File:
[LON-CAPA] /
loncom /
interface /
statistics /
lonproblemanalysis.pm
Revision
1.112:
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Tue Feb 22 04:32:46 2005 UTC (19 years, 4 months ago) by
matthew
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MAIN
CVS tags:
HEAD
half way through rewrite of numerical response analysis.
Added progress window to student answer computation.
&numerical_plot_percent is mostly done.
&numerical_classify_response gathers more statistics and passes them back
in a seperate hash.
Minor code cleanups elsewhere.
1: # The LearningOnline Network with CAPA
2: #
3: # $Id: lonproblemanalysis.pm,v 1.112 2005/02/22 04:32:46 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_abs'};
307: my $low_bin = $stats->{'lowest_ans'}-$stats->{'max_bin_size'};
308: my $high_bin = $stats->{'highest_ans'}+$stats->{'max_bin_size'};
309: my @bins;
310: for (my $num = $low_bin;$num <= $high_bin;$num+=($min_bin_size/2)) {
311: push(@bins,$num);
312: }
313: #
314: my @correct;
315: my @incorrect;
316: my @count;
317: while (my ($ans,$submissions) = each(%$responses)) {
318: while (my ($submission,$counts) = each(%$submissions)) {
319: my ($correct_count,$incorrect_count) = @$counts;
320: my $scaled_value = abs(($submission-$ans)/$ans);
321: my $bin=0;
322: for ($bin=0;$bin<$#bins;$bin++) { # not <= for a reason
323: last if ($bins[$bin]>$scaled_value);
324: }
325: $correct[$bin]+=$correct_count;
326: $incorrect[$bin]+=$incorrect_count;
327: $count[$bin]+=$correct_count+$incorrect_count;
328: }
329: }
330: #
331: # Skip empty bins
332: my (@plot_correct,@plot_incorrect,@new_bins,@new_count);
333: my $min_skip = 2;
334: for (my $i=0;$i<=$#bins;$i++) {
335: my $sum=0;
336: for (my $j=-$min_skip;$j<=$min_skip && $i+$j<=$#bins;$j++) {
337: $sum += $correct[$i+$j] + $incorrect[$i+$j];
338: }
339: if ($sum) {
340: push(@new_bins,$bins[$i]);
341: push(@plot_correct,$correct[$i]);
342: push(@plot_incorrect,$incorrect[$i]);
343: push(@new_count,$correct[$i]+$incorrect[$i]);
344: }
345: }
346: @correct = @plot_correct;
347: @incorrect = @plot_incorrect;
348: @count = @new_count;
349: @bins = @new_bins;
350: for (my $i=0;$i<=$#bins;$i++) {
351: $plot_correct[$i] *= 100/$total;
352: $plot_incorrect[$i] *= 100/$total;
353: }
354: #
355: my $title = &mt('Distribution by Percent');
356: my @labels = (1..scalar(@bins));
357: my $graph = &Apache::loncommon::DrawBarGraph
358: ($title,'Percent difference from correct','Number of answers',
359: 100,['#33FF00','#FF3300'],\@labels,\@plot_correct,\@plot_incorrect,
360: {xskip=>1});
361: #
362: my $table = $graph.$/.
363: &numerical_bin_table(\@bins,\@labels,\@incorrect,\@correct,\@count).$/;
364: return $table;
365: }
366:
367: sub numerical_plot_differences {
368: my ($r,$responses,$stats) = @_;
369: #
370: my $total = $stats->{'submission_count'};
371: return '' if ($total == 0);
372: #
373: my @bins;
374: my @labels;
375: # Hmmmm, should switch to absolute difference
376: for (my $i=1;$i<=20;$i++) {
377: push(@bins,$i/2);
378: push(@labels,$i);
379: }
380: #
381: my @correct;
382: my @incorrect;
383: my @count;
384: while (my ($ans,$submissions) = each(%$responses)) {
385: next if ($ans =~ /^_/);
386: while (my ($submission,$counts) = each(%$submissions)) {
387: my ($correct_count,$incorrect_count) = @$counts;
388: my $value = abs($submission-$ans);
389: my $bin=0;
390: for ($bin=0;$bin<$#bins;$bin++) { # not <= for a reason
391: last if ($bins[$bin]>$value);
392: }
393: $correct[$bin]+=$correct_count;
394: $incorrect[$bin]+=$incorrect_count;
395: $count[$bin]+=$correct_count+$incorrect_count;
396: }
397: }
398: #
399: my @plot_correct;
400: my @plot_incorrect;
401: for (my $i=0;$i<=$#bins;$i++) {
402: $plot_correct[$i] = $correct[$i]*100/$total;
403: $plot_incorrect[$i] = $incorrect[$i]*100/$total;
404: }
405: my $title = &mt('Distribution by Magnitude');
406: my $graph = &Apache::loncommon::DrawBarGraph
407: ($title,'magnitude difference from correct','Number of answers',
408: 100,['#33FF00','#FF3300'],\@labels,\@plot_correct,\@plot_incorrect,
409: {xskip=>1});
410: #
411: my $table = $graph.$/.
412: &numerical_bin_table(\@bins,\@labels,\@incorrect,\@correct,\@count).$/;
413: return $table;
414: }
415:
416: sub numerical_classify_responses {
417: my ($full_row_data,$correct,$function) = @_;
418: my %submission_data;
419: my %students;
420: my %stats;
421: my $max=0;
422: foreach my $row (@$full_row_data) {
423: my %subm = &hashify_attempt($row);
424: if (ref($correct) eq 'HASH') {
425: my $s_correct = $correct->{$subm{'student'}};
426: $subm{'correct'} = $s_correct->{'answer'};
427: foreach my $item ('unit','ans_low','ans_high') {
428: $subm{$item} = $s_correct->{$item};
429: }
430: } else { # This probably never happens....
431: $subm{'correct'} = $correct->{'answer'};
432: $subm{'unit'} = $correct->{'unit'};
433: }
434: #
435: my $abs_low =abs($subm{'correct'}-$subm{'ans_low'});
436: my $abs_high=abs($subm{'correct'}-$subm{'ans_high'});
437: if (! defined($stats{'min_abs'}) ||
438: $stats{'min_abs'} > $abs_low) {
439: $stats{'min_abs'} = $abs_low;
440: }
441: if ($stats{'min_abs'} > $abs_high) {
442: $stats{'min_abs'} = $abs_high;
443: }
444: if (! defined($stats{'max_abs'}) ||
445: $stats{'max_abs'} < $abs_low) {
446: $stats{'max_abs'} = $abs_low;
447: }
448: if ($stats{'max_abs'} < $abs_high) {
449: $stats{'max_abs'} = $abs_high;
450: }
451: my $low_percent = 100 * abs($abs_low / $subm{'correct'});
452: my $high_percent = 100 * abs($abs_high / $subm{'correct'});
453: if (! defined($stats{'min_percent'}) ||
454: $stats{'min_percent'} > $low_percent) {
455: $stats{'min_percent'} = $low_percent;
456: }
457: if ($stats{'min_percent'} > $high_percent) {
458: $stats{'min_percent'} = $high_percent;
459: }
460: if (! defined($stats{'max_percent'}) ||
461: $stats{'max_percent'} < $low_percent) {
462: $stats{'max_percent'} = $low_percent;
463: }
464: if ($stats{'max_percent'} < $high_percent) {
465: $stats{'max_percent'} = $high_percent;
466: }
467: if (! defined($stats{'lowest_ans'}) ||
468: $stats{'lowest_ans'} > $subm{'correct'}) {
469: $stats{'lowest_ans'} = $subm{'correct'};
470: }
471: if (! defined($stats{'highest_ans'}) ||
472: $stats{'highest_ans'} < $subm{'correct'}) {
473: $stats{'highest_ans'} = $subm{'correct'};
474: }
475: #
476: $subm{'submission'} =~ s/=\d+\s*$//;
477: if (&$function(\%subm)) {
478: my $scaled = '1';
479: my ($sname,$sdom) = split(':',$subm{'student'});
480: my ($myunit,$mysub) = ($subm{'unit'},$subm{'submission'});
481: my $result =
482: &capa::caparesponse_get_real_response($myunit,
483: $mysub,
484: \$scaled);
485: &Apache::lonnet::logthis('scaled = '.$scaled.' result ='.$result);
486: next if (! defined($scaled));
487: # next if ($result ne '6');
488: my $submission = $scaled;
489: $students{$subm{'student'}}++;
490: $stats{'submission_count'}++;
491: if (&numerical_submission_is_correct($subm{'award'})) {
492: $stats{'correct_count'}++;
493: $submission_data{$subm{'correct'}}->{$submission}->[0]++;
494: } elsif (&numerical_submission_is_incorrect($subm{'award'})) {
495: $stats{'incorrect_count'}++;
496: $submission_data{$subm{'correct'}}->{$submission}->[1]++;
497: }
498: }
499: }
500: $stats{'students'}=scalar(keys(%students));
501: return (\%submission_data,\%stats);
502: }
503:
504: sub numerical_submission_is_correct {
505: my ($award) = @_;
506: if ($award =~ /^(APPROX_ANS|EXACT_ANS)$/) {
507: return 1;
508: } else {
509: return 0;
510: }
511: }
512:
513: sub numerical_submission_is_incorrect {
514: my ($award) = @_;
515: if ($award =~ /^(INCORRECT)$/) {
516: return 1;
517: } else {
518: return 0;
519: }
520: }
521:
522: sub numerical_bin_table {
523: my ($bins,$labels,$incorrect,$correct,$count)=@_;
524: my $table =
525: '<table><tr><th>'.&mt('Bar').'</th>'.
