1: # The LearningOnline Network with CAPA
2: #
3: # $Id: lonproblemanalysis.pm,v 1.123 2006/01/22 04:10:04 bowersj2 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 (($high_bin -$low_bin)/$min_bin_size * 2 > $max_bins) {
405: $min_bin_size = abs($high_bin - $low_bin) / $max_bins * 2;
406: }
407: my @bins;
408: for (my $num = $low_bin;$num <= $high_bin;$num+=($min_bin_size/2)) {
409: push(@bins,$num);
410: }
411: #
412: my @correct;
413: my @incorrect;
414: my @count;
415: while (my ($ans,$submissions) = each(%$responses)) {
416: while (my ($submission,$counts) = each(%$submissions)) {
417: my ($correct_count,$incorrect_count) = @$counts;
418: my $scaled_value = $submission-$ans;
419: if ($scaled_value < $bins[0]) {
420: $bins[0]=$scaled_value-1;
421: }
422: my $bin=0;
423: for ($bin=0;$bin<$#bins;$bin++) {
424: last if ($bins[$bin]>$scaled_value);
425: }
426: $correct[$bin-1]+=$correct_count;
427: $incorrect[$bin-1]+=$incorrect_count;
428: $count[$bin-1]+=$correct_count+$incorrect_count;
429: }
430: }
431: my @plot_correct = @correct;
432: my @plot_incorrect = @incorrect;
433: my $max;
434: for (my $i=0;$i<=$#bins;$i++) {
435: $plot_correct[$i] *= 100/$total;
436: $plot_incorrect[$i] *= 100/$total;
437: if (! defined($max) ||
438: $max < $plot_correct[$i]+$plot_incorrect[$i] ) {
439: $max = $plot_correct[$i]+$plot_incorrect[$i];
440: }
441: }
442: foreach (qw/1 5 10 15 20 25 30 40 50 75 100/) {
443: if ($max <$_) { $max = $_; last; }
444: }
445: #
446: my $title = &mt('Difference between submission and correct');
447: my @labels = (1..scalar(@bins)-1);
448: my $graph = &Apache::loncommon::DrawBarGraph
449: ($title,'Difference from Correct','Percent of Answers',
450: $max,['#33FF00','#FF3300'],\@labels,\@plot_correct,\@plot_incorrect,
451: {xskip=>1});
452: #
453: my $table = $graph.$/.
454: &numerical_bin_table(\@bins,\@labels,\@incorrect,\@correct,\@count).$/;
455: return $table;
456: }
457:
458: sub numerical_classify_responses {
459: my ($full_row_data,$correct,$function) = @_;
460: my %submission_data;
461: my %students;
462: my %stats;
463: my $max=0;
464: foreach my $row (@$full_row_data) {
465: my %subm = &hashify_attempt($row);
466: if (ref($correct) eq 'HASH') {
467: my $s_correct = $correct->{$subm{'student'}};
468: $subm{'correct'} = $s_correct->{'answer'};
469: foreach my $item ('unit','ans_low','ans_high') {
470: $subm{$item} = $s_correct->{$item};
471: }
472: } else { # This probably never happens....
473: $subm{'correct'} = $correct->{'answer'};
474: $subm{'unit'} = $correct->{'unit'};
475: }
476: #
477: my $abs_low =abs($subm{'correct'}-$subm{'ans_low'});
478: my $abs_high=abs($subm{'correct'}-$subm{'ans_high'});
479: if (! defined($stats{'min_abs'}) ||
480: $stats{'min_abs'} > $abs_low) {
481: $stats{'min_abs'} = $abs_low;
482: }
483: if ($stats{'min_abs'} > $abs_high) {
484: $stats{'min_abs'} = $abs_high;
485: }
486: if (! defined($stats{'max_abs'}) ||
487: $stats{'max_abs'} < $abs_low) {
488: $stats{'max_abs'} = $abs_low;
489: }
490: if ($stats{'max_abs'} < $abs_high) {
491: $stats{'max_abs'} = $abs_high;
492: }
493: my $low_percent;
494: my $high_percent;
495: if (defined($subm{'correct'}) && $subm{'correct'} != 0) {
496: $low_percent = 100 * abs($abs_low / $subm{'correct'});
497: $high_percent = 100 * abs($abs_high / $subm{'correct'});
498: }
499: if (! defined($stats{'min_percent'}) ||
500: $stats{'min_percent'} > $low_percent) {
501: $stats{'min_percent'} = $low_percent;
502: }
503: if ($stats{'min_percent'} > $high_percent) {
504: $stats{'min_percent'} = $high_percent;
505: }
506: if (! defined($stats{'max_percent'}) ||
507: $stats{'max_percent'} < $low_percent) {
508: $stats{'max_percent'} = $low_percent;
509: }
510: if ($stats{'max_percent'} < $high_percent) {
511: $stats{'max_percent'} = $high_percent;
512: }
513: if (! defined($stats{'lowest_ans'}) ||
514: $stats{'lowest_ans'} > $subm{'correct'}) {
515: $stats{'lowest_ans'} = $subm{'correct'};
516: }
517: if (! defined($stats{'highest_ans'}) ||
518: $stats{'highest_ans'} < $subm{'correct'}) {
519: $stats{'highest_ans'} = $subm{'correct'};
520: }
521: #
522: $subm{'submission'} =~ s/=\d+\s*$//;
523: if (&$function(\%subm)) {
524: my $scaled = '1';
525: my ($sname,$sdom) = split(':',$subm{'student'});
526: my ($myunit,$mysub) = ($subm{'unit'},$subm{'submission'});
527: my $result =
528: &capa::caparesponse_get_real_response($myunit,
529: $mysub,
530: \$scaled);
531: # &Apache::lonnet::logthis('scaled = '.$scaled.' result ='.$result);
532: next if (! defined($scaled));
533: # next if ($result ne '6');
534: my $submission = $scaled;
535: $students{$subm{'student'}}++;
536: $stats{'submission_count'}++;
537: if (&numerical_submission_is_correct($subm{'award'})) {
538: $stats{'correct_count'}++;
539: $submission_data{$subm{'correct'}}->{$submission}->[0]++;
540: } elsif (&numerical_submission_is_incorrect($subm{'award'})) {
541: $stats{'incorrect_count'}++;
542: $submission_data{$subm{'correct'}}->{$submission}->[1]++;
543: }
544: }
545: }
546: $stats{'correct_count'} |= 0;
547: $stats{'incorrect_count'} |= 0;
548: $stats{'students'}=scalar(keys(%students));
549: return (\%submission_data,\%stats);
550: }
551:
552: sub numerical_submission_is_correct {
553: my ($award) = @_;
554: if ($award =~ /^(APPROX_ANS|EXACT_ANS)$/) {
555: return 1;
556: } else {
557: return 0;
558: }
559: }
560:
561: sub numerical_submission_is_incorrect {
562: my ($award) = @_;
563: if ($award =~ /^(INCORRECT)$/) {
564: return 1;
565: } else {
566: return 0;
567: }
568: }
569:
570: sub numerical_bin_table {
571: my ($bins,$labels,$incorrect,$correct,$count)=@_;
572: my $table =
573: '<table><tr><th>'.&mt('Bar').'</th>'.
574: '<th colspan="3">'.&mt('Range').'</th>'.
575: '<th>'.&mt('Incorrect').'</th>'.
