1: # The LearningOnline Network with CAPA
2: #
3: # $Id: lonproblemanalysis.pm,v 1.126 2006/05/30 12:46:49 www Exp $
4: #
5: # Copyright Michigan State University Board of Trustees
6: #
7: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
8: #
9: # LON-CAPA is free software; you can redistribute it and/or modify
10: # it under the terms of the GNU General Public License as published by
11: # the Free Software Foundation; either version 2 of the License, or
12: # (at your option) any later version.
13: #
14: # LON-CAPA is distributed in the hope that it will be useful,
15: # but WITHOUT ANY WARRANTY; without even the implied warranty of
16: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17: # GNU General Public License for more details.
18: #
19: # You should have received a copy of the GNU General Public License
20: # along with LON-CAPA; if not, write to the Free Software
21: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22: #
23: # /home/httpd/html/adm/gpl.txt
24: #
25: # http://www.lon-capa.org/
26: #
27: package Apache::lonproblemanalysis;
28:
29: use strict;
30: use Apache::lonnet;
31: use Apache::loncommon();
32: use Apache::lonhtmlcommon();
33: use Apache::loncoursedata();
34: use Apache::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: 'NumPlots' => 'scalar',
66: 'AnalyzeOver' => 'scalar',
67: );
68: &Apache::loncommon::store_course_settings('problem_analysis',
69: \%Saveable_Parameters);
70: &Apache::loncommon::restore_course_settings('problem_analysis',
71: \%Saveable_Parameters);
72: #
73: &Apache::lonstatistics::PrepareClasslist();
74: #
75: $r->print(&CreateInterface());
76: #
77: my @Students = @Apache::lonstatistics::Students;
78: #
79: if (@Students < 1 && exists($env{'form.firstrun'})) {
80: $r->print('<h2>There are no students in the sections selected</h2>');
81: }
82: #
83: my @CacheButtonHTML =
84: &Apache::lonstathelpers::manage_caches($r,'Statistics','stats_status');
85: $r->rflush();
86: #
87: my $problem_types = '(option|radiobutton|numerical)';
88: if (exists($env{'form.problemchoice'}) &&
89: ! exists($env{'form.SelectAnother'})) {
90: foreach my $button (@SubmitButtons) {
91: if ($button->{'name'} eq 'break') {
92: $r->print("<br />\n");
93: } else {
94: $r->print('<input type="submit" name="'.$button->{'name'}.'" '.
95: 'value="'.&mt($button->{'text'}).'" />');
96: $r->print(' 'x5);
97: }
98: }
99: foreach my $html (@CacheButtonHTML) {
100: $r->print($html.(' 'x5));
101: }
102: #
103:
104: # This is commented out pending actual implementation of
105: # CSV and Excel output.
106: #$r->print(&Apache::lonstathelpers::submission_report_form
107: # ('problem_analysis'));
108: #
109: $r->print('<hr />');
110: $r->rflush();
111: #
112: # Determine which problem we are to analyze
113: my $current_problem = &Apache::lonstathelpers::get_target_from_id
114: ($env{'form.problemchoice'});
115: #
116: my ($navmap,$prev,$curr,$next) =
117: &Apache::lonstathelpers::get_prev_curr_next($current_problem,
118: $problem_types,
119: 'response',
120: );
121: if (exists($env{'form.PrevProblemAnalysis'}) && defined($prev)) {
122: $current_problem = $prev;
123: } elsif (exists($env{'form.NextProblemAnalysis'}) && defined($next)) {
124: $current_problem = $next;
125: } else {
126: $current_problem = $curr;
127: }
128: #
129: # Store the current problem choice and send it out in the form
130: $env{'form.problemchoice'} =
131: &Apache::lonstathelpers::make_target_id($current_problem);
132: $r->print('<input type="hidden" name="problemchoice" value="'.
133: $env{'form.problemchoice'}.'" />');
134: #
135: if (! defined($current_problem->{'resource'})) {
136: $r->print('resource is undefined');
137: } else {
138: my $resource = $current_problem->{'resource'};
139: $r->print('<h1>'.$resource->compTitle.'</h1>');
140: $r->print('<h3>'.$resource->src.'</h3>');
141: $r->print('<h4>'.&Apache::lonstatistics::section_and_enrollment_description().'</h4>');
142: if ($env{'form.show_prob'} eq 'true') {
143: $r->print(&Apache::lonstathelpers::render_resource($resource));
144: }
145: $r->rflush();
146: my %Data = &Apache::lonstathelpers::get_problem_data
147: ($resource->src);
148: my $problem_data = $Data{$current_problem->{'part'}.
149: '.'.
150: $current_problem->{'respid'}};
151: if ($current_problem->{'resptype'} eq 'option') {
152: &OptionResponseAnalysis($r,$current_problem,
153: $problem_data,
154: \@Students);
155: } elsif ($current_problem->{'resptype'} eq 'radiobutton') {
156: &radio_response_analysis($r,$current_problem,
157: $problem_data,
158: \@Students);
159: } elsif ($current_problem->{'resptype'} eq 'numerical') {
160: &numerical_response_analysis($r,$current_problem,
161: $problem_data,\@Students);
162: } else {
163: $r->print('<h2>Analysis of '.$current_problem->{'resptype'}.' is not supported</h2>');
164: }
165: }
166: $r->print('<hr />');
167: } else {
168: my $submit_button = '<input type="submit" '.
169: 'name="ProblemAnalysis" value="'.
170: &mt('Analyze Problem').'" />';
171: $r->print($submit_button);
172: $r->print(' 'x5);
173: $r->print('<h3>'.&mt('Please select a problem to analyze').'</h3>');
174: $r->print(&Apache::lonstathelpers::problem_selector($problem_types,
175: $submit_button));
176: }
177: }
178:
179: #########################################################
180: #########################################################
181: ##
182: ## Numerical Response Routines
183: ##
184: #########################################################
185: #########################################################
186: sub numerical_response_analysis {
187: my ($r,$problem,$problem_analysis,$students) = @_;
188: my $c = $r->connection();
189: #
190: if ($env{'form.AnalyzeOver'} !~ /^(tries|time)$/) {
191: $r->print('Bad request');
192: }
193: #
194: my ($resource,$partid,$respid) = ($problem->{'resource'},
195: $problem->{'part'},
196: $problem->{'respid'});
197: # Gather student data
198: my $response_data = &Apache::loncoursedata::get_response_data
199: ([&Apache::lonstatistics::get_selected_sections()],
200: $Apache::lonstatistics::enrollment_status,
201: $resource->symb,$respid);
202: #
203: $problem_analysis->{'answercomputed'} = 1;
204: if ($problem_analysis->{'answercomputed'}) {
205: my $answers =
206: &Apache::lonstathelpers::GetStudentAnswers($r,$problem,$students,
207: 'Statistics',
208: 'stats_status');
209: $r->print(&numerical_one_dimensional_plot($r,600,150,$answers));
210: }
211: #
212: if (ref($response_data) ne 'ARRAY') {
213: $r->print('<h2>'.
214: &mt('There is no submission data for this resource').
215: '</h2>');
216: return;
217: }
218: my $analysis_html = '<table>';
219: for (my $plot_num = 1;$plot_num<=$env{'form.NumPlots'};$plot_num++) {
220: my $restriction_function;
221: my $header_message;
222: my $stats_message;
223: my $post_message; # passed through &mt sooner rather than later
224: my $no_data_message;
225: my @extra_data;
226: if ($env{'form.AnalyzeOver'} eq 'tries') {
227: $restriction_function = sub {($_[0]->{'tries'} == $plot_num?1:0)};
228: $header_message = 'Attempt [_1]';
229: $stats_message =
230: '[_1] submissions, [_2] correct, [_3] incorrect';
231: $post_message = '';
232: $no_data_message = 'No data exists for attempt [_1]';
233: } else {
234: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
235: ('startdate_'.$plot_num);
236: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
237: ('enddate_'.$plot_num);
238: ($starttime,$endtime) = &ensure_start_end_times
239: ($starttime,$endtime,
240: &get_time_from_row($response_data->[0]),
241: &get_time_from_row($response_data->[-1]),
242: $plot_num);
243: $header_message = 'Data from [_2] to [_3]';
244: $extra_data[0] = &Apache::lonlocal::locallocaltime($starttime);
245: $extra_data[1] = &Apache::lonlocal::locallocaltime($endtime);
246: #
247: $stats_message =
248: '[_1] submissions from [_4] students, [_2] correct, [_3] incorrect';
249: #
250: $post_message =
251: &mt('Start time: [_1]',
252: &Apache::lonhtmlcommon::date_setter
253: ('Statistics','startdate_'.$plot_num,$starttime)).
254: '<br />'.
255: &mt('End time: [_1]',
256: &Apache::lonhtmlcommon::date_setter
257: ('Statistics','enddate_'.$plot_num,$endtime));
258: $restriction_function =
259: sub {
260: my $t = $_[0]->{'timestamp'};
261: if ($t >= $starttime && $t < $endtime) {
262: return 1;
263: } else {
264: return 0;
265: }
266: };
267: $no_data_message = 'No data for [_2] to [_3]';
268: }
269: #
270: my ($correct,$answers) =
271: &numerical_determine_answers($r,$resource,$partid,
272: $respid,$students);
273: if ($c->aborted()) { return; };
274: #
275: my ($responses,$stats) =
276: &numerical_classify_responses($response_data,$correct,
277: $restriction_function);
278: if ($stats->{'submission_count'} == 0) {
279: $analysis_html.=
280: '<tr><td colspan="2"><font size="+1"><b>'.
281: &mt($no_data_message,$plot_num,@extra_data).
282: '</b></font></td></tr>';
283: } else {
284: $analysis_html.=
285: '<tr><td colspan="2" align="center"><font size="+1"><b>'.
286: &mt($header_message,$plot_num,@extra_data).
287: '</b></font></td></tr>'.
288: '<tr><td colspan="2" align="center">'.