526: '<th colspan="3">'.&mt('Range').'</th>'.
527: '<th>'.&mt('Incorrect').'</th>'.
528: '<th>'.&mt('Correct').'</th>'.
529: '<th>'.&mt('Count').'</th>'.
530: '</tr>'.$/;
531: for (my $i=0;$i<scalar(@{$bins});$i++) {
532: my $lownum;
533: if ($i == 0) {
534: $lownum = 0;
535: } else {
536: $lownum = $bins->[$i-1];
537: }
538: my $highnum = $bins->[$i];
539: $table .=
540: '<tr>'.
541: '<td>'.$labels->[$i].'</td>'.
542: '<td align="right">'.$lownum.'</td>'.
543: '<td> - </td>'.
544: '<td align="right">'.$highnum.'</td>'.
545: '<td align="right">'.$incorrect->[$i].'</td>'.
546: '<td align="right">'.$correct->[$i].'</td>'.
547: '<td align="right">'.$count->[$i].'</td>'.
548: '</tr>'.$/;
549: }
550: $table.= '</table>';
551: return $table;
552: }
553:
554: sub numerical_determine_answers {
555: my ($r,$resource,$partid,$respid,$students)=@_;
556: my $c = $r->connection();
557: #
558: my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin
559: ($r,'Student Answer Compilation Status',
560: 'Student Answer Compilation Progress', scalar(@$students),
561: 'inline',undef,'Statistics','stats_status');
562: #
563: # Read in the cache (if it exists) before we start timing things.
564: &Apache::lonstathelpers::ensure_proper_cache($resource->{'symb'});
565: #
566: my $correct;
567: my %answers;
568: foreach my $student (@$students) {
569: last if ($c->aborted());
570: my $sname = $student->{'username'};
571: my $sdom = $student->{'domain'};
572: # analyze problem
573: my $analysis =
574: &Apache::lonstathelpers::analyze_problem_as_student($resource,
575: $sname,
576: $sdom);
577: # make the key
578: my $key = $partid.'.'.$respid;
579: foreach my $item ('answer','unit','ans_high','ans_low') {
580: $correct->{$sname.':'.$sdom}->{$item} =
581: $analysis->{$key.'.'.$item}->[0];
582: }
583: $answers{$analysis->{$key.'.answer'}->[0]}++;
584: &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
585: &mt('last student'));
586: }
587: &Apache::lonstathelpers::write_analysis_cache();
588: &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
589: return ($correct,\%answers);
590: }
591:
592: #
593: # Inputs: $r, $width, $height, $data
594: # $n = number of students
595: # $data = hashref of $answer => $frequency pairs
596: sub numerical_one_dimensional_plot {
597: my ($r,$width,$height,$data)=@_;
598: #
599: # Compute data -> image scaling factors
600: my $max_y = 0;
601: my $min_x = undef;
602: my $max_x = undef;
603: my $n = 0;
604: while (my ($answer,$count) = each(%$data)) {
605: $n+=$count;
606: $max_y = $count if ($max_y < $count);
607: if (! defined($min_x) || $answer < $min_x) {
608: $min_x = $answer;
609: }
610: if (! defined($max_x) || $answer > $max_x) {
611: $max_x = $answer;
612: }
613: }
614: #
615: my $min_max_difference = $max_x - $min_x;
616: if (! defined($min_max_difference) || $min_max_difference == 0) {
617: $min_max_difference = 1;
618: }
619: my $h_scale = ($width-10)/$min_max_difference;
620: #
621: my $ticscale = 5;
622: if ($max_y * $ticscale > $height/2) {
623: $ticscale = int($height/2/$max_y);
624: $ticscale = 1 if ($ticscale < 1);
625: }
626: #
627: # Create the plot
628: my $plot =
629: qq{<drawimage width="$width" height="$height" bgcolor="transparent" >};
630: while (my ($answer,$count) = each(%$data)) {
631: my $xloc = 5+$h_scale*($answer - $min_x);
632: my $top = $height/2-$count*$ticscale;
633: my $bottom = $height/2+$count*$ticscale;
634: $plot .= &line($xloc,$top,$xloc,$bottom,'888888',1);
635: }
636: #
637: # Put the scale on last to ensure it is on top of the data.
638: if ($min_x < 0 && $max_x > 0) {
639: my $circle_x = 5+$h_scale*abs($min_x); # '0' in data coordinates
640: my $r = 4;
641: $plot .= &line(5,$height/2,$circle_x-$r,$height/2,'000000',1);
642: $plot .= &circle($circle_x,$height/2,$r+1,'000000');
643: $plot .= &line($circle_x+$r,$height/2,$width-5,$height/2,'000000',1);
644: } else {
645: $plot .= &line(5,$height/2,$width-5,$height/2,'000000',1);
646: }
647: $plot .= '</drawimage>';
648: my $plotresult = &Apache::lonxml::xmlparse($r,'web',$plot);
649: my $result = '<table>'.
650: '<tr><td colspan="3" align="center">'.
651: '<font size="+2">'.&mt('Distribution of correct answers').'</font>'.
652: '<br />'.&mt('[_1] students, [_2] distinct correct answers',
653: $n,scalar(keys(%$data))).
654: '<br />'.&mt('Maximum number of coinciding values: [_1]',$max_y).
655: '</td></tr>'.
656: '<tr>'.
657: '<td valign="center">'.$min_x.'</td>'.
658: '<td>'.$plotresult.'</td>'.
659: '<td valign="center">'.$max_x.'</td>'.
660: '</tr>'.
661: '</table>';
662: return $result;
663: }
664:
665: ##
666: ## Helper subroutines for <drawimage>.
667: ## These should probably go somewhere more suitable soon.
668: sub line {
669: my ($x1,$y1,$x2,$y2,$color,$thickness) = @_;
670: return qq{<line x1="$x1" y1="$y1" x2="$x2" y2="$y2" color="$color" thickness="$thickness" />};
671: }
672:
673: sub text {
674: my ($x,$y,$color,$text,$font,$direction) = @_;
675: if (! defined($font) || $font !~ /^(tiny|small|medium|large|giant)$/) {
676: $font = 'medium';
677: }
678: if (! defined($direction) || $direction ne 'vertical') {
679: $direction = '';
680: }
681: return qq{<text x="$x" y="$y" color="$color" font="$font" direction="$direction" >$text</text>};
682: }
683:
684: sub rectangle {
685: my ($x1,$y1,$x2,$y2,$color,$thickness,$filled) = @_;
686: return qq{<rectangle x1="$x1" y1="$y1" x2="$x2" y2="$y2" color="$color" thickness="$thickness" filled="$filled" />};
687: }
688:
689: sub arc {
690: my ($x,$y,$width,$height,$start,$end,$color,$thickness,$filled)=@_;
691: return qq{<arc x="$x" y="$y" width="$width" height="$height" start="$start" end="$end" color="$color" thickness="$thickness" filled="$filled" />};
692: }
693:
694: sub circle {
695: my ($x,$y,$radius,$color,$thickness,$filled)=@_;
696: return &arc($x,$y,$radius,$radius,0,360,$color,$thickness,$filled);
697: }
698:
699: #########################################################
700: #########################################################
701: ##
702: ## Radio Response Routines
703: ##
704: #########################################################
705: #########################################################
706: sub radio_response_analysis {
707: my ($r,$problem,$problem_analysis,$students) = @_;
708: #
709: if ($ENV{'form.AnalyzeOver'} !~ /^(tries|time)$/) {
710: $r->print('Bad request');
711: }
712: #
713: my ($resource,$partid,$respid) = ($problem->{'resource'},
714: $problem->{'part'},
715: $problem->{'respid'});
716: #
717: my $analysis_html;
718: my $foildata = $problem_analysis->{'_Foils'};
719: my ($table,$foils,$concepts) = &build_foil_index($problem_analysis);
720: if (! defined($concepts)) {
721: $concepts = [];
722: }
723: #
724: my %true_foils;
725: my $num_true = 0;
726: if (! $problem_analysis->{'answercomputed'}) {
727: foreach my $foil (@$foils) {
728: if ($foildata->{$foil}->{'value'} eq 'true') {
729: $true_foils{$foil}++;
730: }
731: }
732: $num_true = scalar(keys(%true_foils));
733: }
734: #
735: $analysis_html .= $table;
736: # Gather student data
737: my $response_data = &Apache::loncoursedata::get_response_data
738: (\@Apache::lonstatistics::SelectedSections,
739: $Apache::lonstatistics::enrollment_status,
740: $resource->{'symb'},$respid);
741: my $correct; # either a hash reference or a scalar
742: if ($problem_analysis->{'answercomputed'} || scalar(@$concepts) > 1) {
743: # This takes a while for large classes...