576: '<th>'.&mt('Correct').'</th>'.
577: '<th>'.&mt('Count').'</th>'.
578: '</tr>'.$/;
579: for (my $i=0;$i<scalar(@{$bins}-1);$i++) {
580: my $lownum = $bins->[$i];
581: if ($i == 0) { $lownum = '-∞'; }
582: my $highnum = $bins->[$i+1];
583: if ($i == scalar(@{$bins})-2) { $highnum = '∞'; }
584: $table .=
585: '<tr>'.
586: '<td>'.$labels->[$i].'</td>'.
587: '<td align="right">'.$lownum.'</td>'.
588: '<td> - </td>'.
589: '<td align="right">'.$highnum.'</td>'.
590: '<td align="right">'.$incorrect->[$i].'</td>'.
591: '<td align="right">'.$correct->[$i].'</td>'.
592: '<td align="right">'.$count->[$i].'</td>'.
593: '</tr>'.$/;
594: }
595: $table.= '</table>';
596: return $table;
597: }
598:
599: sub numerical_determine_answers {
600: my ($r,$resource,$partid,$respid,$students)=@_;
601: my $c = $r->connection();
602: #
603: my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin
604: ($r,'Student Answer Compilation Status',
605: 'Student Answer Compilation Progress', scalar(@$students),
606: 'inline',undef,'Statistics','stats_status');
607: #
608: # Read in the cache (if it exists) before we start timing things.
609: &Apache::lonstathelpers::ensure_proper_cache($resource->{'symb'});
610: #
611: my $correct;
612: my %answers;
613: foreach my $student (@$students) {
614: last if ($c->aborted());
615: my $sname = $student->{'username'};
616: my $sdom = $student->{'domain'};
617: # analyze problem
618: my $analysis =
619: &Apache::lonstathelpers::analyze_problem_as_student($resource,
620: $sname,
621: $sdom);
622: # make the key
623: my $key = $partid.'.'.$respid;
624: foreach my $item ('answer','unit','ans_high','ans_low') {
625: $correct->{$sname.':'.$sdom}->{$item} =
626: $analysis->{$key.'.'.$item}->[0];
627: }
628: $answers{$analysis->{$key.'.answer'}->[0]}++;
629: &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
630: &mt('last student'));
631: }
632: &Apache::lonstathelpers::write_analysis_cache();
633: &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
634: return ($correct,\%answers);
635: }
636:
637: #
638: # Inputs: $r, $width, $height, $data
639: # $n = number of students
640: # $data = hashref of $answer => $frequency pairs
641: sub numerical_one_dimensional_plot {
642: my ($r,$width,$height,$data)=@_;
643: #
644: # Compute data -> image scaling factors
645: my $max_y = 0;
646: my $min_x = undef;
647: my $max_x = undef;
648: my $n = 0;
649: while (my ($answer,$count) = each(%$data)) {
650: $n+=$count;
651: $max_y = $count if ($max_y < $count);
652: if (! defined($min_x) || $answer < $min_x) {
653: $min_x = $answer;
654: }
655: if (! defined($max_x) || $answer > $max_x) {
656: $max_x = $answer;
657: }
658: }
659: #
660: my $min_max_difference = $max_x - $min_x;
661: if (! defined($min_max_difference) || $min_max_difference == 0) {
662: $min_max_difference = 1;
663: }
664: my $h_scale = ($width-10)/$min_max_difference;
665: #
666: my $ticscale = 5;
667: if ($max_y * $ticscale > $height/2) {
668: $ticscale = int($height/2/$max_y);
669: $ticscale = 1 if ($ticscale < 1);
670: }
671: #
672: # Create the plot
673: my $plot =
674: qq{<drawimage width="$width" height="$height" bgcolor="transparent" >};
675: while (my ($answer,$count) = each(%$data)) {
676: my $xloc = 5+$h_scale*($answer - $min_x);
677: my $top = $height/2-$count*$ticscale;
678: my $bottom = $height/2+$count*$ticscale;
679: $plot .= &line($xloc,$top,$xloc,$bottom,'888888',1);
680: }
681: #
682: # Put the scale on last to ensure it is on top of the data.
683: if ($min_x < 0 && $max_x > 0) {
684: my $circle_x = 5+$h_scale*abs($min_x); # '0' in data coordinates
685: my $r = 4;
686: $plot .= &line(5,$height/2,$circle_x-$r,$height/2,'000000',1);
687: $plot .= &circle($circle_x,$height/2,$r+1,'000000');
688: $plot .= &line($circle_x+$r,$height/2,$width-5,$height/2,'000000',1);
689: } else {
690: $plot .= &line(5,$height/2,$width-5,$height/2,'000000',1);
691: }
692: $plot .= '</drawimage>';
693: my $plotresult = &Apache::lonxml::xmlparse($r,'web',$plot);
694: my $result = '<table>'.
695: '<tr><td colspan="3" align="center">'.
696: '<font size="+2">'.&mt('Distribution of correct answers').'</font>'.
697: '<br />'.&mt('[_1] students, [_2] distinct correct answers',
698: $n,scalar(keys(%$data))).
699: '<br />'.&mt('Maximum number of coinciding values: [_1]',$max_y).
700: '</td></tr>'.
701: '<tr>'.
702: '<td valign="center">'.$min_x.'</td>'.
703: '<td>'.$plotresult.'</td>'.
704: '<td valign="center">'.$max_x.'</td>'.
705: '</tr>'.
706: '</table>';
707: return $result;
708: }
709:
710: ##
711: ## Helper subroutines for <drawimage>.
712: ## These should probably go somewhere more suitable soon.
713: sub line {
714: my ($x1,$y1,$x2,$y2,$color,$thickness) = @_;
715: return qq{<line x1="$x1" y1="$y1" x2="$x2" y2="$y2" color="$color" thickness="$thickness" />};
716: }
717:
718: sub text {
719: my ($x,$y,$color,$text,$font,$direction) = @_;
720: if (! defined($font) || $font !~ /^(tiny|small|medium|large|giant)$/) {
721: $font = 'medium';
722: }
723: if (! defined($direction) || $direction ne 'vertical') {
724: $direction = '';
725: }
726: return qq{<text x="$x" y="$y" color="$color" font="$font" direction="$direction" >$text</text>};
727: }
728:
729: sub rectangle {
730: my ($x1,$y1,$x2,$y2,$color,$thickness,$filled) = @_;
731: return qq{<rectangle x1="$x1" y1="$y1" x2="$x2" y2="$y2" color="$color" thickness="$thickness" filled="$filled" />};
732: }
733:
734: sub arc {
735: my ($x,$y,$width,$height,$start,$end,$color,$thickness,$filled)=@_;
736: return qq{<arc x="$x" y="$y" width="$width" height="$height" start="$start" end="$end" color="$color" thickness="$thickness" filled="$filled" />};
737: }
738:
739: sub circle {
740: my ($x,$y,$radius,$color,$thickness,$filled)=@_;
741: return &arc($x,$y,$radius,$radius,0,360,$color,$thickness,$filled);
742: }
743:
744: #########################################################
745: #########################################################
746: ##
747: ## Radio Response Routines
748: ##
749: #########################################################
750: #########################################################
751: sub radio_response_analysis {
752: my ($r,$problem,$problem_analysis,$students) = @_;
753: #
754: if ($env{'form.AnalyzeOver'} !~ /^(tries|time)$/) {
755: $r->print('Bad request');
756: }
757: #
758: my ($resource,$partid,$respid) = ($problem->{'resource'},
759: $problem->{'part'},
760: $problem->{'respid'});
761: #
762: my $analysis_html;
763: my $foildata = $problem_analysis->{'_Foils'};
764: my ($table,$foils,$concepts) = &build_foil_index($problem_analysis);
765: if (! defined($concepts)) {
766: $concepts = [];
767: }
768: #
769: my %true_foils;
770: my $num_true = 0;
771: if (! $problem_analysis->{'answercomputed'}) {
772: foreach my $foil (@$foils) {
773: if ($foildata->{$foil}->{'value'} eq 'true') {
774: $true_foils{$foil}++;
775: }
776: }
777: $num_true = scalar(keys(%true_foils));
778: }
779: #
780: $analysis_html .= $table;
781: # Gather student data
782: my $response_data = &Apache::loncoursedata::get_response_data
783: ([&Apache::lonstatistics::get_selected_sections()],
784: $Apache::lonstatistics::enrollment_status,
785: $resource->symb,$respid);
786: my $correct; # either a hash reference or a scalar
787: if ($problem_analysis->{'answercomputed'} || scalar(@$concepts) > 1) {
788: # This takes a while for large classes...
