1: # The LearningOnline Network with CAPA
2: #
3: # $Id: lonproblemanalysis.pm,v 1.122 2005/11/07 22:09:00 albertel Exp $
4: #
5: # Copyright Michigan State University Board of Trustees
6: #
7: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
8: #
9: # LON-CAPA is free software; you can redistribute it and/or modify
10: # it under the terms of the GNU General Public License as published by
11: # the Free Software Foundation; either version 2 of the License, or
12: # (at your option) any later version.
13: #
14: # LON-CAPA is distributed in the hope that it will be useful,
15: # but WITHOUT ANY WARRANTY; without even the implied warranty of
16: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17: # GNU General Public License for more details.
18: #
19: # You should have received a copy of the GNU General Public License
20: # along with LON-CAPA; if not, write to the Free Software
21: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22: #
23: # /home/httpd/html/adm/gpl.txt
24: #
25: # http://www.lon-capa.org/
26: #
27: package Apache::lonproblemanalysis;
28:
29: use strict;
30: use Apache::lonnet;
31: use Apache::loncommon();
32: use Apache::lonhtmlcommon();
33: use Apache::loncoursedata();
34: use Apache::lonstatistics;
35: use Apache::lonlocal;
36: use Apache::lonstathelpers();
37: use Apache::lonstudentsubmissions();
38: use HTML::Entities();
39: use Time::Local();
40: use capa;
41:
42: my $plotcolors = ['#33ff00',
43: '#0033cc', '#990000', '#aaaa66', '#663399', '#ff9933',
44: '#66ccff', '#ff9999', '#cccc33', '#660000', '#33cc66',
45: ];
46:
47: my @SubmitButtons = ({ name => 'PrevProblemAnalysis',
48: text => 'Previous Problem' },
49: { name => 'ProblemAnalysis',
50: text => 'Analyze Problem Again' },
51: { name => 'NextProblemAnalysis',
52: text => 'Next Problem' },
53: { name => 'break'},
54: { name => 'SelectAnother',
55: text => 'Choose a different Problem' });
56:
57: sub BuildProblemAnalysisPage {
58: my ($r,$c)=@_;
59: #
60: my %Saveable_Parameters = ('Status' => 'scalar',
61: 'Section' => 'array',
62: 'NumPlots' => 'scalar',
63: 'AnalyzeOver' => 'scalar',
64: );
65: &Apache::loncommon::store_course_settings('problem_analysis',
66: \%Saveable_Parameters);
67: &Apache::loncommon::restore_course_settings('problem_analysis',
68: \%Saveable_Parameters);
69: #
70: &Apache::lonstatistics::PrepareClasslist();
71: #
72: $r->print(&CreateInterface());
73: #
74: my @Students = @Apache::lonstatistics::Students;
75: #
76: if (@Students < 1 && exists($env{'form.firstrun'})) {
77: $r->print('<h2>There are no students in the sections selected</h2>');
78: }
79: #
80: my @CacheButtonHTML =
81: &Apache::lonstathelpers::manage_caches($r,'Statistics','stats_status');
82: $r->rflush();
83: #
84: my $problem_types = '(option|radiobutton|numerical)';
85: if (exists($env{'form.problemchoice'}) &&
86: ! exists($env{'form.SelectAnother'})) {
87: foreach my $button (@SubmitButtons) {
88: if ($button->{'name'} eq 'break') {
89: $r->print("<br />\n");
90: } else {
91: $r->print('<input type="submit" name="'.$button->{'name'}.'" '.
92: 'value="'.&mt($button->{'text'}).'" />');
93: $r->print(' 'x5);
94: }
95: }
96: foreach my $html (@CacheButtonHTML) {
97: $r->print($html.(' 'x5));
98: }
99: #
100: $r->print(&Apache::lonstathelpers::submission_report_form
101: ('problem_analysis'));
102: #
103: $r->print('<hr />');
104: $r->rflush();
105: #
106: # Determine which problem we are to analyze
107: my $current_problem = &Apache::lonstathelpers::get_target_from_id
108: ($env{'form.problemchoice'});
109: #
110: my ($navmap,$prev,$curr,$next) =
111: &Apache::lonstathelpers::get_prev_curr_next($current_problem,
112: $problem_types,
113: 'response',
114: );
115: if (exists($env{'form.PrevProblemAnalysis'}) && defined($prev)) {
116: $current_problem = $prev;
117: } elsif (exists($env{'form.NextProblemAnalysis'}) && defined($next)) {
118: $current_problem = $next;
119: } else {
120: $current_problem = $curr;
121: }
122: #
123: # Store the current problem choice and send it out in the form
124: $env{'form.problemchoice'} =
125: &Apache::lonstathelpers::make_target_id($current_problem);
126: $r->print('<input type="hidden" name="problemchoice" value="'.
127: $env{'form.problemchoice'}.'" />');
128: #
129: if (! defined($current_problem->{'resource'})) {
130: $r->print('resource is undefined');
131: } else {
132: my $resource = $current_problem->{'resource'};
133: $r->print('<h1>'.$resource->compTitle.'</h1>');
134: $r->print('<h3>'.$resource->src.'</h3>');
135: $r->print('<h4>'.&Apache::lonstatistics::section_and_enrollment_description().'</h4>');
136: if ($env{'form.show_prob'} eq 'true') {
137: $r->print(&Apache::lonstathelpers::render_resource($resource));
138: }
139: $r->rflush();
140: my %Data = &Apache::lonstathelpers::get_problem_data
141: ($resource->src);
142: my $problem_data = $Data{$current_problem->{'part'}.
143: '.'.
144: $current_problem->{'respid'}};
145: if ($current_problem->{'resptype'} eq 'option') {
146: &OptionResponseAnalysis($r,$current_problem,
147: $problem_data,
148: \@Students);
149: } elsif ($current_problem->{'resptype'} eq 'radiobutton') {
150: &radio_response_analysis($r,$current_problem,
151: $problem_data,
152: \@Students);
153: } elsif ($current_problem->{'resptype'} eq 'numerical') {
154: &numerical_response_analysis($r,$current_problem,
155: $problem_data,\@Students);
156: } else {
157: $r->print('<h2>Analysis of '.$current_problem->{'resptype'}.' is not supported</h2>');
158: }
159: }
160: $r->print('<hr />');
161: } else {
162: my $submit_button = '<input type="submit" '.
163: 'name="ProblemAnalysis" value="'.
164: &mt('Analyze Problem').'" />';
165: $r->print($submit_button);
166: $r->print(' 'x5);
167: $r->print('<h3>'.&mt('Please select a problem to analyze').'</h3>');
168: $r->print(&Apache::lonstathelpers::problem_selector($problem_types,
169: $submit_button));
170: }
171: }
172:
173: #########################################################
174: #########################################################
175: ##
176: ## Numerical Response Routines
177: ##
178: #########################################################
179: #########################################################
180: sub numerical_response_analysis {
181: my ($r,$problem,$problem_analysis,$students) = @_;
182: my $c = $r->connection();
183: #
184: if ($env{'form.AnalyzeOver'} !~ /^(tries|time)$/) {
185: $r->print('Bad request');
186: }
187: #
188: my ($resource,$partid,$respid) = ($problem->{'resource'},
189: $problem->{'part'},
190: $problem->{'respid'});
191: # Gather student data
192: my $response_data = &Apache::loncoursedata::get_response_data
193: ([&Apache::lonstatistics::get_selected_sections()],
194: $Apache::lonstatistics::enrollment_status,
195: $resource->symb,$respid);
196: #
197: $problem_analysis->{'answercomputed'} = 1;
198: if ($problem_analysis->{'answercomputed'}) {
199: my $answers =
200: &Apache::lonstathelpers::GetStudentAnswers($r,$problem,$students,
201: 'Statistics',
202: 'stats_status');
203: $r->print(&numerical_one_dimensional_plot($r,600,150,$answers));
204: }
205: #
206: if (ref($response_data) ne 'ARRAY') {
207: $r->print('<h2>'.
208: &mt('There is no submission data for this resource').
209: '</h2>');
210: return;
211: }
212: my $analysis_html = '<table>';
213: for (my $plot_num = 1;$plot_num<=$env{'form.NumPlots'};$plot_num++) {
214: my $restriction_function;
215: my $header_message;
216: my $stats_message;
217: my $post_message; # passed through &mt sooner rather than later
218: my $no_data_message;
219: my @extra_data;
220: if ($env{'form.AnalyzeOver'} eq 'tries') {
221: $restriction_function = sub {($_[0]->{'tries'} == $plot_num?1:0)};
222: $header_message = 'Attempt [_1]';
223: $stats_message =
224: '[_1] submissions, [_2] correct, [_3] incorrect';
225: $post_message = '';
226: $no_data_message = 'No data exists for attempt [_1]';
227: } else {
228: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
229: ('startdate_'.$plot_num);
230: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
231: ('enddate_'.$plot_num);
232: ($starttime,$endtime) = &ensure_start_end_times
233: ($starttime,$endtime,
234: &get_time_from_row($response_data->[0]),
235: &get_time_from_row($response_data->[-1]),
236: $plot_num);
237: $header_message = 'Data from [_2] to [_3]';
238: $extra_data[0] = &Apache::lonlocal::locallocaltime($starttime);
239: $extra_data[1] = &Apache::lonlocal::locallocaltime($endtime);
240: #
241: $stats_message =
242: '[_1] submissions from [_4] students, [_2] correct, [_3] incorrect';
243: #
244: $post_message =
245: &mt('Start time: [_1]',
246: &Apache::lonhtmlcommon::date_setter
247: ('Statistics','startdate_'.$plot_num,$starttime)).
248: '<br />'.
