Annotation of loncom/interface/statistics/lonproblemanalysis.pm, revision 1.109
1.1 stredwic 1: # The LearningOnline Network with CAPA
2: #
1.109 ! matthew 3: # $Id: lonproblemanalysis.pm,v 1.108 2004/12/06 16:22:21 matthew Exp $
1.1 stredwic 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: #
1.11 minaeibi 27: package Apache::lonproblemanalysis;
1.1 stredwic 28:
29: use strict;
30: use Apache::lonnet();
1.25 matthew 31: use Apache::loncommon();
1.7 stredwic 32: use Apache::lonhtmlcommon();
1.23 matthew 33: use Apache::loncoursedata();
34: use Apache::lonstatistics;
35: use Apache::lonlocal;
1.71 matthew 36: use Apache::lonstathelpers();
37: use Apache::lonstudentsubmissions();
1.37 matthew 38: use HTML::Entities();
1.42 matthew 39: use Time::Local();
1.43 matthew 40: use Spreadsheet::WriteExcel();
1.106 matthew 41: use capa;
1.2 stredwic 42:
1.40 matthew 43: my $plotcolors = ['#33ff00',
44: '#0033cc', '#990000', '#aaaa66', '#663399', '#ff9933',
45: '#66ccff', '#ff9999', '#cccc33', '#660000', '#33cc66',
46: ];
1.39 matthew 47:
1.54 matthew 48: my @SubmitButtons = ({ name => 'PrevProblemAnalysis',
49: text => 'Previous Problem' },
50: { name => 'ProblemAnalysis',
1.46 matthew 51: text => 'Analyze Problem Again' },
1.54 matthew 52: { name => 'NextProblemAnalysis',
53: text => 'Next Problem' },
54: { name => 'break'},
1.46 matthew 55: { name => 'SelectAnother',
1.53 matthew 56: text => 'Choose a different Problem' },
1.46 matthew 57: { name => 'ExcelOutput',
58: text => 'Produce Excel Output' });
59:
1.1 stredwic 60: sub BuildProblemAnalysisPage {
1.23 matthew 61: my ($r,$c)=@_;
1.49 matthew 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();
1.48 matthew 74: #
1.25 matthew 75: $r->print(&CreateInterface());
1.28 matthew 76: #
77: my @Students = @Apache::lonstatistics::Students;
78: #
1.86 matthew 79: if (@Students < 1 && exists($ENV{'form.firstrun'})) {
1.46 matthew 80: $r->print('<h2>There are no students in the sections selected</h2>');
81: }
82: #
1.85 matthew 83: my @CacheButtonHTML =
84: &Apache::lonstathelpers::manage_caches($r,'Statistics','stats_status');
1.39 matthew 85: $r->rflush();
1.46 matthew 86: #
1.87 matthew 87: # Support for numerical and radio response isn't complete enough to
88: # include in 1.2 release.
1.107 matthew 89: my $problem_types = '(option|radiobutton|numerical)';
90: # my $problem_types = '.';#(option)';
1.33 matthew 91: if (exists($ENV{'form.problemchoice'}) &&
92: ! exists($ENV{'form.SelectAnother'})) {
1.46 matthew 93: foreach my $button (@SubmitButtons) {
1.54 matthew 94: if ($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: }
1.46 matthew 101: }
1.85 matthew 102: foreach my $html (@CacheButtonHTML) {
103: $r->print($html.(' 'x5));
104: }
1.31 matthew 105: #
1.25 matthew 106: $r->print('<hr />');
1.54 matthew 107: $r->rflush();
108: #
109: # Determine which problem we are to analyze
1.61 matthew 110: my $current_problem = &Apache::lonstathelpers::get_target_from_id
111: ($ENV{'form.problemchoice'});
1.54 matthew 112: #
1.61 matthew 113: my ($prev,$curr,$next) =
114: &Apache::lonstathelpers::get_prev_curr_next($current_problem,
1.66 matthew 115: $problem_types,
116: 'response',
1.61 matthew 117: );
1.54 matthew 118: if (exists($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: }
1.23 matthew 125: #
1.54 matthew 126: # Store the current problem choice and send it out in the form
1.61 matthew 127: $ENV{'form.problemchoice'} =
128: &Apache::lonstathelpers::make_target_id($current_problem);
1.54 matthew 129: $r->print('<input type="hidden" name="problemchoice" value="'.
130: $ENV{'form.problemchoice'}.'" />');
1.28 matthew 131: #
1.54 matthew 132: if (! defined($current_problem->{'resource'})) {
1.46 matthew 133: $r->print('resource is undefined');
134: } else {
1.54 matthew 135: my $resource = $current_problem->{'resource'};
1.44 matthew 136: $r->print('<h1>'.$resource->{'title'}.'</h1>');
1.41 matthew 137: $r->print('<h3>'.$resource->{'src'}.'</h3>');
1.91 matthew 138: if ($ENV{'form.show_prob'} eq 'true') {
139: $r->print(&Apache::lonstathelpers::render_resource($resource));
140: }
1.44 matthew 141: $r->rflush();
1.71 matthew 142: my %Data = &Apache::lonstathelpers::get_problem_data
143: ($resource->{'src'});
1.88 matthew 144: my $problem_data = $Data{$current_problem->{'part'}.
1.54 matthew 145: '.'.
146: $current_problem->{'respid'}};
147: if ($current_problem->{'resptype'} eq 'option') {
1.56 matthew 148: &OptionResponseAnalysis($r,$current_problem,
1.88 matthew 149: $problem_data,
1.47 matthew 150: \@Students);
1.54 matthew 151: } elsif ($current_problem->{'resptype'} eq 'radiobutton') {
1.97 matthew 152: &radio_response_analysis($r,$current_problem,
153: $problem_data,
154: \@Students);
1.66 matthew 155: } elsif ($current_problem->{'resptype'} eq 'numerical') {
1.103 matthew 156: &numerical_response_analysis($r,$current_problem,
157: $problem_data,\@Students);
1.47 matthew 158: } else {
1.102 matthew 159: $r->print('<h2>Analysis of '.$current_problem->{'resptype'}.' is not supported</h2>');
1.47 matthew 160: }
1.7 stredwic 161: }
1.23 matthew 162: $r->print('<hr />');
1.25 matthew 163: } else {
1.31 matthew 164: $r->print('<input type="submit" name="ProblemAnalysis" value="'.
165: &mt('Analyze Problem').'" />');
166: $r->print(' 'x5);
1.27 matthew 167: $r->print('<h3>'.&mt('Please select a problem to analyze').'</h3>');
1.61 matthew 168: $r->print(&Apache::lonstathelpers::ProblemSelector
1.66 matthew 169: ($problem_types));
1.1 stredwic 170: }
171: }
172:
1.69 matthew 173: #########################################################
174: #########################################################
175: ##
1.66 matthew 176: ## Numerical Response Routines
177: ##
178: #########################################################
179: #########################################################
1.103 matthew 180: sub numerical_response_analysis {
181: my ($r,$problem,$problem_analysis,$students) = @_;
1.79 matthew 182: my $c = $r->connection();
1.103 matthew 183: #
184: if ($ENV{'form.AnalyzeOver'} !~ /^(tries|time)$/) {
185: $r->print('Bad request');
186: }
187: #
1.82 matthew 188: my ($resource,$partid,$respid) = ($problem->{'resource'},
189: $problem->{'part'},
190: $problem->{'respid'});
1.103 matthew 191: # Gather student data
192: my $response_data = &Apache::loncoursedata::get_response_data
1.82 matthew 193: (\@Apache::lonstatistics::SelectedSections,
194: $Apache::lonstatistics::enrollment_status,
195: $resource->{'symb'},$respid);
1.103 matthew 196: #
1.104 matthew 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,$answers));
204: }
1.106 matthew 205: #
206: if (ref($response_data) ne 'ARRAY') {
207: $r->print('<h2>'.