289: &mt($stats_message,
290: $stats->{'submission_count'},
291: $stats->{'correct_count'},
292: $stats->{'incorrect_count'},
293: $stats->{'students'},
294: @extra_data).
295: '</td></tr>'.
296: '<tr>'.'<td valign="top" align="center">'.
297: &numerical_plot_percent($r,$responses,$stats).'</td>'.
298: '<td align="center" valign="top">'.
299: &numerical_plot_differences($r,$responses,$stats).'</td>'.
300: '</tr>';
301: }
302: if ($post_message ne '') {
303: $analysis_html .=
304: '<tr><td colspan="2">'.$post_message.'</td></tr>';
305: }
306: }
307: $analysis_html.='</table>';
308: $r->print($analysis_html);
309: #
310: return;
311: }
312:
313: sub numerical_plot_percent {
314: my ($r,$responses,$stats) = @_;
315: #
316: my $total = $stats->{'submission_count'};
317: return '' if ($total == 0);
318: my $max_bins = 50;
319: my $lowest_percent = $stats->{'min_percent'};
320: my $highest_percent = $stats->{'max_percent'};
321: my $percent_spread = $highest_percent - $lowest_percent;
322: foreach (qw/20 30 40 50 100 200/) {
323: if ($percent_spread < $_) {
324: $highest_percent =$_/2;
325: last;
326: }
327: }
328: my $bin_size = 1;
329: foreach (qw/0.01 0.05 0.1 0.5 1 2 5 10 20 25 50 100/) {
330: if ($lowest_percent/2 < $_){
331: $bin_size = $_;
332: last;
333: }
334: }
335: my @bins;
336: for (my $bin = -$highest_percent;$bin<0;$bin+=$bin_size) {
337: push (@bins,$bin);
338: }
339: for (my $bin = 0; $bin<$highest_percent;$bin+=$bin_size) {
340: push (@bins,$bin);
341: }
342: push(@bins,$highest_percent);
343: #
344: my @correct;
345: my @incorrect;
346: my @count;
347: while (my ($ans,$submissions) = each(%$responses)) {
348: while (my ($submission,$counts) = each(%$submissions)) {
349: my ($correct_count,$incorrect_count) = @$counts;
350: my $scaled_value =
351: ($ans) ? 100*($submission-$ans)/abs($ans)
352: : 0;
353: if ($scaled_value < $bins[0]) {
354: $bins[0]=$scaled_value -1;
355: }
356: my $bin;
357: for ($bin=0;$bin<$#bins;$bin++) {
358: last if ($bins[$bin]>$scaled_value);
359: }
360: $correct[$bin-1]+=$correct_count;
361: $incorrect[$bin-1]+=$incorrect_count;
362: $count[$bin-1]+=$correct_count+$incorrect_count;
363: }
364: }
365: #
366: my @plot_correct = @correct;
367: my @plot_incorrect = @incorrect;
368: my $max;
369: for (my $i=0;$i<$#bins;$i++) {
370: $plot_correct[$i] *= 100/$total;
371: $plot_incorrect[$i] *= 100/$total;
372: if (! defined($max) ||
373: $max < $plot_correct[$i]+$plot_incorrect[$i] ) {
374: $max = $plot_correct[$i]+$plot_incorrect[$i];
375: }
376: }
377: foreach (qw/1 5 10 15 20 25 30 40 50 75 100/) {
378: if ($max <$_) { $max = $_; last; }
379: }
380: #
381: my $title = &mt('Percent Difference');
382: my @labels = (1..scalar(@bins)-1);
383: my $graph = &Apache::loncommon::DrawBarGraph
384: ($title,'Percent Difference from Correct','Percent of Answers',
385: $max,['#33FF00','#FF3300'],\@labels,\@plot_correct,\@plot_incorrect,
386: {xskip=>1});
387: #
388: my $table = $graph.$/.
389: &numerical_bin_table(\@bins,\@labels,\@incorrect,\@correct,\@count).$/;
390: return $table;
391: }
392:
393: sub numerical_plot_differences {
394: my ($r,$responses,$stats) = @_;
395: #
396: my $total = $stats->{'submission_count'};
397: return '' if ($total == 0);
398: my $max_bins = 21;
399: my $min_bin_size = $stats->{'min_abs'};
400: my $low_bin = $stats->{'lowest_ans'}-$stats->{'max_bin_size'};
401: my $high_bin = $stats->{'highest_ans'}+$stats->{'max_bin_size'};
402: if ($high_bin > 0 && $low_bin > -$high_bin) {
403: $low_bin = -$high_bin;
404: } elsif ($low_bin < 0 && $high_bin < -$low_bin) {
405: $high_bin = -$low_bin;
406: }
407: if (!$min_bin_size ||
408: ($high_bin -$low_bin)/$min_bin_size * 2 > $max_bins) {
409: $min_bin_size = abs($high_bin - $low_bin) / $max_bins * 2;
410: }
411: my @bins;
412: for (my $num = $low_bin;$num <= $high_bin;$num+=($min_bin_size/2)) {
413: push(@bins,$num);
414: }
415: #
416: my @correct;
417: my @incorrect;
418: my @count;
419: while (my ($ans,$submissions) = each(%$responses)) {
420: while (my ($submission,$counts) = each(%$submissions)) {
421: my ($correct_count,$incorrect_count) = @$counts;
422: my $scaled_value = $submission-$ans;
423: if ($scaled_value < $bins[0]) {
424: $bins[0]=$scaled_value-1;
425: }
426: my $bin=0;
427: for ($bin=0;$bin<$#bins;$bin++) {
428: last if ($bins[$bin]>$scaled_value);
429: }
430: $correct[$bin-1]+=$correct_count;
431: $incorrect[$bin-1]+=$incorrect_count;
432: $count[$bin-1]+=$correct_count+$incorrect_count;
433: }
434: }
435: my @plot_correct = @correct;
436: my @plot_incorrect = @incorrect;
437: my $max;
438: for (my $i=0;$i<=$#bins;$i++) {
439: $plot_correct[$i] *= 100/$total;
440: $plot_incorrect[$i] *= 100/$total;
441: if (! defined($max) ||
442: $max < $plot_correct[$i]+$plot_incorrect[$i] ) {
443: $max = $plot_correct[$i]+$plot_incorrect[$i];
444: }
445: }
446: foreach (qw/1 5 10 15 20 25 30 40 50 75 100/) {
447: if ($max <$_) { $max = $_; last; }
448: }
449: #
450: my $title = &mt('Difference between submission and correct');
451: my @labels = (1..scalar(@bins)-1);
452: my $graph = &Apache::loncommon::DrawBarGraph
453: ($title,'Difference from Correct','Percent of Answers',
454: $max,['#33FF00','#FF3300'],\@labels,\@plot_correct,\@plot_incorrect,
455: {xskip=>1});
456: #
457: my $table = $graph.$/.
458: &numerical_bin_table(\@bins,\@labels,\@incorrect,\@correct,\@count).$/;
459: return $table;
460: }
461:
462: sub numerical_classify_responses {
463: my ($full_row_data,$correct,$function) = @_;
464: my %submission_data;
465: my %students;
466: my %stats;
467: my $max=0;
468: foreach my $row (@$full_row_data) {
469: my %subm = &hashify_attempt($row);
470: if (ref($correct) eq 'HASH') {
471: my $s_correct = $correct->{$subm{'student'}};
472: $subm{'correct'} = $s_correct->{'answer'};
473: foreach my $item ('unit','ans_low','ans_high') {
474: $subm{$item} = $s_correct->{$item};
475: }
476: } else { # This probably never happens....
477: $subm{'correct'} = $correct->{'answer'};
478: $subm{'unit'} = $correct->{'unit'};
479: }
480: #
481: my $abs_low =abs($subm{'correct'}-$subm{'ans_low'});
482: my $abs_high=abs($subm{'correct'}-$subm{'ans_high'});
483: if (! defined($stats{'min_abs'}) ||
484: $stats{'min_abs'} > $abs_low) {
485: $stats{'min_abs'} = $abs_low;
486: }
487: if ($stats{'min_abs'} > $abs_high) {
488: $stats{'min_abs'} = $abs_high;
489: }
490: if (! defined($stats{'max_abs'}) ||
491: $stats{'max_abs'} < $abs_low) {
492: $stats{'max_abs'} = $abs_low;
493: }
494: if ($stats{'max_abs'} < $abs_high) {
495: $stats{'max_abs'} = $abs_high;
496: }
497: my $low_percent;
498: my $high_percent;
499: if (defined($subm{'correct'}) && $subm{'correct'} != 0) {
500: $low_percent = 100 * abs($abs_low / $subm{'correct'});
501: $high_percent = 100 * abs($abs_high / $subm{'correct'});
502: }
503: if (! defined($stats{'min_percent'}) ||
504: $stats{'min_percent'} > $low_percent) {
505: $stats{'min_percent'} = $low_percent;
506: }
507: if ($stats{'min_percent'} > $high_percent) {
508: $stats{'min_percent'} = $high_percent;
509: }
510: if (! defined($stats{'max_percent'}) ||
511: $stats{'max_percent'} < $low_percent) {
512: $stats{'max_percent'} = $low_percent;
513: }
514: if ($stats{'max_percent'} < $high_percent) {
515: $stats{'max_percent'} = $high_percent;
516: }
517: if (! defined($stats{'lowest_ans'}) ||
518: $stats{'lowest_ans'} > $subm{'correct'}) {
519: $stats{'lowest_ans'} = $subm{'correct'};
520: }
521: if (! defined($stats{'highest_ans'}) ||
522: $stats{'highest_ans'} < $subm{'correct'}) {
523: $stats{'highest_ans'} = $subm{'correct'};
524: }
525: #
526: $subm{'submission'} =~ s/=\d+\s*$//;
527: if (&$function(\%subm)) {
528: my $scaled = '1';
529: my ($sname,$sdom) = split(':',$subm{'student'});
530: my ($myunit,$mysub) = ($subm{'unit'},$subm{'submission'});
531: my $result =
532: &capa::caparesponse_get_real_response($myunit,
533: $mysub,
534: \$scaled);
535: # &Apache::lonnet::logthis('scaled = '.$scaled.' result ='.$result);
536: next if (! defined($scaled));
537: # next if ($result ne '6');
538: my $submission = $scaled;
539: $students{$subm{'student'}}++;
540: $stats{'submission_count'}++;
541: if (&numerical_submission_is_correct($subm{'award'})) {
542: $stats{'correct_count'}++;
543: $submission_data{$subm{'correct'}}->{$submission}->[0]++;
544: } elsif (&numerical_submission_is_incorrect($subm{'award'})) {
545: $stats{'incorrect_count'}++;
546: $submission_data{$subm{'correct'}}->{$submission}->[1]++;
547: }
548: }
549: }
550: $stats{'correct_count'} |= 0;
551: $stats{'incorrect_count'} |= 0;
552: $stats{'students'}=scalar(keys(%students));
553: return (\%submission_data,\%stats);
554: }
555:
556: sub numerical_submission_is_correct {
557: my ($award) = @_;
558: if ($award =~ /^(APPROX_ANS|EXACT_ANS)$/) {
559: return 1;
560: } else {
561: return 0;
562: }
563: }
564:
565: sub numerical_submission_is_incorrect {
566: my ($award) = @_;
567: if ($award =~ /^(INCORRECT)$/) {
568: return 1;
569: } else {
570: return 0;
571: }
572: }
573:
574: sub numerical_bin_table {
575: my ($bins,$labels,$incorrect,$correct,$count)=@_;
576: my $table =
577: '<table><tr><th>'.&mt('Bar').'</th>'.