744: &Apache::lonstathelpers::GetStudentAnswers($r,$problem,$students,
745: 'Statistics',
746: 'stats_status');
747: foreach my $student (@$students) {
748: my ($idx,@remainder) = split('&',$student->{'answer'});
749: my ($answer) = ($remainder[$idx]=~/^(.*)=([^=]*)$/);
750: $correct->{$student->{'username'}.':'.$student->{'domain'}}=
751: &Apache::lonnet::unescape($answer);
752: }
753: } else {
754: foreach my $foil (keys(%$foildata)) {
755: if ($foildata->{$foil}->{'value'} eq 'true') {
756: $correct = $foildata->{$foil}->{'name'};
757: }
758: }
759: }
760: #
761: if (! defined($response_data) || ref($response_data) ne 'ARRAY' ) {
762: $analysis_html = '<h2>'.
763: &mt('There is no submission data for this resource').
764: '</h2>';
765: $r->print($analysis_html);
766: return;
767: }
768: #
769: $analysis_html.='<table>';
770: for (my $plot_num = 1;$plot_num<=$ENV{'form.NumPlots'};$plot_num++) {
771: # classify data ->correct foil -> selected foil
772: my ($restriction_function,
773: $correct_foil_title,$incorrect_foil_title,
774: $pre_graph_text,$post_graph_text,
775: $no_data_text,@extra_data);
776: if ($ENV{'form.AnalyzeOver'} eq 'tries') {
777: $restriction_function = sub {($_[0]->{'tries'} == $plot_num?1:0)};
778: $correct_foil_title = 'Attempt '.$plot_num;
779: $incorrect_foil_title = 'Attempt '.$plot_num;
780: $pre_graph_text =
781: 'Attempt [_1], [_2] submissions, [_3] correct, [_4] incorrect';
782: $post_graph_text = '';
783: $no_data_text = 'No data exists for attempt [_1]';
784: } elsif ($ENV{'form.AnalyzeOver'} eq 'time') {
785: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
786: ('startdate_'.$plot_num);
787: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
788: ('enddate_'.$plot_num);
789: ($starttime,$endtime) = &ensure_start_end_times
790: ($starttime,$endtime,
791: &get_time_from_row($response_data->[0]),
792: &get_time_from_row($response_data->[-1]),
793: $plot_num);
794: $pre_graph_text =
795: 'Data from [_6] to [_7]<br /> [_2] submissions from [_5] students, [_3] correct, [_4] incorrect';
796: $extra_data[0] = &Apache::lonlocal::locallocaltime($starttime);
797: $extra_data[1] = &Apache::lonlocal::locallocaltime($endtime);
798: #
799: $post_graph_text =
800: &mt('Start time: [_1]',
801: &Apache::lonhtmlcommon::date_setter
802: ('Statistics','startdate_'.$plot_num,$starttime)).
803: '<br />'.
804: &mt('End time: [_1]',
805: &Apache::lonhtmlcommon::date_setter
806: ('Statistics','enddate_'.$plot_num,$endtime));
807: $restriction_function =
808: sub {
809: my $t = $_[0]->{'timestamp'};
810: if ($t >= $starttime && $t < $endtime) {
811: return 1;
812: } else {
813: return 0;
814: }
815: };
816: $no_data_text = 'No data for [_5] to [_6]';
817: }
818: my $foil_choice_data =
819: &classify_response_data($response_data,$correct,
820: $restriction_function);
821: # &Apache::lonstathelpers::log_hash_ref($foil_choice_data);
822: my $answers;
823: if (ref($correct)) {
824: my %tmp;
825: foreach my $foil (values(%$correct)) {
826: $tmp{$foil}++;
827: }
828: $answers = [keys(%tmp)];
829: } else {
830: $answers = [$correct];
831: }
832: # Concept Plot
833: my $concept_plot = '';
834: if (scalar(@$concepts) > 1) {
835: $concept_plot = &RR_concept_plot($concepts,$foil_choice_data,
836: 'Correct Concepts');
837: }
838: # % Choosing plot
839: my $choice_plot = &RR_create_percent_selected_plot
840: ($concepts,$foils,$foil_choice_data,$correct_foil_title);
841: # for each correct foil, how did they mark it? (stacked bar graph)
842: my ($stacked_plot,$count_by_foil);
843: if ($problem_analysis->{'answercomputed'} || $num_true > 1) {
844: ($stacked_plot,$count_by_foil) =
845: &RR_create_stacked_selection_plot($foils,$foil_choice_data,
846: $incorrect_foil_title,
847: \%true_foils);
848: }
849: #
850: if ($concept_plot ne '' ||
851: $choice_plot ne '' ||
852: $stacked_plot ne '') {
853: my $correct = $foil_choice_data->{'_correct'};
854: if (! defined($correct) || $correct eq '') {
855: $correct = 0;
856: }
857: my $incorrect =
858: $analysis_html.= '<tr><td colspan="4" align="center">'.
859: '<font size="+1">'.
860: &mt($pre_graph_text,
861: $plot_num,$foil_choice_data->{'_count'},
862: $correct,
863: $foil_choice_data->{'_count'}-$correct,
864: $foil_choice_data->{'_students'},
865: @extra_data).
866: '</td></tr>'.$/;
867: $analysis_html.=
868: '<tr>'.
869: '<td>'.$concept_plot.'</td>'.
870: '<td>'.$choice_plot.'</td>';
871: if ($stacked_plot ne '') {
872: $analysis_html .=
873: '<td>'.$stacked_plot.'</td>'.
874: '<td>'.&build_foil_key($foils,$count_by_foil).'</td>';
875: } else {
876: $analysis_html .= ('<td></td>'x2);
877: }
878: $analysis_html.='</tr>'.$/;
879: if (defined($post_graph_text)) {
880: $analysis_html.= '<tr><td colspan="4" align="center">'.
881: $post_graph_text.'</td></tr>'.$/;
882: }
883: } elsif ($no_data_text ne '') {
884: $analysis_html.='<tr><td colspan="4" align="center">'.
