1: # The LearningOnline Network with CAPA
2: #
3: # $Id: lonproblemanalysis.pm,v 1.119 2005/03/15 00:51:43 matthew 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: $r->print('<input type="submit" name="ProblemAnalysis" value="'.
163: &mt('Analyze Problem').'" />');
164: $r->print(' 'x5);
165: $r->print('<h3>'.&mt('Please select a problem to analyze').'</h3>');
166: $r->print(&Apache::lonstathelpers::problem_selector($problem_types));
167: }
168: }
169:
170: #########################################################
171: #########################################################
172: ##
173: ## Numerical Response Routines
174: ##
175: #########################################################
176: #########################################################
177: sub numerical_response_analysis {
178: my ($r,$problem,$problem_analysis,$students) = @_;
179: my $c = $r->connection();
180: #
181: if ($ENV{'form.AnalyzeOver'} !~ /^(tries|time)$/) {
182: $r->print('Bad request');
183: }
184: #
185: my ($resource,$partid,$respid) = ($problem->{'resource'},
186: $problem->{'part'},
187: $problem->{'respid'});
188: # Gather student data
189: my $response_data = &Apache::loncoursedata::get_response_data
190: ([&Apache::lonstatistics::get_selected_sections()],
191: $Apache::lonstatistics::enrollment_status,
192: $resource->symb,$respid);
193: #
194: $problem_analysis->{'answercomputed'} = 1;
195: if ($problem_analysis->{'answercomputed'}) {
196: my $answers =
197: &Apache::lonstathelpers::GetStudentAnswers($r,$problem,$students,
198: 'Statistics',
199: 'stats_status');
200: $r->print(&numerical_one_dimensional_plot($r,600,150,$answers));
201: }
202: #
203: if (ref($response_data) ne 'ARRAY') {
204: $r->print('<h2>'.
205: &mt('There is no submission data for this resource').
206: '</h2>');
207: return;
208: }
209: my $analysis_html = '<table>';
210: for (my $plot_num = 1;$plot_num<=$ENV{'form.NumPlots'};$plot_num++) {
211: my $restriction_function;
212: my $header_message;
213: my $stats_message;
214: my $post_message; # passed through &mt sooner rather than later
215: my $no_data_message;
216: my @extra_data;
217: if ($ENV{'form.AnalyzeOver'} eq 'tries') {
218: $restriction_function = sub {($_[0]->{'tries'} == $plot_num?1:0)};
219: $header_message = 'Attempt [_1]';
220: $stats_message =
221: '[_1] submissions, [_2] correct, [_3] incorrect';
222: $post_message = '';
223: $no_data_message = 'No data exists for attempt [_1]';
224: } else {
225: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
226: ('startdate_'.$plot_num);
227: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
228: ('enddate_'.$plot_num);
229: ($starttime,$endtime) = &ensure_start_end_times
230: ($starttime,$endtime,
231: &get_time_from_row($response_data->[0]),
232: &get_time_from_row($response_data->[-1]),
233: $plot_num);
234: $header_message = 'Data from [_2] to [_3]';
235: $extra_data[0] = &Apache::lonlocal::locallocaltime($starttime);
236: $extra_data[1] = &Apache::lonlocal::locallocaltime($endtime);
237: #
238: $stats_message =
239: '[_1] submissions from [_4] students, [_2] correct, [_3] incorrect';
240: #
241: $post_message =
242: &mt('Start time: [_1]',
243: &Apache::lonhtmlcommon::date_setter
244: ('Statistics','startdate_'.$plot_num,$starttime)).
245: '<br />'.
246: &mt('End time: [_1]',
247: &Apache::lonhtmlcommon::date_setter
248: ('Statistics','enddate_'.$plot_num,$endtime));
249: $restriction_function =
250: sub {
251: my $t = $_[0]->{'timestamp'};
252: if ($t >= $starttime && $t < $endtime) {
253: return 1;
254: } else {
255: return 0;
256: }
257: };
258: $no_data_message = 'No data for [_2] to [_3]';
259: }
260: #
261: my ($correct,$answers) =
262: &numerical_determine_answers($r,$resource,$partid,
263: $respid,$students);
264: if ($c->aborted()) { return; };
265: #
266: my ($responses,$stats) =
267: &numerical_classify_responses($response_data,$correct,
268: $restriction_function);
269: if ($stats->{'submission_count'} == 0) {
270: $analysis_html.=
271: '<tr><td colspan="2"><font size="+1"><b>'.
272: &mt($no_data_message,$plot_num,@extra_data).
273: '</b></font></td></tr>';
274: } else {
275: $analysis_html.=
276: '<tr><td colspan="2" align="center"><font size="+1"><b>'.
277: &mt($header_message,$plot_num,@extra_data).
278: '</b></font></td></tr>'.
279: '<tr><td colspan="2" align="center">'.
280: &mt($stats_message,
281: $stats->{'submission_count'},
282: $stats->{'correct_count'},
283: $stats->{'incorrect_count'},
284: $stats->{'students'},
285: @extra_data).
286: '</td></tr>'.
287: '<tr>'.'<td valign="top" align="center">'.
288: &numerical_plot_percent($r,$responses,$stats).'</td>'.
289: '<td align="center" valign="top">'.
290: &numerical_plot_differences($r,$responses,$stats).'</td>'.
291: '</tr>';
292: }
293: if ($post_message ne '') {
294: $analysis_html .=
295: '<tr><td colspan="2">'.$post_message.'</td></tr>';
296: }
297: }
298: $analysis_html.='</table>';
299: $r->print($analysis_html);
300: #
301: return;
302: }
303:
304: sub numerical_plot_percent {
305: my ($r,$responses,$stats) = @_;
306: #
307: my $total = $stats->{'submission_count'};
308: return '' if ($total == 0);
309: my $max_bins = 50;
310: my $lowest_percent = $stats->{'min_percent'};
311: my $highest_percent = $stats->{'max_percent'};
312: my $percent_spread = $highest_percent - $lowest_percent;
313: foreach (qw/20 30 40 50 100 200/) {
314: if ($percent_spread < $_) {
315: $highest_percent =$_/2;
316: last;
317: }
318: }
319: my $bin_size = 1;
320: foreach (qw/0.01 0.05 0.1 0.5 1 2 5 10 20 25 50 100/) {
321: if ($lowest_percent/2 < $_){
322: $bin_size = $_;
323: last;
324: }
325: }
326: my @bins;
327: for (my $bin = -$highest_percent;$bin<0;$bin+=$bin_size) {
328: push (@bins,$bin);
329: }
330: for (my $bin = 0; $bin<$highest_percent;$bin+=$bin_size) {
331: push (@bins,$bin);
332: }
333: push(@bins,$highest_percent);
334: #
335: my @correct;
336: my @incorrect;
337: my @count;
338: while (my ($ans,$submissions) = each(%$responses)) {
339: while (my ($submission,$counts) = each(%$submissions)) {
340: my ($correct_count,$incorrect_count) = @$counts;
341: my $scaled_value = 100*($submission-$ans)/abs($ans);
342: if ($scaled_value < $bins[0]) {
343: $bins[0]=$scaled_value -1;
344: }
345: my $bin;
346: for ($bin=0;$bin<$#bins;$bin++) {
347: last if ($bins[$bin]>$scaled_value);
348: }
349: $correct[$bin-1]+=$correct_count;
350: $incorrect[$bin-1]+=$incorrect_count;
351: $count[$bin-1]+=$correct_count+$incorrect_count;
352: }
353: }
354: #
355: my @plot_correct = @correct;
356: my @plot_incorrect = @incorrect;
357: my $max;
358: for (my $i=0;$i<$#bins;$i++) {
359: $plot_correct[$i] *= 100/$total;
360: $plot_incorrect[$i] *= 100/$total;
361: if (! defined($max) ||
362: $max < $plot_correct[$i]+$plot_incorrect[$i] ) {
363: $max = $plot_correct[$i]+$plot_incorrect[$i];
364: }
365: }
366: foreach (qw/1 5 10 15 20 25 30 40 50 75 100/) {
367: if ($max <$_) { $max = $_; last; }
368: }
369: #
370: my $title = &mt('Percent Difference');
371: my @labels = (1..scalar(@bins)-1);
372: my $graph = &Apache::loncommon::DrawBarGraph
373: ($title,'Percent Difference from Correct','Percent of Answers',
374: $max,['#33FF00','#FF3300'],\@labels,\@plot_correct,\@plot_incorrect,
375: {xskip=>1});
376: #
377: my $table = $graph.$/.
