1: # The LearningOnline Network with CAPA
2: #
3: # $Id: lonproblemanalysis.pm,v 1.129 2006/12/21 19:52:28 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: foreach my $item ('answer','unit','ans_high','ans_low') {
640: $correct->{$sname.':'.$sdom}->{$item} =
641: $analysis->{$key.'.'.$item}->[0];
642: }
643: $answers{$analysis->{$key.'.answer'}->[0]}++;
644: &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
645: &mt('last student'));
646: }
647: &Apache::lonstathelpers::write_analysis_cache();
648: &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
649: return ($correct,\%answers);
650: }
651:
652: #
653: # Inputs: $r, $width, $height, $data
654: # $n = number of students
655: # $data = hashref of $answer => $frequency pairs
656: sub numerical_one_dimensional_plot {
657: my ($r,$width,$height,$data)=@_;
658: #
659: # Compute data -> image scaling factors
660: my $max_y = 0;
661: my $min_x = undef;
662: my $max_x = undef;
663: my $n = 0;
664: while (my ($answer,$count) = each(%$data)) {
665: $n+=$count;
666: $max_y = $count if ($max_y < $count);
667: if (! defined($min_x) || $answer < $min_x) {
668: $min_x = $answer;
669: }
670: if (! defined($max_x) || $answer > $max_x) {
671: $max_x = $answer;
672: }
673: }
674: #
675: my $min_max_difference = $max_x - $min_x;
676: if (! defined($min_max_difference) || $min_max_difference == 0) {
677: $min_max_difference = 1;
678: }
679: my $h_scale = ($width-10)/$min_max_difference;
680: #
681: my $ticscale = 5;
682: if ($max_y * $ticscale > $height/2) {
683: $ticscale = int($height/2/$max_y);
684: $ticscale = 1 if ($ticscale < 1);
685: }
686: #
687: # Create the plot
688: my $plot =
689: qq{<drawimage width="$width" height="$height" bgcolor="transparent" >};
690: while (my ($answer,$count) = each(%$data)) {
691: my $xloc = 5+$h_scale*($answer - $min_x);
692: my $top = $height/2-$count*$ticscale;
693: my $bottom = $height/2+$count*$ticscale;
694: $plot .= &line($xloc,$top,$xloc,$bottom,'888888',1);
695: }
696: #
697: # Put the scale on last to ensure it is on top of the data.
698: if ($min_x < 0 && $max_x > 0) {
699: my $circle_x = 5+$h_scale*abs($min_x); # '0' in data coordinates
700: my $r = 4;
701: $plot .= &line(5,$height/2,$circle_x-$r,$height/2,'000000',1);
702: $plot .= &circle($circle_x,$height/2,$r+1,'000000');
703: $plot .= &line($circle_x+$r,$height/2,$width-5,$height/2,'000000',1);
704: } else {
705: $plot .= &line(5,$height/2,$width-5,$height/2,'000000',1);
706: }
707: $plot .= '</drawimage>';
708: my $plotresult = &Apache::lonxml::xmlparse($r,'web',$plot);
709: my $result = '<table>'.
710: '<tr><td colspan="3" align="center">'.
711: '<font size="+2">'.&mt('Distribution of correct answers').'</font>'.
712: '<br />'.&mt('[_1] students, [_2] distinct correct answers',
713: $n,scalar(keys(%$data))).
714: '<br />'.&mt('Maximum number of coinciding values: [_1]',$max_y).
715: '</td></tr>'.
716: '<tr>'.
717: '<td valign="center">'.$min_x.'</td>'.
718: '<td>'.$plotresult.'</td>'.
719: '<td valign="center">'.$max_x.'</td>'.
720: '</tr>'.
721: '</table>';
722: return $result;
723: }
724:
725: ##
726: ## Helper subroutines for <drawimage>.
727: ## These should probably go somewhere more suitable soon.
728: sub line {
729: my ($x1,$y1,$x2,$y2,$color,$thickness) = @_;
730: return qq{<line x1="$x1" y1="$y1" x2="$x2" y2="$y2" color="$color" thickness="$thickness" />};
731: }
732:
733: sub text {
734: my ($x,$y,$color,$text,$font,$direction) = @_;
735: if (! defined($font) || $font !~ /^(tiny|small|medium|large|giant)$/) {
736: $font = 'medium';
737: }
738: if (! defined($direction) || $direction ne 'vertical') {
739: $direction = '';
740: }
741: return qq{<text x="$x" y="$y" color="$color" font="$font" direction="$direction" >$text</text>};
742: }
743:
744: sub rectangle {
745: my ($x1,$y1,$x2,$y2,$color,$thickness,$filled) = @_;
746: return qq{<rectangle x1="$x1" y1="$y1" x2="$x2" y2="$y2" color="$color" thickness="$thickness" filled="$filled" />};
747: }
748:
749: sub arc {
750: my ($x,$y,$width,$height,$start,$end,$color,$thickness,$filled)=@_;
751: return qq{<arc x="$x" y="$y" width="$width" height="$height" start="$start" end="$end" color="$color" thickness="$thickness" filled="$filled" />};
752: }
753:
754: sub circle {
755: my ($x,$y,$radius,$color,$thickness,$filled)=@_;
756: return &arc($x,$y,$radius,$radius,0,360,$color,$thickness,$filled);
757: }
758:
759: #########################################################
760: #########################################################
761: ##
762: ## Radio Response Routines
763: ##
764: #########################################################
765: #########################################################
766: sub radio_response_analysis {
767: my ($r,$problem,$problem_analysis,$students) = @_;
768: #
769: if ($env{'form.AnalyzeOver'} !~ /^(tries|time)$/) {
770: $r->print('Bad request');
771: }
772: #
773: my ($resource,$partid,$respid) = ($problem->{'resource'},
774: $problem->{'part'},
775: $problem->{'respid'});
776: #
777: my $analysis_html;
778: my $foildata = $problem_analysis->{'_Foils'};
779: my ($table,$foils,$concepts) = &build_foil_index($problem_analysis);
780: if (! defined($concepts)) {
781: $concepts = [];
782: }
783: #
784: my %true_foils;
785: my $num_true = 0;
786: if (! $problem_analysis->{'answercomputed'}) {
787: foreach my $foil (@$foils) {
788: if ($foildata->{$foil}->{'value'} eq 'true') {
789: $true_foils{$foil}++;
790: }
791: }
792: $num_true = scalar(keys(%true_foils));
793: }
794: #
795: $analysis_html .= $table;
796: # Gather student data
797: my $response_data = &Apache::loncoursedata::get_response_data
798: ([&Apache::lonstatistics::get_selected_sections()],
799: [&Apache::lonstatistics::get_selected_groups()],
800: $Apache::lonstatistics::enrollment_status,
801: $resource->symb,$respid);
802: my $correct; # either a hash reference or a scalar
803: if ($problem_analysis->{'answercomputed'} || scalar(@$concepts) > 1) {
804: # This takes a while for large classes...