208: &mt('There is no submission data for this resource').
209: '</h2>');
210: return;
211: }
1.104 matthew 212: my $analysis_html = '<table>';
1.103 matthew 213: for (my $plot_num = 1;$plot_num<=$ENV{'form.NumPlots'};$plot_num++) {
214: my $restriction_function;
1.104 matthew 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: $no_data_message = 'No data for [_2] to [_3]';
262: }
1.103 matthew 263: #
1.106 matthew 264: my ($correct,$answers) =
265: &numerical_determine_answers($r,$resource,$partid,
266: $respid,$students);
1.103 matthew 267: if ($c->aborted()) { return; };
268: #
1.106 matthew 269: my $responses = &numerical_classify_responses($response_data,$correct,
1.104 matthew 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: }
1.66 matthew 299: }
1.104 matthew 300: $analysis_html.='</table>';
301: $r->print($analysis_html);
1.78 matthew 302: #
1.103 matthew 303: return;
304: }
1.102 matthew 305:
1.103 matthew 306: sub numerical_plot_percent {
307: my ($r,$responses) = @_;
308: #
309: my $total = $responses->{'_count'};
310: return '' if ($total == 0);
1.106 matthew 311: my $minbin = 5;
1.103 matthew 312: while (my ($interval,$submissions) = each(%$responses)) {
313: next if ($interval =~ /^_/);
314: my ($ans,$ans_low,$ans_high) = split(" ",$interval);
1.106 matthew 315: my $low_percent = abs(100*($ans-$ans_low)/$ans);
316: my $high_percent = abs(100*($ans_high-$ans)/$ans);
1.103 matthew 317: if ($minbin > $high_percent) { $minbin = $high_percent; }
318: if ($minbin > $low_percent) { $minbin = $low_percent; }
1.106 matthew 319: }
1.103 matthew 320: #
321: my @bins;
322: if ($minbin < 1) {
1.104 matthew 323: @bins = ('0.1','0.5','1.0','1.5','2.0','2.5','3.0','4.0','5.0',10,20,50,100);
1.103 matthew 324: } elsif ($minbin < 2) {
1.104 matthew 325: @bins = ('0.5','1.0','1.5','2.0','2.5','3.0','4.0','5.0',10,20,50,100);
1.103 matthew 326: } elsif ($minbin < 5) {
327: @bins = (1,2,3,4,5,10,25,50,75,100,200);
328: } elsif ($minbin < 10) {
329: @bins = (2,4,6,8,10,12,15,20,25,30,50,75,100,200);
330: } else {
331: @bins = (5,10,15,20,25,30,50,75,100,200);
332: }
333: my @labels = (1..scalar(@bins));
334: #
335: my @correct;
336: my @incorrect;
1.104 matthew 337: my @count;
1.103 matthew 338: while (my ($interval,$submissions) = each(%$responses)) {
339: next if ($interval =~ /^_/);
340: my ($ans,$ans_low,$ans_high) = split(" ",$interval);
1.104 matthew 341: while (my ($submission,$counts) = each(%$submissions)) {
342: my ($correct_count,$incorrect_count) = @$counts;
1.103 matthew 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: }
1.104 matthew 348: $correct[$bin]+=$correct_count;
349: $incorrect[$bin]+=$incorrect_count;
350: $count[$bin]+=$correct_count+$incorrect_count;
1.103 matthew 351: }
352: }
353: #
1.104 matthew 354: my @plot_correct;
355: my @plot_incorrect;
1.103 matthew 356: for (my $i=0;$i<=$#bins;$i++) {
1.104 matthew 357: $plot_correct[$i] = $correct[$i]*100/$total;
358: $plot_incorrect[$i] = $incorrect[$i]*100/$total;
1.103 matthew 359: }
360: my $title = &mt('Distribution by Percent');
361: my $graph = &Apache::loncommon::DrawBarGraph
362: ($title,'Percent difference from correct','Number of answers',
1.104 matthew 363: 100,['#33FF00','#FF3300'],\@labels,\@plot_correct,\@plot_incorrect,
1.103 matthew 364: {xskip=>1});
365: #
1.104 matthew 366: my $table = $graph.$/.
367: &numerical_bin_table(\@bins,\@labels,\@incorrect,\@correct,\@count).$/;
1.103 matthew 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;
1.104 matthew 403: my @count;
1.103 matthew 404: while (my ($interval,$submissions) = each(%$responses)) {
405: next if ($interval =~ /^_/);
406: my ($ans,$ans_low,$ans_high) = split(" ",$interval);
1.104 matthew 407: while (my ($submission,$counts) = each(%$submissions)) {
408: my ($correct_count,$incorrect_count) = @$counts;
1.103 matthew 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: }
1.104 matthew 414: $correct[$bin]+=$correct_count;
415: $incorrect[$bin]+=$incorrect_count;
416: $count[$bin]+=$correct_count+$incorrect_count;
1.103 matthew 417: }
418: }
419: #
1.104 matthew 420: my @plot_correct;
421: my @plot_incorrect;
1.103 matthew 422: for (my $i=0;$i<=$#bins;$i++) {
1.104 matthew 423: $plot_correct[$i] = $correct[$i]*100/$total;
424: $plot_incorrect[$i] = $incorrect[$i]*100/$total;
1.103 matthew 425: }
426: my $title = &mt('Distribution by Magnitude');
427: my $graph = &Apache::loncommon::DrawBarGraph
428: ($title,'magnitude difference from correct','Number of answers',
1.104 matthew 429: 100,['#33FF00','#FF3300'],\@labels,\@plot_correct,\@plot_incorrect,
430: {xskip=>1});
1.103 matthew 431: #
1.104 matthew 432: my $table = $graph.$/.
433: &numerical_bin_table(\@bins,\@labels,\@incorrect,\@correct,\@count).$/;
434: return $table;
435: }
436:
437: sub numerical_classify_responses {
1.106 matthew 438: &Apache::lonnet::logthis('--------------');
1.104 matthew 439: my ($full_row_data,$correct,$function) = @_;
440: my %submission_data;
441: my %students;
442: my $max=0;
443: foreach my $row (@$full_row_data) {
1.106 matthew 444: # &Apache::lonnet::logthis(' row = '.join(',',@$row));
1.104 matthew 445: my %subm = &hashify_attempt($row);
446: if (ref($correct) eq 'HASH') {
1.106 matthew 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'};
1.104 matthew 452: }
453: $subm{'submission'} =~ s/=\d+\s*$//;
454: if (&$function(\%subm)) {
1.106 matthew 455: my $scaled = '1';
456: my ($sname,$sdom) = split(':',$subm{'student'});
457: # Note that $subm{'unit'} is modified by the following call
458: # We do not use it again but you should be aware just in case.
