1: # The LearningOnline Network with CAPA
2: #
3: # $Id: lonproblemanalysis.pm,v 1.125 2006/05/01 19:29:13 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:
42: my $plotcolors = ['#33ff00',
43: '#0033cc', '#990000', '#aaaa66', '#663399', '#ff9933',
44: '#66ccff', '#ff9999', '#cccc33', '#660000', '#33cc66',
45: ];
46:
47: my @SubmitButtons = ({ name => 'PrevProblemAnalysis',
48: text => 'Previous Problem' },
49: { name => 'ProblemAnalysis',
50: text => 'Analyze Problem Again' },
51: { name => 'NextProblemAnalysis',
52: text => 'Next Problem' },
53: { name => 'break'},
54: { name => 'SelectAnother',
55: text => 'Choose a different Problem' });
56:
57: sub BuildProblemAnalysisPage {
58: my ($r,$c)=@_;
59: #
60: my %Saveable_Parameters = ('Status' => 'scalar',
61: 'Section' => 'array',
62: 'NumPlots' => 'scalar',
63: 'AnalyzeOver' => 'scalar',
64: );
65: &Apache::loncommon::store_course_settings('problem_analysis',
66: \%Saveable_Parameters);
67: &Apache::loncommon::restore_course_settings('problem_analysis',
68: \%Saveable_Parameters);
69: #
70: &Apache::lonstatistics::PrepareClasslist();
71: #
72: $r->print(&CreateInterface());
73: #
74: my @Students = @Apache::lonstatistics::Students;
75: #
76: if (@Students < 1 && exists($env{'form.firstrun'})) {
77: $r->print('<h2>There are no students in the sections selected</h2>');
78: }
79: #
80: my @CacheButtonHTML =
81: &Apache::lonstathelpers::manage_caches($r,'Statistics','stats_status');
82: $r->rflush();
83: #
84: my $problem_types = '(option|radiobutton|numerical)';
85: if (exists($env{'form.problemchoice'}) &&
86: ! exists($env{'form.SelectAnother'})) {
87: foreach my $button (@SubmitButtons) {
88: if ($button->{'name'} eq 'break') {
89: $r->print("<br />\n");
90: } else {
91: $r->print('<input type="submit" name="'.$button->{'name'}.'" '.
92: 'value="'.&mt($button->{'text'}).'" />');
93: $r->print(' 'x5);
94: }
95: }
96: foreach my $html (@CacheButtonHTML) {
97: $r->print($html.(' 'x5));
98: }
99: #
100:
101: # This is commented out pending actual implementation of
102: # CSV and Excel output.
103: #$r->print(&Apache::lonstathelpers::submission_report_form
104: # ('problem_analysis'));
105: #
106: $r->print('<hr />');
107: $r->rflush();
108: #
109: # Determine which problem we are to analyze
110: my $current_problem = &Apache::lonstathelpers::get_target_from_id
111: ($env{'form.problemchoice'});
112: #
113: my ($navmap,$prev,$curr,$next) =
114: &Apache::lonstathelpers::get_prev_curr_next($current_problem,
115: $problem_types,
116: 'response',
117: );
118: if (exists($env{'form.PrevProblemAnalysis'}) && defined($prev)) {
119: $current_problem = $prev;
120: } elsif (exists($env{'form.NextProblemAnalysis'}) && defined($next)) {
121: $current_problem = $next;
122: } else {
123: $current_problem = $curr;
124: }
125: #
126: # Store the current problem choice and send it out in the form
127: $env{'form.problemchoice'} =
128: &Apache::lonstathelpers::make_target_id($current_problem);
129: $r->print('<input type="hidden" name="problemchoice" value="'.
130: $env{'form.problemchoice'}.'" />');
131: #
132: if (! defined($current_problem->{'resource'})) {
133: $r->print('resource is undefined');
134: } else {
135: my $resource = $current_problem->{'resource'};
136: $r->print('<h1>'.$resource->compTitle.'</h1>');
137: $r->print('<h3>'.$resource->src.'</h3>');
138: $r->print('<h4>'.&Apache::lonstatistics::section_and_enrollment_description().'</h4>');
139: if ($env{'form.show_prob'} eq 'true') {
140: $r->print(&Apache::lonstathelpers::render_resource($resource));
141: }
142: $r->rflush();
143: my %Data = &Apache::lonstathelpers::get_problem_data
144: ($resource->src);
145: my $problem_data = $Data{$current_problem->{'part'}.
146: '.'.
147: $current_problem->{'respid'}};
148: if ($current_problem->{'resptype'} eq 'option') {
149: &OptionResponseAnalysis($r,$current_problem,
150: $problem_data,
151: \@Students);
152: } elsif ($current_problem->{'resptype'} eq 'radiobutton') {
153: &radio_response_analysis($r,$current_problem,
154: $problem_data,
155: \@Students);
156: } elsif ($current_problem->{'resptype'} eq 'numerical') {
157: &numerical_response_analysis($r,$current_problem,
158: $problem_data,\@Students);
159: } else {
160: $r->print('<h2>Analysis of '.$current_problem->{'resptype'}.' is not supported</h2>');
161: }
162: }
163: $r->print('<hr />');
164: } else {
165: my $submit_button = '<input type="submit" '.
166: 'name="ProblemAnalysis" value="'.
167: &mt('Analyze Problem').'" />';
168: $r->print($submit_button);
169: $r->print(' 'x5);
170: $r->print('<h3>'.&mt('Please select a problem to analyze').'</h3>');
171: $r->print(&Apache::lonstathelpers::problem_selector($problem_types,
172: $submit_button));
173: }
174: }
175:
176: #########################################################
177: #########################################################
178: ##
179: ## Numerical Response Routines
180: ##
181: #########################################################
182: #########################################################
183: sub numerical_response_analysis {
184: my ($r,$problem,$problem_analysis,$students) = @_;
185: my $c = $r->connection();
186: #
187: if ($env{'form.AnalyzeOver'} !~ /^(tries|time)$/) {
188: $r->print('Bad request');
189: }
190: #
191: my ($resource,$partid,$respid) = ($problem->{'resource'},
192: $problem->{'part'},
193: $problem->{'respid'});
194: # Gather student data
195: my $response_data = &Apache::loncoursedata::get_response_data
196: ([&Apache::lonstatistics::get_selected_sections()],
197: $Apache::lonstatistics::enrollment_status,
198: $resource->symb,$respid);
199: #
200: $problem_analysis->{'answercomputed'} = 1;
201: if ($problem_analysis->{'answercomputed'}) {
202: my $answers =
203: &Apache::lonstathelpers::GetStudentAnswers($r,$problem,$students,
204: 'Statistics',
205: 'stats_status');
206: $r->print(&numerical_one_dimensional_plot($r,600,150,$answers));
207: }
208: #
209: if (ref($response_data) ne 'ARRAY') {
210: $r->print('<h2>'.
211: &mt('There is no submission data for this resource').
212: '</h2>');
213: return;
214: }
215: my $analysis_html = '<table>';
216: for (my $plot_num = 1;$plot_num<=$env{'form.NumPlots'};$plot_num++) {
217: my $restriction_function;
218: my $header_message;
219: my $stats_message;
220: my $post_message; # passed through &mt sooner rather than later
221: my $no_data_message;
222: my @extra_data;
223: if ($env{'form.AnalyzeOver'} eq 'tries') {
224: $restriction_function = sub {($_[0]->{'tries'} == $plot_num?1:0)};
225: $header_message = 'Attempt [_1]';
226: $stats_message =
227: '[_1] submissions, [_2] correct, [_3] incorrect';
228: $post_message = '';
229: $no_data_message = 'No data exists for attempt [_1]';
230: } else {
231: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
232: ('startdate_'.$plot_num);
233: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
234: ('enddate_'.$plot_num);
235: ($starttime,$endtime) = &ensure_start_end_times
236: ($starttime,$endtime,
237: &get_time_from_row($response_data->[0]),
238: &get_time_from_row($response_data->[-1]),
239: $plot_num);
240: $header_message = 'Data from [_2] to [_3]';
241: $extra_data[0] = &Apache::lonlocal::locallocaltime($starttime);
242: $extra_data[1] = &Apache::lonlocal::locallocaltime($endtime);
243: #
244: $stats_message =
245: '[_1] submissions from [_4] students, [_2] correct, [_3] incorrect';
246: #
247: $post_message =
248: &mt('Start time: [_1]',
249: &Apache::lonhtmlcommon::date_setter
250: ('Statistics','startdate_'.$plot_num,$starttime)).
251: '<br />'.
252: &mt('End time: [_1]',
253: &Apache::lonhtmlcommon::date_setter
254: ('Statistics','enddate_'.$plot_num,$endtime));
255: $restriction_function =
256: sub {
257: my $t = $_[0]->{'timestamp'};
258: if ($t >= $starttime && $t < $endtime) {
259: return 1;
260: } else {
261: return 0;
262: }
263: };
264: $no_data_message = 'No data for [_2] to [_3]';
265: }
266: #
267: my ($correct,$answers) =
268: &numerical_determine_answers($r,$resource,$partid,
269: $respid,$students);
270: if ($c->aborted()) { return; };
271: #
272: my ($responses,$stats) =
273: &numerical_classify_responses($response_data,$correct,
274: $restriction_function);
275: if ($stats->{'submission_count'} == 0) {
276: $analysis_html.=
277: '<tr><td colspan="2"><font size="+1"><b>'.
278: &mt($no_data_message,$plot_num,@extra_data).
279: '</b></font></td></tr>';
280: } else {
281: $analysis_html.=
282: '<tr><td colspan="2" align="center"><font size="+1"><b>'.
283: &mt($header_message,$plot_num,@extra_data).
284: '</b></font></td></tr>'.
285: '<tr><td colspan="2" align="center">'.
286: &mt($stats_message,
287: $stats->{'submission_count'},
288: $stats->{'correct_count'},
289: $stats->{'incorrect_count'},
290: $stats->{'students'},
291: @extra_data).