805: &Apache::lonstathelpers::GetStudentAnswers($r,$problem,$students,
806: 'Statistics',
807: 'stats_status');
808: foreach my $student (@$students) {
809: my ($idx,@remainder) = split('&',$student->{'answer'});
810: my ($answer) = ($remainder[$idx]=~/^(.*)=([^=]*)$/);
811: $correct->{$student->{'username'}.':'.$student->{'domain'}}=
812: &unescape($answer);
813: }
814: } else {
815: foreach my $foil (keys(%$foildata)) {
816: if ($foildata->{$foil}->{'value'} eq 'true') {
817: $correct = $foildata->{$foil}->{'name'};
818: }
819: }
820: }
821: #
822: if (! defined($response_data) || ref($response_data) ne 'ARRAY' ) {
823: $analysis_html = '<h2>'.
824: &mt('There is no submission data for this resource').
825: '</h2>';
826: $r->print($analysis_html);
827: return;
828: }
829: #
830: $analysis_html.='<table>';
831: for (my $plot_num = 1;$plot_num<=$env{'form.NumPlots'};$plot_num++) {
832: # classify data ->correct foil -> selected foil
833: my ($restriction_function,
834: $correct_foil_title,$incorrect_foil_title,
835: $pre_graph_text,$post_graph_text,
836: $no_data_text,@extra_data);
837: if ($env{'form.AnalyzeOver'} eq 'tries') {
838: $restriction_function = sub {($_[0]->{'tries'} == $plot_num?1:0)};
839: $correct_foil_title = 'Attempt '.$plot_num;
840: $incorrect_foil_title = 'Attempt '.$plot_num;
841: $pre_graph_text =
842: 'Attempt [_1], [_2] submissions, [_3] correct, [_4] incorrect';
843: $post_graph_text = '';
844: $no_data_text = 'No data exists for attempt [_1]';
845: } elsif ($env{'form.AnalyzeOver'} eq 'time') {
846: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
847: ('startdate_'.$plot_num);
848: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
849: ('enddate_'.$plot_num);
850: ($starttime,$endtime) = &ensure_start_end_times
851: ($starttime,$endtime,
852: &get_time_from_row($response_data->[0]),
853: &get_time_from_row($response_data->[-1]),
854: $plot_num);
855: $pre_graph_text =
856: 'Data from [_6] to [_7]<br /> [_2] submissions from [_5] students, [_3] correct, [_4] incorrect';
857: $extra_data[0] = &Apache::lonlocal::locallocaltime($starttime);
858: $extra_data[1] = &Apache::lonlocal::locallocaltime($endtime);
859: #
860: $post_graph_text =
861: &mt('Start time: [_1]',
862: &Apache::lonhtmlcommon::date_setter
863: ('Statistics','startdate_'.$plot_num,$starttime)).
864: '<br />'.
865: &mt('End time: [_1]',
866: &Apache::lonhtmlcommon::date_setter
867: ('Statistics','enddate_'.$plot_num,$endtime));
868: $restriction_function =
869: sub {
870: my $t = $_[0]->{'timestamp'};
871: if ($t >= $starttime && $t < $endtime) {
872: return 1;
873: } else {
874: return 0;
875: }
876: };
877: $no_data_text = 'No data for [_5] to [_6]';
878: }
879: my $foil_choice_data =
880: &classify_response_data($response_data,$correct,
881: $restriction_function);
882: # &Apache::lonstathelpers::log_hash_ref($foil_choice_data);
883: my $answers;
884: if (ref($correct)) {
885: my %tmp;
886: foreach my $foil (values(%$correct)) {
887: $tmp{$foil}++;
888: }
889: $answers = [keys(%tmp)];
890: } else {
891: $answers = [$correct];
892: }
893: # Concept Plot
894: my $concept_plot = '';
895: if (scalar(@$concepts) > 1) {
896: $concept_plot = &RR_concept_plot($concepts,$foil_choice_data,
897: 'Correct Concepts');
898: }
899: # % Choosing plot
900: my $choice_plot = &RR_create_percent_selected_plot
901: ($concepts,$foils,$foil_choice_data,$correct_foil_title);
902: # for each correct foil, how did they mark it? (stacked bar graph)
903: my ($stacked_plot,$count_by_foil);
904: if ($problem_analysis->{'answercomputed'} || $num_true > 1) {
905: ($stacked_plot,$count_by_foil) =
906: &RR_create_stacked_selection_plot($foils,$foil_choice_data,
907: $incorrect_foil_title,
908: \%true_foils);
909: }
910: #
911: if ($concept_plot ne '' ||
912: $choice_plot ne '' ||
913: $stacked_plot ne '') {
914: my $correct = $foil_choice_data->{'_correct'};
915: $correct |= 0;
916: my $incorrect = $foil_choice_data->{'_count'}-$correct;
917: $analysis_html.= '<tr><td colspan="4" align="center">'.
918: '<font size="+1">'.
919: &mt($pre_graph_text,
920: $plot_num,$foil_choice_data->{'_count'},
921: $correct,
922: $incorrect,
923: $foil_choice_data->{'_students'},
924: @extra_data).
925: '</td></tr>'.$/;
926: $analysis_html.=
927: '<tr>'.
928: '<td>'.$concept_plot.'</td>'.
929: '<td>'.$choice_plot.'</td>';
930: if ($stacked_plot ne '') {
931: $analysis_html .=
932: '<td>'.$stacked_plot.'</td>'.
933: '<td>'.&build_foil_key($foils,$count_by_foil).'</td>';
934: } else {
935: $analysis_html .= ('<td></td>'x2);
936: }
937: $analysis_html.='</tr>'.$/;
938: if (defined($post_graph_text)) {
939: $analysis_html.= '<tr><td colspan="4" align="center">'.
940: $post_graph_text.'</td></tr>'.$/;
941: }
942: } elsif ($no_data_text ne '') {
943: $analysis_html.='<tr><td colspan="4" align="center">'.
