .= ('<td></td>'x2);
946: }
947: $analysis_html.='</tr>'.$/;
948: if (defined($post_graph_text)) {
949: $analysis_html.= '<tr><td colspan="4" align="center">'.
950: $post_graph_text.'</td></tr>'.$/;
951: }
952: } elsif ($no_data_text ne '') {
953: $analysis_html.='<tr><td colspan="4" align="center">'.
954: &mt($no_data_text,
955: $plot_num,$foil_choice_data->{'_count'},
956: $correct,
957: $foil_choice_data->{'_count'}-$correct,
958: @extra_data);
959: if (defined($post_graph_text)) {
960: $analysis_html.='<br />'.$post_graph_text;
961: }
962: $analysis_html.='</td></tr>'.$/;
963: }
964: } # end of loop for plots
965: $analysis_html.='</table>';
966: $r->print($analysis_html);
967: }
968:
969: sub ensure_start_end_times {
970: my ($start,$end,$first,$last,$plot_num) = @_;
971: if (! defined($start) || ! defined($end)) {
972: my $sec_in_day = 86400;
973: my ($sday,$smon,$syear) =
974: (localtime($last - $sec_in_day*($plot_num-1)))[3..5];
975: $start = &Time::Local::timelocal(0,0,0,$sday,$smon,$syear);
976: $end = $start + $sec_in_day;
977: if ($plot_num == $env{'form.NumPlots'}) {
978: $start = $first;
979: }
980: }
981: return ($start,$end);
982: }
983:
984: sub RR_concept_plot {
985: my ($concepts,$foil_data,$title) = @_;
986: #
987: my %correct_by_concept;
988: my %incorrect_by_concept;
989: my %true;
990: foreach my $concept (@$concepts) {
991: foreach my $foil (@{$concept->{'foils'}}) {
992: next if (! exists($foil_data->{$foil}));
993: foreach my $choice (keys(%{$foil_data->{$foil}})) {
994: if ($choice eq $foil) {
995: $correct_by_concept{$concept->{'name'}} +=
996: $foil_data->{$foil}->{$choice};
997: } else {
998: $incorrect_by_concept{$concept->{'name'}} +=
999: $foil_data->{$foil}->{$choice};
1000: }
1001: }
1002: }
1003: }
1004: #
1005: # need arrays for incorrect and correct because we want to use different
1006: # colors for them
1007: my @correct;
1008: #
1009: my $total =0;
1010: for (my $i=0;$i<scalar(@$concepts);$i++) {
1011: my $concept = $concepts->[$i];
1012: $correct[$i] = $correct_by_concept{$concept->{'name'}};
1013: $total += $correct_by_concept{$concept->{'name'}}+
1014: $incorrect_by_concept{$concept->{'name'}};
1015: }
1016: if ($total == 0) { return ''; };
1017: for (my $i=0;$i<=$#correct;$i++) {
1018: $correct[$i] = sprintf('%0f',$correct[$i]/$total*100);
1019: }
1020: my $xlabel = 'concept';
1021: my $plot= &Apache::loncommon::DrawBarGraph($title,
1022: $xlabel,
1023: 'Percent Choosing',
1024: 100,
1025: ['#33ff00','#ff3300'],
1026: undef,
1027: \@correct);
1028: return $plot;
1029: }
1030:
1031: sub RR_create_percent_selected_plot {
1032: my ($concepts,$foils,$foil_data,$title) = @_;
1033: #
1034: if ($foil_data->{'_count'} == 0) { return ''; };
1035: my %correct_selections;
1036: my %incorrect_selections;
1037: foreach my $foil (@$foils) {
1038: # foil_data has format $foil_data->{true_foil}->{selected foil}=count
1039: next if (! exists($foil_data->{$foil}));
1040: while (my ($f,$count)= each(%{$foil_data->{$foil}})) {
1041: if ($f eq $foil) {
1042: $correct_selections{$foil} += $count;
1043: } else {
1044: $incorrect_selections{$f} += $count;
1045: }
1046: }
1047: }
1048: #
1049: # need arrays for incorrect and correct because we want to use different
1050: # colors for them
1051: my @correct;
1052: my @incorrect;
1053: #
1054: my $total = $foil_data->{'_count'};
1055: for (my $i=0;$i<scalar(@$foils);$i++) {
1056: my $foil = $foils->[$i];
1057: $correct[$i] = $correct_selections{$foil};
1058: $incorrect[$i] = $incorrect_selections{$foil};
1059: }
1060: for (my $i=0;$i<=$#correct;$i++) {
1061: $correct[$i] = sprintf('%2f',$correct[$i]/$total*100);
1062: }
1063: for (my $i=0;$i<=$#incorrect;$i++) {
1064: $incorrect[$i] = sprintf('%2f',$incorrect[$i]/$total*100);
1065: }
1066: #
1067: # Put a blank in the data sets between concepts, if there are concepts
1068: my @labels;
1069: if (defined($concepts) && scalar(@$concepts) > 1) {
1070: my @new_correct;
1071: my @new_incorrect;
1072: my $foil_count = 0;
1073: foreach my $concept (@$concepts) {
1074: foreach (@{$concept->{'foils'}}) {
1075: push(@new_correct, $correct[$foil_count]);
1076: push(@new_incorrect,$incorrect[$foil_count]);
1077: push(@labels,++$foil_count);
1078: }
1079: push(@new_correct,'');
1080: push(@new_incorrect,'');
1081: push(@labels,'');
1082: }
1083: @correct = @new_correct;
1084: @incorrect = @new_incorrect;
1085: } else {
1086: @labels = (1 .. scalar(@correct));
1087: }
1088: #
1089: my $xlabel = 'foil chosen';
1090: my $plot= &Apache::loncommon::DrawBarGraph($title,
1091: $xlabel,
1092: 'Percent Choosing',
1093: 100,
1094: ['#33ff00','#ff3300'],
1095: \@labels,
1096: \@correct,
1097: \@incorrect);