249: &mt('End time: [_1]',
250: &Apache::lonhtmlcommon::date_setter
251: ('Statistics','enddate_'.$plot_num,$endtime));
252: $restriction_function =
253: sub {
254: my $t = $_[0]->{'timestamp'};
255: if ($t >= $starttime && $t < $endtime) {
256: return 1;
257: } else {
258: return 0;
259: }
260: };
261: $no_data_message = 'No data for [_2] to [_3]';
262: }
263: #
264: my ($correct,$answers) =
265: &numerical_determine_answers($r,$resource,$partid,
266: $respid,$students);
267: if ($c->aborted()) { return; };
268: #
269: my ($responses,$stats) =
270: &numerical_classify_responses($response_data,$correct,
271: $restriction_function);
272: if ($stats->{'submission_count'} == 0) {
273: $analysis_html.=
274: '<tr><td colspan="2"><font size="+1"><b>'.
275: &mt($no_data_message,$plot_num,@extra_data).
276: '</b></font></td></tr>';
277: } else {
278: $analysis_html.=
279: '<tr><td colspan="2" align="center"><font size="+1"><b>'.
280: &mt($header_message,$plot_num,@extra_data).
281: '</b></font></td></tr>'.
282: '<tr><td colspan="2" align="center">'.
283: &mt($stats_message,
284: $stats->{'submission_count'},
285: $stats->{'correct_count'},
286: $stats->{'incorrect_count'},
287: $stats->{'students'},
288: @extra_data).
289: '</td></tr>'.
290: '<tr>'.'<td valign="top" align="center">'.
291: &numerical_plot_percent($r,$responses,$stats).'</td>'.
292: '<td align="center" valign="top">'.
293: &numerical_plot_differences($r,$responses,$stats).'</td>'.
294: '</tr>';
295: }
296: if ($post_message ne '') {
297: $analysis_html .=
298: '<tr><td colspan="2">'.$post_message.'</td></tr>';
299: }
300: }
301: $analysis_html.='</table>';
302: $r->print($analysis_html);
303: #
304: return;
305: }
306:
307: sub numerical_plot_percent {
308: my ($r,$responses,$stats) = @_;
309: #
310: my $total = $stats->{'submission_count'};
311: return '' if ($total == 0);
312: my $max_bins = 50;
313: my $lowest_percent = $stats->{'min_percent'};
314: my $highest_percent = $stats->{'max_percent'};
315: my $percent_spread = $highest_percent - $lowest_percent;
316: foreach (qw/20 30 40 50 100 200/) {
317: if ($percent_spread < $_) {
318: $highest_percent =$_/2;
319: last;
320: }
321: }
322: my $bin_size = 1;
323: foreach (qw/0.01 0.05 0.1 0.5 1 2 5 10 20 25 50 100/) {
324: if ($lowest_percent/2 < $_){
325: $bin_size = $_;
326: last;
327: }
328: }
329: my @bins;
330: for (my $bin = -$highest_percent;$bin<0;$bin+=$bin_size) {
331: push (@bins,$bin);
332: }
333: for (my $bin = 0; $bin<$highest_percent;$bin+=$bin_size) {
334: push (@bins,$bin);
335: }
336: push(@bins,$highest_percent);
337: #
338: my @correct;
339: my @incorrect;
340: my @count;
341: while (my ($ans,$submissions) = each(%$responses)) {
342: while (my ($submission,$counts) = each(%$submissions)) {
343: my ($correct_count,$incorrect_count) = @$counts;
344: my $scaled_value =
345: ($ans) ? 100*($submission-$ans)/abs($ans)
346: : 0;
347: if ($scaled_value < $bins[0]) {
348: $bins[0]=$scaled_value -1;
349: }
350: my $bin;
351: for ($bin=0;$bin<$#bins;$bin++) {
352: last if ($bins[$bin]>$scaled_value);
353: }
354: $correct[$bin-1]+=$correct_count;
355: $incorrect[$bin-1]+=$incorrect_count;
356: $count[$bin-1]+=$correct_count+$incorrect_count;
357: }
358: }
359: #
360: my @plot_correct = @correct;
361: my @plot_incorrect = @incorrect;
362: my $max;
363: for (my $i=0;$i<$#bins;$i++) {
364: $plot_correct[$i] *= 100/$total;
365: $plot_incorrect[$i] *= 100/$total;
366: if (! defined($max) ||
367: $max < $plot_correct[$i]+$plot_incorrect[$i] ) {
368: $max = $plot_correct[$i]+$plot_incorrect[$i];
369: }
370: }
371: foreach (qw/1 5 10 15 20 25 30 40 50 75 100/) {
372: if ($max <$_) { $max = $_; last; }
373: }
374: #
375: my $title = &mt('Percent Difference');
376: my @labels = (1..scalar(@bins)-1);
377: my $graph = &Apache::loncommon::DrawBarGraph
378: ($title,'Percent Difference from Correct','Percent of Answers',
379: $max,['#33FF00','#FF3300'],\@labels,\@plot_correct,\@plot_incorrect,
380: {xskip=>1});
381: #
382: my $table = $graph.$/.
383: &numerical_bin_table(\@bins,\@labels,\@incorrect,\@correct,\@count).$/;
384: return $table;
385: }
386:
387: sub numerical_plot_differences {
388: my ($r,$responses,$stats) = @_;
389: #
390: my $total = $stats->{'submission_count'};
391: return '' if ($total == 0);
392: my $max_bins = 21;
393: my $min_bin_size = $stats->{'min_abs'};
394: my $low_bin = $stats->{'lowest_ans'}-$stats->{'max_bin_size'};
395: my $high_bin = $stats->{'highest_ans'}+$stats->{'max_bin_size'};
396: if ($high_bin > 0 && $low_bin > -$high_bin) {
397: $low_bin = -$high_bin;
398: } elsif ($low_bin < 0 && $high_bin < -$low_bin) {
399: $high_bin = -$low_bin;
400: }
401: if (($high_bin -$low_bin)/$min_bin_size * 2 > $max_bins) {
402: $min_bin_size = abs($high_bin - $low_bin) / $max_bins * 2;
403: }
404: my @bins;
405: for (my $num = $low_bin;$num <= $high_bin;$num+=($min_bin_size/2)) {
406: push(@bins,$num);
407: }
408: #
409: my @correct;
410: my @incorrect;
411: my @count;
412: while (my ($ans,$submissions) = each(%$responses)) {
413: while (my ($submission,$counts) = each(%$submissions)) {
414: my ($correct_count,$incorrect_count) = @$counts;
415: my $scaled_value = $submission-$ans;
416: if ($scaled_value < $bins[0]) {
417: $bins[0]=$scaled_value-1;
418: }
419: my $bin=0;
420: for ($bin=0;$bin<$#bins;$bin++) {
421: last if ($bins[$bin]>$scaled_value);
422: }
423: $correct[$bin-1]+=$correct_count;
424: $incorrect[$bin-1]+=$incorrect_count;
425: $count[$bin-1]+=$correct_count+$incorrect_count;
426: }
427: }
428: my @plot_correct = @correct;
429: my @plot_incorrect = @incorrect;
430: my $max;
431: for (my $i=0;$i<=$#bins;$i++) {
432: $plot_correct[$i] *= 100/$total;
433: $plot_incorrect[$i] *= 100/$total;
434: if (! defined($max) ||
435: $max < $plot_correct[$i]+$plot_incorrect[$i] ) {
436: $max = $plot_correct[$i]+$plot_incorrect[$i];
437: }
438: }
439: foreach (qw/1 5 10 15 20 25 30 40 50 75 100/) {
440: if ($max <$_) { $max = $_; last; }
441: }
442: #
443: my $title = &mt('Difference between submission and correct');
444: my @labels = (1..scalar(@bins)-1);
445: my $graph = &Apache::loncommon::DrawBarGraph
446: ($title,'Difference from Correct','Percent of Answers',
447: $max,['#33FF00','#FF3300'],\@labels,\@plot_correct,\@plot_incorrect,
448: {xskip=>1});
449: #
450: my $table = $graph.$/.
451: &numerical_bin_table(\@bins,\@labels,\@incorrect,\@correct,\@count).$/;
452: return $table;
453: }
454:
455: sub numerical_classify_responses {
456: my ($full_row_data,$correct,$function) = @_;
457: my %submission_data;
458: my %students;
459: my %stats;
460: my $max=0;
461: foreach my $row (@$full_row_data) {
462: my %subm = &hashify_attempt($row);
463: if (ref($correct) eq 'HASH') {
464: my $s_correct = $correct->{$subm{'student'}};
465: $subm{'correct'} = $s_correct->{'answer'};
466: foreach my $item ('unit','ans_low','ans_high') {
467: $subm{$item} = $s_correct->{$item};
468: }
469: } else { # This probably never happens....