578: '<th colspan="3">'.&mt('Range').'</th>'.
579: '<th>'.&mt('Incorrect').'</th>'.
580: '<th>'.&mt('Correct').'</th>'.
581: '<th>'.&mt('Count').'</th>'.
582: '</tr>'.$/;
583: for (my $i=0;$i<scalar(@{$bins}-1);$i++) {
584: my $lownum = $bins->[$i];
585: if ($i == 0) { $lownum = '-∞'; }
586: my $highnum = $bins->[$i+1];
587: if ($i == scalar(@{$bins})-2) { $highnum = '∞'; }
588: $table .=
589: '<tr>'.
590: '<td>'.$labels->[$i].'</td>'.
591: '<td align="right">'.$lownum.'</td>'.
592: '<td> - </td>'.
593: '<td align="right">'.$highnum.'</td>'.
594: '<td align="right">'.$incorrect->[$i].'</td>'.
595: '<td align="right">'.$correct->[$i].'</td>'.
596: '<td align="right">'.$count->[$i].'</td>'.
597: '</tr>'.$/;
598: }
599: $table.= '</table>';
600: return $table;
601: }
602:
603: sub numerical_determine_answers {
604: my ($r,$resource,$partid,$respid,$students)=@_;
605: my $c = $r->connection();
606: #
607: my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin
608: ($r,'Student Answer Compilation Status',
609: 'Student Answer Compilation Progress', scalar(@$students),
610: 'inline',undef,'Statistics','stats_status');
611: #
612: # Read in the cache (if it exists) before we start timing things.
613: &Apache::lonstathelpers::ensure_proper_cache($resource->{'symb'});
614: #
615: my $correct;
616: my %answers;
617: foreach my $student (@$students) {
618: last if ($c->aborted());
619: my $sname = $student->{'username'};
620: my $sdom = $student->{'domain'};
621: # analyze problem
622: my $analysis =
623: &Apache::lonstathelpers::analyze_problem_as_student($resource,
624: $sname,
625: $sdom);
626: # make the key
627: my $key = $partid.'.'.$respid;
628: foreach my $item ('answer','unit','ans_high','ans_low') {
629: $correct->{$sname.':'.$sdom}->{$item} =
630: $analysis->{$key.'.'.$item}->[0];
631: }
632: $answers{$analysis->{$key.'.answer'}->[0]}++;
633: &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
634: &mt('last student'));
635: }
636: &Apache::lonstathelpers::write_analysis_cache();
637: &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
638: return ($correct,\%answers);
639: }
640:
641: #
642: # Inputs: $r, $width, $height, $data
643: # $n = number of students
644: # $data = hashref of $answer => $frequency pairs
645: sub numerical_one_dimensional_plot {
646: my ($r,$width,$height,$data)=@_;
647: #
648: # Compute data -> image scaling factors
649: my $max_y = 0;
650: my $min_x = undef;
651: my $max_x = undef;
652: my $n = 0;
653: while (my ($answer,$count) = each(%$data)) {
654: $n+=$count;
655: $max_y = $count if ($max_y < $count);
656: if (! defined($min_x) || $answer < $min_x) {
657: $min_x = $answer;
658: }
659: if (! defined($max_x) || $answer > $max_x) {
660: $max_x = $answer;
661: }
662: }
663: #
664: my $min_max_difference = $max_x - $min_x;
665: if (! defined($min_max_difference) || $min_max_difference == 0) {
666: $min_max_difference = 1;
667: }
668: my $h_scale = ($width-10)/$min_max_difference;
669: #
670: my $ticscale = 5;
671: if ($max_y * $ticscale > $height/2) {
672: $ticscale = int($height/2/$max_y);
673: $ticscale = 1 if ($ticscale < 1);
674: }
675: #
676: # Create the plot
677: my $plot =
678: qq{<drawimage width="$width" height="$height" bgcolor="transparent" >};
679: while (my ($answer,$count) = each(%$data)) {
680: my $xloc = 5+$h_scale*($answer - $min_x);
681: my $top = $height/2-$count*$ticscale;
682: my $bottom = $height/2+$count*$ticscale;
683: $plot .= &line($xloc,$top,$xloc,$bottom,'888888',1);
684: }
685: #
686: # Put the scale on last to ensure it is on top of the data.
687: if ($min_x < 0 && $max_x > 0) {
688: my $circle_x = 5+$h_scale*abs($min_x); # '0' in data coordinates
689: my $r = 4;
690: $plot .= &line(5,$height/2,$circle_x-$r,$height/2,'000000',1);
691: $plot .= &circle($circle_x,$height/2,$r+1,'000000');
692: $plot .= &line($circle_x+$r,$height/2,$width-5,$height/2,'000000',1);
693: } else {
694: $plot .= &line(5,$height/2,$width-5,$height/2,'000000',1);
695: }
696: $plot .= '</drawimage>';
697: my $plotresult = &Apache::lonxml::xmlparse($r,'web',$plot);
698: my $result = '<table>'.
699: '<tr><td colspan="3" align="center">'.
700: '<font size="+2">'.&mt('Distribution of correct answers').'</font>'.
701: '<br />'.&mt('[_1] students, [_2] distinct correct answers',
702: $n,scalar(keys(%$data))).
703: '<br />'.&mt('Maximum number of coinciding values: [_1]',$max_y).
704: '</td></tr>'.
705: '<tr>'.
706: '<td valign="center">'.$min_x.'</td>'.
707: '<td>'.$plotresult.'</td>'.
708: '<td valign="center">'.$max_x.'</td>'.
709: '</tr>'.
710: '</table>';
711: return $result;
712: }
713:
714: ##
715: ## Helper subroutines for <drawimage>.
716: ## These should probably go somewhere more suitable soon.
717: sub line {
718: my ($x1,$y1,$x2,$y2,$color,$thickness) = @_;
719: return qq{<line x1="$x1" y1="$y1" x2="$x2" y2="$y2" color="$color" thickness="$thickness" />};
720: }
721:
722: sub text {
723: my ($x,$y,$color,$text,$font,$direction) = @_;
724: if (! defined($font) || $font !~ /^(tiny|small|medium|large|giant)$/) {
725: $font = 'medium';
726: }
727: if (! defined($direction) || $direction ne 'vertical') {
728: $direction = '';
729: }
730: return qq{<text x="$x" y="$y" color="$color" font="$font" direction="$direction" >$text</text>};
731: }
732:
733: sub rectangle {
734: my ($x1,$y1,$x2,$y2,$color,$thickness,$filled) = @_;
735: return qq{<rectangle x1="$x1" y1="$y1" x2="$x2" y2="$y2" color="$color" thickness="$thickness" filled="$filled" />};
736: }
737:
738: sub arc {
739: my ($x,$y,$width,$height,$start,$end,$color,$thickness,$filled)=@_;
740: return qq{<arc x="$x" y="$y" width="$width" height="$height" start="$start" end="$end" color="$color" thickness="$thickness" filled="$filled" />};
741: }
742:
743: sub circle {
744: my ($x,$y,$radius,$color,$thickness,$filled)=@_;
745: return &arc($x,$y,$radius,$radius,0,360,$color,$thickness,$filled);
746: }
747:
748: #########################################################
749: #########################################################
750: ##
751: ## Radio Response Routines
752: ##
753: #########################################################
754: #########################################################
755: sub radio_response_analysis {
756: my ($r,$problem,$problem_analysis,$students) = @_;
757: #
758: if ($env{'form.AnalyzeOver'} !~ /^(tries|time)$/) {
759: $r->print('Bad request');
760: }
761: #
762: my ($resource,$partid,$respid) = ($problem->{'resource'},
763: $problem->{'part'},
764: $problem->{'respid'});
765: #
766: my $analysis_html;
767: my $foildata = $problem_analysis->{'_Foils'};
768: my ($table,$foils,$concepts) = &build_foil_index($problem_analysis);
769: if (! defined($concepts)) {
770: $concepts = [];
771: }
772: #
773: my %true_foils;
774: my $num_true = 0;
775: if (! $problem_analysis->{'answercomputed'}) {
776: foreach my $foil (@$foils) {
777: if ($foildata->{$foil}->{'value'} eq 'true') {
778: $true_foils{$foil}++;
779: }
780: }
781: $num_true = scalar(keys(%true_foils));
782: }
783: #
784: $analysis_html .= $table;
785: # Gather student data
786: my $response_data = &Apache::loncoursedata::get_response_data
787: ([&Apache::lonstatistics::get_selected_sections()],
788: $Apache::lonstatistics::enrollment_status,
789: $resource->symb,$respid);
790: my $correct; # either a hash reference or a scalar
791: if ($problem_analysis->{'answercomputed'} || scalar(@$concepts) > 1) {
792: # This takes a while for large classes...