1.109 ! matthew 459: my ($myunit,$mysub) = ($subm{'unit'},$subm{'submission'});
! 460: my $result =
! 461: &capa::caparesponse_get_real_response($myunit,
! 462: $mysub,
! 463: \$scaled);
! 464: next if (! defined($scaled));
! 465: next if ($result ne '6');
! 466: my $submission = $scaled;
1.104 matthew 467: $students{$subm{'student'}}++;
468: if (&numerical_submission_is_correct($subm{'award'})) {
1.106 matthew 469: &Apache::lonnet::logthis('correct:'.$submission.':'.$subm{'correct'});
1.104 matthew 470: $submission_data{'_correct'}++;
471: $submission_data{'_count'}++;
472: $submission_data{$subm{'correct'}}->{$submission}->[0]++;
473: } elsif (&numerical_submission_is_incorrect($subm{'award'})) {
1.106 matthew 474: &Apache::lonnet::logthis('incorrect:'.$submission.':'.$subm{'correct'});
1.104 matthew 475: $submission_data{'_count'}++;
476: $submission_data{$subm{'correct'}}->{$submission}->[1]++;
477: }
478: my $value =
479: $submission_data{$subm{'correct'}}->{$submission}->[0]+
480: $submission_data{$subm{'correct'}}->{$submission}->[1];
481: if ($max < $value) { $max = $value; }
482: }
483: }
484: $submission_data{'_max'} = $max;
485: $submission_data{'_students'}=scalar(keys(%students));
486: return \%submission_data;
487: }
488:
489: sub numerical_submission_is_correct {
490: my ($award) = @_;
1.106 matthew 491: &Apache::lonnet::logthis('award = "'.$award.'"');
1.104 matthew 492: if ($award =~ /^(APPROX_ANS|EXACT_ANS)$/) {
493: return 1;
494: } else {
495: return 0;
496: }
497: }
498:
499: sub numerical_submission_is_incorrect {
500: my ($award) = @_;
501: if ($award =~ /^(INCORRECT)$/) {
502: return 1;
503: } else {
504: return 0;
505: }
506: }
507:
508: sub numerical_bin_table {
509: my ($bins,$labels,$incorrect,$correct,$count)=@_;
510: my $table =
511: '<table><tr><th>'.&mt('Bar').'</th>'.
512: '<th colspan="3">'.&mt('Range').'</th>'.
513: '<th>'.&mt('Incorrect').'</th>'.
514: '<th>'.&mt('Correct').'</th>'.
515: '<th>'.&mt('Count').'</th>'.
516: '</tr>'.$/;
517: for (my $i=0;$i<scalar(@{$bins});$i++) {
1.103 matthew 518: my $lownum;
519: if ($i == 0) {
520: $lownum = 0;
521: } else {
1.104 matthew 522: $lownum = $bins->[$i-1];
1.103 matthew 523: }
1.104 matthew 524: my $highnum = $bins->[$i];
1.103 matthew 525: $table .=
526: '<tr>'.
1.104 matthew 527: '<td>'.$labels->[$i].'</td>'.
1.103 matthew 528: '<td align="right">'.$lownum.'</td>'.
529: '<td> - </td>'.
1.104 matthew 530: '<td align="right">'.$highnum.'</td>'.
531: '<td align="right">'.$incorrect->[$i].'</td>'.
532: '<td align="right">'.$correct->[$i].'</td>'.
533: '<td align="right">'.$count->[$i].'</td>'.
534: '</tr>'.$/;
1.103 matthew 535: }
1.104 matthew 536: $table.= '</table>';
1.103 matthew 537: return $table;
1.66 matthew 538: }
539:
1.106 matthew 540: sub numerical_determine_answers {
1.103 matthew 541: my ($r,$resource,$partid,$respid,$students)=@_;
542: my $c = $r->connection();
1.78 matthew 543: #
1.104 matthew 544: # FIX ME: May need progress dialog updates
1.103 matthew 545: #
546: # Read in the cache (if it exists) before we start timing things.
547: &Apache::lonstathelpers::ensure_proper_cache($resource->{'symb'});
548: #
549: my $correct;
550: my %answers;
551: foreach my $student (@$students) {
552: last if ($c->aborted());
553: my $sname = $student->{'username'};
554: my $sdom = $student->{'domain'};
555: # analyze problem
556: my $analysis =
557: &Apache::lonstathelpers::analyze_problem_as_student($resource,
558: $sname,
559: $sdom);
560: # make the key
561: my $key = $partid.'.'.$respid;
1.106 matthew 562: $correct->{$sname.':'.$sdom}->{'answer'} =
563: $analysis->{$key.'.answer'}->[0];
564: $correct->{$sname.':'.$sdom}->{'unit'} =
565: $analysis->{$key.'.unit'}->[0];
1.103 matthew 566: $answers{$analysis->{$key.'.answer'}->[0]}++;
1.82 matthew 567: }
1.103 matthew 568: &Apache::lonstathelpers::write_analysis_cache();
1.106 matthew 569: return ($correct,\%answers);
1.103 matthew 570: }
571:
1.104 matthew 572: #
573: # Inputs: $r, $width, $height, $data
574: # $n = number of students
575: # $data = hashref of $answer => $frequency pairs
1.103 matthew 576: sub numerical_one_dimensional_plot {
1.104 matthew 577: my ($r,$width,$height,$data)=@_;
1.78 matthew 578: #
1.103 matthew 579: # Compute data -> image scaling factors
1.78 matthew 580: my $max_y = 0;
1.103 matthew 581: my $min_x = undef;
582: my $max_x = undef;
1.104 matthew 583: my $n = 0;
1.103 matthew 584: while (my ($answer,$count) = each(%$data)) {
1.104 matthew 585: $n+=$count;
1.103 matthew 586: $max_y = $count if ($max_y < $count);
587: if (! defined($min_x) || $answer < $min_x) {
588: $min_x = $answer;
589: }
590: if (! defined($max_x) || $answer > $max_x) {
591: $max_x = $answer;
592: }
1.78 matthew 593: }
1.103 matthew 594: #
1.106 matthew 595: my $min_max_difference = $max_x - $min_x;
596: if (! defined($min_max_difference) || $min_max_difference == 0) {
597: $min_max_difference = 1;
598: }
599: my $h_scale = ($width-10)/$min_max_difference;
1.103 matthew 600: #
1.78 matthew 601: my $ticscale = 5;
602: if ($max_y * $ticscale > $height/2) {
603: $ticscale = int($height/2/$max_y);
604: $ticscale = 1 if ($ticscale < 1);
605: }
606: #
607: # Create the plot
608: my $plot =
609: qq{<drawimage width="$width" height="$height" bgcolor="transparent" >};
1.103 matthew 610: while (my ($answer,$count) = each(%$data)) {
611: my $xloc = 5+$h_scale*($answer - $min_x);
612: my $top = $height/2-$count*$ticscale;
613: my $bottom = $height/2+$count*$ticscale;
614: $plot .= &line($xloc,$top,$xloc,$bottom,'888888',1);
1.78 matthew 615: }
616: #
617: # Put the scale on last to ensure it is on top of the data.
1.103 matthew 618: if ($min_x < 0 && $max_x > 0) {
619: my $circle_x = 5+$h_scale*abs($min_x); # '0' in data coordinates
1.78 matthew 620: my $r = 4;
621: $plot .= &line(5,$height/2,$circle_x-$r,$height/2,'000000',1);
622: $plot .= &circle($circle_x,$height/2,$r+1,'000000');
623: $plot .= &line($circle_x+$r,$height/2,$width-5,$height/2,'000000',1);
624: } else {
625: $plot .= &line(5,$height/2,$width-5,$height/2,'000000',1);
626: }
627: $plot .= '</drawimage>';
628: my $plotresult = &Apache::lonxml::xmlparse($r,'web',$plot);
629: my $result = '<table>'.
630: '<tr><td colspan="3" align="center">'.
1.103 matthew 631: '<font size="+2">'.&mt('Distribution of correct answers').'</font>'.
632: '<br />'.&mt('[_1] students, [_2] distinct correct answers',
633: $n,scalar(keys(%$data))).
634: '<br />'.&mt('Maximum number of coinciding values: [_1]',$max_y).