789: &Apache::lonstathelpers::GetStudentAnswers($r,$problem,$students,
790: 'Statistics',
791: 'stats_status');
792: foreach my $student (@$students) {
793: my ($idx,@remainder) = split('&',$student->{'answer'});
794: my ($answer) = ($remainder[$idx]=~/^(.*)=([^=]*)$/);
795: $correct->{$student->{'username'}.':'.$student->{'domain'}}=
796: &Apache::lonnet::unescape($answer);
797: }
798: } else {
799: foreach my $foil (keys(%$foildata)) {
800: if ($foildata->{$foil}->{'value'} eq 'true') {
801: $correct = $foildata->{$foil}->{'name'};
802: }
803: }
804: }
805: #
806: if (! defined($response_data) || ref($response_data) ne 'ARRAY' ) {
807: $analysis_html = '<h2>'.
808: &mt('There is no submission data for this resource').
809: '</h2>';
810: $r->print($analysis_html);
811: return;
812: }
813: #
814: $analysis_html.='<table>';
815: for (my $plot_num = 1;$plot_num<=$env{'form.NumPlots'};$plot_num++) {
816: # classify data ->correct foil -> selected foil
817: my ($restriction_function,
818: $correct_foil_title,$incorrect_foil_title,
819: $pre_graph_text,$post_graph_text,
820: $no_data_text,@extra_data);
821: if ($env{'form.AnalyzeOver'} eq 'tries') {
822: $restriction_function = sub {($_[0]->{'tries'} == $plot_num?1:0)};
823: $correct_foil_title = 'Attempt '.$plot_num;
824: $incorrect_foil_title = 'Attempt '.$plot_num;
825: $pre_graph_text =
826: 'Attempt [_1], [_2] submissions, [_3] correct, [_4] incorrect';
827: $post_graph_text = '';
828: $no_data_text = 'No data exists for attempt [_1]';
829: } elsif ($env{'form.AnalyzeOver'} eq 'time') {
830: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
831: ('startdate_'.$plot_num);
832: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
833: ('enddate_'.$plot_num);
834: ($starttime,$endtime) = &ensure_start_end_times
835: ($starttime,$endtime,
836: &get_time_from_row($response_data->[0]),
837: &get_time_from_row($response_data->[-1]),
838: $plot_num);
839: $pre_graph_text =
840: 'Data from [_6] to [_7]<br /> [_2] submissions from [_5] students, [_3] correct, [_4] incorrect';
841: $extra_data[0] = &Apache::lonlocal::locallocaltime($starttime);
842: $extra_data[1] = &Apache::lonlocal::locallocaltime($endtime);
843: #
844: $post_graph_text =
845: &mt('Start time: [_1]',
846: &Apache::lonhtmlcommon::date_setter
847: ('Statistics','startdate_'.$plot_num,$starttime)).
848: '<br />'.
849: &mt('End time: [_1]',
850: &Apache::lonhtmlcommon::date_setter
851: ('Statistics','enddate_'.$plot_num,$endtime));
852: $restriction_function =
853: sub {
854: my $t = $_[0]->{'timestamp'};
855: if ($t >= $starttime && $t < $endtime) {
856: return 1;
857: } else {
858: return 0;
859: }
860: };
861: $no_data_text = 'No data for [_5] to [_6]';
862: }
863: my $foil_choice_data =
864: &classify_response_data($response_data,$correct,
865: $restriction_function);
866: # &Apache::lonstathelpers::log_hash_ref($foil_choice_data);
867: my $answers;
868: if (ref($correct)) {
869: my %tmp;
870: foreach my $foil (values(%$correct)) {
871: $tmp{$foil}++;
872: }
873: $answers = [keys(%tmp)];
874: } else {
875: $answers = [$correct];
876: }
877: # Concept Plot
878: my $concept_plot = '';
879: if (scalar(@$concepts) > 1) {
880: $concept_plot = &RR_concept_plot($concepts,$foil_choice_data,
881: 'Correct Concepts');
882: }
883: # % Choosing plot
884: my $choice_plot = &RR_create_percent_selected_plot
885: ($concepts,$foils,$foil_choice_data,$correct_foil_title);
886: # for each correct foil, how did they mark it? (stacked bar graph)
887: my ($stacked_plot,$count_by_foil);
888: if ($problem_analysis->{'answercomputed'} || $num_true > 1) {
889: ($stacked_plot,$count_by_foil) =
890: &RR_create_stacked_selection_plot($foils,$foil_choice_data,
891: $incorrect_foil_title,
892: \%true_foils);
893: }
894: #
895: if ($concept_plot ne '' ||
896: $choice_plot ne '' ||
897: $stacked_plot ne '') {
898: my $correct = $foil_choice_data->{'_correct'};
899: $correct |= 0;
900: my $incorrect = $foil_choice_data->{'_count'}-$correct;
901: $analysis_html.= '<tr><td colspan="4" align="center">'.
902: '<font size="+1">'.
903: &mt($pre_graph_text,
904: $plot_num,$foil_choice_data->{'_count'},
905: $correct,
906: $incorrect,
907: $foil_choice_data->{'_students'},
908: @extra_data).
909: '</td></tr>'.$/;
910: $analysis_html.=
911: '<tr>'.
912: '<td>'.$concept_plot.'</td>'.
913: '<td>'.$choice_plot.'</td>';
914: if ($stacked_plot ne '') {
915: $analysis_html .=
916: '<td>'.$stacked_plot.'</td>'.
917: '<td>'.&build_foil_key($foils,$count_by_foil).'</td>';
918: } else {
919: $analysis_html .= ('<td></td>'x2);
920: }
921: $analysis_html.='</tr>'.$/;
922: if (defined($post_graph_text)) {
923: $analysis_html.= '<tr><td colspan="4" align="center">'.
924: $post_graph_text.'</td></tr>'.$/;
925: }
926: } elsif ($no_data_text ne '') {
927: $analysis_html.='<tr><td colspan="4" align="center">'.
