1: # The LearningOnline Network with CAPA
2: #
3: # $Id: lonproblemanalysis.pm,v 1.107 2004/12/03 21:53:59 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 Spreadsheet::WriteExcel();
41: use capa;
42:
43: my $plotcolors = ['#33ff00',
44: '#0033cc', '#990000', '#aaaa66', '#663399', '#ff9933',
45: '#66ccff', '#ff9999', '#cccc33', '#660000', '#33cc66',
46: ];
47:
48: my @SubmitButtons = ({ name => 'PrevProblemAnalysis',
49: text => 'Previous Problem' },
50: { name => 'ProblemAnalysis',
51: text => 'Analyze Problem Again' },
52: { name => 'NextProblemAnalysis',
53: text => 'Next Problem' },
54: { name => 'break'},
55: { name => 'SelectAnother',
56: text => 'Choose a different Problem' },
57: { name => 'ExcelOutput',
58: text => 'Produce Excel Output' });
59:
60: sub BuildProblemAnalysisPage {
61: my ($r,$c)=@_;
62: #
63: my %Saveable_Parameters = ('Status' => 'scalar',
64: 'Section' => 'array',
65: 'NumPlots' => 'scalar',
66: 'AnalyzeOver' => 'scalar',
67: );
68: &Apache::loncommon::store_course_settings('problem_analysis',
69: \%Saveable_Parameters);
70: &Apache::loncommon::restore_course_settings('problem_analysis',
71: \%Saveable_Parameters);
72: #
73: &Apache::lonstatistics::PrepareClasslist();
74: #
75: $r->print(&CreateInterface());
76: #
77: my @Students = @Apache::lonstatistics::Students;
78: #
79: if (@Students < 1 && exists($ENV{'form.firstrun'})) {
80: $r->print('<h2>There are no students in the sections selected</h2>');
81: }
82: #
83: my @CacheButtonHTML =
84: &Apache::lonstathelpers::manage_caches($r,'Statistics','stats_status');
85: $r->rflush();
86: #
87: # Support for numerical and radio response isn't complete enough to
88: # include in 1.2 release.
89: my $problem_types = '(option|radiobutton|numerical)';
90: # my $problem_types = '.';#(option)';
91: if (exists($ENV{'form.problemchoice'}) &&
92: ! exists($ENV{'form.SelectAnother'})) {
93: foreach my $button (@SubmitButtons) {
94: if ($button->{'name'} eq 'break') {
95: $r->print("<br />\n");
96: } else {
97: $r->print('<input type="submit" name="'.$button->{'name'}.'" '.
98: 'value="'.&mt($button->{'text'}).'" />');
99: $r->print(' 'x5);
100: }
101: }
102: foreach my $html (@CacheButtonHTML) {
103: $r->print($html.(' 'x5));
104: }
105: #
106: $r->print('<hr />');
107: $r->rflush();
108: #
109: # Determine which problem we are to analyze
110: my $current_problem = &Apache::lonstathelpers::get_target_from_id
111: ($ENV{'form.problemchoice'});
112: #
113: my ($prev,$curr,$next) =
114: &Apache::lonstathelpers::get_prev_curr_next($current_problem,
115: $problem_types,
116: 'response',
117: );
118: if (exists($ENV{'form.PrevProblemAnalysis'}) && defined($prev)) {
119: $current_problem = $prev;
120: } elsif (exists($ENV{'form.NextProblemAnalysis'}) && defined($next)) {
121: $current_problem = $next;
122: } else {
123: $current_problem = $curr;
124: }
125: #
126: # Store the current problem choice and send it out in the form
127: $ENV{'form.problemchoice'} =
128: &Apache::lonstathelpers::make_target_id($current_problem);
129: $r->print('<input type="hidden" name="problemchoice" value="'.
130: $ENV{'form.problemchoice'}.'" />');
131: #
132: if (! defined($current_problem->{'resource'})) {
133: $r->print('resource is undefined');
134: } else {
135: my $resource = $current_problem->{'resource'};
136: $r->print('<h1>'.$resource->{'title'}.'</h1>');
137: $r->print('<h3>'.$resource->{'src'}.'</h3>');
138: if ($ENV{'form.show_prob'} eq 'true') {
139: $r->print(&Apache::lonstathelpers::render_resource($resource));
140: }
141: $r->rflush();
142: my %Data = &Apache::lonstathelpers::get_problem_data
143: ($resource->{'src'});
144: my $problem_data = $Data{$current_problem->{'part'}.
145: '.'.
146: $current_problem->{'respid'}};
147: if ($current_problem->{'resptype'} eq 'option') {
148: &OptionResponseAnalysis($r,$current_problem,
149: $problem_data,
150: \@Students);
151: } elsif ($current_problem->{'resptype'} eq 'radiobutton') {
152: &radio_response_analysis($r,$current_problem,
153: $problem_data,
154: \@Students);
155: } elsif ($current_problem->{'resptype'} eq 'numerical') {
156: &numerical_response_analysis($r,$current_problem,
157: $problem_data,\@Students);
158: } else {
159: $r->print('<h2>Analysis of '.$current_problem->{'resptype'}.' is not supported</h2>');
160: }
161: }
162: $r->print('<hr />');
163: } else {
164: $r->print('<input type="submit" name="ProblemAnalysis" value="'.
165: &mt('Analyze Problem').'" />');
166: $r->print(' 'x5);
167: $r->print('<h3>'.&mt('Please select a problem to analyze').'</h3>');
168: $r->print(&Apache::lonstathelpers::ProblemSelector
169: ($problem_types));
170: }
171: }
172:
173: #########################################################
174: #########################################################
175: ##
176: ## Numerical Response Routines
177: ##
178: #########################################################
179: #########################################################
180: sub numerical_response_analysis {
181: my ($r,$problem,$problem_analysis,$students) = @_;
182: my $c = $r->connection();
183: #
184: if ($ENV{'form.AnalyzeOver'} !~ /^(tries|time)$/) {
185: $r->print('Bad request');
186: }
187: #
188: my ($resource,$partid,$respid) = ($problem->{'resource'},
189: $problem->{'part'},
190: $problem->{'respid'});
191: # Gather student data
192: my $response_data = &Apache::loncoursedata::get_response_data
193: (\@Apache::lonstatistics::SelectedSections,
194: $Apache::lonstatistics::enrollment_status,
195: $resource->{'symb'},$respid);
196: #
197: $problem_analysis->{'answercomputed'} = 1;
198: if ($problem_analysis->{'answercomputed'}) {
199: my $answers =
200: &Apache::lonstathelpers::GetStudentAnswers($r,$problem,$students,
201: 'Statistics',
202: 'stats_status');
203: $r->print(&numerical_one_dimensional_plot($r,600,150,$answers));
204: }
205: #
206: if (ref($response_data) ne 'ARRAY') {
207: $r->print('<h2>'.
208: &mt('There is no submission data for this resource').
209: '</h2>');
210: return;
211: }
212: my $analysis_html = '<table>';
213: for (my $plot_num = 1;$plot_num<=$ENV{'form.NumPlots'};$plot_num++) {
214: my $restriction_function;
215: my $header_message;
216: my $stats_message;
217: my $post_message; # passed through &mt sooner rather than later
218: my $no_data_message;
219: my @extra_data;
220: if ($ENV{'form.AnalyzeOver'} eq 'tries') {
221: $restriction_function = sub {($_[0]->{'tries'} == $plot_num?1:0)};
222: $header_message = 'Attempt [_1]';
223: $stats_message =
224: '[_1] submissions, [_2] correct, [_3] incorrect';
225: $post_message = '';
226: $no_data_message = 'No data exists for attempt [_1]';
227: } else {
228: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
229: ('startdate_'.$plot_num);
230: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
231: ('enddate_'.$plot_num);
232: ($starttime,$endtime) = &ensure_start_end_times
233: ($starttime,$endtime,
234: &get_time_from_row($response_data->[0]),
235: &get_time_from_row($response_data->[-1]),
236: $plot_num);
237: $header_message = 'Data from [_2] to [_3]';
238: $extra_data[0] = &Apache::lonlocal::locallocaltime($starttime);
239: $extra_data[1] = &Apache::lonlocal::locallocaltime($endtime);
240: #
241: $stats_message =
242: '[_1] submissions from [_4] students, [_2] correct, [_3] incorrect';
243: #
244: $post_message =
245: &mt('Start time: [_1]',
246: &Apache::lonhtmlcommon::date_setter
247: ('Statistics','startdate_'.$plot_num,$starttime)).
248: '<br />'.
249: &mt('End time: [_1]',
250: &Apache::lonhtmlcommon::date_setter
251: ('Statistics','enddate_'.$plot_num,$endtime));
252: $restriction_function =
253: sub {
254: my $t = $_[0]->{'timestamp'};
255: if ($t >= $starttime && $t < $endtime) {
256: return 1;
257: } else {
258: return 0;
259: }
260: };
261: $no_data_message = 'No data for [_2] to [_3]';
262: }
263: #
264: my ($correct,$answers) =
265: &numerical_determine_answers($r,$resource,$partid,
266: $respid,$students);
267: if ($c->aborted()) { return; };
268: #
269: my $responses = &numerical_classify_responses($response_data,$correct,
270: $restriction_function);
271: if ($responses->{'_count'} == 0) {
272: $analysis_html.=
273: '<tr><td colspan="2"><font size="+1"><b>'.
274: &mt($no_data_message,$plot_num,@extra_data).
275: '</b></font></td></tr>';
276: } else {
277: $analysis_html.=
278: '<tr><td colspan="2" align="center"><font size="+1"><b>'.
279: &mt($header_message,$plot_num,@extra_data).
280: '</b></font></td></tr>'.
281: '<tr><td colspan="2" align="center">'.
282: &mt($stats_message,
283: $responses->{'_count'},
284: $responses->{'_correct'},
285: $responses->{'_count'}-$responses->{'_correct'},
286: $responses->{'_students'},
287: @extra_data).
288: '</td></tr>'.
289: '<tr>'.'<td valign="top" align="center">'.
290: &numerical_plot_percent($r,$responses).'</td>'.
291: '<td align="center" valign="top">'.
292: &numerical_plot_differences($r,$responses).'</td>'.