292: '</td></tr>'.
293: '<tr>'.'<td valign="top" align="center">'.
294: &numerical_plot_percent($r,$responses,$stats).'</td>'.
295: '<td align="center" valign="top">'.
296: &numerical_plot_differences($r,$responses,$stats).'</td>'.
297: '</tr>';
298: }
299: if ($post_message ne '') {
300: $analysis_html .=
301: '<tr><td colspan="2">'.$post_message.'</td></tr>';
302: }
303: }
304: $analysis_html.='</table>';
305: $r->print($analysis_html);
306: #
307: return;
308: }
309:
310: sub numerical_plot_percent {
311: my ($r,$responses,$stats) = @_;
312: #
313: my $total = $stats->{'submission_count'};
314: return '' if ($total == 0);
315: my $max_bins = 50;
316: my $lowest_percent = $stats->{'min_percent'};
317: my $highest_percent = $stats->{'max_percent'};
318: my $percent_spread = $highest_percent - $lowest_percent;
319: foreach (qw/20 30 40 50 100 200/) {
320: if ($percent_spread < $_) {
321: $highest_percent =$_/2;
322: last;
323: }
324: }
325: my $bin_size = 1;
326: foreach (qw/0.01 0.05 0.1 0.5 1 2 5 10 20 25 50 100/) {
327: if ($lowest_percent/2 < $_){
328: $bin_size = $_;
329: last;
330: }
331: }
332: my @bins;
333: for (my $bin = -$highest_percent;$bin<0;$bin+=$bin_size) {
334: push (@bins,$bin);
335: }
336: for (my $bin = 0; $bin<$highest_percent;$bin+=$bin_size) {
337: push (@bins,$bin);
338: }
339: push(@bins,$highest_percent);
340: #
341: my @correct;
342: my @incorrect;
343: my @count;
344: while (my ($ans,$submissions) = each(%$responses)) {
345: while (my ($submission,$counts) = each(%$submissions)) {
346: my ($correct_count,$incorrect_count) = @$counts;
347: my $scaled_value =
348: ($ans) ? 100*($submission-$ans)/abs($ans)
349: : 0;
350: if ($scaled_value < $bins[0]) {
351: $bins[0]=$scaled_value -1;
352: }
353: my $bin;
354: for ($bin=0;$bin<$#bins;$bin++) {
355: last if ($bins[$bin]>$scaled_value);
356: }
357: $correct[$bin-1]+=$correct_count;
358: $incorrect[$bin-1]+=$incorrect_count;
359: $count[$bin-1]+=$correct_count+$incorrect_count;
360: }
361: }
362: #
363: my @plot_correct = @correct;
364: my @plot_incorrect = @incorrect;
365: my $max;
366: for (my $i=0;$i<$#bins;$i++) {
367: $plot_correct[$i] *= 100/$total;
368: $plot_incorrect[$i] *= 100/$total;
369: if (! defined($max) ||
370: $max < $plot_correct[$i]+$plot_incorrect[$i] ) {
371: $max = $plot_correct[$i]+$plot_incorrect[$i];
372: }
373: }
374: foreach (qw/1 5 10 15 20 25 30 40 50 75 100/) {
375: if ($max <$_) { $max = $_; last; }
376: }
377: #
378: my $title = &mt('Percent Difference');
379: my @labels = (1..scalar(@bins)-1);
380: my $graph = &Apache::loncommon::DrawBarGraph
381: ($title,'Percent Difference from Correct','Percent of Answers',
382: $max,['#33FF00','#FF3300'],\@labels,\@plot_correct,\@plot_incorrect,
383: {xskip=>1});
384: #
385: my $table = $graph.$/.
386: &numerical_bin_table(\@bins,\@labels,\@incorrect,\@correct,\@count).$/;
387: return $table;
388: }
389:
390: sub numerical_plot_differences {
391: my ($r,$responses,$stats) = @_;
392: #
393: my $total = $stats->{'submission_count'};
394: return '' if ($total == 0);
395: my $max_bins = 21;
396: my $min_bin_size = $stats->{'min_abs'};
397: my $low_bin = $stats->{'lowest_ans'}-$stats->{'max_bin_size'};
398: my $high_bin = $stats->{'highest_ans'}+$stats->{'max_bin_size'};
399: if ($high_bin > 0 && $low_bin > -$high_bin) {
400: $low_bin = -$high_bin;
401: } elsif ($low_bin < 0 && $high_bin < -$low_bin) {
402: $high_bin = -$low_bin;
403: }
404: if (!$min_bin_size ||
405: ($high_bin -$low_bin)/$min_bin_size * 2 > $max_bins) {
406: $min_bin_size = abs($high_bin - $low_bin) / $max_bins * 2;
407: }
408: my @bins;
409: for (my $num = $low_bin;$num <= $high_bin;$num+=($min_bin_size/2)) {
410: push(@bins,$num);
411: }
412: #
413: my @correct;
414: my @incorrect;
415: my @count;
416: while (my ($ans,$submissions) = each(%$responses)) {
417: while (my ($submission,$counts) = each(%$submissions)) {
418: my ($correct_count,$incorrect_count) = @$counts;
419: my $scaled_value = $submission-$ans;
420: if ($scaled_value < $bins[0]) {
421: $bins[0]=$scaled_value-1;
422: }
423: my $bin=0;
424: for ($bin=0;$bin<$#bins;$bin++) {
425: last if ($bins[$bin]>$scaled_value);
426: }
427: $correct[$bin-1]+=$correct_count;
428: $incorrect[$bin-1]+=$incorrect_count;
429: $count[$bin-1]+=$correct_count+$incorrect_count;
430: }
431: }
432: my @plot_correct = @correct;
433: my @plot_incorrect = @incorrect;
434: my $max;
435: for (my $i=0;$i<=$#bins;$i++) {
436: $plot_correct[$i] *= 100/$total;
437: $plot_incorrect[$i] *= 100/$total;
438: if (! defined($max) ||
439: $max < $plot_correct[$i]+$plot_incorrect[$i] ) {
440: $max = $plot_correct[$i]+$plot_incorrect[$i];
441: }
442: }
443: foreach (qw/1 5 10 15 20 25 30 40 50 75 100/) {
444: if ($max <$_) { $max = $_; last; }
445: }
446: #
447: my $title = &mt('Difference between submission and correct');
448: my @labels = (1..scalar(@bins)-1);
449: my $graph = &Apache::loncommon::DrawBarGraph
450: ($title,'Difference from Correct','Percent of Answers',
451: $max,['#33FF00','#FF3300'],\@labels,\@plot_correct,\@plot_incorrect,
452: {xskip=>1});
453: #
454: my $table = $graph.$/.
455: &numerical_bin_table(\@bins,\@labels,\@incorrect,\@correct,\@count).$/;
456: return $table;
457: }
458:
459: sub numerical_classify_responses {
460: my ($full_row_data,$correct,$function) = @_;
461: my %submission_data;
462: my %students;
463: my %stats;
464: my $max=0;
465: foreach my $row (@$full_row_data) {
466: my %subm = &hashify_attempt($row);
467: if (ref($correct) eq 'HASH') {
468: my $s_correct = $correct->{$subm{'student'}};
469: $subm{'correct'} = $s_correct->{'answer'};
470: foreach my $item ('unit','ans_low','ans_high') {
471: $subm{$item} = $s_correct->{$item};
472: }
473: } else { # This probably never happens....
474: $subm{'correct'} = $correct->{'answer'};
475: $subm{'unit'} = $correct->{'unit'};
476: }
477: #
478: my $abs_low =abs($subm{'correct'}-$subm{'ans_low'});
479: my $abs_high=abs($subm{'correct'}-$subm{'ans_high'});
480: if (! defined($stats{'min_abs'}) ||
481: $stats{'min_abs'} > $abs_low) {
482: $stats{'min_abs'} = $abs_low;
483: }
484: if ($stats{'min_abs'} > $abs_high) {
485: $stats{'min_abs'} = $abs_high;
486: }
487: if (! defined($stats{'max_abs'}) ||
488: $stats{'max_abs'} < $abs_low) {
489: $stats{'max_abs'} = $abs_low;
490: }
491: if ($stats{'max_abs'} < $abs_high) {
492: $stats{'max_abs'} = $abs_high;
493: }
494: my $low_percent;
495: my $high_percent;
496: if (defined($subm{'correct'}) && $subm{'correct'} != 0) {
497: $low_percent = 100 * abs($abs_low / $subm{'correct'});
498: $high_percent = 100 * abs($abs_high / $subm{'correct'});
499: }
500: if (! defined($stats{'min_percent'}) ||
501: $stats{'min_percent'} > $low_percent) {
502: $stats{'min_percent'} = $low_percent;
503: }
504: if ($stats{'min_percent'} > $high_percent) {
505: $stats{'min_percent'} = $high_percent;
506: }
507: if (! defined($stats{'max_percent'}) ||
508: $stats{'max_percent'} < $low_percent) {
509: $stats{'max_percent'} = $low_percent;
510: }
511: if ($stats{'max_percent'} < $high_percent) {
512: $stats{'max_percent'} = $high_percent;
513: }
514: if (! defined($stats{'lowest_ans'}) ||
515: $stats{'lowest_ans'} > $subm{'correct'}) {
516: $stats{'lowest_ans'} = $subm{'correct'};
517: }
518: if (! defined($stats{'highest_ans'}) ||
519: $stats{'highest_ans'} < $subm{'correct'}) {
520: $stats{'highest_ans'} = $subm{'correct'};
521: }
522: #
523: $subm{'submission'} =~ s/=\d+\s*$//;
524: if (&$function(\%subm)) {
525: my $scaled = '1';
526: my ($sname,$sdom) = split(':',$subm{'student'});
527: my ($myunit,$mysub) = ($subm{'unit'},$subm{'submission'});
528: my $result =
529: &capa::caparesponse_get_real_response($myunit,
530: $mysub,
531: \$scaled);
532: # &Apache::lonnet::logthis('scaled = '.$scaled.' result ='.$result);
533: next if (! defined($scaled));
534: # next if ($result ne '6');
535: my $submission = $scaled;
536: $students{$subm{'student'}}++;
537: $stats{'submission_count'}++;
538: if (&numerical_submission_is_correct($subm{'award'})) {
539: $stats{'correct_count'}++;
540: $submission_data{$subm{'correct'}}->{$submission}->[0]++;
541: } elsif (&numerical_submission_is_incorrect($subm{'award'})) {
542: $stats{'incorrect_count'}++;
543: $submission_data{$subm{'correct'}}->{$submission}->[1]++;
544: }
545: }
546: }
547: $stats{'correct_count'} |= 0;
548: $stats{'incorrect_count'} |= 0;
549: $stats{'students'}=scalar(keys(%students));
550: return (\%submission_data,\%stats);
551: }
552:
553: sub numerical_submission_is_correct {
554: my ($award) = @_;
555: if ($award =~ /^(APPROX_ANS|EXACT_ANS)$/) {
556: return 1;
557: } else {
558: return 0;
559: }
560: }
561:
562: sub numerical_submission_is_incorrect {
563: my ($award) = @_;
564: if ($award =~ /^(INCORRECT)$/) {
565: return 1;
566: } else {
567: return 0;
568: }
569: }
570:
571: sub numerical_bin_table {
572: my ($bins,$labels,$incorrect,$correct,$count)=@_;
573: my $table =
574: '<table><tr><th>'.&mt('Bar').'</th>'.