378: &numerical_bin_table(\@bins,\@labels,\@incorrect,\@correct,\@count).$/;
379: return $table;
380: }
381:
382: sub numerical_plot_differences {
383: my ($r,$responses,$stats) = @_;
384: #
385: my $total = $stats->{'submission_count'};
386: return '' if ($total == 0);
387: my $max_bins = 21;
388: my $min_bin_size = $stats->{'min_abs'};
389: my $low_bin = $stats->{'lowest_ans'}-$stats->{'max_bin_size'};
390: my $high_bin = $stats->{'highest_ans'}+$stats->{'max_bin_size'};
391: if ($high_bin > 0 && $low_bin > -$high_bin) {
392: $low_bin = -$high_bin;
393: } elsif ($low_bin < 0 && $high_bin < -$low_bin) {
394: $high_bin = -$low_bin;
395: }
396: if (($high_bin -$low_bin)/$min_bin_size * 2 > $max_bins) {
397: $min_bin_size = abs($high_bin - $low_bin) / $max_bins * 2;
398: }
399: my @bins;
400: for (my $num = $low_bin;$num <= $high_bin;$num+=($min_bin_size/2)) {
401: push(@bins,$num);
402: }
403: #
404: my @correct;
405: my @incorrect;
406: my @count;
407: while (my ($ans,$submissions) = each(%$responses)) {
408: while (my ($submission,$counts) = each(%$submissions)) {
409: my ($correct_count,$incorrect_count) = @$counts;
410: my $scaled_value = $submission-$ans;
411: if ($scaled_value < $bins[0]) {
412: $bins[0]=$scaled_value-1;
413: }
414: my $bin=0;
415: for ($bin=0;$bin<$#bins;$bin++) {
416: last if ($bins[$bin]>$scaled_value);
417: }
418: $correct[$bin-1]+=$correct_count;
419: $incorrect[$bin-1]+=$incorrect_count;
420: $count[$bin-1]+=$correct_count+$incorrect_count;
421: }
422: }
423: my @plot_correct = @correct;
424: my @plot_incorrect = @incorrect;
425: my $max;
426: for (my $i=0;$i<=$#bins;$i++) {
427: $plot_correct[$i] *= 100/$total;
428: $plot_incorrect[$i] *= 100/$total;
429: if (! defined($max) ||
430: $max < $plot_correct[$i]+$plot_incorrect[$i] ) {
431: $max = $plot_correct[$i]+$plot_incorrect[$i];
432: }
433: }
434: foreach (qw/1 5 10 15 20 25 30 40 50 75 100/) {
435: if ($max <$_) { $max = $_; last; }
436: }
437: #
438: my $title = &mt('Difference between submission and correct');
439: my @labels = (1..scalar(@bins)-1);
440: my $graph = &Apache::loncommon::DrawBarGraph
441: ($title,'Difference from Correct','Percent of Answers',
442: $max,['#33FF00','#FF3300'],\@labels,\@plot_correct,\@plot_incorrect,
443: {xskip=>1});
444: #
445: my $table = $graph.$/.
446: &numerical_bin_table(\@bins,\@labels,\@incorrect,\@correct,\@count).$/;
447: return $table;
448: }
449:
450: sub numerical_classify_responses {
451: my ($full_row_data,$correct,$function) = @_;
452: my %submission_data;
453: my %students;
454: my %stats;
455: my $max=0;
456: foreach my $row (@$full_row_data) {
457: my %subm = &hashify_attempt($row);
458: if (ref($correct) eq 'HASH') {
459: my $s_correct = $correct->{$subm{'student'}};
460: $subm{'correct'} = $s_correct->{'answer'};
461: foreach my $item ('unit','ans_low','ans_high') {
462: $subm{$item} = $s_correct->{$item};
463: }
464: } else { # This probably never happens....
465: $subm{'correct'} = $correct->{'answer'};
466: $subm{'unit'} = $correct->{'unit'};
467: }
468: #
469: my $abs_low =abs($subm{'correct'}-$subm{'ans_low'});
470: my $abs_high=abs($subm{'correct'}-$subm{'ans_high'});
471: if (! defined($stats{'min_abs'}) ||
472: $stats{'min_abs'} > $abs_low) {
473: $stats{'min_abs'} = $abs_low;
474: }
475: if ($stats{'min_abs'} > $abs_high) {
476: $stats{'min_abs'} = $abs_high;
477: }
478: if (! defined($stats{'max_abs'}) ||
479: $stats{'max_abs'} < $abs_low) {
480: $stats{'max_abs'} = $abs_low;
481: }
482: if ($stats{'max_abs'} < $abs_high) {
483: $stats{'max_abs'} = $abs_high;
484: }
485: my $low_percent;
486: my $high_percent;
487: if (defined($subm{'correct'}) && $subm{'correct'} != 0) {
488: $low_percent = 100 * abs($abs_low / $subm{'correct'});
489: $high_percent = 100 * abs($abs_high / $subm{'correct'});
490: }
491: if (! defined($stats{'min_percent'}) ||
492: $stats{'min_percent'} > $low_percent) {
493: $stats{'min_percent'} = $low_percent;
494: }
495: if ($stats{'min_percent'} > $high_percent) {
496: $stats{'min_percent'} = $high_percent;
497: }
498: if (! defined($stats{'max_percent'}) ||
499: $stats{'max_percent'} < $low_percent) {
500: $stats{'max_percent'} = $low_percent;
501: }
502: if ($stats{'max_percent'} < $high_percent) {
503: $stats{'max_percent'} = $high_percent;
504: }
505: if (! defined($stats{'lowest_ans'}) ||
506: $stats{'lowest_ans'} > $subm{'correct'}) {
507: $stats{'lowest_ans'} = $subm{'correct'};
508: }
509: if (! defined($stats{'highest_ans'}) ||
510: $stats{'highest_ans'} < $subm{'correct'}) {
511: $stats{'highest_ans'} = $subm{'correct'};
512: }
513: #
514: $subm{'submission'} =~ s/=\d+\s*$//;
515: if (&$function(\%subm)) {
516: my $scaled = '1';
517: my ($sname,$sdom) = split(':',$subm{'student'});
518: my ($myunit,$mysub) = ($subm{'unit'},$subm{'submission'});
519: my $result =
520: &capa::caparesponse_get_real_response($myunit,
521: $mysub,
522: \$scaled);
523: # &Apache::lonnet::logthis('scaled = '.$scaled.' result ='.$result);
524: next if (! defined($scaled));
525: # next if ($result ne '6');
526: my $submission = $scaled;
527: $students{$subm{'student'}}++;
528: $stats{'submission_count'}++;
529: if (&numerical_submission_is_correct($subm{'award'})) {
530: $stats{'correct_count'}++;
531: $submission_data{$subm{'correct'}}->{$submission}->[0]++;
532: } elsif (&numerical_submission_is_incorrect($subm{'award'})) {
533: $stats{'incorrect_count'}++;
534: $submission_data{$subm{'correct'}}->{$submission}->[1]++;
535: }
536: }
537: }
538: $stats{'correct_count'} |= 0;
539: $stats{'incorrect_count'} |= 0;
540: $stats{'students'}=scalar(keys(%students));
541: return (\%submission_data,\%stats);
542: }
543:
544: sub numerical_submission_is_correct {
545: my ($award) = @_;
546: if ($award =~ /^(APPROX_ANS|EXACT_ANS)$/) {
547: return 1;
548: } else {
549: return 0;
550: }
551: }
552:
553: sub numerical_submission_is_incorrect {
554: my ($award) = @_;
555: if ($award =~ /^(INCORRECT)$/) {
556: return 1;
557: } else {
558: return 0;
559: }
560: }
561:
562: sub numerical_bin_table {
563: my ($bins,$labels,$incorrect,$correct,$count)=@_;
564: my $table =
565: '<table><tr><th>'.&mt('Bar').'</th>'.
566: '<th colspan="3">'.&mt('Range').'</th>'.
567: '<th>'.&mt('Incorrect').'</th>'.
568: '<th>'.&mt('Correct').'</th>'.
569: '<th>'.&mt('Count').'</th>'.
570: '</tr>'.$/;
571: for (my $i=0;$i<scalar(@{$bins}-1);$i++) {
572: my $lownum = $bins->[$i];
573: if ($i == 0) { $lownum = '-∞'; }
574: my $highnum = $bins->[$i+1];
575: if ($i == scalar(@{$bins})-2) { $highnum = '∞'; }
576: $table .=
577: '<tr>'.
578: '<td>'.$labels->[$i].'</td>'.
579: '<td align="right">'.$lownum.'</td>'.
580: '<td> - </td>'.
581: '<td align="right">'.$highnum.'</td>'.
582: '<td align="right">'.$incorrect->[$i].'</td>'.
583: '<td align="right">'.$correct->[$i].'</td>'.
584: '<td align="right">'.$count->[$i].'</td>'.
585: '</tr>'.$/;
586: }
587: $table.= '</table>';
588: return $table;
589: }
590:
591: sub numerical_determine_answers {
592: my ($r,$resource,$partid,$respid,$students)=@_;
593: my $c = $r->connection();
594: #
595: my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin
596: ($r,'Student Answer Compilation Status',
597: 'Student Answer Compilation Progress', scalar(@$students),
598: 'inline',undef,'Statistics','stats_status');
599: #
600: # Read in the cache (if it exists) before we start timing things.