928: &mt($no_data_text,
929: $plot_num,$foil_choice_data->{'_count'},
930: $correct,
931: $foil_choice_data->{'_count'}-$correct,
932: @extra_data);
933: if (defined($post_graph_text)) {
934: $analysis_html.='<br />'.$post_graph_text;
935: }
936: $analysis_html.='</td></tr>'.$/;
937: }
938: } # end of loop for plots
939: $analysis_html.='</table>';
940: $r->print($analysis_html);
941: }
942:
943: sub ensure_start_end_times {
944: my ($start,$end,$first,$last,$plot_num) = @_;
945: if (! defined($start) || ! defined($end)) {
946: my $sec_in_day = 86400;
947: my ($sday,$smon,$syear) =
948: (localtime($last - $sec_in_day*($plot_num-1)))[3..5];
949: $start = &Time::Local::timelocal(0,0,0,$sday,$smon,$syear);
950: $end = $start + $sec_in_day;
951: if ($plot_num == $env{'form.NumPlots'}) {
952: $start = $first;
953: }
954: }
955: return ($start,$end);
956: }
957:
958: sub RR_concept_plot {
959: my ($concepts,$foil_data,$title) = @_;
960: #
961: my %correct_by_concept;
962: my %incorrect_by_concept;
963: my %true;
964: foreach my $concept (@$concepts) {
965: foreach my $foil (@{$concept->{'foils'}}) {
966: next if (! exists($foil_data->{$foil}));
967: foreach my $choice (keys(%{$foil_data->{$foil}})) {
968: if ($choice eq $foil) {
969: $correct_by_concept{$concept->{'name'}} +=
970: $foil_data->{$foil}->{$choice};
971: } else {
972: $incorrect_by_concept{$concept->{'name'}} +=
973: $foil_data->{$foil}->{$choice};
974: }
975: }
976: }
977: }
978: #
979: # need arrays for incorrect and correct because we want to use different
980: # colors for them
981: my @correct;
982: #
983: my $total =0;
984: for (my $i=0;$i<scalar(@$concepts);$i++) {
985: my $concept = $concepts->[$i];
986: $correct[$i] = $correct_by_concept{$concept->{'name'}};
987: $total += $correct_by_concept{$concept->{'name'}}+
988: $incorrect_by_concept{$concept->{'name'}};
989: }
990: if ($total == 0) { return ''; };
991: for (my $i=0;$i<=$#correct;$i++) {
992: $correct[$i] = sprintf('%0f',$correct[$i]/$total*100);
993: }
994: my $xlabel = 'concept';
995: my $plot= &Apache::loncommon::DrawBarGraph($title,
996: $xlabel,
997: 'Percent Choosing',
998: 100,
999: ['#33ff00','#ff3300'],
1000: undef,
1001: \@correct);
1002: return $plot;
1003: }
1004:
1005: sub RR_create_percent_selected_plot {
1006: my ($concepts,$foils,$foil_data,$title) = @_;
1007: #
1008: if ($foil_data->{'_count'} == 0) { return ''; };
1009: my %correct_selections;
1010: my %incorrect_selections;
1011: foreach my $foil (@$foils) {
1012: # foil_data has format $foil_data->{true_foil}->{selected foil}=count
1013: next if (! exists($foil_data->{$foil}));
1014: while (my ($f,$count)= each(%{$foil_data->{$foil}})) {
1015: if ($f eq $foil) {
1016: $correct_selections{$foil} += $count;
1017: } else {
1018: $incorrect_selections{$f} += $count;
1019: }
1020: }
1021: }
1022: #
1023: # need arrays for incorrect and correct because we want to use different
1024: # colors for them
1025: my @correct;
1026: my @incorrect;
1027: #
1028: my $total = $foil_data->{'_count'};
1029: for (my $i=0;$i<scalar(@$foils);$i++) {
1030: my $foil = $foils->[$i];
1031: $correct[$i] = $correct_selections{$foil};
1032: $incorrect[$i] = $incorrect_selections{$foil};
1033: }
1034: for (my $i=0;$i<=$#correct;$i++) {
1035: $correct[$i] = sprintf('%2f',$correct[$i]/$total*100);
1036: }
1037: for (my $i=0;$i<=$#incorrect;$i++) {
1038: $incorrect[$i] = sprintf('%2f',$incorrect[$i]/$total*100);
1039: }
1040: #
1041: # Put a blank in the data sets between concepts, if there are concepts
1042: my @labels;
1043: if (defined($concepts) && scalar(@$concepts) > 1) {
1044: my @new_correct;
1045: my @new_incorrect;
1046: my $foil_count = 0;
1047: foreach my $concept (@$concepts) {
1048: foreach (@{$concept->{'foils'}}) {
1049: push(@new_correct, $correct[$foil_count]);
1050: push(@new_incorrect,$incorrect[$foil_count]);
1051: push(@labels,++$foil_count);
1052: }
1053: push(@new_correct,'');
1054: push(@new_incorrect,'');
1055: push(@labels,'');
1056: }
1057: @correct = @new_correct;
1058: @incorrect = @new_incorrect;
1059: } else {
1060: @labels = (1 .. scalar(@correct));
1061: }
1062: #
1063: my $xlabel = 'foil chosen';
1064: my $plot= &Apache::loncommon::DrawBarGraph($title,
1065: $xlabel,
1066: 'Percent Choosing',
1067: 100,
1068: ['#33ff00','#ff3300'],
1069: \@labels,
1070: \@correct,
1071: \@incorrect);
1072: return $plot;
1073: }
1074:
1075: sub RR_create_stacked_selection_plot {
1076: my ($foils,$foil_data,$title,$true_foils)=@_;
1077: #
1078: my @dataset; # array of array refs - multicolor rows $datasets[row]->[col]
1079: my @labels;
1080: my $count;
1081: my %column; # maps foil name to column in @datasets
1082: for (my $i=0;$i<scalar(@$foils);$i++) {
1083: my $foil = $foils->[$i];
1084: if (defined($true_foils) && scalar(keys(%$true_foils)) > 0 ) {
1085: next if (! $true_foils->{$foil} );
1086: push(@labels,$i+1);
1087: } else {
1088: next if (! exists($foil_data->{$foil}));
1089: push(@labels,$i+1);
1090: }
1091: next if (! exists($foil_data->{$foils->[$i]}));
1092: $column{$foil}= $count++;
1093: for (my $j=0;$j<scalar(@$foils);$j++) {
1094: my $value = 0;
1095: if ($i != $j ) {
1096: $value += $foil_data->{$foil}->{$foils->[$j]};
1097: }
1098: $dataset[$j]->[$column{$foil}]=$value;
1099: }
1100: }
1101: #
1102: return '' if (! scalar(keys(%column)));
1103: #
1104: my $grand_total = 0;
1105: my %count_per_foil;
1106: while (my ($foil,$bar) = each (%column)) {
1107: my $bar_total = 0;
1108: for (my $j=0;$j<scalar(@dataset);$j++) {
1109: $bar_total += $dataset[$j]->[$bar];
1110: }
1111: next if ($bar_total == 0);
1112: for (my $j=0;$j<scalar(@dataset);$j++) {
1113: $dataset[$j]->[$bar] =
1114: sprintf('%2f',$dataset[$j]->[$bar]/$bar_total * 100);
1115: }
1116: $count_per_foil{$foil}=' ( '.$bar_total.' )';
1117: $grand_total += $bar_total;
1118: }
1119: if ($grand_total == 0) {
1120: return ('',undef);
1121: }
1122: my @empty_row = ();
1123: foreach (@{$dataset[0]}) {
1124: push(@empty_row,0);
1125: }
1126: #
1127: my $graph = &Apache::loncommon::DrawBarGraph
1128: ($title,'Correct Foil','foils chosen Incorrectly',
1129: 100,$plotcolors,\@labels,\@empty_row,@dataset);
1130: return ($graph,\%count_per_foil);
1131: }
1132:
1133:
1134: #########################################################
1135: #########################################################
1136: ##
1137: ## Misc routines
1138: ##
1139: #########################################################
1140: #########################################################
1141:
1142: # if $correct is a hash ref, it is assumed to be indexed by student names.