944: &mt($no_data_text,
945: $plot_num,$foil_choice_data->{'_count'},
946: $correct,
947: $foil_choice_data->{'_count'}-$correct,
948: @extra_data);
949: if (defined($post_graph_text)) {
950: $analysis_html.='<br />'.$post_graph_text;
951: }
952: $analysis_html.='</td></tr>'.$/;
953: }
954: } # end of loop for plots
955: $analysis_html.='</table>';
956: $r->print($analysis_html);
957: }
958:
959: sub ensure_start_end_times {
960: my ($start,$end,$first,$last,$plot_num) = @_;
961: if (! defined($start) || ! defined($end)) {
962: my $sec_in_day = 86400;
963: my ($sday,$smon,$syear) =
964: (localtime($last - $sec_in_day*($plot_num-1)))[3..5];
965: $start = &Time::Local::timelocal(0,0,0,$sday,$smon,$syear);
966: $end = $start + $sec_in_day;
967: if ($plot_num == $env{'form.NumPlots'}) {
968: $start = $first;
969: }
970: }
971: return ($start,$end);
972: }
973:
974: sub RR_concept_plot {
975: my ($concepts,$foil_data,$title) = @_;
976: #
977: my %correct_by_concept;
978: my %incorrect_by_concept;
979: my %true;
980: foreach my $concept (@$concepts) {
981: foreach my $foil (@{$concept->{'foils'}}) {
982: next if (! exists($foil_data->{$foil}));
983: foreach my $choice (keys(%{$foil_data->{$foil}})) {
984: if ($choice eq $foil) {
985: $correct_by_concept{$concept->{'name'}} +=
986: $foil_data->{$foil}->{$choice};
987: } else {
988: $incorrect_by_concept{$concept->{'name'}} +=
989: $foil_data->{$foil}->{$choice};
990: }
991: }
992: }
993: }
994: #
995: # need arrays for incorrect and correct because we want to use different
996: # colors for them
997: my @correct;
998: #
999: my $total =0;
1000: for (my $i=0;$i<scalar(@$concepts);$i++) {
1001: my $concept = $concepts->[$i];
1002: $correct[$i] = $correct_by_concept{$concept->{'name'}};
1003: $total += $correct_by_concept{$concept->{'name'}}+
1004: $incorrect_by_concept{$concept->{'name'}};
1005: }
1006: if ($total == 0) { return ''; };
1007: for (my $i=0;$i<=$#correct;$i++) {
1008: $correct[$i] = sprintf('%0f',$correct[$i]/$total*100);
1009: }
1010: my $xlabel = 'concept';
1011: my $plot= &Apache::loncommon::DrawBarGraph($title,
1012: $xlabel,
1013: 'Percent Choosing',
1014: 100,
1015: ['#33ff00','#ff3300'],
1016: undef,
1017: \@correct);
1018: return $plot;
1019: }
1020:
1021: sub RR_create_percent_selected_plot {
1022: my ($concepts,$foils,$foil_data,$title) = @_;
1023: #
1024: if ($foil_data->{'_count'} == 0) { return ''; };
1025: my %correct_selections;
1026: my %incorrect_selections;
1027: foreach my $foil (@$foils) {
1028: # foil_data has format $foil_data->{true_foil}->{selected foil}=count
1029: next if (! exists($foil_data->{$foil}));
1030: while (my ($f,$count)= each(%{$foil_data->{$foil}})) {
1031: if ($f eq $foil) {
1032: $correct_selections{$foil} += $count;
1033: } else {
1034: $incorrect_selections{$f} += $count;
1035: }
1036: }
1037: }
1038: #
1039: # need arrays for incorrect and correct because we want to use different
1040: # colors for them
1041: my @correct;
1042: my @incorrect;
1043: #
1044: my $total = $foil_data->{'_count'};
1045: for (my $i=0;$i<scalar(@$foils);$i++) {
1046: my $foil = $foils->[$i];
1047: $correct[$i] = $correct_selections{$foil};
1048: $incorrect[$i] = $incorrect_selections{$foil};
1049: }
1050: for (my $i=0;$i<=$#correct;$i++) {
1051: $correct[$i] = sprintf('%2f',$correct[$i]/$total*100);
1052: }
1053: for (my $i=0;$i<=$#incorrect;$i++) {
1054: $incorrect[$i] = sprintf('%2f',$incorrect[$i]/$total*100);
1055: }
1056: #
1057: # Put a blank in the data sets between concepts, if there are concepts
1058: my @labels;
1059: if (defined($concepts) && scalar(@$concepts) > 1) {
1060: my @new_correct;
1061: my @new_incorrect;
1062: my $foil_count = 0;
1063: foreach my $concept (@$concepts) {
1064: foreach (@{$concept->{'foils'}}) {
1065: push(@new_correct, $correct[$foil_count]);
1066: push(@new_incorrect,$incorrect[$foil_count]);
1067: push(@labels,++$foil_count);
1068: }
1069: push(@new_correct,'');
1070: push(@new_incorrect,'');
1071: push(@labels,'');
1072: }
1073: @correct = @new_correct;
1074: @incorrect = @new_incorrect;
1075: } else {
1076: @labels = (1 .. scalar(@correct));
1077: }
1078: #
1079: my $xlabel = 'foil chosen';
1080: my $plot= &Apache::loncommon::DrawBarGraph($title,
1081: $xlabel,
1082: 'Percent Choosing',
1083: 100,
1084: ['#33ff00','#ff3300'],
1085: \@labels,
1086: \@correct,
1087: \@incorrect);
1088: return $plot;
1089: }
1090:
1091: sub RR_create_stacked_selection_plot {
1092: my ($foils,$foil_data,$title,$true_foils)=@_;
1093: #
1094: my @dataset; # array of array refs - multicolor rows $datasets[row]->[col]
1095: my @labels;
1096: my $count;
1097: my %column; # maps foil name to column in @datasets
1098: for (my $i=0;$i<scalar(@$foils);$i++) {
1099: my $foil = $foils->[$i];
1100: if (defined($true_foils) && scalar(keys(%$true_foils)) > 0 ) {
1101: next if (! $true_foils->{$foil} );
1102: push(@labels,$i+1);
1103: } else {
1104: next if (! exists($foil_data->{$foil}));
1105: push(@labels,$i+1);
1106: }
1107: next if (! exists($foil_data->{$foils->[$i]}));
1108: $column{$foil}= $count++;
1109: for (my $j=0;$j<scalar(@$foils);$j++) {
1110: my $value = 0;
1111: if ($i != $j ) {
1112: $value += $foil_data->{$foil}->{$foils->[$j]};
1113: }
1114: $dataset[$j]->[$column{$foil}]=$value;
1115: }
1116: }
1117: #
1118: return '' if (! scalar(keys(%column)));
1119: #
1120: my $grand_total = 0;
1121: my %count_per_foil;
1122: while (my ($foil,$bar) = each (%column)) {
1123: my $bar_total = 0;
1124: for (my $j=0;$j<scalar(@dataset);$j++) {
1125: $bar_total += $dataset[$j]->[$bar];
1126: }
1127: next if ($bar_total == 0);
1128: for (my $j=0;$j<scalar(@dataset);$j++) {
1129: $dataset[$j]->[$bar] =
1130: sprintf('%2f',$dataset[$j]->[$bar]/$bar_total * 100);
1131: }
1132: $count_per_foil{$foil}=' ( '.$bar_total.' )';
1133: $grand_total += $bar_total;
1134: }
1135: if ($grand_total == 0) {
1136: return ('',undef);
1137: }
1138: my @empty_row = ();
1139: foreach (@{$dataset[0]}) {
1140: push(@empty_row,0);
1141: }
1142: #
1143: my $graph = &Apache::loncommon::DrawBarGraph
1144: ($title,'Correct Foil','foils chosen Incorrectly',
1145: 100,$plotcolors,\@labels,\@empty_row,@dataset);
1146: return ($graph,\%count_per_foil);
1147: }
1148:
1149:
1150: #########################################################
1151: #########################################################
1152: ##
1153: ## Misc routines
1154: ##
1155: #########################################################
1156: #########################################################
1157:
1158: # if $correct is a hash ref, it is assumed to be indexed by student names.
1159: # the values are assumed to be hash refs with a key of 'answer'.