293: '</tr>';
294: }
295: if ($post_message ne '') {
296: $analysis_html .=
297: '<tr><td colspan="2">'.$post_message.'</td></tr>';
298: }
299: }
300: $analysis_html.='</table>';
301: $r->print($analysis_html);
302: #
303: return;
304: }
305:
306: sub numerical_plot_percent {
307: my ($r,$responses) = @_;
308: #
309: my $total = $responses->{'_count'};
310: return '' if ($total == 0);
311: my $minbin = 5;
312: while (my ($interval,$submissions) = each(%$responses)) {
313: next if ($interval =~ /^_/);
314: my ($ans,$ans_low,$ans_high) = split(" ",$interval);
315: my $low_percent = abs(100*($ans-$ans_low)/$ans);
316: my $high_percent = abs(100*($ans_high-$ans)/$ans);
317: if ($minbin > $high_percent) { $minbin = $high_percent; }
318: if ($minbin > $low_percent) { $minbin = $low_percent; }
319: }
320: #
321: my @bins;
322: if ($minbin < 1) {
323: @bins = ('0.1','0.5','1.0','1.5','2.0','2.5','3.0','4.0','5.0',10,20,50,100);
324: } elsif ($minbin < 2) {
325: @bins = ('0.5','1.0','1.5','2.0','2.5','3.0','4.0','5.0',10,20,50,100);
326: } elsif ($minbin < 5) {
327: @bins = (1,2,3,4,5,10,25,50,75,100,200);
328: } elsif ($minbin < 10) {
329: @bins = (2,4,6,8,10,12,15,20,25,30,50,75,100,200);
330: } else {
331: @bins = (5,10,15,20,25,30,50,75,100,200);
332: }
333: my @labels = (1..scalar(@bins));
334: #
335: my @correct;
336: my @incorrect;
337: my @count;
338: while (my ($interval,$submissions) = each(%$responses)) {
339: next if ($interval =~ /^_/);
340: my ($ans,$ans_low,$ans_high) = split(" ",$interval);
341: while (my ($submission,$counts) = each(%$submissions)) {
342: my ($correct_count,$incorrect_count) = @$counts;
343: my $scaled_value = abs(($submission-$ans)/$ans);
344: my $bin=0;
345: for ($bin=0;$bin<$#bins;$bin++) { # not <= for a reason
346: last if ($bins[$bin]>$scaled_value);
347: }
348: $correct[$bin]+=$correct_count;
349: $incorrect[$bin]+=$incorrect_count;
350: $count[$bin]+=$correct_count+$incorrect_count;
351: }
352: }
353: #
354: my @plot_correct;
355: my @plot_incorrect;
356: for (my $i=0;$i<=$#bins;$i++) {
357: $plot_correct[$i] = $correct[$i]*100/$total;
358: $plot_incorrect[$i] = $incorrect[$i]*100/$total;
359: }
360: my $title = &mt('Distribution by Percent');
361: my $graph = &Apache::loncommon::DrawBarGraph
362: ($title,'Percent difference from correct','Number of answers',
363: 100,['#33FF00','#FF3300'],\@labels,\@plot_correct,\@plot_incorrect,
364: {xskip=>1});
365: #
366: my $table = $graph.$/.
367: &numerical_bin_table(\@bins,\@labels,\@incorrect,\@correct,\@count).$/;
368: return $table;
369: }
370:
371: sub numerical_plot_differences {
372: my ($r,$responses) = @_;
373: #
374: my $total = $responses->{'_count'};
375: return '' if ($total == 0);
376: my $minbin = undef;
377: my $maxbin = undef;
378: while (my ($interval,$submissions) = each(%$responses)) {
379: next if ($interval =~ /^_/);
380: my ($ans,$ans_low,$ans_high) = split(" ",$interval);
381: my $low_diff = abs($ans-$ans_low);
382: my $high_diff = abs($ans_high-$ans);
383: if (! defined($maxbin)) { $maxbin = $low_diff;}
384: if (! defined($minbin)) { $minbin = $low_diff;}
385: #
386: if ($minbin > $high_diff) { $minbin = $high_diff; }
387: if ($minbin > $low_diff ) { $minbin = $low_diff; }
388: #
389: if ($maxbin < $high_diff) { $maxbin = $high_diff; }
390: if ($maxbin < $low_diff ) { $maxbin = $low_diff; }
391: }
392: #
393: my @bins;
394: my @labels;
395: # Hmmmm, should switch to absolute difference
396: for (my $i=1;$i<=20;$i++) {
397: push(@bins,$i*$minbin/2);
398: push(@labels,$i);
399: }
400: #
401: my @correct;
402: my @incorrect;
403: my @count;
404: while (my ($interval,$submissions) = each(%$responses)) {
405: next if ($interval =~ /^_/);
406: my ($ans,$ans_low,$ans_high) = split(" ",$interval);
407: while (my ($submission,$counts) = each(%$submissions)) {
408: my ($correct_count,$incorrect_count) = @$counts;
409: my $value = abs($submission-$ans);
410: my $bin=0;
411: for ($bin=0;$bin<$#bins;$bin++) { # not <= for a reason
412: last if ($bins[$bin]>$value);
413: }
414: $correct[$bin]+=$correct_count;
415: $incorrect[$bin]+=$incorrect_count;
416: $count[$bin]+=$correct_count+$incorrect_count;
417: }
418: }
419: #
420: my @plot_correct;
421: my @plot_incorrect;
422: for (my $i=0;$i<=$#bins;$i++) {
423: $plot_correct[$i] = $correct[$i]*100/$total;
424: $plot_incorrect[$i] = $incorrect[$i]*100/$total;
425: }
426: my $title = &mt('Distribution by Magnitude');
427: my $graph = &Apache::loncommon::DrawBarGraph
428: ($title,'magnitude difference from correct','Number of answers',
429: 100,['#33FF00','#FF3300'],\@labels,\@plot_correct,\@plot_incorrect,
430: {xskip=>1});
431: #
432: my $table = $graph.$/.
433: &numerical_bin_table(\@bins,\@labels,\@incorrect,\@correct,\@count).$/;
434: return $table;
435: }
436:
437: sub numerical_classify_responses {
438: &Apache::lonnet::logthis('--------------');
439: my ($full_row_data,$correct,$function) = @_;
440: my %submission_data;
441: my %students;
442: my $max=0;
443: foreach my $row (@$full_row_data) {
444: # &Apache::lonnet::logthis(' row = '.join(',',@$row));
445: my %subm = &hashify_attempt($row);
446: if (ref($correct) eq 'HASH') {
447: $subm{'correct'} = $correct->{$subm{'student'}}->{'answer'};
448: $subm{'unit'} = $correct->{$subm{'student'}}->{'unit'};
449: } else { # This probably never happens....
450: $subm{'correct'} = $correct->{'answer'};
451: $subm{'unit'} = $correct->{'unit'};
452: }
453: $subm{'submission'} =~ s/=\d+\s*$//;
454: if (&$function(\%subm)) {
455: my $scaled = '1';
456: my ($sname,$sdom) = split(':',$subm{'student'});
457: # Note that $subm{'unit'} is modified by the following call
458: # We do not use it again but you should be aware just in case.
459: # my ($myunit,$mysub) = ($subm{'unit'},$subm{'submission'});
460: # $myunit = 'm';
461: # # &Apache::lonnet::logthis($myunit);
462: # my $result =
463: # &capa::caparesponse_get_real_response($myunit,
464: # $mysub,
465: # \$scaled);
466: # # &Apache::lonnet::logthis(' '.$myunit.':'.$subm{'unit'}.
467: # # ' '.$mysub.':'.$subm{'submission'}.'; '.$result);
468: # next if (! defined($scaled));
469: # next if ($result ne '6');
470: # my $submission = $scaled;
471: my $submission = $subm{'submission'};
472: $students{$subm{'student'}}++;
473: if (&numerical_submission_is_correct($subm{'award'})) {
474: &Apache::lonnet::logthis('correct:'.$submission.':'.$subm{'correct'});
475: $submission_data{'_correct'}++;
476: $submission_data{'_count'}++;
477: $submission_data{$subm{'correct'}}->{$submission}->[0]++;
478: } elsif (&numerical_submission_is_incorrect($subm{'award'})) {
479: &Apache::lonnet::logthis('incorrect:'.$submission.':'.$subm{'correct'});
480: $submission_data{'_count'}++;
481: $submission_data{$subm{'correct'}}->{$submission}->[1]++;
482: }
483: my $value =
484: $submission_data{$subm{'correct'}}->{$submission}->[0]+
485: $submission_data{$subm{'correct'}}->{$submission}->[1];
486: if ($max < $value) { $max = $value; }
487: }
488: }
489: $submission_data{'_max'} = $max;
490: $submission_data{'_students'}=scalar(keys(%students));
491: return \%submission_data;
492: }
493:
494: sub numerical_submission_is_correct {
495: my ($award) = @_;
496: &Apache::lonnet::logthis('award = "'.$award.'"');
497: if ($award =~ /^(APPROX_ANS|EXACT_ANS)$/) {
498: return 1;
499: } else {
500: return 0;
501: }
502: }
503:
504: sub numerical_submission_is_incorrect {
505: my ($award) = @_;
506: if ($award =~ /^(INCORRECT)$/) {
507: return 1;
508: } else {
509: return 0;
510: }
511: }
512:
513: sub numerical_bin_table {
514: my ($bins,$labels,$incorrect,$correct,$count)=@_;
515: my $table =
516: '<table><tr><th>'.&mt('Bar').'</th>'.
517: '<th colspan="3">'.&mt('Range').'</th>'.
518: '<th>'.&mt('Incorrect').'</th>'.
519: '<th>'.&mt('Correct').'</th>'.
520: '<th>'.&mt('Count').'</th>'.
521: '</tr>'.$/;
522: for (my $i=0;$i<scalar(@{$bins});$i++) {
523: my $lownum;
524: if ($i == 0) {
525: $lownum = 0;
526: } else {
527: $lownum = $bins->[$i-1];
528: }
529: my $highnum = $bins->[$i];
530: $table .=
531: '<tr>'.
532: '<td>'.$labels->[$i].'</td>'.
533: '<td align="right">'.$lownum.'</td>'.
534: '<td> - </td>'.
535: '<td align="right">'.$highnum.'</td>'.
536: '<td align="right">'.$incorrect->[$i].'</td>'.
537: '<td align="right">'.$correct->[$i].'</td>'.
538: '<td align="right">'.$count->[$i].'</td>'.
539: '</tr>'.$/;
540: }
541: $table.= '</table>';
542: return $table;
543: }
544:
545: sub numerical_determine_answers {
546: my ($r,$resource,$partid,$respid,$students)=@_;
547: my $c = $r->connection();
548: #
549: # FIX ME: May need progress dialog updates
550: #
551: # Read in the cache (if it exists) before we start timing things.
