1: # The LearningOnline Network with CAPA
2: #
3: # $Id: lonproblemanalysis.pm,v 1.113 2005/02/22 05:28:21 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('<hr />');
101: $r->rflush();
102: #
103: # Determine which problem we are to analyze
104: my $current_problem = &Apache::lonstathelpers::get_target_from_id
105: ($ENV{'form.problemchoice'});
106: #
107: my ($prev,$curr,$next) =
108: &Apache::lonstathelpers::get_prev_curr_next($current_problem,
109: $problem_types,
110: 'response',
111: );
112: if (exists($ENV{'form.PrevProblemAnalysis'}) && defined($prev)) {
113: $current_problem = $prev;
114: } elsif (exists($ENV{'form.NextProblemAnalysis'}) && defined($next)) {
115: $current_problem = $next;
116: } else {
117: $current_problem = $curr;
118: }
119: #
120: # Store the current problem choice and send it out in the form
121: $ENV{'form.problemchoice'} =
122: &Apache::lonstathelpers::make_target_id($current_problem);
123: $r->print('<input type="hidden" name="problemchoice" value="'.
124: $ENV{'form.problemchoice'}.'" />');
125: #
126: if (! defined($current_problem->{'resource'})) {
127: $r->print('resource is undefined');
128: } else {
129: my $resource = $current_problem->{'resource'};
130: $r->print('<h1>'.$resource->{'title'}.'</h1>');
131: $r->print('<h3>'.$resource->{'src'}.'</h3>');
132: if ($ENV{'form.show_prob'} eq 'true') {
133: $r->print(&Apache::lonstathelpers::render_resource($resource));
134: }
135: $r->rflush();
136: my %Data = &Apache::lonstathelpers::get_problem_data
137: ($resource->{'src'});
138: my $problem_data = $Data{$current_problem->{'part'}.
139: '.'.
140: $current_problem->{'respid'}};
141: if ($current_problem->{'resptype'} eq 'option') {
142: &OptionResponseAnalysis($r,$current_problem,
143: $problem_data,
144: \@Students);
145: } elsif ($current_problem->{'resptype'} eq 'radiobutton') {
146: &radio_response_analysis($r,$current_problem,
147: $problem_data,
148: \@Students);
149: } elsif ($current_problem->{'resptype'} eq 'numerical') {
150: &numerical_response_analysis($r,$current_problem,
151: $problem_data,\@Students);
152: } else {
153: $r->print('<h2>Analysis of '.$current_problem->{'resptype'}.' is not supported</h2>');
154: }
155: }
156: $r->print('<hr />');
157: } else {
158: $r->print('<input type="submit" name="ProblemAnalysis" value="'.
159: &mt('Analyze Problem').'" />');
160: $r->print(' 'x5);
161: $r->print('<h3>'.&mt('Please select a problem to analyze').'</h3>');
162: $r->print(&Apache::lonstathelpers::ProblemSelector
163: ($problem_types));
164: }
165: }
166:
167: #########################################################
168: #########################################################
169: ##
170: ## Numerical Response Routines
171: ##
172: #########################################################
173: #########################################################
174: sub numerical_response_analysis {
175: my ($r,$problem,$problem_analysis,$students) = @_;
176: my $c = $r->connection();
177: #
178: if ($ENV{'form.AnalyzeOver'} !~ /^(tries|time)$/) {
179: $r->print('Bad request');
180: }
181: #
182: my ($resource,$partid,$respid) = ($problem->{'resource'},
183: $problem->{'part'},
184: $problem->{'respid'});
185: # Gather student data
186: my $response_data = &Apache::loncoursedata::get_response_data
187: (\@Apache::lonstatistics::SelectedSections,
188: $Apache::lonstatistics::enrollment_status,
189: $resource->{'symb'},$respid);
190: #
191: $problem_analysis->{'answercomputed'} = 1;
192: if ($problem_analysis->{'answercomputed'}) {
193: my $answers =
194: &Apache::lonstathelpers::GetStudentAnswers($r,$problem,$students,
195: 'Statistics',
196: 'stats_status');
197: $r->print(&numerical_one_dimensional_plot($r,600,150,$answers));
198: }
199: #
200: if (ref($response_data) ne 'ARRAY') {
201: $r->print('<h2>'.
202: &mt('There is no submission data for this resource').
203: '</h2>');
204: return;
205: }
206: my $analysis_html = '<table>';
207: for (my $plot_num = 1;$plot_num<=$ENV{'form.NumPlots'};$plot_num++) {
208: my $restriction_function;
209: my $header_message;
210: my $stats_message;
211: my $post_message; # passed through &mt sooner rather than later
212: my $no_data_message;
213: my @extra_data;
214: if ($ENV{'form.AnalyzeOver'} eq 'tries') {
215: $restriction_function = sub {($_[0]->{'tries'} == $plot_num?1:0)};
216: $header_message = 'Attempt [_1]';
217: $stats_message =
218: '[_1] submissions, [_2] correct, [_3] incorrect';
219: $post_message = '';
220: $no_data_message = 'No data exists for attempt [_1]';
221: } else {
222: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
223: ('startdate_'.$plot_num);
224: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
225: ('enddate_'.$plot_num);
226: ($starttime,$endtime) = &ensure_start_end_times
227: ($starttime,$endtime,
228: &get_time_from_row($response_data->[0]),
229: &get_time_from_row($response_data->[-1]),
230: $plot_num);
231: $header_message = 'Data from [_2] to [_3]';
232: $extra_data[0] = &Apache::lonlocal::locallocaltime($starttime);
233: $extra_data[1] = &Apache::lonlocal::locallocaltime($endtime);
234: #
235: $stats_message =
236: '[_1] submissions from [_4] students, [_2] correct, [_3] incorrect';
237: #
238: $post_message =
239: &mt('Start time: [_1]',
240: &Apache::lonhtmlcommon::date_setter
241: ('Statistics','startdate_'.$plot_num,$starttime)).
242: '<br />'.
243: &mt('End time: [_1]',
244: &Apache::lonhtmlcommon::date_setter
245: ('Statistics','enddate_'.$plot_num,$endtime));
246: $restriction_function =
247: sub {
248: my $t = $_[0]->{'timestamp'};
249: if ($t >= $starttime && $t < $endtime) {
250: return 1;
251: } else {
252: return 0;
253: }
254: };
255: $no_data_message = 'No data for [_2] to [_3]';
256: }
257: #
258: my ($correct,$answers) =
259: &numerical_determine_answers($r,$resource,$partid,
260: $respid,$students);
261: if ($c->aborted()) { return; };
262: #
263: my ($responses,$stats) =
264: &numerical_classify_responses($response_data,$correct,
265: $restriction_function);
266: if ($stats->{'submission_count'} == 0) {
267: $analysis_html.=
268: '<tr><td colspan="2"><font size="+1"><b>'.
269: &mt($no_data_message,$plot_num,@extra_data).
270: '</b></font></td></tr>';
271: } else {
272: $analysis_html.=
273: '<tr><td colspan="2" align="center"><font size="+1"><b>'.
274: &mt($header_message,$plot_num,@extra_data).
275: '</b></font></td></tr>'.
276: '<tr><td colspan="2" align="center">'.
277: &mt($stats_message,
278: $stats->{'submission_count'},
279: $stats->{'correct_count'},
280: $stats->{'incorrect_count'},
281: $stats->{'students'},
282: @extra_data).
283: '</td></tr>'.
284: '<tr>'.'<td valign="top" align="center">'.
285: &numerical_plot_percent($r,$responses,$stats).'</td>'.
286: '<td align="center" valign="top">'.
287: &numerical_plot_differences($r,$responses,$stats).'</td>'.
288: '</tr>';
289: }
290: if ($post_message ne '') {
291: $analysis_html .=
292: '<tr><td colspan="2">'.$post_message.'</td></tr>';
293: }
294: }
295: $analysis_html.='</table>';
296: $r->print($analysis_html);
297: #
298: return;
299: }
300:
301: sub numerical_plot_percent {
302: my ($r,$responses,$stats) = @_;
303: #
304: my $total = $stats->{'submission_count'};
305: return '' if ($total == 0);
306: my $min_bin_size = $stats->{'min_percent'};
307: my $low_bin = $stats->{'lowest_ans'}-$stats->{'max_bin_size'};
308: my $high_bin = $stats->{'highest_ans'}+$stats->{'max_bin_size'};
309: if ($high_bin > 0 && $low_bin > -$high_bin) {
310: $low_bin = -$high_bin;
311: } elsif ($low_bin < 0 && $high_bin < -$low_bin) {
312: $high_bin = -$low_bin;
313: }
314: if (($high_bin -$low_bin)/$min_bin_size > 1000) {
315: $min_bin_size = abs($high_bin - $low_bin) / 1000;
316: }
317: my @bins;
318: for (my $num = $low_bin;$num <= $high_bin;$num+=($min_bin_size/2)) {
319: push(@bins,$num);
320: }
321: #
322: my @correct;
323: my @incorrect;
324: my @count;
325: while (my ($ans,$submissions) = each(%$responses)) {
326: while (my ($submission,$counts) = each(%$submissions)) {
327: my ($correct_count,$incorrect_count) = @$counts;
328: my $scaled_value = ($submission-$ans)/$ans;
329: my $bin=0;
330: for ($bin=0;$bin<$#bins;$bin++) { # not <= for a reason
331: last if ($bins[$bin]>$scaled_value);
332: }
333: $correct[$bin]+=$correct_count;
334: $incorrect[$bin]+=$incorrect_count;
335: $count[$bin]+=$correct_count+$incorrect_count;
336: }
337: }
338: #
339: # Skip empty bins
340: my (@plot_correct,@plot_incorrect,@new_bins,@new_count);
341: my $min_skip = 2;
342: for (my $i=0;$i<=$#bins;$i++) {
343: my $sum=0;
344: for (my $j=-$min_skip;$j<=$min_skip && $i+$j<=$#bins;$j++) {
345: $sum += $correct[$i+$j] + $incorrect[$i+$j];
346: }
347: if ($sum) {
348: push(@new_bins,$bins[$i]);
349: push(@plot_correct,$correct[$i]);
350: push(@plot_incorrect,$incorrect[$i]);
351: push(@new_count,$correct[$i]+$incorrect[$i]);
352: }
353: }
354: @correct = @plot_correct;
355: @incorrect = @plot_incorrect;
356: @count = @new_count;
357: @bins = @new_bins;
358: for (my $i=0;$i<=$#bins;$i++) {
359: $plot_correct[$i] *= 100/$total;
360: $plot_incorrect[$i] *= 100/$total;
361: }
362: #
363: my $title = &mt('Percent Difference');
364: my @labels = (1..scalar(@bins));
365: my $graph = &Apache::loncommon::DrawBarGraph
366: ($title,'Percent difference from correct','Number of answers',
367: 100,['#33FF00','#FF3300'],\@labels,\@plot_correct,\@plot_incorrect,
368: {xskip=>1});
369: #
370: my $table = $graph.$/.