885: &mt($no_data_text,
886: $plot_num,$foil_choice_data->{'_count'},
887: $correct,
888: $foil_choice_data->{'_count'}-$correct,
889: @extra_data);
890: if (defined($post_graph_text)) {
891: $analysis_html.='<br />'.$post_graph_text;
892: }
893: $analysis_html.='</td></tr>'.$/;
894: }
895: } # end of loop for plots
896: $analysis_html.='</table>';
897: $r->print($analysis_html);
898: }
899:
900: sub ensure_start_end_times {
901: my ($start,$end,$first,$last,$plot_num) = @_;
902: if (! defined($start) || ! defined($end)) {
903: my $sec_in_day = 86400;
904: my ($sday,$smon,$syear) =
905: (localtime($last - $sec_in_day*($plot_num-1)))[3..5];
906: $start = &Time::Local::timelocal(0,0,0,$sday,$smon,$syear);
907: $end = $start + $sec_in_day;
908: if ($plot_num == $ENV{'form.NumPlots'}) {
909: $start = $first;
910: }
911: }
912: return ($start,$end);
913: }
914:
915: sub RR_concept_plot {
916: my ($concepts,$foil_data,$title) = @_;
917: #
918: my %correct_by_concept;
919: my %incorrect_by_concept;
920: my %true;
921: foreach my $concept (@$concepts) {
922: foreach my $foil (@{$concept->{'foils'}}) {
923: next if (! exists($foil_data->{$foil}));
924: foreach my $choice (keys(%{$foil_data->{$foil}})) {
925: if ($choice eq $foil) {
926: $correct_by_concept{$concept->{'name'}} +=
927: $foil_data->{$foil}->{$choice};
928: } else {
929: $incorrect_by_concept{$concept->{'name'}} +=
930: $foil_data->{$foil}->{$choice};
931: }
932: }
933: }
934: }
935: #
936: # need arrays for incorrect and correct because we want to use different
937: # colors for them
938: my @correct;
939: #
940: my $total =0;
941: for (my $i=0;$i<scalar(@$concepts);$i++) {
942: my $concept = $concepts->[$i];
943: $correct[$i] = $correct_by_concept{$concept->{'name'}};
944: $total += $correct_by_concept{$concept->{'name'}}+
945: $incorrect_by_concept{$concept->{'name'}};
946: }
947: if ($total == 0) { return ''; };
948: for (my $i=0;$i<=$#correct;$i++) {
949: $correct[$i] = sprintf('%0f',$correct[$i]/$total*100);
950: }
951: my $xlabel = 'concept';
952: my $plot= &Apache::loncommon::DrawBarGraph($title,
953: $xlabel,
954: 'Percent Choosing',
955: 100,
956: ['#33ff00','#ff3300'],
957: undef,
958: \@correct);
959: return $plot;
960: }
961:
962: sub RR_create_percent_selected_plot {
963: my ($concepts,$foils,$foil_data,$title) = @_;
964: #
965: if ($foil_data->{'_count'} == 0) { return ''; };
966: my %correct_selections;
967: my %incorrect_selections;
968: foreach my $foil (@$foils) {
969: # foil_data has format $foil_data->{true_foil}->{selected foil}=count
970: next if (! exists($foil_data->{$foil}));
971: while (my ($f,$count)= each(%{$foil_data->{$foil}})) {
972: if ($f eq $foil) {
973: $correct_selections{$foil} += $count;
974: } else {
975: $incorrect_selections{$f} += $count;
976: }
977: }
978: }
979: #
980: # need arrays for incorrect and correct because we want to use different
981: # colors for them
982: my @correct;
983: my @incorrect;
984: #
985: my $total = $foil_data->{'_count'};
986: for (my $i=0;$i<scalar(@$foils);$i++) {
987: my $foil = $foils->[$i];
988: $correct[$i] = $correct_selections{$foil};
989: $incorrect[$i] = $incorrect_selections{$foil};
990: }
991: for (my $i=0;$i<=$#correct;$i++) {
992: $correct[$i] = sprintf('%2f',$correct[$i]/$total*100);
993: }
994: for (my $i=0;$i<=$#incorrect;$i++) {
995: $incorrect[$i] = sprintf('%2f',$incorrect[$i]/$total*100);
996: }
997: #
998: # Put a blank in the data sets between concepts, if there are concepts
999: my @labels;
1000: if (defined($concepts) && scalar(@$concepts) > 1) {
1001: my @new_correct;
1002: my @new_incorrect;
1003: my $foil_count = 0;
1004: foreach my $concept (@$concepts) {
1005: foreach (@{$concept->{'foils'}}) {
1006: push(@new_correct, $correct[$foil_count]);
1007: push(@new_incorrect,$incorrect[$foil_count]);
1008: push(@labels,++$foil_count);
1009: }
1010: push(@new_correct,'');
1011: push(@new_incorrect,'');
1012: push(@labels,'');
1013: }
1014: @correct = @new_correct;
1015: @incorrect = @new_incorrect;
1016: } else {
1017: @labels = (1 .. scalar(@correct));
1018: }
1019: #
1020: my $xlabel = 'foil chosen';
1021: my $plot= &Apache::loncommon::DrawBarGraph($title,
1022: $xlabel,
1023: 'Percent Choosing',
1024: 100,
1025: ['#33ff00','#ff3300'],
1026: \@labels,
1027: \@correct,
1028: \@incorrect);
1029: return $plot;
1030: }
1031:
1032: sub RR_create_stacked_selection_plot {
1033: my ($foils,$foil_data,$title,$true_foils)=@_;
1034: #
1035: my @dataset; # array of array refs - multicolor rows $datasets[row]->[col]
1036: my @labels;
1037: my $count;
1038: my %column; # maps foil name to column in @datasets
1039: for (my $i=0;$i<scalar(@$foils);$i++) {
1040: my $foil = $foils->[$i];
1041: if (defined($true_foils) && scalar(keys(%$true_foils)) > 0 ) {
1042: next if (! $true_foils->{$foil} );
1043: push(@labels,$i+1);
1044: } else {
1045: next if (! exists($foil_data->{$foil}));
1046: push(@labels,$i+1);
1047: }
1048: next if (! exists($foil_data->{$foils->[$i]}));
1049: $column{$foil}= $count++;
1050: for (my $j=0;$j<scalar(@$foils);$j++) {
1051: my $value = 0;
1052: if ($i != $j ) {
1053: $value += $foil_data->{$foil}->{$foils->[$j]};
1054: }
1055: $dataset[$j]->[$column{$foil}]=$value;
1056: }
1057: }
1058: #
1059: return '' if (! scalar(keys(%column)));
1060: #
1061: my $grand_total = 0;
1062: my %count_per_foil;
1063: while (my ($foil,$bar) = each (%column)) {
1064: my $bar_total = 0;
1065: for (my $j=0;$j<scalar(@dataset);$j++) {
1066: $bar_total += $dataset[$j]->[$bar];
1067: }
1068: next if ($bar_total == 0);
1069: for (my $j=0;$j<scalar(@dataset);$j++) {
1070: $dataset[$j]->[$bar] =
1071: sprintf('%2f',$dataset[$j]->[$bar]/$bar_total * 100);
1072: }
1073: $count_per_foil{$foil}=' ( '.$bar_total.' )';
1074: $grand_total += $bar_total;
1075: }
1076: if ($grand_total == 0) {
1077: return ('',undef);
1078: }
1079: my @empty_row = ();
1080: foreach (@{$dataset[0]}) {
1081: push(@empty_row,0);
1082: }
1083: #
1084: my $graph = &Apache::loncommon::DrawBarGraph
1085: ($title,'Correct Foil','foils chosen Incorrectly',
1086: 100,$plotcolors,\@labels,\@empty_row,@dataset);
1087: return ($graph,\%count_per_foil);
1088: }
1089:
1090:
1091: #########################################################
1092: #########################################################
1093: ##
1094: ## Misc routines
1095: ##
1096: #########################################################
1097: #########################################################
1098:
1099: # if $correct is a hash ref, it is assumed to be indexed by student names.
1100: # the values are assumed to be hash refs with a key of 'answer'.
1101: sub classify_response_data {
1102: my ($full_row_data,$correct,$function) = @_;
1103: my %submission_data;
1104: my %students;
1105: my $max=0;
1106: foreach my $row (@$full_row_data) {
1107: my %subm = &hashify_attempt($row);
1108: if (ref($correct) eq 'HASH') {
1109: $subm{'correct'} = $correct->{$subm{'student'}};
1110: } else {
1111: $subm{'correct'} = $correct;
1112: }
1113: $subm{'submission'} =~ s/=\d+\s*$//;
1114: if (&$function(\%subm)) {
1115: $students{$subm{'student'}}++;
1116: $submission_data{'_count'}++;
1117: if (&submission_is_correct($subm{'award'})) {
1118: $submission_data{'_correct'}++;
1119: }
1120:
1121: if($max<++$submission_data{$subm{'correct'}}->{$subm{'submission'}}) {
1122: $max=$submission_data{$subm{'correct'}}->{$subm{'submission'}};
1123: }
1124: }
1125: }
1126: $submission_data{'_max'} = $max;
1127: $submission_data{'_students'}=scalar(keys(%students));
1128: return \%submission_data;
1129: }
1130:
1131:
1132: #########################################################
1133: #########################################################
1134: ##
1135: ## Option Response Routines
1136: ##
1137: #########################################################
1138: #########################################################
1139: sub OptionResponseAnalysis {
1140: my ($r,$problem,$problem_data,$Students) = @_;
1141: my ($resource,$respid) = ($problem->{'resource'},
1142: $problem->{'respid'});
1143: # Note: part data is not needed.