552: &Apache::lonstathelpers::ensure_proper_cache($resource->{'symb'});
553: #
554: my $correct;
555: my %answers;
556: foreach my $student (@$students) {
557: last if ($c->aborted());
558: my $sname = $student->{'username'};
559: my $sdom = $student->{'domain'};
560: # analyze problem
561: my $analysis =
562: &Apache::lonstathelpers::analyze_problem_as_student($resource,
563: $sname,
564: $sdom);
565: # make the key
566: my $key = $partid.'.'.$respid;
567: $correct->{$sname.':'.$sdom}->{'answer'} =
568: $analysis->{$key.'.answer'}->[0];
569: $correct->{$sname.':'.$sdom}->{'unit'} =
570: $analysis->{$key.'.unit'}->[0];
571: $answers{$analysis->{$key.'.answer'}->[0]}++;
572: }
573: &Apache::lonstathelpers::write_analysis_cache();
574: return ($correct,\%answers);
575: }
576:
577: #
578: # Inputs: $r, $width, $height, $data
579: # $n = number of students
580: # $data = hashref of $answer => $frequency pairs
581: sub numerical_one_dimensional_plot {
582: my ($r,$width,$height,$data)=@_;
583: #
584: # Compute data -> image scaling factors
585: my $max_y = 0;
586: my $min_x = undef;
587: my $max_x = undef;
588: my $n = 0;
589: while (my ($answer,$count) = each(%$data)) {
590: $n+=$count;
591: $max_y = $count if ($max_y < $count);
592: if (! defined($min_x) || $answer < $min_x) {
593: $min_x = $answer;
594: }
595: if (! defined($max_x) || $answer > $max_x) {
596: $max_x = $answer;
597: }
598: }
599: #
600: my $min_max_difference = $max_x - $min_x;
601: if (! defined($min_max_difference) || $min_max_difference == 0) {
602: $min_max_difference = 1;
603: }
604: my $h_scale = ($width-10)/$min_max_difference;
605: #
606: my $ticscale = 5;
607: if ($max_y * $ticscale > $height/2) {
608: $ticscale = int($height/2/$max_y);
609: $ticscale = 1 if ($ticscale < 1);
610: }
611: #
612: # Create the plot
613: my $plot =
614: qq{<drawimage width="$width" height="$height" bgcolor="transparent" >};
615: while (my ($answer,$count) = each(%$data)) {
616: my $xloc = 5+$h_scale*($answer - $min_x);
617: my $top = $height/2-$count*$ticscale;
618: my $bottom = $height/2+$count*$ticscale;
619: $plot .= &line($xloc,$top,$xloc,$bottom,'888888',1);
620: }
621: #
622: # Put the scale on last to ensure it is on top of the data.
623: if ($min_x < 0 && $max_x > 0) {
624: my $circle_x = 5+$h_scale*abs($min_x); # '0' in data coordinates
625: my $r = 4;
626: $plot .= &line(5,$height/2,$circle_x-$r,$height/2,'000000',1);
627: $plot .= &circle($circle_x,$height/2,$r+1,'000000');
628: $plot .= &line($circle_x+$r,$height/2,$width-5,$height/2,'000000',1);
629: } else {
630: $plot .= &line(5,$height/2,$width-5,$height/2,'000000',1);
631: }
632: $plot .= '</drawimage>';
633: my $plotresult = &Apache::lonxml::xmlparse($r,'web',$plot);
634: my $result = '<table>'.
635: '<tr><td colspan="3" align="center">'.
636: '<font size="+2">'.&mt('Distribution of correct answers').'</font>'.
637: '<br />'.&mt('[_1] students, [_2] distinct correct answers',
638: $n,scalar(keys(%$data))).
639: '<br />'.&mt('Maximum number of coinciding values: [_1]',$max_y).
640: '</td></tr>'.
641: '<tr>'.
642: '<td valign="center">'.$min_x.'</td>'.
643: '<td>'.$plotresult.'</td>'.
644: '<td valign="center">'.$max_x.'</td>'.
645: '</tr>'.
646: '</table>';
647: return $result;
648: }
649:
650: ##
651: ## Helper subroutines for <drawimage>.
652: ## These should probably go somewhere more suitable soon.
653: sub line {
654: my ($x1,$y1,$x2,$y2,$color,$thickness) = @_;
655: return qq{<line x1="$x1" y1="$y1" x2="$x2" y2="$y2" color="$color" thickness="$thickness" />};
656: }
657:
658: sub text {
659: my ($x,$y,$color,$text,$font,$direction) = @_;
660: if (! defined($font) || $font !~ /^(tiny|small|medium|large|giant)$/) {
661: $font = 'medium';
662: }
663: if (! defined($direction) || $direction ne 'vertical') {
664: $direction = '';
665: }
666: return qq{<text x="$x" y="$y" color="$color" font="$font" direction="$direction" >$text</text>};
667: }
668:
669: sub rectangle {
670: my ($x1,$y1,$x2,$y2,$color,$thickness,$filled) = @_;
671: return qq{<rectangle x1="$x1" y1="$y1" x2="$x2" y2="$y2" color="$color" thickness="$thickness" filled="$filled" />};
672: }
673:
674: sub arc {
675: my ($x,$y,$width,$height,$start,$end,$color,$thickness,$filled)=@_;
676: return qq{<arc x="$x" y="$y" width="$width" height="$height" start="$start" end="$end" color="$color" thickness="$thickness" filled="$filled" />};
677: }
678:
679: sub circle {
680: my ($x,$y,$radius,$color,$thickness,$filled)=@_;
681: return &arc($x,$y,$radius,$radius,0,360,$color,$thickness,$filled);
682: }
683:
684: #########################################################
685: #########################################################
686: ##
687: ## Radio Response Routines
688: ##
689: #########################################################
690: #########################################################
691: sub radio_response_analysis {
692: my ($r,$problem,$problem_analysis,$students) = @_;
693: #
694: if ($ENV{'form.AnalyzeOver'} !~ /^(tries|time)$/) {
695: $r->print('Bad request');
696: }
697: #
698: my ($resource,$partid,$respid) = ($problem->{'resource'},
699: $problem->{'part'},
700: $problem->{'respid'});
701: #
702: my $analysis_html;
703: my $foildata = $problem_analysis->{'_Foils'};
704: my ($table,$foils,$concepts) = &build_foil_index($problem_analysis);
705: if (! defined($concepts)) {
706: $concepts = [];
707: }
708: #
709: my %true_foils;
710: my $num_true = 0;
711: if (! $problem_analysis->{'answercomputed'}) {
712: foreach my $foil (@$foils) {
713: if ($foildata->{$foil}->{'value'} eq 'true') {
714: $true_foils{$foil}++;
715: }
716: }
717: $num_true = scalar(keys(%true_foils));
718: }
719: #
720: $analysis_html .= $table;
721: # Gather student data
722: my $response_data = &Apache::loncoursedata::get_response_data
723: (\@Apache::lonstatistics::SelectedSections,
724: $Apache::lonstatistics::enrollment_status,
725: $resource->{'symb'},$respid);
726: my $correct; # either a hash reference or a scalar
727: if ($problem_analysis->{'answercomputed'} || scalar(@$concepts) > 1) {
728: # This takes a while for large classes...
729: &Apache::lonstathelpers::GetStudentAnswers($r,$problem,$students,
730: 'Statistics',
731: 'stats_status');
732: foreach my $student (@$students) {
733: my ($idx,@remainder) = split('&',$student->{'answer'});
734: my ($answer) = ($remainder[$idx]=~/^(.*)=([^=]*)$/);
735: $correct->{$student->{'username'}.':'.$student->{'domain'}}=
736: &Apache::lonnet::unescape($answer);
737: }
738: } else {
739: foreach my $foil (keys(%$foildata)) {
740: if ($foildata->{$foil}->{'value'} eq 'true') {
741: $correct = $foildata->{$foil}->{'name'};
742: }
743: }
744: }
745: #
746: if (! defined($response_data) || ref($response_data) ne 'ARRAY' ) {
747: $analysis_html = '<h2>'.
748: &mt('There is no submission data for this resource').
749: '</h2>';
750: $r->print($analysis_html);
751: return;
752: }
753: #
754: $analysis_html.='<table>';
755: for (my $plot_num = 1;$plot_num<=$ENV{'form.NumPlots'};$plot_num++) {
756: # classify data ->correct foil -> selected foil
757: my ($restriction_function,
758: $correct_foil_title,$incorrect_foil_title,
759: $pre_graph_text,$post_graph_text,
760: $no_data_text,@extra_data);
761: if ($ENV{'form.AnalyzeOver'} eq 'tries') {
762: $restriction_function = sub {($_[0]->{'tries'} == $plot_num?1:0)};
763: $correct_foil_title = 'Attempt '.$plot_num;
764: $incorrect_foil_title = 'Attempt '.$plot_num;
765: $pre_graph_text =
766: 'Attempt [_1], [_2] submissions, [_3] correct, [_4] incorrect';
767: $post_graph_text = '';
768: $no_data_text = 'No data exists for attempt [_1]';
769: } elsif ($ENV{'form.AnalyzeOver'} eq 'time') {
770: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
771: ('startdate_'.$plot_num);
772: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
773: ('enddate_'.$plot_num);
774: ($starttime,$endtime) = &ensure_start_end_times
775: ($starttime,$endtime,
776: &get_time_from_row($response_data->[0]),
777: &get_time_from_row($response_data->[-1]),
778: $plot_num);
779: $pre_graph_text =
780: 'Data from [_6] to [_7]<br /> [_2] submissions from [_5] students, [_3] correct, [_4] incorrect';
781: $extra_data[0] = &Apache::lonlocal::locallocaltime($starttime);
782: $extra_data[1] = &Apache::lonlocal::locallocaltime($endtime);
783: #
784: $post_graph_text =
785: &mt('Start time: [_1]',
786: &Apache::lonhtmlcommon::date_setter
787: ('Statistics','startdate_'.$plot_num,$starttime)).
788: '<br />'.
789: &mt('End time: [_1]',
790: &Apache::lonhtmlcommon::date_setter
791: ('Statistics','enddate_'.$plot_num,$endtime));
792: $restriction_function =
793: sub {
794: my $t = $_[0]->{'timestamp'};
795: if ($t >= $starttime && $t < $endtime) {
796: return 1;
797: } else {
798: return 0;
799: }
800: };
801: $no_data_text = 'No data for [_5] to [_6]';
802: }
803: my $foil_choice_data =
804: &classify_response_data($response_data,$correct,
805: $restriction_function);
806: # &Apache::lonstathelpers::log_hash_ref($foil_choice_data);
807: my $answers;
808: if (ref($correct)) {
809: my %tmp;
810: foreach my $foil (values(%$correct)) {
811: $tmp{$foil}++;
812: }
813: $answers = [keys(%tmp)];
814: } else {
815: $answers = [$correct];
816: }
817: # Concept Plot
818: my $concept_plot = '';
819: if (scalar(@$concepts) > 1) {
820: $concept_plot = &RR_concept_plot($concepts,$foil_choice_data,
821: 'Correct Concepts');
822: }
823: # % Choosing plot
824: my $choice_plot = &RR_create_percent_selected_plot
825: ($concepts,$foils,$foil_choice_data,$correct_foil_title);
826: # for each correct foil, how did they mark it? (stacked bar graph)
827: my ($stacked_plot,$count_by_foil);
828: if ($problem_analysis->{'answercomputed'} || $num_true > 1) {
829: ($stacked_plot,$count_by_foil) =
830: &RR_create_stacked_selection_plot($foils,$foil_choice_data,
831: $incorrect_foil_title,
832: \%true_foils);
833: }
834: #
835: if ($concept_plot ne '' ||
836: $choice_plot ne '' ||
837: $stacked_plot ne '') {
838: my $correct = $foil_choice_data->{'_correct'};
839: if (! defined($correct) || $correct eq '') {
840: $correct = 0;
841: }
842: my $incorrect =
843: $analysis_html.= '<tr><td colspan="4" align="center">'.