575: '<th colspan="3">'.&mt('Range').'</th>'.
576: '<th>'.&mt('Incorrect').'</th>'.
577: '<th>'.&mt('Correct').'</th>'.
578: '<th>'.&mt('Count').'</th>'.
579: '</tr>'.$/;
580: for (my $i=0;$i<scalar(@{$bins}-1);$i++) {
581: my $lownum = $bins->[$i];
582: if ($i == 0) { $lownum = '-∞'; }
583: my $highnum = $bins->[$i+1];
584: if ($i == scalar(@{$bins})-2) { $highnum = '∞'; }
585: $table .=
586: '<tr>'.
587: '<td>'.$labels->[$i].'</td>'.
588: '<td align="right">'.$lownum.'</td>'.
589: '<td> - </td>'.
590: '<td align="right">'.$highnum.'</td>'.
591: '<td align="right">'.$incorrect->[$i].'</td>'.
592: '<td align="right">'.$correct->[$i].'</td>'.
593: '<td align="right">'.$count->[$i].'</td>'.
594: '</tr>'.$/;
595: }
596: $table.= '</table>';
597: return $table;
598: }
599:
600: sub numerical_determine_answers {
601: my ($r,$resource,$partid,$respid,$students)=@_;
602: my $c = $r->connection();
603: #
604: my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin
605: ($r,'Student Answer Compilation Status',
606: 'Student Answer Compilation Progress', scalar(@$students),
607: 'inline',undef,'Statistics','stats_status');
608: #
609: # Read in the cache (if it exists) before we start timing things.
610: &Apache::lonstathelpers::ensure_proper_cache($resource->{'symb'});
611: #
612: my $correct;
613: my %answers;
614: foreach my $student (@$students) {
615: last if ($c->aborted());
616: my $sname = $student->{'username'};
617: my $sdom = $student->{'domain'};
618: # analyze problem
619: my $analysis =
620: &Apache::lonstathelpers::analyze_problem_as_student($resource,
621: $sname,
622: $sdom);
623: # make the key
624: my $key = $partid.'.'.$respid;
625: foreach my $item ('answer','unit','ans_high','ans_low') {
626: $correct->{$sname.':'.$sdom}->{$item} =
627: $analysis->{$key.'.'.$item}->[0];
628: }
629: $answers{$analysis->{$key.'.answer'}->[0]}++;
630: &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
631: &mt('last student'));
632: }
633: &Apache::lonstathelpers::write_analysis_cache();
634: &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
635: return ($correct,\%answers);
636: }
637:
638: #
639: # Inputs: $r, $width, $height, $data
640: # $n = number of students
641: # $data = hashref of $answer => $frequency pairs
642: sub numerical_one_dimensional_plot {
643: my ($r,$width,$height,$data)=@_;
644: #
645: # Compute data -> image scaling factors
646: my $max_y = 0;
647: my $min_x = undef;
648: my $max_x = undef;
649: my $n = 0;
650: while (my ($answer,$count) = each(%$data)) {
651: $n+=$count;
652: $max_y = $count if ($max_y < $count);
653: if (! defined($min_x) || $answer < $min_x) {
654: $min_x = $answer;
655: }
656: if (! defined($max_x) || $answer > $max_x) {
657: $max_x = $answer;
658: }
659: }
660: #
661: my $min_max_difference = $max_x - $min_x;
662: if (! defined($min_max_difference) || $min_max_difference == 0) {
663: $min_max_difference = 1;
664: }
665: my $h_scale = ($width-10)/$min_max_difference;
666: #
667: my $ticscale = 5;
668: if ($max_y * $ticscale > $height/2) {
669: $ticscale = int($height/2/$max_y);
670: $ticscale = 1 if ($ticscale < 1);
671: }
672: #
673: # Create the plot
674: my $plot =
675: qq{<drawimage width="$width" height="$height" bgcolor="transparent" >};
676: while (my ($answer,$count) = each(%$data)) {
677: my $xloc = 5+$h_scale*($answer - $min_x);
678: my $top = $height/2-$count*$ticscale;
679: my $bottom = $height/2+$count*$ticscale;
680: $plot .= &line($xloc,$top,$xloc,$bottom,'888888',1);
681: }
682: #
683: # Put the scale on last to ensure it is on top of the data.
684: if ($min_x < 0 && $max_x > 0) {
685: my $circle_x = 5+$h_scale*abs($min_x); # '0' in data coordinates
686: my $r = 4;
687: $plot .= &line(5,$height/2,$circle_x-$r,$height/2,'000000',1);
688: $plot .= &circle($circle_x,$height/2,$r+1,'000000');
689: $plot .= &line($circle_x+$r,$height/2,$width-5,$height/2,'000000',1);
690: } else {
691: $plot .= &line(5,$height/2,$width-5,$height/2,'000000',1);
692: }
693: $plot .= '</drawimage>';
694: my $plotresult = &Apache::lonxml::xmlparse($r,'web',$plot);
695: my $result = '<table>'.
696: '<tr><td colspan="3" align="center">'.
697: '<font size="+2">'.&mt('Distribution of correct answers').'</font>'.
698: '<br />'.&mt('[_1] students, [_2] distinct correct answers',
699: $n,scalar(keys(%$data))).
700: '<br />'.&mt('Maximum number of coinciding values: [_1]',$max_y).
701: '</td></tr>'.
702: '<tr>'.
703: '<td valign="center">'.$min_x.'</td>'.
704: '<td>'.$plotresult.'</td>'.
705: '<td valign="center">'.$max_x.'</td>'.
706: '</tr>'.
707: '</table>';
708: return $result;
709: }
710:
711: ##
712: ## Helper subroutines for <drawimage>.
713: ## These should probably go somewhere more suitable soon.
714: sub line {
715: my ($x1,$y1,$x2,$y2,$color,$thickness) = @_;
716: return qq{<line x1="$x1" y1="$y1" x2="$x2" y2="$y2" color="$color" thickness="$thickness" />};
717: }
718:
719: sub text {
720: my ($x,$y,$color,$text,$font,$direction) = @_;
721: if (! defined($font) || $font !~ /^(tiny|small|medium|large|giant)$/) {
722: $font = 'medium';
723: }
724: if (! defined($direction) || $direction ne 'vertical') {
725: $direction = '';
726: }
727: return qq{<text x="$x" y="$y" color="$color" font="$font" direction="$direction" >$text</text>};
728: }
729:
730: sub rectangle {
731: my ($x1,$y1,$x2,$y2,$color,$thickness,$filled) = @_;
732: return qq{<rectangle x1="$x1" y1="$y1" x2="$x2" y2="$y2" color="$color" thickness="$thickness" filled="$filled" />};
733: }
734:
735: sub arc {
736: my ($x,$y,$width,$height,$start,$end,$color,$thickness,$filled)=@_;
737: return qq{<arc x="$x" y="$y" width="$width" height="$height" start="$start" end="$end" color="$color" thickness="$thickness" filled="$filled" />};
738: }
739:
740: sub circle {
741: my ($x,$y,$radius,$color,$thickness,$filled)=@_;
742: return &arc($x,$y,$radius,$radius,0,360,$color,$thickness,$filled);
743: }
744:
745: #########################################################
746: #########################################################
747: ##
748: ## Radio Response Routines
749: ##
750: #########################################################
751: #########################################################
752: sub radio_response_analysis {
753: my ($r,$problem,$problem_analysis,$students) = @_;
754: #
755: if ($env{'form.AnalyzeOver'} !~ /^(tries|time)$/) {
756: $r->print('Bad request');
757: }
758: #
759: my ($resource,$partid,$respid) = ($problem->{'resource'},
760: $problem->{'part'},
761: $problem->{'respid'});
762: #
763: my $analysis_html;
764: my $foildata = $problem_analysis->{'_Foils'};
765: my ($table,$foils,$concepts) = &build_foil_index($problem_analysis);
766: if (! defined($concepts)) {
767: $concepts = [];
768: }
769: #
770: my %true_foils;
771: my $num_true = 0;
772: if (! $problem_analysis->{'answercomputed'}) {
773: foreach my $foil (@$foils) {
774: if ($foildata->{$foil}->{'value'} eq 'true') {
775: $true_foils{$foil}++;
776: }
777: }
778: $num_true = scalar(keys(%true_foils));
779: }
780: #
781: $analysis_html .= $table;
782: # Gather student data
783: my $response_data = &Apache::loncoursedata::get_response_data
784: ([&Apache::lonstatistics::get_selected_sections()],
785: $Apache::lonstatistics::enrollment_status,
786: $resource->symb,$respid);
787: my $correct; # either a hash reference or a scalar
788: if ($problem_analysis->{'answercomputed'} || scalar(@$concepts) > 1) {
789: # This takes a while for large classes...