1.78 matthew 635: '</td></tr>'.
636: '<tr>'.
1.103 matthew 637: '<td valign="center">'.$min_x.'</td>'.
1.78 matthew 638: '<td>'.$plotresult.'</td>'.
1.103 matthew 639: '<td valign="center">'.$max_x.'</td>'.
1.78 matthew 640: '</tr>'.
641: '</table>';
642: return $result;
643: }
644:
645: ##
646: ## Helper subroutines for <drawimage>.
647: ## These should probably go somewhere more suitable soon.
648: sub line {
649: my ($x1,$y1,$x2,$y2,$color,$thickness) = @_;
1.103 matthew 650: return qq{<line x1="$x1" y1="$y1" x2="$x2" y2="$y2" color="$color" thickness="$thickness" />};
1.78 matthew 651: }
652:
1.82 matthew 653: sub text {
654: my ($x,$y,$color,$text,$font,$direction) = @_;
655: if (! defined($font) || $font !~ /^(tiny|small|medium|large|giant)$/) {
656: $font = 'medium';
657: }
658: if (! defined($direction) || $direction ne 'vertical') {
659: $direction = '';
660: }
661: return qq{<text x="$x" y="$y" color="$color" font="$font" direction="$direction" >$text</text>};
662: }
663:
1.78 matthew 664: sub rectangle {
665: my ($x1,$y1,$x2,$y2,$color,$thickness,$filled) = @_;
666: return qq{<rectangle x1="$x1" y1="$y1" x2="$x2" y2="$y2" color="$color" thickness="$thickness" filled="$filled" />};
667: }
668:
669: sub arc {
670: my ($x,$y,$width,$height,$start,$end,$color,$thickness,$filled)=@_;
671: return qq{<arc x="$x" y="$y" width="$width" height="$height" start="$start" end="$end" color="$color" thickness="$thickness" filled="$filled" />};
672: }
673:
674: sub circle {
675: my ($x,$y,$radius,$color,$thickness,$filled)=@_;
676: return &arc($x,$y,$radius,$radius,0,360,$color,$thickness,$filled);
1.68 matthew 677: }
678:
1.47 matthew 679: #########################################################
680: #########################################################
681: ##
682: ## Radio Response Routines
683: ##
684: #########################################################
685: #########################################################
1.97 matthew 686: sub radio_response_analysis {
1.94 matthew 687: my ($r,$problem,$problem_analysis,$students) = @_;
1.97 matthew 688: #
689: if ($ENV{'form.AnalyzeOver'} !~ /^(tries|time)$/) {
1.94 matthew 690: $r->print('Bad request');
691: }
1.97 matthew 692: #
1.94 matthew 693: my ($resource,$partid,$respid) = ($problem->{'resource'},
694: $problem->{'part'},
695: $problem->{'respid'});
696: #
697: my $analysis_html;
698: my $foildata = $problem_analysis->{'_Foils'};
699: my ($table,$foils,$concepts) = &build_foil_index($problem_analysis);
1.106 matthew 700: if (! defined($concepts)) {
701: $concepts = [];
702: }
1.97 matthew 703: #
1.98 matthew 704: my %true_foils;
1.97 matthew 705: my $num_true = 0;
1.98 matthew 706: if (! $problem_analysis->{'answercomputed'}) {
707: foreach my $foil (@$foils) {
708: if ($foildata->{$foil}->{'value'} eq 'true') {
709: $true_foils{$foil}++;
710: }
1.97 matthew 711: }
1.98 matthew 712: $num_true = scalar(keys(%true_foils));
1.97 matthew 713: }
714: #
1.94 matthew 715: $analysis_html .= $table;
716: # Gather student data
717: my $response_data = &Apache::loncoursedata::get_response_data
718: (\@Apache::lonstatistics::SelectedSections,
719: $Apache::lonstatistics::enrollment_status,
720: $resource->{'symb'},$respid);
721: my $correct; # either a hash reference or a scalar
722: if ($problem_analysis->{'answercomputed'} || scalar(@$concepts) > 1) {
723: # This takes a while for large classes...
724: &Apache::lonstathelpers::GetStudentAnswers($r,$problem,$students,
725: 'Statistics',
726: 'stats_status');
727: foreach my $student (@$students) {
728: my ($idx,@remainder) = split('&',$student->{'answer'});
729: my ($answer) = ($remainder[$idx]=~/^(.*)=([^=]*)$/);
730: $correct->{$student->{'username'}.':'.$student->{'domain'}}=
731: &Apache::lonnet::unescape($answer);
732: }
733: } else {
734: foreach my $foil (keys(%$foildata)) {
735: if ($foildata->{$foil}->{'value'} eq 'true') {
736: $correct = $foildata->{$foil}->{'name'};
737: }
738: }
739: }
1.97 matthew 740: #
741: if (! defined($response_data) || ref($response_data) ne 'ARRAY' ) {
1.94 matthew 742: $analysis_html = '<h2>'.
743: &mt('There is no submission data for this resource').
744: '</h2>';
745: $r->print($analysis_html);
746: return;
747: }
748: #
749: $analysis_html.='<table>';
1.97 matthew 750: for (my $plot_num = 1;$plot_num<=$ENV{'form.NumPlots'};$plot_num++) {
1.94 matthew 751: # classify data ->correct foil -> selected foil
1.97 matthew 752: my ($restriction_function,
753: $correct_foil_title,$incorrect_foil_title,
754: $pre_graph_text,$post_graph_text,
755: $no_data_text,@extra_data);
756: if ($ENV{'form.AnalyzeOver'} eq 'tries') {
757: $restriction_function = sub {($_[0]->{'tries'} == $plot_num?1:0)};
758: $correct_foil_title = 'Attempt '.$plot_num;
759: $incorrect_foil_title = 'Attempt '.$plot_num;
760: $pre_graph_text =
761: 'Attempt [_1], [_2] submissions, [_3] correct, [_4] incorrect';
762: $post_graph_text = '';
763: $no_data_text = 'No data exists for attempt [_1]';
764: } elsif ($ENV{'form.AnalyzeOver'} eq 'time') {
765: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
766: ('startdate_'.$plot_num);
767: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
768: ('enddate_'.$plot_num);
769: ($starttime,$endtime) = &ensure_start_end_times
770: ($starttime,$endtime,
771: &get_time_from_row($response_data->[0]),
772: &get_time_from_row($response_data->[-1]),
773: $plot_num);
774: $pre_graph_text =
1.102 matthew 775: 'Data from [_6] to [_7]<br /> [_2] submissions from [_5] students, [_3] correct, [_4] incorrect';
1.97 matthew 776: $extra_data[0] = &Apache::lonlocal::locallocaltime($starttime);
777: $extra_data[1] = &Apache::lonlocal::locallocaltime($endtime);
778: #
779: $post_graph_text =
780: &mt('Start time: [_1]',
781: &Apache::lonhtmlcommon::date_setter
782: ('Statistics','startdate_'.$plot_num,$starttime)).
783: '<br />'.