793: &Apache::lonstathelpers::GetStudentAnswers($r,$problem,$students,
794: 'Statistics',
795: 'stats_status');
796: foreach my $student (@$students) {
797: my ($idx,@remainder) = split('&',$student->{'answer'});
798: my ($answer) = ($remainder[$idx]=~/^(.*)=([^=]*)$/);
799: $correct->{$student->{'username'}.':'.$student->{'domain'}}=
800: &unescape($answer);
801: }
802: } else {
803: foreach my $foil (keys(%$foildata)) {
804: if ($foildata->{$foil}->{'value'} eq 'true') {
805: $correct = $foildata->{$foil}->{'name'};
806: }
807: }
808: }
809: #
810: if (! defined($response_data) || ref($response_data) ne 'ARRAY' ) {
811: $analysis_html = '<h2>'.
812: &mt('There is no submission data for this resource').
813: '</h2>';
814: $r->print($analysis_html);
815: return;
816: }
817: #
818: $analysis_html.='<table>';
819: for (my $plot_num = 1;$plot_num<=$env{'form.NumPlots'};$plot_num++) {
820: # classify data ->correct foil -> selected foil
821: my ($restriction_function,
822: $correct_foil_title,$incorrect_foil_title,
823: $pre_graph_text,$post_graph_text,
824: $no_data_text,@extra_data);
825: if ($env{'form.AnalyzeOver'} eq 'tries') {
826: $restriction_function = sub {($_[0]->{'tries'} == $plot_num?1:0)};
827: $correct_foil_title = 'Attempt '.$plot_num;
828: $incorrect_foil_title = 'Attempt '.$plot_num;
829: $pre_graph_text =
830: 'Attempt [_1], [_2] submissions, [_3] correct, [_4] incorrect';
831: $post_graph_text = '';
832: $no_data_text = 'No data exists for attempt [_1]';
833: } elsif ($env{'form.AnalyzeOver'} eq 'time') {
834: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
835: ('startdate_'.$plot_num);
836: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
837: ('enddate_'.$plot_num);
838: ($starttime,$endtime) = &ensure_start_end_times
839: ($starttime,$endtime,
840: &get_time_from_row($response_data->[0]),
841: &get_time_from_row($response_data->[-1]),
842: $plot_num);
843: $pre_graph_text =
844: 'Data from [_6] to [_7]<br /> [_2] submissions from [_5] students, [_3] correct, [_4] incorrect';
845: $extra_data[0] = &Apache::lonlocal::locallocaltime($starttime);
846: $extra_data[1] = &Apache::lonlocal::locallocaltime($endtime);
847: #
848: $post_graph_text =
849: &mt('Start time: [_1]',
850: &Apache::lonhtmlcommon::date_setter
851: ('Statistics','startdate_'.$plot_num,$starttime)).
852: '<br />'.
853: &mt('End time: [_1]',
854: &Apache::lonhtmlcommon::date_setter
855: ('Statistics','enddate_'.$plot_num,$endtime));
856: $restriction_function =
857: sub {
858: my $t = $_[0]->{'timestamp'};
859: if ($t >= $starttime && $t < $endtime) {
860: return 1;
861: } else {
862: return 0;
863: }
864: };
865: $no_data_text = 'No data for [_5] to [_6]';
866: }
867: my $foil_choice_data =
868: &classify_response_data($response_data,$correct,
869: $restriction_function);
870: # &Apache::lonstathelpers::log_hash_ref($foil_choice_data);
871: my $answers;
872: if (ref($correct)) {
873: my %tmp;
874: foreach my $foil (values(%$correct)) {
875: $tmp{$foil}++;
876: }
877: $answers = [keys(%tmp)];
878: } else {
879: $answers = [$correct];
880: }
881: # Concept Plot
882: my $concept_plot = '';
883: if (scalar(@$concepts) > 1) {
884: $concept_plot = &RR_concept_plot($concepts,$foil_choice_data,
885: 'Correct Concepts');
886: }
887: # % Choosing plot
888: my $choice_plot = &RR_create_percent_selected_plot
889: ($concepts,$foils,$foil_choice_data,$correct_foil_title);
890: # for each correct foil, how did they mark it? (stacked bar graph)
891: my ($stacked_plot,$count_by_foil);
892: if ($problem_analysis->{'answercomputed'} || $num_true > 1) {
893: ($stacked_plot,$count_by_foil) =
894: &RR_create_stacked_selection_plot($foils,$foil_choice_data,
895: $incorrect_foil_title,
896: \%true_foils);
897: }
898: #
899: if ($concept_plot ne '' ||
900: $choice_plot ne '' ||
901: $stacked_plot ne '') {
902: my $correct = $foil_choice_data->{'_correct'};
903: $correct |= 0;
904: my $incorrect = $foil_choice_data->{'_count'}-$correct;
905: $analysis_html.= '<tr><td colspan="4" align="center">'.
906: '<font size="+1">'.
907: &mt($pre_graph_text,
908: $plot_num,$foil_choice_data->{'_count'},
909: $correct,
910: $incorrect,
911: $foil_choice_data->{'_students'},
912: @extra_data).
913: '</td></tr>'.$/;
914: $analysis_html.=
915: '<tr>'.
916: '<td>'.$concept_plot.'</td>'.
917: '<td>'.$choice_plot.'</td>';
918: if ($stacked_plot ne '') {
919: $analysis_html .=
920: '<td>'.$stacked_plot.'</td>'.
921: '<td>'.&build_foil_key($foils,$count_by_foil).'</td>';
922: } else {
923: $analysis_html .= ('<td></td>'x2);
924: }
925: $analysis_html.='</tr>'.$/;
926: if (defined($post_graph_text)) {
927: $analysis_html.= '<tr><td colspan="4" align="center">'.
928: $post_graph_text.'</td></tr>'.$/;
929: }
930: } elsif ($no_data_text ne '') {
931: $analysis_html.='<tr><td colspan="4" align="center">'.
932: &mt($no_data_text,
933: $plot_num,$foil_choice_data->{'_count'},
934: $correct,
935: $foil_choice_data->{'_count'}-$correct,
936: @extra_data);
937: if (defined($post_graph_text)) {
938: $analysis_html.='<br />'.$post_graph_text;
939: }
940: $analysis_html.='</td></tr>'.$/;
941: }
942: } # end of loop for plots
943: $analysis_html.='</table>';
944: $r->print($analysis_html);
945: }
946:
947: sub ensure_start_end_times {
948: my ($start,$end,$first,$last,$plot_num) = @_;
949: if (! defined($start) || ! defined($end)) {
950: my $sec_in_day = 86400;
951: my ($sday,$smon,$syear) =
952: (localtime($last - $sec_in_day*($plot_num-1)))[3..5];
953: $start = &Time::Local::timelocal(0,0,0,$sday,$smon,$syear);
954: $end = $start + $sec_in_day;
955: if ($plot_num == $env{'form.NumPlots'}) {
956: $start = $first;
957: }
958: }
959: return ($start,$end);
960: }
961:
962: sub RR_concept_plot {
963: my ($concepts,$foil_data,$title) = @_;
964: #
965: my %correct_by_concept;
966: my %incorrect_by_concept;
967: my %true;
968: foreach my $concept (@$concepts) {
969: foreach my $foil (@{$concept->{'foils'}}) {
970: next if (! exists($foil_data->{$foil}));
971: foreach my $choice (keys(%{$foil_data->{$foil}})) {
972: if ($choice eq $foil) {
973: $correct_by_concept{$concept->{'name'}} +=
974: $foil_data->{$foil}->{$choice};
975: } else {
976: $incorrect_by_concept{$concept->{'name'}} +=
977: $foil_data->{$foil}->{$choice};
978: }
979: }
980: }
981: }
982: #
983: # need arrays for incorrect and correct because we want to use different
984: # colors for them
985: my @correct;
986: #
987: my $total =0;
988: for (my $i=0;$i<scalar(@$concepts);$i++) {
989: my $concept = $concepts->[$i];
990: $correct[$i] = $correct_by_concept{$concept->{'name'}};
991: $total += $correct_by_concept{$concept->{'name'}}+
992: $incorrect_by_concept{$concept->{'name'}};
993: }
994: if ($total == 0) { return ''; };
995: for (my $i=0;$i<=$#correct;$i++) {
996: $correct[$i] = sprintf('%0f',$correct[$i]/$total*100);
997: }
998: my $xlabel = 'concept';
999: my $plot= &Apache::loncommon::DrawBarGraph($title,
1000: $xlabel,
1001: 'Percent Choosing',
1002: 100,
1003: ['#33ff00','#ff3300'],
1004: undef,
1005: \@correct);
1006: return $plot;
1007: }
1008:
1009: sub RR_create_percent_selected_plot {
1010: my ($concepts,$foils,$foil_data,$title) = @_;
1011: #
1012: if ($foil_data->{'_count'} == 0) { return ''; };
1013: my %correct_selections;
1014: my %incorrect_selections;
1015: foreach my $foil (@$foils) {
1016: # foil_data has format $foil_data->{true_foil}->{selected foil}=count
1017: next if (! exists($foil_data->{$foil}));
1018: while (my ($f,$count)= each(%{$foil_data->{$foil}})) {
1019: if ($f eq $foil) {
1020: $correct_selections{$foil} += $count;
1021: } else {
1022: $incorrect_selections{$f} += $count;
1023: }
1024: }
1025: }
1026: #
1027: # need arrays for incorrect and correct because we want to use different
1028: # colors for them
1029: my @correct;
1030: my @incorrect;
1031: #
1032: my $total = $foil_data->{'_count'};
1033: for (my $i=0;$i<scalar(@$foils);$i++) {
1034: my $foil = $foils->[$i];
1035: $correct[$i] = $correct_selections{$foil};
1036: $incorrect[$i] = $incorrect_selections{$foil};
1037: }
1038: for (my $i=0;$i<=$#correct;$i++) {
1039: $correct[$i] = sprintf('%2f',$correct[$i]/$total*100);
1040: }
1041: for (my $i=0;$i<=$#incorrect;$i++) {
1042: $incorrect[$i] = sprintf('%2f',$incorrect[$i]/$total*100);
1043: }
1044: #
1045: # Put a blank in the data sets between concepts, if there are concepts