1098: return $plot;
1099: }
1100:
1101: sub RR_create_stacked_selection_plot {
1102: my ($foils,$foil_data,$title,$true_foils)=@_;
1103: #
1104: my @dataset; # array of array refs - multicolor rows $datasets[row]->[col]
1105: my @labels;
1106: my $count;
1107: my %column; # maps foil name to column in @datasets
1108: for (my $i=0;$i<scalar(@$foils);$i++) {
1109: my $foil = $foils->[$i];
1110: if (defined($true_foils) && scalar(keys(%$true_foils)) > 0 ) {
1111: next if (! $true_foils->{$foil} );
1112: push(@labels,$i+1);
1113: } else {
1114: next if (! exists($foil_data->{$foil}));
1115: push(@labels,$i+1);
1116: }
1117: next if (! exists($foil_data->{$foils->[$i]}));
1118: $column{$foil}= $count++;
1119: for (my $j=0;$j<scalar(@$foils);$j++) {
1120: my $value = 0;
1121: if ($i != $j ) {
1122: $value += $foil_data->{$foil}->{$foils->[$j]};
1123: }
1124: $dataset[$j]->[$column{$foil}]=$value;
1125: }
1126: }
1127: #
1128: return '' if (! scalar(keys(%column)));
1129: #
1130: my $grand_total = 0;
1131: my %count_per_foil;
1132: while (my ($foil,$bar) = each (%column)) {
1133: my $bar_total = 0;
1134: for (my $j=0;$j<scalar(@dataset);$j++) {
1135: $bar_total += $dataset[$j]->[$bar];
1136: }
1137: next if ($bar_total == 0);
1138: for (my $j=0;$j<scalar(@dataset);$j++) {
1139: $dataset[$j]->[$bar] =
1140: sprintf('%2f',$dataset[$j]->[$bar]/$bar_total * 100);
1141: }
1142: $count_per_foil{$foil}=' ( '.$bar_total.' )';
1143: $grand_total += $bar_total;
1144: }
1145: if ($grand_total == 0) {
1146: return ('',undef);
1147: }
1148: my @empty_row = ();
1149: foreach (@{$dataset[0]}) {
1150: push(@empty_row,0);
1151: }
1152: #
1153: my $graph = &Apache::loncommon::DrawBarGraph
1154: ($title,'Correct Foil','foils chosen Incorrectly',
1155: 100,$plotcolors,\@labels,\@empty_row,@dataset);
1156: return ($graph,\%count_per_foil);
1157: }
1158:
1159:
1160: #########################################################
1161: #########################################################
1162: ##
1163: ## Misc routines
1164: ##
1165: #########################################################
1166: #########################################################
1167:
1168: # if $correct is a hash ref, it is assumed to be indexed by student names.
1169: # the values are assumed to be hash refs with a key of 'answer'.
1170: sub classify_response_data {
1171: my ($full_row_data,$correct,$function) = @_;
1172: my %submission_data;
1173: my %students;
1174: my $max=0;
1175: foreach my $row (@$full_row_data) {
1176: my %subm = &hashify_attempt($row);
1177: if (ref($correct) eq 'HASH') {
1178: $subm{'correct'} = $correct->{$subm{'student'}};
1179: } else {
1180: $subm{'correct'} = $correct;
1181: }
1182: $subm{'submission'} =~ s/=\d+\s*$//;
1183: if (&$function(\%subm)) {
1184: $students{$subm{'student'}}++;
1185: $submission_data{'_count'}++;
1186: if (&submission_is_correct($subm{'award'})) {
1187: $submission_data{'_correct'}++;
1188: }
1189:
1190: if($max<++$submission_data{$subm{'correct'}}->{$subm{'submission'}}) {
1191: $max=$submission_data{$subm{'correct'}}->{$subm{'submission'}};
1192: }
1193: }
1194: }
1195: $submission_data{'_max'} = $max;
1196: $submission_data{'_students'}=scalar(keys(%students));
1197: return \%submission_data;
1198: }
1199:
1200:
1201: #########################################################
1202: #########################################################
1203: ##
1204: ## Option Response Routines
1205: ##
1206: #########################################################
1207: #########################################################
1208: sub OptionResponseAnalysis {
1209: my ($r,$problem,$problem_data,$Students) = @_;
1210: my ($resource,$respid) = ($problem->{'resource'},
1211: $problem->{'respid'});
1212: # Note: part data is not needed.
1213: my $PerformanceData = &Apache::loncoursedata::get_response_data
1214: ([&Apache::lonstatistics::get_selected_sections()],
1215: [&Apache::lonstatistics::get_selected_groups()],
1216: $Apache::lonstatistics::enrollment_status,
1217: $resource->symb,$respid);
1218: if (! defined($PerformanceData) ||
1219: ref($PerformanceData) ne 'ARRAY' ) {
1220: $r->print('<h2>'.
1221: &mt('There is no student data for this problem.').
1222: '</h2>');
1223: } else {
1224: $r->rflush();
1225: if ($env{'form.AnalyzeOver'} eq 'tries') {
1226: my $analysis_html = &OR_tries_analysis($r,
1227: $PerformanceData,
1228: $problem_data);
1229: $r->print($analysis_html);
1230: $r->rflush();
1231: } elsif ($env{'form.AnalyzeOver'} eq 'time') {
1232: my $analysis_html = &OR_time_analysis($PerformanceData,
1233: $problem_data);
1234: $r->print($analysis_html);
1235: $r->rflush();
1236: } else {
1237: $r->print('<h2>'.