790: &Apache::lonstathelpers::GetStudentAnswers($r,$problem,$students,
791: 'Statistics',
792: 'stats_status');
793: foreach my $student (@$students) {
794: my ($idx,@remainder) = split('&',$student->{'answer'});
795: my ($answer) = ($remainder[$idx]=~/^(.*)=([^=]*)$/);
796: $correct->{$student->{'username'}.':'.$student->{'domain'}}=
797: &Apache::lonnet::unescape($answer);
798: }
799: } else {
800: foreach my $foil (keys(%$foildata)) {
801: if ($foildata->{$foil}->{'value'} eq 'true') {
802: $correct = $foildata->{$foil}->{'name'};
803: }
804: }
805: }
806: #
807: if (! defined($response_data) || ref($response_data) ne 'ARRAY' ) {
808: $analysis_html = '<h2>'.
809: &mt('There is no submission data for this resource').
810: '</h2>';
811: $r->print($analysis_html);
812: return;
813: }
814: #
815: $analysis_html.='<table>';
816: for (my $plot_num = 1;$plot_num<=$env{'form.NumPlots'};$plot_num++) {
817: # classify data ->correct foil -> selected foil
818: my ($restriction_function,
819: $correct_foil_title,$incorrect_foil_title,
820: $pre_graph_text,$post_graph_text,
821: $no_data_text,@extra_data);
822: if ($env{'form.AnalyzeOver'} eq 'tries') {
823: $restriction_function = sub {($_[0]->{'tries'} == $plot_num?1:0)};
824: $correct_foil_title = 'Attempt '.$plot_num;
825: $incorrect_foil_title = 'Attempt '.$plot_num;
826: $pre_graph_text =
827: 'Attempt [_1], [_2] submissions, [_3] correct, [_4] incorrect';
828: $post_graph_text = '';
829: $no_data_text = 'No data exists for attempt [_1]';
830: } elsif ($env{'form.AnalyzeOver'} eq 'time') {
831: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
832: ('startdate_'.$plot_num);
833: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
834: ('enddate_'.$plot_num);
835: ($starttime,$endtime) = &ensure_start_end_times
836: ($starttime,$endtime,
837: &get_time_from_row($response_data->[0]),
838: &get_time_from_row($response_data->[-1]),
839: $plot_num);
840: $pre_graph_text =
841: 'Data from [_6] to [_7]<br /> [_2] submissions from [_5] students, [_3] correct, [_4] incorrect';
842: $extra_data[0] = &Apache::lonlocal::locallocaltime($starttime);
843: $extra_data[1] = &Apache::lonlocal::locallocaltime($endtime);
844: #
845: $post_graph_text =
846: &mt('Start time: [_1]',
847: &Apache::lonhtmlcommon::date_setter
848: ('Statistics','startdate_'.$plot_num,$starttime)).
849: '<br />'.
850: &mt('End time: [_1]',
851: &Apache::lonhtmlcommon::date_setter
852: ('Statistics','enddate_'.$plot_num,$endtime));
853: $restriction_function =
854: sub {
855: my $t = $_[0]->{'timestamp'};
856: if ($t >= $starttime && $t < $endtime) {
857: return 1;
858: } else {
859: return 0;
860: }
861: };
862: $no_data_text = 'No data for [_5] to [_6]';
863: }
864: my $foil_choice_data =
865: &classify_response_data($response_data,$correct,
866: $restriction_function);
867: # &Apache::lonstathelpers::log_hash_ref($foil_choice_data);
868: my $answers;
869: if (ref($correct)) {
870: my %tmp;
871: foreach my $foil (values(%$correct)) {
872: $tmp{$foil}++;
873: }
874: $answers = [keys(%tmp)];
875: } else {
876: $answers = [$correct];
877: }
878: # Concept Plot
879: my $concept_plot = '';
880: if (scalar(@$concepts) > 1) {
881: $concept_plot = &RR_concept_plot($concepts,$foil_choice_data,
882: 'Correct Concepts');
883: }
884: # % Choosing plot
885: my $choice_plot = &RR_create_percent_selected_plot
886: ($concepts,$foils,$foil_choice_data,$correct_foil_title);
887: # for each correct foil, how did they mark it? (stacked bar graph)
888: my ($stacked_plot,$count_by_foil);
889: if ($problem_analysis->{'answercomputed'} || $num_true > 1) {
890: ($stacked_plot,$count_by_foil) =
891: &RR_create_stacked_selection_plot($foils,$foil_choice_data,
892: $incorrect_foil_title,
893: \%true_foils);
894: }
895: #
896: if ($concept_plot ne '' ||
897: $choice_plot ne '' ||
898: $stacked_plot ne '') {
899: my $correct = $foil_choice_data->{'_correct'};
900: $correct |= 0;
901: my $incorrect = $foil_choice_data->{'_count'}-$correct;
902: $analysis_html.= '<tr><td colspan="4" align="center">'.
903: '<font size="+1">'.
904: &mt($pre_graph_text,
905: $plot_num,$foil_choice_data->{'_count'},
906: $correct,
907: $incorrect,
908: $foil_choice_data->{'_students'},
909: @extra_data).
910: '</td></tr>'.$/;
911: $analysis_html.=
912: '<tr>'.
913: '<td>'.$concept_plot.'</td>'.
914: '<td>'.$choice_plot.'</td>';
915: if ($stacked_plot ne '') {
916: $analysis_html .=
917: '<td>'.$stacked_plot.'</td>'.
918: '<td>'.&build_foil_key($foils,$count_by_foil).'</td>';
919: } else {
920: $analysis_html .= ('<td></td>'x2);
921: }
922: $analysis_html.='</tr>'.$/;
923: if (defined($post_graph_text)) {
924: $analysis_html.= '<tr><td colspan="4" align="center">'.
925: $post_graph_text.'</td></tr>'.$/;
926: }
927: } elsif ($no_data_text ne '') {
928: $analysis_html.='<tr><td colspan="4" align="center">'.
929: &mt($no_data_text,
930: $plot_num,$foil_choice_data->{'_count'},
931: $correct,
932: $foil_choice_data->{'_count'}-$correct,
933: @extra_data);
934: if (defined($post_graph_text)) {
935: $analysis_html.='<br />'.$post_graph_text;
936: }
937: $analysis_html.='</td></tr>'.$/;
938: }
939: } # end of loop for plots
940: $analysis_html.='</table>';
941: $r->print($analysis_html);
942: }
943:
944: sub ensure_start_end_times {
945: my ($start,$end,$first,$last,$plot_num) = @_;
946: if (! defined($start) || ! defined($end)) {
947: my $sec_in_day = 86400;
948: my ($sday,$smon,$syear) =
949: (localtime($last - $sec_in_day*($plot_num-1)))[3..5];
950: $start = &Time::Local::timelocal(0,0,0,$sday,$smon,$syear);
951: $end = $start + $sec_in_day;
952: if ($plot_num == $env{'form.NumPlots'}) {
953: $start = $first;
954: }
955: }
956: return ($start,$end);
957: }
958:
959: sub RR_concept_plot {
960: my ($concepts,$foil_data,$title) = @_;
961: #
962: my %correct_by_concept;
963: my %incorrect_by_concept;
964: my %true;
965: foreach my $concept (@$concepts) {
966: foreach my $foil (@{$concept->{'foils'}}) {
967: next if (! exists($foil_data->{$foil}));
968: foreach my $choice (keys(%{$foil_data->{$foil}})) {
969: if ($choice eq $foil) {
970: $correct_by_concept{$concept->{'name'}} +=
971: $foil_data->{$foil}->{$choice};
972: } else {
973: $incorrect_by_concept{$concept->{'name'}} +=
974: $foil_data->{$foil}->{$choice};
975: }
976: }
977: }
978: }
979: #
980: # need arrays for incorrect and correct because we want to use different
981: # colors for them
982: my @correct;
983: #
984: my $total =0;
985: for (my $i=0;$i<scalar(@$concepts);$i++) {
986: my $concept = $concepts->[$i];
987: $correct[$i] = $correct_by_concept{$concept->{'name'}};
988: $total += $correct_by_concept{$concept->{'name'}}+
989: $incorrect_by_concept{$concept->{'name'}};
990: }
991: if ($total == 0) { return ''; };
992: for (my $i=0;$i<=$#correct;$i++) {
993: $correct[$i] = sprintf('%0f',$correct[$i]/$total*100);
994: }
995: my $xlabel = 'concept';
996: my $plot= &Apache::loncommon::DrawBarGraph($title,
997: $xlabel,
998: 'Percent Choosing',
999: 100,
1000: ['#33ff00','#ff3300'],
1001: undef,
1002: \@correct);
1003: return $plot;
1004: }
1005:
1006: sub RR_create_percent_selected_plot {
1007: my ($concepts,$foils,$foil_data,$title) = @_;
1008: #
1009: if ($foil_data->{'_count'} == 0) { return ''; };
1010: my %correct_selections;
1011: my %incorrect_selections;
1012: foreach my $foil (@$foils) {
1013: # foil_data has format $foil_data->{true_foil}->{selected foil}=count
1014: next if (! exists($foil_data->{$foil}));
1015: while (my ($f,$count)= each(%{$foil_data->{$foil}})) {
1016: if ($f eq $foil) {
1017: $correct_selections{$foil} += $count;
1018: } else {
1019: $incorrect_selections{$f} += $count;
1020: }
1021: }
1022: }
1023: #
1024: # need arrays for incorrect and correct because we want to use different
1025: # colors for them
1026: my @correct;
1027: my @incorrect;
1028: #
1029: my $total = $foil_data->{'_count'};
1030: for (my $i=0;$i<scalar(@$foils);$i++) {
1031: my $foil = $foils->[$i];
1032: $correct[$i] = $correct_selections{$foil};
1033: $incorrect[$i] = $incorrect_selections{$foil};
1034: }
1035: for (my $i=0;$i<=$#correct;$i++) {
1036: $correct[$i] = sprintf('%2f',$correct[$i]/$total*100);
1037: }
1038: for (my $i=0;$i<=$#incorrect;$i++) {
1039: $incorrect[$i] = sprintf('%2f',$incorrect[$i]/$total*100);
1040: }
1041: #
1042: # Put a blank in the data sets between concepts, if there are concepts