844: '<font size="+1">'.
845: &mt($pre_graph_text,
846: $plot_num,$foil_choice_data->{'_count'},
847: $correct,
848: $foil_choice_data->{'_count'}-$correct,
849: $foil_choice_data->{'_students'},
850: @extra_data).
851: '</td></tr>'.$/;
852: $analysis_html.=
853: '<tr>'.
854: '<td>'.$concept_plot.'</td>'.
855: '<td>'.$choice_plot.'</td>';
856: if ($stacked_plot ne '') {
857: $analysis_html .=
858: '<td>'.$stacked_plot.'</td>'.
859: '<td>'.&build_foil_key($foils,$count_by_foil).'</td>';
860: } else {
861: $analysis_html .= ('<td></td>'x2);
862: }
863: $analysis_html.='</tr>'.$/;
864: if (defined($post_graph_text)) {
865: $analysis_html.= '<tr><td colspan="4" align="center">'.
866: $post_graph_text.'</td></tr>'.$/;
867: }
868: } elsif ($no_data_text ne '') {
869: $analysis_html.='<tr><td colspan="4" align="center">'.
870: &mt($no_data_text,
871: $plot_num,$foil_choice_data->{'_count'},
872: $correct,
873: $foil_choice_data->{'_count'}-$correct,
874: @extra_data);
875: if (defined($post_graph_text)) {
876: $analysis_html.='<br />'.$post_graph_text;
877: }
878: $analysis_html.='</td></tr>'.$/;
879: }
880: } # end of loop for plots
881: $analysis_html.='</table>';
882: $r->print($analysis_html);
883: }
884:
885: sub ensure_start_end_times {
886: my ($start,$end,$first,$last,$plot_num) = @_;
887: if (! defined($start) || ! defined($end)) {
888: my $sec_in_day = 86400;
889: my ($sday,$smon,$syear) =
890: (localtime($last - $sec_in_day*($plot_num-1)))[3..5];
891: $start = &Time::Local::timelocal(0,0,0,$sday,$smon,$syear);
892: $end = $start + $sec_in_day;
893: if ($plot_num == $ENV{'form.NumPlots'}) {
894: $start = $first;
895: }
896: }
897: return ($start,$end);
898: }
899:
900: sub RR_concept_plot {
901: my ($concepts,$foil_data,$title) = @_;
902: #
903: my %correct_by_concept;
904: my %incorrect_by_concept;
905: my %true;
906: foreach my $concept (@$concepts) {
907: foreach my $foil (@{$concept->{'foils'}}) {
908: next if (! exists($foil_data->{$foil}));
909: foreach my $choice (keys(%{$foil_data->{$foil}})) {
910: if ($choice eq $foil) {
911: $correct_by_concept{$concept->{'name'}} +=
912: $foil_data->{$foil}->{$choice};
913: } else {
914: $incorrect_by_concept{$concept->{'name'}} +=
915: $foil_data->{$foil}->{$choice};
916:
917: }
918: }
919: }
920: }
921: #
922: # need arrays for incorrect and correct because we want to use different
923: # colors for them
924: my @correct;
925: #
926: my $total =0;
927: for (my $i=0;$i<scalar(@$concepts);$i++) {
928: my $concept = $concepts->[$i];
929: $correct[$i] = $correct_by_concept{$concept->{'name'}};
930: $total += $correct_by_concept{$concept->{'name'}}+
931: $incorrect_by_concept{$concept->{'name'}};
932: }
933: if ($total == 0) { return ''; };
934: for (my $i=0;$i<=$#correct;$i++) {
935: $correct[$i] = sprintf('%0f',$correct[$i]/$total*100);
936: }
937: my $xlabel = 'concept';
938: my $plot= &Apache::loncommon::DrawBarGraph($title,
939: $xlabel,
940: 'Percent Choosing',
941: 100,
942: ['#33ff00','#ff3300'],
943: undef,
944: \@correct);
945: return $plot;
946: }
947:
948: sub RR_create_percent_selected_plot {
949: my ($concepts,$foils,$foil_data,$title) = @_;
950: #
951: if ($foil_data->{'_count'} == 0) { return ''; };
952: my %correct_selections;
953: my %incorrect_selections;
954: foreach my $foil (@$foils) {
955: # foil_data has format $foil_data->{true_foil}->{selected foil}=count
956: next if (! exists($foil_data->{$foil}));
957: while (my ($f,$count)= each(%{$foil_data->{$foil}})) {
958: if ($f eq $foil) {
959: $correct_selections{$foil} += $count;
960: } else {
961: $incorrect_selections{$f} += $count;
962: }
963: }
964: }
965: #
966: # need arrays for incorrect and correct because we want to use different
967: # colors for them
968: my @correct;
969: my @incorrect;
970: #
971: my $total = $foil_data->{'_count'};
972: for (my $i=0;$i<scalar(@$foils);$i++) {
973: my $foil = $foils->[$i];
974: $correct[$i] = $correct_selections{$foil};
975: $incorrect[$i] = $incorrect_selections{$foil};
976: }
977: for (my $i=0;$i<=$#correct;$i++) {
978: $correct[$i] = sprintf('%2f',$correct[$i]/$total*100);
979: }
980: for (my $i=0;$i<=$#incorrect;$i++) {
981: $incorrect[$i] = sprintf('%2f',$incorrect[$i]/$total*100);
982: }
983: #
984: # Put a blank in the data sets between concepts, if there are concepts
985: my @labels;
986: if (defined($concepts) && scalar(@$concepts) > 1) {
987: my @new_correct;
988: my @new_incorrect;
989: my $foil_count = 0;
990: foreach my $concept (@$concepts) {
991: foreach (@{$concept->{'foils'}}) {
992: push(@new_correct, $correct[$foil_count]);
993: push(@new_incorrect,$incorrect[$foil_count]);
994: push(@labels,++$foil_count);
995: }
996: push(@new_correct,'');
997: push(@new_incorrect,'');
998: push(@labels,'');
999: }
1000: @correct = @new_correct;
1001: @incorrect = @new_incorrect;
1002: } else {
1003: @labels = (1 .. scalar(@correct));
1004: }
1005: #
1006: my $xlabel = 'foil chosen';
1007: my $plot= &Apache::loncommon::DrawBarGraph($title,
1008: $xlabel,
1009: 'Percent Choosing',
1010: 100,
1011: ['#33ff00','#ff3300'],
1012: \@labels,
1013: \@correct,
1014: \@incorrect);
1015: return $plot;
1016: }
1017:
1018: sub RR_create_stacked_selection_plot {
1019: my ($foils,$foil_data,$title,$true_foils)=@_;
1020: #
1021: my @dataset; # array of array refs - multicolor rows $datasets[row]->[col]
1022: my @labels;
1023: my $count;
1024: my %column; # maps foil name to column in @datasets
1025: for (my $i=0;$i<scalar(@$foils);$i++) {
1026: my $foil = $foils->[$i];
1027: if (defined($true_foils) && scalar(keys(%$true_foils)) > 0 ) {
1028: next if (! $true_foils->{$foil} );
1029: push(@labels,$i+1);
1030: } else {
1031: next if (! exists($foil_data->{$foil}));
1032: push(@labels,$i+1);
1033: }
1034: next if (! exists($foil_data->{$foils->[$i]}));
1035: $column{$foil}= $count++;
1036: for (my $j=0;$j<scalar(@$foils);$j++) {
1037: my $value = 0;
1038: if ($i != $j ) {
1039: $value += $foil_data->{$foil}->{$foils->[$j]};
1040: }
1041: $dataset[$j]->[$column{$foil}]=$value;
1042: }
1043: }
1044: #
1045: return '' if (! scalar(keys(%column)));
1046: #
1047: my $grand_total = 0;
1048: my %count_per_foil;
1049: while (my ($foil,$bar) = each (%column)) {
1050: my $bar_total = 0;
1051: for (my $j=0;$j<scalar(@dataset);$j++) {
1052: $bar_total += $dataset[$j]->[$bar];
1053: }
1054: next if ($bar_total == 0);
1055: for (my $j=0;$j<scalar(@dataset);$j++) {
1056: $dataset[$j]->[$bar] =
1057: sprintf('%2f',$dataset[$j]->[$bar]/$bar_total * 100);
1058: }
1059: $count_per_foil{$foil}=' ( '.$bar_total.' )';
1060: $grand_total += $bar_total;
1061: }
1062: if ($grand_total == 0) {
1063: return ('',undef);
1064: }
1065: my @empty_row = ();
1066: foreach (@{$dataset[0]}) {
1067: push(@empty_row,0);
1068: }
1069: #
1070: my $graph = &Apache::loncommon::DrawBarGraph
1071: ($title,'Correct Foil','foils chosen Incorrectly',
1072: 100,$plotcolors,\@labels,\@empty_row,@dataset);
1073: return ($graph,\%count_per_foil);
1074: }
1075:
1076:
1077: #########################################################
1078: #########################################################
1079: ##
1080: ## Misc routines
1081: ##
1082: #########################################################
1083: #########################################################
1084:
1085: # if $correct is a hash ref, it is assumed to be indexed by student names.
1086: # the values are assumed to be hash refs with a key of 'answer'.
1087: sub classify_response_data {
1088: my ($full_row_data,$correct,$function) = @_;
1089: my %submission_data;
1090: my %students;
1091: my $max=0;
1092: foreach my $row (@$full_row_data) {
1093: my %subm = &hashify_attempt($row);
1094: if (ref($correct) eq 'HASH') {
1095: $subm{'correct'} = $correct->{$subm{'student'}};
1096: } else {
1097: $subm{'correct'} = $correct;
1098: }
1099: $subm{'submission'} =~ s/=\d+\s*$//;
1100: if (&$function(\%subm)) {
1101: $students{$subm{'student'}}++;
1102: $submission_data{'_count'}++;
1103: if (&submission_is_correct($subm{'award'})) {
1104: $submission_data{'_correct'}++;
1105: }
1106:
1107: if($max<++$submission_data{$subm{'correct'}}->{$subm{'submission'}}) {
1108: $max=$submission_data{$subm{'correct'}}->{$subm{'submission'}};
1109: }
1110: }
1111: }
1112: $submission_data{'_max'} = $max;
1113: $submission_data{'_students'}=scalar(keys(%students));
1114: return \%submission_data;
1115: }
1116:
1117:
1118: #########################################################
1119: #########################################################
1120: ##
1121: ## Option Response Routines
1122: ##
1123: #########################################################
1124: #########################################################
1125: sub OptionResponseAnalysis {
1126: my ($r,$problem,$problem_data,$Students) = @_;
1127: my ($resource,$respid) = ($problem->{'resource'},
1128: $problem->{'respid'});
1129: # Note: part data is not needed.