784: &mt('End time: [_1]',
785: &Apache::lonhtmlcommon::date_setter
786: ('Statistics','enddate_'.$plot_num,$endtime));
787: $restriction_function =
788: sub {
789: my $t = $_[0]->{'timestamp'};
790: if ($t >= $starttime && $t < $endtime) {
791: return 1;
792: } else {
793: return 0;
794: }
795: };
796: $no_data_text = 'No data for [_5] to [_6]';
797: }
798: my $foil_choice_data =
1.103 matthew 799: &classify_response_data($response_data,$correct,
800: $restriction_function);
1.97 matthew 801: # &Apache::lonstathelpers::log_hash_ref($foil_choice_data);
1.94 matthew 802: my $answers;
803: if (ref($correct)) {
804: my %tmp;
805: foreach my $foil (values(%$correct)) {
806: $tmp{$foil}++;
807: }
808: $answers = [keys(%tmp)];
809: } else {
810: $answers = [$correct];
811: }
812: # Concept Plot
813: my $concept_plot = '';
814: if (scalar(@$concepts) > 1) {
815: $concept_plot = &RR_concept_plot($concepts,$foil_choice_data,
1.97 matthew 816: 'Correct Concepts');
1.94 matthew 817: }
818: # % Choosing plot
819: my $choice_plot = &RR_create_percent_selected_plot
1.97 matthew 820: ($concepts,$foils,$foil_choice_data,$correct_foil_title);
1.94 matthew 821: # for each correct foil, how did they mark it? (stacked bar graph)
1.97 matthew 822: my ($stacked_plot,$count_by_foil);
823: if ($problem_analysis->{'answercomputed'} || $num_true > 1) {
824: ($stacked_plot,$count_by_foil) =
825: &RR_create_stacked_selection_plot($foils,$foil_choice_data,
1.98 matthew 826: $incorrect_foil_title,
827: \%true_foils);
1.97 matthew 828: }
1.94 matthew 829: #
830: if ($concept_plot ne '' ||
1.97 matthew 831: $choice_plot ne '' ||
1.94 matthew 832: $stacked_plot ne '') {
1.97 matthew 833: my $correct = $foil_choice_data->{'_correct'};
834: if (! defined($correct) || $correct eq '') {
835: $correct = 0;
836: }
837: my $incorrect =
838: $analysis_html.= '<tr><td colspan="4" align="center">'.
839: '<font size="+1">'.
840: &mt($pre_graph_text,
841: $plot_num,$foil_choice_data->{'_count'},
1.102 matthew 842: $correct,
1.97 matthew 843: $foil_choice_data->{'_count'}-$correct,
1.102 matthew 844: $foil_choice_data->{'_students'},
1.97 matthew 845: @extra_data).
846: '</td></tr>'.$/;
1.94 matthew 847: $analysis_html.=
848: '<tr>'.
849: '<td>'.$concept_plot.'</td>'.
850: '<td>'.$choice_plot.'</td>';
851: if ($stacked_plot ne '') {
852: $analysis_html .=
1.97 matthew 853: '<td>'.$stacked_plot.'</td>'.
854: '<td>'.&build_foil_key($foils,$count_by_foil).'</td>';
1.94 matthew 855: } else {
856: $analysis_html .= ('<td></td>'x2);
857: }
858: $analysis_html.='</tr>'.$/;
1.97 matthew 859: if (defined($post_graph_text)) {
860: $analysis_html.= '<tr><td colspan="4" align="center">'.
861: $post_graph_text.'</td></tr>'.$/;
862: }
863: } elsif ($no_data_text ne '') {
864: $analysis_html.='<tr><td colspan="4" align="center">'.
865: &mt($no_data_text,
866: $plot_num,$foil_choice_data->{'_count'},
867: $correct,
868: $foil_choice_data->{'_count'}-$correct,
869: @extra_data);
870: if (defined($post_graph_text)) {
871: $analysis_html.='<br />'.$post_graph_text;
872: }
873: $analysis_html.='</td></tr>'.$/;
1.94 matthew 874: }
1.97 matthew 875: } # end of loop for plots
1.94 matthew 876: $analysis_html.='</table>';
877: $r->print($analysis_html);
878: }
879:
1.97 matthew 880: sub ensure_start_end_times {
881: my ($start,$end,$first,$last,$plot_num) = @_;
882: if (! defined($start) || ! defined($end)) {
883: my $sec_in_day = 86400;
884: my ($sday,$smon,$syear) =
885: (localtime($last - $sec_in_day*($plot_num-1)))[3..5];
886: $start = &Time::Local::timelocal(0,0,0,$sday,$smon,$syear);
887: $end = $start + $sec_in_day;
888: if ($plot_num == $ENV{'form.NumPlots'}) {
889: $start = $first;
890: }
891: }
892: return ($start,$end);
893: }
1.94 matthew 894:
895: sub RR_concept_plot {
896: my ($concepts,$foil_data,$title) = @_;
897: #
898: my %correct_by_concept;
899: my %incorrect_by_concept;
900: my %true;
901: foreach my $concept (@$concepts) {
902: foreach my $foil (@{$concept->{'foils'}}) {
903: next if (! exists($foil_data->{$foil}));
904: foreach my $choice (keys(%{$foil_data->{$foil}})) {
905: if ($choice eq $foil) {
906: $correct_by_concept{$concept->{'name'}} +=
907: $foil_data->{$foil}->{$choice};
908: } else {
909: $incorrect_by_concept{$concept->{'name'}} +=
910: $foil_data->{$foil}->{$choice};
911:
912: }
913: }
914: }
915: }
916: #
917: # need arrays for incorrect and correct because we want to use different
918: # colors for them
919: my @correct;
920: #
921: my $total =0;
922: for (my $i=0;$i<scalar(@$concepts);$i++) {
923: my $concept = $concepts->[$i];
924: $correct[$i] = $correct_by_concept{$concept->{'name'}};
925: $total += $correct_by_concept{$concept->{'name'}}+
926: $incorrect_by_concept{$concept->{'name'}};
927: }
928: if ($total == 0) { return ''; };
929: for (my $i=0;$i<=$#correct;$i++) {
930: $correct[$i] = sprintf('%0f',$correct[$i]/$total*100);
931: }
932: my $xlabel = 'concept';
933: my $plot= &Apache::loncommon::DrawBarGraph($title,
934: $xlabel,
935: 'Percent Choosing',
936: 100,
937: ['#33ff00','#ff3300'],
938: undef,
939: \@correct);
940: return $plot;
941: }
942:
943: sub RR_create_percent_selected_plot {
1.97 matthew 944: my ($concepts,$foils,$foil_data,$title) = @_;
1.94 matthew 945: #
1.99 matthew 946: if ($foil_data->{'_count'} == 0) { return ''; };
947: my %correct_selections;
948: my %incorrect_selections;
1.94 matthew 949: foreach my $foil (@$foils) {
1.101 matthew 950: # foil_data has format $foil_data->{true_foil}->{selected foil}=count
1.94 matthew 951: next if (! exists($foil_data->{$foil}));
952: while (my ($f,$count)= each(%{$foil_data->{$foil}})) {
1.99 matthew 953: if ($f eq $foil) {
954: $correct_selections{$foil} += $count;
955: } else {
1.101 matthew 956: $incorrect_selections{$f} += $count;
1.99 matthew 957: }
1.94 matthew 958: }
959: }
960: #
961: # need arrays for incorrect and correct because we want to use different
962: # colors for them
963: my @correct;
964: my @incorrect;
965: #
1.99 matthew 966: my $total = $foil_data->{'_count'};
1.94 matthew 967: for (my $i=0;$i<scalar(@$foils);$i++) {
968: my $foil = $foils->[$i];
1.99 matthew 969: $correct[$i] = $correct_selections{$foil};
970: $incorrect[$i] = $incorrect_selections{$foil};
1.94 matthew 971: }
972: for (my $i=0;$i<=$#correct;$i++) {
1.99 matthew 973: $correct[$i] = sprintf('%2f',$correct[$i]/$total*100);
1.94 matthew 974: }
975: for (my $i=0;$i<=$#incorrect;$i++) {
1.99 matthew 976: $incorrect[$i] = sprintf('%2f',$incorrect[$i]/$total*100);