601: &Apache::lonstathelpers::ensure_proper_cache($resource->{'symb'});
602: #
603: my $correct;
604: my %answers;
605: foreach my $student (@$students) {
606: last if ($c->aborted());
607: my $sname = $student->{'username'};
608: my $sdom = $student->{'domain'};
609: # analyze problem
610: my $analysis =
611: &Apache::lonstathelpers::analyze_problem_as_student($resource,
612: $sname,
613: $sdom);
614: # make the key
615: my $key = $partid.'.'.$respid;
616: foreach my $item ('answer','unit','ans_high','ans_low') {
617: $correct->{$sname.':'.$sdom}->{$item} =
618: $analysis->{$key.'.'.$item}->[0];
619: }
620: $answers{$analysis->{$key.'.answer'}->[0]}++;
621: &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
622: &mt('last student'));
623: }
624: &Apache::lonstathelpers::write_analysis_cache();
625: &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
626: return ($correct,\%answers);
627: }
628:
629: #
630: # Inputs: $r, $width, $height, $data
631: # $n = number of students
632: # $data = hashref of $answer => $frequency pairs
633: sub numerical_one_dimensional_plot {
634: my ($r,$width,$height,$data)=@_;
635: #
636: # Compute data -> image scaling factors
637: my $max_y = 0;
638: my $min_x = undef;
639: my $max_x = undef;
640: my $n = 0;
641: while (my ($answer,$count) = each(%$data)) {
642: $n+=$count;
643: $max_y = $count if ($max_y < $count);
644: if (! defined($min_x) || $answer < $min_x) {
645: $min_x = $answer;
646: }
647: if (! defined($max_x) || $answer > $max_x) {
648: $max_x = $answer;
649: }
650: }
651: #
652: my $min_max_difference = $max_x - $min_x;
653: if (! defined($min_max_difference) || $min_max_difference == 0) {
654: $min_max_difference = 1;
655: }
656: my $h_scale = ($width-10)/$min_max_difference;
657: #
658: my $ticscale = 5;
659: if ($max_y * $ticscale > $height/2) {
660: $ticscale = int($height/2/$max_y);
661: $ticscale = 1 if ($ticscale < 1);
662: }
663: #
664: # Create the plot
665: my $plot =
666: qq{<drawimage width="$width" height="$height" bgcolor="transparent" >};
667: while (my ($answer,$count) = each(%$data)) {
668: my $xloc = 5+$h_scale*($answer - $min_x);
669: my $top = $height/2-$count*$ticscale;
670: my $bottom = $height/2+$count*$ticscale;
671: $plot .= &line($xloc,$top,$xloc,$bottom,'888888',1);
672: }
673: #
674: # Put the scale on last to ensure it is on top of the data.
675: if ($min_x < 0 && $max_x > 0) {
676: my $circle_x = 5+$h_scale*abs($min_x); # '0' in data coordinates
677: my $r = 4;
678: $plot .= &line(5,$height/2,$circle_x-$r,$height/2,'000000',1);
679: $plot .= &circle($circle_x,$height/2,$r+1,'000000');
680: $plot .= &line($circle_x+$r,$height/2,$width-5,$height/2,'000000',1);
681: } else {
682: $plot .= &line(5,$height/2,$width-5,$height/2,'000000',1);
683: }
684: $plot .= '</drawimage>';
685: my $plotresult = &Apache::lonxml::xmlparse($r,'web',$plot);
686: my $result = '<table>'.
687: '<tr><td colspan="3" align="center">'.
688: '<font size="+2">'.&mt('Distribution of correct answers').'</font>'.
689: '<br />'.&mt('[_1] students, [_2] distinct correct answers',
690: $n,scalar(keys(%$data))).
691: '<br />'.&mt('Maximum number of coinciding values: [_1]',$max_y).
692: '</td></tr>'.
693: '<tr>'.
694: '<td valign="center">'.$min_x.'</td>'.
695: '<td>'.$plotresult.'</td>'.
696: '<td valign="center">'.$max_x.'</td>'.
697: '</tr>'.
698: '</table>';
699: return $result;
700: }
701:
702: ##
703: ## Helper subroutines for <drawimage>.
704: ## These should probably go somewhere more suitable soon.
705: sub line {
706: my ($x1,$y1,$x2,$y2,$color,$thickness) = @_;
707: return qq{<line x1="$x1" y1="$y1" x2="$x2" y2="$y2" color="$color" thickness="$thickness" />};
708: }
709:
710: sub text {
711: my ($x,$y,$color,$text,$font,$direction) = @_;
712: if (! defined($font) || $font !~ /^(tiny|small|medium|large|giant)$/) {
713: $font = 'medium';
714: }
715: if (! defined($direction) || $direction ne 'vertical') {
716: $direction = '';
717: }
718: return qq{<text x="$x" y="$y" color="$color" font="$font" direction="$direction" >$text</text>};
719: }
720:
721: sub rectangle {
722: my ($x1,$y1,$x2,$y2,$color,$thickness,$filled) = @_;
723: return qq{<rectangle x1="$x1" y1="$y1" x2="$x2" y2="$y2" color="$color" thickness="$thickness" filled="$filled" />};
724: }
725:
726: sub arc {
727: my ($x,$y,$width,$height,$start,$end,$color,$thickness,$filled)=@_;
728: return qq{<arc x="$x" y="$y" width="$width" height="$height" start="$start" end="$end" color="$color" thickness="$thickness" filled="$filled" />};
729: }
730:
731: sub circle {
732: my ($x,$y,$radius,$color,$thickness,$filled)=@_;
733: return &arc($x,$y,$radius,$radius,0,360,$color,$thickness,$filled);
734: }
735:
736: #########################################################
737: #########################################################
738: ##
739: ## Radio Response Routines
740: ##
741: #########################################################
742: #########################################################
743: sub radio_response_analysis {
744: my ($r,$problem,$problem_analysis,$students) = @_;
745: #
746: if ($ENV{'form.AnalyzeOver'} !~ /^(tries|time)$/) {
747: $r->print('Bad request');
748: }
749: #
750: my ($resource,$partid,$respid) = ($problem->{'resource'},
751: $problem->{'part'},
752: $problem->{'respid'});
753: #
754: my $analysis_html;
755: my $foildata = $problem_analysis->{'_Foils'};
756: my ($table,$foils,$concepts) = &build_foil_index($problem_analysis);
757: if (! defined($concepts)) {
758: $concepts = [];
759: }
760: #
761: my %true_foils;
762: my $num_true = 0;
763: if (! $problem_analysis->{'answercomputed'}) {
764: foreach my $foil (@$foils) {
765: if ($foildata->{$foil}->{'value'} eq 'true') {
766: $true_foils{$foil}++;
767: }
768: }
769: $num_true = scalar(keys(%true_foils));
770: }
771: #
772: $analysis_html .= $table;
773: # Gather student data
774: my $response_data = &Apache::loncoursedata::get_response_data
775: ([&Apache::lonstatistics::get_selected_sections()],
776: $Apache::lonstatistics::enrollment_status,
777: $resource->symb,$respid);
778: my $correct; # either a hash reference or a scalar
779: if ($problem_analysis->{'answercomputed'} || scalar(@$concepts) > 1) {
780: # This takes a while for large classes...
781: &Apache::lonstathelpers::GetStudentAnswers($r,$problem,$students,
782: 'Statistics',
783: 'stats_status');
784: foreach my $student (@$students) {
785: my ($idx,@remainder) = split('&',$student->{'answer'});
786: my ($answer) = ($remainder[$idx]=~/^(.*)=([^=]*)$/);
787: $correct->{$student->{'username'}.':'.$student->{'domain'}}=
788: &Apache::lonnet::unescape($answer);
789: }
790: } else {
791: foreach my $foil (keys(%$foildata)) {
792: if ($foildata->{$foil}->{'value'} eq 'true') {
793: $correct = $foildata->{$foil}->{'name'};
794: }
795: }
796: }
797: #
798: if (! defined($response_data) || ref($response_data) ne 'ARRAY' ) {
799: $analysis_html = '<h2>'.
800: &mt('There is no submission data for this resource').
801: '</h2>';
802: $r->print($analysis_html);
803: return;
804: }
805: #
806: $analysis_html.='<table>';
807: for (my $plot_num = 1;$plot_num<=$ENV{'form.NumPlots'};$plot_num++) {
808: # classify data ->correct foil -> selected foil
809: my ($restriction_function,
810: $correct_foil_title,$incorrect_foil_title,
811: $pre_graph_text,$post_graph_text,
812: $no_data_text,@extra_data);
813: if ($ENV{'form.AnalyzeOver'} eq 'tries') {
814: $restriction_function = sub {($_[0]->{'tries'} == $plot_num?1:0)};
815: $correct_foil_title = 'Attempt '.$plot_num;
816: $incorrect_foil_title = 'Attempt '.$plot_num;
817: $pre_graph_text =
818: 'Attempt [_1], [_2] submissions, [_3] correct, [_4] incorrect';
819: $post_graph_text = '';
820: $no_data_text = 'No data exists for attempt [_1]';
821: } elsif ($ENV{'form.AnalyzeOver'} eq 'time') {
822: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
823: ('startdate_'.$plot_num);
824: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
825: ('enddate_'.$plot_num);
826: ($starttime,$endtime) = &ensure_start_end_times
827: ($starttime,$endtime,
828: &get_time_from_row($response_data->[0]),
829: &get_time_from_row($response_data->[-1]),
830: $plot_num);
831: $pre_graph_text =
832: 'Data from [_6] to [_7]<br /> [_2] submissions from [_5] students, [_3] correct, [_4] incorrect';
833: $extra_data[0] = &Apache::lonlocal::locallocaltime($starttime);
834: $extra_data[1] = &Apache::lonlocal::locallocaltime($endtime);
835: #
836: $post_graph_text =
837: &mt('Start time: [_1]',
838: &Apache::lonhtmlcommon::date_setter
839: ('Statistics','startdate_'.$plot_num,$starttime)).
840: '<br />'.