371: &numerical_bin_table(\@bins,\@labels,\@incorrect,\@correct,\@count).$/;
372: return $table;
373: }
374:
375: sub numerical_plot_differences {
376: my ($r,$responses,$stats) = @_;
377: #
378: my $total = $stats->{'submission_count'};
379: return '' if ($total == 0);
380: my $max_bins = 50;
381: my $min_bin_size = $stats->{'min_abs'};
382: my $low_bin = $stats->{'lowest_ans'}-$stats->{'max_bin_size'};
383: my $high_bin = $stats->{'highest_ans'}+$stats->{'max_bin_size'};
384: if ($high_bin > 0 && $low_bin > -$high_bin) {
385: $low_bin = -$high_bin;
386: } elsif ($low_bin < 0 && $high_bin < -$low_bin) {
387: $high_bin = -$low_bin;
388: }
389: if (($high_bin -$low_bin)/$min_bin_size * 2 > $max_bins) {
390: $min_bin_size = abs($high_bin - $low_bin) / $max_bins * 2;
391: }
392: my @bins;
393: for (my $num = $low_bin;$num <= $high_bin;$num+=($min_bin_size/2)) {
394: push(@bins,$num);
395: }
396: #
397: my @correct;
398: my @incorrect;
399: my @count;
400: while (my ($ans,$submissions) = each(%$responses)) {
401: while (my ($submission,$counts) = each(%$submissions)) {
402: my ($correct_count,$incorrect_count) = @$counts;
403: my $scaled_value = $submission-$ans;
404: my $bin=0;
405: for ($bin=0;$bin<$#bins;$bin++) { # not <= for a reason
406: last if ($bins[$bin]>$scaled_value);
407: }
408: $correct[$bin]+=$correct_count;
409: $incorrect[$bin]+=$incorrect_count;
410: $count[$bin]+=$correct_count+$incorrect_count;
411: }
412: }
413: my @plot_correct = @correct;
414: my @plot_incorrect = @incorrect;
415: for (my $i=0;$i<=$#bins;$i++) {
416: $plot_correct[$i] *= 100/$total;
417: $plot_incorrect[$i] *= 100/$total;
418: }
419: #
420: my $title = &mt('Difference between submission and correct');
421: my @labels = (1..scalar(@bins));
422: my $graph = &Apache::loncommon::DrawBarGraph
423: ($title,'Difference from Correct','Number of answers',
424: 100,['#33FF00','#FF3300'],\@labels,\@plot_correct,\@plot_incorrect,
425: {xskip=>1});
426: #
427: my $table = $graph.$/.
428: &numerical_bin_table(\@bins,\@labels,\@incorrect,\@correct,\@count).$/;
429: return $table;
430: }
431:
432: sub numerical_classify_responses {
433: my ($full_row_data,$correct,$function) = @_;
434: my %submission_data;
435: my %students;
436: my %stats;
437: my $max=0;
438: foreach my $row (@$full_row_data) {
439: my %subm = &hashify_attempt($row);
440: if (ref($correct) eq 'HASH') {
441: my $s_correct = $correct->{$subm{'student'}};
442: $subm{'correct'} = $s_correct->{'answer'};
443: foreach my $item ('unit','ans_low','ans_high') {
444: $subm{$item} = $s_correct->{$item};
445: }
446: } else { # This probably never happens....
447: $subm{'correct'} = $correct->{'answer'};
448: $subm{'unit'} = $correct->{'unit'};
449: }
450: #
451: my $abs_low =abs($subm{'correct'}-$subm{'ans_low'});
452: my $abs_high=abs($subm{'correct'}-$subm{'ans_high'});
453: if (! defined($stats{'min_abs'}) ||
454: $stats{'min_abs'} > $abs_low) {
455: $stats{'min_abs'} = $abs_low;
456: }
457: if ($stats{'min_abs'} > $abs_high) {
458: $stats{'min_abs'} = $abs_high;
459: }
460: if (! defined($stats{'max_abs'}) ||
461: $stats{'max_abs'} < $abs_low) {
462: $stats{'max_abs'} = $abs_low;
463: }
464: if ($stats{'max_abs'} < $abs_high) {
465: $stats{'max_abs'} = $abs_high;
466: }
467: my $low_percent = 100 * abs($abs_low / $subm{'correct'});
468: my $high_percent = 100 * abs($abs_high / $subm{'correct'});
469: if (! defined($stats{'min_percent'}) ||
470: $stats{'min_percent'} > $low_percent) {
471: $stats{'min_percent'} = $low_percent;
472: }
473: if ($stats{'min_percent'} > $high_percent) {
474: $stats{'min_percent'} = $high_percent;
475: }
476: if (! defined($stats{'max_percent'}) ||
477: $stats{'max_percent'} < $low_percent) {
478: $stats{'max_percent'} = $low_percent;
479: }
480: if ($stats{'max_percent'} < $high_percent) {
481: $stats{'max_percent'} = $high_percent;
482: }
483: if (! defined($stats{'lowest_ans'}) ||
484: $stats{'lowest_ans'} > $subm{'correct'}) {
485: $stats{'lowest_ans'} = $subm{'correct'};
486: }
487: if (! defined($stats{'highest_ans'}) ||
488: $stats{'highest_ans'} < $subm{'correct'}) {
489: $stats{'highest_ans'} = $subm{'correct'};
490: }
491: #
492: $subm{'submission'} =~ s/=\d+\s*$//;
493: if (&$function(\%subm)) {
494: my $scaled = '1';
495: my ($sname,$sdom) = split(':',$subm{'student'});
496: my ($myunit,$mysub) = ($subm{'unit'},$subm{'submission'});
497: my $result =
498: &capa::caparesponse_get_real_response($myunit,
499: $mysub,
500: \$scaled);
501: &Apache::lonnet::logthis('scaled = '.$scaled.' result ='.$result);
502: next if (! defined($scaled));
503: # next if ($result ne '6');
504: my $submission = $scaled;
505: $students{$subm{'student'}}++;
506: $stats{'submission_count'}++;
507: if (&numerical_submission_is_correct($subm{'award'})) {
508: $stats{'correct_count'}++;
509: $submission_data{$subm{'correct'}}->{$submission}->[0]++;
510: } elsif (&numerical_submission_is_incorrect($subm{'award'})) {
511: $stats{'incorrect_count'}++;
512: $submission_data{$subm{'correct'}}->{$submission}->[1]++;
513: }
514: }
515: }
516: $stats{'students'}=scalar(keys(%students));
517: return (\%submission_data,\%stats);
518: }
519:
520: sub numerical_submission_is_correct {
521: my ($award) = @_;
522: if ($award =~ /^(APPROX_ANS|EXACT_ANS)$/) {
523: return 1;
524: } else {
525: return 0;
526: }
527: }
528:
529: sub numerical_submission_is_incorrect {
530: my ($award) = @_;
531: if ($award =~ /^(INCORRECT)$/) {
532: return 1;
533: } else {
534: return 0;
535: }
536: }
537:
538: sub numerical_bin_table {
539: my ($bins,$labels,$incorrect,$correct,$count)=@_;
540: my $table =
541: '<table><tr><th>'.&mt('Bar').'</th>'.
542: '<th colspan="3">'.&mt('Range').'</th>'.
543: '<th>'.&mt('Incorrect').'</th>'.
544: '<th>'.&mt('Correct').'</th>'.
545: '<th>'.&mt('Count').'</th>'.
546: '</tr>'.$/;
547: for (my $i=0;$i<scalar(@{$bins}-1);$i++) {
548: my $lownum = $bins->[$i];
549: my $highnum = $bins->[$i+1];
550: $table .=
551: '<tr>'.
552: '<td>'.$labels->[$i].'</td>'.
553: '<td align="right">'.$lownum.'</td>'.
554: '<td> - </td>'.
555: '<td align="right">'.$highnum.'</td>'.
556: '<td align="right">'.$incorrect->[$i].'</td>'.
557: '<td align="right">'.$correct->[$i].'</td>'.
558: '<td align="right">'.$count->[$i].'</td>'.