1046: my @labels;
1047: if (defined($concepts) && scalar(@$concepts) > 1) {
1048: my @new_correct;
1049: my @new_incorrect;
1050: my $foil_count = 0;
1051: foreach my $concept (@$concepts) {
1052: foreach (@{$concept->{'foils'}}) {
1053: push(@new_correct, $correct[$foil_count]);
1054: push(@new_incorrect,$incorrect[$foil_count]);
1055: push(@labels,++$foil_count);
1056: }
1057: push(@new_correct,'');
1058: push(@new_incorrect,'');
1059: push(@labels,'');
1060: }
1061: @correct = @new_correct;
1062: @incorrect = @new_incorrect;
1063: } else {
1064: @labels = (1 .. scalar(@correct));
1065: }
1066: #
1067: my $xlabel = 'foil chosen';
1068: my $plot= &Apache::loncommon::DrawBarGraph($title,
1069: $xlabel,
1070: 'Percent Choosing',
1071: 100,
1072: ['#33ff00','#ff3300'],
1073: \@labels,
1074: \@correct,
1075: \@incorrect);
1076: return $plot;
1077: }
1078:
1079: sub RR_create_stacked_selection_plot {
1080: my ($foils,$foil_data,$title,$true_foils)=@_;
1081: #
1082: my @dataset; # array of array refs - multicolor rows $datasets[row]->[col]
1083: my @labels;
1084: my $count;
1085: my %column; # maps foil name to column in @datasets
1086: for (my $i=0;$i<scalar(@$foils);$i++) {
1087: my $foil = $foils->[$i];
1088: if (defined($true_foils) && scalar(keys(%$true_foils)) > 0 ) {
1089: next if (! $true_foils->{$foil} );
1090: push(@labels,$i+1);
1091: } else {
1092: next if (! exists($foil_data->{$foil}));
1093: push(@labels,$i+1);
1094: }
1095: next if (! exists($foil_data->{$foils->[$i]}));
1096: $column{$foil}= $count++;
1097: for (my $j=0;$j<scalar(@$foils);$j++) {
1098: my $value = 0;
1099: if ($i != $j ) {
1100: $value += $foil_data->{$foil}->{$foils->[$j]};
1101: }
1102: $dataset[$j]->[$column{$foil}]=$value;
1103: }
1104: }
1105: #
1106: return '' if (! scalar(keys(%column)));
1107: #
1108: my $grand_total = 0;
1109: my %count_per_foil;
1110: while (my ($foil,$bar) = each (%column)) {
1111: my $bar_total = 0;
1112: for (my $j=0;$j<scalar(@dataset);$j++) {
1113: $bar_total += $dataset[$j]->[$bar];
1114: }
1115: next if ($bar_total == 0);
1116: for (my $j=0;$j<scalar(@dataset);$j++) {
1117: $dataset[$j]->[$bar] =
1118: sprintf('%2f',$dataset[$j]->[$bar]/$bar_total * 100);
1119: }
1120: $count_per_foil{$foil}=' ( '.$bar_total.' )';
1121: $grand_total += $bar_total;
1122: }
1123: if ($grand_total == 0) {
1124: return ('',undef);
1125: }
1126: my @empty_row = ();
1127: foreach (@{$dataset[0]}) {
1128: push(@empty_row,0);
1129: }
1130: #
1131: my $graph = &Apache::loncommon::DrawBarGraph
1132: ($title,'Correct Foil','foils chosen Incorrectly',
1133: 100,$plotcolors,\@labels,\@empty_row,@dataset);
1134: return ($graph,\%count_per_foil);
1135: }
1136:
1137:
1138: #########################################################
1139: #########################################################
1140: ##
1141: ## Misc routines
1142: ##
1143: #########################################################
1144: #########################################################
1145:
1146: # if $correct is a hash ref, it is assumed to be indexed by student names.
1147: # the values are assumed to be hash refs with a key of 'answer'.
1148: sub classify_response_data {
1149: my ($full_row_data,$correct,$function) = @_;
1150: my %submission_data;
1151: my %students;
1152: my $max=0;
1153: foreach my $row (@$full_row_data) {
1154: my %subm = &hashify_attempt($row);
1155: if (ref($correct) eq 'HASH') {
1156: $subm{'correct'} = $correct->{$subm{'student'}};
1157: } else {
1158: $subm{'correct'} = $correct;
1159: }
1160: $subm{'submission'} =~ s/=\d+\s*$//;
1161: if (&$function(\%subm)) {
1162: $students{$subm{'student'}}++;
1163: $submission_data{'_count'}++;
1164: if (&submission_is_correct($subm{'award'})) {
1165: $submission_data{'_correct'}++;
1166: }
1167:
1168: if($max<++$submission_data{$subm{'correct'}}->{$subm{'submission'}}) {
1169: $max=$submission_data{$subm{'correct'}}->{$subm{'submission'}};
1170: }
1171: }
1172: }
1173: $submission_data{'_max'} = $max;
1174: $submission_data{'_students'}=scalar(keys(%students));
1175: return \%submission_data;
1176: }
1177:
1178:
1179: #########################################################
1180: #########################################################
1181: ##
1182: ## Option Response Routines
1183: ##
1184: #########################################################
1185: #########################################################
1186: sub OptionResponseAnalysis {
1187: my ($r,$problem,$problem_data,$Students) = @_;
1188: my ($resource,$respid) = ($problem->{'resource'},
1189: $problem->{'respid'});
1190: # Note: part data is not needed.
1191: my $PerformanceData = &Apache::loncoursedata::get_response_data
1192: ([&Apache::lonstatistics::get_selected_sections()],
1193: $Apache::lonstatistics::enrollment_status,
1194: $resource->symb,$respid);
1195: if (! defined($PerformanceData) ||
1196: ref($PerformanceData) ne 'ARRAY' ) {
1197: $r->print('<h2>'.
1198: &mt('There is no student data for this problem.').
1199: '</h2>');
1200: } else {
1201: $r->rflush();
1202: if ($env{'form.AnalyzeOver'} eq 'tries') {
1203: my $analysis_html = &OR_tries_analysis($r,
1204: $PerformanceData,
1205: $problem_data);
1206: $r->print($analysis_html);
1207: $r->rflush();
1208: } elsif ($env{'form.AnalyzeOver'} eq 'time') {
1209: my $analysis_html = &OR_time_analysis($PerformanceData,
1210: $problem_data);
1211: $r->print($analysis_html);
1212: $r->rflush();
1213: } else {
1214: $r->print('<h2>'.
1215: &mt('The analysis you have selected is '.
1216: 'not supported at this time').
1217: '</h2>');
1218: }
1219: }
1220: }
1221:
1222: #########################################################
1223: #
1224: # Option Response: tries Analysis
1225: #
1226: #########################################################
1227: sub OR_tries_analysis {
1228: my ($r,$PerformanceData,$ORdata) = @_;
1229: my $mintries = 1;
1230: my $maxtries = $env{'form.NumPlots'};
1231: my ($table,$Foils,$Concepts) = &build_foil_index($ORdata);
1232: if (! defined($Concepts)) {
1233: $Concepts = [];
1234: }
1235: my %response_data = &OR_analyze_by_tries($r,$PerformanceData,
1236: $mintries,$maxtries);
1237: my $analysis = '';
1238: #
1239: # Compute the data necessary to make the plots
1240: my @foil_plot;
1241: my @concept_data;
1242: for (my $j=0;$j<=scalar(@$Concepts);$j++) {
1243: my $concept = $Concepts->[$j];
1244: foreach my $foilid (@{$concept->{'foils'}}) {
1245: for (my $try=$mintries;$try<=$maxtries;$try++) {
1246: # concept analysis data
1247: $concept_data[$j]->[$try]->{'_correct'} +=
1248: $response_data{$foilid}->[$try]->{'_correct'};
1249: $concept_data[$j]->[$try]->{'_total'} +=
1250: $response_data{$foilid}->[$try]->{'_total'};
1251: #
1252: # foil analysis data
1253: if ($response_data{$foilid}->[$try]->{'_total'} == 0) {
1254: push(@{$foil_plot[$try]->{'_correct'}},0);
1255: } else {
1256: push(@{$foil_plot[$try]->{'_correct'}},
1257: 100*$response_data{$foilid}->[$try]->{'_correct'}/
1258: $response_data{$foilid}->[$try]->{'_total'});
1259: }
1260: foreach my $option (@{$ORdata->{'_Options'}}) {
1261: push(@{$foil_plot[$try]->{'_total'}},
1262: $response_data{$foilid}->[$try]->{'_total'});
1263: if ($response_data{$foilid}->[$try]->{'_total'} == 0) {
1264: push (@{$foil_plot[$try]->{$option}},0);
1265: } else {
1266: if ($response_data{$foilid}->[$try]->{'_total'} ==
1267: $response_data{$foilid}->[$try]->{'_correct'}) {
1268: push(@{$foil_plot[$try]->{$option}},0);
1269: } else {
1270: push (@{$foil_plot[$try]->{$option}},
1271: 100 *
1272: $response_data{$foilid}->[$try]->{$option} /
1273: ($response_data{$foilid}->[$try]->{'_total'}
1274: -
1275: $response_data{$foilid}->[$try]->{'_correct'}
1276: ));
1277: }
1278: }
1279: } # End of foreach my $option
1280: }
1281: } # End of foreach my $foilid
1282: } # End of concept loops
1283: #
1284: # Build a table for the plots
1285: my $analysis_html = "<br /><table>\n";
1286: my $optionkey = &build_option_index($ORdata);
1287: my $num_concepts = 1;
1288: if (defined($Concepts)) { $num_concepts = scalar(@$Concepts); }
1289: #
1290: for (my $try=$mintries;$try<=$maxtries;$try++) {
1291: if (! defined($response_data{'_total'}->[$try]) ||
1292: $response_data{'_total'}->[$try] == 0) {
1293: if ($try > 1) {
1294: $analysis_html.= '<tr><td align="center" colspan="4"><b>'.