1.94 matthew 977: }
1.97 matthew 978: #
979: # Put a blank in the data sets between concepts, if there are concepts
980: my @labels;
981: if (defined($concepts) && scalar(@$concepts) > 1) {
982: my @new_correct;
983: my @new_incorrect;
984: my $foil_count = 0;
985: foreach my $concept (@$concepts) {
986: foreach (@{$concept->{'foils'}}) {
987: push(@new_correct, $correct[$foil_count]);
988: push(@new_incorrect,$incorrect[$foil_count]);
989: push(@labels,++$foil_count);
990: }
991: push(@new_correct,'');
992: push(@new_incorrect,'');
993: push(@labels,'');
994: }
995: @correct = @new_correct;
996: @incorrect = @new_incorrect;
997: } else {
998: @labels = (1 .. scalar(@correct));
999: }
1000: #
1.94 matthew 1001: my $xlabel = 'foil chosen';
1002: my $plot= &Apache::loncommon::DrawBarGraph($title,
1003: $xlabel,
1004: 'Percent Choosing',
1005: 100,
1006: ['#33ff00','#ff3300'],
1.97 matthew 1007: \@labels,
1.94 matthew 1008: \@correct,
1009: \@incorrect);
1010: return $plot;
1011: }
1012:
1013: sub RR_create_stacked_selection_plot {
1.98 matthew 1014: my ($foils,$foil_data,$title,$true_foils)=@_;
1.94 matthew 1015: #
1.97 matthew 1016: my @dataset; # array of array refs - multicolor rows $datasets[row]->[col]
1.94 matthew 1017: my @labels;
1.97 matthew 1018: my $count;
1019: my %column; # maps foil name to column in @datasets
1.94 matthew 1020: for (my $i=0;$i<scalar(@$foils);$i++) {
1.98 matthew 1021: my $foil = $foils->[$i];
1022: if (defined($true_foils) && scalar(keys(%$true_foils)) > 0 ) {
1023: next if (! $true_foils->{$foil} );
1024: push(@labels,$i+1);
1025: } else {
1026: next if (! exists($foil_data->{$foil}));
1027: push(@labels,$i+1);
1028: }
1.94 matthew 1029: next if (! exists($foil_data->{$foils->[$i]}));
1.98 matthew 1030: $column{$foil}= $count++;
1.94 matthew 1031: for (my $j=0;$j<scalar(@$foils);$j++) {
1032: my $value = 0;
1033: if ($i != $j ) {
1.98 matthew 1034: $value += $foil_data->{$foil}->{$foils->[$j]};
1.94 matthew 1035: }
1.98 matthew 1036: $dataset[$j]->[$column{$foil}]=$value;
1.94 matthew 1037: }
1038: }
1039: #
1040: return '' if (! scalar(keys(%column)));
1041: #
1042: my $grand_total = 0;
1043: my %count_per_foil;
1044: while (my ($foil,$bar) = each (%column)) {
1045: my $bar_total = 0;
1046: for (my $j=0;$j<scalar(@dataset);$j++) {
1047: $bar_total += $dataset[$j]->[$bar];
1048: }
1049: next if ($bar_total == 0);
1050: for (my $j=0;$j<scalar(@dataset);$j++) {
1051: $dataset[$j]->[$bar] =
1052: sprintf('%2f',$dataset[$j]->[$bar]/$bar_total * 100);
1053: }
1.97 matthew 1054: $count_per_foil{$foil}=' ( '.$bar_total.' )';
1.94 matthew 1055: $grand_total += $bar_total;
1056: }
1057: if ($grand_total == 0) {
1058: return ('',undef);
1059: }
1060: my @empty_row = ();
1061: foreach (@{$dataset[0]}) {
1062: push(@empty_row,0);
1063: }
1064: #
1065: my $graph = &Apache::loncommon::DrawBarGraph
1066: ($title,'Correct Foil','foils chosen Incorrectly',
1067: 100,$plotcolors,\@labels,\@empty_row,@dataset);
1068: return ($graph,\%count_per_foil);
1069: }
1070:
1.103 matthew 1071:
1072: #########################################################
1073: #########################################################
1074: ##
1075: ## Misc routines
1076: ##
1077: #########################################################
1078: #########################################################
1079:
1.94 matthew 1080: # if $correct is a hash ref, it is assumed to be indexed by student names.
1081: # the values are assumed to be hash refs with a key of 'answer'.
1.103 matthew 1082: sub classify_response_data {
1.94 matthew 1083: my ($full_row_data,$correct,$function) = @_;
1084: my %submission_data;
1.102 matthew 1085: my %students;
1.103 matthew 1086: my $max=0;
1.94 matthew 1087: foreach my $row (@$full_row_data) {
1088: my %subm = &hashify_attempt($row);
1089: if (ref($correct) eq 'HASH') {
1090: $subm{'correct'} = $correct->{$subm{'student'}};
1091: } else {
1092: $subm{'correct'} = $correct;
1093: }
1094: $subm{'submission'} =~ s/=\d+\s*$//;
1095: if (&$function(\%subm)) {
1.102 matthew 1096: $students{$subm{'student'}}++;
1.97 matthew 1097: $submission_data{'_count'}++;
1098: if (&submission_is_correct($subm{'award'})) {
1099: $submission_data{'_correct'}++;
1100: }
1.103 matthew 1101:
1102: if($max<++$submission_data{$subm{'correct'}}->{$subm{'submission'}}) {
1103: $max=$submission_data{$subm{'correct'}}->{$subm{'submission'}};
1104: }
1.94 matthew 1105: }
1106: }
1.103 matthew 1107: $submission_data{'_max'} = $max;
1.102 matthew 1108: $submission_data{'_students'}=scalar(keys(%students));
1.94 matthew 1109: return \%submission_data;
1110: }
1111:
1112:
1.33 matthew 1113: #########################################################
1114: #########################################################
1115: ##
1.46 matthew 1116: ## Option Response Routines
1.33 matthew 1117: ##
1118: #########################################################
1119: #########################################################
1.46 matthew 1120: sub OptionResponseAnalysis {
1.88 matthew 1121: my ($r,$problem,$problem_data,$Students) = @_;
1.56 matthew 1122: my ($resource,$respid) = ($problem->{'resource'},
1123: $problem->{'respid'});
1124: # Note: part data is not needed.
1.82 matthew 1125: my $PerformanceData = &Apache::loncoursedata::get_response_data
1126: (\@Apache::lonstatistics::SelectedSections,
1127: $Apache::lonstatistics::enrollment_status,
1128: $resource->{'symb'},$respid);
1.46 matthew 1129: if (! defined($PerformanceData) ||
1130: ref($PerformanceData) ne 'ARRAY' ) {
1131: $r->print('<h2>'.
1132: &mt('There is no student data for this problem.').
1133: '</h2>');
1134: } else {
1135: $r->rflush();
1136: if (exists($ENV{'form.ExcelOutput'})) {
1.57 matthew 1137: my $result = &OR_excel_sheet($r,$resource,
1138: $PerformanceData,
1.88 matthew 1139: $problem_data);
1.46 matthew 1140: $r->print($result);
1141: $r->rflush();
1.39 matthew 1142: } else {
1.94 matthew 1143: if ($ENV{'form.AnalyzeOver'} eq 'tries') {
1.57 matthew 1144: my $analysis_html = &OR_tries_analysis($r,
1.46 matthew 1145: $PerformanceData,
1.88 matthew 1146: $problem_data);
1.46 matthew 1147: $r->print($analysis_html);
1148: $r->rflush();
1.94 matthew 1149: } elsif ($ENV{'form.AnalyzeOver'} eq 'time') {
1.57 matthew 1150: my $analysis_html = &OR_time_analysis($PerformanceData,
1.88 matthew 1151: $problem_data);
1.46 matthew 1152: $r->print($analysis_html);
1153: $r->rflush();
1.39 matthew 1154: } else {
1.46 matthew 1155: $r->print('<h2>'.