559: '</tr>'.$/;
560: }
561: $table.= '</table>';
562: return $table;
563: }
564:
565: sub numerical_determine_answers {
566: my ($r,$resource,$partid,$respid,$students)=@_;
567: my $c = $r->connection();
568: #
569: my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin
570: ($r,'Student Answer Compilation Status',
571: 'Student Answer Compilation Progress', scalar(@$students),
572: 'inline',undef,'Statistics','stats_status');
573: #
574: # Read in the cache (if it exists) before we start timing things.
575: &Apache::lonstathelpers::ensure_proper_cache($resource->{'symb'});
576: #
577: my $correct;
578: my %answers;
579: foreach my $student (@$students) {
580: last if ($c->aborted());
581: my $sname = $student->{'username'};
582: my $sdom = $student->{'domain'};
583: # analyze problem
584: my $analysis =
585: &Apache::lonstathelpers::analyze_problem_as_student($resource,
586: $sname,
587: $sdom);
588: # make the key
589: my $key = $partid.'.'.$respid;
590: foreach my $item ('answer','unit','ans_high','ans_low') {
591: $correct->{$sname.':'.$sdom}->{$item} =
592: $analysis->{$key.'.'.$item}->[0];
593: }
594: $answers{$analysis->{$key.'.answer'}->[0]}++;
595: &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
596: &mt('last student'));
597: }
598: &Apache::lonstathelpers::write_analysis_cache();
599: &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
600: return ($correct,\%answers);
601: }
602:
603: #
604: # Inputs: $r, $width, $height, $data
605: # $n = number of students
606: # $data = hashref of $answer => $frequency pairs
607: sub numerical_one_dimensional_plot {
608: my ($r,$width,$height,$data)=@_;
609: #
610: # Compute data -> image scaling factors
611: my $max_y = 0;
612: my $min_x = undef;
613: my $max_x = undef;
614: my $n = 0;
615: while (my ($answer,$count) = each(%$data)) {
616: $n+=$count;
617: $max_y = $count if ($max_y < $count);
618: if (! defined($min_x) || $answer < $min_x) {
619: $min_x = $answer;
620: }
621: if (! defined($max_x) || $answer > $max_x) {
622: $max_x = $answer;
623: }
624: }
625: #
626: my $min_max_difference = $max_x - $min_x;
627: if (! defined($min_max_difference) || $min_max_difference == 0) {
628: $min_max_difference = 1;
629: }
630: my $h_scale = ($width-10)/$min_max_difference;
631: #
632: my $ticscale = 5;
633: if ($max_y * $ticscale > $height/2) {
634: $ticscale = int($height/2/$max_y);
635: $ticscale = 1 if ($ticscale < 1);
636: }
637: #
638: # Create the plot
639: my $plot =
640: qq{<drawimage width="$width" height="$height" bgcolor="transparent" >};
641: while (my ($answer,$count) = each(%$data)) {
642: my $xloc = 5+$h_scale*($answer - $min_x);
643: my $top = $height/2-$count*$ticscale;
644: my $bottom = $height/2+$count*$ticscale;
645: $plot .= &line($xloc,$top,$xloc,$bottom,'888888',1);
646: }
647: #
648: # Put the scale on last to ensure it is on top of the data.
649: if ($min_x < 0 && $max_x > 0) {
650: my $circle_x = 5+$h_scale*abs($min_x); # '0' in data coordinates
651: my $r = 4;
652: $plot .= &line(5,$height/2,$circle_x-$r,$height/2,'000000',1);
653: $plot .= &circle($circle_x,$height/2,$r+1,'000000');
654: $plot .= &line($circle_x+$r,$height/2,$width-5,$height/2,'000000',1);
655: } else {
656: $plot .= &line(5,$height/2,$width-5,$height/2,'000000',1);
657: }
658: $plot .= '</drawimage>';
659: my $plotresult = &Apache::lonxml::xmlparse($r,'web',$plot);
660: my $result = '<table>'.
661: '<tr><td colspan="3" align="center">'.
662: '<font size="+2">'.&mt('Distribution of correct answers').'</font>'.
663: '<br />'.&mt('[_1] students, [_2] distinct correct answers',
664: $n,scalar(keys(%$data))).
665: '<br />'.&mt('Maximum number of coinciding values: [_1]',$max_y).
666: '</td></tr>'.
667: '<tr>'.
668: '<td valign="center">'.$min_x.'</td>'.
669: '<td>'.$plotresult.'</td>'.
670: '<td valign="center">'.$max_x.'</td>'.
671: '</tr>'.
672: '</table>';
673: return $result;
674: }
675:
676: ##
677: ## Helper subroutines for <drawimage>.
678: ## These should probably go somewhere more suitable soon.
679: sub line {
680: my ($x1,$y1,$x2,$y2,$color,$thickness) = @_;
681: return qq{<line x1="$x1" y1="$y1" x2="$x2" y2="$y2" color="$color" thickness="$thickness" />};
682: }
683:
684: sub text {
685: my ($x,$y,$color,$text,$font,$direction) = @_;
686: if (! defined($font) || $font !~ /^(tiny|small|medium|large|giant)$/) {
687: $font = 'medium';
688: }
689: if (! defined($direction) || $direction ne 'vertical') {
690: $direction = '';
691: }
692: return qq{<text x="$x" y="$y" color="$color" font="$font" direction="$direction" >$text</text>};
693: }
694:
695: sub rectangle {
696: my ($x1,$y1,$x2,$y2,$color,$thickness,$filled) = @_;
697: return qq{<rectangle x1="$x1" y1="$y1" x2="$x2" y2="$y2" color="$color" thickness="$thickness" filled="$filled" />};
698: }
699:
700: sub arc {
701: my ($x,$y,$width,$height,$start,$end,$color,$thickness,$filled)=@_;
702: return qq{<arc x="$x" y="$y" width="$width" height="$height" start="$start" end="$end" color="$color" thickness="$thickness" filled="$filled" />};
703: }
704:
705: sub circle {
706: my ($x,$y,$radius,$color,$thickness,$filled)=@_;
707: return &arc($x,$y,$radius,$radius,0,360,$color,$thickness,$filled);
708: }
709:
710: #########################################################
711: #########################################################
712: ##
713: ## Radio Response Routines
714: ##
715: #########################################################
716: #########################################################
717: sub radio_response_analysis {
718: my ($r,$problem,$problem_analysis,$students) = @_;
719: #
720: if ($ENV{'form.AnalyzeOver'} !~ /^(tries|time)$/) {
721: $r->print('Bad request');
722: }
723: #
724: my ($resource,$partid,$respid) = ($problem->{'resource'},
725: $problem->{'part'},
726: $problem->{'respid'});
727: #
728: my $analysis_html;
729: my $foildata = $problem_analysis->{'_Foils'};
730: my ($table,$foils,$concepts) = &build_foil_index($problem_analysis);
731: if (! defined($concepts)) {
732: $concepts = [];
733: }
734: #
735: my %true_foils;
736: my $num_true = 0;
737: if (! $problem_analysis->{'answercomputed'}) {
738: foreach my $foil (@$foils) {
739: if ($foildata->{$foil}->{'value'} eq 'true') {
740: $true_foils{$foil}++;
741: }
742: }
743: $num_true = scalar(keys(%true_foils));
744: }
745: #
746: $analysis_html .= $table;
747: # Gather student data
748: my $response_data = &Apache::loncoursedata::get_response_data
749: (\@Apache::lonstatistics::SelectedSections,
750: $Apache::lonstatistics::enrollment_status,
751: $resource->{'symb'},$respid);
752: my $correct; # either a hash reference or a scalar
753: if ($problem_analysis->{'answercomputed'} || scalar(@$concepts) > 1) {
754: # This takes a while for large classes...
755: &Apache::lonstathelpers::GetStudentAnswers($r,$problem,$students,
756: 'Statistics',
757: 'stats_status');
758: foreach my $student (@$students) {
759: my ($idx,@remainder) = split('&',$student->{'answer'});
760: my ($answer) = ($remainder[$idx]=~/^(.*)=([^=]*)$/);
761: $correct->{$student->{'username'}.':'.$student->{'domain'}}=
762: &Apache::lonnet::unescape($answer);
763: }
764: } else {
765: foreach my $foil (keys(%$foildata)) {
766: if ($foildata->{$foil}->{'value'} eq 'true') {
767: $correct = $foildata->{$foil}->{'name'};
768: }
769: }
770: }
771: #
772: if (! defined($response_data) || ref($response_data) ne 'ARRAY' ) {
773: $analysis_html = '<h2>'.
774: &mt('There is no submission data for this resource').
775: '</h2>';
776: $r->print($analysis_html);
777: return;
778: }
779: #
780: $analysis_html.='<table>';
781: for (my $plot_num = 1;$plot_num<=$ENV{'form.NumPlots'};$plot_num++) {
782: # classify data ->correct foil -> selected foil
783: my ($restriction_function,
784: $correct_foil_title,$incorrect_foil_title,
785: $pre_graph_text,$post_graph_text,
786: $no_data_text,@extra_data);
787: if ($ENV{'form.AnalyzeOver'} eq 'tries') {
788: $restriction_function = sub {($_[0]->{'tries'} == $plot_num?1:0)};
789: $correct_foil_title = 'Attempt '.$plot_num;
790: $incorrect_foil_title = 'Attempt '.$plot_num;
791: $pre_graph_text =
792: 'Attempt [_1], [_2] submissions, [_3] correct, [_4] incorrect';
793: $post_graph_text = '';
794: $no_data_text = 'No data exists for attempt [_1]';
795: } elsif ($ENV{'form.AnalyzeOver'} eq 'time') {
796: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
797: ('startdate_'.$plot_num);
798: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
799: ('enddate_'.$plot_num);
800: ($starttime,$endtime) = &ensure_start_end_times
801: ($starttime,$endtime,
802: &get_time_from_row($response_data->[0]),
803: &get_time_from_row($response_data->[-1]),
804: $plot_num);
805: $pre_graph_text =
806: 'Data from [_6] to [_7]<br /> [_2] submissions from [_5] students, [_3] correct, [_4] incorrect';
807: $extra_data[0] = &Apache::lonlocal::locallocaltime($starttime);
808: $extra_data[1] = &Apache::lonlocal::locallocaltime($endtime);
809: #
810: $post_graph_text =
811: &mt('Start time: [_1]',
812: &Apache::lonhtmlcommon::date_setter
813: ('Statistics','startdate_'.$plot_num,$starttime)).