1160: sub classify_response_data {
1161: my ($full_row_data,$correct,$function) = @_;
1162: my %submission_data;
1163: my %students;
1164: my $max=0;
1165: foreach my $row (@$full_row_data) {
1166: my %subm = &hashify_attempt($row);
1167: if (ref($correct) eq 'HASH') {
1168: $subm{'correct'} = $correct->{$subm{'student'}};
1169: } else {
1170: $subm{'correct'} = $correct;
1171: }
1172: $subm{'submission'} =~ s/=\d+\s*$//;
1173: if (&$function(\%subm)) {
1174: $students{$subm{'student'}}++;
1175: $submission_data{'_count'}++;
1176: if (&submission_is_correct($subm{'award'})) {
1177: $submission_data{'_correct'}++;
1178: }
1179:
1180: if($max<++$submission_data{$subm{'correct'}}->{$subm{'submission'}}) {
1181: $max=$submission_data{$subm{'correct'}}->{$subm{'submission'}};
1182: }
1183: }
1184: }
1185: $submission_data{'_max'} = $max;
1186: $submission_data{'_students'}=scalar(keys(%students));
1187: return \%submission_data;
1188: }
1189:
1190:
1191: #########################################################
1192: #########################################################
1193: ##
1194: ## Option Response Routines
1195: ##
1196: #########################################################
1197: #########################################################
1198: sub OptionResponseAnalysis {
1199: my ($r,$problem,$problem_data,$Students) = @_;
1200: my ($resource,$respid) = ($problem->{'resource'},
1201: $problem->{'respid'});
1202: # Note: part data is not needed.
1203: my $PerformanceData = &Apache::loncoursedata::get_response_data
1204: ([&Apache::lonstatistics::get_selected_sections()],
1205: [&Apache::lonstatistics::get_selected_groups()],
1206: $Apache::lonstatistics::enrollment_status,
1207: $resource->symb,$respid);
1208: if (! defined($PerformanceData) ||
1209: ref($PerformanceData) ne 'ARRAY' ) {
1210: $r->print('<h2>'.
1211: &mt('There is no student data for this problem.').
1212: '</h2>');
1213: } else {
1214: $r->rflush();
1215: if ($env{'form.AnalyzeOver'} eq 'tries') {
1216: my $analysis_html = &OR_tries_analysis($r,
1217: $PerformanceData,
1218: $problem_data);
1219: $r->print($analysis_html);
1220: $r->rflush();
1221: } elsif ($env{'form.AnalyzeOver'} eq 'time') {
1222: my $analysis_html = &OR_time_analysis($PerformanceData,
1223: $problem_data);
1224: $r->print($analysis_html);
1225: $r->rflush();
1226: } else {
1227: $r->print('<h2>'.
1228: &mt('The analysis you have selected is '.
1229: 'not supported at this time').
1230: '</h2>');
1231: }
1232: }
1233: }
1234:
1235: #########################################################
1236: #
1237: # Option Response: tries Analysis
1238: #
1239: #########################################################
1240: sub OR_tries_analysis {
1241: my ($r,$PerformanceData,$ORdata) = @_;
1242: my $mintries = 1;
1243: my $maxtries = $env{'form.NumPlots'};
1244: my ($table,$Foils,$Concepts) = &build_foil_index($ORdata);
1245: if (! defined($Concepts)) {
1246: $Concepts = [];
1247: }
1248: my %response_data = &OR_analyze_by_tries($r,$PerformanceData,
1249: $mintries,$maxtries);
1250: my $analysis = '';
1251: #
1252: # Compute the data necessary to make the plots
1253: my @foil_plot;
1254: my @concept_data;
1255: for (my $j=0;$j<=scalar(@$Concepts);$j++) {
1256: my $concept = $Concepts->[$j];
1257: foreach my $foilid (@{$concept->{'foils'}}) {
1258: for (my $try=$mintries;$try<=$maxtries;$try++) {
1259: # concept analysis data
1260: $concept_data[$j]->[$try]->{'_correct'} +=
1261: $response_data{$foilid}->[$try]->{'_correct'};
1262: $concept_data[$j]->[$try]->{'_total'} +=
1263: $response_data{$foilid}->[$try]->{'_total'};
1264: #
1265: # foil analysis data
1266: if ($response_data{$foilid}->[$try]->{'_total'} == 0) {
1267: push(@{$foil_plot[$try]->{'_correct'}},0);
1268: } else {
1269: push(@{$foil_plot[$try]->{'_correct'}},
1270: 100*$response_data{$foilid}->[$try]->{'_correct'}/
1271: $response_data{$foilid}->[$try]->{'_total'});
1272: }
1273: foreach my $option (@{$ORdata->{'_Options'}}) {
1274: push(@{$foil_plot[$try]->{'_total'}},
1275: $response_data{$foilid}->[$try]->{'_total'});
1276: if ($response_data{$foilid}->[$try]->{'_total'} == 0) {
1277: push (@{$foil_plot[$try]->{$option}},0);
1278: } else {
1279: if ($response_data{$foilid}->[$try]->{'_total'} ==
1280: $response_data{$foilid}->[$try]->{'_correct'}) {
1281: push(@{$foil_plot[$try]->{$option}},0);
1282: } else {
1283: push (@{$foil_plot[$try]->{$option}},
1284: 100 *
1285: $response_data{$foilid}->[$try]->{$option} /
1286: ($response_data{$foilid}->[$try]->{'_total'}
1287: -
1288: $response_data{$foilid}->[$try]->{'_correct'}
1289: ));
1290: }
1291: }
1292: } # End of foreach my $option
1293: }
1294: } # End of foreach my $foilid
1295: } # End of concept loops
1296: #
1297: # Build a table for the plots
1298: my $analysis_html = "<br /><table>\n";
1299: my $optionkey = &build_option_index($ORdata);
1300: my $num_concepts = 1;
1301: if (defined($Concepts)) { $num_concepts = scalar(@$Concepts); }
1302: #
1303: for (my $try=$mintries;$try<=$maxtries;$try++) {
1304: if (! defined($response_data{'_total'}->[$try]) ||
1305: $response_data{'_total'}->[$try] == 0) {
1306: if ($try > 1) {
1307: $analysis_html.= '<tr><td align="center" colspan="4"><b>'.
1308: &mt('None of the selected students attempted the problem more than [_1] times.',$try-1).
1309: '</b></td></tr>';
1310: } else {
1311: $analysis_html.= '<tr><td colspan="4" align="center"><b>'.