470: $subm{'correct'} = $correct->{'answer'};
471: $subm{'unit'} = $correct->{'unit'};
472: }
473: #
474: my $abs_low =abs($subm{'correct'}-$subm{'ans_low'});
475: my $abs_high=abs($subm{'correct'}-$subm{'ans_high'});
476: if (! defined($stats{'min_abs'}) ||
477: $stats{'min_abs'} > $abs_low) {
478: $stats{'min_abs'} = $abs_low;
479: }
480: if ($stats{'min_abs'} > $abs_high) {
481: $stats{'min_abs'} = $abs_high;
482: }
483: if (! defined($stats{'max_abs'}) ||
484: $stats{'max_abs'} < $abs_low) {
485: $stats{'max_abs'} = $abs_low;
486: }
487: if ($stats{'max_abs'} < $abs_high) {
488: $stats{'max_abs'} = $abs_high;
489: }
490: my $low_percent;
491: my $high_percent;
492: if (defined($subm{'correct'}) && $subm{'correct'} != 0) {
493: $low_percent = 100 * abs($abs_low / $subm{'correct'});
494: $high_percent = 100 * abs($abs_high / $subm{'correct'});
495: }
496: if (! defined($stats{'min_percent'}) ||
497: $stats{'min_percent'} > $low_percent) {
498: $stats{'min_percent'} = $low_percent;
499: }
500: if ($stats{'min_percent'} > $high_percent) {
501: $stats{'min_percent'} = $high_percent;
502: }
503: if (! defined($stats{'max_percent'}) ||
504: $stats{'max_percent'} < $low_percent) {
505: $stats{'max_percent'} = $low_percent;
506: }
507: if ($stats{'max_percent'} < $high_percent) {
508: $stats{'max_percent'} = $high_percent;
509: }
510: if (! defined($stats{'lowest_ans'}) ||
511: $stats{'lowest_ans'} > $subm{'correct'}) {
512: $stats{'lowest_ans'} = $subm{'correct'};
513: }
514: if (! defined($stats{'highest_ans'}) ||
515: $stats{'highest_ans'} < $subm{'correct'}) {
516: $stats{'highest_ans'} = $subm{'correct'};
517: }
518: #
519: $subm{'submission'} =~ s/=\d+\s*$//;
520: if (&$function(\%subm)) {
521: my $scaled = '1';
522: my ($sname,$sdom) = split(':',$subm{'student'});
523: my ($myunit,$mysub) = ($subm{'unit'},$subm{'submission'});
524: my $result =
525: &capa::caparesponse_get_real_response($myunit,
526: $mysub,
527: \$scaled);
528: # &Apache::lonnet::logthis('scaled = '.$scaled.' result ='.$result);
529: next if (! defined($scaled));
530: # next if ($result ne '6');
531: my $submission = $scaled;
532: $students{$subm{'student'}}++;
533: $stats{'submission_count'}++;
534: if (&numerical_submission_is_correct($subm{'award'})) {
535: $stats{'correct_count'}++;
536: $submission_data{$subm{'correct'}}->{$submission}->[0]++;
537: } elsif (&numerical_submission_is_incorrect($subm{'award'})) {
538: $stats{'incorrect_count'}++;
539: $submission_data{$subm{'correct'}}->{$submission}->[1]++;
540: }
541: }
542: }
543: $stats{'correct_count'} |= 0;
544: $stats{'incorrect_count'} |= 0;
545: $stats{'students'}=scalar(keys(%students));
546: return (\%submission_data,\%stats);
547: }
548:
549: sub numerical_submission_is_correct {
550: my ($award) = @_;
551: if ($award =~ /^(APPROX_ANS|EXACT_ANS)$/) {
552: return 1;
553: } else {
554: return 0;
555: }
556: }
557:
558: sub numerical_submission_is_incorrect {
559: my ($award) = @_;
560: if ($award =~ /^(INCORRECT)$/) {
561: return 1;
562: } else {
563: return 0;
564: }
565: }
566:
567: sub numerical_bin_table {
568: my ($bins,$labels,$incorrect,$correct,$count)=@_;
569: my $table =
570: '<table><tr><th>'.&mt('Bar').'</th>'.
571: '<th colspan="3">'.&mt('Range').'</th>'.
572: '<th>'.&mt('Incorrect').'</th>'.
573: '<th>'.&mt('Correct').'</th>'.
574: '<th>'.&mt('Count').'</th>'.
575: '</tr>'.$/;
576: for (my $i=0;$i<scalar(@{$bins}-1);$i++) {
577: my $lownum = $bins->[$i];
578: if ($i == 0) { $lownum = '-∞'; }
579: my $highnum = $bins->[$i+1];
580: if ($i == scalar(@{$bins})-2) { $highnum = '∞'; }
581: $table .=
582: '<tr>'.
583: '<td>'.$labels->[$i].'</td>'.
584: '<td align="right">'.$lownum.'</td>'.
585: '<td> - </td>'.
586: '<td align="right">'.$highnum.'</td>'.
587: '<td align="right">'.$incorrect->[$i].'</td>'.
588: '<td align="right">'.$correct->[$i].'</td>'.
589: '<td align="right">'.$count->[$i].'</td>'.
590: '</tr>'.$/;
591: }
592: $table.= '</table>';
593: return $table;
594: }
595:
596: sub numerical_determine_answers {
597: my ($r,$resource,$partid,$respid,$students)=@_;
598: my $c = $r->connection();
599: #
600: my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin
601: ($r,'Student Answer Compilation Status',
602: 'Student Answer Compilation Progress', scalar(@$students),
603: 'inline',undef,'Statistics','stats_status');
604: #
605: # Read in the cache (if it exists) before we start timing things.
606: &Apache::lonstathelpers::ensure_proper_cache($resource->{'symb'});
607: #
608: my $correct;
609: my %answers;
610: foreach my $student (@$students) {
611: last if ($c->aborted());
612: my $sname = $student->{'username'};
613: my $sdom = $student->{'domain'};
614: # analyze problem
615: my $analysis =
616: &Apache::lonstathelpers::analyze_problem_as_student($resource,
617: $sname,
618: $sdom);
619: # make the key
620: my $key = $partid.'.'.$respid;
621: foreach my $item ('answer','unit','ans_high','ans_low') {
622: $correct->{$sname.':'.$sdom}->{$item} =
623: $analysis->{$key.'.'.$item}->[0];
624: }
625: $answers{$analysis->{$key.'.answer'}->[0]}++;
626: &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
627: &mt('last student'));
628: }
629: &Apache::lonstathelpers::write_analysis_cache();
630: &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
631: return ($correct,\%answers);
632: }
633:
634: #
635: # Inputs: $r, $width, $height, $data
636: # $n = number of students
637: # $data = hashref of $answer => $frequency pairs
638: sub numerical_one_dimensional_plot {
639: my ($r,$width,$height,$data)=@_;
640: #
641: # Compute data -> image scaling factors
642: my $max_y = 0;
643: my $min_x = undef;
644: my $max_x = undef;
645: my $n = 0;
646: while (my ($answer,$count) = each(%$data)) {
647: $n+=$count;
648: $max_y = $count if ($max_y < $count);
649: if (! defined($min_x) || $answer < $min_x) {
650: $min_x = $answer;
651: }
652: if (! defined($max_x) || $answer > $max_x) {
653: $max_x = $answer;
654: }
655: }
656: #
657: my $min_max_difference = $max_x - $min_x;
658: if (! defined($min_max_difference) || $min_max_difference == 0) {
659: $min_max_difference = 1;
660: }
661: my $h_scale = ($width-10)/$min_max_difference;
662: #
663: my $ticscale = 5;
664: if ($max_y * $ticscale > $height/2) {
665: $ticscale = int($height/2/$max_y);
666: $ticscale = 1 if ($ticscale < 1);
667: }
668: #
669: # Create the plot
670: my $plot =
671: qq{<drawimage width="$width" height="$height" bgcolor="transparent" >};
672: while (my ($answer,$count) = each(%$data)) {
673: my $xloc = 5+$h_scale*($answer - $min_x);
674: my $top = $height/2-$count*$ticscale;
675: my $bottom = $height/2+$count*$ticscale;
676: $plot .= &line($xloc,$top,$xloc,$bottom,'888888',1);
677: }
678: #
679: # Put the scale on last to ensure it is on top of the data.
680: if ($min_x < 0 && $max_x > 0) {
681: my $circle_x = 5+$h_scale*abs($min_x); # '0' in data coordinates
682: my $r = 4;
683: $plot .= &line(5,$height/2,$circle_x-$r,$height/2,'000000',1);
684: $plot .= &circle($circle_x,$height/2,$r+1,'000000');
685: $plot .= &line($circle_x+$r,$height/2,$width-5,$height/2,'000000',1);
686: } else {
687: $plot .= &line(5,$height/2,$width-5,$height/2,'000000',1);
688: }
689: $plot .= '</drawimage>';
690: my $plotresult = &Apache::lonxml::xmlparse($r,'web',$plot);
691: my $result = '<table>'.
692: '<tr><td colspan="3" align="center">'.
693: '<font size="+2">'.&mt('Distribution of correct answers').'</font>'.
694: '<br />'.&mt('[_1] students, [_2] distinct correct answers',
695: $n,scalar(keys(%$data))).
696: '<br />'.&mt('Maximum number of coinciding values: [_1]',$max_y).
697: '</td></tr>'.
698: '<tr>'.
699: '<td valign="center">'.$min_x.'</td>'.
700: '<td>'.$plotresult.'</td>'.
701: '<td valign="center">'.$max_x.'</td>'.
702: '</tr>'.
703: '</table>';
704: return $result;
705: }
706:
707: ##
708: ## Helper subroutines for <drawimage>.
709: ## These should probably go somewhere more suitable soon.
710: sub line {
711: my ($x1,$y1,$x2,$y2,$color,$thickness) = @_;
712: return qq{<line x1="$x1" y1="$y1" x2="$x2" y2="$y2" color="$color" thickness="$thickness" />};
713: }
714:
715: sub text {
716: my ($x,$y,$color,$text,$font,$direction) = @_;
717: if (! defined($font) || $font !~ /^(tiny|small|medium|large|giant)$/) {
718: $font = 'medium';
719: }
720: if (! defined($direction) || $direction ne 'vertical') {
721: $direction = '';
722: }
723: return qq{<text x="$x" y="$y" color="$color" font="$font" direction="$direction" >$text</text>};
724: }
725:
726: sub rectangle {
727: my ($x1,$y1,$x2,$y2,$color,$thickness,$filled) = @_;
728: return qq{<rectangle x1="$x1" y1="$y1" x2="$x2" y2="$y2" color="$color" thickness="$thickness" filled="$filled" />};
729: }
730:
731: sub arc {
732: my ($x,$y,$width,$height,$start,$end,$color,$thickness,$filled)=@_;
733: return qq{<arc x="$x" y="$y" width="$width" height="$height" start="$start" end="$end" color="$color" thickness="$thickness" filled="$filled" />};
734: }
735:
736: sub circle {
737: my ($x,$y,$radius,$color,$thickness,$filled)=@_;
738: return &arc($x,$y,$radius,$radius,0,360,$color,$thickness,$filled);
739: }
740:
741: #########################################################
742: #########################################################
743: ##
744: ## Radio Response Routines
745: ##
746: #########################################################
747: #########################################################
748: sub radio_response_analysis {
749: my ($r,$problem,$problem_analysis,$students) = @_;
750: #
751: if ($env{'form.AnalyzeOver'} !~ /^(tries|time)$/) {
752: $r->print('Bad request');
753: }
754: #
755: my ($resource,$partid,$respid) = ($problem->{'resource'},
756: $problem->{'part'},
757: $problem->{'respid'});
758: #
759: my $analysis_html;
760: my $foildata = $problem_analysis->{'_Foils'};
761: my ($table,$foils,$concepts) = &build_foil_index($problem_analysis);
762: if (! defined($concepts)) {
763: $concepts = [];
764: }
765: #
766: my %true_foils;
767: my $num_true = 0;
768: if (! $problem_analysis->{'answercomputed'}) {
769: foreach my $foil (@$foils) {
770: if ($foildata->{$foil}->{'value'} eq 'true') {
771: $true_foils{$foil}++;
772: }
773: }
774: $num_true = scalar(keys(%true_foils));
775: }
776: #
777: $analysis_html .= $table;
778: # Gather student data
779: my $response_data = &Apache::loncoursedata::get_response_data
780: ([&Apache::lonstatistics::get_selected_sections()],
781: $Apache::lonstatistics::enrollment_status,
782: $resource->symb,$respid);
783: my $correct; # either a hash reference or a scalar
784: if ($problem_analysis->{'answercomputed'} || scalar(@$concepts) > 1) {
785: # This takes a while for large classes...