1238: &mt('The analysis you have selected is '.
1239: 'not supported at this time').
1240: '</h2>');
1241: }
1242: }
1243: }
1244:
1245: #########################################################
1246: #
1247: # Option Response: tries Analysis
1248: #
1249: #########################################################
1250: sub OR_tries_analysis {
1251: my ($r,$PerformanceData,$ORdata) = @_;
1252: my $mintries = 1;
1253: my $maxtries = $env{'form.NumPlots'};
1254: my ($table,$Foils,$Concepts) = &build_foil_index($ORdata);
1255: if (! defined($Concepts)) {
1256: $Concepts = [];
1257: }
1258: my %response_data = &OR_analyze_by_tries($r,$PerformanceData,
1259: $mintries,$maxtries);
1260: my $analysis = '';
1261: #
1262: # Compute the data necessary to make the plots
1263: my @foil_plot;
1264: my @concept_data;
1265: for (my $j=0;$j<=scalar(@$Concepts);$j++) {
1266: my $concept = $Concepts->[$j];
1267: foreach my $foilid (@{$concept->{'foils'}}) {
1268: for (my $try=$mintries;$try<=$maxtries;$try++) {
1269: # concept analysis data
1270: $concept_data[$j]->[$try]->{'_correct'} +=
1271: $response_data{$foilid}->[$try]->{'_correct'};
1272: $concept_data[$j]->[$try]->{'_total'} +=
1273: $response_data{$foilid}->[$try]->{'_total'};
1274: #
1275: # foil analysis data
1276: if ($response_data{$foilid}->[$try]->{'_total'} == 0) {
1277: push(@{$foil_plot[$try]->{'_correct'}},0);
1278: } else {
1279: push(@{$foil_plot[$try]->{'_correct'}},
1280: 100*$response_data{$foilid}->[$try]->{'_correct'}/
1281: $response_data{$foilid}->[$try]->{'_total'});
1282: }
1283: foreach my $option (@{$ORdata->{'_Options'}}) {
1284: push(@{$foil_plot[$try]->{'_total'}},
1285: $response_data{$foilid}->[$try]->{'_total'});
1286: if ($response_data{$foilid}->[$try]->{'_total'} == 0) {
1287: push (@{$foil_plot[$try]->{$option}},0);
1288: } else {
1289: if ($response_data{$foilid}->[$try]->{'_total'} ==
1290: $response_data{$foilid}->[$try]->{'_correct'}) {
1291: push(@{$foil_plot[$try]->{$option}},0);
1292: } else {
1293: push (@{$foil_plot[$try]->{$option}},
1294: 100 *
1295: $response_data{$foilid}->[$try]->{$option} /
1296: ($response_data{$foilid}->[$try]->{'_total'}
1297: -
1298: $response_data{$foilid}->[$try]->{'_correct'}
1299: ));
1300: }
1301: }
1302: } # End of foreach my $option
1303: }
1304: } # End of foreach my $foilid
1305: } # End of concept loops
1306: #
1307: # Build a table for the plots
1308: my $analysis_html = "<br /><table>\n";
1309: my $optionkey = &build_option_index($ORdata);
1310: my $num_concepts = 1;
1311: if (defined($Concepts)) { $num_concepts = scalar(@$Concepts); }
1312: #
1313: for (my $try=$mintries;$try<=$maxtries;$try++) {
1314: if (! defined($response_data{'_total'}->[$try]) ||
1315: $response_data{'_total'}->[$try] == 0) {
1316: if ($try > 1) {
1317: $analysis_html.= '<tr><td align="center" colspan="4"><b>'.
1318: &mt('None of the selected students attempted the problem more than [_1] times.',$try-1).
1319: '</b></td></tr>';
1320: } else {
1321: $analysis_html.= '<tr><td colspan="4" align="center"><b>'.