1043: my @labels;
1044: if (defined($concepts) && scalar(@$concepts) > 1) {
1045: my @new_correct;
1046: my @new_incorrect;
1047: my $foil_count = 0;
1048: foreach my $concept (@$concepts) {
1049: foreach (@{$concept->{'foils'}}) {
1050: push(@new_correct, $correct[$foil_count]);
1051: push(@new_incorrect,$incorrect[$foil_count]);
1052: push(@labels,++$foil_count);
1053: }
1054: push(@new_correct,'');
1055: push(@new_incorrect,'');
1056: push(@labels,'');
1057: }
1058: @correct = @new_correct;
1059: @incorrect = @new_incorrect;
1060: } else {
1061: @labels = (1 .. scalar(@correct));
1062: }
1063: #
1064: my $xlabel = 'foil chosen';
1065: my $plot= &Apache::loncommon::DrawBarGraph($title,
1066: $xlabel,
1067: 'Percent Choosing',
1068: 100,
1069: ['#33ff00','#ff3300'],
1070: \@labels,
1071: \@correct,
1072: \@incorrect);
1073: return $plot;
1074: }
1075:
1076: sub RR_create_stacked_selection_plot {
1077: my ($foils,$foil_data,$title,$true_foils)=@_;
1078: #
1079: my @dataset; # array of array refs - multicolor rows $datasets[row]->[col]
1080: my @labels;
1081: my $count;
1082: my %column; # maps foil name to column in @datasets
1083: for (my $i=0;$i<scalar(@$foils);$i++) {
1084: my $foil = $foils->[$i];
1085: if (defined($true_foils) && scalar(keys(%$true_foils)) > 0 ) {
1086: next if (! $true_foils->{$foil} );
1087: push(@labels,$i+1);
1088: } else {
1089: next if (! exists($foil_data->{$foil}));
1090: push(@labels,$i+1);
1091: }
1092: next if (! exists($foil_data->{$foils->[$i]}));
1093: $column{$foil}= $count++;
1094: for (my $j=0;$j<scalar(@$foils);$j++) {
1095: my $value = 0;
1096: if ($i != $j ) {
1097: $value += $foil_data->{$foil}->{$foils->[$j]};
1098: }
1099: $dataset[$j]->[$column{$foil}]=$value;
1100: }
1101: }
1102: #
1103: return '' if (! scalar(keys(%column)));
1104: #
1105: my $grand_total = 0;
1106: my %count_per_foil;
1107: while (my ($foil,$bar) = each (%column)) {
1108: my $bar_total = 0;
1109: for (my $j=0;$j<scalar(@dataset);$j++) {
1110: $bar_total += $dataset[$j]->[$bar];
1111: }
1112: next if ($bar_total == 0);
1113: for (my $j=0;$j<scalar(@dataset);$j++) {
1114: $dataset[$j]->[$bar] =
1115: sprintf('%2f',$dataset[$j]->[$bar]/$bar_total * 100);
1116: }
1117: $count_per_foil{$foil}=' ( '.$bar_total.' )';
1118: $grand_total += $bar_total;
1119: }
1120: if ($grand_total == 0) {
1121: return ('',undef);
1122: }
1123: my @empty_row = ();
1124: foreach (@{$dataset[0]}) {
1125: push(@empty_row,0);
1126: }
1127: #
1128: my $graph = &Apache::loncommon::DrawBarGraph
1129: ($title,'Correct Foil','foils chosen Incorrectly',
1130: 100,$plotcolors,\@labels,\@empty_row,@dataset);
1131: return ($graph,\%count_per_foil);
1132: }
1133:
1134:
1135: #########################################################
1136: #########################################################
1137: ##
1138: ## Misc routines
1139: ##
1140: #########################################################
1141: #########################################################
1142:
1143: # if $correct is a hash ref, it is assumed to be indexed by student names.
1144: # the values are assumed to be hash refs with a key of 'answer'.
1145: sub classify_response_data {
1146: my ($full_row_data,$correct,$function) = @_;
1147: my %submission_data;
1148: my %students;
1149: my $max=0;
1150: foreach my $row (@$full_row_data) {
1151: my %subm = &hashify_attempt($row);
1152: if (ref($correct) eq 'HASH') {
1153: $subm{'correct'} = $correct->{$subm{'student'}};
1154: } else {
1155: $subm{'correct'} = $correct;
1156: }
1157: $subm{'submission'} =~ s/=\d+\s*$//;
1158: if (&$function(\%subm)) {
1159: $students{$subm{'student'}}++;
1160: $submission_data{'_count'}++;
1161: if (&submission_is_correct($subm{'award'})) {
1162: $submission_data{'_correct'}++;
1163: }
1164:
1165: if($max<++$submission_data{$subm{'correct'}}->{$subm{'submission'}}) {
1166: $max=$submission_data{$subm{'correct'}}->{$subm{'submission'}};
1167: }
1168: }
1169: }
1170: $submission_data{'_max'} = $max;
1171: $submission_data{'_students'}=scalar(keys(%students));
1172: return \%submission_data;
1173: }
1174:
1175:
1176: #########################################################
1177: #########################################################
1178: ##
1179: ## Option Response Routines
1180: ##
1181: #########################################################
1182: #########################################################
1183: sub OptionResponseAnalysis {
1184: my ($r,$problem,$problem_data,$Students) = @_;
1185: my ($resource,$respid) = ($problem->{'resource'},
1186: $problem->{'respid'});
1187: # Note: part data is not needed.
1188: my $PerformanceData = &Apache::loncoursedata::get_response_data
1189: ([&Apache::lonstatistics::get_selected_sections()],
1190: $Apache::lonstatistics::enrollment_status,
1191: $resource->symb,$respid);
1192: if (! defined($PerformanceData) ||
1193: ref($PerformanceData) ne 'ARRAY' ) {
1194: $r->print('<h2>'.
1195: &mt('There is no student data for this problem.').
1196: '</h2>');
1197: } else {
1198: $r->rflush();
1199: if ($env{'form.AnalyzeOver'} eq 'tries') {
1200: my $analysis_html = &OR_tries_analysis($r,
1201: $PerformanceData,
1202: $problem_data);
1203: $r->print($analysis_html);
1204: $r->rflush();
1205: } elsif ($env{'form.AnalyzeOver'} eq 'time') {
1206: my $analysis_html = &OR_time_analysis($PerformanceData,
1207: $problem_data);
1208: $r->print($analysis_html);
1209: $r->rflush();
1210: } else {
1211: $r->print('<h2>'.
1212: &mt('The analysis you have selected is '.
1213: 'not supported at this time').
1214: '</h2>');
1215: }
1216: }
1217: }
1218:
1219: #########################################################
1220: #
1221: # Option Response: tries Analysis
1222: #
1223: #########################################################
1224: sub OR_tries_analysis {
1225: my ($r,$PerformanceData,$ORdata) = @_;
1226: my $mintries = 1;
1227: my $maxtries = $env{'form.NumPlots'};
1228: my ($table,$Foils,$Concepts) = &build_foil_index($ORdata);
1229: if (! defined($Concepts)) {
1230: $Concepts = [];
1231: }
1232: my %response_data = &OR_analyze_by_tries($r,$PerformanceData,
1233: $mintries,$maxtries);
1234: my $analysis = '';
1235: #
1236: # Compute the data necessary to make the plots
1237: my @foil_plot;
1238: my @concept_data;
1239: for (my $j=0;$j<=scalar(@$Concepts);$j++) {
1240: my $concept = $Concepts->[$j];
1241: foreach my $foilid (@{$concept->{'foils'}}) {
1242: for (my $try=$mintries;$try<=$maxtries;$try++) {
1243: # concept analysis data
1244: $concept_data[$j]->[$try]->{'_correct'} +=
1245: $response_data{$foilid}->[$try]->{'_correct'};
1246: $concept_data[$j]->[$try]->{'_total'} +=
1247: $response_data{$foilid}->[$try]->{'_total'};
1248: #
1249: # foil analysis data
1250: if ($response_data{$foilid}->[$try]->{'_total'} == 0) {
1251: push(@{$foil_plot[$try]->{'_correct'}},0);
1252: } else {
1253: push(@{$foil_plot[$try]->{'_correct'}},
1254: 100*$response_data{$foilid}->[$try]->{'_correct'}/
1255: $response_data{$foilid}->[$try]->{'_total'});
1256: }
1257: foreach my $option (@{$ORdata->{'_Options'}}) {
1258: push(@{$foil_plot[$try]->{'_total'}},
1259: $response_data{$foilid}->[$try]->{'_total'});
1260: if ($response_data{$foilid}->[$try]->{'_total'} == 0) {
1261: push (@{$foil_plot[$try]->{$option}},0);
1262: } else {
1263: if ($response_data{$foilid}->[$try]->{'_total'} ==
1264: $response_data{$foilid}->[$try]->{'_correct'}) {
1265: push(@{$foil_plot[$try]->{$option}},0);
1266: } else {
1267: push (@{$foil_plot[$try]->{$option}},
1268: 100 *
1269: $response_data{$foilid}->[$try]->{$option} /
1270: ($response_data{$foilid}->[$try]->{'_total'}
1271: -
1272: $response_data{$foilid}->[$try]->{'_correct'}
1273: ));
1274: }
1275: }
1276: } # End of foreach my $option
1277: }
1278: } # End of foreach my $foilid
1279: } # End of concept loops
1280: #
1281: # Build a table for the plots
1282: my $analysis_html = "<br /><table>\n";
1283: my $optionkey = &build_option_index($ORdata);
1284: my $num_concepts = 1;
1285: if (defined($Concepts)) { $num_concepts = scalar(@$Concepts); }
1286: #
1287: for (my $try=$mintries;$try<=$maxtries;$try++) {
1288: if (! defined($response_data{'_total'}->[$try]) ||
1289: $response_data{'_total'}->[$try] == 0) {
1290: if ($try > 1) {
1291: $analysis_html.= '<tr><td align="center" colspan="4"><b>'.