1144: my $PerformanceData = &Apache::loncoursedata::get_response_data
1145: (\@Apache::lonstatistics::SelectedSections,
1146: $Apache::lonstatistics::enrollment_status,
1147: $resource->{'symb'},$respid);
1148: if (! defined($PerformanceData) ||
1149: ref($PerformanceData) ne 'ARRAY' ) {
1150: $r->print('<h2>'.
1151: &mt('There is no student data for this problem.').
1152: '</h2>');
1153: } else {
1154: $r->rflush();
1155: if ($ENV{'form.AnalyzeOver'} eq 'tries') {
1156: my $analysis_html = &OR_tries_analysis($r,
1157: $PerformanceData,
1158: $problem_data);
1159: $r->print($analysis_html);
1160: $r->rflush();
1161: } elsif ($ENV{'form.AnalyzeOver'} eq 'time') {
1162: my $analysis_html = &OR_time_analysis($PerformanceData,
1163: $problem_data);
1164: $r->print($analysis_html);
1165: $r->rflush();
1166: } else {
1167: $r->print('<h2>'.
1168: &mt('The analysis you have selected is '.
1169: 'not supported at this time').
1170: '</h2>');
1171: }
1172: }
1173: }
1174:
1175: #########################################################
1176: #
1177: # Option Response: tries Analysis
1178: #
1179: #########################################################
1180: sub OR_tries_analysis {
1181: my ($r,$PerformanceData,$ORdata) = @_;
1182: my $mintries = 1;
1183: my $maxtries = $ENV{'form.NumPlots'};
1184: my ($table,$Foils,$Concepts) = &build_foil_index($ORdata);
1185: if (! defined($Concepts)) {
1186: $Concepts = [];
1187: }
1188: my %response_data = &OR_analyze_by_tries($r,$PerformanceData,
1189: $mintries,$maxtries);
1190: my $analysis = '';
1191: #
1192: # Compute the data necessary to make the plots
1193: my @foil_plot;
1194: my @concept_data;
1195: for (my $j=0;$j<=scalar(@$Concepts);$j++) {
1196: my $concept = $Concepts->[$j];
1197: foreach my $foilid (@{$concept->{'foils'}}) {
1198: for (my $try=$mintries;$try<=$maxtries;$try++) {
1199: # concept analysis data
1200: $concept_data[$j]->[$try]->{'_correct'} +=
1201: $response_data{$foilid}->[$try]->{'_correct'};
1202: $concept_data[$j]->[$try]->{'_total'} +=
1203: $response_data{$foilid}->[$try]->{'_total'};
1204: #
1205: # foil analysis data
1206: if ($response_data{$foilid}->[$try]->{'_total'} == 0) {
1207: push(@{$foil_plot[$try]->{'_correct'}},0);
1208: } else {
1209: push(@{$foil_plot[$try]->{'_correct'}},
1210: 100*$response_data{$foilid}->[$try]->{'_correct'}/
1211: $response_data{$foilid}->[$try]->{'_total'});
1212: }
1213: foreach my $option (@{$ORdata->{'_Options'}}) {
1214: push(@{$foil_plot[$try]->{'_total'}},
1215: $response_data{$foilid}->[$try]->{'_total'});
1216: if ($response_data{$foilid}->[$try]->{'_total'} == 0) {
1217: push (@{$foil_plot[$try]->{$option}},0);
1218: } else {
1219: if ($response_data{$foilid}->[$try]->{'_total'} ==
1220: $response_data{$foilid}->[$try]->{'_correct'}) {
1221: push(@{$foil_plot[$try]->{$option}},0);
1222: } else {
1223: push (@{$foil_plot[$try]->{$option}},
1224: 100 *
1225: $response_data{$foilid}->[$try]->{$option} /
1226: ($response_data{$foilid}->[$try]->{'_total'}
1227: -
1228: $response_data{$foilid}->[$try]->{'_correct'}
1229: ));
1230: }
1231: }
1232: } # End of foreach my $option
1233: }
1234: } # End of foreach my $foilid
1235: } # End of concept loops
1236: #
1237: # Build a table for the plots
1238: my $analysis_html = "<br /><table>\n";
1239: my $optionkey = &build_option_index($ORdata);
1240: my $num_concepts = 1;
1241: if (defined($Concepts)) { $num_concepts = scalar(@$Concepts); }
1242: #
1243: for (my $try=$mintries;$try<=$maxtries;$try++) {
1244: if (! defined($response_data{'_total'}->[$try]) ||
1245: $response_data{'_total'}->[$try] == 0) {
1246: if ($try > 1) {
1247: $analysis_html.= '<tr><td align="center" colspan="4"><b>'.
1248: &mt('None of the selected students attempted the problem more than [_1] times.',$try-1).
1249: '</b></td></tr>';
1250: } else {
1251: $analysis_html.= '<tr><td colspan="4" align="center"><b>'.
1252: &mt('None of the selected students have attempted the problem').'</b></td></tr>';
1253: }
1254: last;
1255: }
1256: my $concept_graph='';
1257: if ($num_concepts > 1) {
1258: #
1259: # Create concept plot
1260: my @concept_plot_data;
1261: for (my $j=0;$j<=$#concept_data;$j++) {
1262: my $total = $concept_data[$j]->[$try]->{'_total'};
1263: if ($total == 0) {
1264: $concept_plot_data[$j] = 0;
1265: } else {
1266: $concept_plot_data[$j] = 100 *
1267: sprintf('%0.3f',
1268: $concept_data[$j]->[$try]->{'_correct'} /
1269: $total);
1270: }
1271: }
1272: #
1273: $concept_graph = &Apache::loncommon::DrawBarGraph
1274: ('Correct Concepts','Concept Number','Percent Correct',
1275: 100,$plotcolors,undef,\@concept_plot_data,{xskip=>1});
1276: }
1277: #
1278: # Create Foil Plots
1279: my $data_count = $response_data{'_total'}->[$try];
1280: my $correct = $response_data{'_correct'}->[$try];
1281: my @Datasets;
1282: foreach my $option ('_correct',@{$ORdata->{'_Options'}}) {
1283: next if (! exists($foil_plot[$try]->{$option}));
1284: push(@Datasets,$foil_plot[$try]->{$option});
1285: }
1286: #
1287: # Put a blank in the data set between concepts
1288: for (my $set =0;$set<=$#Datasets;$set++) {
1289: my @Data = @{$Datasets[$set]};
1290: my $idx = 0;
1291: foreach my $concept (@{$Concepts}) {
1292: foreach my $foilid (@{$concept->{'foils'}}) {
1293: $Datasets[$set]->[$idx++]=shift(@Data);
1294: }
1295: if ($concept->{'name'} ne $Concepts->[-1]->{'name'}) {
1296: $Datasets[$set]->[$idx++] = 0;
1297: }
1298: }
1299: }
1300: #
1301: # Set up the labels needed for the bar graph
1302: my @Labels;
1303: my $idx = 1;
1304: foreach my $concept (@{$Concepts}) {
1305: foreach my $foilid (@{$concept->{'foils'}}) {
1306: push(@Labels,$idx++);
1307: }
1308: push(@Labels,'');
1309: }
1310: #
1311: my $correct_graph = &Apache::loncommon::DrawBarGraph
1312: ('Correct Statements','Statement','% Answered Correct',
1313: 100,$plotcolors,\@Labels,$Datasets[0],{xskip=>1});
1314:
1315: #
1316: #
1317: next if (! defined($Datasets[0]));
1318: for (my $i=0; $i< scalar(@{$Datasets[0]});$i++) {
1319: $Datasets[0]->[$i]=0;
1320: }
1321: my $count = $response_data{'_total'}->[$try] -
1322: $response_data{'_correct'}->[$try];
1323: my $incorrect_graph = &Apache::loncommon::DrawBarGraph
1324: ('Incorrect Statements','Statement','% Chosen Incorrectly',
1325: 100,$plotcolors,\@Labels,@Datasets,{xskip=>1});
1326: $analysis_html.=
1327: '<tr><td colspan="4" align="center">'.
1328: '<font size="+1">'.
1329: &mt('Attempt [_1], [_2] submissions, [_3] correct, [_4] incorrect',
1330: $try,$data_count,$correct,$data_count-$correct).
1331: '</font>'.'</td></tr>'.$/.
1332: '<tr>'.
1333: '<td>'.$concept_graph.'</td>'.
1334: '<td>'.$correct_graph.'</td>'.
1335: '<td>'.$incorrect_graph.'</td>'.
1336: '<td>'.$optionkey.'<td>'.