1322: &mt('None of the selected students have attempted the problem').'</b></td></tr>';
1323: }
1324: last;
1325: }
1326: my $concept_graph='';
1327: if ($num_concepts > 1) {
1328: #
1329: # Create concept plot
1330: my @concept_plot_data;
1331: for (my $j=0;$j<=$#concept_data;$j++) {
1332: my $total = $concept_data[$j]->[$try]->{'_total'};
1333: if ($total == 0) {
1334: $concept_plot_data[$j] = 0;
1335: } else {
1336: $concept_plot_data[$j] = 100 *
1337: sprintf('%0.3f',
1338: $concept_data[$j]->[$try]->{'_correct'} /
1339: $total);
1340: }
1341: }
1342: #
1343: $concept_graph = &Apache::loncommon::DrawBarGraph
1344: ('Correct Concepts','Concept Number','Percent Correct',
1345: 100,$plotcolors,undef,\@concept_plot_data,{xskip=>1});
1346: }
1347: #
1348: # Create Foil Plots
1349: my $data_count = $response_data{'_total'}->[$try];
1350: my $correct = $response_data{'_correct'}->[$try];
1351: $correct |= 0;
1352: my @Datasets;
1353: foreach my $option ('_correct',@{$ORdata->{'_Options'}}) {
1354: next if (! exists($foil_plot[$try]->{$option}));
1355: push(@Datasets,$foil_plot[$try]->{$option});
1356: }
1357: #
1358: # Put a blank in the data set between concepts
1359: for (my $set =0;$set<=$#Datasets;$set++) {
1360: my @Data = @{$Datasets[$set]};
1361: my $idx = 0;
1362: foreach my $concept (@{$Concepts}) {
1363: foreach my $foilid (@{$concept->{'foils'}}) {
1364: $Datasets[$set]->[$idx++]=shift(@Data);
1365: }
1366: if ($concept->{'name'} ne $Concepts->[-1]->{'name'}) {
1367: $Datasets[$set]->[$idx++] = 0;
1368: }
1369: }
1370: }
1371: #
1372: # Set up the labels needed for the bar graph
1373: my @Labels;
1374: my $idx = 1;
1375: foreach my $concept (@{$Concepts}) {
1376: foreach my $foilid (@{$concept->{'foils'}}) {
1377: push(@Labels,$idx++);
1378: }
1379: push(@Labels,'');
1380: }
1381: #
1382: my $correct_graph = &Apache::loncommon::DrawBarGraph
1383: ('Correct Statements','Statement','% Answered Correct',
1384: 100,$plotcolors,\@Labels,$Datasets[0],{xskip=>1});
1385:
1386: #
1387: #
1388: next if (! defined($Datasets[0]));
1389: for (my $i=0; $i< scalar(@{$Datasets[0]});$i++) {
1390: $Datasets[0]->[$i]=0;
1391: }
1392: my $count = $response_data{'_total'}->[$try] -
1393: $response_data{'_correct'}->[$try];
1394: my $incorrect_graph = &Apache::loncommon::DrawBarGraph
1395: ('Incorrect Statements','Statement','% Chosen Incorrectly',
1396: 100,$plotcolors,\@Labels,@Datasets,{xskip=>1});
1397: $analysis_html.=
1398: '<tr><td colspan="4" align="center">'.
1399: '<font size="+1">'.
1400: &mt('Attempt [_1], [_2] submissions, [_3] correct, [_4] incorrect',
1401: $try,$data_count,$correct,$data_count-$correct).
1402: '</font>'.'</td></tr>'.$/.
1403: '<tr>'.
1404: '<td>'.$concept_graph.'</td>'.
1405: '<td>'.$correct_graph.'</td>'.
1406: '<td>'.$incorrect_graph.'</td>'.
1407: '<td>'.$optionkey.'<td>'.
1408: '</tr>'.$/;
1409: }
1410: $analysis_html .= "</table>\n";
1411: $table .= $analysis_html;
1412: return $table;
1413: }
1414:
1415: sub OR_analyze_by_tries {
1416: my ($r,$PerformanceData,$mintries,$maxtries) = @_;
1417: my %Trydata;
1418: $mintries = 1 if (! defined($mintries) || $mintries < 1);
1419: $maxtries = $mintries if (! defined($maxtries) || $maxtries < $mintries);
1420: my @students;
1421: foreach my $row (@$PerformanceData) {
1422: next if (! defined($row));
1423: my $tries = &get_tries_from_row($row);
1424: my %Row = &Process_OR_Row($row);
1425: next if (! %Row);
1426: my $student_id = $row->[&Apache::loncoursedata::RD_student_id()];
1427: $students[$tries]->{$student_id}++;
1428: while (my ($foilid,$href) = each(%Row)) {
1429: if (! ref($href)) {
1430: $Trydata{$foilid}->[$tries] += $href;
1431: next;
1432: }
1433: while (my ($option,$value) = each(%$href)) {
1434: $Trydata{$foilid}->[$tries]->{$option}+=$value;
1435: }
1436: }
1437: }
1438: for (my $try=$mintries;$try<=$maxtries;$try++) {
1439: $Trydata{'_studentcount'}->[$try] = scalar(keys(%{$students[$try]}));
1440: }
1441: return %Trydata;
1442: }
1443:
1444: #########################################################
1445: #
1446: # Option Response: Time Analysis
1447: #
1448: #########################################################
1449: sub OR_time_analysis {
1450: my ($performance_data,$ORdata) = @_;
1451: my ($table,$Foils,$Concepts) = &build_foil_index($ORdata);
1452: my $foilkey = &build_option_index($ORdata);
1453: my $num_concepts = 1;
1454: if (defined($Concepts)) { $num_concepts = scalar(@$Concepts); }
1455: #
1456: if ($num_concepts < 2) {
1457: $table = '<h3>'.
1458: &mt('Not enough data for concept analysis. '.
1459: 'Performing Foil Analysis').
1460: '</h3>'.$table;
1461: }
1462: #
1463: my $num_plots = $env{'form.NumPlots'};
1464: my $num_data = scalar(@$performance_data)-1;
1465: #
1466: my $current_index;
1467: $table .= "<table>\n";
1468: for (my $i=0;$i<$num_plots;$i++) {
1469: ##
1470: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
1471: ('startdate_'.$i);
1472: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
1473: ('enddate_'.$i);
1474: if (! defined($starttime) || ! defined($endtime)) {
1475: my $sec_in_day = 86400;
1476: my $last_sub_time = &get_time_from_row($performance_data->[-1]);
1477: my ($sday,$smon,$syear) =
1478: (localtime($last_sub_time - $sec_in_day*$i))[3..5];
1479: $starttime = &Time::Local::timelocal(0,0,0,$sday,$smon,$syear);
1480: $endtime = $starttime + $sec_in_day;
1481: if ($i == ($num_plots -1 )) {
1482: $starttime = &get_time_from_row($performance_data->[0]);
1483: }
1484: }
1485: $table .= '<tr><td colspan="4" align="center"><font size="+1">'.