786: &Apache::lonstathelpers::GetStudentAnswers($r,$problem,$students,
787: 'Statistics',
788: 'stats_status');
789: foreach my $student (@$students) {
790: my ($idx,@remainder) = split('&',$student->{'answer'});
791: my ($answer) = ($remainder[$idx]=~/^(.*)=([^=]*)$/);
792: $correct->{$student->{'username'}.':'.$student->{'domain'}}=
793: &Apache::lonnet::unescape($answer);
794: }
795: } else {
796: foreach my $foil (keys(%$foildata)) {
797: if ($foildata->{$foil}->{'value'} eq 'true') {
798: $correct = $foildata->{$foil}->{'name'};
799: }
800: }
801: }
802: #
803: if (! defined($response_data) || ref($response_data) ne 'ARRAY' ) {
804: $analysis_html = '<h2>'.
805: &mt('There is no submission data for this resource').
806: '</h2>';
807: $r->print($analysis_html);
808: return;
809: }
810: #
811: $analysis_html.='<table>';
812: for (my $plot_num = 1;$plot_num<=$env{'form.NumPlots'};$plot_num++) {
813: # classify data ->correct foil -> selected foil
814: my ($restriction_function,
815: $correct_foil_title,$incorrect_foil_title,
816: $pre_graph_text,$post_graph_text,
817: $no_data_text,@extra_data);
818: if ($env{'form.AnalyzeOver'} eq 'tries') {
819: $restriction_function = sub {($_[0]->{'tries'} == $plot_num?1:0)};
820: $correct_foil_title = 'Attempt '.$plot_num;
821: $incorrect_foil_title = 'Attempt '.$plot_num;
822: $pre_graph_text =
823: 'Attempt [_1], [_2] submissions, [_3] correct, [_4] incorrect';
824: $post_graph_text = '';
825: $no_data_text = 'No data exists for attempt [_1]';
826: } elsif ($env{'form.AnalyzeOver'} eq 'time') {
827: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
828: ('startdate_'.$plot_num);
829: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
830: ('enddate_'.$plot_num);
831: ($starttime,$endtime) = &ensure_start_end_times
832: ($starttime,$endtime,
833: &get_time_from_row($response_data->[0]),
834: &get_time_from_row($response_data->[-1]),
835: $plot_num);
836: $pre_graph_text =
837: 'Data from [_6] to [_7]<br /> [_2] submissions from [_5] students, [_3] correct, [_4] incorrect';
838: $extra_data[0] = &Apache::lonlocal::locallocaltime($starttime);
839: $extra_data[1] = &Apache::lonlocal::locallocaltime($endtime);
840: #
841: $post_graph_text =
842: &mt('Start time: [_1]',
843: &Apache::lonhtmlcommon::date_setter
844: ('Statistics','startdate_'.$plot_num,$starttime)).
845: '<br />'.
846: &mt('End time: [_1]',
847: &Apache::lonhtmlcommon::date_setter
848: ('Statistics','enddate_'.$plot_num,$endtime));
849: $restriction_function =
850: sub {
851: my $t = $_[0]->{'timestamp'};
852: if ($t >= $starttime && $t < $endtime) {
853: return 1;
854: } else {
855: return 0;
856: }
857: };
858: $no_data_text = 'No data for [_5] to [_6]';
859: }
860: my $foil_choice_data =
861: &classify_response_data($response_data,$correct,
862: $restriction_function);
863: # &Apache::lonstathelpers::log_hash_ref($foil_choice_data);
864: my $answers;
865: if (ref($correct)) {
866: my %tmp;
867: foreach my $foil (values(%$correct)) {
868: $tmp{$foil}++;
869: }
870: $answers = [keys(%tmp)];
871: } else {
872: $answers = [$correct];
873: }
874: # Concept Plot
875: my $concept_plot = '';
876: if (scalar(@$concepts) > 1) {
877: $concept_plot = &RR_concept_plot($concepts,$foil_choice_data,
878: 'Correct Concepts');
879: }
880: # % Choosing plot
881: my $choice_plot = &RR_create_percent_selected_plot
882: ($concepts,$foils,$foil_choice_data,$correct_foil_title);
883: # for each correct foil, how did they mark it? (stacked bar graph)
884: my ($stacked_plot,$count_by_foil);
885: if ($problem_analysis->{'answercomputed'} || $num_true > 1) {
886: ($stacked_plot,$count_by_foil) =
887: &RR_create_stacked_selection_plot($foils,$foil_choice_data,
888: $incorrect_foil_title,
889: \%true_foils);
890: }
891: #
892: if ($concept_plot ne '' ||
893: $choice_plot ne '' ||
894: $stacked_plot ne '') {
895: my $correct = $foil_choice_data->{'_correct'};
896: $correct |= 0;
897: my $incorrect = $foil_choice_data->{'_count'}-$correct;
898: $analysis_html.= '<tr><td colspan="4" align="center">'.
899: '<font size="+1">'.
900: &mt($pre_graph_text,
901: $plot_num,$foil_choice_data->{'_count'},
902: $correct,
903: $incorrect,
904: $foil_choice_data->{'_students'},
905: @extra_data).
906: '</td></tr>'.$/;
907: $analysis_html.=
908: '<tr>'.
909: '<td>'.$concept_plot.'</td>'.
910: '<td>'.$choice_plot.'</td>';
911: if ($stacked_plot ne '') {
912: $analysis_html .=
913: '<td>'.$stacked_plot.'</td>'.
914: '<td>'.&build_foil_key($foils,$count_by_foil).'</td>';
915: } else {
916: $analysis_html .= ('<td></td>'x2);
917: }
918: $analysis_html.='</tr>'.$/;
919: if (defined($post_graph_text)) {
920: $analysis_html.= '<tr><td colspan="4" align="center">'.
921: $post_graph_text.'</td></tr>'.$/;
922: }
923: } elsif ($no_data_text ne '') {
924: $analysis_html.='<tr><td colspan="4" align="center">'.