1312: &mt('None of the selected students have attempted the problem').'</b></td></tr>';
1313: }
1314: last;
1315: }
1316: my $concept_graph='';
1317: if ($num_concepts > 1) {
1318: #
1319: # Create concept plot
1320: my @concept_plot_data;
1321: for (my $j=0;$j<=$#concept_data;$j++) {
1322: my $total = $concept_data[$j]->[$try]->{'_total'};
1323: if ($total == 0) {
1324: $concept_plot_data[$j] = 0;
1325: } else {
1326: $concept_plot_data[$j] = 100 *
1327: sprintf('%0.3f',
1328: $concept_data[$j]->[$try]->{'_correct'} /
1329: $total);
1330: }
1331: }
1332: #
1333: $concept_graph = &Apache::loncommon::DrawBarGraph
1334: ('Correct Concepts','Concept Number','Percent Correct',
1335: 100,$plotcolors,undef,\@concept_plot_data,{xskip=>1});
1336: }
1337: #
1338: # Create Foil Plots
1339: my $data_count = $response_data{'_total'}->[$try];
1340: my $correct = $response_data{'_correct'}->[$try];
1341: $correct |= 0;
1342: my @Datasets;
1343: foreach my $option ('_correct',@{$ORdata->{'_Options'}}) {
1344: next if (! exists($foil_plot[$try]->{$option}));
1345: push(@Datasets,$foil_plot[$try]->{$option});
1346: }
1347: #
1348: # Put a blank in the data set between concepts
1349: for (my $set =0;$set<=$#Datasets;$set++) {
1350: my @Data = @{$Datasets[$set]};
1351: my $idx = 0;
1352: foreach my $concept (@{$Concepts}) {
1353: foreach my $foilid (@{$concept->{'foils'}}) {
1354: $Datasets[$set]->[$idx++]=shift(@Data);
1355: }
1356: if ($concept->{'name'} ne $Concepts->[-1]->{'name'}) {
1357: $Datasets[$set]->[$idx++] = 0;
1358: }
1359: }
1360: }
1361: #
1362: # Set up the labels needed for the bar graph
1363: my @Labels;
1364: my $idx = 1;
1365: foreach my $concept (@{$Concepts}) {
1366: foreach my $foilid (@{$concept->{'foils'}}) {
1367: push(@Labels,$idx++);
1368: }
1369: push(@Labels,'');
1370: }
1371: #
1372: my $correct_graph = &Apache::loncommon::DrawBarGraph
1373: ('Correct Statements','Statement','% Answered Correct',
1374: 100,$plotcolors,\@Labels,$Datasets[0],{xskip=>1});
1375:
1376: #
1377: #
1378: next if (! defined($Datasets[0]));
1379: for (my $i=0; $i< scalar(@{$Datasets[0]});$i++) {
1380: $Datasets[0]->[$i]=0;
1381: }
1382: my $count = $response_data{'_total'}->[$try] -
1383: $response_data{'_correct'}->[$try];
1384: my $incorrect_graph = &Apache::loncommon::DrawBarGraph
1385: ('Incorrect Statements','Statement','% Chosen Incorrectly',
1386: 100,$plotcolors,\@Labels,@Datasets,{xskip=>1});
1387: $analysis_html.=
1388: '<tr><td colspan="4" align="center">'.
1389: '<font size="+1">'.
1390: &mt('Attempt [_1], [_2] submissions, [_3] correct, [_4] incorrect',
1391: $try,$data_count,$correct,$data_count-$correct).
1392: '</font>'.'</td></tr>'.$/.
1393: '<tr>'.
1394: '<td>'.$concept_graph.'</td>'.
1395: '<td>'.$correct_graph.'</td>'.
1396: '<td>'.$incorrect_graph.'</td>'.
1397: '<td>'.$optionkey.'<td>'.
1398: '</tr>'.$/;
1399: }
1400: $analysis_html .= "</table>\n";
1401: $table .= $analysis_html;
1402: return $table;
1403: }
1404:
1405: sub OR_analyze_by_tries {
1406: my ($r,$PerformanceData,$mintries,$maxtries) = @_;
1407: my %Trydata;
1408: $mintries = 1 if (! defined($mintries) || $mintries < 1);
1409: $maxtries = $mintries if (! defined($maxtries) || $maxtries < $mintries);
1410: my @students;
1411: foreach my $row (@$PerformanceData) {
1412: next if (! defined($row));
1413: my $tries = &get_tries_from_row($row);
1414: my %Row = &Process_OR_Row($row);
1415: next if (! %Row);
1416: my $student_id = $row->[&Apache::loncoursedata::RD_student_id()];
1417: $students[$tries]->{$student_id}++;
1418: while (my ($foilid,$href) = each(%Row)) {
1419: if (! ref($href)) {
1420: $Trydata{$foilid}->[$tries] += $href;
1421: next;
1422: }
1423: while (my ($option,$value) = each(%$href)) {
1424: $Trydata{$foilid}->[$tries]->{$option}+=$value;
1425: }
1426: }
1427: }
1428: for (my $try=$mintries;$try<=$maxtries;$try++) {
1429: $Trydata{'_studentcount'}->[$try] = scalar(keys(%{$students[$try]}));
1430: }
1431: return %Trydata;
1432: }
1433:
1434: #########################################################
1435: #
1436: # Option Response: Time Analysis
1437: #
1438: #########################################################
1439: sub OR_time_analysis {
1440: my ($performance_data,$ORdata) = @_;
1441: my ($table,$Foils,$Concepts) = &build_foil_index($ORdata);
1442: my $foilkey = &build_option_index($ORdata);
1443: my $num_concepts = 1;
1444: if (defined($Concepts)) { $num_concepts = scalar(@$Concepts); }
1445: #
1446: if ($num_concepts < 2) {
1447: $table = '<h3>'.
1448: &mt('Not enough data for concept analysis. '.
1449: 'Performing Foil Analysis').
1450: '</h3>'.$table;
1451: }
1452: #
1453: my $num_plots = $env{'form.NumPlots'};
1454: my $num_data = scalar(@$performance_data)-1;
1455: #
1456: my $current_index;
1457: $table .= "<table>\n";
1458: for (my $i=0;$i<$num_plots;$i++) {
1459: ##
1460: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
1461: ('startdate_'.$i);
1462: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
1463: ('enddate_'.$i);
1464: if (! defined($starttime) || ! defined($endtime)) {
1465: my $sec_in_day = 86400;
1466: my $last_sub_time = &get_time_from_row($performance_data->[-1]);
1467: my ($sday,$smon,$syear) =
1468: (localtime($last_sub_time - $sec_in_day*$i))[3..5];
1469: $starttime = &Time::Local::timelocal(0,0,0,$sday,$smon,$syear);
1470: $endtime = $starttime + $sec_in_day;
1471: if ($i == ($num_plots -1 )) {
1472: $starttime = &get_time_from_row($performance_data->[0]);
1473: }
1474: }
1475: $table .= '<tr><td colspan="4" align="center"><font size="+1">'.
1476: &mt('Data from [_1] to [_2]',
1477: &Apache::lonlocal::locallocaltime($starttime),
1478: &Apache::lonlocal::locallocaltime($endtime)).
1479: '</font></td></tr>'.$/;
1480: my $startdateform = &Apache::lonhtmlcommon::date_setter
1481: ('Statistics','startdate_'.$i,$starttime);
1482: my $enddateform = &Apache::lonhtmlcommon::date_setter
1483: ('Statistics','enddate_'.$i,$endtime);
1484: #
1485: my $begin_index;
1486: my $end_index;
1487: my $j;
1488: while (++$j < scalar(@$performance_data)) {
1489: last if (&get_time_from_row($performance_data->[$j])
1490: > $starttime);
1491: }
1492: $begin_index = $j;
1493: while ($j < scalar(@$performance_data)) {
1494: if (&get_time_from_row($performance_data->[$j]) > $endtime) {
1495: last;
1496: } else {
1497: $j++;
1498: }
1499: }
1500: $end_index = $j;
1501: ##
1502: my ($processed_time_data,$correct,$data_count,$student_count) =
1503: &OR_time_process_data($performance_data,$begin_index,$end_index);
1504: $correct |= 0;
1505: ##
1506: $table .= '<tr><td colspan="4" align="center"><font size="+1">'.