814: '<br />'.
815: &mt('End time: [_1]',
816: &Apache::lonhtmlcommon::date_setter
817: ('Statistics','enddate_'.$plot_num,$endtime));
818: $restriction_function =
819: sub {
820: my $t = $_[0]->{'timestamp'};
821: if ($t >= $starttime && $t < $endtime) {
822: return 1;
823: } else {
824: return 0;
825: }
826: };
827: $no_data_text = 'No data for [_5] to [_6]';
828: }
829: my $foil_choice_data =
830: &classify_response_data($response_data,$correct,
831: $restriction_function);
832: # &Apache::lonstathelpers::log_hash_ref($foil_choice_data);
833: my $answers;
834: if (ref($correct)) {
835: my %tmp;
836: foreach my $foil (values(%$correct)) {
837: $tmp{$foil}++;
838: }
839: $answers = [keys(%tmp)];
840: } else {
841: $answers = [$correct];
842: }
843: # Concept Plot
844: my $concept_plot = '';
845: if (scalar(@$concepts) > 1) {
846: $concept_plot = &RR_concept_plot($concepts,$foil_choice_data,
847: 'Correct Concepts');
848: }
849: # % Choosing plot
850: my $choice_plot = &RR_create_percent_selected_plot
851: ($concepts,$foils,$foil_choice_data,$correct_foil_title);
852: # for each correct foil, how did they mark it? (stacked bar graph)
853: my ($stacked_plot,$count_by_foil);
854: if ($problem_analysis->{'answercomputed'} || $num_true > 1) {
855: ($stacked_plot,$count_by_foil) =
856: &RR_create_stacked_selection_plot($foils,$foil_choice_data,
857: $incorrect_foil_title,
858: \%true_foils);
859: }
860: #
861: if ($concept_plot ne '' ||
862: $choice_plot ne '' ||
863: $stacked_plot ne '') {
864: my $correct = $foil_choice_data->{'_correct'};
865: if (! defined($correct) || $correct eq '') {
866: $correct = 0;
867: }
868: my $incorrect =
869: $analysis_html.= '<tr><td colspan="4" align="center">'.
870: '<font size="+1">'.
871: &mt($pre_graph_text,
872: $plot_num,$foil_choice_data->{'_count'},
873: $correct,
874: $foil_choice_data->{'_count'}-$correct,
875: $foil_choice_data->{'_students'},
876: @extra_data).
877: '</td></tr>'.$/;
878: $analysis_html.=
879: '<tr>'.
880: '<td>'.$concept_plot.'</td>'.
881: '<td>'.$choice_plot.'</td>';
882: if ($stacked_plot ne '') {
883: $analysis_html .=
884: '<td>'.$stacked_plot.'</td>'.
885: '<td>'.&build_foil_key($foils,$count_by_foil).'</td>';
886: } else {
887: $analysis_html .= ('<td></td>'x2);
888: }
889: $analysis_html.='</tr>'.$/;
890: if (defined($post_graph_text)) {
891: $analysis_html.= '<tr><td colspan="4" align="center">'.
892: $post_graph_text.'</td></tr>'.$/;
893: }
894: } elsif ($no_data_text ne '') {
895: $analysis_html.='<tr><td colspan="4" align="center">'.
896: &mt($no_data_text,
897: $plot_num,$foil_choice_data->{'_count'},
898: $correct,
899: $foil_choice_data->{'_count'}-$correct,
900: @extra_data);
901: if (defined($post_graph_text)) {
902: $analysis_html.='<br />'.$post_graph_text;
903: }
904: $analysis_html.='</td></tr>'.$/;
905: }
906: } # end of loop for plots
907: $analysis_html.='</table>';
908: $r->print($analysis_html);
909: }
910:
911: sub ensure_start_end_times {
912: my ($start,$end,$first,$last,$plot_num) = @_;
913: if (! defined($start) || ! defined($end)) {
914: my $sec_in_day = 86400;
915: my ($sday,$smon,$syear) =
916: (localtime($last - $sec_in_day*($plot_num-1)))[3..5];
917: $start = &Time::Local::timelocal(0,0,0,$sday,$smon,$syear);
918: $end = $start + $sec_in_day;
919: if ($plot_num == $ENV{'form.NumPlots'}) {
920: $start = $first;
921: }
922: }
923: return ($start,$end);
924: }
925:
926: sub RR_concept_plot {
927: my ($concepts,$foil_data,$title) = @_;
928: #
929: my %correct_by_concept;
930: my %incorrect_by_concept;
931: my %true;
932: foreach my $concept (@$concepts) {
933: foreach my $foil (@{$concept->{'foils'}}) {
934: next if (! exists($foil_data->{$foil}));
935: foreach my $choice (keys(%{$foil_data->{$foil}})) {
936: if ($choice eq $foil) {
937: $correct_by_concept{$concept->{'name'}} +=
938: $foil_data->{$foil}->{$choice};
939: } else {
940: $incorrect_by_concept{$concept->{'name'}} +=
941: $foil_data->{$foil}->{$choice};
942: }
943: }
944: }
945: }
946: #
947: # need arrays for incorrect and correct because we want to use different
948: # colors for them
949: my @correct;
950: #
951: my $total =0;
952: for (my $i=0;$i<scalar(@$concepts);$i++) {
953: my $concept = $concepts->[$i];
954: $correct[$i] = $correct_by_concept{$concept->{'name'}};
955: $total += $correct_by_concept{$concept->{'name'}}+
956: $incorrect_by_concept{$concept->{'name'}};
957: }
958: if ($total == 0) { return ''; };
959: for (my $i=0;$i<=$#correct;$i++) {
960: $correct[$i] = sprintf('%0f',$correct[$i]/$total*100);
961: }
962: my $xlabel = 'concept';
963: my $plot= &Apache::loncommon::DrawBarGraph($title,
964: $xlabel,
965: 'Percent Choosing',
966: 100,
967: ['#33ff00','#ff3300'],
968: undef,
969: \@correct);
970: return $plot;
971: }
972:
973: sub RR_create_percent_selected_plot {
974: my ($concepts,$foils,$foil_data,$title) = @_;
975: #
976: if ($foil_data->{'_count'} == 0) { return ''; };
977: my %correct_selections;
978: my %incorrect_selections;
979: foreach my $foil (@$foils) {
980: # foil_data has format $foil_data->{true_foil}->{selected foil}=count
981: next if (! exists($foil_data->{$foil}));
982: while (my ($f,$count)= each(%{$foil_data->{$foil}})) {
983: if ($f eq $foil) {
984: $correct_selections{$foil} += $count;
985: } else {
986: $incorrect_selections{$f} += $count;
987: }
988: }
989: }
990: #
991: # need arrays for incorrect and correct because we want to use different
992: # colors for them
993: my @correct;
994: my @incorrect;
995: #
996: my $total = $foil_data->{'_count'};
997: for (my $i=0;$i<scalar(@$foils);$i++) {
998: my $foil = $foils->[$i];
999: $correct[$i] = $correct_selections{$foil};
1000: $incorrect[$i] = $incorrect_selections{$foil};
1001: }
1002: for (my $i=0;$i<=$#correct;$i++) {
1003: $correct[$i] = sprintf('%2f',$correct[$i]/$total*100);
1004: }
1005: for (my $i=0;$i<=$#incorrect;$i++) {
1006: $incorrect[$i] = sprintf('%2f',$incorrect[$i]/$total*100);
1007: }
1008: #
1009: # Put a blank in the data sets between concepts, if there are concepts
1010: my @labels;
1011: if (defined($concepts) && scalar(@$concepts) > 1) {
1012: my @new_correct;
1013: my @new_incorrect;
1014: my $foil_count = 0;
1015: foreach my $concept (@$concepts) {
1016: foreach (@{$concept->{'foils'}}) {
1017: push(@new_correct, $correct[$foil_count]);
1018: push(@new_incorrect,$incorrect[$foil_count]);
1019: push(@labels,++$foil_count);
1020: }
1021: push(@new_correct,'');
1022: push(@new_incorrect,'');
1023: push(@labels,'');
1024: }
1025: @correct = @new_correct;
1026: @incorrect = @new_incorrect;
1027: } else {
1028: @labels = (1 .. scalar(@correct));
1029: }
1030: #
1031: my $xlabel = 'foil chosen';
1032: my $plot= &Apache::loncommon::DrawBarGraph($title,
1033: $xlabel,
1034: 'Percent Choosing',
1035: 100,
1036: ['#33ff00','#ff3300'],
1037: \@labels,
1038: \@correct,
1039: \@incorrect);
1040: return $plot;
1041: }
1042:
1043: sub RR_create_stacked_selection_plot {
1044: my ($foils,$foil_data,$title,$true_foils)=@_;
1045: #
1046: my @dataset; # array of array refs - multicolor rows $datasets[row]->[col]
1047: my @labels;
1048: my $count;
1049: my %column; # maps foil name to column in @datasets
1050: for (my $i=0;$i<scalar(@$foils);$i++) {
1051: my $foil = $foils->[$i];
1052: if (defined($true_foils) && scalar(keys(%$true_foils)) > 0 ) {
1053: next if (! $true_foils->{$foil} );
1054: push(@labels,$i+1);
1055: } else {
1056: next if (! exists($foil_data->{$foil}));
1057: push(@labels,$i+1);
1058: }
1059: next if (! exists($foil_data->{$foils->[$i]}));
1060: $column{$foil}= $count++;
1061: for (my $j=0;$j<scalar(@$foils);$j++) {
1062: my $value = 0;
1063: if ($i != $j ) {
1064: $value += $foil_data->{$foil}->{$foils->[$j]};
1065: }
1066: $dataset[$j]->[$column{$foil}]=$value;
1067: }
1068: }
1069: #
1070: return '' if (! scalar(keys(%column)));
1071: #
1072: my $grand_total = 0;
1073: my %count_per_foil;
1074: while (my ($foil,$bar) = each (%column)) {
1075: my $bar_total = 0;
1076: for (my $j=0;$j<scalar(@dataset);$j++) {
1077: $bar_total += $dataset[$j]->[$bar];
1078: }
1079: next if ($bar_total == 0);
1080: for (my $j=0;$j<scalar(@dataset);$j++) {
1081: $dataset[$j]->[$bar] =
1082: sprintf('%2f',$dataset[$j]->[$bar]/$bar_total * 100);
1083: }
1084: $count_per_foil{$foil}=' ( '.$bar_total.' )';
1085: $grand_total += $bar_total;
1086: }
1087: if ($grand_total == 0) {
1088: return ('',undef);
1089: }
1090: my @empty_row = ();
1091: foreach (@{$dataset[0]}) {
1092: push(@empty_row,0);
1093: }
1094: #
1095: my $graph = &Apache::loncommon::DrawBarGraph
1096: ($title,'Correct Foil','foils chosen Incorrectly',
1097: 100,$plotcolors,\@labels,\@empty_row,@dataset);
1098: return ($graph,\%count_per_foil);
1099: }
1100:
1101:
1102: #########################################################
1103: #########################################################
1104: ##
1105: ## Misc routines
1106: ##
1107: #########################################################
1108: #########################################################
1109:
1110: # if $correct is a hash ref, it is assumed to be indexed by student names.