1295: &mt('None of the selected students attempted the problem more than [_1] times.',$try-1).
1296: '</b></td></tr>';
1297: } else {
1298: $analysis_html.= '<tr><td colspan="4" align="center"><b>'.
1299: &mt('None of the selected students have attempted the problem').'</b></td></tr>';
1300: }
1301: last;
1302: }
1303: my $concept_graph='';
1304: if ($num_concepts > 1) {
1305: #
1306: # Create concept plot
1307: my @concept_plot_data;
1308: for (my $j=0;$j<=$#concept_data;$j++) {
1309: my $total = $concept_data[$j]->[$try]->{'_total'};
1310: if ($total == 0) {
1311: $concept_plot_data[$j] = 0;
1312: } else {
1313: $concept_plot_data[$j] = 100 *
1314: sprintf('%0.3f',
1315: $concept_data[$j]->[$try]->{'_correct'} /
1316: $total);
1317: }
1318: }
1319: #
1320: $concept_graph = &Apache::loncommon::DrawBarGraph
1321: ('Correct Concepts','Concept Number','Percent Correct',
1322: 100,$plotcolors,undef,\@concept_plot_data,{xskip=>1});
1323: }
1324: #
1325: # Create Foil Plots
1326: my $data_count = $response_data{'_total'}->[$try];
1327: my $correct = $response_data{'_correct'}->[$try];
1328: $correct |= 0;
1329: my @Datasets;
1330: foreach my $option ('_correct',@{$ORdata->{'_Options'}}) {
1331: next if (! exists($foil_plot[$try]->{$option}));
1332: push(@Datasets,$foil_plot[$try]->{$option});
1333: }
1334: #
1335: # Put a blank in the data set between concepts
1336: for (my $set =0;$set<=$#Datasets;$set++) {
1337: my @Data = @{$Datasets[$set]};
1338: my $idx = 0;
1339: foreach my $concept (@{$Concepts}) {
1340: foreach my $foilid (@{$concept->{'foils'}}) {
1341: $Datasets[$set]->[$idx++]=shift(@Data);
1342: }
1343: if ($concept->{'name'} ne $Concepts->[-1]->{'name'}) {
1344: $Datasets[$set]->[$idx++] = 0;
1345: }
1346: }
1347: }
1348: #
1349: # Set up the labels needed for the bar graph
1350: my @Labels;
1351: my $idx = 1;
1352: foreach my $concept (@{$Concepts}) {
1353: foreach my $foilid (@{$concept->{'foils'}}) {
1354: push(@Labels,$idx++);
1355: }
1356: push(@Labels,'');
1357: }
1358: #
1359: my $correct_graph = &Apache::loncommon::DrawBarGraph
1360: ('Correct Statements','Statement','% Answered Correct',
1361: 100,$plotcolors,\@Labels,$Datasets[0],{xskip=>1});
1362:
1363: #
1364: #
1365: next if (! defined($Datasets[0]));
1366: for (my $i=0; $i< scalar(@{$Datasets[0]});$i++) {
1367: $Datasets[0]->[$i]=0;
1368: }
1369: my $count = $response_data{'_total'}->[$try] -
1370: $response_data{'_correct'}->[$try];
1371: my $incorrect_graph = &Apache::loncommon::DrawBarGraph
1372: ('Incorrect Statements','Statement','% Chosen Incorrectly',
1373: 100,$plotcolors,\@Labels,@Datasets,{xskip=>1});
1374: $analysis_html.=
1375: '<tr><td colspan="4" align="center">'.
1376: '<font size="+1">'.
1377: &mt('Attempt [_1], [_2] submissions, [_3] correct, [_4] incorrect',
1378: $try,$data_count,$correct,$data_count-$correct).
1379: '</font>'.'</td></tr>'.$/.
1380: '<tr>'.
1381: '<td>'.$concept_graph.'</td>'.
1382: '<td>'.$correct_graph.'</td>'.
1383: '<td>'.$incorrect_graph.'</td>'.
1384: '<td>'.$optionkey.'<td>'.
1385: '</tr>'.$/;
1386: }
1387: $analysis_html .= "</table>\n";
1388: $table .= $analysis_html;
1389: return $table;
1390: }
1391:
1392: sub OR_analyze_by_tries {
1393: my ($r,$PerformanceData,$mintries,$maxtries) = @_;
1394: my %Trydata;
1395: $mintries = 1 if (! defined($mintries) || $mintries < 1);
1396: $maxtries = $mintries if (! defined($maxtries) || $maxtries < $mintries);
1397: my @students;
1398: foreach my $row (@$PerformanceData) {
1399: next if (! defined($row));
1400: my $tries = &get_tries_from_row($row);
1401: my %Row = &Process_OR_Row($row);
1402: next if (! %Row);
1403: my $student_id = $row->[&Apache::loncoursedata::RD_student_id()];
1404: $students[$tries]->{$student_id}++;
1405: while (my ($foilid,$href) = each(%Row)) {
1406: if (! ref($href)) {
1407: $Trydata{$foilid}->[$tries] += $href;
1408: next;
1409: }
1410: while (my ($option,$value) = each(%$href)) {
1411: $Trydata{$foilid}->[$tries]->{$option}+=$value;
1412: }
1413: }
1414: }
1415: for (my $try=$mintries;$try<=$maxtries;$try++) {
1416: $Trydata{'_studentcount'}->[$try] = scalar(keys(%{$students[$try]}));
1417: }
1418: return %Trydata;
1419: }
1420:
1421: #########################################################
1422: #
1423: # Option Response: Time Analysis
1424: #
1425: #########################################################
1426: sub OR_time_analysis {
1427: my ($performance_data,$ORdata) = @_;
1428: my ($table,$Foils,$Concepts) = &build_foil_index($ORdata);
1429: my $foilkey = &build_option_index($ORdata);
1430: my $num_concepts = 1;
1431: if (defined($Concepts)) { $num_concepts = scalar(@$Concepts); }
1432: #
1433: if ($num_concepts < 2) {
1434: $table = '<h3>'.
1435: &mt('Not enough data for concept analysis. '.
1436: 'Performing Foil Analysis').
1437: '</h3>'.$table;
1438: }
1439: #
1440: my $num_plots = $env{'form.NumPlots'};
1441: my $num_data = scalar(@$performance_data)-1;
1442: #
1443: my $current_index;
1444: $table .= "<table>\n";
1445: for (my $i=0;$i<$num_plots;$i++) {
1446: ##
1447: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
1448: ('startdate_'.$i);
1449: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
1450: ('enddate_'.$i);
1451: if (! defined($starttime) || ! defined($endtime)) {
1452: my $sec_in_day = 86400;
1453: my $last_sub_time = &get_time_from_row($performance_data->[-1]);
1454: my ($sday,$smon,$syear) =
1455: (localtime($last_sub_time - $sec_in_day*$i))[3..5];
1456: $starttime = &Time::Local::timelocal(0,0,0,$sday,$smon,$syear);
1457: $endtime = $starttime + $sec_in_day;
1458: if ($i == ($num_plots -1 )) {
1459: $starttime = &get_time_from_row($performance_data->[0]);
1460: }
1461: }
1462: $table .= '<tr><td colspan="4" align="center"><font size="+1">'.
1463: &mt('Data from [_1] to [_2]',
1464: &Apache::lonlocal::locallocaltime($starttime),
1465: &Apache::lonlocal::locallocaltime($endtime)).
1466: '</font></td></tr>'.$/;
1467: my $startdateform = &Apache::lonhtmlcommon::date_setter
1468: ('Statistics','startdate_'.$i,$starttime);
1469: my $enddateform = &Apache::lonhtmlcommon::date_setter
1470: ('Statistics','enddate_'.$i,$endtime);
1471: #
1472: my $begin_index;
1473: my $end_index;
1474: my $j;
1475: while (++$j < scalar(@$performance_data)) {
1476: last if (&get_time_from_row($performance_data->[$j])
1477: > $starttime);
1478: }
1479: $begin_index = $j;
1480: while ($j < scalar(@$performance_data)) {
1481: if (&get_time_from_row($performance_data->[$j]) > $endtime) {
1482: last;
1483: } else {
1484: $j++;
1485: }
1486: }
1487: $end_index = $j;
1488: ##
1489: my ($processed_time_data,$correct,$data_count,$student_count) =
1490: &OR_time_process_data($performance_data,$begin_index,$end_index);
1491: $correct |= 0;
1492: ##
1493: $table .= '<tr><td colspan="4" align="center"><font size="+1">'.
1494: &mt('[_1] submissions from [_2] students, [_3] correct, [_4] incorrect',
1495: $data_count,$student_count,$correct,$data_count-$correct).
1496: '</font></td></tr>'.$/;
1497: my $concept_correct_plot = '';
1498: if ($num_concepts > 1) {
1499: $concept_correct_plot =
1500: &OR_Concept_Time_Analysis($processed_time_data,
1501: $correct,$data_count,$student_count,
1502: $ORdata,$Concepts);
1503: }
1504: my ($foil_correct_plot,$foil_incorrect_plot) =
1505: &OR_Foil_Time_Analysis($processed_time_data,
1506: $correct,$data_count,$student_count,
1507: $ORdata,$Foils,$Concepts);
1508: $table .= '<tr>'.