1507: &mt('[_1] submissions from [_2] students, [_3] correct, [_4] incorrect',
1508: $data_count,$student_count,$correct,$data_count-$correct).
1509: '</font></td></tr>'.$/;
1510: my $concept_correct_plot = '';
1511: if ($num_concepts > 1) {
1512: $concept_correct_plot =
1513: &OR_Concept_Time_Analysis($processed_time_data,
1514: $correct,$data_count,$student_count,
1515: $ORdata,$Concepts);
1516: }
1517: my ($foil_correct_plot,$foil_incorrect_plot) =
1518: &OR_Foil_Time_Analysis($processed_time_data,
1519: $correct,$data_count,$student_count,
1520: $ORdata,$Foils,$Concepts);
1521: $table .= '<tr>'.
1522: '<td>'.$concept_correct_plot.'</td>'.
1523: '<td>'.$foil_correct_plot.'</td>'.
1524: '<td>'.$foil_incorrect_plot.'</td>'.
1525: '<td align="left" valign="top">'.$foilkey.'</td></tr>'.$/;
1526: $table .= '<tr><td colspan="4" align="center">'.
1527: &mt('Start time: [_1]',$startdateform).'<br />'.
1528: &mt('End time: [_1]',$enddateform).'</td></tr>'.$/;
1529: $table.= '<tr><td colspan="4"> </td></tr>'.$/;
1530: }
1531: $table .= '</table>';
1532: #
1533: return $table;
1534: }
1535:
1536: sub OR_Foil_Time_Analysis {
1537: my ($processed_time_data,$correct,$data_count,$student_count,
1538: $ORdata,$Foils,$Concepts) = @_;
1539: if ($data_count <= 0) {
1540: return ('<h2>'.&mt('There is no data to plot').'</h2>','');
1541: }
1542: my $analysis_html;
1543: my @plotdata;
1544: my @labels;
1545: foreach my $concept (@{$Concepts}) {
1546: foreach my $foil (@{$concept->{'foils'}}) {
1547: push(@labels,scalar(@labels)+1);
1548: my $total = $processed_time_data->{$foil}->{'_total'};
1549: if ($total == 0) {
1550: push(@{$plotdata[0]},0);
1551: } else {
1552: push(@{$plotdata[0]},
1553: 100 * $processed_time_data->{$foil}->{'_correct'} / $total);
1554: }
1555: my $total_incorrect = $total - $processed_time_data->{$foil}->{'_correct'};
1556: for (my $i=0;$i<scalar(@{$ORdata->{'_Options'}});$i++) {
1557: my $option = $ORdata->{'_Options'}->[$i];
1558: if ($total_incorrect == 0) {
1559: push(@{$plotdata[$i+1]},0);
1560: } else {
1561: push(@{$plotdata[$i+1]},
1562: 100 * $processed_time_data->{$foil}->{$option} / $total_incorrect);
1563: }
1564: }
1565: }
1566: # Put in a blank one
1567: push(@labels,'');
1568: push(@{$plotdata[0]},0);
1569: for (my $i=0;$i<scalar(@{$ORdata->{'_Options'}});$i++) {
1570: push(@{$plotdata[$i+1]},0);
1571: }
1572: }
1573: #
1574: # Create the plot
1575: my $correct_plot = &Apache::loncommon::DrawBarGraph('Correct Statements',
1576: 'Statement Number',
1577: 'Percent Correct',
1578: 100,
1579: $plotcolors,
1580: undef,
1581: $plotdata[0],
1582: {xskip=>1});
1583: for (my $j=0; $j< scalar(@{$plotdata[0]});$j++) {
1584: $plotdata[0]->[$j]=0;
1585: }
1586: my $incorrect_plot =
1587: &Apache::loncommon::DrawBarGraph('Incorrect Statements',
1588: 'Statement Number',
1589: 'Incorrect Option Choice',
1590: 100,
1591: $plotcolors,
1592: undef,
1593: @plotdata,{xskip=>1});
1594: return ($correct_plot,$incorrect_plot);
1595: }
1596:
1597: sub OR_Concept_Time_Analysis {
1598: my ($processed_time_data,$correct,$data_count,$student_count,
1599: $ORdata,$Concepts) = @_;
1600: return '' if ($data_count == 0);
1601: #
1602: # Put the data in plottable form
1603: my @plotdata;
1604: foreach my $concept (@$Concepts) {
1605: my ($total,$correct);
1606: foreach my $foil (@{$concept->{'foils'}}) {
1607: $total += $processed_time_data->{$foil}->{'_total'};
1608: $correct += $processed_time_data->{$foil}->{'_correct'};
1609: }
1610: if ($total == 0) {
1611: push(@plotdata,0);
1612: } else {
1613: push(@plotdata,100 * $correct / $total);
1614: }
1615: }
1616: #
1617: # Create the plot
1618: return &Apache::loncommon::DrawBarGraph('Correct Concepts',
1619: 'Concept Number',
1620: 'Percent Correct',
1621: 100,
1622: $plotcolors,
1623: undef,
1624: \@plotdata,{xskip=>1});
1625: }
1626:
1627: sub OR_time_process_data {
1628: my ($performance_data,$begin_index,$end_index)=@_;
1629: my %processed_time_data;
1630: my %distinct_students;
1631: my ($correct,$data_count);
1632: if (($begin_index == $end_index) &&
1633: ($end_index != scalar(@$performance_data)-1)) {
1634: return undef;
1635: }
1636: # Be sure we include the last one if we are asked for it.
1637: # That we have to correct here (and not when $end_index is
1638: # given a value) should probably be considered a bug.
1639: if ($end_index == scalar(@$performance_data)-1) {
1640: $end_index++;
1641: }
1642: my $count;
1643: for (my $i=$begin_index;$i<$end_index;$i++) {
1644: my $attempt = $performance_data->[$i];
1645: $count++;
1646: next if (! defined($attempt));
1647: my %attempt = &Process_OR_Row($attempt);
1648: $data_count++;
1649: $correct += $attempt{'_correct'};
1650: $distinct_students{$attempt->[&Apache::loncoursedata::RD_student_id()]}++;
1651: while (my ($foilid,$href) = each(%attempt)) {
1652: if (! ref($href)) {
1653: $processed_time_data{$foilid} += $href;
1654: next;
1655: }
1656: while (my ($option,$value) = each(%$href)) {
1657: $processed_time_data{$foilid}->{$option}+=$value;
1658: }
1659: }
1660: }
1661: return (\%processed_time_data,$correct,$data_count,
1662: scalar(keys(%distinct_students)));
1663: }
1664:
1665: sub build_foil_index {
1666: my ($ORdata) = @_;
1667: return if (! exists($ORdata->{'_Foils'}));
1668: my %Foildata = %{$ORdata->{'_Foils'}};
1669: my @Foils = sort(keys(%Foildata));
1670: my %Concepts;
1671: foreach my $foilid (@Foils) {
1672: push(@{$Concepts{$Foildata{$foilid}->{'_Concept'}}},
1673: $foilid);
1674: }
1675: undef(@Foils);
1676: # Having gathered the concept information in a hash, we now translate it
1677: # into an array because we need to be consistent about order.