1111: # the values are assumed to be hash refs with a key of 'answer'.
1112: sub classify_response_data {
1113: my ($full_row_data,$correct,$function) = @_;
1114: my %submission_data;
1115: my %students;
1116: my $max=0;
1117: foreach my $row (@$full_row_data) {
1118: my %subm = &hashify_attempt($row);
1119: if (ref($correct) eq 'HASH') {
1120: $subm{'correct'} = $correct->{$subm{'student'}};
1121: } else {
1122: $subm{'correct'} = $correct;
1123: }
1124: $subm{'submission'} =~ s/=\d+\s*$//;
1125: if (&$function(\%subm)) {
1126: $students{$subm{'student'}}++;
1127: $submission_data{'_count'}++;
1128: if (&submission_is_correct($subm{'award'})) {
1129: $submission_data{'_correct'}++;
1130: }
1131:
1132: if($max<++$submission_data{$subm{'correct'}}->{$subm{'submission'}}) {
1133: $max=$submission_data{$subm{'correct'}}->{$subm{'submission'}};
1134: }
1135: }
1136: }
1137: $submission_data{'_max'} = $max;
1138: $submission_data{'_students'}=scalar(keys(%students));
1139: return \%submission_data;
1140: }
1141:
1142:
1143: #########################################################
1144: #########################################################
1145: ##
1146: ## Option Response Routines
1147: ##
1148: #########################################################
1149: #########################################################
1150: sub OptionResponseAnalysis {
1151: my ($r,$problem,$problem_data,$Students) = @_;
1152: my ($resource,$respid) = ($problem->{'resource'},
1153: $problem->{'respid'});
1154: # Note: part data is not needed.
1155: my $PerformanceData = &Apache::loncoursedata::get_response_data
1156: (\@Apache::lonstatistics::SelectedSections,
1157: $Apache::lonstatistics::enrollment_status,
1158: $resource->{'symb'},$respid);
1159: if (! defined($PerformanceData) ||
1160: ref($PerformanceData) ne 'ARRAY' ) {
1161: $r->print('<h2>'.
1162: &mt('There is no student data for this problem.').
1163: '</h2>');
1164: } else {
1165: $r->rflush();
1166: if ($ENV{'form.AnalyzeOver'} eq 'tries') {
1167: my $analysis_html = &OR_tries_analysis($r,
1168: $PerformanceData,
1169: $problem_data);
1170: $r->print($analysis_html);
1171: $r->rflush();
1172: } elsif ($ENV{'form.AnalyzeOver'} eq 'time') {
1173: my $analysis_html = &OR_time_analysis($PerformanceData,
1174: $problem_data);
1175: $r->print($analysis_html);
1176: $r->rflush();
1177: } else {
1178: $r->print('<h2>'.
1179: &mt('The analysis you have selected is '.
1180: 'not supported at this time').
1181: '</h2>');
1182: }
1183: }
1184: }
1185:
1186: #########################################################
1187: #
1188: # Option Response: tries Analysis
1189: #
1190: #########################################################
1191: sub OR_tries_analysis {
1192: my ($r,$PerformanceData,$ORdata) = @_;
1193: my $mintries = 1;
1194: my $maxtries = $ENV{'form.NumPlots'};
1195: my ($table,$Foils,$Concepts) = &build_foil_index($ORdata);
1196: if (! defined($Concepts)) {
1197: $Concepts = [];
1198: }
1199: my %response_data = &OR_analyze_by_tries($r,$PerformanceData,
1200: $mintries,$maxtries);
1201: my $analysis = '';
1202: #
1203: # Compute the data necessary to make the plots
1204: my @foil_plot;
1205: my @concept_data;
1206: for (my $j=0;$j<=scalar(@$Concepts);$j++) {
1207: my $concept = $Concepts->[$j];
1208: foreach my $foilid (@{$concept->{'foils'}}) {
1209: for (my $try=$mintries;$try<=$maxtries;$try++) {
1210: # concept analysis data
1211: $concept_data[$j]->[$try]->{'_correct'} +=
1212: $response_data{$foilid}->[$try]->{'_correct'};
1213: $concept_data[$j]->[$try]->{'_total'} +=
1214: $response_data{$foilid}->[$try]->{'_total'};
1215: #
1216: # foil analysis data
1217: if ($response_data{$foilid}->[$try]->{'_total'} == 0) {
1218: push(@{$foil_plot[$try]->{'_correct'}},0);
1219: } else {
1220: push(@{$foil_plot[$try]->{'_correct'}},
1221: 100*$response_data{$foilid}->[$try]->{'_correct'}/
1222: $response_data{$foilid}->[$try]->{'_total'});
1223: }
1224: foreach my $option (@{$ORdata->{'_Options'}}) {
1225: push(@{$foil_plot[$try]->{'_total'}},
1226: $response_data{$foilid}->[$try]->{'_total'});
1227: if ($response_data{$foilid}->[$try]->{'_total'} == 0) {
1228: push (@{$foil_plot[$try]->{$option}},0);
1229: } else {
1230: if ($response_data{$foilid}->[$try]->{'_total'} ==
1231: $response_data{$foilid}->[$try]->{'_correct'}) {
1232: push(@{$foil_plot[$try]->{$option}},0);
1233: } else {
1234: push (@{$foil_plot[$try]->{$option}},
1235: 100 *
1236: $response_data{$foilid}->[$try]->{$option} /
1237: ($response_data{$foilid}->[$try]->{'_total'}
1238: -
1239: $response_data{$foilid}->[$try]->{'_correct'}
1240: ));
1241: }
1242: }
1243: } # End of foreach my $option
1244: }
1245: } # End of foreach my $foilid
1246: } # End of concept loops
1247: #
1248: # Build a table for the plots
1249: my $analysis_html = "<br /><table>\n";
1250: my $optionkey = &build_option_index($ORdata);
1251: my $num_concepts = 1;
1252: if (defined($Concepts)) { $num_concepts = scalar(@$Concepts); }
1253: #
1254: for (my $try=$mintries;$try<=$maxtries;$try++) {
1255: if (! defined($response_data{'_total'}->[$try]) ||
1256: $response_data{'_total'}->[$try] == 0) {
1257: if ($try > 1) {
1258: $analysis_html.= '<tr><td align="center" colspan="4"><b>'.
1259: &mt('None of the selected students attempted the problem more than [_1] times.',$try-1).
1260: '</b></td></tr>';
1261: } else {
1262: $analysis_html.= '<tr><td colspan="4" align="center"><b>'.