1292: &mt('None of the selected students attempted the problem more than [_1] times.',$try-1).
1293: '</b></td></tr>';
1294: } else {
1295: $analysis_html.= '<tr><td colspan="4" align="center"><b>'.
1296: &mt('None of the selected students have attempted the problem').'</b></td></tr>';
1297: }
1298: last;
1299: }
1300: my $concept_graph='';
1301: if ($num_concepts > 1) {
1302: #
1303: # Create concept plot
1304: my @concept_plot_data;
1305: for (my $j=0;$j<=$#concept_data;$j++) {
1306: my $total = $concept_data[$j]->[$try]->{'_total'};
1307: if ($total == 0) {
1308: $concept_plot_data[$j] = 0;
1309: } else {
1310: $concept_plot_data[$j] = 100 *
1311: sprintf('%0.3f',
1312: $concept_data[$j]->[$try]->{'_correct'} /
1313: $total);
1314: }
1315: }
1316: #
1317: $concept_graph = &Apache::loncommon::DrawBarGraph
1318: ('Correct Concepts','Concept Number','Percent Correct',
1319: 100,$plotcolors,undef,\@concept_plot_data,{xskip=>1});
1320: }
1321: #
1322: # Create Foil Plots
1323: my $data_count = $response_data{'_total'}->[$try];
1324: my $correct = $response_data{'_correct'}->[$try];
1325: $correct |= 0;
1326: my @Datasets;
1327: foreach my $option ('_correct',@{$ORdata->{'_Options'}}) {
1328: next if (! exists($foil_plot[$try]->{$option}));
1329: push(@Datasets,$foil_plot[$try]->{$option});
1330: }
1331: #
1332: # Put a blank in the data set between concepts
1333: for (my $set =0;$set<=$#Datasets;$set++) {
1334: my @Data = @{$Datasets[$set]};
1335: my $idx = 0;
1336: foreach my $concept (@{$Concepts}) {
1337: foreach my $foilid (@{$concept->{'foils'}}) {
1338: $Datasets[$set]->[$idx++]=shift(@Data);
1339: }
1340: if ($concept->{'name'} ne $Concepts->[-1]->{'name'}) {
1341: $Datasets[$set]->[$idx++] = 0;
1342: }
1343: }
1344: }
1345: #
1346: # Set up the labels needed for the bar graph
1347: my @Labels;
1348: my $idx = 1;
1349: foreach my $concept (@{$Concepts}) {
1350: foreach my $foilid (@{$concept->{'foils'}}) {
1351: push(@Labels,$idx++);
1352: }
1353: push(@Labels,'');
1354: }
1355: #
1356: my $correct_graph = &Apache::loncommon::DrawBarGraph
1357: ('Correct Statements','Statement','% Answered Correct',
1358: 100,$plotcolors,\@Labels,$Datasets[0],{xskip=>1});
1359:
1360: #
1361: #
1362: next if (! defined($Datasets[0]));
1363: for (my $i=0; $i< scalar(@{$Datasets[0]});$i++) {
1364: $Datasets[0]->[$i]=0;
1365: }
1366: my $count = $response_data{'_total'}->[$try] -
1367: $response_data{'_correct'}->[$try];
1368: my $incorrect_graph = &Apache::loncommon::DrawBarGraph
1369: ('Incorrect Statements','Statement','% Chosen Incorrectly',
1370: 100,$plotcolors,\@Labels,@Datasets,{xskip=>1});
1371: $analysis_html.=
1372: '<tr><td colspan="4" align="center">'.
1373: '<font size="+1">'.
1374: &mt('Attempt [_1], [_2] submissions, [_3] correct, [_4] incorrect',
1375: $try,$data_count,$correct,$data_count-$correct).
1376: '</font>'.'</td></tr>'.$/.
1377: '<tr>'.
1378: '<td>'.$concept_graph.'</td>'.
1379: '<td>'.$correct_graph.'</td>'.
1380: '<td>'.$incorrect_graph.'</td>'.
1381: '<td>'.$optionkey.'<td>'.
1382: '</tr>'.$/;
1383: }
1384: $analysis_html .= "</table>\n";
1385: $table .= $analysis_html;
1386: return $table;
1387: }
1388:
1389: sub OR_analyze_by_tries {
1390: my ($r,$PerformanceData,$mintries,$maxtries) = @_;
1391: my %Trydata;
1392: $mintries = 1 if (! defined($mintries) || $mintries < 1);
1393: $maxtries = $mintries if (! defined($maxtries) || $maxtries < $mintries);
1394: my @students;
1395: foreach my $row (@$PerformanceData) {
1396: next if (! defined($row));
1397: my $tries = &get_tries_from_row($row);
1398: my %Row = &Process_OR_Row($row);
1399: next if (! %Row);
1400: my $student_id = $row->[&Apache::loncoursedata::RD_student_id()];
1401: $students[$tries]->{$student_id}++;
1402: while (my ($foilid,$href) = each(%Row)) {
1403: if (! ref($href)) {
1404: $Trydata{$foilid}->[$tries] += $href;
1405: next;
1406: }
1407: while (my ($option,$value) = each(%$href)) {
1408: $Trydata{$foilid}->[$tries]->{$option}+=$value;
1409: }
1410: }
1411: }
1412: for (my $try=$mintries;$try<=$maxtries;$try++) {
1413: $Trydata{'_studentcount'}->[$try] = scalar(keys(%{$students[$try]}));
1414: }
1415: return %Trydata;
1416: }
1417:
1418: #########################################################
1419: #
1420: # Option Response: Time Analysis
1421: #
1422: #########################################################
1423: sub OR_time_analysis {
1424: my ($performance_data,$ORdata) = @_;
1425: my ($table,$Foils,$Concepts) = &build_foil_index($ORdata);
1426: my $foilkey = &build_option_index($ORdata);
1427: my $num_concepts = 1;
1428: if (defined($Concepts)) { $num_concepts = scalar(@$Concepts); }
1429: #
1430: if ($num_concepts < 2) {
1431: $table = '<h3>'.
1432: &mt('Not enough data for concept analysis. '.
1433: 'Performing Foil Analysis').
1434: '</h3>'.$table;
1435: }
1436: #
1437: my $num_plots = $env{'form.NumPlots'};
1438: my $num_data = scalar(@$performance_data)-1;
1439: #
1440: my $current_index;
1441: $table .= "<table>\n";
1442: for (my $i=0;$i<$num_plots;$i++) {
1443: ##
1444: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
1445: ('startdate_'.$i);
1446: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
1447: ('enddate_'.$i);
1448: if (! defined($starttime) || ! defined($endtime)) {
1449: my $sec_in_day = 86400;
1450: my $last_sub_time = &get_time_from_row($performance_data->[-1]);
1451: my ($sday,$smon,$syear) =
1452: (localtime($last_sub_time - $sec_in_day*$i))[3..5];
1453: $starttime = &Time::Local::timelocal(0,0,0,$sday,$smon,$syear);
1454: $endtime = $starttime + $sec_in_day;
1455: if ($i == ($num_plots -1 )) {
1456: $starttime = &get_time_from_row($performance_data->[0]);
1457: }
1458: }
1459: $table .= '<tr><td colspan="4" align="center"><font size="+1">'.
1460: &mt('Data from [_1] to [_2]',
1461: &Apache::lonlocal::locallocaltime($starttime),
1462: &Apache::lonlocal::locallocaltime($endtime)).
1463: '</font></td></tr>'.$/;
1464: my $startdateform = &Apache::lonhtmlcommon::date_setter
1465: ('Statistics','startdate_'.$i,$starttime);
1466: my $enddateform = &Apache::lonhtmlcommon::date_setter
1467: ('Statistics','enddate_'.$i,$endtime);
1468: #
1469: my $begin_index;
1470: my $end_index;
1471: my $j;
1472: while (++$j < scalar(@$performance_data)) {
1473: last if (&get_time_from_row($performance_data->[$j])
1474: > $starttime);
1475: }
1476: $begin_index = $j;
1477: while ($j < scalar(@$performance_data)) {
1478: if (&get_time_from_row($performance_data->[$j]) > $endtime) {
1479: last;
1480: } else {
1481: $j++;
1482: }
1483: }
1484: $end_index = $j;
1485: ##
1486: my ($processed_time_data,$correct,$data_count,$student_count) =
1487: &OR_time_process_data($performance_data,$begin_index,$end_index);
1488: $correct |= 0;
1489: ##
1490: $table .= '<tr><td colspan="4" align="center"><font size="+1">'.
1491: &mt('[_1] submissions from [_2] students, [_3] correct, [_4] incorrect',
1492: $data_count,$student_count,$correct,$data_count-$correct).
1493: '</font></td></tr>'.$/;
1494: my $concept_correct_plot = '';
1495: if ($num_concepts > 1) {
1496: $concept_correct_plot =
1497: &OR_Concept_Time_Analysis($processed_time_data,
1498: $correct,$data_count,$student_count,
1499: $ORdata,$Concepts);
1500: }
1501: my ($foil_correct_plot,$foil_incorrect_plot) =
1502: &OR_Foil_Time_Analysis($processed_time_data,
1503: $correct,$data_count,$student_count,
1504: $ORdata,$Foils,$Concepts);
1505: $table .= '<tr>'.