1143: # the values are assumed to be hash refs with a key of 'answer'.
1144: sub classify_response_data {
1145: my ($full_row_data,$correct,$function) = @_;
1146: my %submission_data;
1147: my %students;
1148: my $max=0;
1149: foreach my $row (@$full_row_data) {
1150: my %subm = &hashify_attempt($row);
1151: if (ref($correct) eq 'HASH') {
1152: $subm{'correct'} = $correct->{$subm{'student'}};
1153: } else {
1154: $subm{'correct'} = $correct;
1155: }
1156: $subm{'submission'} =~ s/=\d+\s*$//;
1157: if (&$function(\%subm)) {
1158: $students{$subm{'student'}}++;
1159: $submission_data{'_count'}++;
1160: if (&submission_is_correct($subm{'award'})) {
1161: $submission_data{'_correct'}++;
1162: }
1163:
1164: if($max<++$submission_data{$subm{'correct'}}->{$subm{'submission'}}) {
1165: $max=$submission_data{$subm{'correct'}}->{$subm{'submission'}};
1166: }
1167: }
1168: }
1169: $submission_data{'_max'} = $max;
1170: $submission_data{'_students'}=scalar(keys(%students));
1171: return \%submission_data;
1172: }
1173:
1174:
1175: #########################################################
1176: #########################################################
1177: ##
1178: ## Option Response Routines
1179: ##
1180: #########################################################
1181: #########################################################
1182: sub OptionResponseAnalysis {
1183: my ($r,$problem,$problem_data,$Students) = @_;
1184: my ($resource,$respid) = ($problem->{'resource'},
1185: $problem->{'respid'});
1186: # Note: part data is not needed.
1187: my $PerformanceData = &Apache::loncoursedata::get_response_data
1188: ([&Apache::lonstatistics::get_selected_sections()],
1189: $Apache::lonstatistics::enrollment_status,
1190: $resource->symb,$respid);
1191: if (! defined($PerformanceData) ||
1192: ref($PerformanceData) ne 'ARRAY' ) {
1193: $r->print('<h2>'.
1194: &mt('There is no student data for this problem.').
1195: '</h2>');
1196: } else {
1197: $r->rflush();
1198: if ($env{'form.AnalyzeOver'} eq 'tries') {
1199: my $analysis_html = &OR_tries_analysis($r,
1200: $PerformanceData,
1201: $problem_data);
1202: $r->print($analysis_html);
1203: $r->rflush();
1204: } elsif ($env{'form.AnalyzeOver'} eq 'time') {
1205: my $analysis_html = &OR_time_analysis($PerformanceData,
1206: $problem_data);
1207: $r->print($analysis_html);
1208: $r->rflush();
1209: } else {
1210: $r->print('<h2>'.
1211: &mt('The analysis you have selected is '.
1212: 'not supported at this time').
1213: '</h2>');
1214: }
1215: }
1216: }
1217:
1218: #########################################################
1219: #
1220: # Option Response: tries Analysis
1221: #
1222: #########################################################
1223: sub OR_tries_analysis {
1224: my ($r,$PerformanceData,$ORdata) = @_;
1225: my $mintries = 1;
1226: my $maxtries = $env{'form.NumPlots'};
1227: my ($table,$Foils,$Concepts) = &build_foil_index($ORdata);
1228: if (! defined($Concepts)) {
1229: $Concepts = [];
1230: }
1231: my %response_data = &OR_analyze_by_tries($r,$PerformanceData,
1232: $mintries,$maxtries);
1233: my $analysis = '';
1234: #
1235: # Compute the data necessary to make the plots
1236: my @foil_plot;
1237: my @concept_data;
1238: for (my $j=0;$j<=scalar(@$Concepts);$j++) {
1239: my $concept = $Concepts->[$j];
1240: foreach my $foilid (@{$concept->{'foils'}}) {
1241: for (my $try=$mintries;$try<=$maxtries;$try++) {
1242: # concept analysis data
1243: $concept_data[$j]->[$try]->{'_correct'} +=
1244: $response_data{$foilid}->[$try]->{'_correct'};
1245: $concept_data[$j]->[$try]->{'_total'} +=
1246: $response_data{$foilid}->[$try]->{'_total'};
1247: #
1248: # foil analysis data
1249: if ($response_data{$foilid}->[$try]->{'_total'} == 0) {
1250: push(@{$foil_plot[$try]->{'_correct'}},0);
1251: } else {
1252: push(@{$foil_plot[$try]->{'_correct'}},
1253: 100*$response_data{$foilid}->[$try]->{'_correct'}/
1254: $response_data{$foilid}->[$try]->{'_total'});
1255: }
1256: foreach my $option (@{$ORdata->{'_Options'}}) {
1257: push(@{$foil_plot[$try]->{'_total'}},
1258: $response_data{$foilid}->[$try]->{'_total'});
1259: if ($response_data{$foilid}->[$try]->{'_total'} == 0) {
1260: push (@{$foil_plot[$try]->{$option}},0);
1261: } else {
1262: if ($response_data{$foilid}->[$try]->{'_total'} ==
1263: $response_data{$foilid}->[$try]->{'_correct'}) {
1264: push(@{$foil_plot[$try]->{$option}},0);
1265: } else {
1266: push (@{$foil_plot[$try]->{$option}},
1267: 100 *
1268: $response_data{$foilid}->[$try]->{$option} /
1269: ($response_data{$foilid}->[$try]->{'_total'}
1270: -
1271: $response_data{$foilid}->[$try]->{'_correct'}
1272: ));
1273: }
1274: }
1275: } # End of foreach my $option
1276: }
1277: } # End of foreach my $foilid
1278: } # End of concept loops
1279: #
1280: # Build a table for the plots
1281: my $analysis_html = "<br /><table>\n";
1282: my $optionkey = &build_option_index($ORdata);
1283: my $num_concepts = 1;
1284: if (defined($Concepts)) { $num_concepts = scalar(@$Concepts); }
1285: #
1286: for (my $try=$mintries;$try<=$maxtries;$try++) {
1287: if (! defined($response_data{'_total'}->[$try]) ||
1288: $response_data{'_total'}->[$try] == 0) {
1289: if ($try > 1) {
1290: $analysis_html.= '<tr><td align="center" colspan="4"><b>'.
1291: &mt('None of the selected students attempted the problem more than [_1] times.',$try-1).
1292: '</b></td></tr>';
1293: } else {
1294: $analysis_html.= '<tr><td colspan="4" align="center"><b>'.