1156: &mt('The analysis you have selected is '.
1157: 'not supported at this time').
1158: '</h2>');
1159: }
1.36 matthew 1160: }
1.39 matthew 1161: }
1162: }
1163:
1.33 matthew 1164: #########################################################
1.46 matthew 1165: #
1.94 matthew 1166: # Option Response: tries Analysis
1.46 matthew 1167: #
1.33 matthew 1168: #########################################################
1.57 matthew 1169: sub OR_tries_analysis {
1.43 matthew 1170: my ($r,$PerformanceData,$ORdata) = @_;
1.33 matthew 1171: my $mintries = 1;
1172: my $maxtries = $ENV{'form.NumPlots'};
1.39 matthew 1173: my ($table,$Foils,$Concepts) = &build_foil_index($ORdata);
1.107 matthew 1174: if (! defined($Concepts)) {
1175: $Concepts = [];
1176: }
1.88 matthew 1177: my %response_data = &OR_analyze_by_tries($r,$PerformanceData,
1.36 matthew 1178: $mintries,$maxtries);
1.42 matthew 1179: my $analysis = '';
1.31 matthew 1180: #
1.88 matthew 1181: # Compute the data necessary to make the plots
1182: my @foil_plot;
1183: my @concept_data;
1184: for (my $j=0;$j<=scalar(@$Concepts);$j++) {
1185: my $concept = $Concepts->[$j];
1.75 matthew 1186: foreach my $foilid (@{$concept->{'foils'}}) {
1.76 matthew 1187: for (my $try=$mintries;$try<=$maxtries;$try++) {
1.88 matthew 1188: # concept analysis data
1.93 matthew 1189: $concept_data[$j]->[$try]->{'_correct'} +=
1.88 matthew 1190: $response_data{$foilid}->[$try]->{'_correct'};
1.93 matthew 1191: $concept_data[$j]->[$try]->{'_total'} +=
1.88 matthew 1192: $response_data{$foilid}->[$try]->{'_total'};
1193: #
1194: # foil analysis data
1195: if ($response_data{$foilid}->[$try]->{'_total'} == 0) {
1196: push(@{$foil_plot[$try]->{'_correct'}},0);
1.42 matthew 1197: } else {
1.88 matthew 1198: push(@{$foil_plot[$try]->{'_correct'}},
1199: 100*$response_data{$foilid}->[$try]->{'_correct'}/
1200: $response_data{$foilid}->[$try]->{'_total'});
1.75 matthew 1201: }
1202: foreach my $option (@{$ORdata->{'_Options'}}) {
1.88 matthew 1203: push(@{$foil_plot[$try]->{'_total'}},
1204: $response_data{$foilid}->[$try]->{'_total'});
1205: if ($response_data{$foilid}->[$try]->{'_total'} == 0) {
1206: push (@{$foil_plot[$try]->{$option}},0);
1.39 matthew 1207: } else {
1.88 matthew 1208: if ($response_data{$foilid}->[$try]->{'_total'} ==
1209: $response_data{$foilid}->[$try]->{'_correct'}) {
1210: push(@{$foil_plot[$try]->{$option}},0);
1.75 matthew 1211: } else {
1.88 matthew 1212: push (@{$foil_plot[$try]->{$option}},
1.76 matthew 1213: 100 *
1.88 matthew 1214: $response_data{$foilid}->[$try]->{$option} /
1215: ($response_data{$foilid}->[$try]->{'_total'}
1.76 matthew 1216: -
1.88 matthew 1217: $response_data{$foilid}->[$try]->{'_correct'}
1.76 matthew 1218: ));
1.75 matthew 1219: }
1.39 matthew 1220: }
1.76 matthew 1221: } # End of foreach my $option
1.36 matthew 1222: }
1.76 matthew 1223: } # End of foreach my $foilid
1.88 matthew 1224: } # End of concept loops
1.42 matthew 1225: #
1226: # Build a table for the plots
1.96 matthew 1227: my $analysis_html = "<br /><table>\n";
1.75 matthew 1228: my $optionkey = &build_option_index($ORdata);
1.88 matthew 1229: my $num_concepts = 1;
1230: if (defined($Concepts)) { $num_concepts = scalar(@$Concepts); }
1231: #
1.75 matthew 1232: for (my $try=$mintries;$try<=$maxtries;$try++) {
1.92 matthew 1233: if (! defined($response_data{'_total'}->[$try]) ||
1234: $response_data{'_total'}->[$try] == 0) {
1235: if ($try > 1) {
1236: $analysis_html.= '<tr><td align="center" colspan="4"><b>'.
1237: &mt('None of the selected students attempted the problem more than [_1] times.',$try-1).
1238: '</b></td></tr>';
1239: } else {
1240: $analysis_html.= '<tr><td colspan="4" align="center"><b>'.
1241: &mt('None of the selected students have attempted the problem').'</b></td></tr>';
1242: }
1243: last;
1244: }
1.88 matthew 1245: my $concept_graph='';
1246: if ($num_concepts > 1) {
1247: #
1248: # Create concept plot
1249: my @concept_plot_data;
1250: for (my $j=0;$j<=$#concept_data;$j++) {
1.93 matthew 1251: my $total = $concept_data[$j]->[$try]->{'_total'};
1.88 matthew 1252: if ($total == 0) {
1253: $concept_plot_data[$j] = 0;
1254: } else {
1255: $concept_plot_data[$j] = 100 *
1256: sprintf('%0.3f',
1.93 matthew 1257: $concept_data[$j]->[$try]->{'_correct'} /
1258: $total);
1.88 matthew 1259: }
1260: }
1261: #
1262: $concept_graph = &Apache::loncommon::DrawBarGraph
1.96 matthew 1263: ('Correct Concepts','Concept Number','Percent Correct',
1.105 matthew 1264: 100,$plotcolors,undef,\@concept_plot_data,{xskip=>1});
1.88 matthew 1265: }
1266: #
1267: # Create Foil Plots
1.96 matthew 1268: my $data_count = $response_data{'_total'}->[$try];
1269: my $correct = $response_data{'_correct'}->[$try];
1.42 matthew 1270: my @Datasets;
1.48 matthew 1271: foreach my $option ('_correct',@{$ORdata->{'_Options'}}) {
1.88 matthew 1272: next if (! exists($foil_plot[$try]->{$option}));
1273: push(@Datasets,$foil_plot[$try]->{$option});
1.42 matthew 1274: }
1.76 matthew 1275: #
1276: # Put a blank in the data set between concepts
1277: for (my $set =0;$set<=$#Datasets;$set++) {
1278: my @Data = @{$Datasets[$set]};
1279: my $idx = 0;
1280: foreach my $concept (@{$Concepts}) {
1281: foreach my $foilid (@{$concept->{'foils'}}) {
1282: $Datasets[$set]->[$idx++]=shift(@Data);
1283: }
1284: if ($concept->{'name'} ne $Concepts->[-1]->{'name'}) {
1285: $Datasets[$set]->[$idx++] = 0;
1286: }
1287: }
1288: }
1289: #
1290: # Set up the labels needed for the bar graph
1291: my @Labels;
1292: my $idx = 1;
1293: foreach my $concept (@{$Concepts}) {
1294: foreach my $foilid (@{$concept->{'foils'}}) {
1295: push(@Labels,$idx++);
1296: }
1297: push(@Labels,'');
1298: }
1299: #
1.88 matthew 1300: my $correct_graph = &Apache::loncommon::DrawBarGraph
1.96 matthew 1301: ('Correct Statements','Statement','% Answered Correct',
1.105 matthew 1302: 100,$plotcolors,\@Labels,$Datasets[0],{xskip=>1});
1.75 matthew 1303:
1304: #
1305: #
1.57 matthew 1306: next if (! defined($Datasets[0]));
1.42 matthew 1307: for (my $i=0; $i< scalar(@{$Datasets[0]});$i++) {
1308: $Datasets[0]->[$i]=0;
1309: }
1.96 matthew 1310: my $count = $response_data{'_total'}->[$try] -
1.88 matthew 1311: $response_data{'_correct'}->[$try];
1312: my $incorrect_graph = &Apache::loncommon::DrawBarGraph
1.96 matthew 1313: ('Incorrect Statements','Statement','% Chosen Incorrectly',
1.105 matthew 1314: 100,$plotcolors,\@Labels,@Datasets,{xskip=>1});
1.88 matthew 1315: $analysis_html.=
1.96 matthew 1316: '<tr><td colspan="4" align="center">'.