1486: &mt('Data from [_1] to [_2]',
1487: &Apache::lonlocal::locallocaltime($starttime),
1488: &Apache::lonlocal::locallocaltime($endtime)).
1489: '</font></td></tr>'.$/;
1490: my $startdateform = &Apache::lonhtmlcommon::date_setter
1491: ('Statistics','startdate_'.$i,$starttime);
1492: my $enddateform = &Apache::lonhtmlcommon::date_setter
1493: ('Statistics','enddate_'.$i,$endtime);
1494: #
1495: my $begin_index;
1496: my $end_index;
1497: my $j;
1498: while (++$j < scalar(@$performance_data)) {
1499: last if (&get_time_from_row($performance_data->[$j])
1500: > $starttime);
1501: }
1502: $begin_index = $j;
1503: while ($j < scalar(@$performance_data)) {
1504: if (&get_time_from_row($performance_data->[$j]) > $endtime) {
1505: last;
1506: } else {
1507: $j++;
1508: }
1509: }
1510: $end_index = $j;
1511: ##
1512: my ($processed_time_data,$correct,$data_count,$student_count) =
1513: &OR_time_process_data($performance_data,$begin_index,$end_index);
1514: $correct |= 0;
1515: ##
1516: $table .= '<tr><td colspan="4" align="center"><font size="+1">'.
1517: &mt('[_1] submissions from [_2] students, [_3] correct, [_4] incorrect',
1518: $data_count,$student_count,$correct,$data_count-$correct).
1519: '</font></td></tr>'.$/;
1520: my $concept_correct_plot = '';
1521: if ($num_concepts > 1) {
1522: $concept_correct_plot =
1523: &OR_Concept_Time_Analysis($processed_time_data,
1524: $correct,$data_count,$student_count,
1525: $ORdata,$Concepts);
1526: }
1527: my ($foil_correct_plot,$foil_incorrect_plot) =
1528: &OR_Foil_Time_Analysis($processed_time_data,
1529: $correct,$data_count,$student_count,
1530: $ORdata,$Foils,$Concepts);
1531: $table .= '<tr>'.
1532: '<td>'.$concept_correct_plot.'</td>'.
1533: '<td>'.$foil_correct_plot.'</td>'.
1534: '<td>'.$foil_incorrect_plot.'</td>'.
1535: '<td align="left" valign="top">'.$foilkey.'</td></tr>'.$/;
1536: $table .= '<tr><td colspan="4" align="center">'.
1537: &mt('Start time: [_1]',$startdateform).'<br />'.
1538: &mt('End time: [_1]',$enddateform).'</td></tr>'.$/;
1539: $table.= '<tr><td colspan="4"> </td></tr>'.$/;
1540: }
1541: $table .= '</table>';
1542: #
1543: return $table;
1544: }
1545:
1546: sub OR_Foil_Time_Analysis {
1547: my ($processed_time_data,$correct,$data_count,$student_count,
1548: $ORdata,$Foils,$Concepts) = @_;
1549: if ($data_count <= 0) {
1550: return ('<h2>'.&mt('There is no data to plot').'</h2>','');
1551: }
1552: my $analysis_html;
1553: my @plotdata;
1554: my @labels;
1555: foreach my $concept (@{$Concepts}) {
1556: foreach my $foil (@{$concept->{'foils'}}) {
1557: push(@labels,scalar(@labels)+1);
1558: my $total = $processed_time_data->{$foil}->{'_total'};
1559: if ($total == 0) {
1560: push(@{$plotdata[0]},0);
1561: } else {
1562: push(@{$plotdata[0]},
1563: 100 * $processed_time_data->{$foil}->{'_correct'} / $total);
1564: }
1565: my $total_incorrect = $total - $processed_time_data->{$foil}->{'_correct'};
1566: for (my $i=0;$i<scalar(@{$ORdata->{'_Options'}});$i++) {
1567: my $option = $ORdata->{'_Options'}->[$i];
1568: if ($total_incorrect == 0) {
1569: push(@{$plotdata[$i+1]},0);
1570: } else {
1571: push(@{$plotdata[$i+1]},
1572: 100 * $processed_time_data->{$foil}->{$option} / $total_incorrect);
1573: }
1574: }
1575: }
1576: # Put in a blank one
1577: push(@labels,'');
1578: push(@{$plotdata[0]},0);
1579: for (my $i=0;$i<scalar(@{$ORdata->{'_Options'}});$i++) {
1580: push(@{$plotdata[$i+1]},0);
1581: }
1582: }
1583: #
1584: # Create the plot
1585: my $correct_plot = &Apache::loncommon::DrawBarGraph('Correct Statements',
1586: 'Statement Number',
1587: 'Percent Correct',
1588: 100,
1589: $plotcolors,
1590: undef,
1591: $plotdata[0],
1592: {xskip=>1});
1593: for (my $j=0; $j< scalar(@{$plotdata[0]});$j++) {
1594: $plotdata[0]->[$j]=0;
1595: }
1596: my $incorrect_plot =
1597: &Apache::loncommon::DrawBarGraph('Incorrect Statements',
1598: 'Statement Number',
1599: 'Incorrect Option Choice',
1600: 100,
1601: $plotcolors,
1602: undef,
1603: @plotdata,{xskip=>1});
1604: return ($correct_plot,$incorrect_plot);
1605: }
1606:
1607: sub OR_Concept_Time_Analysis {
1608: my ($processed_time_data,$correct,$data_count,$student_count,
1609: $ORdata,$Concepts) = @_;
1610: return '' if ($data_count == 0);
1611: #
1612: # Put the data in plottable form
1613: my @plotdata;
1614: foreach my $concept (@$Concepts) {
1615: my ($total,$correct);
1616: foreach my $foil (@{$concept->{'foils'}}) {
1617: $total += $processed_time_data->{$foil}->{'_total'};
1618: $correct += $processed_time_data->{$foil}->{'_correct'};
1619: }
1620: if ($total == 0) {
1621: push(@plotdata,0);
1622: } else {
1623: push(@plotdata,100 * $correct / $total);
1624: }
1625: }
1626: #
1627: # Create the plot
1628: return &Apache::loncommon::DrawBarGraph('Correct Concepts',
1629: 'Concept Number',
1630: 'Percent Correct',
1631: 100,
1632: $plotcolors,
1633: undef,
1634: \@plotdata,{xskip=>1});
1635: }
1636:
1637: sub OR_time_process_data {
1638: my ($performance_data,$begin_index,$end_index)=@_;
1639: my %processed_time_data;
1640: my %distinct_students;
1641: my ($correct,$data_count);
1642: if (($begin_index == $end_index) &&
1643: ($end_index != scalar(@$performance_data)-1)) {
1644: return undef;
1645: }
1646: # Be sure we include the last one if we are asked for it.