841: &mt('End time: [_1]',
842: &Apache::lonhtmlcommon::date_setter
843: ('Statistics','enddate_'.$plot_num,$endtime));
844: $restriction_function =
845: sub {
846: my $t = $_[0]->{'timestamp'};
847: if ($t >= $starttime && $t < $endtime) {
848: return 1;
849: } else {
850: return 0;
851: }
852: };
853: $no_data_text = 'No data for [_5] to [_6]';
854: }
855: my $foil_choice_data =
856: &classify_response_data($response_data,$correct,
857: $restriction_function);
858: # &Apache::lonstathelpers::log_hash_ref($foil_choice_data);
859: my $answers;
860: if (ref($correct)) {
861: my %tmp;
862: foreach my $foil (values(%$correct)) {
863: $tmp{$foil}++;
864: }
865: $answers = [keys(%tmp)];
866: } else {
867: $answers = [$correct];
868: }
869: # Concept Plot
870: my $concept_plot = '';
871: if (scalar(@$concepts) > 1) {
872: $concept_plot = &RR_concept_plot($concepts,$foil_choice_data,
873: 'Correct Concepts');
874: }
875: # % Choosing plot
876: my $choice_plot = &RR_create_percent_selected_plot
877: ($concepts,$foils,$foil_choice_data,$correct_foil_title);
878: # for each correct foil, how did they mark it? (stacked bar graph)
879: my ($stacked_plot,$count_by_foil);
880: if ($problem_analysis->{'answercomputed'} || $num_true > 1) {
881: ($stacked_plot,$count_by_foil) =
882: &RR_create_stacked_selection_plot($foils,$foil_choice_data,
883: $incorrect_foil_title,
884: \%true_foils);
885: }
886: #
887: if ($concept_plot ne '' ||
888: $choice_plot ne '' ||
889: $stacked_plot ne '') {
890: my $correct = $foil_choice_data->{'_correct'};
891: $correct |= 0;
892: my $incorrect = $foil_choice_data->{'_count'}-$correct;
893: $analysis_html.= '<tr><td colspan="4" align="center">'.
894: '<font size="+1">'.
895: &mt($pre_graph_text,
896: $plot_num,$foil_choice_data->{'_count'},
897: $correct,
898: $incorrect,
899: $foil_choice_data->{'_students'},
900: @extra_data).
901: '</td></tr>'.$/;
902: $analysis_html.=
903: '<tr>'.
904: '<td>'.$concept_plot.'</td>'.
905: '<td>'.$choice_plot.'</td>';
906: if ($stacked_plot ne '') {
907: $analysis_html .=
908: '<td>'.$stacked_plot.'</td>'.
909: '<td>'.&build_foil_key($foils,$count_by_foil).'</td>';
910: } else {
911: $analysis_html .= ('<td></td>'x2);
912: }
913: $analysis_html.='</tr>'.$/;
914: if (defined($post_graph_text)) {
915: $analysis_html.= '<tr><td colspan="4" align="center">'.
916: $post_graph_text.'</td></tr>'.$/;
917: }
918: } elsif ($no_data_text ne '') {
919: $analysis_html.='<tr><td colspan="4" align="center">'.
920: &mt($no_data_text,
921: $plot_num,$foil_choice_data->{'_count'},
922: $correct,
923: $foil_choice_data->{'_count'}-$correct,
924: @extra_data);
925: if (defined($post_graph_text)) {
926: $analysis_html.='<br />'.$post_graph_text;
927: }
928: $analysis_html.='</td></tr>'.$/;
929: }
930: } # end of loop for plots
931: $analysis_html.='</table>';
932: $r->print($analysis_html);
933: }
934:
935: sub ensure_start_end_times {
936: my ($start,$end,$first,$last,$plot_num) = @_;
937: if (! defined($start) || ! defined($end)) {
938: my $sec_in_day = 86400;
939: my ($sday,$smon,$syear) =
940: (localtime($last - $sec_in_day*($plot_num-1)))[3..5];
941: $start = &Time::Local::timelocal(0,0,0,$sday,$smon,$syear);
942: $end = $start + $sec_in_day;
943: if ($plot_num == $ENV{'form.NumPlots'}) {
944: $start = $first;
945: }
946: }
947: return ($start,$end);
948: }
949:
950: sub RR_concept_plot {
951: my ($concepts,$foil_data,$title) = @_;
952: #
953: my %correct_by_concept;
954: my %incorrect_by_concept;
955: my %true;
956: foreach my $concept (@$concepts) {
957: foreach my $foil (@{$concept->{'foils'}}) {
958: next if (! exists($foil_data->{$foil}));
959: foreach my $choice (keys(%{$foil_data->{$foil}})) {
960: if ($choice eq $foil) {
961: $correct_by_concept{$concept->{'name'}} +=
962: $foil_data->{$foil}->{$choice};
963: } else {
964: $incorrect_by_concept{$concept->{'name'}} +=
965: $foil_data->{$foil}->{$choice};
966: }
967: }
968: }
969: }
970: #
971: # need arrays for incorrect and correct because we want to use different
972: # colors for them
973: my @correct;
974: #
975: my $total =0;
976: for (my $i=0;$i<scalar(@$concepts);$i++) {
977: my $concept = $concepts->[$i];
978: $correct[$i] = $correct_by_concept{$concept->{'name'}};
979: $total += $correct_by_concept{$concept->{'name'}}+
980: $incorrect_by_concept{$concept->{'name'}};
981: }
982: if ($total == 0) { return ''; };
983: for (my $i=0;$i<=$#correct;$i++) {
984: $correct[$i] = sprintf('%0f',$correct[$i]/$total*100);
985: }
986: my $xlabel = 'concept';
987: my $plot= &Apache::loncommon::DrawBarGraph($title,
988: $xlabel,
989: 'Percent Choosing',
990: 100,
991: ['#33ff00','#ff3300'],
992: undef,
993: \@correct);
994: return $plot;
995: }
996:
997: sub RR_create_percent_selected_plot {
998: my ($concepts,$foils,$foil_data,$title) = @_;
999: #
1000: if ($foil_data->{'_count'} == 0) { return ''; };
1001: my %correct_selections;
1002: my %incorrect_selections;
1003: foreach my $foil (@$foils) {
1004: # foil_data has format $foil_data->{true_foil}->{selected foil}=count
1005: next if (! exists($foil_data->{$foil}));
1006: while (my ($f,$count)= each(%{$foil_data->{$foil}})) {
1007: if ($f eq $foil) {
1008: $correct_selections{$foil} += $count;
1009: } else {
1010: $incorrect_selections{$f} += $count;
1011: }
1012: }
1013: }
1014: #
1015: # need arrays for incorrect and correct because we want to use different
1016: # colors for them
1017: my @correct;
1018: my @incorrect;
1019: #
1020: my $total = $foil_data->{'_count'};
1021: for (my $i=0;$i<scalar(@$foils);$i++) {
1022: my $foil = $foils->[$i];
1023: $correct[$i] = $correct_selections{$foil};
1024: $incorrect[$i] = $incorrect_selections{$foil};
1025: }
1026: for (my $i=0;$i<=$#correct;$i++) {
1027: $correct[$i] = sprintf('%2f',$correct[$i]/$total*100);
1028: }
1029: for (my $i=0;$i<=$#incorrect;$i++) {
1030: $incorrect[$i] = sprintf('%2f',$incorrect[$i]/$total*100);
1031: }
1032: #
1033: # Put a blank in the data sets between concepts, if there are concepts
1034: my @labels;
1035: if (defined($concepts) && scalar(@$concepts) > 1) {
1036: my @new_correct;
1037: my @new_incorrect;
1038: my $foil_count = 0;
1039: foreach my $concept (@$concepts) {
1040: foreach (@{$concept->{'foils'}}) {
1041: push(@new_correct, $correct[$foil_count]);
1042: push(@new_incorrect,$incorrect[$foil_count]);
1043: push(@labels,++$foil_count);
1044: }
1045: push(@new_correct,'');
1046: push(@new_incorrect,'');
1047: push(@labels,'');
1048: }
1049: @correct = @new_correct;
1050: @incorrect = @new_incorrect;
1051: } else {
1052: @labels = (1 .. scalar(@correct));
1053: }
1054: #
1055: my $xlabel = 'foil chosen';
1056: my $plot= &Apache::loncommon::DrawBarGraph($title,
1057: $xlabel,
1058: 'Percent Choosing',
1059: 100,
1060: ['#33ff00','#ff3300'],
1061: \@labels,
1062: \@correct,
1063: \@incorrect);
1064: return $plot;
1065: }
1066:
1067: sub RR_create_stacked_selection_plot {
1068: my ($foils,$foil_data,$title,$true_foils)=@_;
1069: #
1070: my @dataset; # array of array refs - multicolor rows $datasets[row]->[col]
1071: my @labels;
1072: my $count;
1073: my %column; # maps foil name to column in @datasets
1074: for (my $i=0;$i<scalar(@$foils);$i++) {
1075: my $foil = $foils->[$i];
1076: if (defined($true_foils) && scalar(keys(%$true_foils)) > 0 ) {
1077: next if (! $true_foils->{$foil} );
1078: push(@labels,$i+1);
1079: } else {
1080: next if (! exists($foil_data->{$foil}));
1081: push(@labels,$i+1);
1082: }
1083: next if (! exists($foil_data->{$foils->[$i]}));
1084: $column{$foil}= $count++;
1085: for (my $j=0;$j<scalar(@$foils);$j++) {
1086: my $value = 0;
1087: if ($i != $j ) {
1088: $value += $foil_data->{$foil}->{$foils->[$j]};
1089: }
1090: $dataset[$j]->[$column{$foil}]=$value;
1091: }
1092: }
1093: #
1094: return '' if (! scalar(keys(%column)));
1095: #
1096: my $grand_total = 0;
1097: my %count_per_foil;
1098: while (my ($foil,$bar) = each (%column)) {
1099: my $bar_total = 0;
1100: for (my $j=0;$j<scalar(@dataset);$j++) {
1101: $bar_total += $dataset[$j]->[$bar];
1102: }
1103: next if ($bar_total == 0);
1104: for (my $j=0;$j<scalar(@dataset);$j++) {
1105: $dataset[$j]->[$bar] =
1106: sprintf('%2f',$dataset[$j]->[$bar]/$bar_total * 100);
1107: }
1108: $count_per_foil{$foil}=' ( '.$bar_total.' )';
1109: $grand_total += $bar_total;
1110: }
1111: if ($grand_total == 0) {
1112: return ('',undef);
1113: }
1114: my @empty_row = ();
1115: foreach (@{$dataset[0]}) {
1116: push(@empty_row,0);
1117: }
1118: #
1119: my $graph = &Apache::loncommon::DrawBarGraph
1120: ($title,'Correct Foil','foils chosen Incorrectly',
1121: 100,$plotcolors,\@labels,\@empty_row,@dataset);
1122: return ($graph,\%count_per_foil);
1123: }
1124:
1125:
1126: #########################################################
1127: #########################################################
1128: ##
1129: ## Misc routines
1130: ##
1131: #########################################################
1132: #########################################################
1133:
1134: # if $correct is a hash ref, it is assumed to be indexed by student names.