1263: &mt('None of the selected students have attempted the problem').'</b></td></tr>';
1264: }
1265: last;
1266: }
1267: my $concept_graph='';
1268: if ($num_concepts > 1) {
1269: #
1270: # Create concept plot
1271: my @concept_plot_data;
1272: for (my $j=0;$j<=$#concept_data;$j++) {
1273: my $total = $concept_data[$j]->[$try]->{'_total'};
1274: if ($total == 0) {
1275: $concept_plot_data[$j] = 0;
1276: } else {
1277: $concept_plot_data[$j] = 100 *
1278: sprintf('%0.3f',
1279: $concept_data[$j]->[$try]->{'_correct'} /
1280: $total);
1281: }
1282: }
1283: #
1284: $concept_graph = &Apache::loncommon::DrawBarGraph
1285: ('Correct Concepts','Concept Number','Percent Correct',
1286: 100,$plotcolors,undef,\@concept_plot_data,{xskip=>1});
1287: }
1288: #
1289: # Create Foil Plots
1290: my $data_count = $response_data{'_total'}->[$try];
1291: my $correct = $response_data{'_correct'}->[$try];
1292: my @Datasets;
1293: foreach my $option ('_correct',@{$ORdata->{'_Options'}}) {
1294: next if (! exists($foil_plot[$try]->{$option}));
1295: push(@Datasets,$foil_plot[$try]->{$option});
1296: }
1297: #
1298: # Put a blank in the data set between concepts
1299: for (my $set =0;$set<=$#Datasets;$set++) {
1300: my @Data = @{$Datasets[$set]};
1301: my $idx = 0;
1302: foreach my $concept (@{$Concepts}) {
1303: foreach my $foilid (@{$concept->{'foils'}}) {
1304: $Datasets[$set]->[$idx++]=shift(@Data);
1305: }
1306: if ($concept->{'name'} ne $Concepts->[-1]->{'name'}) {
1307: $Datasets[$set]->[$idx++] = 0;
1308: }
1309: }
1310: }
1311: #
1312: # Set up the labels needed for the bar graph
1313: my @Labels;
1314: my $idx = 1;
1315: foreach my $concept (@{$Concepts}) {
1316: foreach my $foilid (@{$concept->{'foils'}}) {
1317: push(@Labels,$idx++);
1318: }
1319: push(@Labels,'');
1320: }
1321: #
1322: my $correct_graph = &Apache::loncommon::DrawBarGraph
1323: ('Correct Statements','Statement','% Answered Correct',
1324: 100,$plotcolors,\@Labels,$Datasets[0],{xskip=>1});
1325:
1326: #
1327: #
1328: next if (! defined($Datasets[0]));
1329: for (my $i=0; $i< scalar(@{$Datasets[0]});$i++) {
1330: $Datasets[0]->[$i]=0;
1331: }
1332: my $count = $response_data{'_total'}->[$try] -
1333: $response_data{'_correct'}->[$try];
1334: my $incorrect_graph = &Apache::loncommon::DrawBarGraph
1335: ('Incorrect Statements','Statement','% Chosen Incorrectly',
1336: 100,$plotcolors,\@Labels,@Datasets,{xskip=>1});
1337: $analysis_html.=
1338: '<tr><td colspan="4" align="center">'.
1339: '<font size="+1">'.
1340: &mt('Attempt [_1], [_2] submissions, [_3] correct, [_4] incorrect',
1341: $try,$data_count,$correct,$data_count-$correct).
1342: '</font>'.'</td></tr>'.$/.
1343: '<tr>'.
1344: '<td>'.$concept_graph.'</td>'.
1345: '<td>'.$correct_graph.'</td>'.
1346: '<td>'.$incorrect_graph.'</td>'.
1347: '<td>'.$optionkey.'<td>'.
1348: '</tr>'.$/;
1349: }
1350: $analysis_html .= "</table>\n";
1351: $table .= $analysis_html;
1352: return $table;
1353: }
1354:
1355: sub OR_analyze_by_tries {
1356: my ($r,$PerformanceData,$mintries,$maxtries) = @_;
1357: my %Trydata;
1358: $mintries = 1 if (! defined($mintries) || $mintries < 1);
1359: $maxtries = $mintries if (! defined($maxtries) || $maxtries < $mintries);
1360: my @students;
1361: foreach my $row (@$PerformanceData) {
1362: next if (! defined($row));
1363: my $tries = &get_tries_from_row($row);
1364: my %Row = &Process_OR_Row($row);
1365: next if (! %Row);
1366: my $student_id = $row->[&Apache::loncoursedata::RD_student_id()];
1367: $students[$tries]->{$student_id}++;
1368: while (my ($foilid,$href) = each(%Row)) {
1369: if (! ref($href)) {
1370: $Trydata{$foilid}->[$tries] += $href;
1371: next;
1372: }
1373: while (my ($option,$value) = each(%$href)) {
1374: $Trydata{$foilid}->[$tries]->{$option}+=$value;
1375: }
1376: }
1377: }
1378: for (my $try=$mintries;$try<=$maxtries;$try++) {
1379: $Trydata{'_studentcount'}->[$try] = scalar(keys(%{$students[$try]}));
1380: }
1381: return %Trydata;
1382: }
1383:
1384: #########################################################
1385: #
1386: # Option Response: Time Analysis
1387: #
1388: #########################################################
1389: sub OR_time_analysis {
1390: my ($performance_data,$ORdata) = @_;
1391: my ($table,$Foils,$Concepts) = &build_foil_index($ORdata);
1392: my $foilkey = &build_option_index($ORdata);
1393: my $num_concepts = 1;
1394: if (defined($Concepts)) { $num_concepts = scalar(@$Concepts); }
1395: #
1396: if ($num_concepts < 2) {
1397: $table = '<h3>'.
1398: &mt('Not enough data for concept analysis. '.
1399: 'Performing Foil Analysis').
1400: '</h3>'.$table;
1401: }
1402: #
1403: my $num_plots = $ENV{'form.NumPlots'};
1404: my $num_data = scalar(@$performance_data)-1;
1405: #
1406: my $current_index;
1407: $table .= "<table>\n";
1408: for (my $i=0;$i<$num_plots;$i++) {
1409: ##
1410: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
1411: ('startdate_'.$i);
1412: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
1413: ('enddate_'.$i);
1414: if (! defined($starttime) || ! defined($endtime)) {
1415: my $sec_in_day = 86400;
1416: my $last_sub_time = &get_time_from_row($performance_data->[-1]);
1417: my ($sday,$smon,$syear) =
1418: (localtime($last_sub_time - $sec_in_day*$i))[3..5];
1419: $starttime = &Time::Local::timelocal(0,0,0,$sday,$smon,$syear);
1420: $endtime = $starttime + $sec_in_day;
1421: if ($i == ($num_plots -1 )) {
1422: $starttime = &get_time_from_row($performance_data->[0]);
1423: }
1424: }
1425: $table .= '<tr><td colspan="4" align="center"><font size="+1">'.
1426: &mt('Data from [_1] to [_2]',
1427: &Apache::lonlocal::locallocaltime($starttime),
1428: &Apache::lonlocal::locallocaltime($endtime)).
1429: '</font></td></tr>'.$/;
1430: my $startdateform = &Apache::lonhtmlcommon::date_setter
1431: ('Statistics','startdate_'.$i,$starttime);
1432: my $enddateform = &Apache::lonhtmlcommon::date_setter
1433: ('Statistics','enddate_'.$i,$endtime);
1434: #
1435: my $begin_index;
1436: my $end_index;
1437: my $j;
1438: while (++$j < scalar(@$performance_data)) {
1439: last if (&get_time_from_row($performance_data->[$j])
1440: > $starttime);
1441: }
1442: $begin_index = $j;
1443: while ($j < scalar(@$performance_data)) {
1444: if (&get_time_from_row($performance_data->[$j]) > $endtime) {
1445: last;
1446: } else {
1447: $j++;
1448: }
1449: }
1450: $end_index = $j;
1451: ##
1452: my ($processed_time_data,$correct,$data_count,$student_count) =
1453: &OR_time_process_data($performance_data,$begin_index,$end_index);
1454: ##
1455: $table .= '<tr><td colspan="4" align="center"><font size="+1">'.
1456: &mt('[_1] submissions from [_2] students, [_3] correct, [_4] incorrect',
1457: $data_count,$student_count,$correct,$data_count-$correct).
1458: '</font></td></tr>'.$/;
1459: my $concept_correct_plot = '';
1460: if ($num_concepts > 1) {
1461: $concept_correct_plot =
1462: &OR_Concept_Time_Analysis($processed_time_data,
1463: $correct,$data_count,$student_count,
1464: $ORdata,$Concepts);
1465: }
1466: my ($foil_correct_plot,$foil_incorrect_plot) =
1467: &OR_Foil_Time_Analysis($processed_time_data,
1468: $correct,$data_count,$student_count,
1469: $ORdata,$Foils,$Concepts);
1470: $table .= '<tr>'.
1471: '<td>'.$concept_correct_plot.'</td>'.
1472: '<td>'.$foil_correct_plot.'</td>'.
1473: '<td>'.$foil_incorrect_plot.'</td>'.
1474: '<td align="left" valign="top">'.$foilkey.'</td></tr>'.$/;
1475: $table .= '<tr><td colspan="4" align="center">'.
1476: &mt('Start time: [_1]',$startdateform).'<br />'.