1295: &mt('None of the selected students have attempted the problem').'</b></td></tr>';
1296: }
1297: last;
1298: }
1299: my $concept_graph='';
1300: if ($num_concepts > 1) {
1301: #
1302: # Create concept plot
1303: my @concept_plot_data;
1304: for (my $j=0;$j<=$#concept_data;$j++) {
1305: my $total = $concept_data[$j]->[$try]->{'_total'};
1306: if ($total == 0) {
1307: $concept_plot_data[$j] = 0;
1308: } else {
1309: $concept_plot_data[$j] = 100 *
1310: sprintf('%0.3f',
1311: $concept_data[$j]->[$try]->{'_correct'} /
1312: $total);
1313: }
1314: }
1315: #
1316: $concept_graph = &Apache::loncommon::DrawBarGraph
1317: ('Correct Concepts','Concept Number','Percent Correct',
1318: 100,$plotcolors,undef,\@concept_plot_data,{xskip=>1});
1319: }
1320: #
1321: # Create Foil Plots
1322: my $data_count = $response_data{'_total'}->[$try];
1323: my $correct = $response_data{'_correct'}->[$try];
1324: $correct |= 0;
1325: my @Datasets;
1326: foreach my $option ('_correct',@{$ORdata->{'_Options'}}) {
1327: next if (! exists($foil_plot[$try]->{$option}));
1328: push(@Datasets,$foil_plot[$try]->{$option});
1329: }
1330: #
1331: # Put a blank in the data set between concepts
1332: for (my $set =0;$set<=$#Datasets;$set++) {
1333: my @Data = @{$Datasets[$set]};
1334: my $idx = 0;
1335: foreach my $concept (@{$Concepts}) {
1336: foreach my $foilid (@{$concept->{'foils'}}) {
1337: $Datasets[$set]->[$idx++]=shift(@Data);
1338: }
1339: if ($concept->{'name'} ne $Concepts->[-1]->{'name'}) {
1340: $Datasets[$set]->[$idx++] = 0;
1341: }
1342: }
1343: }
1344: #
1345: # Set up the labels needed for the bar graph
1346: my @Labels;
1347: my $idx = 1;
1348: foreach my $concept (@{$Concepts}) {
1349: foreach my $foilid (@{$concept->{'foils'}}) {
1350: push(@Labels,$idx++);
1351: }
1352: push(@Labels,'');
1353: }
1354: #
1355: my $correct_graph = &Apache::loncommon::DrawBarGraph
1356: ('Correct Statements','Statement','% Answered Correct',
1357: 100,$plotcolors,\@Labels,$Datasets[0],{xskip=>1});
1358:
1359: #
1360: #
1361: next if (! defined($Datasets[0]));
1362: for (my $i=0; $i< scalar(@{$Datasets[0]});$i++) {
1363: $Datasets[0]->[$i]=0;
1364: }
1365: my $count = $response_data{'_total'}->[$try] -
1366: $response_data{'_correct'}->[$try];
1367: my $incorrect_graph = &Apache::loncommon::DrawBarGraph
1368: ('Incorrect Statements','Statement','% Chosen Incorrectly',
1369: 100,$plotcolors,\@Labels,@Datasets,{xskip=>1});
1370: $analysis_html.=
1371: '<tr><td colspan="4" align="center">'.
1372: '<font size="+1">'.
1373: &mt('Attempt [_1], [_2] submissions, [_3] correct, [_4] incorrect',
1374: $try,$data_count,$correct,$data_count-$correct).
1375: '</font>'.'</td></tr>'.$/.
1376: '<tr>'.
1377: '<td>'.$concept_graph.'</td>'.
1378: '<td>'.$correct_graph.'</td>'.
1379: '<td>'.$incorrect_graph.'</td>'.
1380: '<td>'.$optionkey.'<td>'.
1381: '</tr>'.$/;
1382: }
1383: $analysis_html .= "</table>\n";
1384: $table .= $analysis_html;
1385: return $table;
1386: }
1387:
1388: sub OR_analyze_by_tries {
1389: my ($r,$PerformanceData,$mintries,$maxtries) = @_;
1390: my %Trydata;
1391: $mintries = 1 if (! defined($mintries) || $mintries < 1);
1392: $maxtries = $mintries if (! defined($maxtries) || $maxtries < $mintries);
1393: my @students;
1394: foreach my $row (@$PerformanceData) {
1395: next if (! defined($row));
1396: my $tries = &get_tries_from_row($row);
1397: my %Row = &Process_OR_Row($row);
1398: next if (! %Row);
1399: my $student_id = $row->[&Apache::loncoursedata::RD_student_id()];
1400: $students[$tries]->{$student_id}++;
1401: while (my ($foilid,$href) = each(%Row)) {
1402: if (! ref($href)) {
1403: $Trydata{$foilid}->[$tries] += $href;
1404: next;
1405: }
1406: while (my ($option,$value) = each(%$href)) {
1407: $Trydata{$foilid}->[$tries]->{$option}+=$value;
1408: }
1409: }
1410: }
1411: for (my $try=$mintries;$try<=$maxtries;$try++) {
1412: $Trydata{'_studentcount'}->[$try] = scalar(keys(%{$students[$try]}));
1413: }
1414: return %Trydata;
1415: }
1416:
1417: #########################################################
1418: #
1419: # Option Response: Time Analysis
1420: #
1421: #########################################################
1422: sub OR_time_analysis {
1423: my ($performance_data,$ORdata) = @_;
1424: my ($table,$Foils,$Concepts) = &build_foil_index($ORdata);
1425: my $foilkey = &build_option_index($ORdata);
1426: my $num_concepts = 1;
1427: if (defined($Concepts)) { $num_concepts = scalar(@$Concepts); }
1428: #
1429: if ($num_concepts < 2) {
1430: $table = '<h3>'.
1431: &mt('Not enough data for concept analysis. '.
1432: 'Performing Foil Analysis').
1433: '</h3>'.$table;
1434: }
1435: #
1436: my $num_plots = $env{'form.NumPlots'};
1437: my $num_data = scalar(@$performance_data)-1;
1438: #
1439: my $current_index;
1440: $table .= "<table>\n";
1441: for (my $i=0;$i<$num_plots;$i++) {
1442: ##
1443: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
1444: ('startdate_'.$i);
1445: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
1446: ('enddate_'.$i);
1447: if (! defined($starttime) || ! defined($endtime)) {
1448: my $sec_in_day = 86400;
1449: my $last_sub_time = &get_time_from_row($performance_data->[-1]);
1450: my ($sday,$smon,$syear) =
1451: (localtime($last_sub_time - $sec_in_day*$i))[3..5];
1452: $starttime = &Time::Local::timelocal(0,0,0,$sday,$smon,$syear);
1453: $endtime = $starttime + $sec_in_day;
1454: if ($i == ($num_plots -1 )) {
1455: $starttime = &get_time_from_row($performance_data->[0]);
1456: }
1457: }
1458: $table .= '<tr><td colspan="4" align="center"><font size="+1">'.
1459: &mt('Data from [_1] to [_2]',
1460: &Apache::lonlocal::locallocaltime($starttime),
1461: &Apache::lonlocal::locallocaltime($endtime)).