1130: my $PerformanceData = &Apache::loncoursedata::get_response_data
1131: (\@Apache::lonstatistics::SelectedSections,
1132: $Apache::lonstatistics::enrollment_status,
1133: $resource->{'symb'},$respid);
1134: if (! defined($PerformanceData) ||
1135: ref($PerformanceData) ne 'ARRAY' ) {
1136: $r->print('<h2>'.
1137: &mt('There is no student data for this problem.').
1138: '</h2>');
1139: } else {
1140: $r->rflush();
1141: if (exists($ENV{'form.ExcelOutput'})) {
1142: my $result = &OR_excel_sheet($r,$resource,
1143: $PerformanceData,
1144: $problem_data);
1145: $r->print($result);
1146: $r->rflush();
1147: } else {
1148: if ($ENV{'form.AnalyzeOver'} eq 'tries') {
1149: my $analysis_html = &OR_tries_analysis($r,
1150: $PerformanceData,
1151: $problem_data);
1152: $r->print($analysis_html);
1153: $r->rflush();
1154: } elsif ($ENV{'form.AnalyzeOver'} eq 'time') {
1155: my $analysis_html = &OR_time_analysis($PerformanceData,
1156: $problem_data);
1157: $r->print($analysis_html);
1158: $r->rflush();
1159: } else {
1160: $r->print('<h2>'.
1161: &mt('The analysis you have selected is '.
1162: 'not supported at this time').
1163: '</h2>');
1164: }
1165: }
1166: }
1167: }
1168:
1169: #########################################################
1170: #
1171: # Option Response: tries Analysis
1172: #
1173: #########################################################
1174: sub OR_tries_analysis {
1175: my ($r,$PerformanceData,$ORdata) = @_;
1176: my $mintries = 1;
1177: my $maxtries = $ENV{'form.NumPlots'};
1178: my ($table,$Foils,$Concepts) = &build_foil_index($ORdata);
1179: if (! defined($Concepts)) {
1180: $Concepts = [];
1181: }
1182: my %response_data = &OR_analyze_by_tries($r,$PerformanceData,
1183: $mintries,$maxtries);
1184: my $analysis = '';
1185: #
1186: # Compute the data necessary to make the plots
1187: my @foil_plot;
1188: my @concept_data;
1189: for (my $j=0;$j<=scalar(@$Concepts);$j++) {
1190: my $concept = $Concepts->[$j];
1191: foreach my $foilid (@{$concept->{'foils'}}) {
1192: for (my $try=$mintries;$try<=$maxtries;$try++) {
1193: # concept analysis data
1194: $concept_data[$j]->[$try]->{'_correct'} +=
1195: $response_data{$foilid}->[$try]->{'_correct'};
1196: $concept_data[$j]->[$try]->{'_total'} +=
1197: $response_data{$foilid}->[$try]->{'_total'};
1198: #
1199: # foil analysis data
1200: if ($response_data{$foilid}->[$try]->{'_total'} == 0) {
1201: push(@{$foil_plot[$try]->{'_correct'}},0);
1202: } else {
1203: push(@{$foil_plot[$try]->{'_correct'}},
1204: 100*$response_data{$foilid}->[$try]->{'_correct'}/
1205: $response_data{$foilid}->[$try]->{'_total'});
1206: }
1207: foreach my $option (@{$ORdata->{'_Options'}}) {
1208: push(@{$foil_plot[$try]->{'_total'}},
1209: $response_data{$foilid}->[$try]->{'_total'});
1210: if ($response_data{$foilid}->[$try]->{'_total'} == 0) {
1211: push (@{$foil_plot[$try]->{$option}},0);
1212: } else {
1213: if ($response_data{$foilid}->[$try]->{'_total'} ==
1214: $response_data{$foilid}->[$try]->{'_correct'}) {
1215: push(@{$foil_plot[$try]->{$option}},0);
1216: } else {
1217: push (@{$foil_plot[$try]->{$option}},
1218: 100 *
1219: $response_data{$foilid}->[$try]->{$option} /
1220: ($response_data{$foilid}->[$try]->{'_total'}
1221: -
1222: $response_data{$foilid}->[$try]->{'_correct'}
1223: ));
1224: }
1225: }
1226: } # End of foreach my $option
1227: }
1228: } # End of foreach my $foilid
1229: } # End of concept loops
1230: #
1231: # Build a table for the plots
1232: my $analysis_html = "<br /><table>\n";
1233: my $optionkey = &build_option_index($ORdata);
1234: my $num_concepts = 1;
1235: if (defined($Concepts)) { $num_concepts = scalar(@$Concepts); }
1236: #
1237: for (my $try=$mintries;$try<=$maxtries;$try++) {
1238: if (! defined($response_data{'_total'}->[$try]) ||
1239: $response_data{'_total'}->[$try] == 0) {
1240: if ($try > 1) {
1241: $analysis_html.= '<tr><td align="center" colspan="4"><b>'.
1242: &mt('None of the selected students attempted the problem more than [_1] times.',$try-1).
1243: '</b></td></tr>';
1244: } else {
1245: $analysis_html.= '<tr><td colspan="4" align="center"><b>'.
1246: &mt('None of the selected students have attempted the problem').'</b></td></tr>';
1247: }
1248: last;
1249: }
1250: my $concept_graph='';
1251: if ($num_concepts > 1) {
1252: #
1253: # Create concept plot
1254: my @concept_plot_data;
1255: for (my $j=0;$j<=$#concept_data;$j++) {
1256: my $total = $concept_data[$j]->[$try]->{'_total'};
1257: if ($total == 0) {
1258: $concept_plot_data[$j] = 0;
1259: } else {
1260: $concept_plot_data[$j] = 100 *
1261: sprintf('%0.3f',
1262: $concept_data[$j]->[$try]->{'_correct'} /
1263: $total);
1264: }
1265: }
1266: #
1267: $concept_graph = &Apache::loncommon::DrawBarGraph
1268: ('Correct Concepts','Concept Number','Percent Correct',
1269: 100,$plotcolors,undef,\@concept_plot_data,{xskip=>1});
1270: }
1271: #
1272: # Create Foil Plots
1273: my $data_count = $response_data{'_total'}->[$try];
1274: my $correct = $response_data{'_correct'}->[$try];
1275: my @Datasets;
1276: foreach my $option ('_correct',@{$ORdata->{'_Options'}}) {
1277: next if (! exists($foil_plot[$try]->{$option}));
1278: push(@Datasets,$foil_plot[$try]->{$option});
1279: }
1280: #
1281: # Put a blank in the data set between concepts
1282: for (my $set =0;$set<=$#Datasets;$set++) {
1283: my @Data = @{$Datasets[$set]};
1284: my $idx = 0;
1285: foreach my $concept (@{$Concepts}) {
1286: foreach my $foilid (@{$concept->{'foils'}}) {
1287: $Datasets[$set]->[$idx++]=shift(@Data);
1288: }
1289: if ($concept->{'name'} ne $Concepts->[-1]->{'name'}) {
1290: $Datasets[$set]->[$idx++] = 0;
1291: }
1292: }
1293: }
1294: #
1295: # Set up the labels needed for the bar graph
1296: my @Labels;
1297: my $idx = 1;
1298: foreach my $concept (@{$Concepts}) {
1299: foreach my $foilid (@{$concept->{'foils'}}) {
1300: push(@Labels,$idx++);
1301: }
1302: push(@Labels,'');
1303: }
1304: #
1305: my $correct_graph = &Apache::loncommon::DrawBarGraph
1306: ('Correct Statements','Statement','% Answered Correct',
1307: 100,$plotcolors,\@Labels,$Datasets[0],{xskip=>1});
1308:
1309: #
1310: #
1311: next if (! defined($Datasets[0]));
1312: for (my $i=0; $i< scalar(@{$Datasets[0]});$i++) {
1313: $Datasets[0]->[$i]=0;
1314: }
1315: my $count = $response_data{'_total'}->[$try] -
1316: $response_data{'_correct'}->[$try];
1317: my $incorrect_graph = &Apache::loncommon::DrawBarGraph
1318: ('Incorrect Statements','Statement','% Chosen Incorrectly',
1319: 100,$plotcolors,\@Labels,@Datasets,{xskip=>1});
1320: $analysis_html.=
1321: '<tr><td colspan="4" align="center">'.
1322: '<font size="+1">'.
1323: &mt('Attempt [_1], [_2] submissions, [_3] correct, [_4] incorrect',
1324: $try,$data_count,$correct,$data_count-$correct).
1325: '</font>'.'</td></tr>'.$/.
1326: '<tr>'.
1327: '<td>'.$concept_graph.'</td>'.
1328: '<td>'.$correct_graph.'</td>'.
1329: '<td>'.$incorrect_graph.'</td>'.
1330: '<td>'.$optionkey.'<td>'.
1331: '</tr>'.$/;
1332: }
1333: $analysis_html .= "</table>\n";
1334: $table .= $analysis_html;
1335: return $table;
1336: }
1337:
1338: sub OR_analyze_by_tries {
1339: my ($r,$PerformanceData,$mintries,$maxtries) = @_;
1340: my %Trydata;
1341: $mintries = 1 if (! defined($mintries) || $mintries < 1);
1342: $maxtries = $mintries if (! defined($maxtries) || $maxtries < $mintries);
1343: my @students;
1344: foreach my $row (@$PerformanceData) {
1345: next if (! defined($row));
1346: my $tries = &get_tries_from_row($row);
1347: my %Row = &Process_OR_Row($row);
1348: next if (! %Row);
1349: my $student_id = $row->[&Apache::loncoursedata::RD_student_id()];
1350: $students[$tries]->{$student_id}++;
1351: while (my ($foilid,$href) = each(%Row)) {
1352: if (! ref($href)) {
1353: $Trydata{$foilid}->[$tries] += $href;
1354: next;
1355: }
1356: while (my ($option,$value) = each(%$href)) {
1357: $Trydata{$foilid}->[$tries]->{$option}+=$value;
1358: }
1359: }
1360: }
1361: for (my $try=$mintries;$try<=$maxtries;$try++) {
1362: $Trydata{'_studentcount'}->[$try] = scalar(keys(%{$students[$try]}));
1363: }
1364: return %Trydata;
1365: }
1366:
1367: #########################################################
1368: #
1369: # Option Response: Time Analysis
1370: #
1371: #########################################################
1372: sub OR_time_analysis {
1373: my ($performance_data,$ORdata) = @_;
1374: my ($table,$Foils,$Concepts) = &build_foil_index($ORdata);
1375: my $foilkey = &build_option_index($ORdata);
1376: my $num_concepts = 1;
1377: if (defined($Concepts)) { $num_concepts = scalar(@$Concepts); }
1378: #
1379: if ($num_concepts < 2) {
1380: $table = '<h3>'.