1506: '<td>'.$concept_correct_plot.'</td>'.
1507: '<td>'.$foil_correct_plot.'</td>'.
1508: '<td>'.$foil_incorrect_plot.'</td>'.
1509: '<td align="left" valign="top">'.$foilkey.'</td></tr>'.$/;
1510: $table .= '<tr><td colspan="4" align="center">'.
1511: &mt('Start time: [_1]',$startdateform).'<br />'.
1512: &mt('End time: [_1]',$enddateform).'</td></tr>'.$/;
1513: $table.= '<tr><td colspan="4"> </td></tr>'.$/;
1514: }
1515: $table .= '</table>';
1516: #
1517: return $table;
1518: }
1519:
1520: sub OR_Foil_Time_Analysis {
1521: my ($processed_time_data,$correct,$data_count,$student_count,
1522: $ORdata,$Foils,$Concepts) = @_;
1523: if ($data_count <= 0) {
1524: return ('<h2>'.&mt('There is no data to plot').'</h2>','');
1525: }
1526: my $analysis_html;
1527: my @plotdata;
1528: my @labels;
1529: foreach my $concept (@{$Concepts}) {
1530: foreach my $foil (@{$concept->{'foils'}}) {
1531: push(@labels,scalar(@labels)+1);
1532: my $total = $processed_time_data->{$foil}->{'_total'};
1533: if ($total == 0) {
1534: push(@{$plotdata[0]},0);
1535: } else {
1536: push(@{$plotdata[0]},
1537: 100 * $processed_time_data->{$foil}->{'_correct'} / $total);
1538: }
1539: my $total_incorrect = $total - $processed_time_data->{$foil}->{'_correct'};
1540: for (my $i=0;$i<scalar(@{$ORdata->{'_Options'}});$i++) {
1541: my $option = $ORdata->{'_Options'}->[$i];
1542: if ($total_incorrect == 0) {
1543: push(@{$plotdata[$i+1]},0);
1544: } else {
1545: push(@{$plotdata[$i+1]},
1546: 100 * $processed_time_data->{$foil}->{$option} / $total_incorrect);
1547: }
1548: }
1549: }
1550: # Put in a blank one
1551: push(@labels,'');
1552: push(@{$plotdata[0]},0);
1553: for (my $i=0;$i<scalar(@{$ORdata->{'_Options'}});$i++) {
1554: push(@{$plotdata[$i+1]},0);
1555: }
1556: }
1557: #
1558: # Create the plot
1559: my $correct_plot = &Apache::loncommon::DrawBarGraph('Correct Statements',
1560: 'Statement Number',
1561: 'Percent Correct',
1562: 100,
1563: $plotcolors,
1564: undef,
1565: $plotdata[0],
1566: {xskip=>1});
1567: for (my $j=0; $j< scalar(@{$plotdata[0]});$j++) {
1568: $plotdata[0]->[$j]=0;
1569: }
1570: my $incorrect_plot =
1571: &Apache::loncommon::DrawBarGraph('Incorrect Statements',
1572: 'Statement Number',
1573: 'Incorrect Option Choice',
1574: 100,
1575: $plotcolors,
1576: undef,
1577: @plotdata,{xskip=>1});
1578: return ($correct_plot,$incorrect_plot);
1579: }
1580:
1581: sub OR_Concept_Time_Analysis {
1582: my ($processed_time_data,$correct,$data_count,$student_count,
1583: $ORdata,$Concepts) = @_;
1584: return '' if ($data_count == 0);
1585: #
1586: # Put the data in plottable form
1587: my @plotdata;
1588: foreach my $concept (@$Concepts) {
1589: my ($total,$correct);
1590: foreach my $foil (@{$concept->{'foils'}}) {
1591: $total += $processed_time_data->{$foil}->{'_total'};
1592: $correct += $processed_time_data->{$foil}->{'_correct'};
1593: }
1594: if ($total == 0) {
1595: push(@plotdata,0);
1596: } else {
1597: push(@plotdata,100 * $correct / $total);
1598: }
1599: }
1600: #
1601: # Create the plot
1602: return &Apache::loncommon::DrawBarGraph('Correct Concepts',
1603: 'Concept Number',
1604: 'Percent Correct',
1605: 100,
1606: $plotcolors,
1607: undef,
1608: \@plotdata,{xskip=>1});
1609: }
1610:
1611: sub OR_time_process_data {
1612: my ($performance_data,$begin_index,$end_index)=@_;
1613: my %processed_time_data;
1614: my %distinct_students;
1615: my ($correct,$data_count);
1616: if (($begin_index == $end_index) &&
1617: ($end_index != scalar(@$performance_data)-1)) {
1618: return undef;
1619: }
1620: # Be sure we include the last one if we are asked for it.
1621: # That we have to correct here (and not when $end_index is
1622: # given a value) should probably be considered a bug.
1623: if ($end_index == scalar(@$performance_data)-1) {
1624: $end_index++;
1625: }
1626: my $count;
1627: for (my $i=$begin_index;$i<$end_index;$i++) {
1628: my $attempt = $performance_data->[$i];
1629: $count++;
1630: next if (! defined($attempt));
1631: my %attempt = &Process_OR_Row($attempt);
1632: $data_count++;
1633: $correct += $attempt{'_correct'};
1634: $distinct_students{$attempt->[&Apache::loncoursedata::RD_student_id()]}++;
1635: while (my ($foilid,$href) = each(%attempt)) {
1636: if (! ref($href)) {
1637: $processed_time_data{$foilid} += $href;
1638: next;
1639: }
1640: while (my ($option,$value) = each(%$href)) {
1641: $processed_time_data{$foilid}->{$option}+=$value;
1642: }
1643: }
1644: }
1645: return (\%processed_time_data,$correct,$data_count,
1646: scalar(keys(%distinct_students)));
1647: }
1648:
1649: sub build_foil_index {
1650: my ($ORdata) = @_;
1651: return if (! exists($ORdata->{'_Foils'}));
1652: my %Foildata = %{$ORdata->{'_Foils'}};
1653: my @Foils = sort(keys(%Foildata));
1654: my %Concepts;
1655: foreach my $foilid (@Foils) {
1656: push(@{$Concepts{$Foildata{$foilid}->{'_Concept'}}},
1657: $foilid);
1658: }
1659: undef(@Foils);
1660: # Having gathered the concept information in a hash, we now translate it
1661: # into an array because we need to be consistent about order.
1662: # Also put the foils in order, too.
1663: my $sortfunction = sub {
1664: my %Numbers = (one => 1,
1665: two => 2,
1666: three => 3,
1667: four => 4,
1668: five => 5,
1669: six => 6,
1670: seven => 7,
1671: eight => 8,
1672: nine => 9,
1673: ten => 10,);
1674: my $a1 = lc($a);
1675: my $b1 = lc($b);
1676: if (exists($Numbers{$a1})) {
1677: $a1 = $Numbers{$a1};
1678: }
1679: if (exists($Numbers{$b1})) {
1680: $b1 = $Numbers{$b1};
1681: }
1682: if (($a1 =~/^\d+$/) && ($b1 =~/^\d+$/)) {
1683: return $a1 <=> $b1;
1684: } else {
1685: return $a1 cmp $b1;
1686: }
1687: };
1688: my @Concepts;
1689: foreach my $concept (sort $sortfunction (keys(%Concepts))) {
1690: if (! defined($Concepts{$concept})) {
1691: $Concepts{$concept}=[];
1692: # next;
1693: }
1694: push(@Concepts,{ name => $concept,
1695: foils => [@{$Concepts{$concept}}]});
1696: push(@Foils,(@{$Concepts{$concept}}));
1697: }
1698: #
1699: # Build up the table of row labels.
1700: my $table = '<table border="1" >'."\n";
1701: if (@Concepts > 1) {
1702: $table .= '<tr>'.
1703: '<th>'.&mt('Concept Number').'</th>'.
1704: '<th>'.&mt('Concept').'</th>'.
1705: '<th>'.&mt('Foil Number').'</th>'.
1706: '<th>'.&mt('Foil Name').'</th>'.
1707: '<th>'.&mt('Foil Text').'</th>'.
1708: '<th>'.&mt('Correct Value').'</th>'.
1709: "</tr>\n";
1710: } else {
1711: $table .= '<tr>'.
1712: '<th>'.&mt('Foil Number').'</th>'.
1713: '<th>'.&mt('Foil Name').'</th>'.
1714: '<th>'.&mt('Foil Text').'</th>'.
1715: '<th>'.&mt('Correct Value').'</th>'.
1716: "</tr>\n";
1717: }
1718: my $conceptindex = 1;
1719: my $foilindex = 1;
1720: foreach my $concept (@Concepts) {
1721: my @FoilsInConcept = @{$concept->{'foils'}};
1722: my $firstfoil = shift(@FoilsInConcept);
1723: if (@Concepts > 1) {
1724: $table .= '<tr>'.
1725: '<td>'.$conceptindex.'</td>'.
1726: '<td>'.&HTML::Entities::encode($concept->{'name'},'<>&"').'</td>'.
1727: '<td>'.$foilindex++.'</td>'.
1728: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'name'},'<>&"').'</td>'.
1729: '<td>'.$Foildata{$firstfoil}->{'text'}.'</td>'.
1730: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'value'},'<>&"').'</td>'.
1731: "</tr>\n";
1732: } else {
1733: $table .= '<tr>'.
1734: '<td>'.$foilindex++.'</td>'.
1735: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'name'},'<>&"').'</td>'.
1736: '<td>'.$Foildata{$firstfoil}->{'text'}.'</td>'.
1737: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'value'},'<>&"').'</td>'.
1738: "</tr>\n";
1739: }
1740: foreach my $foilid (@FoilsInConcept) {
1741: if (@Concepts > 1) {
1742: $table .= '<tr>'.