1462: '</font></td></tr>'.$/;
1463: my $startdateform = &Apache::lonhtmlcommon::date_setter
1464: ('Statistics','startdate_'.$i,$starttime);
1465: my $enddateform = &Apache::lonhtmlcommon::date_setter
1466: ('Statistics','enddate_'.$i,$endtime);
1467: #
1468: my $begin_index;
1469: my $end_index;
1470: my $j;
1471: while (++$j < scalar(@$performance_data)) {
1472: last if (&get_time_from_row($performance_data->[$j])
1473: > $starttime);
1474: }
1475: $begin_index = $j;
1476: while ($j < scalar(@$performance_data)) {
1477: if (&get_time_from_row($performance_data->[$j]) > $endtime) {
1478: last;
1479: } else {
1480: $j++;
1481: }
1482: }
1483: $end_index = $j;
1484: ##
1485: my ($processed_time_data,$correct,$data_count,$student_count) =
1486: &OR_time_process_data($performance_data,$begin_index,$end_index);
1487: $correct |= 0;
1488: ##
1489: $table .= '<tr><td colspan="4" align="center"><font size="+1">'.
1490: &mt('[_1] submissions from [_2] students, [_3] correct, [_4] incorrect',
1491: $data_count,$student_count,$correct,$data_count-$correct).
1492: '</font></td></tr>'.$/;
1493: my $concept_correct_plot = '';
1494: if ($num_concepts > 1) {
1495: $concept_correct_plot =
1496: &OR_Concept_Time_Analysis($processed_time_data,
1497: $correct,$data_count,$student_count,
1498: $ORdata,$Concepts);
1499: }
1500: my ($foil_correct_plot,$foil_incorrect_plot) =
1501: &OR_Foil_Time_Analysis($processed_time_data,
1502: $correct,$data_count,$student_count,
1503: $ORdata,$Foils,$Concepts);
1504: $table .= '<tr>'.
1505: '<td>'.$concept_correct_plot.'</td>'.
1506: '<td>'.$foil_correct_plot.'</td>'.
1507: '<td>'.$foil_incorrect_plot.'</td>'.
1508: '<td align="left" valign="top">'.$foilkey.'</td></tr>'.$/;
1509: $table .= '<tr><td colspan="4" align="center">'.
1510: &mt('Start time: [_1]',$startdateform).'<br />'.
1511: &mt('End time: [_1]',$enddateform).'</td></tr>'.$/;
1512: $table.= '<tr><td colspan="4"> </td></tr>'.$/;
1513: }
1514: $table .= '</table>';
1515: #
1516: return $table;
1517: }
1518:
1519: sub OR_Foil_Time_Analysis {
1520: my ($processed_time_data,$correct,$data_count,$student_count,
1521: $ORdata,$Foils,$Concepts) = @_;
1522: if ($data_count <= 0) {
1523: return ('<h2>'.&mt('There is no data to plot').'</h2>','');
1524: }
1525: my $analysis_html;
1526: my @plotdata;
1527: my @labels;
1528: foreach my $concept (@{$Concepts}) {
1529: foreach my $foil (@{$concept->{'foils'}}) {
1530: push(@labels,scalar(@labels)+1);
1531: my $total = $processed_time_data->{$foil}->{'_total'};
1532: if ($total == 0) {
1533: push(@{$plotdata[0]},0);
1534: } else {
1535: push(@{$plotdata[0]},
1536: 100 * $processed_time_data->{$foil}->{'_correct'} / $total);
1537: }
1538: my $total_incorrect = $total - $processed_time_data->{$foil}->{'_correct'};
1539: for (my $i=0;$i<scalar(@{$ORdata->{'_Options'}});$i++) {
1540: my $option = $ORdata->{'_Options'}->[$i];
1541: if ($total_incorrect == 0) {
1542: push(@{$plotdata[$i+1]},0);
1543: } else {
1544: push(@{$plotdata[$i+1]},
1545: 100 * $processed_time_data->{$foil}->{$option} / $total_incorrect);
1546: }
1547: }
1548: }
1549: # Put in a blank one
1550: push(@labels,'');
1551: push(@{$plotdata[0]},0);
1552: for (my $i=0;$i<scalar(@{$ORdata->{'_Options'}});$i++) {
1553: push(@{$plotdata[$i+1]},0);
1554: }
1555: }
1556: #
1557: # Create the plot
1558: my $correct_plot = &Apache::loncommon::DrawBarGraph('Correct Statements',
1559: 'Statement Number',
1560: 'Percent Correct',
1561: 100,
1562: $plotcolors,
1563: undef,
1564: $plotdata[0],
1565: {xskip=>1});
1566: for (my $j=0; $j< scalar(@{$plotdata[0]});$j++) {
1567: $plotdata[0]->[$j]=0;
1568: }
1569: my $incorrect_plot =
1570: &Apache::loncommon::DrawBarGraph('Incorrect Statements',
1571: 'Statement Number',
1572: 'Incorrect Option Choice',
1573: 100,
1574: $plotcolors,
1575: undef,
1576: @plotdata,{xskip=>1});
1577: return ($correct_plot,$incorrect_plot);
1578: }
1579:
1580: sub OR_Concept_Time_Analysis {
1581: my ($processed_time_data,$correct,$data_count,$student_count,
1582: $ORdata,$Concepts) = @_;
1583: return '' if ($data_count == 0);
1584: #
1585: # Put the data in plottable form
1586: my @plotdata;
1587: foreach my $concept (@$Concepts) {
1588: my ($total,$correct);
1589: foreach my $foil (@{$concept->{'foils'}}) {
1590: $total += $processed_time_data->{$foil}->{'_total'};
1591: $correct += $processed_time_data->{$foil}->{'_correct'};
1592: }
1593: if ($total == 0) {
1594: push(@plotdata,0);
1595: } else {
1596: push(@plotdata,100 * $correct / $total);
1597: }
1598: }
1599: #
1600: # Create the plot
1601: return &Apache::loncommon::DrawBarGraph('Correct Concepts',
1602: 'Concept Number',
1603: 'Percent Correct',
1604: 100,
1605: $plotcolors,
1606: undef,
1607: \@plotdata,{xskip=>1});
1608: }
1609:
1610: sub OR_time_process_data {
1611: my ($performance_data,$begin_index,$end_index)=@_;
1612: my %processed_time_data;
1613: my %distinct_students;
1614: my ($correct,$data_count);
1615: if (($begin_index == $end_index) &&
1616: ($end_index != scalar(@$performance_data)-1)) {
1617: return undef;
1618: }
1619: # Be sure we include the last one if we are asked for it.
1620: # That we have to correct here (and not when $end_index is
1621: # given a value) should probably be considered a bug.
1622: if ($end_index == scalar(@$performance_data)-1) {
1623: $end_index++;
1624: }
1625: my $count;
1626: for (my $i=$begin_index;$i<$end_index;$i++) {
1627: my $attempt = $performance_data->[$i];
1628: $count++;
1629: next if (! defined($attempt));
1630: my %attempt = &Process_OR_Row($attempt);
1631: $data_count++;
1632: $correct += $attempt{'_correct'};
1633: $distinct_students{$attempt->[&Apache::loncoursedata::RD_student_id()]}++;
1634: while (my ($foilid,$href) = each(%attempt)) {
1635: if (! ref($href)) {
1636: $processed_time_data{$foilid} += $href;
1637: next;
1638: }
1639: while (my ($option,$value) = each(%$href)) {
1640: $processed_time_data{$foilid}->{$option}+=$value;
1641: }
1642: }
1643: }
1644: return (\%processed_time_data,$correct,$data_count,
1645: scalar(keys(%distinct_students)));
1646: }
1647:
1648: sub build_foil_index {
1649: my ($ORdata) = @_;
1650: return if (! exists($ORdata->{'_Foils'}));
1651: my %Foildata = %{$ORdata->{'_Foils'}};
1652: my @Foils = sort(keys(%Foildata));
1653: my %Concepts;
1654: foreach my $foilid (@Foils) {
1655: push(@{$Concepts{$Foildata{$foilid}->{'_Concept'}}},
1656: $foilid);
1657: }
1658: undef(@Foils);
1659: # Having gathered the concept information in a hash, we now translate it
1660: # into an array because we need to be consistent about order.