1381: &mt('Not enough data for concept analysis. '.
1382: 'Performing Foil Analysis').
1383: '</h3>'.$table;
1384: }
1385: #
1386: my $num_plots = $ENV{'form.NumPlots'};
1387: my $num_data = scalar(@$performance_data)-1;
1388: #
1389: my $current_index;
1390: $table .= "<table>\n";
1391: for (my $i=0;$i<$num_plots;$i++) {
1392: ##
1393: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
1394: ('startdate_'.$i);
1395: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
1396: ('enddate_'.$i);
1397: if (! defined($starttime) || ! defined($endtime)) {
1398: my $sec_in_day = 86400;
1399: my $last_sub_time = &get_time_from_row($performance_data->[-1]);
1400: my ($sday,$smon,$syear) =
1401: (localtime($last_sub_time - $sec_in_day*$i))[3..5];
1402: $starttime = &Time::Local::timelocal(0,0,0,$sday,$smon,$syear);
1403: $endtime = $starttime + $sec_in_day;
1404: if ($i == ($num_plots -1 )) {
1405: $starttime = &get_time_from_row($performance_data->[0]);
1406: }
1407: }
1408: $table .= '<tr><td colspan="4" align="center"><font size="+1">'.
1409: &mt('Data from [_1] to [_2]',
1410: &Apache::lonlocal::locallocaltime($starttime),
1411: &Apache::lonlocal::locallocaltime($endtime)).
1412: '</font></td></tr>'.$/;
1413: my $startdateform = &Apache::lonhtmlcommon::date_setter
1414: ('Statistics','startdate_'.$i,$starttime);
1415: my $enddateform = &Apache::lonhtmlcommon::date_setter
1416: ('Statistics','enddate_'.$i,$endtime);
1417: #
1418: my $begin_index;
1419: my $end_index;
1420: my $j;
1421: while (++$j < scalar(@$performance_data)) {
1422: last if (&get_time_from_row($performance_data->[$j])
1423: > $starttime);
1424: }
1425: $begin_index = $j;
1426: while ($j < scalar(@$performance_data)) {
1427: if (&get_time_from_row($performance_data->[$j]) > $endtime) {
1428: last;
1429: } else {
1430: $j++;
1431: }
1432: }
1433: $end_index = $j;
1434: ##
1435: my ($processed_time_data,$correct,$data_count,$student_count) =
1436: &OR_time_process_data($performance_data,$begin_index,$end_index);
1437: ##
1438: $table .= '<tr><td colspan="4" align="center"><font size="+1">'.
1439: &mt('[_1] submissions from [_2] students, [_3] correct, [_4] incorrect',
1440: $data_count,$student_count,$correct,$data_count-$correct).
1441: '</font></td></tr>'.$/;
1442: my $concept_correct_plot = '';
1443: if ($num_concepts > 1) {
1444: $concept_correct_plot =
1445: &OR_Concept_Time_Analysis($processed_time_data,
1446: $correct,$data_count,$student_count,
1447: $ORdata,$Concepts);
1448: }
1449: my ($foil_correct_plot,$foil_incorrect_plot) =
1450: &OR_Foil_Time_Analysis($processed_time_data,
1451: $correct,$data_count,$student_count,
1452: $ORdata,$Foils,$Concepts);
1453: $table .= '<tr>'.
1454: '<td>'.$concept_correct_plot.'</td>'.
1455: '<td>'.$foil_correct_plot.'</td>'.
1456: '<td>'.$foil_incorrect_plot.'</td>'.
1457: '<td align="left" valign="top">'.$foilkey.'</td></tr>'.$/;
1458: $table .= '<tr><td colspan="4" align="center">'.
1459: &mt('Start time: [_1]',$startdateform).'<br />'.
1460: &mt('End time: [_1]',$enddateform).'</td></tr>'.$/;
1461: $table.= '<tr><td colspan="4"> </td></tr>'.$/;
1462: }
1463: $table .= '</table>';
1464: #
1465: return $table;
1466: }
1467:
1468: sub OR_Foil_Time_Analysis {
1469: my ($processed_time_data,$correct,$data_count,$student_count,
1470: $ORdata,$Foils,$Concepts) = @_;
1471: if ($data_count <= 0) {
1472: return ('<h2>'.&mt('There is no data to plot').'</h2>','');
1473: }
1474: my $analysis_html;
1475: my @plotdata;
1476: my @labels;
1477: foreach my $concept (@{$Concepts}) {
1478: foreach my $foil (@{$concept->{'foils'}}) {
1479: push(@labels,scalar(@labels)+1);
1480: my $total = $processed_time_data->{$foil}->{'_total'};
1481: if ($total == 0) {
1482: push(@{$plotdata[0]},0);
1483: } else {
1484: push(@{$plotdata[0]},
1485: 100 * $processed_time_data->{$foil}->{'_correct'} / $total);
1486: }
1487: my $total_incorrect = $total - $processed_time_data->{$foil}->{'_correct'};
1488: for (my $i=0;$i<scalar(@{$ORdata->{'_Options'}});$i++) {
1489: my $option = $ORdata->{'_Options'}->[$i];
1490: if ($total_incorrect == 0) {
1491: push(@{$plotdata[$i+1]},0);
1492: } else {
1493: push(@{$plotdata[$i+1]},
1494: 100 * $processed_time_data->{$foil}->{$option} / $total_incorrect);
1495: }
1496: }
1497: }
1498: # Put in a blank one
1499: push(@labels,'');
1500: push(@{$plotdata[0]},0);
1501: for (my $i=0;$i<scalar(@{$ORdata->{'_Options'}});$i++) {
1502: push(@{$plotdata[$i+1]},0);
1503: }
1504: }
1505: #
1506: # Create the plot
1507: my $correct_plot = &Apache::loncommon::DrawBarGraph('Correct Statements',
1508: 'Statement Number',
1509: 'Percent Correct',
1510: 100,
1511: $plotcolors,
1512: undef,
1513: $plotdata[0],
1514: {xskip=>1});
1515: for (my $j=0; $j< scalar(@{$plotdata[0]});$j++) {
1516: $plotdata[0]->[$j]=0;
1517: }
1518: my $incorrect_plot =
1519: &Apache::loncommon::DrawBarGraph('Incorrect Statements',
1520: 'Statement Number',
1521: 'Incorrect Option Choice',
1522: 100,
1523: $plotcolors,
1524: undef,
1525: @plotdata,{xskip=>1});
1526: return ($correct_plot,$incorrect_plot);
1527: }
1528:
1529: sub OR_Concept_Time_Analysis {
1530: my ($processed_time_data,$correct,$data_count,$student_count,
1531: $ORdata,$Concepts) = @_;
1532: return '' if ($data_count == 0);
1533: #
1534: # Put the data in plottable form
1535: my @plotdata;
1536: foreach my $concept (@$Concepts) {
1537: my ($total,$correct);
1538: foreach my $foil (@{$concept->{'foils'}}) {
1539: $total += $processed_time_data->{$foil}->{'_total'};
1540: $correct += $processed_time_data->{$foil}->{'_correct'};
1541: }
1542: if ($total == 0) {
1543: push(@plotdata,0);
1544: } else {
1545: push(@plotdata,100 * $correct / $total);
1546: }
1547: }
1548: #
1549: # Create the plot
1550: return &Apache::loncommon::DrawBarGraph('Correct Concepts',
1551: 'Concept Number',
1552: 'Percent Correct',
1553: 100,
1554: $plotcolors,
1555: undef,
1556: \@plotdata,{xskip=>1});
1557: }
1558:
1559: sub OR_time_process_data {
1560: my ($performance_data,$begin_index,$end_index)=@_;
1561: my %processed_time_data;
1562: my %distinct_students;
1563: my ($correct,$data_count);
1564: if (($begin_index == $end_index) &&
1565: ($end_index != scalar(@$performance_data)-1)) {
1566: return undef;
1567: }
1568: # Be sure we include the last one if we are asked for it.
1569: # That we have to correct here (and not when $end_index is
1570: # given a value) should probably be considered a bug.
1571: if ($end_index == scalar(@$performance_data)-1) {
1572: $end_index++;
1573: }
1574: my $count;
1575: for (my $i=$begin_index;$i<$end_index;$i++) {
1576: my $attempt = $performance_data->[$i];
1577: $count++;
1578: next if (! defined($attempt));
1579: my %attempt = &Process_OR_Row($attempt);
1580: $data_count++;
1581: $correct += $attempt{'_correct'};
1582: $distinct_students{$attempt->[&Apache::loncoursedata::RD_student_id()]}++;
1583: while (my ($foilid,$href) = each(%attempt)) {
1584: if (! ref($href)) {
1585: $processed_time_data{$foilid} += $href;
1586: next;
1587: }
1588: while (my ($option,$value) = each(%$href)) {
1589: $processed_time_data{$foilid}->{$option}+=$value;
1590: }
1591: }
1592: }
1593: return (\%processed_time_data,$correct,$data_count,
1594: scalar(keys(%distinct_students)));
1595: }
1596:
1597: #########################################################
1598: #########################################################
1599: ##
1600: ## Excel output
1601: ##
1602: #########################################################
1603: #########################################################
1604: sub build_student_data_worksheet {
1605: my ($workbook,$format) = @_;
1606: my $rows_output = 3;
1607: my $cols_output = 0;
1608: my $worksheet = $workbook->addworksheet('Student Data');
1609: $worksheet->write($rows_output++,0,'Student Data',$format->{'h3'});
1610: my @Headers = ('full name','username','domain','section',
1611: "student\nnumber",'identifier');
1612: $worksheet->write_row($rows_output++,0,\@Headers,$format->{'header'});
1613: my @Students = @Apache::lonstatistics::Students;
1614: my $studentrows = &Apache::loncoursedata::get_student_data(\@Students);
1615: my %ids;
1616: foreach my $row (@$studentrows) {
1617: my ($mysqlid,$student) = @$row;
1618: $ids{$student}=$mysqlid;
1619: }
1620: foreach my $student (@Students) {
1621: my $name_domain = $student->{'username'}.':'.$student->{'domain'};
1622: $worksheet->write_row($rows_output++,0,
1623: [$student->{'fullname'},
1624: $student->{'username'},$student->{'domain'},
1625: $student->{'section'},$student->{'id'},
1626: $ids{$name_domain}]);
1627: }
1628: return $worksheet;
1629: }
1630:
1631: sub OR_excel_sheet {
1632: my ($r,$resource,$performance_data,$ORdata) = @_;
1633: my $response = '';
1634: my (undef,$Foils,$Concepts) = &build_foil_index($ORdata);
1635: #
1636: # Create excel worksheet
1637: my $filename = '/prtspool/'.