1135: # the values are assumed to be hash refs with a key of 'answer'.
1136: sub classify_response_data {
1137: my ($full_row_data,$correct,$function) = @_;
1138: my %submission_data;
1139: my %students;
1140: my $max=0;
1141: foreach my $row (@$full_row_data) {
1142: my %subm = &hashify_attempt($row);
1143: if (ref($correct) eq 'HASH') {
1144: $subm{'correct'} = $correct->{$subm{'student'}};
1145: } else {
1146: $subm{'correct'} = $correct;
1147: }
1148: $subm{'submission'} =~ s/=\d+\s*$//;
1149: if (&$function(\%subm)) {
1150: $students{$subm{'student'}}++;
1151: $submission_data{'_count'}++;
1152: if (&submission_is_correct($subm{'award'})) {
1153: $submission_data{'_correct'}++;
1154: }
1155:
1156: if($max<++$submission_data{$subm{'correct'}}->{$subm{'submission'}}) {
1157: $max=$submission_data{$subm{'correct'}}->{$subm{'submission'}};
1158: }
1159: }
1160: }
1161: $submission_data{'_max'} = $max;
1162: $submission_data{'_students'}=scalar(keys(%students));
1163: return \%submission_data;
1164: }
1165:
1166:
1167: #########################################################
1168: #########################################################
1169: ##
1170: ## Option Response Routines
1171: ##
1172: #########################################################
1173: #########################################################
1174: sub OptionResponseAnalysis {
1175: my ($r,$problem,$problem_data,$Students) = @_;
1176: my ($resource,$respid) = ($problem->{'resource'},
1177: $problem->{'respid'});
1178: # Note: part data is not needed.
1179: my $PerformanceData = &Apache::loncoursedata::get_response_data
1180: ([&Apache::lonstatistics::get_selected_sections()],
1181: $Apache::lonstatistics::enrollment_status,
1182: $resource->symb,$respid);
1183: if (! defined($PerformanceData) ||
1184: ref($PerformanceData) ne 'ARRAY' ) {
1185: $r->print('<h2>'.
1186: &mt('There is no student data for this problem.').
1187: '</h2>');
1188: } else {
1189: $r->rflush();
1190: if ($ENV{'form.AnalyzeOver'} eq 'tries') {
1191: my $analysis_html = &OR_tries_analysis($r,
1192: $PerformanceData,
1193: $problem_data);
1194: $r->print($analysis_html);
1195: $r->rflush();
1196: } elsif ($ENV{'form.AnalyzeOver'} eq 'time') {
1197: my $analysis_html = &OR_time_analysis($PerformanceData,
1198: $problem_data);
1199: $r->print($analysis_html);
1200: $r->rflush();
1201: } else {
1202: $r->print('<h2>'.
1203: &mt('The analysis you have selected is '.
1204: 'not supported at this time').
1205: '</h2>');
1206: }
1207: }
1208: }
1209:
1210: #########################################################
1211: #
1212: # Option Response: tries Analysis
1213: #
1214: #########################################################
1215: sub OR_tries_analysis {
1216: my ($r,$PerformanceData,$ORdata) = @_;
1217: my $mintries = 1;
1218: my $maxtries = $ENV{'form.NumPlots'};
1219: my ($table,$Foils,$Concepts) = &build_foil_index($ORdata);
1220: if (! defined($Concepts)) {
1221: $Concepts = [];
1222: }
1223: my %response_data = &OR_analyze_by_tries($r,$PerformanceData,
1224: $mintries,$maxtries);
1225: my $analysis = '';
1226: #
1227: # Compute the data necessary to make the plots
1228: my @foil_plot;
1229: my @concept_data;
1230: for (my $j=0;$j<=scalar(@$Concepts);$j++) {
1231: my $concept = $Concepts->[$j];
1232: foreach my $foilid (@{$concept->{'foils'}}) {
1233: for (my $try=$mintries;$try<=$maxtries;$try++) {
1234: # concept analysis data
1235: $concept_data[$j]->[$try]->{'_correct'} +=
1236: $response_data{$foilid}->[$try]->{'_correct'};
1237: $concept_data[$j]->[$try]->{'_total'} +=
1238: $response_data{$foilid}->[$try]->{'_total'};
1239: #
1240: # foil analysis data
1241: if ($response_data{$foilid}->[$try]->{'_total'} == 0) {
1242: push(@{$foil_plot[$try]->{'_correct'}},0);
1243: } else {
1244: push(@{$foil_plot[$try]->{'_correct'}},
1245: 100*$response_data{$foilid}->[$try]->{'_correct'}/
1246: $response_data{$foilid}->[$try]->{'_total'});
1247: }
1248: foreach my $option (@{$ORdata->{'_Options'}}) {
1249: push(@{$foil_plot[$try]->{'_total'}},
1250: $response_data{$foilid}->[$try]->{'_total'});
1251: if ($response_data{$foilid}->[$try]->{'_total'} == 0) {
1252: push (@{$foil_plot[$try]->{$option}},0);
1253: } else {
1254: if ($response_data{$foilid}->[$try]->{'_total'} ==
1255: $response_data{$foilid}->[$try]->{'_correct'}) {
1256: push(@{$foil_plot[$try]->{$option}},0);
1257: } else {
1258: push (@{$foil_plot[$try]->{$option}},
1259: 100 *
1260: $response_data{$foilid}->[$try]->{$option} /
1261: ($response_data{$foilid}->[$try]->{'_total'}
1262: -
1263: $response_data{$foilid}->[$try]->{'_correct'}
1264: ));
1265: }
1266: }
1267: } # End of foreach my $option
1268: }
1269: } # End of foreach my $foilid
1270: } # End of concept loops
1271: #
1272: # Build a table for the plots
1273: my $analysis_html = "<br /><table>\n";
1274: my $optionkey = &build_option_index($ORdata);
1275: my $num_concepts = 1;
1276: if (defined($Concepts)) { $num_concepts = scalar(@$Concepts); }
1277: #
1278: for (my $try=$mintries;$try<=$maxtries;$try++) {
1279: if (! defined($response_data{'_total'}->[$try]) ||
1280: $response_data{'_total'}->[$try] == 0) {
1281: if ($try > 1) {
1282: $analysis_html.= '<tr><td align="center" colspan="4"><b>'.
1283: &mt('None of the selected students attempted the problem more than [_1] times.',$try-1).
1284: '</b></td></tr>';
1285: } else {
1286: $analysis_html.= '<tr><td colspan="4" align="center"><b>'.