1678: # Also put the foils in order, too.
1679: my $sortfunction = sub {
1680: my %Numbers = (one => 1,
1681: two => 2,
1682: three => 3,
1683: four => 4,
1684: five => 5,
1685: six => 6,
1686: seven => 7,
1687: eight => 8,
1688: nine => 9,
1689: ten => 10,);
1690: my $a1 = lc($a);
1691: my $b1 = lc($b);
1692: if (exists($Numbers{$a1})) {
1693: $a1 = $Numbers{$a1};
1694: }
1695: if (exists($Numbers{$b1})) {
1696: $b1 = $Numbers{$b1};
1697: }
1698: if (($a1 =~/^\d+$/) && ($b1 =~/^\d+$/)) {
1699: return $a1 <=> $b1;
1700: } else {
1701: return $a1 cmp $b1;
1702: }
1703: };
1704: my @Concepts;
1705: foreach my $concept (sort $sortfunction (keys(%Concepts))) {
1706: if (! defined($Concepts{$concept})) {
1707: $Concepts{$concept}=[];
1708: # next;
1709: }
1710: push(@Concepts,{ name => $concept,
1711: foils => [@{$Concepts{$concept}}]});
1712: push(@Foils,(@{$Concepts{$concept}}));
1713: }
1714: #
1715: # Build up the table of row labels.
1716: my $table = '<table border="1" >'."\n";
1717: if (@Concepts > 1) {
1718: $table .= '<tr>'.
1719: '<th>'.&mt('Concept Number').'</th>'.
1720: '<th>'.&mt('Concept').'</th>'.
1721: '<th>'.&mt('Foil Number').'</th>'.
1722: '<th>'.&mt('Foil Name').'</th>'.
1723: '<th>'.&mt('Foil Text').'</th>'.
1724: '<th>'.&mt('Correct Value').'</th>'.
1725: "</tr>\n";
1726: } else {
1727: $table .= '<tr>'.
1728: '<th>'.&mt('Foil Number').'</th>'.
1729: '<th>'.&mt('Foil Name').'</th>'.
1730: '<th>'.&mt('Foil Text').'</th>'.
1731: '<th>'.&mt('Correct Value').'</th>'.
1732: "</tr>\n";
1733: }
1734: my $conceptindex = 1;
1735: my $foilindex = 1;
1736: foreach my $concept (@Concepts) {
1737: my @FoilsInConcept = @{$concept->{'foils'}};
1738: my $firstfoil = shift(@FoilsInConcept);
1739: if (@Concepts > 1) {
1740: $table .= '<tr>'.
1741: '<td>'.$conceptindex.'</td>'.
1742: '<td>'.&HTML::Entities::encode($concept->{'name'},'<>&"').'</td>'.
1743: '<td>'.$foilindex++.'</td>'.
1744: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'name'},'<>&"').'</td>'.
1745: '<td>'.$Foildata{$firstfoil}->{'text'}.'</td>'.
1746: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'value'},'<>&"').'</td>'.
1747: "</tr>\n";
1748: } else {
1749: $table .= '<tr>'.
1750: '<td>'.$foilindex++.'</td>'.
1751: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'name'},'<>&"').'</td>'.
1752: '<td>'.$Foildata{$firstfoil}->{'text'}.'</td>'.
1753: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'value'},'<>&"').'</td>'.
1754: "</tr>\n";
1755: }
1756: foreach my $foilid (@FoilsInConcept) {
1757: if (@Concepts > 1) {
1758: $table .= '<tr>'.
1759: '<td></td>'.
1760: '<td></td>'.
1761: '<td>'.$foilindex.'</td>'.
1762: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'name'},'<>&"').'</td>'.
1763: '<td>'.$Foildata{$foilid}->{'text'}.'</td>'.
1764: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'value'},'<>&"').'</td>'.
1765: "</tr>\n";
1766: } else {
1767: $table .= '<tr>'.
1768: '<td>'.$foilindex.'</td>'.
1769: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'name'},'<>&"').'</td>'.
1770: '<td>'.$Foildata{$foilid}->{'text'}.'</td>'.
1771: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'value'},'<>&"').'</td>'.
1772: "</tr>\n";
1773: }
1774: } continue {
1775: $foilindex++;
1776: }
1777: } continue {
1778: $conceptindex++;
1779: }
1780: $table .= "</table>\n";
1781: #
1782: # Build option index with color stuff
1783: return ($table,\@Foils,\@Concepts);
1784: }
1785:
1786: sub build_option_index {
1787: my ($ORdata)= @_;
1788: my $table = "<table>\n";
1789: my $optionindex = 0;
1790: my @Rows;
1791: foreach my $option (&mt('correct option chosen'),@{$ORdata->{'_Options'}}) {
1792: my $color = $plotcolors->[$optionindex++];
1793: push (@Rows,
1794: '<tr>'.
1795: '<td bgcolor="'.$color.'">'.
1796: '<font color="'.$color.'">'.('*'x3).'</font>'.'</td>'.
1797: '<td>'.&HTML::Entities::encode($option,'<>&"').'</td>'.
1798: "</tr>\n");
1799: }
1800: shift(@Rows); # Throw away 'correct option chosen' color
1801: $table .= join('',reverse(@Rows));
1802: $table .= "</table>\n";
1803: }
1804:
1805: sub build_foil_key {
1806: my ($foils,$extra_data)= @_;
1807: if (! defined($extra_data)) { $extra_data = {}; }
1808: my $table = "<table>\n";
1809: my $foil_index = 0;
1810: my @rows;
1811: foreach my $foil (&mt('correct foil chosen'),@{$foils}) {
1812: my $color = $plotcolors->[$foil_index++];
1813: push (@rows,
1814: '<tr>'.
1815: '<td bgcolor="'.$color.'" class="key">'.
1816: '<font color="'.$color.'">'.('*'x4).'</font></td>'.
1817: '<td>'.&HTML::Entities::encode($foil,'<>&"').
1818: (' 'x2).$extra_data->{$foil}.'</td>'.