1337: '</tr>'.$/;
1338: }
1339: $analysis_html .= "</table>\n";
1340: $table .= $analysis_html;
1341: return $table;
1342: }
1343:
1344: sub OR_analyze_by_tries {
1345: my ($r,$PerformanceData,$mintries,$maxtries) = @_;
1346: my %Trydata;
1347: $mintries = 1 if (! defined($mintries) || $mintries < 1);
1348: $maxtries = $mintries if (! defined($maxtries) || $maxtries < $mintries);
1349: my @students;
1350: foreach my $row (@$PerformanceData) {
1351: next if (! defined($row));
1352: my $tries = &get_tries_from_row($row);
1353: my %Row = &Process_OR_Row($row);
1354: next if (! %Row);
1355: my $student_id = $row->[&Apache::loncoursedata::RD_student_id()];
1356: $students[$tries]->{$student_id}++;
1357: while (my ($foilid,$href) = each(%Row)) {
1358: if (! ref($href)) {
1359: $Trydata{$foilid}->[$tries] += $href;
1360: next;
1361: }
1362: while (my ($option,$value) = each(%$href)) {
1363: $Trydata{$foilid}->[$tries]->{$option}+=$value;
1364: }
1365: }
1366: }
1367: for (my $try=$mintries;$try<=$maxtries;$try++) {
1368: $Trydata{'_studentcount'}->[$try] = scalar(keys(%{$students[$try]}));
1369: }
1370: return %Trydata;
1371: }
1372:
1373: #########################################################
1374: #
1375: # Option Response: Time Analysis
1376: #
1377: #########################################################
1378: sub OR_time_analysis {
1379: my ($performance_data,$ORdata) = @_;
1380: my ($table,$Foils,$Concepts) = &build_foil_index($ORdata);
1381: my $foilkey = &build_option_index($ORdata);
1382: my $num_concepts = 1;
1383: if (defined($Concepts)) { $num_concepts = scalar(@$Concepts); }
1384: #
1385: if ($num_concepts < 2) {
1386: $table = '<h3>'.
1387: &mt('Not enough data for concept analysis. '.
1388: 'Performing Foil Analysis').
1389: '</h3>'.$table;
1390: }
1391: #
1392: my $num_plots = $ENV{'form.NumPlots'};
1393: my $num_data = scalar(@$performance_data)-1;
1394: #
1395: my $current_index;
1396: $table .= "<table>\n";
1397: for (my $i=0;$i<$num_plots;$i++) {
1398: ##
1399: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
1400: ('startdate_'.$i);
1401: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
1402: ('enddate_'.$i);
1403: if (! defined($starttime) || ! defined($endtime)) {
1404: my $sec_in_day = 86400;
1405: my $last_sub_time = &get_time_from_row($performance_data->[-1]);
1406: my ($sday,$smon,$syear) =
1407: (localtime($last_sub_time - $sec_in_day*$i))[3..5];
1408: $starttime = &Time::Local::timelocal(0,0,0,$sday,$smon,$syear);
1409: $endtime = $starttime + $sec_in_day;
1410: if ($i == ($num_plots -1 )) {
1411: $starttime = &get_time_from_row($performance_data->[0]);
1412: }
1413: }
1414: $table .= '<tr><td colspan="4" align="center"><font size="+1">'.
1415: &mt('Data from [_1] to [_2]',
1416: &Apache::lonlocal::locallocaltime($starttime),
1417: &Apache::lonlocal::locallocaltime($endtime)).
1418: '</font></td></tr>'.$/;
1419: my $startdateform = &Apache::lonhtmlcommon::date_setter
1420: ('Statistics','startdate_'.$i,$starttime);
1421: my $enddateform = &Apache::lonhtmlcommon::date_setter
1422: ('Statistics','enddate_'.$i,$endtime);
1423: #
1424: my $begin_index;
1425: my $end_index;
1426: my $j;
1427: while (++$j < scalar(@$performance_data)) {
1428: last if (&get_time_from_row($performance_data->[$j])
1429: > $starttime);
1430: }
1431: $begin_index = $j;
1432: while ($j < scalar(@$performance_data)) {
1433: if (&get_time_from_row($performance_data->[$j]) > $endtime) {
1434: last;
1435: } else {
1436: $j++;
1437: }
1438: }
1439: $end_index = $j;
1440: ##
1441: my ($processed_time_data,$correct,$data_count,$student_count) =
1442: &OR_time_process_data($performance_data,$begin_index,$end_index);
1443: ##
1444: $table .= '<tr><td colspan="4" align="center"><font size="+1">'.
1445: &mt('[_1] submissions from [_2] students, [_3] correct, [_4] incorrect',
1446: $data_count,$student_count,$correct,$data_count-$correct).
1447: '</font></td></tr>'.$/;
1448: my $concept_correct_plot = '';
1449: if ($num_concepts > 1) {
1450: $concept_correct_plot =
1451: &OR_Concept_Time_Analysis($processed_time_data,
1452: $correct,$data_count,$student_count,
1453: $ORdata,$Concepts);
1454: }
1455: my ($foil_correct_plot,$foil_incorrect_plot) =
1456: &OR_Foil_Time_Analysis($processed_time_data,
1457: $correct,$data_count,$student_count,
1458: $ORdata,$Foils,$Concepts);
1459: $table .= '<tr>'.
1460: '<td>'.$concept_correct_plot.'</td>'.
1461: '<td>'.$foil_correct_plot.'</td>'.
1462: '<td>'.$foil_incorrect_plot.'</td>'.
1463: '<td align="left" valign="top">'.$foilkey.'</td></tr>'.$/;
1464: $table .= '<tr><td colspan="4" align="center">'.
1465: &mt('Start time: [_1]',$startdateform).'<br />'.
1466: &mt('End time: [_1]',$enddateform).'</td></tr>'.$/;
1467: $table.= '<tr><td colspan="4"> </td></tr>'.$/;
1468: }
1469: $table .= '</table>';
1470: #
1471: return $table;
1472: }
1473:
1474: sub OR_Foil_Time_Analysis {
1475: my ($processed_time_data,$correct,$data_count,$student_count,
1476: $ORdata,$Foils,$Concepts) = @_;
1477: if ($data_count <= 0) {
1478: return ('<h2>'.&mt('There is no data to plot').'</h2>','');
1479: }
1480: my $analysis_html;
1481: my @plotdata;
1482: my @labels;
1483: foreach my $concept (@{$Concepts}) {
1484: foreach my $foil (@{$concept->{'foils'}}) {
1485: push(@labels,scalar(@labels)+1);
1486: my $total = $processed_time_data->{$foil}->{'_total'};
1487: if ($total == 0) {
1488: push(@{$plotdata[0]},0);
1489: } else {
1490: push(@{$plotdata[0]},
1491: 100 * $processed_time_data->{$foil}->{'_correct'} / $total);
1492: }
1493: my $total_incorrect = $total - $processed_time_data->{$foil}->{'_correct'};
1494: for (my $i=0;$i<scalar(@{$ORdata->{'_Options'}});$i++) {
1495: my $option = $ORdata->{'_Options'}->[$i];
1496: if ($total_incorrect == 0) {
1497: push(@{$plotdata[$i+1]},0);
1498: } else {
1499: push(@{$plotdata[$i+1]},
1500: 100 * $processed_time_data->{$foil}->{$option} / $total_incorrect);
1501: }
1502: }
1503: }
1504: # Put in a blank one
1505: push(@labels,'');
1506: push(@{$plotdata[0]},0);
1507: for (my $i=0;$i<scalar(@{$ORdata->{'_Options'}});$i++) {
1508: push(@{$plotdata[$i+1]},0);
1509: }
1510: }
1511: #
1512: # Create the plot
1513: my $correct_plot = &Apache::loncommon::DrawBarGraph('Correct Statements',
1514: 'Statement Number',
1515: 'Percent Correct',
1516: 100,
1517: $plotcolors,
1518: undef,
1519: $plotdata[0],
1520: {xskip=>1});
1521: for (my $j=0; $j< scalar(@{$plotdata[0]});$j++) {
1522: $plotdata[0]->[$j]=0;
1523: }
1524: my $incorrect_plot =
1525: &Apache::loncommon::DrawBarGraph('Incorrect Statements',
1526: 'Statement Number',
1527: 'Incorrect Option Choice',
1528: 100,
1529: $plotcolors,
1530: undef,
1531: @plotdata,{xskip=>1});
1532: return ($correct_plot,$incorrect_plot);
1533: }
1534:
1535: sub OR_Concept_Time_Analysis {
1536: my ($processed_time_data,$correct,$data_count,$student_count,
1537: $ORdata,$Concepts) = @_;
1538: return '' if ($data_count == 0);
1539: #
1540: # Put the data in plottable form
1541: my @plotdata;
1542: foreach my $concept (@$Concepts) {
1543: my ($total,$correct);
1544: foreach my $foil (@{$concept->{'foils'}}) {
1545: $total += $processed_time_data->{$foil}->{'_total'};
1546: $correct += $processed_time_data->{$foil}->{'_correct'};
1547: }
1548: if ($total == 0) {
1549: push(@plotdata,0);
1550: } else {
1551: push(@plotdata,100 * $correct / $total);
1552: }
1553: }
1554: #
1555: # Create the plot
1556: return &Apache::loncommon::DrawBarGraph('Correct Concepts',
1557: 'Concept Number',
1558: 'Percent Correct',
1559: 100,
1560: $plotcolors,
1561: undef,
1562: \@plotdata,{xskip=>1});
1563: }
1564:
1565: sub OR_time_process_data {
1566: my ($performance_data,$begin_index,$end_index)=@_;
1567: my %processed_time_data;
1568: my %distinct_students;
1569: my ($correct,$data_count);
1570: if (($begin_index == $end_index) &&
1571: ($end_index != scalar(@$performance_data)-1)) {
1572: return undef;
1573: }
1574: # Be sure we include the last one if we are asked for it.