1287: &mt('None of the selected students have attempted the problem').'</b></td></tr>';
1288: }
1289: last;
1290: }
1291: my $concept_graph='';
1292: if ($num_concepts > 1) {
1293: #
1294: # Create concept plot
1295: my @concept_plot_data;
1296: for (my $j=0;$j<=$#concept_data;$j++) {
1297: my $total = $concept_data[$j]->[$try]->{'_total'};
1298: if ($total == 0) {
1299: $concept_plot_data[$j] = 0;
1300: } else {
1301: $concept_plot_data[$j] = 100 *
1302: sprintf('%0.3f',
1303: $concept_data[$j]->[$try]->{'_correct'} /
1304: $total);
1305: }
1306: }
1307: #
1308: $concept_graph = &Apache::loncommon::DrawBarGraph
1309: ('Correct Concepts','Concept Number','Percent Correct',
1310: 100,$plotcolors,undef,\@concept_plot_data,{xskip=>1});
1311: }
1312: #
1313: # Create Foil Plots
1314: my $data_count = $response_data{'_total'}->[$try];
1315: my $correct = $response_data{'_correct'}->[$try];
1316: $correct |= 0;
1317: my @Datasets;
1318: foreach my $option ('_correct',@{$ORdata->{'_Options'}}) {
1319: next if (! exists($foil_plot[$try]->{$option}));
1320: push(@Datasets,$foil_plot[$try]->{$option});
1321: }
1322: #
1323: # Put a blank in the data set between concepts
1324: for (my $set =0;$set<=$#Datasets;$set++) {
1325: my @Data = @{$Datasets[$set]};
1326: my $idx = 0;
1327: foreach my $concept (@{$Concepts}) {
1328: foreach my $foilid (@{$concept->{'foils'}}) {
1329: $Datasets[$set]->[$idx++]=shift(@Data);
1330: }
1331: if ($concept->{'name'} ne $Concepts->[-1]->{'name'}) {
1332: $Datasets[$set]->[$idx++] = 0;
1333: }
1334: }
1335: }
1336: #
1337: # Set up the labels needed for the bar graph
1338: my @Labels;
1339: my $idx = 1;
1340: foreach my $concept (@{$Concepts}) {
1341: foreach my $foilid (@{$concept->{'foils'}}) {
1342: push(@Labels,$idx++);
1343: }
1344: push(@Labels,'');
1345: }
1346: #
1347: my $correct_graph = &Apache::loncommon::DrawBarGraph
1348: ('Correct Statements','Statement','% Answered Correct',
1349: 100,$plotcolors,\@Labels,$Datasets[0],{xskip=>1});
1350:
1351: #
1352: #
1353: next if (! defined($Datasets[0]));
1354: for (my $i=0; $i< scalar(@{$Datasets[0]});$i++) {
1355: $Datasets[0]->[$i]=0;
1356: }
1357: my $count = $response_data{'_total'}->[$try] -
1358: $response_data{'_correct'}->[$try];
1359: my $incorrect_graph = &Apache::loncommon::DrawBarGraph
1360: ('Incorrect Statements','Statement','% Chosen Incorrectly',
1361: 100,$plotcolors,\@Labels,@Datasets,{xskip=>1});
1362: $analysis_html.=
1363: '<tr><td colspan="4" align="center">'.
1364: '<font size="+1">'.
1365: &mt('Attempt [_1], [_2] submissions, [_3] correct, [_4] incorrect',
1366: $try,$data_count,$correct,$data_count-$correct).
1367: '</font>'.'</td></tr>'.$/.
1368: '<tr>'.
1369: '<td>'.$concept_graph.'</td>'.
1370: '<td>'.$correct_graph.'</td>'.
1371: '<td>'.$incorrect_graph.'</td>'.
1372: '<td>'.$optionkey.'<td>'.
1373: '</tr>'.$/;
1374: }
1375: $analysis_html .= "</table>\n";
1376: $table .= $analysis_html;
1377: return $table;
1378: }
1379:
1380: sub OR_analyze_by_tries {
1381: my ($r,$PerformanceData,$mintries,$maxtries) = @_;
1382: my %Trydata;
1383: $mintries = 1 if (! defined($mintries) || $mintries < 1);
1384: $maxtries = $mintries if (! defined($maxtries) || $maxtries < $mintries);
1385: my @students;
1386: foreach my $row (@$PerformanceData) {
1387: next if (! defined($row));
1388: my $tries = &get_tries_from_row($row);
1389: my %Row = &Process_OR_Row($row);
1390: next if (! %Row);
1391: my $student_id = $row->[&Apache::loncoursedata::RD_student_id()];
1392: $students[$tries]->{$student_id}++;
1393: while (my ($foilid,$href) = each(%Row)) {
1394: if (! ref($href)) {
1395: $Trydata{$foilid}->[$tries] += $href;
1396: next;
1397: }
1398: while (my ($option,$value) = each(%$href)) {
1399: $Trydata{$foilid}->[$tries]->{$option}+=$value;
1400: }
1401: }
1402: }
1403: for (my $try=$mintries;$try<=$maxtries;$try++) {
1404: $Trydata{'_studentcount'}->[$try] = scalar(keys(%{$students[$try]}));
1405: }
1406: return %Trydata;
1407: }
1408:
1409: #########################################################
1410: #
1411: # Option Response: Time Analysis
1412: #
1413: #########################################################
1414: sub OR_time_analysis {
1415: my ($performance_data,$ORdata) = @_;
1416: my ($table,$Foils,$Concepts) = &build_foil_index($ORdata);
1417: my $foilkey = &build_option_index($ORdata);
1418: my $num_concepts = 1;
1419: if (defined($Concepts)) { $num_concepts = scalar(@$Concepts); }
1420: #
1421: if ($num_concepts < 2) {
1422: $table = '<h3>'.
1423: &mt('Not enough data for concept analysis. '.
1424: 'Performing Foil Analysis').
1425: '</h3>'.$table;
1426: }
1427: #
1428: my $num_plots = $ENV{'form.NumPlots'};
1429: my $num_data = scalar(@$performance_data)-1;
1430: #
1431: my $current_index;
1432: $table .= "<table>\n";
1433: for (my $i=0;$i<$num_plots;$i++) {
1434: ##
1435: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
1436: ('startdate_'.$i);
1437: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
1438: ('enddate_'.$i);
1439: if (! defined($starttime) || ! defined($endtime)) {
1440: my $sec_in_day = 86400;
1441: my $last_sub_time = &get_time_from_row($performance_data->[-1]);
1442: my ($sday,$smon,$syear) =
1443: (localtime($last_sub_time - $sec_in_day*$i))[3..5];
1444: $starttime = &Time::Local::timelocal(0,0,0,$sday,$smon,$syear);
1445: $endtime = $starttime + $sec_in_day;
1446: if ($i == ($num_plots -1 )) {
1447: $starttime = &get_time_from_row($performance_data->[0]);
1448: }
1449: }
1450: $table .= '<tr><td colspan="4" align="center"><font size="+1">'.
1451: &mt('Data from [_1] to [_2]',
1452: &Apache::lonlocal::locallocaltime($starttime),
1453: &Apache::lonlocal::locallocaltime($endtime)).
1454: '</font></td></tr>'.$/;
1455: my $startdateform = &Apache::lonhtmlcommon::date_setter
1456: ('Statistics','startdate_'.$i,$starttime);
1457: my $enddateform = &Apache::lonhtmlcommon::date_setter
1458: ('Statistics','enddate_'.$i,$endtime);
1459: #
1460: my $begin_index;
1461: my $end_index;
1462: my $j;
1463: while (++$j < scalar(@$performance_data)) {
1464: last if (&get_time_from_row($performance_data->[$j])
1465: > $starttime);
1466: }
1467: $begin_index = $j;
1468: while ($j < scalar(@$performance_data)) {
1469: if (&get_time_from_row($performance_data->[$j]) > $endtime) {
1470: last;
1471: } else {
1472: $j++;
1473: }
1474: }
1475: $end_index = $j;
1476: ##
1477: my ($processed_time_data,$correct,$data_count,$student_count) =
1478: &OR_time_process_data($performance_data,$begin_index,$end_index);
1479: $correct |= 0;
1480: ##
1481: $table .= '<tr><td colspan="4" align="center"><font size="+1">'.
1482: &mt('[_1] submissions from [_2] students, [_3] correct, [_4] incorrect',
1483: $data_count,$student_count,$correct,$data_count-$correct).
1484: '</font></td></tr>'.$/;
1485: my $concept_correct_plot = '';
1486: if ($num_concepts > 1) {
1487: $concept_correct_plot =
1488: &OR_Concept_Time_Analysis($processed_time_data,
1489: $correct,$data_count,$student_count,
1490: $ORdata,$Concepts);
1491: }
1492: my ($foil_correct_plot,$foil_incorrect_plot) =
1493: &OR_Foil_Time_Analysis($processed_time_data,
1494: $correct,$data_count,$student_count,
1495: $ORdata,$Foils,$Concepts);
1496: $table .= '<tr>'.
1497: '<td>'.$concept_correct_plot.'</td>'.
1498: '<td>'.$foil_correct_plot.'</td>'.
1499: '<td>'.$foil_incorrect_plot.'</td>'.
1500: '<td align="left" valign="top">'.$foilkey.'</td></tr>'.$/;
1501: $table .= '<tr><td colspan="4" align="center">'.
1502: &mt('Start time: [_1]',$startdateform).'<br />'.