925: &mt($no_data_text,
926: $plot_num,$foil_choice_data->{'_count'},
927: $correct,
928: $foil_choice_data->{'_count'}-$correct,
929: @extra_data);
930: if (defined($post_graph_text)) {
931: $analysis_html.='<br />'.$post_graph_text;
932: }
933: $analysis_html.='</td></tr>'.$/;
934: }
935: } # end of loop for plots
936: $analysis_html.='</table>';
937: $r->print($analysis_html);
938: }
939:
940: sub ensure_start_end_times {
941: my ($start,$end,$first,$last,$plot_num) = @_;
942: if (! defined($start) || ! defined($end)) {
943: my $sec_in_day = 86400;
944: my ($sday,$smon,$syear) =
945: (localtime($last - $sec_in_day*($plot_num-1)))[3..5];
946: $start = &Time::Local::timelocal(0,0,0,$sday,$smon,$syear);
947: $end = $start + $sec_in_day;
948: if ($plot_num == $env{'form.NumPlots'}) {
949: $start = $first;
950: }
951: }
952: return ($start,$end);
953: }
954:
955: sub RR_concept_plot {
956: my ($concepts,$foil_data,$title) = @_;
957: #
958: my %correct_by_concept;
959: my %incorrect_by_concept;
960: my %true;
961: foreach my $concept (@$concepts) {
962: foreach my $foil (@{$concept->{'foils'}}) {
963: next if (! exists($foil_data->{$foil}));
964: foreach my $choice (keys(%{$foil_data->{$foil}})) {
965: if ($choice eq $foil) {
966: $correct_by_concept{$concept->{'name'}} +=
967: $foil_data->{$foil}->{$choice};
968: } else {
969: $incorrect_by_concept{$concept->{'name'}} +=
970: $foil_data->{$foil}->{$choice};
971: }
972: }
973: }
974: }
975: #
976: # need arrays for incorrect and correct because we want to use different
977: # colors for them
978: my @correct;
979: #
980: my $total =0;
981: for (my $i=0;$i<scalar(@$concepts);$i++) {
982: my $concept = $concepts->[$i];
983: $correct[$i] = $correct_by_concept{$concept->{'name'}};
984: $total += $correct_by_concept{$concept->{'name'}}+
985: $incorrect_by_concept{$concept->{'name'}};
986: }
987: if ($total == 0) { return ''; };
988: for (my $i=0;$i<=$#correct;$i++) {
989: $correct[$i] = sprintf('%0f',$correct[$i]/$total*100);
990: }
991: my $xlabel = 'concept';
992: my $plot= &Apache::loncommon::DrawBarGraph($title,
993: $xlabel,
994: 'Percent Choosing',
995: 100,
996: ['#33ff00','#ff3300'],
997: undef,
998: \@correct);
999: return $plot;
1000: }
1001:
1002: sub RR_create_percent_selected_plot {
1003: my ($concepts,$foils,$foil_data,$title) = @_;
1004: #
1005: if ($foil_data->{'_count'} == 0) { return ''; };
1006: my %correct_selections;
1007: my %incorrect_selections;
1008: foreach my $foil (@$foils) {
1009: # foil_data has format $foil_data->{true_foil}->{selected foil}=count
1010: next if (! exists($foil_data->{$foil}));
1011: while (my ($f,$count)= each(%{$foil_data->{$foil}})) {
1012: if ($f eq $foil) {
1013: $correct_selections{$foil} += $count;
1014: } else {
1015: $incorrect_selections{$f} += $count;
1016: }
1017: }
1018: }
1019: #
1020: # need arrays for incorrect and correct because we want to use different
1021: # colors for them
1022: my @correct;
1023: my @incorrect;
1024: #
1025: my $total = $foil_data->{'_count'};
1026: for (my $i=0;$i<scalar(@$foils);$i++) {
1027: my $foil = $foils->[$i];
1028: $correct[$i] = $correct_selections{$foil};
1029: $incorrect[$i] = $incorrect_selections{$foil};
1030: }
1031: for (my $i=0;$i<=$#correct;$i++) {
1032: $correct[$i] = sprintf('%2f',$correct[$i]/$total*100);
1033: }
1034: for (my $i=0;$i<=$#incorrect;$i++) {
1035: $incorrect[$i] = sprintf('%2f',$incorrect[$i]/$total*100);
1036: }
1037: #
1038: # Put a blank in the data sets between concepts, if there are concepts
1039: my @labels;
1040: if (defined($concepts) && scalar(@$concepts) > 1) {
1041: my @new_correct;
1042: my @new_incorrect;
1043: my $foil_count = 0;
1044: foreach my $concept (@$concepts) {
1045: foreach (@{$concept->{'foils'}}) {
1046: push(@new_correct, $correct[$foil_count]);
1047: push(@new_incorrect,$incorrect[$foil_count]);
1048: push(@labels,++$foil_count);
1049: }
1050: push(@new_correct,'');
1051: push(@new_incorrect,'');
1052: push(@labels,'');
1053: }
1054: @correct = @new_correct;
1055: @incorrect = @new_incorrect;
1056: } else {
1057: @labels = (1 .. scalar(@correct));
1058: }
1059: #
1060: my $xlabel = 'foil chosen';
1061: my $plot= &Apache::loncommon::DrawBarGraph($title,
1062: $xlabel,
1063: 'Percent Choosing',
1064: 100,
1065: ['#33ff00','#ff3300'],
1066: \@labels,
1067: \@correct,
1068: \@incorrect);
1069: return $plot;
1070: }
1071:
1072: sub RR_create_stacked_selection_plot {
1073: my ($foils,$foil_data,$title,$true_foils)=@_;
1074: #
1075: my @dataset; # array of array refs - multicolor rows $datasets[row]->[col]
1076: my @labels;
1077: my $count;
1078: my %column; # maps foil name to column in @datasets
1079: for (my $i=0;$i<scalar(@$foils);$i++) {
1080: my $foil = $foils->[$i];
1081: if (defined($true_foils) && scalar(keys(%$true_foils)) > 0 ) {
1082: next if (! $true_foils->{$foil} );
1083: push(@labels,$i+1);
1084: } else {
1085: next if (! exists($foil_data->{$foil}));
1086: push(@labels,$i+1);
1087: }
1088: next if (! exists($foil_data->{$foils->[$i]}));
1089: $column{$foil}= $count++;
1090: for (my $j=0;$j<scalar(@$foils);$j++) {
1091: my $value = 0;
1092: if ($i != $j ) {
1093: $value += $foil_data->{$foil}->{$foils->[$j]};
1094: }
1095: $dataset[$j]->[$column{$foil}]=$value;
1096: }
1097: }
1098: #
1099: return '' if (! scalar(keys(%column)));
1100: #
1101: my $grand_total = 0;
1102: my %count_per_foil;
1103: while (my ($foil,$bar) = each (%column)) {
1104: my $bar_total = 0;
1105: for (my $j=0;$j<scalar(@dataset);$j++) {
1106: $bar_total += $dataset[$j]->[$bar];
1107: }
1108: next if ($bar_total == 0);
1109: for (my $j=0;$j<scalar(@dataset);$j++) {
1110: $dataset[$j]->[$bar] =
1111: sprintf('%2f',$dataset[$j]->[$bar]/$bar_total * 100);
1112: }
1113: $count_per_foil{$foil}=' ( '.$bar_total.' )';
1114: $grand_total += $bar_total;
1115: }
1116: if ($grand_total == 0) {
1117: return ('',undef);
1118: }
1119: my @empty_row = ();
1120: foreach (@{$dataset[0]}) {
1121: push(@empty_row,0);
1122: }
1123: #
1124: my $graph = &Apache::loncommon::DrawBarGraph
1125: ($title,'Correct Foil','foils chosen Incorrectly',
1126: 100,$plotcolors,\@labels,\@empty_row,@dataset);
1127: return ($graph,\%count_per_foil);
1128: }
1129:
1130:
1131: #########################################################
1132: #########################################################
1133: ##
1134: ## Misc routines
1135: ##
1136: #########################################################
1137: #########################################################
1138:
1139: # if $correct is a hash ref, it is assumed to be indexed by student names.
1140: # the values are assumed to be hash refs with a key of 'answer'.
1141: sub classify_response_data {
1142: my ($full_row_data,$correct,$function) = @_;
1143: my %submission_data;
1144: my %students;
1145: my $max=0;
1146: foreach my $row (@$full_row_data) {
1147: my %subm = &hashify_attempt($row);
1148: if (ref($correct) eq 'HASH') {
1149: $subm{'correct'} = $correct->{$subm{'student'}};
1150: } else {
1151: $subm{'correct'} = $correct;
1152: }
1153: $subm{'submission'} =~ s/=\d+\s*$//;
1154: if (&$function(\%subm)) {
1155: $students{$subm{'student'}}++;
1156: $submission_data{'_count'}++;
1157: if (&submission_is_correct($subm{'award'})) {
1158: $submission_data{'_correct'}++;
1159: }
1160:
1161: if($max<++$submission_data{$subm{'correct'}}->{$subm{'submission'}}) {
1162: $max=$submission_data{$subm{'correct'}}->{$subm{'submission'}};
1163: }
1164: }
1165: }
1166: $submission_data{'_max'} = $max;
1167: $submission_data{'_students'}=scalar(keys(%students));
1168: return \%submission_data;
1169: }
1170:
1171:
1172: #########################################################
1173: #########################################################
1174: ##
1175: ## Option Response Routines
1176: ##
1177: #########################################################
1178: #########################################################
1179: sub OptionResponseAnalysis {
1180: my ($r,$problem,$problem_data,$Students) = @_;
1181: my ($resource,$respid) = ($problem->{'resource'},
1182: $problem->{'respid'});
1183: # Note: part data is not needed.
1184: my $PerformanceData = &Apache::loncoursedata::get_response_data
1185: ([&Apache::lonstatistics::get_selected_sections()],
1186: $Apache::lonstatistics::enrollment_status,
1187: $resource->symb,$respid);
1188: if (! defined($PerformanceData) ||
1189: ref($PerformanceData) ne 'ARRAY' ) {
1190: $r->print('<h2>'.
1191: &mt('There is no student data for this problem.').
1192: '</h2>');
1193: } else {
1194: $r->rflush();
1195: if ($env{'form.AnalyzeOver'} eq 'tries') {
1196: my $analysis_html = &OR_tries_analysis($r,
1197: $PerformanceData,
1198: $problem_data);
1199: $r->print($analysis_html);
1200: $r->rflush();
1201: } elsif ($env{'form.AnalyzeOver'} eq 'time') {
1202: my $analysis_html = &OR_time_analysis($PerformanceData,
1203: $problem_data);
1204: $r->print($analysis_html);
1205: $r->rflush();
1206: } else {
1207: $r->print('<h2>'.
1208: &mt('The analysis you have selected is '.
1209: 'not supported at this time').
1210: '</h2>');
1211: }
1212: }
1213: }
1214:
1215: #########################################################
1216: #
1217: # Option Response: tries Analysis
1218: #
1219: #########################################################
1220: sub OR_tries_analysis {
1221: my ($r,$PerformanceData,$ORdata) = @_;
1222: my $mintries = 1;
1223: my $maxtries = $env{'form.NumPlots'};
1224: my ($table,$Foils,$Concepts) = &build_foil_index($ORdata);
1225: if (! defined($Concepts)) {
1226: $Concepts = [];
1227: }
1228: my %response_data = &OR_analyze_by_tries($r,$PerformanceData,
1229: $mintries,$maxtries);
1230: my $analysis = '';
1231: #
1232: # Compute the data necessary to make the plots
1233: my @foil_plot;
1234: my @concept_data;
1235: for (my $j=0;$j<=scalar(@$Concepts);$j++) {
1236: my $concept = $Concepts->[$j];
1237: foreach my $foilid (@{$concept->{'foils'}}) {
1238: for (my $try=$mintries;$try<=$maxtries;$try++) {
1239: # concept analysis data
1240: $concept_data[$j]->[$try]->{'_correct'} +=
1241: $response_data{$foilid}->[$try]->{'_correct'};
1242: $concept_data[$j]->[$try]->{'_total'} +=
1243: $response_data{$foilid}->[$try]->{'_total'};
1244: #
1245: # foil analysis data
1246: if ($response_data{$foilid}->[$try]->{'_total'} == 0) {
1247: push(@{$foil_plot[$try]->{'_correct'}},0);
1248: } else {
1249: push(@{$foil_plot[$try]->{'_correct'}},
1250: 100*$response_data{$foilid}->[$try]->{'_correct'}/
1251: $response_data{$foilid}->[$try]->{'_total'});
1252: }
1253: foreach my $option (@{$ORdata->{'_Options'}}) {
1254: push(@{$foil_plot[$try]->{'_total'}},
1255: $response_data{$foilid}->[$try]->{'_total'});
1256: if ($response_data{$foilid}->[$try]->{'_total'} == 0) {
1257: push (@{$foil_plot[$try]->{$option}},0);
1258: } else {
1259: if ($response_data{$foilid}->[$try]->{'_total'} ==
1260: $response_data{$foilid}->[$try]->{'_correct'}) {
1261: push(@{$foil_plot[$try]->{$option}},0);
1262: } else {
1263: push (@{$foil_plot[$try]->{$option}},
1264: 100 *
1265: $response_data{$foilid}->[$try]->{$option} /
1266: ($response_data{$foilid}->[$try]->{'_total'}
1267: -
1268: $response_data{$foilid}->[$try]->{'_correct'}
1269: ));
1270: }
1271: }
1272: } # End of foreach my $option
1273: }
1274: } # End of foreach my $foilid
1275: } # End of concept loops
1276: #
1277: # Build a table for the plots
1278: my $analysis_html = "<br /><table>\n";
1279: my $optionkey = &build_option_index($ORdata);
1280: my $num_concepts = 1;
1281: if (defined($Concepts)) { $num_concepts = scalar(@$Concepts); }
1282: #
1283: for (my $try=$mintries;$try<=$maxtries;$try++) {
1284: if (! defined($response_data{'_total'}->[$try]) ||
1285: $response_data{'_total'}->[$try] == 0) {
1286: if ($try > 1) {
1287: $analysis_html.= '<tr><td align="center" colspan="4"><b>'.