1638: $ENV{'user.name'}.'_'.$ENV{'user.domain'}.'_'.
1639: time.'_'.rand(1000000000).'.xls';
1640: my $workbook = Spreadsheet::WriteExcel->new('/home/httpd'.$filename);
1641: if (! defined($workbook)) {
1642: $r->log_error("Error creating excel spreadsheet $filename: $!");
1643: $r->print('<p>'.&mt("Unable to create new Excel file. ".
1644: "This error has been logged. ".
1645: "Please alert your LON-CAPA administrator").
1646: '</p>');
1647: return undef;
1648: }
1649: #
1650: $workbook->set_tempdir('/home/httpd/perl/tmp');
1651: my $format = &Apache::loncommon::define_excel_formats($workbook);
1652: #
1653: # Create and populate main worksheets
1654: my $problem_data_sheet = $workbook->addworksheet('Problem Data');
1655: my $student_data_sheet = &build_student_data_worksheet($workbook,$format);
1656: my $response_data_sheet = $workbook->addworksheet('Response Data');
1657: foreach my $sheet ($problem_data_sheet,$student_data_sheet,
1658: $response_data_sheet) {
1659: $sheet->write(0,0,$resource->{'title'},$format->{'h2'});
1660: $sheet->write(1,0,$resource->{'src'},$format->{'h3'});
1661: }
1662: #
1663: my $result;
1664: $result = &OR_build_problem_data_worksheet($problem_data_sheet,$format,
1665: $Concepts,$ORdata);
1666: if ($result ne 'okay') {
1667: # Do something useful
1668: }
1669: $result = &OR_build_response_data_worksheet($response_data_sheet,$format,
1670: $performance_data,$Foils,
1671: $ORdata);
1672: if ($result ne 'okay') {
1673: # Do something useful
1674: }
1675: $response_data_sheet->activate();
1676: #
1677: # Close the excel file
1678: $workbook->close();
1679: #
1680: # Write a link to allow them to download it
1681: $result .= '<h2>'.&mt('Excel Raw Data Output').'</h2>'.
1682: '<p><a href="'.$filename.'">'.
1683: &mt('Your Excel spreadsheet.').
1684: '</a></p>'."\n";
1685: return $result;
1686: }
1687:
1688: sub OR_build_problem_data_worksheet {
1689: my ($worksheet,$format,$Concepts,$ORdata) = @_;
1690: my $rows_output = 3;
1691: my $cols_output = 0;
1692: $worksheet->write($rows_output++,0,'Problem Structure',$format->{'h3'});
1693: ##
1694: ##
1695: my @Headers;
1696: if (@$Concepts > 1) {
1697: @Headers = ("Concept\nNumber",'Concept',"Foil\nNumber",
1698: 'Foil Name','Foil Text','Correct value');
1699: } else {
1700: @Headers = ('Foil Number','FoilName','Foil Text','Correct value');
1701: }
1702: $worksheet->write_row($rows_output++,0,\@Headers,$format->{'header'});
1703: my %Foildata = %{$ORdata->{'_Foils'}};
1704: my $conceptindex = 1;
1705: my $foilindex = 1;
1706: foreach my $concept (@$Concepts) {
1707: my @FoilsInConcept = @{$concept->{'foils'}};
1708: my $firstfoil = shift(@FoilsInConcept);
1709: if (@$Concepts > 1) {
1710: $worksheet->write_row($rows_output++,0,
1711: [$conceptindex,
1712: $concept->{'name'},
1713: $foilindex++,
1714: $Foildata{$firstfoil}->{'name'},
1715: $Foildata{$firstfoil}->{'text'},
1716: $Foildata{$firstfoil}->{'value'},]);
1717: } else {
1718: $worksheet->write_row($rows_output++,0,
1719: [ $foilindex++,
1720: $Foildata{$firstfoil}->{'name'},
1721: $Foildata{$firstfoil}->{'text'},
1722: $Foildata{$firstfoil}->{'value'},]);
1723: }
1724: foreach my $foilid (@FoilsInConcept) {
1725: if (@$Concepts > 1) {
1726: $worksheet->write_row($rows_output++,0,
1727: ['',
1728: '',
1729: $foilindex,
1730: $Foildata{$foilid}->{'name'},
1731: $Foildata{$foilid}->{'text'},
1732: $Foildata{$foilid}->{'value'},]);
1733: } else {
1734: $worksheet->write_row($rows_output++,0,
1735: [$foilindex,
1736: $Foildata{$foilid}->{'name'},
1737: $Foildata{$foilid}->{'text'},
1738: $Foildata{$foilid}->{'value'},]);
1739: }
1740: } continue {
1741: $foilindex++;
1742: }
1743: } continue {
1744: $conceptindex++;
1745: }
1746: $rows_output++;
1747: $rows_output++;
1748: ##
1749: ## Option data output
1750: $worksheet->write($rows_output++,0,'Options',$format->{'header'});
1751: foreach my $string (@{$ORdata->{'_Options'}}) {
1752: $worksheet->write($rows_output++,0,$string);
1753: }
1754: return 'okay';
1755: }
1756:
1757: sub OR_build_response_data_worksheet {
1758: my ($worksheet,$format,$performance_data,$Foils,$ORdata)=@_;
1759: my $rows_output = 3;
1760: my $cols_output = 0;
1761: $worksheet->write($rows_output++,0,'Response Data',$format->{'h3'});
1762: $worksheet->set_column(1,1,20);
1763: $worksheet->set_column(2,2,13);
1764: my @Headers = ('identifier','time','award detail','attempt');
1765: foreach my $foil (@$Foils) {
1766: push (@Headers,$foil.' submission');
1767: push (@Headers,$foil.' grading');
1768: }
1769: $worksheet->write_row($rows_output++,0,\@Headers,$format->{'header'});
1770: #
1771: foreach my $row (@$performance_data) {
1772: next if (! defined($row));
1773: my ($student,$award,$grading,$submission,$time,$tries) = @$row;
1774: my @Foilgrades = split('&',$grading);
1775: my @Foilsubs = split('&',$submission);
1776: my %response_data;
1777: for (my $j=0;$j<=$#Foilgrades;$j++) {
1778: my ($foilid,$correct) = split('=',$Foilgrades[$j]);
1779: my (undef,$submission) = split('=',$Foilsubs[$j]);
1780: $submission = &Apache::lonnet::unescape($submission);
1781: $response_data{$foilid.' submission'}=$submission;
1782: $response_data{$foilid.' award'}=$correct;
1783: }
1784: $worksheet->write($rows_output,$cols_output++,$student);
1785: $worksheet->write($rows_output,$cols_output++,
1786: &Apache::lonstathelpers::calc_serial($time),$format->{'date'});
1787: $worksheet->write($rows_output,$cols_output++,$award);
1788: $worksheet->write($rows_output,$cols_output++,$tries);
1789: foreach my $foilid (@$Foils) {
1790: $worksheet->write($rows_output,$cols_output++,
1791: $response_data{$foilid.' submission'});
1792: $worksheet->write($rows_output,$cols_output++,
1793: $response_data{$foilid.' award'});
1794: }
1795: $rows_output++;
1796: $cols_output = 0;
1797: }
1798: return;
1799: }
1800:
1801: sub build_foil_index {
1802: my ($ORdata) = @_;
1803: return if (! exists($ORdata->{'_Foils'}));
1804: my %Foildata = %{$ORdata->{'_Foils'}};
1805: my @Foils = sort(keys(%Foildata));
1806: my %Concepts;
1807: foreach my $foilid (@Foils) {
1808: push(@{$Concepts{$Foildata{$foilid}->{'_Concept'}}},
1809: $foilid);
1810: }
1811: undef(@Foils);
1812: # Having gathered the concept information in a hash, we now translate it
1813: # into an array because we need to be consistent about order.
1814: # Also put the foils in order, too.
1815: my $sortfunction = sub {
1816: my %Numbers = (one => 1,
1817: two => 2,
1818: three => 3,
1819: four => 4,
1820: five => 5,
1821: six => 6,
1822: seven => 7,
1823: eight => 8,
1824: nine => 9,
1825: ten => 10,);
1826: my $a1 = lc($a);
1827: my $b1 = lc($b);
1828: if (exists($Numbers{$a1})) {
1829: $a1 = $Numbers{$a1};
1830: }
1831: if (exists($Numbers{$b1})) {
1832: $b1 = $Numbers{$b1};
1833: }
1834: if (($a1 =~/^\d+$/) && ($b1 =~/^\d+$/)) {
1835: return $a1 <=> $b1;
1836: } else {
1837: return $a1 cmp $b1;
1838: }
1839: };
1840: my @Concepts;
1841: foreach my $concept (sort $sortfunction (keys(%Concepts))) {
1842: if (! defined($Concepts{$concept})) {
1843: $Concepts{$concept}=[];
1844: # next;
1845: }
1846: push(@Concepts,{ name => $concept,
1847: foils => [@{$Concepts{$concept}}]});
1848: push(@Foils,(@{$Concepts{$concept}}));
1849: }
1850: #
1851: # Build up the table of row labels.
1852: my $table = '<table border="1" >'."\n";
1853: if (@Concepts > 1) {
1854: $table .= '<tr>'.
1855: '<th>'.&mt('Concept Number').'</th>'.
1856: '<th>'.&mt('Concept').'</th>'.
1857: '<th>'.&mt('Foil Number').'</th>'.
1858: '<th>'.&mt('Foil Name').'</th>'.
1859: '<th>'.&mt('Foil Text').'</th>'.
1860: '<th>'.&mt('Correct Value').'</th>'.
1861: "</tr>\n";
1862: } else {
1863: $table .= '<tr>'.
1864: '<th>'.&mt('Foil Number').'</th>'.
1865: '<th>'.&mt('Foil Name').'</th>'.
1866: '<th>'.&mt('Foil Text').'</th>'.
1867: '<th>'.&mt('Correct Value').'</th>'.
1868: "</tr>\n";
1869: }
1870: my $conceptindex = 1;
1871: my $foilindex = 1;
1872: foreach my $concept (@Concepts) {
1873: my @FoilsInConcept = @{$concept->{'foils'}};
1874: my $firstfoil = shift(@FoilsInConcept);
1875: if (@Concepts > 1) {
1876: $table .= '<tr>'.
1877: '<td>'.$conceptindex.'</td>'.
1878: '<td>'.&HTML::Entities::encode($concept->{'name'},'<>&"').'</td>'.
1879: '<td>'.$foilindex++.'</td>'.
1880: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'name'},'<>&"').'</td>'.
1881: '<td>'.$Foildata{$firstfoil}->{'text'}.'</td>'.
1882: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'value'},'<>&"').'</td>'.
1883: "</tr>\n";
1884: } else {
1885: $table .= '<tr>'.