1647: # That we have to correct here (and not when $end_index is
1648: # given a value) should probably be considered a bug.
1649: if ($end_index == scalar(@$performance_data)-1) {
1650: $end_index++;
1651: }
1652: my $count;
1653: for (my $i=$begin_index;$i<$end_index;$i++) {
1654: my $attempt = $performance_data->[$i];
1655: $count++;
1656: next if (! defined($attempt));
1657: my %attempt = &Process_OR_Row($attempt);
1658: $data_count++;
1659: $correct += $attempt{'_correct'};
1660: $distinct_students{$attempt->[&Apache::loncoursedata::RD_student_id()]}++;
1661: while (my ($foilid,$href) = each(%attempt)) {
1662: if (! ref($href)) {
1663: $processed_time_data{$foilid} += $href;
1664: next;
1665: }
1666: while (my ($option,$value) = each(%$href)) {
1667: $processed_time_data{$foilid}->{$option}+=$value;
1668: }
1669: }
1670: }
1671: return (\%processed_time_data,$correct,$data_count,
1672: scalar(keys(%distinct_students)));
1673: }
1674:
1675: sub build_foil_index {
1676: my ($ORdata) = @_;
1677: return if (! exists($ORdata->{'_Foils'}));
1678: my %Foildata = %{$ORdata->{'_Foils'}};
1679: my @Foils = sort(keys(%Foildata));
1680: my %Concepts;
1681: foreach my $foilid (@Foils) {
1682: push(@{$Concepts{$Foildata{$foilid}->{'_Concept'}}},
1683: $foilid);
1684: }
1685: undef(@Foils);
1686: # Having gathered the concept information in a hash, we now translate it
1687: # into an array because we need to be consistent about order.
1688: # Also put the foils in order, too.
1689: my $sortfunction = sub {
1690: my %Numbers = (one => 1,
1691: two => 2,
1692: three => 3,
1693: four => 4,
1694: five => 5,
1695: six => 6,
1696: seven => 7,
1697: eight => 8,
1698: nine => 9,
1699: ten => 10,);
1700: my $a1 = lc($a);
1701: my $b1 = lc($b);
1702: if (exists($Numbers{$a1})) {
1703: $a1 = $Numbers{$a1};
1704: }
1705: if (exists($Numbers{$b1})) {
1706: $b1 = $Numbers{$b1};
1707: }
1708: if (($a1 =~/^\d+$/) && ($b1 =~/^\d+$/)) {
1709: return $a1 <=> $b1;
1710: } else {
1711: return $a1 cmp $b1;
1712: }
1713: };
1714: my @Concepts;
1715: foreach my $concept (sort $sortfunction (keys(%Concepts))) {
1716: if (! defined($Concepts{$concept})) {
1717: $Concepts{$concept}=[];
1718: # next;
1719: }
1720: push(@Concepts,{ name => $concept,
1721: foils => [@{$Concepts{$concept}}]});
1722: push(@Foils,(@{$Concepts{$concept}}));
1723: }
1724: #
1725: # Build up the table of row labels.
1726: my $table = '<table border="1" >'."\n";
1727: if (@Concepts > 1) {
1728: $table .= '<tr>'.
1729: '<th>'.&mt('Concept Number').'</th>'.
1730: '<th>'.&mt('Concept').'</th>'.
1731: '<th>'.&mt('Foil Number').'</th>'.
1732: '<th>'.&mt('Foil Name').'</th>'.
1733: '<th>'.&mt('Foil Text').'</th>'.
1734: '<th>'.&mt('Correct Value').'</th>'.
1735: "</tr>\n";
1736: } else {
1737: $table .= '<tr>'.
1738: '<th>'.&mt('Foil Number').'</th>'.
1739: '<th>'.&mt('Foil Name').'</th>'.
1740: '<th>'.&mt('Foil Text').'</th>'.
1741: '<th>'.&mt('Correct Value').'</th>'.
1742: "</tr>\n";
1743: }
1744: my $conceptindex = 1;
1745: my $foilindex = 1;
1746: foreach my $concept (@Concepts) {
1747: my @FoilsInConcept = @{$concept->{'foils'}};
1748: my $firstfoil = shift(@FoilsInConcept);
1749: if (@Concepts > 1) {
1750: $table .= '<tr>'.
1751: '<td>'.$conceptindex.'</td>'.
1752: '<td>'.&HTML::Entities::encode($concept->{'name'},'<>&"').'</td>'.