1288: &mt('None of the selected students attempted the problem more than [_1] times.',$try-1).
1289: '</b></td></tr>';
1290: } else {
1291: $analysis_html.= '<tr><td colspan="4" align="center"><b>'.
1292: &mt('None of the selected students have attempted the problem').'</b></td></tr>';
1293: }
1294: last;
1295: }
1296: my $concept_graph='';
1297: if ($num_concepts > 1) {
1298: #
1299: # Create concept plot
1300: my @concept_plot_data;
1301: for (my $j=0;$j<=$#concept_data;$j++) {
1302: my $total = $concept_data[$j]->[$try]->{'_total'};
1303: if ($total == 0) {
1304: $concept_plot_data[$j] = 0;
1305: } else {
1306: $concept_plot_data[$j] = 100 *
1307: sprintf('%0.3f',
1308: $concept_data[$j]->[$try]->{'_correct'} /
1309: $total);
1310: }
1311: }
1312: #
1313: $concept_graph = &Apache::loncommon::DrawBarGraph
1314: ('Correct Concepts','Concept Number','Percent Correct',
1315: 100,$plotcolors,undef,\@concept_plot_data,{xskip=>1});
1316: }
1317: #
1318: # Create Foil Plots
1319: my $data_count = $response_data{'_total'}->[$try];
1320: my $correct = $response_data{'_correct'}->[$try];
1321: $correct |= 0;
1322: my @Datasets;
1323: foreach my $option ('_correct',@{$ORdata->{'_Options'}}) {
1324: next if (! exists($foil_plot[$try]->{$option}));
1325: push(@Datasets,$foil_plot[$try]->{$option});
1326: }
1327: #
1328: # Put a blank in the data set between concepts
1329: for (my $set =0;$set<=$#Datasets;$set++) {
1330: my @Data = @{$Datasets[$set]};
1331: my $idx = 0;
1332: foreach my $concept (@{$Concepts}) {
1333: foreach my $foilid (@{$concept->{'foils'}}) {
1334: $Datasets[$set]->[$idx++]=shift(@Data);
1335: }
1336: if ($concept->{'name'} ne $Concepts->[-1]->{'name'}) {
1337: $Datasets[$set]->[$idx++] = 0;
1338: }
1339: }
1340: }
1341: #
1342: # Set up the labels needed for the bar graph
1343: my @Labels;
1344: my $idx = 1;
1345: foreach my $concept (@{$Concepts}) {
1346: foreach my $foilid (@{$concept->{'foils'}}) {
1347: push(@Labels,$idx++);
1348: }
1349: push(@Labels,'');
1350: }
1351: #
1352: my $correct_graph = &Apache::loncommon::DrawBarGraph
1353: ('Correct Statements','Statement','% Answered Correct',
1354: 100,$plotcolors,\@Labels,$Datasets[0],{xskip=>1});
1355:
1356: #
1357: #
1358: next if (! defined($Datasets[0]));
1359: for (my $i=0; $i< scalar(@{$Datasets[0]});$i++) {
1360: $Datasets[0]->[$i]=0;
1361: }
1362: my $count = $response_data{'_total'}->[$try] -
1363: $response_data{'_correct'}->[$try];
1364: my $incorrect_graph = &Apache::loncommon::DrawBarGraph
1365: ('Incorrect Statements','Statement','% Chosen Incorrectly',
1366: 100,$plotcolors,\@Labels,@Datasets,{xskip=>1});
1367: $analysis_html.=
1368: '<tr><td colspan="4" align="center">'.
1369: '<font size="+1">'.
1370: &mt('Attempt [_1], [_2] submissions, [_3] correct, [_4] incorrect',
1371: $try,$data_count,$correct,$data_count-$correct).
1372: '</font>'.'</td></tr>'.$/.
1373: '<tr>'.
1374: '<td>'.$concept_graph.'</td>'.
1375: '<td>'.$correct_graph.'</td>'.
1376: '<td>'.$incorrect_graph.'</td>'.
1377: '<td>'.$optionkey.'<td>'.
1378: '</tr>'.$/;
1379: }
1380: $analysis_html .= "</table>\n";
1381: $table .= $analysis_html;
1382: return $table;
1383: }
1384:
1385: sub OR_analyze_by_tries {
1386: my ($r,$PerformanceData,$mintries,$maxtries) = @_;
1387: my %Trydata;
1388: $mintries = 1 if (! defined($mintries) || $mintries < 1);
1389: $maxtries = $mintries if (! defined($maxtries) || $maxtries < $mintries);
1390: my @students;
1391: foreach my $row (@$PerformanceData) {
1392: next if (! defined($row));
1393: my $tries = &get_tries_from_row($row);
1394: my %Row = &Process_OR_Row($row);
1395: next if (! %Row);
1396: my $student_id = $row->[&Apache::loncoursedata::RD_student_id()];
1397: $students[$tries]->{$student_id}++;
1398: while (my ($foilid,$href) = each(%Row)) {
1399: if (! ref($href)) {
1400: $Trydata{$foilid}->[$tries] += $href;
1401: next;
1402: }
1403: while (my ($option,$value) = each(%$href)) {
1404: $Trydata{$foilid}->[$tries]->{$option}+=$value;
1405: }
1406: }
1407: }
1408: for (my $try=$mintries;$try<=$maxtries;$try++) {
1409: $Trydata{'_studentcount'}->[$try] = scalar(keys(%{$students[$try]}));
1410: }
1411: return %Trydata;
1412: }
1413:
1414: #########################################################
1415: #
1416: # Option Response: Time Analysis
1417: #
1418: #########################################################
1419: sub OR_time_analysis {
1420: my ($performance_data,$ORdata) = @_;
1421: my ($table,$Foils,$Concepts) = &build_foil_index($ORdata);
1422: my $foilkey = &build_option_index($ORdata);
1423: my $num_concepts = 1;
1424: if (defined($Concepts)) { $num_concepts = scalar(@$Concepts); }
1425: #
1426: if ($num_concepts < 2) {
1427: $table = '<h3>'.
1428: &mt('Not enough data for concept analysis. '.
1429: 'Performing Foil Analysis').
1430: '</h3>'.$table;
1431: }
1432: #
1433: my $num_plots = $env{'form.NumPlots'};
1434: my $num_data = scalar(@$performance_data)-1;
1435: #
1436: my $current_index;
1437: $table .= "<table>\n";
1438: for (my $i=0;$i<$num_plots;$i++) {
1439: ##
1440: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
1441: ('startdate_'.$i);
1442: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
1443: ('enddate_'.$i);
1444: if (! defined($starttime) || ! defined($endtime)) {
1445: my $sec_in_day = 86400;
1446: my $last_sub_time = &get_time_from_row($performance_data->[-1]);
1447: my ($sday,$smon,$syear) =
1448: (localtime($last_sub_time - $sec_in_day*$i))[3..5];
1449: $starttime = &Time::Local::timelocal(0,0,0,$sday,$smon,$syear);
1450: $endtime = $starttime + $sec_in_day;
1451: if ($i == ($num_plots -1 )) {
1452: $starttime = &get_time_from_row($performance_data->[0]);
1453: }
1454: }
1455: $table .= '<tr><td colspan="4" align="center"><font size="+1">'.
1456: &mt('Data from [_1] to [_2]',
1457: &Apache::lonlocal::locallocaltime($starttime),
1458: &Apache::lonlocal::locallocaltime($endtime)).
1459: '</font></td></tr>'.$/;
1460: my $startdateform = &Apache::lonhtmlcommon::date_setter
1461: ('Statistics','startdate_'.$i,$starttime);
1462: my $enddateform = &Apache::lonhtmlcommon::date_setter
1463: ('Statistics','enddate_'.$i,$endtime);
1464: #
1465: my $begin_index;
1466: my $end_index;
1467: my $j;
1468: while (++$j < scalar(@$performance_data)) {
1469: last if (&get_time_from_row($performance_data->[$j])
1470: > $starttime);
1471: }
1472: $begin_index = $j;
1473: while ($j < scalar(@$performance_data)) {
1474: if (&get_time_from_row($performance_data->[$j]) > $endtime) {
1475: last;
1476: } else {
1477: $j++;
1478: }
1479: }
1480: $end_index = $j;
1481: ##
1482: my ($processed_time_data,$correct,$data_count,$student_count) =
1483: &OR_time_process_data($performance_data,$begin_index,$end_index);
1484: $correct |= 0;
1485: ##
1486: $table .= '<tr><td colspan="4" align="center"><font size="+1">'.