1661: # Also put the foils in order, too.
1662: my $sortfunction = sub {
1663: my %Numbers = (one => 1,
1664: two => 2,
1665: three => 3,
1666: four => 4,
1667: five => 5,
1668: six => 6,
1669: seven => 7,
1670: eight => 8,
1671: nine => 9,
1672: ten => 10,);
1673: my $a1 = lc($a);
1674: my $b1 = lc($b);
1675: if (exists($Numbers{$a1})) {
1676: $a1 = $Numbers{$a1};
1677: }
1678: if (exists($Numbers{$b1})) {
1679: $b1 = $Numbers{$b1};
1680: }
1681: if (($a1 =~/^\d+$/) && ($b1 =~/^\d+$/)) {
1682: return $a1 <=> $b1;
1683: } else {
1684: return $a1 cmp $b1;
1685: }
1686: };
1687: my @Concepts;
1688: foreach my $concept (sort $sortfunction (keys(%Concepts))) {
1689: if (! defined($Concepts{$concept})) {
1690: $Concepts{$concept}=[];
1691: # next;
1692: }
1693: push(@Concepts,{ name => $concept,
1694: foils => [@{$Concepts{$concept}}]});
1695: push(@Foils,(@{$Concepts{$concept}}));
1696: }
1697: #
1698: # Build up the table of row labels.
1699: my $table = '<table border="1" >'."\n";
1700: if (@Concepts > 1) {
1701: $table .= '<tr>'.
1702: '<th>'.&mt('Concept Number').'</th>'.
1703: '<th>'.&mt('Concept').'</th>'.
1704: '<th>'.&mt('Foil Number').'</th>'.
1705: '<th>'.&mt('Foil Name').'</th>'.
1706: '<th>'.&mt('Foil Text').'</th>'.
1707: '<th>'.&mt('Correct Value').'</th>'.
1708: "</tr>\n";
1709: } else {
1710: $table .= '<tr>'.
1711: '<th>'.&mt('Foil Number').'</th>'.
1712: '<th>'.&mt('Foil Name').'</th>'.
1713: '<th>'.&mt('Foil Text').'</th>'.
1714: '<th>'.&mt('Correct Value').'</th>'.
1715: "</tr>\n";
1716: }
1717: my $conceptindex = 1;
1718: my $foilindex = 1;
1719: foreach my $concept (@Concepts) {
1720: my @FoilsInConcept = @{$concept->{'foils'}};
1721: my $firstfoil = shift(@FoilsInConcept);
1722: if (@Concepts > 1) {
1723: $table .= '<tr>'.
1724: '<td>'.$conceptindex.'</td>'.
1725: '<td>'.&HTML::Entities::encode($concept->{'name'},'<>&"').'</td>'.
1726: '<td>'.$foilindex++.'</td>'.
1727: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'name'},'<>&"').'</td>'.
1728: '<td>'.$Foildata{$firstfoil}->{'text'}.'</td>'.
1729: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'value'},'<>&"').'</td>'.
1730: "</tr>\n";
1731: } else {
1732: $table .= '<tr>'.
1733: '<td>'.$foilindex++.'</td>'.
1734: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'name'},'<>&"').'</td>'.
1735: '<td>'.$Foildata{$firstfoil}->{'text'}.'</td>'.
1736: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'value'},'<>&"').'</td>'.
1737: "</tr>\n";
1738: }
1739: foreach my $foilid (@FoilsInConcept) {
1740: if (@Concepts > 1) {
1741: $table .= '<tr>'.
1742: '<td></td>'.
1743: '<td></td>'.
1744: '<td>'.$foilindex.'</td>'.
1745: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'name'},'<>&"').'</td>'.
1746: '<td>'.$Foildata{$foilid}->{'text'}.'</td>'.
1747: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'value'},'<>&"').'</td>'.
1748: "</tr>\n";
1749: } else {
1750: $table .= '<tr>'.
1751: '<td>'.$foilindex.'</td>'.
1752: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'name'},'<>&"').'</td>'.
1753: '<td>'.$Foildata{$foilid}->{'text'}.'</td>'.
1754: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'value'},'<>&"').'</td>'.
1755: "</tr>\n";
1756: }
1757: } continue {
1758: $foilindex++;
1759: }
1760: } continue {
1761: $conceptindex++;
1762: }
1763: $table .= "</table>\n";
1764: #
1765: # Build option index with color stuff
1766: return ($table,\@Foils,\@Concepts);
1767: }
1768:
1769: sub build_option_index {
1770: my ($ORdata)= @_;
1771: my $table = "<table>\n";
1772: my $optionindex = 0;
1773: my @Rows;
1774: foreach my $option (&mt('correct option chosen'),@{$ORdata->{'_Options'}}) {
1775: my $color = $plotcolors->[$optionindex++];
1776: push (@Rows,
1777: '<tr>'.
1778: '<td bgcolor="'.$color.'">'.
1779: '<font color="'.$color.'">'.('*'x3).'</font>'.'</td>'.
1780: '<td>'.&HTML::Entities::encode($option,'<>&"').'</td>'.
1781: "</tr>\n");
1782: }
1783: shift(@Rows); # Throw away 'correct option chosen' color
1784: $table .= join('',reverse(@Rows));
1785: $table .= "</table>\n";
1786: }
1787:
1788: sub build_foil_key {
1789: my ($foils,$extra_data)= @_;
1790: if (! defined($extra_data)) { $extra_data = {}; }
1791: my $table = "<table>\n";
1792: my $foil_index = 0;
1793: my @rows;
1794: foreach my $foil (&mt('correct foil chosen'),@{$foils}) {
1795: my $color = $plotcolors->[$foil_index++];
1796: push (@rows,
1797: '<tr>'.
1798: '<td bgcolor="'.$color.'" class="key">'.
1799: '<font color="'.$color.'">'.('*'x4).'</font></td>'.
1800: '<td>'.&HTML::Entities::encode($foil,'<>&"').
1801: (' 'x2).$extra_data->{$foil}.'</td>'.
1802: "</tr>\n");
1803: }
1804: shift(@rows); # Throw away 'correct foil chosen' color
1805: $table .= join('',reverse(@rows));
1806: $table .= "</table>\n";
1807: }
1808:
1809: #########################################################
1810: #########################################################
1811: ##
1812: ## Generic Interface Routines
1813: ##
1814: #########################################################
1815: #########################################################
1816: sub CreateInterface {
1817: ##
1818: ## Environment variable initialization
1819: if (! exists($env{'form.AnalyzeOver'})) {
1820: $env{'form.AnalyzeOver'} = 'tries';
1821: }
1822: ##
1823: ## Build the menu
1824: my $Str = '';
1825: $Str .= &Apache::lonhtmlcommon::breadcrumbs
1826: (undef,'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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