1477: &mt('End time: [_1]',$enddateform).'</td></tr>'.$/;
1478: $table.= '<tr><td colspan="4"> </td></tr>'.$/;
1479: }
1480: $table .= '</table>';
1481: #
1482: return $table;
1483: }
1484:
1485: sub OR_Foil_Time_Analysis {
1486: my ($processed_time_data,$correct,$data_count,$student_count,
1487: $ORdata,$Foils,$Concepts) = @_;
1488: if ($data_count <= 0) {
1489: return ('<h2>'.&mt('There is no data to plot').'</h2>','');
1490: }
1491: my $analysis_html;
1492: my @plotdata;
1493: my @labels;
1494: foreach my $concept (@{$Concepts}) {
1495: foreach my $foil (@{$concept->{'foils'}}) {
1496: push(@labels,scalar(@labels)+1);
1497: my $total = $processed_time_data->{$foil}->{'_total'};
1498: if ($total == 0) {
1499: push(@{$plotdata[0]},0);
1500: } else {
1501: push(@{$plotdata[0]},
1502: 100 * $processed_time_data->{$foil}->{'_correct'} / $total);
1503: }
1504: my $total_incorrect = $total - $processed_time_data->{$foil}->{'_correct'};
1505: for (my $i=0;$i<scalar(@{$ORdata->{'_Options'}});$i++) {
1506: my $option = $ORdata->{'_Options'}->[$i];
1507: if ($total_incorrect == 0) {
1508: push(@{$plotdata[$i+1]},0);
1509: } else {
1510: push(@{$plotdata[$i+1]},
1511: 100 * $processed_time_data->{$foil}->{$option} / $total_incorrect);
1512: }
1513: }
1514: }
1515: # Put in a blank one
1516: push(@labels,'');
1517: push(@{$plotdata[0]},0);
1518: for (my $i=0;$i<scalar(@{$ORdata->{'_Options'}});$i++) {
1519: push(@{$plotdata[$i+1]},0);
1520: }
1521: }
1522: #
1523: # Create the plot
1524: my $correct_plot = &Apache::loncommon::DrawBarGraph('Correct Statements',
1525: 'Statement Number',
1526: 'Percent Correct',
1527: 100,
1528: $plotcolors,
1529: undef,
1530: $plotdata[0],
1531: {xskip=>1});
1532: for (my $j=0; $j< scalar(@{$plotdata[0]});$j++) {
1533: $plotdata[0]->[$j]=0;
1534: }
1535: my $incorrect_plot =
1536: &Apache::loncommon::DrawBarGraph('Incorrect Statements',
1537: 'Statement Number',
1538: 'Incorrect Option Choice',
1539: 100,
1540: $plotcolors,
1541: undef,
1542: @plotdata,{xskip=>1});
1543: return ($correct_plot,$incorrect_plot);
1544: }
1545:
1546: sub OR_Concept_Time_Analysis {
1547: my ($processed_time_data,$correct,$data_count,$student_count,
1548: $ORdata,$Concepts) = @_;
1549: return '' if ($data_count == 0);
1550: #
1551: # Put the data in plottable form
1552: my @plotdata;
1553: foreach my $concept (@$Concepts) {
1554: my ($total,$correct);
1555: foreach my $foil (@{$concept->{'foils'}}) {
1556: $total += $processed_time_data->{$foil}->{'_total'};
1557: $correct += $processed_time_data->{$foil}->{'_correct'};
1558: }
1559: if ($total == 0) {
1560: push(@plotdata,0);
1561: } else {
1562: push(@plotdata,100 * $correct / $total);
1563: }
1564: }
1565: #
1566: # Create the plot
1567: return &Apache::loncommon::DrawBarGraph('Correct Concepts',
1568: 'Concept Number',
1569: 'Percent Correct',
1570: 100,
1571: $plotcolors,
1572: undef,
1573: \@plotdata,{xskip=>1});
1574: }
1575:
1576: sub OR_time_process_data {
1577: my ($performance_data,$begin_index,$end_index)=@_;
1578: my %processed_time_data;
1579: my %distinct_students;
1580: my ($correct,$data_count);
1581: if (($begin_index == $end_index) &&
1582: ($end_index != scalar(@$performance_data)-1)) {
1583: return undef;
1584: }
1585: # Be sure we include the last one if we are asked for it.
1586: # That we have to correct here (and not when $end_index is
1587: # given a value) should probably be considered a bug.
1588: if ($end_index == scalar(@$performance_data)-1) {
1589: $end_index++;
1590: }
1591: my $count;
1592: for (my $i=$begin_index;$i<$end_index;$i++) {
1593: my $attempt = $performance_data->[$i];
1594: $count++;
1595: next if (! defined($attempt));
1596: my %attempt = &Process_OR_Row($attempt);
1597: $data_count++;
1598: $correct += $attempt{'_correct'};
1599: $distinct_students{$attempt->[&Apache::loncoursedata::RD_student_id()]}++;
1600: while (my ($foilid,$href) = each(%attempt)) {
1601: if (! ref($href)) {
1602: $processed_time_data{$foilid} += $href;
1603: next;
1604: }
1605: while (my ($option,$value) = each(%$href)) {
1606: $processed_time_data{$foilid}->{$option}+=$value;
1607: }
1608: }
1609: }
1610: return (\%processed_time_data,$correct,$data_count,
1611: scalar(keys(%distinct_students)));
1612: }
1613:
1614: sub build_foil_index {
1615: my ($ORdata) = @_;
1616: return if (! exists($ORdata->{'_Foils'}));
1617: my %Foildata = %{$ORdata->{'_Foils'}};
1618: my @Foils = sort(keys(%Foildata));
1619: my %Concepts;
1620: foreach my $foilid (@Foils) {
1621: push(@{$Concepts{$Foildata{$foilid}->{'_Concept'}}},
1622: $foilid);
1623: }
1624: undef(@Foils);
1625: # Having gathered the concept information in a hash, we now translate it
1626: # into an array because we need to be consistent about order.
1627: # Also put the foils in order, too.
1628: my $sortfunction = sub {
1629: my %Numbers = (one => 1,
1630: two => 2,
1631: three => 3,
1632: four => 4,
1633: five => 5,
1634: six => 6,
1635: seven => 7,
1636: eight => 8,
1637: nine => 9,
1638: ten => 10,);
1639: my $a1 = lc($a);
1640: my $b1 = lc($b);
1641: if (exists($Numbers{$a1})) {
1642: $a1 = $Numbers{$a1};
1643: }
1644: if (exists($Numbers{$b1})) {
1645: $b1 = $Numbers{$b1};
1646: }
1647: if (($a1 =~/^\d+$/) && ($b1 =~/^\d+$/)) {
1648: return $a1 <=> $b1;
1649: } else {
1650: return $a1 cmp $b1;
1651: }
1652: };
1653: my @Concepts;
1654: foreach my $concept (sort $sortfunction (keys(%Concepts))) {
1655: if (! defined($Concepts{$concept})) {
1656: $Concepts{$concept}=[];
1657: # next;
1658: }
1659: push(@Concepts,{ name => $concept,
1660: foils => [@{$Concepts{$concept}}]});
1661: push(@Foils,(@{$Concepts{$concept}}));
1662: }
1663: #
1664: # Build up the table of row labels.
1665: my $table = '<table border="1" >'."\n";
1666: if (@Concepts > 1) {
1667: $table .= '<tr>'.
1668: '<th>'.&mt('Concept Number').'</th>'.
1669: '<th>'.&mt('Concept').'</th>'.
1670: '<th>'.&mt('Foil Number').'</th>'.
1671: '<th>'.&mt('Foil Name').'</th>'.
1672: '<th>'.&mt('Foil Text').'</th>'.
1673: '<th>'.&mt('Correct Value').'</th>'.
1674: "</tr>\n";
1675: } else {
1676: $table .= '<tr>'.
1677: '<th>'.&mt('Foil Number').'</th>'.
1678: '<th>'.&mt('Foil Name').'</th>'.
1679: '<th>'.&mt('Foil Text').'</th>'.
1680: '<th>'.&mt('Correct Value').'</th>'.
1681: "</tr>\n";
1682: }
1683: my $conceptindex = 1;
1684: my $foilindex = 1;
1685: foreach my $concept (@Concepts) {
1686: my @FoilsInConcept = @{$concept->{'foils'}};
1687: my $firstfoil = shift(@FoilsInConcept);
1688: if (@Concepts > 1) {
1689: $table .= '<tr>'.
1690: '<td>'.$conceptindex.'</td>'.
1691: '<td>'.&HTML::Entities::encode($concept->{'name'},'<>&"').'</td>'.
1692: '<td>'.$foilindex++.'</td>'.
1693: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'name'},'<>&"').'</td>'.
1694: '<td>'.$Foildata{$firstfoil}->{'text'}.'</td>'.
1695: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'value'},'<>&"').'</td>'.
1696: "</tr>\n";
1697: } else {
1698: $table .= '<tr>'.
1699: '<td>'.$foilindex++.'</td>'.
1700: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'name'},'<>&"').'</td>'.
1701: '<td>'.$Foildata{$firstfoil}->{'text'}.'</td>'.
1702: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'value'},'<>&"').'</td>'.
1703: "</tr>\n";
1704: }
1705: foreach my $foilid (@FoilsInConcept) {
1706: if (@Concepts > 1) {
1707: $table .= '<tr>'.
1708: '<td></td>'.
1709: '<td></td>'.
1710: '<td>'.$foilindex.'</td>'.
1711: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'name'},'<>&"').'</td>'.
1712: '<td>'.$Foildata{$foilid}->{'text'}.'</td>'.
1713: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'value'},'<>&"').'</td>'.
1714: "</tr>\n";
1715: } else {
1716: $table .= '<tr>'.
1717: '<td>'.$foilindex.'</td>'.
1718: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'name'},'<>&"').'</td>'.
1719: '<td>'.$Foildata{$foilid}->{'text'}.'</td>'.
1720: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'value'},'<>&"').'</td>'.