1487: &mt('[_1] submissions from [_2] students, [_3] correct, [_4] incorrect',
1488: $data_count,$student_count,$correct,$data_count-$correct).
1489: '</font></td></tr>'.$/;
1490: my $concept_correct_plot = '';
1491: if ($num_concepts > 1) {
1492: $concept_correct_plot =
1493: &OR_Concept_Time_Analysis($processed_time_data,
1494: $correct,$data_count,$student_count,
1495: $ORdata,$Concepts);
1496: }
1497: my ($foil_correct_plot,$foil_incorrect_plot) =
1498: &OR_Foil_Time_Analysis($processed_time_data,
1499: $correct,$data_count,$student_count,
1500: $ORdata,$Foils,$Concepts);
1501: $table .= '<tr>'.
1502: '<td>'.$concept_correct_plot.'</td>'.
1503: '<td>'.$foil_correct_plot.'</td>'.
1504: '<td>'.$foil_incorrect_plot.'</td>'.
1505: '<td align="left" valign="top">'.$foilkey.'</td></tr>'.$/;
1506: $table .= '<tr><td colspan="4" align="center">'.
1507: &mt('Start time: [_1]',$startdateform).'<br />'.
1508: &mt('End time: [_1]',$enddateform).'</td></tr>'.$/;
1509: $table.= '<tr><td colspan="4"> </td></tr>'.$/;
1510: }
1511: $table .= '</table>';
1512: #
1513: return $table;
1514: }
1515:
1516: sub OR_Foil_Time_Analysis {
1517: my ($processed_time_data,$correct,$data_count,$student_count,
1518: $ORdata,$Foils,$Concepts) = @_;
1519: if ($data_count <= 0) {
1520: return ('<h2>'.&mt('There is no data to plot').'</h2>','');
1521: }
1522: my $analysis_html;
1523: my @plotdata;
1524: my @labels;
1525: foreach my $concept (@{$Concepts}) {
1526: foreach my $foil (@{$concept->{'foils'}}) {
1527: push(@labels,scalar(@labels)+1);
1528: my $total = $processed_time_data->{$foil}->{'_total'};
1529: if ($total == 0) {
1530: push(@{$plotdata[0]},0);
1531: } else {
1532: push(@{$plotdata[0]},
1533: 100 * $processed_time_data->{$foil}->{'_correct'} / $total);
1534: }
1535: my $total_incorrect = $total - $processed_time_data->{$foil}->{'_correct'};
1536: for (my $i=0;$i<scalar(@{$ORdata->{'_Options'}});$i++) {
1537: my $option = $ORdata->{'_Options'}->[$i];
1538: if ($total_incorrect == 0) {
1539: push(@{$plotdata[$i+1]},0);
1540: } else {
1541: push(@{$plotdata[$i+1]},
1542: 100 * $processed_time_data->{$foil}->{$option} / $total_incorrect);
1543: }
1544: }
1545: }
1546: # Put in a blank one
1547: push(@labels,'');
1548: push(@{$plotdata[0]},0);
1549: for (my $i=0;$i<scalar(@{$ORdata->{'_Options'}});$i++) {
1550: push(@{$plotdata[$i+1]},0);
1551: }
1552: }
1553: #
1554: # Create the plot
1555: my $correct_plot = &Apache::loncommon::DrawBarGraph('Correct Statements',
1556: 'Statement Number',
1557: 'Percent Correct',
1558: 100,
1559: $plotcolors,
1560: undef,
1561: $plotdata[0],
1562: {xskip=>1});
1563: for (my $j=0; $j< scalar(@{$plotdata[0]});$j++) {
1564: $plotdata[0]->[$j]=0;
1565: }
1566: my $incorrect_plot =
1567: &Apache::loncommon::DrawBarGraph('Incorrect Statements',
1568: 'Statement Number',
1569: 'Incorrect Option Choice',
1570: 100,
1571: $plotcolors,
1572: undef,
1573: @plotdata,{xskip=>1});
1574: return ($correct_plot,$incorrect_plot);
1575: }
1576:
1577: sub OR_Concept_Time_Analysis {
1578: my ($processed_time_data,$correct,$data_count,$student_count,
1579: $ORdata,$Concepts) = @_;
1580: return '' if ($data_count == 0);
1581: #
1582: # Put the data in plottable form
1583: my @plotdata;
1584: foreach my $concept (@$Concepts) {
1585: my ($total,$correct);
1586: foreach my $foil (@{$concept->{'foils'}}) {
1587: $total += $processed_time_data->{$foil}->{'_total'};
1588: $correct += $processed_time_data->{$foil}->{'_correct'};
1589: }
1590: if ($total == 0) {
1591: push(@plotdata,0);
1592: } else {
1593: push(@plotdata,100 * $correct / $total);
1594: }
1595: }
1596: #
1597: # Create the plot
1598: return &Apache::loncommon::DrawBarGraph('Correct Concepts',
1599: 'Concept Number',
1600: 'Percent Correct',
1601: 100,
1602: $plotcolors,
1603: undef,
1604: \@plotdata,{xskip=>1});
1605: }
1606:
1607: sub OR_time_process_data {
1608: my ($performance_data,$begin_index,$end_index)=@_;
1609: my %processed_time_data;
1610: my %distinct_students;
1611: my ($correct,$data_count);
1612: if (($begin_index == $end_index) &&
1613: ($end_index != scalar(@$performance_data)-1)) {
1614: return undef;
1615: }
1616: # Be sure we include the last one if we are asked for it.
1617: # That we have to correct here (and not when $end_index is
1618: # given a value) should probably be considered a bug.
1619: if ($end_index == scalar(@$performance_data)-1) {
1620: $end_index++;
1621: }
1622: my $count;
1623: for (my $i=$begin_index;$i<$end_index;$i++) {
1624: my $attempt = $performance_data->[$i];
1625: $count++;
1626: next if (! defined($attempt));
1627: my %attempt = &Process_OR_Row($attempt);
1628: $data_count++;
1629: $correct += $attempt{'_correct'};
1630: $distinct_students{$attempt->[&Apache::loncoursedata::RD_student_id()]}++;
1631: while (my ($foilid,$href) = each(%attempt)) {
1632: if (! ref($href)) {
1633: $processed_time_data{$foilid} += $href;
1634: next;
1635: }
1636: while (my ($option,$value) = each(%$href)) {
1637: $processed_time_data{$foilid}->{$option}+=$value;
1638: }
1639: }
1640: }
1641: return (\%processed_time_data,$correct,$data_count,
1642: scalar(keys(%distinct_students)));
1643: }
1644:
1645: sub build_foil_index {
1646: my ($ORdata) = @_;
1647: return if (! exists($ORdata->{'_Foils'}));
1648: my %Foildata = %{$ORdata->{'_Foils'}};
1649: my @Foils = sort(keys(%Foildata));
1650: my %Concepts;
1651: foreach my $foilid (@Foils) {
1652: push(@{$Concepts{$Foildata{$foilid}->{'_Concept'}}},
1653: $foilid);
1654: }
1655: undef(@Foils);
1656: # Having gathered the concept information in a hash, we now translate it
1657: # into an array because we need to be consistent about order.
1658: # Also put the foils in order, too.
1659: my $sortfunction = sub {
1660: my %Numbers = (one => 1,
1661: two => 2,
1662: three => 3,
1663: four => 4,
1664: five => 5,
1665: six => 6,
1666: seven => 7,
1667: eight => 8,
1668: nine => 9,
1669: ten => 10,);
1670: my $a1 = lc($a);
1671: my $b1 = lc($b);
1672: if (exists($Numbers{$a1})) {
1673: $a1 = $Numbers{$a1};
1674: }
1675: if (exists($Numbers{$b1})) {
1676: $b1 = $Numbers{$b1};
1677: }
1678: if (($a1 =~/^\d+$/) && ($b1 =~/^\d+$/)) {
1679: return $a1 <=> $b1;
1680: } else {
1681: return $a1 cmp $b1;
1682: }
1683: };
1684: my @Concepts;
1685: foreach my $concept (sort $sortfunction (keys(%Concepts))) {
1686: if (! defined($Concepts{$concept})) {
1687: $Concepts{$concept}=[];
1688: # next;
1689: }
1690: push(@Concepts,{ name => $concept,
1691: foils => [@{$Concepts{$concept}}]});
1692: push(@Foils,(@{$Concepts{$concept}}));
1693: }
1694: #
1695: # Build up the table of row labels.
1696: my $table = '<table border="1" >'."\n";
1697: if (@Concepts > 1) {
1698: $table .= '<tr>'.
1699: '<th>'.&mt('Concept Number').'</th>'.
1700: '<th>'.&mt('Concept').'</th>'.
1701: '<th>'.&mt('Foil Number').'</th>'.
1702: '<th>'.&mt('Foil Name').'</th>'.
1703: '<th>'.&mt('Foil Text').'</th>'.
1704: '<th>'.&mt('Correct Value').'</th>'.
1705: "</tr>\n";
1706: } else {
1707: $table .= '<tr>'.
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: }
1714: my $conceptindex = 1;
1715: my $foilindex = 1;
1716: foreach my $concept (@Concepts) {
1717: my @FoilsInConcept = @{$concept->{'foils'}};
1718: my $firstfoil = shift(@FoilsInConcept);
1719: if (@Concepts > 1) {
1720: $table .= '<tr>'.
1721: '<td>'.$conceptindex.'</td>'.
1722: '<td>'.&HTML::Entities::encode($concept->{'name'},'<>&"').'</td>'.
1723: '<td>'.$foilindex++.'</td>'.
1724: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'name'},'<>&"').'</td>'.
1725: '<td>'.$Foildata{$firstfoil}->{'text'}.'</td>'.
1726: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'value'},'<>&"').'</td>'.