1575: # That we have to correct here (and not when $end_index is
1576: # given a value) should probably be considered a bug.
1577: if ($end_index == scalar(@$performance_data)-1) {
1578: $end_index++;
1579: }
1580: my $count;
1581: for (my $i=$begin_index;$i<$end_index;$i++) {
1582: my $attempt = $performance_data->[$i];
1583: $count++;
1584: next if (! defined($attempt));
1585: my %attempt = &Process_OR_Row($attempt);
1586: $data_count++;
1587: $correct += $attempt{'_correct'};
1588: $distinct_students{$attempt->[&Apache::loncoursedata::RD_student_id()]}++;
1589: while (my ($foilid,$href) = each(%attempt)) {
1590: if (! ref($href)) {
1591: $processed_time_data{$foilid} += $href;
1592: next;
1593: }
1594: while (my ($option,$value) = each(%$href)) {
1595: $processed_time_data{$foilid}->{$option}+=$value;
1596: }
1597: }
1598: }
1599: return (\%processed_time_data,$correct,$data_count,
1600: scalar(keys(%distinct_students)));
1601: }
1602:
1603: sub build_foil_index {
1604: my ($ORdata) = @_;
1605: return if (! exists($ORdata->{'_Foils'}));
1606: my %Foildata = %{$ORdata->{'_Foils'}};
1607: my @Foils = sort(keys(%Foildata));
1608: my %Concepts;
1609: foreach my $foilid (@Foils) {
1610: push(@{$Concepts{$Foildata{$foilid}->{'_Concept'}}},
1611: $foilid);
1612: }
1613: undef(@Foils);
1614: # Having gathered the concept information in a hash, we now translate it
1615: # into an array because we need to be consistent about order.
1616: # Also put the foils in order, too.
1617: my $sortfunction = sub {
1618: my %Numbers = (one => 1,
1619: two => 2,
1620: three => 3,
1621: four => 4,
1622: five => 5,
1623: six => 6,
1624: seven => 7,
1625: eight => 8,
1626: nine => 9,
1627: ten => 10,);
1628: my $a1 = lc($a);
1629: my $b1 = lc($b);
1630: if (exists($Numbers{$a1})) {
1631: $a1 = $Numbers{$a1};
1632: }
1633: if (exists($Numbers{$b1})) {
1634: $b1 = $Numbers{$b1};
1635: }
1636: if (($a1 =~/^\d+$/) && ($b1 =~/^\d+$/)) {
1637: return $a1 <=> $b1;
1638: } else {
1639: return $a1 cmp $b1;
1640: }
1641: };
1642: my @Concepts;
1643: foreach my $concept (sort $sortfunction (keys(%Concepts))) {
1644: if (! defined($Concepts{$concept})) {
1645: $Concepts{$concept}=[];
1646: # next;
1647: }
1648: push(@Concepts,{ name => $concept,
1649: foils => [@{$Concepts{$concept}}]});
1650: push(@Foils,(@{$Concepts{$concept}}));
1651: }
1652: #
1653: # Build up the table of row labels.
1654: my $table = '<table border="1" >'."\n";
1655: if (@Concepts > 1) {
1656: $table .= '<tr>'.
1657: '<th>'.&mt('Concept Number').'</th>'.
1658: '<th>'.&mt('Concept').'</th>'.
1659: '<th>'.&mt('Foil Number').'</th>'.
1660: '<th>'.&mt('Foil Name').'</th>'.
1661: '<th>'.&mt('Foil Text').'</th>'.
1662: '<th>'.&mt('Correct Value').'</th>'.
1663: "</tr>\n";
1664: } else {
1665: $table .= '<tr>'.
1666: '<th>'.&mt('Foil Number').'</th>'.
1667: '<th>'.&mt('Foil Name').'</th>'.
1668: '<th>'.&mt('Foil Text').'</th>'.
1669: '<th>'.&mt('Correct Value').'</th>'.
1670: "</tr>\n";
1671: }
1672: my $conceptindex = 1;
1673: my $foilindex = 1;
1674: foreach my $concept (@Concepts) {
1675: my @FoilsInConcept = @{$concept->{'foils'}};
1676: my $firstfoil = shift(@FoilsInConcept);
1677: if (@Concepts > 1) {
1678: $table .= '<tr>'.
1679: '<td>'.$conceptindex.'</td>'.
1680: '<td>'.&HTML::Entities::encode($concept->{'name'},'<>&"').'</td>'.
1681: '<td>'.$foilindex++.'</td>'.
1682: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'name'},'<>&"').'</td>'.
1683: '<td>'.$Foildata{$firstfoil}->{'text'}.'</td>'.
1684: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'value'},'<>&"').'</td>'.
1685: "</tr>\n";
1686: } else {
1687: $table .= '<tr>'.
1688: '<td>'.$foilindex++.'</td>'.
1689: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'name'},'<>&"').'</td>'.
1690: '<td>'.$Foildata{$firstfoil}->{'text'}.'</td>'.
1691: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'value'},'<>&"').'</td>'.
1692: "</tr>\n";
1693: }
1694: foreach my $foilid (@FoilsInConcept) {
1695: if (@Concepts > 1) {
1696: $table .= '<tr>'.
1697: '<td></td>'.
1698: '<td></td>'.
1699: '<td>'.$foilindex.'</td>'.
1700: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'name'},'<>&"').'</td>'.
1701: '<td>'.$Foildata{$foilid}->{'text'}.'</td>'.
1702: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'value'},'<>&"').'</td>'.
1703: "</tr>\n";
1704: } else {
1705: $table .= '<tr>'.
1706: '<td>'.$foilindex.'</td>'.
1707: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'name'},'<>&"').'</td>'.
1708: '<td>'.$Foildata{$foilid}->{'text'}.'</td>'.
1709: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'value'},'<>&"').'</td>'.
1710: "</tr>\n";
1711: }
1712: } continue {
1713: $foilindex++;
1714: }
1715: } continue {
1716: $conceptindex++;
1717: }
1718: $table .= "</table>\n";
1719: #
1720: # Build option index with color stuff
1721: return ($table,\@Foils,\@Concepts);
1722: }
1723:
1724: sub build_option_index {
1725: my ($ORdata)= @_;
1726: my $table = "<table>\n";
1727: my $optionindex = 0;
1728: my @Rows;
1729: foreach my $option (&mt('correct option chosen'),@{$ORdata->{'_Options'}}) {
1730: my $color = $plotcolors->[$optionindex++];
1731: push (@Rows,
1732: '<tr>'.
1733: '<td bgcolor="'.$color.'">'.
1734: '<font color="'.$color.'">'.('*'x3).'</font>'.'</td>'.
1735: '<td>'.&HTML::Entities::encode($option,'<>&"').'</td>'.
1736: "</tr>\n");
1737: }
1738: shift(@Rows); # Throw away 'correct option chosen' color
1739: $table .= join('',reverse(@Rows));
1740: $table .= "</table>\n";
1741: }
1742:
1743: sub build_foil_key {
1744: my ($foils,$extra_data)= @_;
1745: if (! defined($extra_data)) { $extra_data = {}; }
1746: my $table = "<table>\n";
1747: my $foil_index = 0;
1748: my @rows;
1749: foreach my $foil (&mt('correct foil chosen'),@{$foils}) {
1750: my $color = $plotcolors->[$foil_index++];
1751: push (@rows,
1752: '<tr>'.