1509: '<td>'.$concept_correct_plot.'</td>'.
1510: '<td>'.$foil_correct_plot.'</td>'.
1511: '<td>'.$foil_incorrect_plot.'</td>'.
1512: '<td align="left" valign="top">'.$foilkey.'</td></tr>'.$/;
1513: $table .= '<tr><td colspan="4" align="center">'.
1514: &mt('Start time: [_1]',$startdateform).'<br />'.
1515: &mt('End time: [_1]',$enddateform).'</td></tr>'.$/;
1516: $table.= '<tr><td colspan="4"> </td></tr>'.$/;
1517: }
1518: $table .= '</table>';
1519: #
1520: return $table;
1521: }
1522:
1523: sub OR_Foil_Time_Analysis {
1524: my ($processed_time_data,$correct,$data_count,$student_count,
1525: $ORdata,$Foils,$Concepts) = @_;
1526: if ($data_count <= 0) {
1527: return ('<h2>'.&mt('There is no data to plot').'</h2>','');
1528: }
1529: my $analysis_html;
1530: my @plotdata;
1531: my @labels;
1532: foreach my $concept (@{$Concepts}) {
1533: foreach my $foil (@{$concept->{'foils'}}) {
1534: push(@labels,scalar(@labels)+1);
1535: my $total = $processed_time_data->{$foil}->{'_total'};
1536: if ($total == 0) {
1537: push(@{$plotdata[0]},0);
1538: } else {
1539: push(@{$plotdata[0]},
1540: 100 * $processed_time_data->{$foil}->{'_correct'} / $total);
1541: }
1542: my $total_incorrect = $total - $processed_time_data->{$foil}->{'_correct'};
1543: for (my $i=0;$i<scalar(@{$ORdata->{'_Options'}});$i++) {
1544: my $option = $ORdata->{'_Options'}->[$i];
1545: if ($total_incorrect == 0) {
1546: push(@{$plotdata[$i+1]},0);
1547: } else {
1548: push(@{$plotdata[$i+1]},
1549: 100 * $processed_time_data->{$foil}->{$option} / $total_incorrect);
1550: }
1551: }
1552: }
1553: # Put in a blank one
1554: push(@labels,'');
1555: push(@{$plotdata[0]},0);
1556: for (my $i=0;$i<scalar(@{$ORdata->{'_Options'}});$i++) {
1557: push(@{$plotdata[$i+1]},0);
1558: }
1559: }
1560: #
1561: # Create the plot
1562: my $correct_plot = &Apache::loncommon::DrawBarGraph('Correct Statements',
1563: 'Statement Number',
1564: 'Percent Correct',
1565: 100,
1566: $plotcolors,
1567: undef,
1568: $plotdata[0],
1569: {xskip=>1});
1570: for (my $j=0; $j< scalar(@{$plotdata[0]});$j++) {
1571: $plotdata[0]->[$j]=0;
1572: }
1573: my $incorrect_plot =
1574: &Apache::loncommon::DrawBarGraph('Incorrect Statements',
1575: 'Statement Number',
1576: 'Incorrect Option Choice',
1577: 100,
1578: $plotcolors,
1579: undef,
1580: @plotdata,{xskip=>1});
1581: return ($correct_plot,$incorrect_plot);
1582: }
1583:
1584: sub OR_Concept_Time_Analysis {
1585: my ($processed_time_data,$correct,$data_count,$student_count,
1586: $ORdata,$Concepts) = @_;
1587: return '' if ($data_count == 0);
1588: #
1589: # Put the data in plottable form
1590: my @plotdata;
1591: foreach my $concept (@$Concepts) {
1592: my ($total,$correct);
1593: foreach my $foil (@{$concept->{'foils'}}) {
1594: $total += $processed_time_data->{$foil}->{'_total'};
1595: $correct += $processed_time_data->{$foil}->{'_correct'};
1596: }
1597: if ($total == 0) {
1598: push(@plotdata,0);
1599: } else {
1600: push(@plotdata,100 * $correct / $total);
1601: }
1602: }
1603: #
1604: # Create the plot
1605: return &Apache::loncommon::DrawBarGraph('Correct Concepts',
1606: 'Concept Number',
1607: 'Percent Correct',
1608: 100,
1609: $plotcolors,
1610: undef,
1611: \@plotdata,{xskip=>1});
1612: }
1613:
1614: sub OR_time_process_data {
1615: my ($performance_data,$begin_index,$end_index)=@_;
1616: my %processed_time_data;
1617: my %distinct_students;
1618: my ($correct,$data_count);
1619: if (($begin_index == $end_index) &&
1620: ($end_index != scalar(@$performance_data)-1)) {
1621: return undef;
1622: }
1623: # Be sure we include the last one if we are asked for it.
1624: # That we have to correct here (and not when $end_index is
1625: # given a value) should probably be considered a bug.
1626: if ($end_index == scalar(@$performance_data)-1) {
1627: $end_index++;
1628: }
1629: my $count;
1630: for (my $i=$begin_index;$i<$end_index;$i++) {
1631: my $attempt = $performance_data->[$i];
1632: $count++;
1633: next if (! defined($attempt));
1634: my %attempt = &Process_OR_Row($attempt);
1635: $data_count++;
1636: $correct += $attempt{'_correct'};
1637: $distinct_students{$attempt->[&Apache::loncoursedata::RD_student_id()]}++;
1638: while (my ($foilid,$href) = each(%attempt)) {
1639: if (! ref($href)) {
1640: $processed_time_data{$foilid} += $href;
1641: next;
1642: }
1643: while (my ($option,$value) = each(%$href)) {
1644: $processed_time_data{$foilid}->{$option}+=$value;
1645: }
1646: }
1647: }
1648: return (\%processed_time_data,$correct,$data_count,
1649: scalar(keys(%distinct_students)));
1650: }
1651:
1652: sub build_foil_index {
1653: my ($ORdata) = @_;
1654: return if (! exists($ORdata->{'_Foils'}));
1655: my %Foildata = %{$ORdata->{'_Foils'}};
1656: my @Foils = sort(keys(%Foildata));
1657: my %Concepts;
1658: foreach my $foilid (@Foils) {
1659: push(@{$Concepts{$Foildata{$foilid}->{'_Concept'}}},
1660: $foilid);
1661: }
1662: undef(@Foils);
1663: # Having gathered the concept information in a hash, we now translate it
1664: # into an array because we need to be consistent about order.
1665: # Also put the foils in order, too.
1666: my $sortfunction = sub {
1667: my %Numbers = (one => 1,
1668: two => 2,
1669: three => 3,
1670: four => 4,
1671: five => 5,
1672: six => 6,
1673: seven => 7,
1674: eight => 8,
1675: nine => 9,
1676: ten => 10,);
1677: my $a1 = lc($a);
1678: my $b1 = lc($b);
1679: if (exists($Numbers{$a1})) {
1680: $a1 = $Numbers{$a1};
1681: }
1682: if (exists($Numbers{$b1})) {
1683: $b1 = $Numbers{$b1};
1684: }
1685: if (($a1 =~/^\d+$/) && ($b1 =~/^\d+$/)) {
1686: return $a1 <=> $b1;
1687: } else {
1688: return $a1 cmp $b1;
1689: }
1690: };
1691: my @Concepts;
1692: foreach my $concept (sort $sortfunction (keys(%Concepts))) {
1693: if (! defined($Concepts{$concept})) {
1694: $Concepts{$concept}=[];
1695: # next;
1696: }
1697: push(@Concepts,{ name => $concept,
1698: foils => [@{$Concepts{$concept}}]});
1699: push(@Foils,(@{$Concepts{$concept}}));
1700: }
1701: #
1702: # Build up the table of row labels.
1703: my $table = '<table border="1" >'."\n";
1704: if (@Concepts > 1) {
1705: $table .= '<tr>'.
1706: '<th>'.&mt('Concept Number').'</th>'.
1707: '<th>'.&mt('Concept').'</th>'.
1708: '<th>'.&mt('Foil Number').'</th>'.
1709: '<th>'.&mt('Foil Name').'</th>'.
1710: '<th>'.&mt('Foil Text').'</th>'.
1711: '<th>'.&mt('Correct Value').'</th>'.
1712: "</tr>\n";
1713: } else {
1714: $table .= '<tr>'.
1715: '<th>'.&mt('Foil Number').'</th>'.
1716: '<th>'.&mt('Foil Name').'</th>'.
1717: '<th>'.&mt('Foil Text').'</th>'.
1718: '<th>'.&mt('Correct Value').'</th>'.
1719: "</tr>\n";
1720: }
1721: my $conceptindex = 1;
1722: my $foilindex = 1;
1723: foreach my $concept (@Concepts) {
1724: my @FoilsInConcept = @{$concept->{'foils'}};
1725: my $firstfoil = shift(@FoilsInConcept);
1726: if (@Concepts > 1) {
1727: $table .= '<tr>'.
1728: '<td>'.$conceptindex.'</td>'.
1729: '<td>'.&HTML::Entities::encode($concept->{'name'},'<>&"').'</td>'.
1730: '<td>'.$foilindex++.'</td>'.
1731: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'name'},'<>&"').'</td>'.
1732: '<td>'.$Foildata{$firstfoil}->{'text'}.'</td>'.
1733: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'value'},'<>&"').'</td>'.
1734: "</tr>\n";
1735: } else {
1736: $table .= '<tr>'.
1737: '<td>'.$foilindex++.'</td>'.
1738: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'name'},'<>&"').'</td>'.
1739: '<td>'.$Foildata{$firstfoil}->{'text'}.'</td>'.
1740: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'value'},'<>&"').'</td>'.
1741: "</tr>\n";
1742: }
1743: foreach my $foilid (@FoilsInConcept) {
1744: if (@Concepts > 1) {
1745: $table .= '<tr>'.