1503: &mt('End time: [_1]',$enddateform).'</td></tr>'.$/;
1504: $table.= '<tr><td colspan="4"> </td></tr>'.$/;
1505: }
1506: $table .= '</table>';
1507: #
1508: return $table;
1509: }
1510:
1511: sub OR_Foil_Time_Analysis {
1512: my ($processed_time_data,$correct,$data_count,$student_count,
1513: $ORdata,$Foils,$Concepts) = @_;
1514: if ($data_count <= 0) {
1515: return ('<h2>'.&mt('There is no data to plot').'</h2>','');
1516: }
1517: my $analysis_html;
1518: my @plotdata;
1519: my @labels;
1520: foreach my $concept (@{$Concepts}) {
1521: foreach my $foil (@{$concept->{'foils'}}) {
1522: push(@labels,scalar(@labels)+1);
1523: my $total = $processed_time_data->{$foil}->{'_total'};
1524: if ($total == 0) {
1525: push(@{$plotdata[0]},0);
1526: } else {
1527: push(@{$plotdata[0]},
1528: 100 * $processed_time_data->{$foil}->{'_correct'} / $total);
1529: }
1530: my $total_incorrect = $total - $processed_time_data->{$foil}->{'_correct'};
1531: for (my $i=0;$i<scalar(@{$ORdata->{'_Options'}});$i++) {
1532: my $option = $ORdata->{'_Options'}->[$i];
1533: if ($total_incorrect == 0) {
1534: push(@{$plotdata[$i+1]},0);
1535: } else {
1536: push(@{$plotdata[$i+1]},
1537: 100 * $processed_time_data->{$foil}->{$option} / $total_incorrect);
1538: }
1539: }
1540: }
1541: # Put in a blank one
1542: push(@labels,'');
1543: push(@{$plotdata[0]},0);
1544: for (my $i=0;$i<scalar(@{$ORdata->{'_Options'}});$i++) {
1545: push(@{$plotdata[$i+1]},0);
1546: }
1547: }
1548: #
1549: # Create the plot
1550: my $correct_plot = &Apache::loncommon::DrawBarGraph('Correct Statements',
1551: 'Statement Number',
1552: 'Percent Correct',
1553: 100,
1554: $plotcolors,
1555: undef,
1556: $plotdata[0],
1557: {xskip=>1});
1558: for (my $j=0; $j< scalar(@{$plotdata[0]});$j++) {
1559: $plotdata[0]->[$j]=0;
1560: }
1561: my $incorrect_plot =
1562: &Apache::loncommon::DrawBarGraph('Incorrect Statements',
1563: 'Statement Number',
1564: 'Incorrect Option Choice',
1565: 100,
1566: $plotcolors,
1567: undef,
1568: @plotdata,{xskip=>1});
1569: return ($correct_plot,$incorrect_plot);
1570: }
1571:
1572: sub OR_Concept_Time_Analysis {
1573: my ($processed_time_data,$correct,$data_count,$student_count,
1574: $ORdata,$Concepts) = @_;
1575: return '' if ($data_count == 0);
1576: #
1577: # Put the data in plottable form
1578: my @plotdata;
1579: foreach my $concept (@$Concepts) {
1580: my ($total,$correct);
1581: foreach my $foil (@{$concept->{'foils'}}) {
1582: $total += $processed_time_data->{$foil}->{'_total'};
1583: $correct += $processed_time_data->{$foil}->{'_correct'};
1584: }
1585: if ($total == 0) {
1586: push(@plotdata,0);
1587: } else {
1588: push(@plotdata,100 * $correct / $total);
1589: }
1590: }
1591: #
1592: # Create the plot
1593: return &Apache::loncommon::DrawBarGraph('Correct Concepts',
1594: 'Concept Number',
1595: 'Percent Correct',
1596: 100,
1597: $plotcolors,
1598: undef,
1599: \@plotdata,{xskip=>1});
1600: }
1601:
1602: sub OR_time_process_data {
1603: my ($performance_data,$begin_index,$end_index)=@_;
1604: my %processed_time_data;
1605: my %distinct_students;
1606: my ($correct,$data_count);
1607: if (($begin_index == $end_index) &&
1608: ($end_index != scalar(@$performance_data)-1)) {
1609: return undef;
1610: }
1611: # Be sure we include the last one if we are asked for it.
1612: # That we have to correct here (and not when $end_index is
1613: # given a value) should probably be considered a bug.
1614: if ($end_index == scalar(@$performance_data)-1) {
1615: $end_index++;
1616: }
1617: my $count;
1618: for (my $i=$begin_index;$i<$end_index;$i++) {
1619: my $attempt = $performance_data->[$i];
1620: $count++;
1621: next if (! defined($attempt));
1622: my %attempt = &Process_OR_Row($attempt);
1623: $data_count++;
1624: $correct += $attempt{'_correct'};
1625: $distinct_students{$attempt->[&Apache::loncoursedata::RD_student_id()]}++;
1626: while (my ($foilid,$href) = each(%attempt)) {
1627: if (! ref($href)) {
1628: $processed_time_data{$foilid} += $href;
1629: next;
1630: }
1631: while (my ($option,$value) = each(%$href)) {
1632: $processed_time_data{$foilid}->{$option}+=$value;
1633: }
1634: }
1635: }
1636: return (\%processed_time_data,$correct,$data_count,
1637: scalar(keys(%distinct_students)));
1638: }
1639:
1640: sub build_foil_index {
1641: my ($ORdata) = @_;
1642: return if (! exists($ORdata->{'_Foils'}));
1643: my %Foildata = %{$ORdata->{'_Foils'}};
1644: my @Foils = sort(keys(%Foildata));
1645: my %Concepts;
1646: foreach my $foilid (@Foils) {
1647: push(@{$Concepts{$Foildata{$foilid}->{'_Concept'}}},
1648: $foilid);
1649: }
1650: undef(@Foils);
1651: # Having gathered the concept information in a hash, we now translate it
1652: # into an array because we need to be consistent about order.
1653: # Also put the foils in order, too.
1654: my $sortfunction = sub {
1655: my %Numbers = (one => 1,
1656: two => 2,
1657: three => 3,
1658: four => 4,
1659: five => 5,
1660: six => 6,
1661: seven => 7,
1662: eight => 8,
1663: nine => 9,
1664: ten => 10,);
1665: my $a1 = lc($a);
1666: my $b1 = lc($b);
1667: if (exists($Numbers{$a1})) {
1668: $a1 = $Numbers{$a1};
1669: }
1670: if (exists($Numbers{$b1})) {
1671: $b1 = $Numbers{$b1};
1672: }
1673: if (($a1 =~/^\d+$/) && ($b1 =~/^\d+$/)) {
1674: return $a1 <=> $b1;
1675: } else {
1676: return $a1 cmp $b1;
1677: }
1678: };
1679: my @Concepts;
1680: foreach my $concept (sort $sortfunction (keys(%Concepts))) {
1681: if (! defined($Concepts{$concept})) {
1682: $Concepts{$concept}=[];
1683: # next;
1684: }
1685: push(@Concepts,{ name => $concept,
1686: foils => [@{$Concepts{$concept}}]});
1687: push(@Foils,(@{$Concepts{$concept}}));
1688: }
1689: #
1690: # Build up the table of row labels.
1691: my $table = '<table border="1" >'."\n";
1692: if (@Concepts > 1) {
1693: $table .= '<tr>'.
1694: '<th>'.&mt('Concept Number').'</th>'.
1695: '<th>'.&mt('Concept').'</th>'.
1696: '<th>'.&mt('Foil Number').'</th>'.
1697: '<th>'.&mt('Foil Name').'</th>'.
1698: '<th>'.&mt('Foil Text').'</th>'.
1699: '<th>'.&mt('Correct Value').'</th>'.
1700: "</tr>\n";
1701: } else {
1702: $table .= '<tr>'.
1703: '<th>'.&mt('Foil Number').'</th>'.
1704: '<th>'.&mt('Foil Name').'</th>'.
1705: '<th>'.&mt('Foil Text').'</th>'.
1706: '<th>'.&mt('Correct Value').'</th>'.
1707: "</tr>\n";
1708: }
1709: my $conceptindex = 1;
1710: my $foilindex = 1;
1711: foreach my $concept (@Concepts) {
1712: my @FoilsInConcept = @{$concept->{'foils'}};
1713: my $firstfoil = shift(@FoilsInConcept);
1714: if (@Concepts > 1) {
1715: $table .= '<tr>'.
1716: '<td>'.$conceptindex.'</td>'.
1717: '<td>'.&HTML::Entities::encode($concept->{'name'},'<>&"').'</td>'.
1718: '<td>'.$foilindex++.'</td>'.
1719: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'name'},'<>&"').'</td>'.
1720: '<td>'.$Foildata{$firstfoil}->{'text'}.'</td>'.
1721: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'value'},'<>&"').'</td>'.
1722: "</tr>\n";
1723: } else {
1724: $table .= '<tr>'.
1725: '<td>'.$foilindex++.'</td>'.
1726: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'name'},'<>&"').'</td>'.
1727: '<td>'.$Foildata{$firstfoil}->{'text'}.'</td>'.
1728: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'value'},'<>&"').'</td>'.
1729: "</tr>\n";
1730: }
1731: foreach my $foilid (@FoilsInConcept) {
1732: if (@Concepts > 1) {
1733: $table .= '<tr>'.
1734: '<td></td>'.
1735: '<td></td>'.
1736: '<td>'.$foilindex.'</td>'.
1737: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'name'},'<>&"').'</td>'.
1738: '<td>'.$Foildata{$foilid}->{'text'}.'</td>'.
1739: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'value'},'<>&"').'</td>'.
1740: "</tr>\n";
1741: } else {
1742: $table .= '<tr>'.
1743: '<td>'.$foilindex.'</td>'.
1744: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'name'},'<>&"').'</td>'.
1745: '<td>'.$Foildata{$foilid}->{'text'}.'</td>'.
1746: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'value'},'<>&"').'</td>'.