1753: '<td bgcolor="'.$color.'" class="key">'.
1754: '<font color="'.$color.'">'.('*'x4).'</font></td>'.
1755: '<td>'.&HTML::Entities::encode($foil,'<>&"').
1756: (' 'x2).$extra_data->{$foil}.'</td>'.
1757: "</tr>\n");
1758: }
1759: shift(@rows); # Throw away 'correct foil chosen' color
1760: $table .= join('',reverse(@rows));
1761: $table .= "</table>\n";
1762: }
1763:
1764: #########################################################
1765: #########################################################
1766: ##
1767: ## Generic Interface Routines
1768: ##
1769: #########################################################
1770: #########################################################
1771: sub CreateInterface {
1772: ##
1773: ## Environment variable initialization
1774: if (! exists$ENV{'form.AnalyzeOver'}) {
1775: $ENV{'form.AnalyzeOver'} = 'tries';
1776: }
1777: ##
1778: ## Build the menu
1779: my $Str = '';
1780: $Str .= &Apache::lonhtmlcommon::breadcrumbs
1781: (undef,'Detailed Problem Analysis');
1782: $Str .= '<table cellspacing="5">'."\n";
1783: $Str .= '<tr>';
1784: $Str .= '<td align="center"><b>'.&mt('Sections').'</b></td>';
1785: $Str .= '<td align="center"><b>'.&mt('Enrollment Status').'</b></td>';
1786: # $Str .= '<td align="center"><b>'.&mt('Sequences and Folders').'</b></td>';
1787: $Str .= '<td align="center"> </td>';
1788: $Str .= '</tr>'."\n";
1789: ##
1790: ##
1791: $Str .= '<tr><td align="center">'."\n";
1792: $Str .= &Apache::lonstatistics::SectionSelect('Section','multiple',5);
1793: $Str .= '</td>';
1794: #
1795: $Str .= '<td align="center">';
1796: $Str .= &Apache::lonhtmlcommon::StatusOptions(undef,undef,5);
1797: $Str .= '</td>';
1798: #
1799: # $Str .= '<td align="center">';
1800: my $only_seq_with_assessments = sub {
1801: my $s=shift;
1802: if ($s->{'num_assess'} < 1) {
1803: return 0;
1804: } else {
1805: return 1;
1806: }
1807: };
1808: &Apache::lonstatistics::MapSelect('Maps','multiple,all',5,
1809: $only_seq_with_assessments);
1810: ##
1811: ##
1812: $Str .= '<td>';
1813: ##
1814: my $showprob_checkbox =
1815: '<input type="checkbox" name="show_prob" value="true" ';
1816: if ($ENV{'form.show_prob'} eq 'true') {
1817: $showprob_checkbox .= 'checked ';
1818: }
1819: $showprob_checkbox.= ' />';
1820: $Str.= '<nobr><label>'.
1821: &mt('Show problem [_1]',$showprob_checkbox).
1822: '</label></nobr><br />';
1823: ##
1824: my $analyze_selector = '<select name="AnalyzeOver" >';
1825: $analyze_selector .= '<option value="tries" ';
1826: if (! exists($ENV{'form.AnalyzeOver'}) ||
1827: $ENV{'form.AnalyzeOver'} eq 'tries'){
1828: # Default to tries
1829: $analyze_selector .= ' selected ';
1830: }
1831: $analyze_selector .= '>'.&mt('Tries').'</option>';
1832: $analyze_selector .= '<option value="time" ';
1833: $analyze_selector .= ' selected ' if ($ENV{'form.AnalyzeOver'} eq 'time');
1834: $analyze_selector .= '>'.&mt('Time').'</option>';
1835: $analyze_selector .= '</select>';
1836: $Str .= '<nobr><label>'.
1837: &mt('Analyze Over [_1] [_2]',
1838: $analyze_selector,
1839: &Apache::loncommon::help_open_topic('Analysis_Analyze_Over')).
1840: '</label></nobr><br />'.$/;
1841: ##
1842: my $numplots_selector = '<select name="NumPlots">';
1843: if (! exists($ENV{'form.NumPlots'})
1844: || $ENV{'form.NumPlots'} < 1
1845: || $ENV{'form.NumPlots'} > 20) {
1846: $ENV{'form.NumPlots'} = 5;
1847: }
1848: foreach my $i (1,2,3,4,5,6,7,8,10,15,20) {
1849: $numplots_selector .= '<option value="'.$i.'" ';
1850: if ($ENV{'form.NumPlots'} == $i) { $numplots_selector.=' selected '; }
1851: $numplots_selector .= '>'.$i.'</option>';
1852: }
1853: $numplots_selector .= '</select></nobr><br />';
1854: $Str .= '<nobr><label>'.&mt('Number of Plots [_1]',$numplots_selector).
1855: '</label></nobr>';
1856: ##
1857: $Str .= '<nobr><label>'.&mt('Status: [_1]',
1858: '<input type="text" '.
1859: 'name="stats_status" size="60" value="" />'
1860: ).
1861: '</label></nobr>';
1862: $Str .= '</td>';
1863: ##
1864: ##
1865: $Str .= '</tr>'."\n";
1866: $Str .= '</table>'."\n";
1867: return $Str;
1868: }
1869:
1870: #########################################################
1871: #########################################################
1872: ##
1873: ## Misc Option Response functions
1874: ##
1875: #########################################################
1876: #########################################################
1877: sub get_time_from_row {
1878: my ($row) = @_;
1879: if (ref($row)) {
1880: return $row->[&Apache::loncoursedata::RD_timestamp()];
1881: }
1882: return undef;
1883: }
1884:
1885: sub get_tries_from_row {
1886: my ($row) = @_;
1887: if (ref($row)) {
1888: return $row->[&Apache::loncoursedata::RD_tries()];
1889: }
1890: return undef;
1891: }
1892:
1893: sub hashify_attempt {
1894: my ($row) = @_;
1895: my %attempt;
1896: $attempt{'student'} = $row->[&Apache::loncoursedata::RD_sname()];
1897: $attempt{'tries'} = $row->[&Apache::loncoursedata::RD_tries()];
1898: $attempt{'submission'} = &Apache::lonnet::unescape($row->[&Apache::loncoursedata::RD_submission()]);
1899: $attempt{'award'} = $row->[&Apache::loncoursedata::RD_awarddetail()];
1900: $attempt{'timestamp'} = $row->[&Apache::loncoursedata::RD_timestamp()];
1901: return %attempt;
1902: }
1903:
1904: sub Process_OR_Row {
1905: my ($row) = @_;
1906: my %RowData;
1907: # my $student_id = $row->[&Apache::loncoursedata::RD_student_id()];
1908: my $award = $row->[&Apache::loncoursedata::RD_awarddetail()];
1909: my $grading = $row->[&Apache::loncoursedata::RD_response_eval()];
1910: my $submission = $row->[&Apache::loncoursedata::RD_submission()];
1911: my $time = $row->[&Apache::loncoursedata::RD_timestamp()];
1912: # my $tries = $row->[&Apache::loncoursedata::RD_tries()];
1913: return undef if ($award eq 'MISSING_ANSWER');
1914: if (&submission_is_correct($award)) {
1915: $RowData{'_correct'} = 1;
1916: }
1917: $RowData{'_total'} = 1;
1918: my @Foilgrades = split('&',$grading);
1919: my @Foilsubs = split('&',$submission);
1920: for (my $j=0;$j<=$#Foilgrades;$j++) {
1921: my ($foilid,$correct) = split('=',$Foilgrades[$j]);
1922: $foilid = &Apache::lonnet::unescape($foilid);
1923: my (undef,$submission) = split('=',$Foilsubs[$j]);
1924: if ($correct) {
1925: $RowData{$foilid}->{'_correct'}++;
1926: } else {
1927: $submission = &Apache::lonnet::unescape($submission);
1928: $RowData{$foilid}->{$submission}++;
1929: }
1930: $RowData{$foilid}->{'_total'}++;
1931: }
1932: return %RowData;
1933: }
1934:
1935: sub submission_is_correct {
1936: my ($award) = @_;
1937: if ($award =~ /(APPROX_ANS|EXACT_ANS)/) {
1938: return 1;
1939: } else {
1940: return 0;
1941: }
1942: }
1943:
1944: 1;
1945:
1946: __END__
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