1753: '<td>'.$foilindex++.'</td>'.
1754: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'name'},'<>&"').'</td>'.
1755: '<td>'.$Foildata{$firstfoil}->{'text'}.'</td>'.
1756: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'value'},'<>&"').'</td>'.
1757: "</tr>\n";
1758: } else {
1759: $table .= '<tr>'.
1760: '<td>'.$foilindex++.'</td>'.
1761: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'name'},'<>&"').'</td>'.
1762: '<td>'.$Foildata{$firstfoil}->{'text'}.'</td>'.
1763: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'value'},'<>&"').'</td>'.
1764: "</tr>\n";
1765: }
1766: foreach my $foilid (@FoilsInConcept) {
1767: if (@Concepts > 1) {
1768: $table .= '<tr>'.
1769: '<td></td>'.
1770: '<td></td>'.
1771: '<td>'.$foilindex.'</td>'.
1772: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'name'},'<>&"').'</td>'.
1773: '<td>'.$Foildata{$foilid}->{'text'}.'</td>'.
1774: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'value'},'<>&"').'</td>'.
1775: "</tr>\n";
1776: } else {
1777: $table .= '<tr>'.
1778: '<td>'.$foilindex.'</td>'.
1779: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'name'},'<>&"').'</td>'.
1780: '<td>'.$Foildata{$foilid}->{'text'}.'</td>'.
1781: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'value'},'<>&"').'</td>'.
1782: "</tr>\n";
1783: }
1784: } continue {
1785: $foilindex++;
1786: }
1787: } continue {
1788: $conceptindex++;
1789: }
1790: $table .= "</table>\n";
1791: #
1792: # Build option index with color stuff
1793: return ($table,\@Foils,\@Concepts);
1794: }
1795:
1796: sub build_option_index {
1797: my ($ORdata)= @_;
1798: my $table = "<table>\n";
1799: my $optionindex = 0;
1800: my @Rows;
1801: foreach my $option (&mt('correct option chosen'),@{$ORdata->{'_Options'}}) {
1802: my $color = $plotcolors->[$optionindex++];
1803: push (@Rows,
1804: '<tr>'.
1805: '<td bgcolor="'.$color.'">'.
1806: '<font color="'.$color.'">'.('*'x3).'</font>'.'</td>'.
1807: '<td>'.&HTML::Entities::encode($option,'<>&"').'</td>'.
1808: "</tr>\n");
1809: }
1810: shift(@Rows); # Throw away 'correct option chosen' color
1811: $table .= join('',reverse(@Rows));
1812: $table .= "</table>\n";
1813: }
1814:
1815: sub build_foil_key {
1816: my ($foils,$extra_data)= @_;
1817: if (! defined($extra_data)) { $extra_data = {}; }
1818: my $table = "<table>\n";
1819: my $foil_index = 0;
1820: my @rows;
1821: foreach my $foil (&mt('correct foil chosen'),@{$foils}) {
1822: my $color = $plotcolors->[$foil_index++];
1823: push (@rows,
1824: '<tr>'.
1825: '<td bgcolor="'.$color.'" class="key">'.
1826: '<font color="'.$color.'">'.('*'x4).'</font></td>'.
1827: '<td>'.&HTML::Entities::encode($foil,'<>&"').
1828: (' 'x2).$extra_data->{$foil}.'</td>'.
1829: "</tr>\n");
1830: }
1831: shift(@rows); # Throw away 'correct foil chosen' color
1832: $table .= join('',reverse(@rows));
1833: $table .= "</table>\n";
1834: }
1835:
1836: #########################################################
1837: #########################################################
1838: ##
1839: ## Generic Interface Routines
1840: ##
1841: #########################################################
1842: #########################################################
1843: sub CreateInterface {
1844: ##
1845: ## Environment variable initialization
1846: if (! exists($env{'form.AnalyzeOver'})) {
1847: $env{'form.AnalyzeOver'} = 'tries';
1848: }
1849: ##
1850: ## Build the menu
1851: my $Str = '';
1852: $Str .= &Apache::lonhtmlcommon::breadcrumbs('Detailed Problem Analysis');
1853: $Str .= '<table cellspacing="5">'."\n";
1854: $Str .= '<tr>';
1855: $Str .= '<td align="center"><b>'.&mt('Sections').'</b></td>';
1856: $Str .= '<td align="center"><b>'.&mt('Groups').'</b></td>';
1857: $Str .= '<td align="center"><b>'.&mt('Access Status').'</b></td>';
1858: $Str .= '<td align="center"> </td>';
1859: $Str .= '</tr>'."\n";
1860: ##
1861: ##
1862: $Str .= '<tr><td align="center">'."\n";
1863: $Str .= &Apache::lonstatistics::SectionSelect('Section','multiple',5);
1864: $Str .= '</td>';
1865: #
1866: $Str .= '<td align="center">'."\n";
1867: $Str .= &Apache::lonstatistics::GroupSelect('Group','multiple',5);
1868: $Str .= '</td>';
1869: #
1870: $Str .= '<td align="center">';
1871: $Str .= &Apache::lonhtmlcommon::StatusOptions(undef,undef,5);
1872: $Str .= '</td>';
1873: #
1874: ##
1875: ##
1876: $Str .= '<td>';
1877: ##
1878: my $showprob_checkbox =
1879: '<input type="checkbox" name="show_prob" value="true" ';
1880: if ($env{'form.show_prob'} eq 'true') {
1881: $showprob_checkbox .= 'checked ';
1882: }
1883: $showprob_checkbox.= ' />';
1884: $Str.= '<nobr><label>'.