1747: "</tr>\n";
1748: }
1749: } continue {
1750: $foilindex++;
1751: }
1752: } continue {
1753: $conceptindex++;
1754: }
1755: $table .= "</table>\n";
1756: #
1757: # Build option index with color stuff
1758: return ($table,\@Foils,\@Concepts);
1759: }
1760:
1761: sub build_option_index {
1762: my ($ORdata)= @_;
1763: my $table = "<table>\n";
1764: my $optionindex = 0;
1765: my @Rows;
1766: foreach my $option (&mt('correct option chosen'),@{$ORdata->{'_Options'}}) {
1767: my $color = $plotcolors->[$optionindex++];
1768: push (@Rows,
1769: '<tr>'.
1770: '<td bgcolor="'.$color.'">'.
1771: '<font color="'.$color.'">'.('*'x3).'</font>'.'</td>'.
1772: '<td>'.&HTML::Entities::encode($option,'<>&"').'</td>'.
1773: "</tr>\n");
1774: }
1775: shift(@Rows); # Throw away 'correct option chosen' color
1776: $table .= join('',reverse(@Rows));
1777: $table .= "</table>\n";
1778: }
1779:
1780: sub build_foil_key {
1781: my ($foils,$extra_data)= @_;
1782: if (! defined($extra_data)) { $extra_data = {}; }
1783: my $table = "<table>\n";
1784: my $foil_index = 0;
1785: my @rows;
1786: foreach my $foil (&mt('correct foil chosen'),@{$foils}) {
1787: my $color = $plotcolors->[$foil_index++];
1788: push (@rows,
1789: '<tr>'.
1790: '<td bgcolor="'.$color.'" class="key">'.
1791: '<font color="'.$color.'">'.('*'x4).'</font></td>'.
1792: '<td>'.&HTML::Entities::encode($foil,'<>&"').
1793: (' 'x2).$extra_data->{$foil}.'</td>'.
1794: "</tr>\n");
1795: }
1796: shift(@rows); # Throw away 'correct foil chosen' color
1797: $table .= join('',reverse(@rows));
1798: $table .= "</table>\n";
1799: }
1800:
1801: #########################################################
1802: #########################################################
1803: ##
1804: ## Generic Interface Routines
1805: ##
1806: #########################################################
1807: #########################################################
1808: sub CreateInterface {
1809: ##
1810: ## Environment variable initialization
1811: if (! exists$ENV{'form.AnalyzeOver'}) {
1812: $ENV{'form.AnalyzeOver'} = 'tries';
1813: }
1814: ##
1815: ## Build the menu
1816: my $Str = '';
1817: $Str .= &Apache::lonhtmlcommon::breadcrumbs
1818: (undef,'Detailed Problem Analysis');
1819: $Str .= '<table cellspacing="5">'."\n";
1820: $Str .= '<tr>';
1821: $Str .= '<td align="center"><b>'.&mt('Sections').'</b></td>';
1822: $Str .= '<td align="center"><b>'.&mt('Enrollment Status').'</b></td>';
1823: $Str .= '<td align="center"> </td>';
1824: $Str .= '</tr>'."\n";
1825: ##
1826: ##
1827: $Str .= '<tr><td align="center">'."\n";
1828: $Str .= &Apache::lonstatistics::SectionSelect('Section','multiple',5);
1829: $Str .= '</td>';
1830: #
1831: $Str .= '<td align="center">';
1832: $Str .= &Apache::lonhtmlcommon::StatusOptions(undef,undef,5);
1833: $Str .= '</td>';
1834: #
1835: ##
1836: ##
1837: $Str .= '<td>';
1838: ##
1839: my $showprob_checkbox =
1840: '<input type="checkbox" name="show_prob" value="true" ';
1841: if ($ENV{'form.show_prob'} eq 'true') {
1842: $showprob_checkbox .= 'checked ';
1843: }
1844: $showprob_checkbox.= ' />';
1845: $Str.= '<nobr><label>'.
1846: &mt('Show problem [_1]',$showprob_checkbox).
1847: '</label></nobr><br />';
1848: ##
1849: my $analyze_selector = '<select name="AnalyzeOver" >';
1850: $analyze_selector .= '<option value="tries" ';
1851: if (! exists($ENV{'form.AnalyzeOver'}) ||
1852: $ENV{'form.AnalyzeOver'} eq 'tries'){
1853: # Default to tries
1854: $analyze_selector .= ' selected ';
1855: }
1856: $analyze_selector .= '>'.&mt('Tries').'</option>';
1857: $analyze_selector .= '<option value="time" ';
1858: $analyze_selector .= ' selected ' if ($ENV{'form.AnalyzeOver'} eq 'time');
1859: $analyze_selector .= '>'.&mt('Time').'</option>';
1860: $analyze_selector .= '</select>';
1861: $Str .= '<nobr><label>'.
1862: &mt('Analyze Over [_1] [_2]',
1863: $analyze_selector,
1864: &Apache::loncommon::help_open_topic('Analysis_Analyze_Over')).
1865: '</label></nobr><br />'.$/;
1866: ##
1867: my $numplots_selector = '<select name="NumPlots">';
1868: if (! exists($ENV{'form.NumPlots'})
1869: || $ENV{'form.NumPlots'} < 1
1870: || $ENV{'form.NumPlots'} > 20) {
1871: $ENV{'form.NumPlots'} = 5;
1872: }
1873: foreach my $i (1,2,3,4,5,6,7,8,10,15,20) {
1874: $numplots_selector .= '<option value="'.$i.'" ';
1875: if ($ENV{'form.NumPlots'} == $i) { $numplots_selector.=' selected '; }
1876: $numplots_selector .= '>'.$i.'</option>';
1877: }
1878: $numplots_selector .= '</select></nobr><br />';
1879: $Str .= '<nobr><label>'.&mt('Number of Plots [_1]',$numplots_selector).
1880: '</label></nobr>';
1881: ##
1882: $Str .= '<nobr><label>'.&mt('Status: [_1]',
1883: '<input type="text" '.
1884: 'name="stats_status" size="60" value="" />'
1885: ).
1886: '</label></nobr>';
1887: $Str .= '</td>';
1888: ##
1889: ##
1890: $Str .= '</tr>'."\n";
1891: $Str .= '</table>'."\n";
1892: return $Str;
1893: }
1894:
1895: #########################################################
1896: #########################################################
1897: ##
1898: ## Misc Option Response functions
1899: ##
1900: #########################################################
1901: #########################################################
1902: sub get_time_from_row {
1903: my ($row) = @_;
1904: if (ref($row)) {
1905: return $row->[&Apache::loncoursedata::RD_timestamp()];
1906: }
1907: return undef;
1908: }
1909:
1910: sub get_tries_from_row {
1911: my ($row) = @_;
1912: if (ref($row)) {
1913: return $row->[&Apache::loncoursedata::RD_tries()];
1914: }
1915: return undef;
1916: }
1917:
1918: sub hashify_attempt {
1919: my ($row) = @_;
1920: my %attempt;
1921: $attempt{'student'} = $row->[&Apache::loncoursedata::RD_sname()];
1922: $attempt{'tries'} = $row->[&Apache::loncoursedata::RD_tries()];
1923: $attempt{'submission'} = &Apache::lonnet::unescape($row->[&Apache::loncoursedata::RD_submission()]);
1924: $attempt{'award'} = $row->[&Apache::loncoursedata::RD_awarddetail()];
1925: $attempt{'timestamp'} = $row->[&Apache::loncoursedata::RD_timestamp()];
1926: return %attempt;
1927: }
1928:
1929: sub Process_OR_Row {
1930: my ($row) = @_;
1931: my %RowData;
1932: # my $student_id = $row->[&Apache::loncoursedata::RD_student_id()];
1933: my $award = $row->[&Apache::loncoursedata::RD_awarddetail()];
1934: my $grading = $row->[&Apache::loncoursedata::RD_response_eval()];
1935: my $submission = $row->[&Apache::loncoursedata::RD_submission()];
1936: my $time = $row->[&Apache::loncoursedata::RD_timestamp()];
1937: # my $tries = $row->[&Apache::loncoursedata::RD_tries()];
1938: return undef if ($award eq 'MISSING_ANSWER');
1939: if (&submission_is_correct($award)) {
1940: $RowData{'_correct'} = 1;
1941: }
1942: $RowData{'_total'} = 1;
1943: my @Foilgrades = split('&',$grading);
1944: my @Foilsubs = split('&',$submission);
1945: for (my $j=0;$j<=$#Foilgrades;$j++) {
1946: my ($foilid,$correct) = split('=',$Foilgrades[$j]);
1947: $foilid = &Apache::lonnet::unescape($foilid);
1948: my (undef,$submission) = split('=',$Foilsubs[$j]);
1949: if ($correct) {
1950: $RowData{$foilid}->{'_correct'}++;
1951: } else {
1952: $submission = &Apache::lonnet::unescape($submission);
1953: $RowData{$foilid}->{$submission}++;
1954: }
1955: $RowData{$foilid}->{'_total'}++;
1956: }
1957: return %RowData;
1958: }
1959:
1960: sub submission_is_correct {
1961: my ($award) = @_;
1962: if ($award =~ /(APPROX_ANS|EXACT_ANS)/) {
1963: return 1;
1964: } else {
1965: return 0;
1966: }
1967: }
1968:
1969: 1;
1970:
1971: __END__
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