1721: "</tr>\n";
1722: }
1723: } continue {
1724: $foilindex++;
1725: }
1726: } continue {
1727: $conceptindex++;
1728: }
1729: $table .= "</table>\n";
1730: #
1731: # Build option index with color stuff
1732: return ($table,\@Foils,\@Concepts);
1733: }
1734:
1735: sub build_option_index {
1736: my ($ORdata)= @_;
1737: my $table = "<table>\n";
1738: my $optionindex = 0;
1739: my @Rows;
1740: foreach my $option (&mt('correct option chosen'),@{$ORdata->{'_Options'}}) {
1741: my $color = $plotcolors->[$optionindex++];
1742: push (@Rows,
1743: '<tr>'.
1744: '<td bgcolor="'.$color.'">'.
1745: '<font color="'.$color.'">'.('*'x3).'</font>'.'</td>'.
1746: '<td>'.&HTML::Entities::encode($option,'<>&"').'</td>'.
1747: "</tr>\n");
1748: }
1749: shift(@Rows); # Throw away 'correct option chosen' color
1750: $table .= join('',reverse(@Rows));
1751: $table .= "</table>\n";
1752: }
1753:
1754: sub build_foil_key {
1755: my ($foils,$extra_data)= @_;
1756: if (! defined($extra_data)) { $extra_data = {}; }
1757: my $table = "<table>\n";
1758: my $foil_index = 0;
1759: my @rows;
1760: foreach my $foil (&mt('correct foil chosen'),@{$foils}) {
1761: my $color = $plotcolors->[$foil_index++];
1762: push (@rows,
1763: '<tr>'.
1764: '<td bgcolor="'.$color.'" class="key">'.
1765: '<font color="'.$color.'">'.('*'x4).'</font></td>'.
1766: '<td>'.&HTML::Entities::encode($foil,'<>&"').
1767: (' 'x2).$extra_data->{$foil}.'</td>'.
1768: "</tr>\n");
1769: }
1770: shift(@rows); # Throw away 'correct foil chosen' color
1771: $table .= join('',reverse(@rows));
1772: $table .= "</table>\n";
1773: }
1774:
1775: #########################################################
1776: #########################################################
1777: ##
1778: ## Generic Interface Routines
1779: ##
1780: #########################################################
1781: #########################################################
1782: sub CreateInterface {
1783: ##
1784: ## Environment variable initialization
1785: if (! exists$ENV{'form.AnalyzeOver'}) {
1786: $ENV{'form.AnalyzeOver'} = 'tries';
1787: }
1788: ##
1789: ## Build the menu
1790: my $Str = '';
1791: $Str .= &Apache::lonhtmlcommon::breadcrumbs
1792: (undef,'Detailed Problem Analysis');
1793: $Str .= '<table cellspacing="5">'."\n";
1794: $Str .= '<tr>';
1795: $Str .= '<td align="center"><b>'.&mt('Sections').'</b></td>';
1796: $Str .= '<td align="center"><b>'.&mt('Enrollment Status').'</b></td>';
1797: # $Str .= '<td align="center"><b>'.&mt('Sequences and Folders').'</b></td>';
1798: $Str .= '<td align="center"> </td>';
1799: $Str .= '</tr>'."\n";
1800: ##
1801: ##
1802: $Str .= '<tr><td align="center">'."\n";
1803: $Str .= &Apache::lonstatistics::SectionSelect('Section','multiple',5);
1804: $Str .= '</td>';
1805: #
1806: $Str .= '<td align="center">';
1807: $Str .= &Apache::lonhtmlcommon::StatusOptions(undef,undef,5);
1808: $Str .= '</td>';
1809: #
1810: # $Str .= '<td align="center">';
1811: my $only_seq_with_assessments = sub {
1812: my $s=shift;
1813: if ($s->{'num_assess'} < 1) {
1814: return 0;
1815: } else {
1816: return 1;
1817: }
1818: };
1819: &Apache::lonstatistics::MapSelect('Maps','multiple,all',5,
1820: $only_seq_with_assessments);
1821: ##
1822: ##
1823: $Str .= '<td>';
1824: ##
1825: my $showprob_checkbox =
1826: '<input type="checkbox" name="show_prob" value="true" ';
1827: if ($ENV{'form.show_prob'} eq 'true') {
1828: $showprob_checkbox .= 'checked ';
1829: }
1830: $showprob_checkbox.= ' />';
1831: $Str.= '<nobr><label>'.
1832: &mt('Show problem [_1]',$showprob_checkbox).
1833: '</label></nobr><br />';
1834: ##
1835: my $analyze_selector = '<select name="AnalyzeOver" >';
1836: $analyze_selector .= '<option value="tries" ';
1837: if (! exists($ENV{'form.AnalyzeOver'}) ||
1838: $ENV{'form.AnalyzeOver'} eq 'tries'){
1839: # Default to tries
1840: $analyze_selector .= ' selected ';
1841: }
1842: $analyze_selector .= '>'.&mt('Tries').'</option>';
1843: $analyze_selector .= '<option value="time" ';
1844: $analyze_selector .= ' selected ' if ($ENV{'form.AnalyzeOver'} eq 'time');
1845: $analyze_selector .= '>'.&mt('Time').'</option>';
1846: $analyze_selector .= '</select>';
1847: $Str .= '<nobr><label>'.
1848: &mt('Analyze Over [_1] [_2]',
1849: $analyze_selector,
1850: &Apache::loncommon::help_open_topic('Analysis_Analyze_Over')).
1851: '</label></nobr><br />'.$/;
1852: ##
1853: my $numplots_selector = '<select name="NumPlots">';
1854: if (! exists($ENV{'form.NumPlots'})
1855: || $ENV{'form.NumPlots'} < 1
1856: || $ENV{'form.NumPlots'} > 20) {
1857: $ENV{'form.NumPlots'} = 5;
1858: }
1859: foreach my $i (1,2,3,4,5,6,7,8,10,15,20) {
1860: $numplots_selector .= '<option value="'.$i.'" ';
1861: if ($ENV{'form.NumPlots'} == $i) { $numplots_selector.=' selected '; }
1862: $numplots_selector .= '>'.$i.'</option>';
1863: }
1864: $numplots_selector .= '</select></nobr><br />';
1865: $Str .= '<nobr><label>'.&mt('Number of Plots [_1]',$numplots_selector).
1866: '</label></nobr>';
1867: ##
1868: $Str .= '<nobr><label>'.&mt('Status: [_1]',
1869: '<input type="text" '.
1870: 'name="stats_status" size="60" value="" />'
1871: ).
1872: '</label></nobr>';
1873: $Str .= '</td>';
1874: ##
1875: ##
1876: $Str .= '</tr>'."\n";
1877: $Str .= '</table>'."\n";
1878: return $Str;
1879: }
1880:
1881: #########################################################
1882: #########################################################
1883: ##
1884: ## Misc Option Response functions
1885: ##
1886: #########################################################
1887: #########################################################
1888: sub get_time_from_row {
1889: my ($row) = @_;
1890: if (ref($row)) {
1891: return $row->[&Apache::loncoursedata::RD_timestamp()];
1892: }
1893: return undef;
1894: }
1895:
1896: sub get_tries_from_row {
1897: my ($row) = @_;
1898: if (ref($row)) {
1899: return $row->[&Apache::loncoursedata::RD_tries()];
1900: }
1901: return undef;
1902: }
1903:
1904: sub hashify_attempt {
1905: my ($row) = @_;
1906: my %attempt;
1907: $attempt{'student'} = $row->[&Apache::loncoursedata::RD_sname()];
1908: $attempt{'tries'} = $row->[&Apache::loncoursedata::RD_tries()];
1909: $attempt{'submission'} = &Apache::lonnet::unescape($row->[&Apache::loncoursedata::RD_submission()]);
1910: $attempt{'award'} = $row->[&Apache::loncoursedata::RD_awarddetail()];
1911: $attempt{'timestamp'} = $row->[&Apache::loncoursedata::RD_timestamp()];
1912: return %attempt;
1913: }
1914:
1915: sub Process_OR_Row {
1916: my ($row) = @_;
1917: my %RowData;
1918: # my $student_id = $row->[&Apache::loncoursedata::RD_student_id()];
1919: my $award = $row->[&Apache::loncoursedata::RD_awarddetail()];
1920: my $grading = $row->[&Apache::loncoursedata::RD_response_eval()];
1921: my $submission = $row->[&Apache::loncoursedata::RD_submission()];
1922: my $time = $row->[&Apache::loncoursedata::RD_timestamp()];
1923: # my $tries = $row->[&Apache::loncoursedata::RD_tries()];
1924: return undef if ($award eq 'MISSING_ANSWER');
1925: if (&submission_is_correct($award)) {
1926: $RowData{'_correct'} = 1;
1927: }
1928: $RowData{'_total'} = 1;
1929: my @Foilgrades = split('&',$grading);
1930: my @Foilsubs = split('&',$submission);
1931: for (my $j=0;$j<=$#Foilgrades;$j++) {
1932: my ($foilid,$correct) = split('=',$Foilgrades[$j]);
1933: $foilid = &Apache::lonnet::unescape($foilid);
1934: my (undef,$submission) = split('=',$Foilsubs[$j]);
1935: if ($correct) {
1936: $RowData{$foilid}->{'_correct'}++;
1937: } else {
1938: $submission = &Apache::lonnet::unescape($submission);
1939: $RowData{$foilid}->{$submission}++;
1940: }
1941: $RowData{$foilid}->{'_total'}++;
1942: }
1943: return %RowData;
1944: }
1945:
1946: sub submission_is_correct {
1947: my ($award) = @_;
1948: if ($award =~ /(APPROX_ANS|EXACT_ANS)/) {
1949: return 1;
1950: } else {
1951: return 0;
1952: }
1953: }
1954:
1955: 1;
1956:
1957: __END__
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