1885: &mt('Show problem [_1]',$showprob_checkbox).
1886: '</label></nobr><br />';
1887: ##
1888: my $analyze_selector = '<select name="AnalyzeOver" >';
1889: $analyze_selector .= '<option value="tries" ';
1890: if (! exists($env{'form.AnalyzeOver'}) ||
1891: $env{'form.AnalyzeOver'} eq 'tries'){
1892: # Default to tries
1893: $analyze_selector .= ' selected ';
1894: }
1895: $analyze_selector .= '>'.&mt('Tries').'</option>';
1896: $analyze_selector .= '<option value="time" ';
1897: $analyze_selector .= ' selected ' if ($env{'form.AnalyzeOver'} eq 'time');
1898: $analyze_selector .= '>'.&mt('Time').'</option>';
1899: $analyze_selector .= '</select>';
1900: $Str .= '<nobr><label>'.
1901: &mt('Analyze Over [_1] [_2]',
1902: $analyze_selector,
1903: &Apache::loncommon::help_open_topic('Analysis_Analyze_Over')).
1904: '</label></nobr><br />'.$/;
1905: ##
1906: my $numplots_selector = '<select name="NumPlots">';
1907: if (! exists($env{'form.NumPlots'})
1908: || $env{'form.NumPlots'} < 1
1909: || $env{'form.NumPlots'} > 20) {
1910: $env{'form.NumPlots'} = 5;
1911: }
1912: foreach my $i (1,2,3,4,5,6,7,8,10,15,20) {
1913: $numplots_selector .= '<option value="'.$i.'" ';
1914: if ($env{'form.NumPlots'} == $i) { $numplots_selector.=' selected '; }
1915: $numplots_selector .= '>'.$i.'</option>';
1916: }
1917: $numplots_selector .= '</select></nobr><br />';
1918: $Str .= '<nobr><label>'.&mt('Number of Plots [_1]',$numplots_selector).
1919: '</label></nobr>';
1920: ##
1921: $Str .= '<nobr><label>'.&mt('Status: [_1]',
1922: '<input type="text" '.
1923: 'name="stats_status" size="60" value="" />'
1924: ).
1925: '</label></nobr>';
1926: $Str .= '</td>';
1927: ##
1928: ##
1929: $Str .= '</tr>'."\n";
1930: $Str .= '</table>'."\n";
1931: return $Str;
1932: }
1933:
1934: #########################################################
1935: #########################################################
1936: ##
1937: ## Misc Option Response functions
1938: ##
1939: #########################################################
1940: #########################################################
1941: sub get_time_from_row {
1942: my ($row) = @_;
1943: if (ref($row)) {
1944: return $row->[&Apache::loncoursedata::RD_timestamp()];
1945: }
1946: return undef;
1947: }
1948:
1949: sub get_tries_from_row {
1950: my ($row) = @_;
1951: if (ref($row)) {
1952: return $row->[&Apache::loncoursedata::RD_tries()];
1953: }
1954: return undef;
1955: }
1956:
1957: sub hashify_attempt {
1958: my ($row) = @_;
1959: my %attempt;
1960: $attempt{'student'} = $row->[&Apache::loncoursedata::RD_sname()];
1961: $attempt{'tries'} = $row->[&Apache::loncoursedata::RD_tries()];
1962: $attempt{'submission'} = &unescape($row->[&Apache::loncoursedata::RD_submission()]);
1963: $attempt{'award'} = $row->[&Apache::loncoursedata::RD_awarddetail()];
1964: $attempt{'timestamp'} = $row->[&Apache::loncoursedata::RD_timestamp()];
1965: return %attempt;
1966: }
1967:
1968: sub Process_OR_Row {
1969: my ($row) = @_;
1970: my %RowData;
1971: # my $student_id = $row->[&Apache::loncoursedata::RD_student_id()];
1972: my $award = $row->[&Apache::loncoursedata::RD_awarddetail()];
1973: my $grading = $row->[&Apache::loncoursedata::RD_response_eval()];
1974: my $submission = $row->[&Apache::loncoursedata::RD_submission()];
1975: my $time = $row->[&Apache::loncoursedata::RD_timestamp()];
1976: # my $tries = $row->[&Apache::loncoursedata::RD_tries()];
1977: return undef if ($award eq 'MISSING_ANSWER');
1978: if (&submission_is_correct($award)) {
1979: $RowData{'_correct'} = 1;
1980: }
1981: $RowData{'_total'} = 1;
1982: my @Foilgrades = split('&',$grading);
1983: my @Foilsubs = split('&',$submission);
1984: for (my $j=0;$j<=$#Foilgrades;$j++) {
1985: my ($foilid,$correct) = split('=',$Foilgrades[$j]);
1986: $foilid = &unescape($foilid);
1987: my (undef,$submission) = split('=',$Foilsubs[$j]);
1988: if ($correct) {
1989: $RowData{$foilid}->{'_correct'}++;
1990: } else {
1991: $submission = &unescape($submission);
1992: $RowData{$foilid}->{$submission}++;
1993: }
1994: $RowData{$foilid}->{'_total'}++;
1995: }
1996: return %RowData;
1997: }
1998:
1999: sub submission_is_correct {
2000: my ($award) = @_;
2001: if ($award =~ /(APPROX_ANS|EXACT_ANS)/) {
2002: return 1;
2003: } else {
2004: return 0;
2005: }
2006: }
2007:
2008: 1;
2009:
2010: __END__
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/back.gif){kind=icon}
Return to lonproblemanalysis.pm CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [LON-CAPA] / loncom / interface / statistics