1727: "</tr>\n";
1728: } else {
1729: $table .= '<tr>'.
1730: '<td>'.$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: }
1736: foreach my $foilid (@FoilsInConcept) {
1737: if (@Concepts > 1) {
1738: $table .= '<tr>'.
1739: '<td></td>'.
1740: '<td></td>'.
1741: '<td>'.$foilindex.'</td>'.
1742: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'name'},'<>&"').'</td>'.
1743: '<td>'.$Foildata{$foilid}->{'text'}.'</td>'.
1744: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'value'},'<>&"').'</td>'.
1745: "</tr>\n";
1746: } else {
1747: $table .= '<tr>'.
1748: '<td>'.$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: }
1754: } continue {
1755: $foilindex++;
1756: }
1757: } continue {
1758: $conceptindex++;
1759: }
1760: $table .= "</table>\n";
1761: #
1762: # Build option index with color stuff
1763: return ($table,\@Foils,\@Concepts);
1764: }
1765:
1766: sub build_option_index {
1767: my ($ORdata)= @_;
1768: my $table = "<table>\n";
1769: my $optionindex = 0;
1770: my @Rows;
1771: foreach my $option (&mt('correct option chosen'),@{$ORdata->{'_Options'}}) {
1772: my $color = $plotcolors->[$optionindex++];
1773: push (@Rows,
1774: '<tr>'.
1775: '<td bgcolor="'.$color.'">'.
1776: '<font color="'.$color.'">'.('*'x3).'</font>'.'</td>'.
1777: '<td>'.&HTML::Entities::encode($option,'<>&"').'</td>'.
1778: "</tr>\n");
1779: }
1780: shift(@Rows); # Throw away 'correct option chosen' color
1781: $table .= join('',reverse(@Rows));
1782: $table .= "</table>\n";
1783: }
1784:
1785: sub build_foil_key {
1786: my ($foils,$extra_data)= @_;
1787: if (! defined($extra_data)) { $extra_data = {}; }
1788: my $table = "<table>\n";
1789: my $foil_index = 0;
1790: my @rows;
1791: foreach my $foil (&mt('correct foil chosen'),@{$foils}) {
1792: my $color = $plotcolors->[$foil_index++];
1793: push (@rows,
1794: '<tr>'.
1795: '<td bgcolor="'.$color.'" class="key">'.
1796: '<font color="'.$color.'">'.('*'x4).'</font></td>'.
1797: '<td>'.&HTML::Entities::encode($foil,'<>&"').
1798: (' 'x2).$extra_data->{$foil}.'</td>'.
1799: "</tr>\n");
1800: }
1801: shift(@rows); # Throw away 'correct foil chosen' color
1802: $table .= join('',reverse(@rows));
1803: $table .= "</table>\n";
1804: }
1805:
1806: #########################################################
1807: #########################################################
1808: ##
1809: ## Generic Interface Routines
1810: ##
1811: #########################################################
1812: #########################################################
1813: sub CreateInterface {
1814: ##
1815: ## Environment variable initialization
1816: if (! exists($env{'form.AnalyzeOver'})) {
1817: $env{'form.AnalyzeOver'} = 'tries';
1818: }
1819: ##
1820: ## Build the menu
1821: my $Str = '';
1822: $Str .= &Apache::lonhtmlcommon::breadcrumbs
1823: (undef,'Detailed Problem Analysis');
1824: $Str .= '<table cellspacing="5">'."\n";
1825: $Str .= '<tr>';
1826: $Str .= '<td align="center"><b>'.&mt('Sections').'</b></td>';
1827: $Str .= '<td align="center"><b>'.&mt('Enrollment Status').'</b></td>';
1828: $Str .= '<td align="center"> </td>';
1829: $Str .= '</tr>'."\n";
1830: ##
1831: ##
1832: $Str .= '<tr><td align="center">'."\n";
1833: $Str .= &Apache::lonstatistics::SectionSelect('Section','multiple',5);
1834: $Str .= '</td>';
1835: #
1836: $Str .= '<td align="center">';
1837: $Str .= &Apache::lonhtmlcommon::StatusOptions(undef,undef,5);
1838: $Str .= '</td>';
1839: #
1840: ##
1841: ##
1842: $Str .= '<td>';
1843: ##
1844: my $showprob_checkbox =
1845: '<input type="checkbox" name="show_prob" value="true" ';
1846: if ($env{'form.show_prob'} eq 'true') {
1847: $showprob_checkbox .= 'checked ';
1848: }
1849: $showprob_checkbox.= ' />';
1850: $Str.= '<nobr><label>'.
1851: &mt('Show problem [_1]',$showprob_checkbox).
1852: '</label></nobr><br />';
1853: ##
1854: my $analyze_selector = '<select name="AnalyzeOver" >';
1855: $analyze_selector .= '<option value="tries" ';
1856: if (! exists($env{'form.AnalyzeOver'}) ||
1857: $env{'form.AnalyzeOver'} eq 'tries'){
1858: # Default to tries
1859: $analyze_selector .= ' selected ';
1860: }
1861: $analyze_selector .= '>'.&mt('Tries').'</option>';
1862: $analyze_selector .= '<option value="time" ';
1863: $analyze_selector .= ' selected ' if ($env{'form.AnalyzeOver'} eq 'time');
1864: $analyze_selector .= '>'.&mt('Time').'</option>';
1865: $analyze_selector .= '</select>';
1866: $Str .= '<nobr><label>'.
1867: &mt('Analyze Over [_1] [_2]',
1868: $analyze_selector,
1869: &Apache::loncommon::help_open_topic('Analysis_Analyze_Over')).
1870: '</label></nobr><br />'.$/;
1871: ##
1872: my $numplots_selector = '<select name="NumPlots">';
1873: if (! exists($env{'form.NumPlots'})
1874: || $env{'form.NumPlots'} < 1
1875: || $env{'form.NumPlots'} > 20) {
1876: $env{'form.NumPlots'} = 5;
1877: }
1878: foreach my $i (1,2,3,4,5,6,7,8,10,15,20) {
1879: $numplots_selector .= '<option value="'.$i.'" ';
1880: if ($env{'form.NumPlots'} == $i) { $numplots_selector.=' selected '; }
1881: $numplots_selector .= '>'.$i.'</option>';
1882: }
1883: $numplots_selector .= '</select></nobr><br />';
1884: $Str .= '<nobr><label>'.&mt('Number of Plots [_1]',$numplots_selector).
1885: '</label></nobr>';
1886: ##
1887: $Str .= '<nobr><label>'.&mt('Status: [_1]',
1888: '<input type="text" '.
1889: 'name="stats_status" size="60" value="" />'
1890: ).
1891: '</label></nobr>';
1892: $Str .= '</td>';
1893: ##
1894: ##
1895: $Str .= '</tr>'."\n";
1896: $Str .= '</table>'."\n";
1897: return $Str;
1898: }
1899:
1900: #########################################################
1901: #########################################################
1902: ##
1903: ## Misc Option Response functions
1904: ##
1905: #########################################################
1906: #########################################################
1907: sub get_time_from_row {
1908: my ($row) = @_;
1909: if (ref($row)) {
1910: return $row->[&Apache::loncoursedata::RD_timestamp()];
1911: }
1912: return undef;
1913: }
1914:
1915: sub get_tries_from_row {
1916: my ($row) = @_;
1917: if (ref($row)) {
1918: return $row->[&Apache::loncoursedata::RD_tries()];
1919: }
1920: return undef;
1921: }
1922:
1923: sub hashify_attempt {
1924: my ($row) = @_;
1925: my %attempt;
1926: $attempt{'student'} = $row->[&Apache::loncoursedata::RD_sname()];
1927: $attempt{'tries'} = $row->[&Apache::loncoursedata::RD_tries()];
1928: $attempt{'submission'} = &Apache::lonnet::unescape($row->[&Apache::loncoursedata::RD_submission()]);
1929: $attempt{'award'} = $row->[&Apache::loncoursedata::RD_awarddetail()];
1930: $attempt{'timestamp'} = $row->[&Apache::loncoursedata::RD_timestamp()];
1931: return %attempt;
1932: }
1933:
1934: sub Process_OR_Row {
1935: my ($row) = @_;
1936: my %RowData;
1937: # my $student_id = $row->[&Apache::loncoursedata::RD_student_id()];
1938: my $award = $row->[&Apache::loncoursedata::RD_awarddetail()];
1939: my $grading = $row->[&Apache::loncoursedata::RD_response_eval()];
1940: my $submission = $row->[&Apache::loncoursedata::RD_submission()];
1941: my $time = $row->[&Apache::loncoursedata::RD_timestamp()];
1942: # my $tries = $row->[&Apache::loncoursedata::RD_tries()];
1943: return undef if ($award eq 'MISSING_ANSWER');
1944: if (&submission_is_correct($award)) {
1945: $RowData{'_correct'} = 1;
1946: }
1947: $RowData{'_total'} = 1;
1948: my @Foilgrades = split('&',$grading);
1949: my @Foilsubs = split('&',$submission);
1950: for (my $j=0;$j<=$#Foilgrades;$j++) {
1951: my ($foilid,$correct) = split('=',$Foilgrades[$j]);
1952: $foilid = &Apache::lonnet::unescape($foilid);
1953: my (undef,$submission) = split('=',$Foilsubs[$j]);
1954: if ($correct) {
1955: $RowData{$foilid}->{'_correct'}++;
1956: } else {
1957: $submission = &Apache::lonnet::unescape($submission);
1958: $RowData{$foilid}->{$submission}++;
1959: }
1960: $RowData{$foilid}->{'_total'}++;
1961: }
1962: return %RowData;
1963: }
1964:
1965: sub submission_is_correct {
1966: my ($award) = @_;
1967: if ($award =~ /(APPROX_ANS|EXACT_ANS)/) {
1968: return 1;
1969: } else {
1970: return 0;
1971: }
1972: }
1973:
1974: 1;
1975:
1976: __END__
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