1743: '<td></td>'.
1744: '<td></td>'.
1745: '<td>'.$foilindex.'</td>'.
1746: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'name'},'<>&"').'</td>'.
1747: '<td>'.$Foildata{$foilid}->{'text'}.'</td>'.
1748: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'value'},'<>&"').'</td>'.
1749: "</tr>\n";
1750: } else {
1751: $table .= '<tr>'.
1752: '<td>'.$foilindex.'</td>'.
1753: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'name'},'<>&"').'</td>'.
1754: '<td>'.$Foildata{$foilid}->{'text'}.'</td>'.
1755: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'value'},'<>&"').'</td>'.
1756: "</tr>\n";
1757: }
1758: } continue {
1759: $foilindex++;
1760: }
1761: } continue {
1762: $conceptindex++;
1763: }
1764: $table .= "</table>\n";
1765: #
1766: # Build option index with color stuff
1767: return ($table,\@Foils,\@Concepts);
1768: }
1769:
1770: sub build_option_index {
1771: my ($ORdata)= @_;
1772: my $table = "<table>\n";
1773: my $optionindex = 0;
1774: my @Rows;
1775: foreach my $option (&mt('correct option chosen'),@{$ORdata->{'_Options'}}) {
1776: my $color = $plotcolors->[$optionindex++];
1777: push (@Rows,
1778: '<tr>'.
1779: '<td bgcolor="'.$color.'">'.
1780: '<font color="'.$color.'">'.('*'x3).'</font>'.'</td>'.
1781: '<td>'.&HTML::Entities::encode($option,'<>&"').'</td>'.
1782: "</tr>\n");
1783: }
1784: shift(@Rows); # Throw away 'correct option chosen' color
1785: $table .= join('',reverse(@Rows));
1786: $table .= "</table>\n";
1787: }
1788:
1789: sub build_foil_key {
1790: my ($foils,$extra_data)= @_;
1791: if (! defined($extra_data)) { $extra_data = {}; }
1792: my $table = "<table>\n";
1793: my $foil_index = 0;
1794: my @rows;
1795: foreach my $foil (&mt('correct foil chosen'),@{$foils}) {
1796: my $color = $plotcolors->[$foil_index++];
1797: push (@rows,
1798: '<tr>'.
1799: '<td bgcolor="'.$color.'" class="key">'.
1800: '<font color="'.$color.'">'.('*'x4).'</font></td>'.
1801: '<td>'.&HTML::Entities::encode($foil,'<>&"').
1802: (' 'x2).$extra_data->{$foil}.'</td>'.
1803: "</tr>\n");
1804: }
1805: shift(@rows); # Throw away 'correct foil chosen' color
1806: $table .= join('',reverse(@rows));
1807: $table .= "</table>\n";
1808: }
1809:
1810: #########################################################
1811: #########################################################
1812: ##
1813: ## Generic Interface Routines
1814: ##
1815: #########################################################
1816: #########################################################
1817: sub CreateInterface {
1818: ##
1819: ## Environment variable initialization
1820: if (! exists($env{'form.AnalyzeOver'})) {
1821: $env{'form.AnalyzeOver'} = 'tries';
1822: }
1823: ##
1824: ## Build the menu
1825: my $Str = '';
1826: $Str .= &Apache::lonhtmlcommon::breadcrumbs('Detailed Problem Analysis');
1827: $Str .= '<table cellspacing="5">'."\n";
1828: $Str .= '<tr>';
1829: $Str .= '<td align="center"><b>'.&mt('Sections').'</b></td>';
1830: $Str .= '<td align="center"><b>'.&mt('Enrollment Status').'</b></td>';
1831: $Str .= '<td align="center"> </td>';
1832: $Str .= '</tr>'."\n";
1833: ##
1834: ##
1835: $Str .= '<tr><td align="center">'."\n";
1836: $Str .= &Apache::lonstatistics::SectionSelect('Section','multiple',5);
1837: $Str .= '</td>';
1838: #
1839: $Str .= '<td align="center">';
1840: $Str .= &Apache::lonhtmlcommon::StatusOptions(undef,undef,5);
1841: $Str .= '</td>';
1842: #
1843: ##
1844: ##
1845: $Str .= '<td>';
1846: ##
1847: my $showprob_checkbox =
1848: '<input type="checkbox" name="show_prob" value="true" ';
1849: if ($env{'form.show_prob'} eq 'true') {
1850: $showprob_checkbox .= 'checked ';
1851: }
1852: $showprob_checkbox.= ' />';
1853: $Str.= '<nobr><label>'.
1854: &mt('Show problem [_1]',$showprob_checkbox).
1855: '</label></nobr><br />';
1856: ##
1857: my $analyze_selector = '<select name="AnalyzeOver" >';
1858: $analyze_selector .= '<option value="tries" ';
1859: if (! exists($env{'form.AnalyzeOver'}) ||
1860: $env{'form.AnalyzeOver'} eq 'tries'){
1861: # Default to tries
1862: $analyze_selector .= ' selected ';
1863: }
1864: $analyze_selector .= '>'.&mt('Tries').'</option>';
1865: $analyze_selector .= '<option value="time" ';
1866: $analyze_selector .= ' selected ' if ($env{'form.AnalyzeOver'} eq 'time');
1867: $analyze_selector .= '>'.&mt('Time').'</option>';
1868: $analyze_selector .= '</select>';
1869: $Str .= '<nobr><label>'.
1870: &mt('Analyze Over [_1] [_2]',
1871: $analyze_selector,
1872: &Apache::loncommon::help_open_topic('Analysis_Analyze_Over')).
1873: '</label></nobr><br />'.$/;
1874: ##
1875: my $numplots_selector = '<select name="NumPlots">';
1876: if (! exists($env{'form.NumPlots'})
1877: || $env{'form.NumPlots'} < 1
1878: || $env{'form.NumPlots'} > 20) {
1879: $env{'form.NumPlots'} = 5;
1880: }
1881: foreach my $i (1,2,3,4,5,6,7,8,10,15,20) {
1882: $numplots_selector .= '<option value="'.$i.'" ';
1883: if ($env{'form.NumPlots'} == $i) { $numplots_selector.=' selected '; }
1884: $numplots_selector .= '>'.$i.'</option>';
1885: }
1886: $numplots_selector .= '</select></nobr><br />';
1887: $Str .= '<nobr><label>'.&mt('Number of Plots [_1]',$numplots_selector).
1888: '</label></nobr>';
1889: ##
1890: $Str .= '<nobr><label>'.&mt('Status: [_1]',
1891: '<input type="text" '.
1892: 'name="stats_status" size="60" value="" />'
1893: ).
1894: '</label></nobr>';
1895: $Str .= '</td>';
1896: ##
1897: ##
1898: $Str .= '</tr>'."\n";
1899: $Str .= '</table>'."\n";
1900: return $Str;
1901: }
1902:
1903: #########################################################
1904: #########################################################
1905: ##
1906: ## Misc Option Response functions
1907: ##
1908: #########################################################
1909: #########################################################
1910: sub get_time_from_row {
1911: my ($row) = @_;
1912: if (ref($row)) {
1913: return $row->[&Apache::loncoursedata::RD_timestamp()];
1914: }
1915: return undef;
1916: }
1917:
1918: sub get_tries_from_row {
1919: my ($row) = @_;
1920: if (ref($row)) {
1921: return $row->[&Apache::loncoursedata::RD_tries()];
1922: }
1923: return undef;
1924: }
1925:
1926: sub hashify_attempt {
1927: my ($row) = @_;
1928: my %attempt;
1929: $attempt{'student'} = $row->[&Apache::loncoursedata::RD_sname()];
1930: $attempt{'tries'} = $row->[&Apache::loncoursedata::RD_tries()];
1931: $attempt{'submission'} = &Apache::lonnet::unescape($row->[&Apache::loncoursedata::RD_submission()]);
1932: $attempt{'award'} = $row->[&Apache::loncoursedata::RD_awarddetail()];
1933: $attempt{'timestamp'} = $row->[&Apache::loncoursedata::RD_timestamp()];
1934: return %attempt;
1935: }
1936:
1937: sub Process_OR_Row {
1938: my ($row) = @_;
1939: my %RowData;
1940: # my $student_id = $row->[&Apache::loncoursedata::RD_student_id()];
1941: my $award = $row->[&Apache::loncoursedata::RD_awarddetail()];
1942: my $grading = $row->[&Apache::loncoursedata::RD_response_eval()];
1943: my $submission = $row->[&Apache::loncoursedata::RD_submission()];
1944: my $time = $row->[&Apache::loncoursedata::RD_timestamp()];
1945: # my $tries = $row->[&Apache::loncoursedata::RD_tries()];
1946: return undef if ($award eq 'MISSING_ANSWER');
1947: if (&submission_is_correct($award)) {
1948: $RowData{'_correct'} = 1;
1949: }
1950: $RowData{'_total'} = 1;
1951: my @Foilgrades = split('&',$grading);
1952: my @Foilsubs = split('&',$submission);
1953: for (my $j=0;$j<=$#Foilgrades;$j++) {
1954: my ($foilid,$correct) = split('=',$Foilgrades[$j]);
1955: $foilid = &Apache::lonnet::unescape($foilid);
1956: my (undef,$submission) = split('=',$Foilsubs[$j]);
1957: if ($correct) {
1958: $RowData{$foilid}->{'_correct'}++;
1959: } else {
1960: $submission = &Apache::lonnet::unescape($submission);
1961: $RowData{$foilid}->{$submission}++;
1962: }
1963: $RowData{$foilid}->{'_total'}++;
1964: }
1965: return %RowData;
1966: }
1967:
1968: sub submission_is_correct {
1969: my ($award) = @_;
1970: if ($award =~ /(APPROX_ANS|EXACT_ANS)/) {
1971: return 1;
1972: } else {
1973: return 0;
1974: }
1975: }
1976:
1977: 1;
1978:
1979: __END__
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