1819: "</tr>\n");
1820: }
1821: shift(@rows); # Throw away 'correct foil chosen' color
1822: $table .= join('',reverse(@rows));
1823: $table .= "</table>\n";
1824: }
1825:
1826: #########################################################
1827: #########################################################
1828: ##
1829: ## Generic Interface Routines
1830: ##
1831: #########################################################
1832: #########################################################
1833: sub CreateInterface {
1834: ##
1835: ## Environment variable initialization
1836: if (! exists($env{'form.AnalyzeOver'})) {
1837: $env{'form.AnalyzeOver'} = 'tries';
1838: }
1839: ##
1840: ## Build the menu
1841: my $Str = '';
1842: $Str .= &Apache::lonhtmlcommon::breadcrumbs('Detailed Problem Analysis');
1843: $Str .= '<table cellspacing="5">'."\n";
1844: $Str .= '<tr>';
1845: $Str .= '<td align="center"><b>'.&mt('Sections').'</b></td>';
1846: $Str .= '<td align="center"><b>'.&mt('Groups').'</b></td>';
1847: $Str .= '<td align="center"><b>'.&mt('Access Status').'</b></td>';
1848: $Str .= '<td align="center"> </td>';
1849: $Str .= '</tr>'."\n";
1850: ##
1851: ##
1852: $Str .= '<tr><td align="center">'."\n";
1853: $Str .= &Apache::lonstatistics::SectionSelect('Section','multiple',5);
1854: $Str .= '</td>';
1855: #
1856: $Str .= '<td align="center">'."\n";
1857: $Str .= &Apache::lonstatistics::GroupSelect('Group','multiple',5);
1858: $Str .= '</td>';
1859: #
1860: $Str .= '<td align="center">';
1861: $Str .= &Apache::lonhtmlcommon::StatusOptions(undef,undef,5);
1862: $Str .= '</td>';
1863: #
1864: ##
1865: ##
1866: $Str .= '<td>';
1867: ##
1868: my $showprob_checkbox =
1869: '<input type="checkbox" name="show_prob" value="true" ';
1870: if ($env{'form.show_prob'} eq 'true') {
1871: $showprob_checkbox .= 'checked ';
1872: }
1873: $showprob_checkbox.= ' />';
1874: $Str.= '<nobr><label>'.
1875: &mt('Show problem [_1]',$showprob_checkbox).
1876: '</label></nobr><br />';
1877: ##
1878: my $analyze_selector = '<select name="AnalyzeOver" >';
1879: $analyze_selector .= '<option value="tries" ';
1880: if (! exists($env{'form.AnalyzeOver'}) ||
1881: $env{'form.AnalyzeOver'} eq 'tries'){
1882: # Default to tries
1883: $analyze_selector .= ' selected ';
1884: }
1885: $analyze_selector .= '>'.&mt('Tries').'</option>';
1886: $analyze_selector .= '<option value="time" ';
1887: $analyze_selector .= ' selected ' if ($env{'form.AnalyzeOver'} eq 'time');
1888: $analyze_selector .= '>'.&mt('Time').'</option>';
1889: $analyze_selector .= '</select>';
1890: $Str .= '<nobr><label>'.
1891: &mt('Analyze Over [_1] [_2]',
1892: $analyze_selector,
1893: &Apache::loncommon::help_open_topic('Analysis_Analyze_Over')).
1894: '</label></nobr><br />'.$/;
1895: ##
1896: my $numplots_selector = '<select name="NumPlots">';
1897: if (! exists($env{'form.NumPlots'})
1898: || $env{'form.NumPlots'} < 1
1899: || $env{'form.NumPlots'} > 20) {
1900: $env{'form.NumPlots'} = 5;
1901: }
1902: foreach my $i (1,2,3,4,5,6,7,8,10,15,20) {
1903: $numplots_selector .= '<option value="'.$i.'" ';
1904: if ($env{'form.NumPlots'} == $i) { $numplots_selector.=' selected '; }
1905: $numplots_selector .= '>'.$i.'</option>';
1906: }
1907: $numplots_selector .= '</select></nobr><br />';
1908: $Str .= '<nobr><label>'.&mt('Number of Plots [_1]',$numplots_selector).
1909: '</label></nobr>';
1910: ##
1911: $Str .= '<nobr><label>'.&mt('Status: [_1]',
1912: '<input type="text" '.
1913: 'name="stats_status" size="60" value="" />'
1914: ).
1915: '</label></nobr>';
1916: $Str .= '</td>';
1917: ##
1918: ##
1919: $Str .= '</tr>'."\n";
1920: $Str .= '</table>'."\n";
1921: return $Str;
1922: }
1923:
1924: #########################################################
1925: #########################################################
1926: ##
1927: ## Misc Option Response functions
1928: ##
1929: #########################################################
1930: #########################################################
1931: sub get_time_from_row {
1932: my ($row) = @_;
1933: if (ref($row)) {
1934: return $row->[&Apache::loncoursedata::RD_timestamp()];
1935: }
1936: return undef;
1937: }
1938:
1939: sub get_tries_from_row {
1940: my ($row) = @_;
1941: if (ref($row)) {
1942: return $row->[&Apache::loncoursedata::RD_tries()];
1943: }
1944: return undef;
1945: }
1946:
1947: sub hashify_attempt {
1948: my ($row) = @_;
1949: my %attempt;
1950: $attempt{'student'} = $row->[&Apache::loncoursedata::RD_sname()];
1951: $attempt{'tries'} = $row->[&Apache::loncoursedata::RD_tries()];
1952: $attempt{'submission'} = &unescape($row->[&Apache::loncoursedata::RD_submission()]);
1953: $attempt{'award'} = $row->[&Apache::loncoursedata::RD_awarddetail()];
1954: $attempt{'timestamp'} = $row->[&Apache::loncoursedata::RD_timestamp()];
1955: return %attempt;
1956: }
1957:
1958: sub Process_OR_Row {
1959: my ($row) = @_;
1960: my %RowData;
1961: # my $student_id = $row->[&Apache::loncoursedata::RD_student_id()];
1962: my $award = $row->[&Apache::loncoursedata::RD_awarddetail()];
1963: my $grading = $row->[&Apache::loncoursedata::RD_response_eval()];
1964: my $submission = $row->[&Apache::loncoursedata::RD_submission()];
1965: my $time = $row->[&Apache::loncoursedata::RD_timestamp()];
1966: # my $tries = $row->[&Apache::loncoursedata::RD_tries()];
1967: return undef if ($award eq 'MISSING_ANSWER');
1968: if (&submission_is_correct($award)) {
1969: $RowData{'_correct'} = 1;
1970: }
1971: $RowData{'_total'} = 1;
1972: my @Foilgrades = split('&',$grading);
1973: my @Foilsubs = split('&',$submission);
1974: for (my $j=0;$j<=$#Foilgrades;$j++) {
1975: my ($foilid,$correct) = split('=',$Foilgrades[$j]);
1976: $foilid = &unescape($foilid);
1977: my (undef,$submission) = split('=',$Foilsubs[$j]);
1978: if ($correct) {
1979: $RowData{$foilid}->{'_correct'}++;
1980: } else {
1981: $submission = &unescape($submission);
1982: $RowData{$foilid}->{$submission}++;
1983: }
1984: $RowData{$foilid}->{'_total'}++;
1985: }
1986: return %RowData;
1987: }
1988:
1989: sub submission_is_correct {
1990: my ($award) = @_;
1991: if ($award =~ /(APPROX_ANS|EXACT_ANS)/) {
1992: return 1;
1993: } else {
1994: return 0;
1995: }
1996: }
1997:
1998: 1;
1999:
2000: __END__
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