1886: '<td>'.$foilindex++.'</td>'.
1887: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'name'},'<>&"').'</td>'.
1888: '<td>'.$Foildata{$firstfoil}->{'text'}.'</td>'.
1889: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'value'},'<>&"').'</td>'.
1890: "</tr>\n";
1891: }
1892: foreach my $foilid (@FoilsInConcept) {
1893: if (@Concepts > 1) {
1894: $table .= '<tr>'.
1895: '<td></td>'.
1896: '<td></td>'.
1897: '<td>'.$foilindex.'</td>'.
1898: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'name'},'<>&"').'</td>'.
1899: '<td>'.$Foildata{$foilid}->{'text'}.'</td>'.
1900: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'value'},'<>&"').'</td>'.
1901: "</tr>\n";
1902: } else {
1903: $table .= '<tr>'.
1904: '<td>'.$foilindex.'</td>'.
1905: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'name'},'<>&"').'</td>'.
1906: '<td>'.$Foildata{$foilid}->{'text'}.'</td>'.
1907: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'value'},'<>&"').'</td>'.
1908: "</tr>\n";
1909: }
1910: } continue {
1911: $foilindex++;
1912: }
1913: } continue {
1914: $conceptindex++;
1915: }
1916: $table .= "</table>\n";
1917: #
1918: # Build option index with color stuff
1919: return ($table,\@Foils,\@Concepts);
1920: }
1921:
1922: sub build_option_index {
1923: my ($ORdata)= @_;
1924: my $table = "<table>\n";
1925: my $optionindex = 0;
1926: my @Rows;
1927: foreach my $option (&mt('correct option chosen'),@{$ORdata->{'_Options'}}) {
1928: my $color = $plotcolors->[$optionindex++];
1929: push (@Rows,
1930: '<tr>'.
1931: '<td bgcolor="'.$color.'">'.
1932: '<font color="'.$color.'">'.('*'x3).'</font>'.'</td>'.
1933: '<td>'.&HTML::Entities::encode($option,'<>&"').'</td>'.
1934: "</tr>\n");
1935: }
1936: shift(@Rows); # Throw away 'correct option chosen' color
1937: $table .= join('',reverse(@Rows));
1938: $table .= "</table>\n";
1939: }
1940:
1941: sub build_foil_key {
1942: my ($foils,$extra_data)= @_;
1943: if (! defined($extra_data)) { $extra_data = {}; }
1944: my $table = "<table>\n";
1945: my $foil_index = 0;
1946: my @rows;
1947: foreach my $foil (&mt('correct foil chosen'),@{$foils}) {
1948: my $color = $plotcolors->[$foil_index++];
1949: push (@rows,
1950: '<tr>'.
1951: '<td bgcolor="'.$color.'" class="key">'.
1952: '<font color="'.$color.'">'.('*'x4).'</font></td>'.
1953: '<td>'.&HTML::Entities::encode($foil,'<>&"').
1954: (' 'x2).$extra_data->{$foil}.'</td>'.
1955: "</tr>\n");
1956: }
1957: shift(@rows); # Throw away 'correct foil chosen' color
1958: $table .= join('',reverse(@rows));
1959: $table .= "</table>\n";
1960: }
1961:
1962: #########################################################
1963: #########################################################
1964: ##
1965: ## Generic Interface Routines
1966: ##
1967: #########################################################
1968: #########################################################
1969: sub CreateInterface {
1970: ##
1971: ## Environment variable initialization
1972: if (! exists$ENV{'form.AnalyzeOver'}) {
1973: $ENV{'form.AnalyzeOver'} = 'tries';
1974: }
1975: ##
1976: ## Build the menu
1977: my $Str = '';
1978: $Str .= &Apache::lonhtmlcommon::breadcrumbs
1979: (undef,'Detailed Problem Analysis');
1980: $Str .= '<table cellspacing="5">'."\n";
1981: $Str .= '<tr>';
1982: $Str .= '<td align="center"><b>'.&mt('Sections').'</b></td>';
1983: $Str .= '<td align="center"><b>'.&mt('Enrollment Status').'</b></td>';
1984: # $Str .= '<td align="center"><b>'.&mt('Sequences and Folders').'</b></td>';
1985: $Str .= '<td align="center"> </td>';
1986: $Str .= '</tr>'."\n";
1987: ##
1988: ##
1989: $Str .= '<tr><td align="center">'."\n";
1990: $Str .= &Apache::lonstatistics::SectionSelect('Section','multiple',5);
1991: $Str .= '</td>';
1992: #
1993: $Str .= '<td align="center">';
1994: $Str .= &Apache::lonhtmlcommon::StatusOptions(undef,undef,5);
1995: $Str .= '</td>';
1996: #
1997: # $Str .= '<td align="center">';
1998: my $only_seq_with_assessments = sub {
1999: my $s=shift;
2000: if ($s->{'num_assess'} < 1) {
2001: return 0;
2002: } else {
2003: return 1;
2004: }
2005: };
2006: &Apache::lonstatistics::MapSelect('Maps','multiple,all',5,
2007: $only_seq_with_assessments);
2008: ##
2009: ##
2010: $Str .= '<td>';
2011: ##
2012: my $showprob_checkbox =
2013: '<input type="checkbox" name="show_prob" value="true" ';
2014: if ($ENV{'form.show_prob'} eq 'true') {
2015: $showprob_checkbox .= 'checked ';
2016: }
2017: $showprob_checkbox.= ' />';
2018: $Str.= '<nobr><label>'.
2019: &mt('Show problem [_1]',$showprob_checkbox).
2020: '</label></nobr><br />';
2021: ##
2022: my $analyze_selector = '<select name="AnalyzeOver" >';
2023: $analyze_selector .= '<option value="tries" ';
2024: if (! exists($ENV{'form.AnalyzeOver'}) ||
2025: $ENV{'form.AnalyzeOver'} eq 'tries'){
2026: # Default to tries
2027: $analyze_selector .= ' selected ';
2028: }
2029: $analyze_selector .= '>'.&mt('Tries').'</option>';
2030: $analyze_selector .= '<option value="time" ';
2031: $analyze_selector .= ' selected ' if ($ENV{'form.AnalyzeOver'} eq 'time');
2032: $analyze_selector .= '>'.&mt('Time').'</option>';
2033: $analyze_selector .= '</select>';
2034: $Str .= '<nobr><label>'.
2035: &mt('Analyze Over [_1] [_2]',
2036: $analyze_selector,
2037: &Apache::loncommon::help_open_topic('Analysis_Analyze_Over')).
2038: '</label></nobr><br />'.$/;
2039: ##
2040: my $numplots_selector = '<select name="NumPlots">';
2041: if (! exists($ENV{'form.NumPlots'})
2042: || $ENV{'form.NumPlots'} < 1
2043: || $ENV{'form.NumPlots'} > 20) {
2044: $ENV{'form.NumPlots'} = 5;
2045: }
2046: foreach my $i (1,2,3,4,5,6,7,8,10,15,20) {
2047: $numplots_selector .= '<option value="'.$i.'" ';
2048: if ($ENV{'form.NumPlots'} == $i) { $numplots_selector.=' selected '; }
2049: $numplots_selector .= '>'.$i.'</option>';
2050: }
2051: $numplots_selector .= '</select></nobr><br />';
2052: $Str .= '<nobr><label>'.&mt('Number of Plots [_1]',$numplots_selector).
2053: '</label></nobr>';
2054: ##
2055: $Str .= '<nobr><label>'.&mt('Status: [_1]',
2056: '<input type="text" '.
2057: 'name="stats_status" size="60" value="" />'
2058: ).
2059: '</label></nobr>';
2060: $Str .= '</td>';
2061: ##
2062: ##
2063: $Str .= '</tr>'."\n";
2064: $Str .= '</table>'."\n";
2065: return $Str;
2066: }
2067:
2068: #########################################################
2069: #########################################################
2070: ##
2071: ## Misc Option Response functions
2072: ##
2073: #########################################################
2074: #########################################################
2075: sub get_time_from_row {
2076: my ($row) = @_;
2077: if (ref($row)) {
2078: return $row->[&Apache::loncoursedata::RD_timestamp()];
2079: }
2080: return undef;
2081: }
2082:
2083: sub get_tries_from_row {
2084: my ($row) = @_;
2085: if (ref($row)) {
2086: return $row->[&Apache::loncoursedata::RD_tries()];
2087: }
2088: return undef;
2089: }
2090:
2091: sub hashify_attempt {
2092: my ($row) = @_;
2093: my %attempt;
2094: $attempt{'student'} = $row->[&Apache::loncoursedata::RD_sname()];
2095: $attempt{'tries'} = $row->[&Apache::loncoursedata::RD_tries()];
2096: $attempt{'submission'} = &Apache::lonnet::unescape($row->[&Apache::loncoursedata::RD_submission()]);
2097: $attempt{'award'} = $row->[&Apache::loncoursedata::RD_awarddetail()];
2098: $attempt{'timestamp'} = $row->[&Apache::loncoursedata::RD_timestamp()];
2099: return %attempt;
2100: }
2101:
2102: sub Process_OR_Row {
2103: my ($row) = @_;
2104: my %RowData;
2105: # my $student_id = $row->[&Apache::loncoursedata::RD_student_id()];
2106: my $award = $row->[&Apache::loncoursedata::RD_awarddetail()];
2107: my $grading = $row->[&Apache::loncoursedata::RD_response_eval()];
2108: my $submission = $row->[&Apache::loncoursedata::RD_submission()];
2109: my $time = $row->[&Apache::loncoursedata::RD_timestamp()];
2110: # my $tries = $row->[&Apache::loncoursedata::RD_tries()];
2111: return undef if ($award eq 'MISSING_ANSWER');
2112: if (&submission_is_correct($award)) {
2113: $RowData{'_correct'} = 1;
2114: }
2115: $RowData{'_total'} = 1;
2116: my @Foilgrades = split('&',$grading);
2117: my @Foilsubs = split('&',$submission);
2118: for (my $j=0;$j<=$#Foilgrades;$j++) {
2119: my ($foilid,$correct) = split('=',$Foilgrades[$j]);
2120: $foilid = &Apache::lonnet::unescape($foilid);
2121: my (undef,$submission) = split('=',$Foilsubs[$j]);
2122: if ($correct) {
2123: $RowData{$foilid}->{'_correct'}++;
2124: } else {
2125: $submission = &Apache::lonnet::unescape($submission);
2126: $RowData{$foilid}->{$submission}++;
2127: }
2128: $RowData{$foilid}->{'_total'}++;
2129: }
2130: return %RowData;
2131: }
2132:
2133: sub submission_is_correct {
2134: my ($award) = @_;
2135: if ($award =~ /(APPROX_ANS|EXACT_ANS)/) {
2136: return 1;
2137: } else {
2138: return 0;
2139: }
2140: }
2141:
2142: 1;
2143:
2144: __END__
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