1746: '<td></td>'.
1747: '<td></td>'.
1748: '<td>'.$foilindex.'</td>'.
1749: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'name'},'<>&"').'</td>'.
1750: '<td>'.$Foildata{$foilid}->{'text'}.'</td>'.
1751: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'value'},'<>&"').'</td>'.
1752: "</tr>\n";
1753: } else {
1754: $table .= '<tr>'.
1755: '<td>'.$foilindex.'</td>'.
1756: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'name'},'<>&"').'</td>'.
1757: '<td>'.$Foildata{$foilid}->{'text'}.'</td>'.
1758: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'value'},'<>&"').'</td>'.
1759: "</tr>\n";
1760: }
1761: } continue {
1762: $foilindex++;
1763: }
1764: } continue {
1765: $conceptindex++;
1766: }
1767: $table .= "</table>\n";
1768: #
1769: # Build option index with color stuff
1770: return ($table,\@Foils,\@Concepts);
1771: }
1772:
1773: sub build_option_index {
1774: my ($ORdata)= @_;
1775: my $table = "<table>\n";
1776: my $optionindex = 0;
1777: my @Rows;
1778: foreach my $option (&mt('correct option chosen'),@{$ORdata->{'_Options'}}) {
1779: my $color = $plotcolors->[$optionindex++];
1780: push (@Rows,
1781: '<tr>'.
1782: '<td bgcolor="'.$color.'">'.
1783: '<font color="'.$color.'">'.('*'x3).'</font>'.'</td>'.
1784: '<td>'.&HTML::Entities::encode($option,'<>&"').'</td>'.
1785: "</tr>\n");
1786: }
1787: shift(@Rows); # Throw away 'correct option chosen' color
1788: $table .= join('',reverse(@Rows));
1789: $table .= "</table>\n";
1790: }
1791:
1792: sub build_foil_key {
1793: my ($foils,$extra_data)= @_;
1794: if (! defined($extra_data)) { $extra_data = {}; }
1795: my $table = "<table>\n";
1796: my $foil_index = 0;
1797: my @rows;
1798: foreach my $foil (&mt('correct foil chosen'),@{$foils}) {
1799: my $color = $plotcolors->[$foil_index++];
1800: push (@rows,
1801: '<tr>'.
1802: '<td bgcolor="'.$color.'" class="key">'.
1803: '<font color="'.$color.'">'.('*'x4).'</font></td>'.
1804: '<td>'.&HTML::Entities::encode($foil,'<>&"').
1805: (' 'x2).$extra_data->{$foil}.'</td>'.
1806: "</tr>\n");
1807: }
1808: shift(@rows); # Throw away 'correct foil chosen' color
1809: $table .= join('',reverse(@rows));
1810: $table .= "</table>\n";
1811: }
1812:
1813: #########################################################
1814: #########################################################
1815: ##
1816: ## Generic Interface Routines
1817: ##
1818: #########################################################
1819: #########################################################
1820: sub CreateInterface {
1821: ##
1822: ## Environment variable initialization
1823: if (! exists($env{'form.AnalyzeOver'})) {
1824: $env{'form.AnalyzeOver'} = 'tries';
1825: }
1826: ##
1827: ## Build the menu
1828: my $Str = '';
1829: $Str .= &Apache::lonhtmlcommon::breadcrumbs('Detailed Problem Analysis');
1830: $Str .= '<table cellspacing="5">'."\n";
1831: $Str .= '<tr>';
1832: $Str .= '<td align="center"><b>'.&mt('Sections').'</b></td>';
1833: $Str .= '<td align="center"><b>'.&mt('Enrollment Status').'</b></td>';
1834: $Str .= '<td align="center"> </td>';
1835: $Str .= '</tr>'."\n";
1836: ##
1837: ##
1838: $Str .= '<tr><td align="center">'."\n";
1839: $Str .= &Apache::lonstatistics::SectionSelect('Section','multiple',5);
1840: $Str .= '</td>';
1841: #
1842: $Str .= '<td align="center">';
1843: $Str .= &Apache::lonhtmlcommon::StatusOptions(undef,undef,5);
1844: $Str .= '</td>';
1845: #
1846: ##
1847: ##
1848: $Str .= '<td>';
1849: ##
1850: my $showprob_checkbox =
1851: '<input type="checkbox" name="show_prob" value="true" ';
1852: if ($env{'form.show_prob'} eq 'true') {
1853: $showprob_checkbox .= 'checked ';
1854: }
1855: $showprob_checkbox.= ' />';
1856: $Str.= '<nobr><label>'.
1857: &mt('Show problem [_1]',$showprob_checkbox).
1858: '</label></nobr><br />';
1859: ##
1860: my $analyze_selector = '<select name="AnalyzeOver" >';
1861: $analyze_selector .= '<option value="tries" ';
1862: if (! exists($env{'form.AnalyzeOver'}) ||
1863: $env{'form.AnalyzeOver'} eq 'tries'){
1864: # Default to tries
1865: $analyze_selector .= ' selected ';
1866: }
1867: $analyze_selector .= '>'.&mt('Tries').'</option>';
1868: $analyze_selector .= '<option value="time" ';
1869: $analyze_selector .= ' selected ' if ($env{'form.AnalyzeOver'} eq 'time');
1870: $analyze_selector .= '>'.&mt('Time').'</option>';
1871: $analyze_selector .= '</select>';
1872: $Str .= '<nobr><label>'.
1873: &mt('Analyze Over [_1] [_2]',
1874: $analyze_selector,
1875: &Apache::loncommon::help_open_topic('Analysis_Analyze_Over')).
1876: '</label></nobr><br />'.$/;
1877: ##
1878: my $numplots_selector = '<select name="NumPlots">';
1879: if (! exists($env{'form.NumPlots'})
1880: || $env{'form.NumPlots'} < 1
1881: || $env{'form.NumPlots'} > 20) {
1882: $env{'form.NumPlots'} = 5;
1883: }
1884: foreach my $i (1,2,3,4,5,6,7,8,10,15,20) {
1885: $numplots_selector .= '<option value="'.$i.'" ';
1886: if ($env{'form.NumPlots'} == $i) { $numplots_selector.=' selected '; }
1887: $numplots_selector .= '>'.$i.'</option>';
1888: }
1889: $numplots_selector .= '</select></nobr><br />';
1890: $Str .= '<nobr><label>'.&mt('Number of Plots [_1]',$numplots_selector).
1891: '</label></nobr>';
1892: ##
1893: $Str .= '<nobr><label>'.&mt('Status: [_1]',
1894: '<input type="text" '.
1895: 'name="stats_status" size="60" value="" />'
1896: ).
1897: '</label></nobr>';
1898: $Str .= '</td>';
1899: ##
1900: ##
1901: $Str .= '</tr>'."\n";
1902: $Str .= '</table>'."\n";
1903: return $Str;
1904: }
1905:
1906: #########################################################
1907: #########################################################
1908: ##
1909: ## Misc Option Response functions
1910: ##
1911: #########################################################
1912: #########################################################
1913: sub get_time_from_row {
1914: my ($row) = @_;
1915: if (ref($row)) {
1916: return $row->[&Apache::loncoursedata::RD_timestamp()];
1917: }
1918: return undef;
1919: }
1920:
1921: sub get_tries_from_row {
1922: my ($row) = @_;
1923: if (ref($row)) {
1924: return $row->[&Apache::loncoursedata::RD_tries()];
1925: }
1926: return undef;
1927: }
1928:
1929: sub hashify_attempt {
1930: my ($row) = @_;
1931: my %attempt;
1932: $attempt{'student'} = $row->[&Apache::loncoursedata::RD_sname()];
1933: $attempt{'tries'} = $row->[&Apache::loncoursedata::RD_tries()];
1934: $attempt{'submission'} = &unescape($row->[&Apache::loncoursedata::RD_submission()]);
1935: $attempt{'award'} = $row->[&Apache::loncoursedata::RD_awarddetail()];
1936: $attempt{'timestamp'} = $row->[&Apache::loncoursedata::RD_timestamp()];
1937: return %attempt;
1938: }
1939:
1940: sub Process_OR_Row {
1941: my ($row) = @_;
1942: my %RowData;
1943: # my $student_id = $row->[&Apache::loncoursedata::RD_student_id()];
1944: my $award = $row->[&Apache::loncoursedata::RD_awarddetail()];
1945: my $grading = $row->[&Apache::loncoursedata::RD_response_eval()];
1946: my $submission = $row->[&Apache::loncoursedata::RD_submission()];
1947: my $time = $row->[&Apache::loncoursedata::RD_timestamp()];
1948: # my $tries = $row->[&Apache::loncoursedata::RD_tries()];
1949: return undef if ($award eq 'MISSING_ANSWER');
1950: if (&submission_is_correct($award)) {
1951: $RowData{'_correct'} = 1;
1952: }
1953: $RowData{'_total'} = 1;
1954: my @Foilgrades = split('&',$grading);
1955: my @Foilsubs = split('&',$submission);
1956: for (my $j=0;$j<=$#Foilgrades;$j++) {
1957: my ($foilid,$correct) = split('=',$Foilgrades[$j]);
1958: $foilid = &unescape($foilid);
1959: my (undef,$submission) = split('=',$Foilsubs[$j]);
1960: if ($correct) {
1961: $RowData{$foilid}->{'_correct'}++;
1962: } else {
1963: $submission = &unescape($submission);
1964: $RowData{$foilid}->{$submission}++;
1965: }
1966: $RowData{$foilid}->{'_total'}++;
1967: }
1968: return %RowData;
1969: }
1970:
1971: sub submission_is_correct {
1972: my ($award) = @_;
1973: if ($award =~ /(APPROX_ANS|EXACT_ANS)/) {
1974: return 1;
1975: } else {
1976: return 0;
1977: }
1978: }
1979:
1980: 1;
1981:
1982: __END__
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