1317: '<font size="+1">'.
1318: &mt('Attempt [_1], [_2] submissions, [_3] correct, [_4] incorrect',
1319: $try,$data_count,$correct,$data_count-$correct).
1320: '</font>'.'</td></tr>'.$/.
1.88 matthew 1321: '<tr>'.
1322: '<td>'.$concept_graph.'</td>'.
1323: '<td>'.$correct_graph.'</td>'.
1324: '<td>'.$incorrect_graph.'</td>'.
1325: '<td>'.$optionkey.'<td>'.
1326: '</tr>'.$/;
1.42 matthew 1327: }
1328: $analysis_html .= "</table>\n";
1.88 matthew 1329: $table .= $analysis_html;
1330: return $table;
1.25 matthew 1331: }
1332:
1.57 matthew 1333: sub OR_analyze_by_tries {
1.43 matthew 1334: my ($r,$PerformanceData,$mintries,$maxtries) = @_;
1.25 matthew 1335: my %Trydata;
1336: $mintries = 1 if (! defined($mintries) || $mintries < 1);
1337: $maxtries = $mintries if (! defined($maxtries) || $maxtries < $mintries);
1.96 matthew 1338: my @students;
1.26 matthew 1339: foreach my $row (@$PerformanceData) {
1340: next if (! defined($row));
1.47 matthew 1341: my $tries = &get_tries_from_row($row);
1.46 matthew 1342: my %Row = &Process_OR_Row($row);
1.43 matthew 1343: next if (! %Row);
1.96 matthew 1344: my $student_id = $row->[&Apache::loncoursedata::RD_student_id()];
1345: $students[$tries]->{$student_id}++;
1.42 matthew 1346: while (my ($foilid,$href) = each(%Row)) {
1347: if (! ref($href)) {
1348: $Trydata{$foilid}->[$tries] += $href;
1349: next;
1350: }
1351: while (my ($option,$value) = each(%$href)) {
1352: $Trydata{$foilid}->[$tries]->{$option}+=$value;
1.25 matthew 1353: }
1354: }
1355: }
1.96 matthew 1356: for (my $try=$mintries;$try<=$maxtries;$try++) {
1357: $Trydata{'_studentcount'}->[$try] = scalar(keys(%{$students[$try]}));
1358: }
1.25 matthew 1359: return %Trydata;
1360: }
1361:
1.33 matthew 1362: #########################################################
1.46 matthew 1363: #
1364: # Option Response: Time Analysis
1365: #
1.33 matthew 1366: #########################################################
1.57 matthew 1367: sub OR_time_analysis {
1.88 matthew 1368: my ($performance_data,$ORdata) = @_;
1.42 matthew 1369: my ($table,$Foils,$Concepts) = &build_foil_index($ORdata);
1.88 matthew 1370: my $foilkey = &build_option_index($ORdata);
1371: my $num_concepts = 1;
1372: if (defined($Concepts)) { $num_concepts = scalar(@$Concepts); }
1373: #
1374: if ($num_concepts < 2) {
1.42 matthew 1375: $table = '<h3>'.
1376: &mt('Not enough data for concept analysis. '.
1377: 'Performing Foil Analysis').
1.88 matthew 1378: '</h3>'.$table;
1.42 matthew 1379: }
1.88 matthew 1380: #
1.33 matthew 1381: my $num_plots = $ENV{'form.NumPlots'};
1.88 matthew 1382: my $num_data = scalar(@$performance_data)-1;
1.42 matthew 1383: #
1.96 matthew 1384: my $current_index;
1.37 matthew 1385: $table .= "<table>\n";
1.33 matthew 1386: for (my $i=0;$i<$num_plots;$i++) {
1.42 matthew 1387: ##
1.34 matthew 1388: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
1389: ('startdate_'.$i);
1390: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
1391: ('enddate_'.$i);
1392: if (! defined($starttime) || ! defined($endtime)) {
1.42 matthew 1393: my $sec_in_day = 86400;
1.88 matthew 1394: my $last_sub_time = &get_time_from_row($performance_data->[-1]);
1.96 matthew 1395: my ($sday,$smon,$syear) =
1396: (localtime($last_sub_time - $sec_in_day*$i))[3..5];
1.42 matthew 1397: $starttime = &Time::Local::timelocal(0,0,0,$sday,$smon,$syear);
1398: $endtime = $starttime + $sec_in_day;
1399: if ($i == ($num_plots -1 )) {
1.88 matthew 1400: $starttime = &get_time_from_row($performance_data->[0]);
1.42 matthew 1401: }
1402: }
1.96 matthew 1403: $table .= '<tr><td colspan="4" align="center"><font size="+1">'.
1.88 matthew 1404: &mt('Data from [_1] to [_2]',
1405: &Apache::lonlocal::locallocaltime($starttime),
1.96 matthew 1406: &Apache::lonlocal::locallocaltime($endtime)).
1407: '</font></td></tr>'.$/;
1.34 matthew 1408: my $startdateform = &Apache::lonhtmlcommon::date_setter
1409: ('Statistics','startdate_'.$i,$starttime);
1410: my $enddateform = &Apache::lonhtmlcommon::date_setter
1411: ('Statistics','enddate_'.$i,$endtime);
1.42 matthew 1412: #
1413: my $begin_index;
1414: my $end_index;
1415: my $j;
1.88 matthew 1416: while (++$j < scalar(@$performance_data)) {
1417: last if (&get_time_from_row($performance_data->[$j])
1.46 matthew 1418: > $starttime);
1.42 matthew 1419: }
1420: $begin_index = $j;
1.91 matthew 1421: while ($j < scalar(@$performance_data)) {
1422: if (&get_time_from_row($performance_data->[$j]) > $endtime) {
1423: last;
1424: } else {
1425: $j++;
1426: }
1.42 matthew 1427: }
1428: $end_index = $j;
1429: ##
1.96 matthew 1430: my ($processed_time_data,$correct,$data_count,$student_count) =
1431: &OR_time_process_data($performance_data,$begin_index,$end_index);
1432: ##
1433: $table .= '<tr><td colspan="4" align="center"><font size="+1">'.
1.102 matthew 1434: &mt('[_1] submissions from [_2] students, [_3] correct, [_4] incorrect',
1.96 matthew 1435: $data_count,$student_count,$correct,$data_count-$correct).
1436: '</font></td></tr>'.$/;
1.88 matthew 1437: my $concept_correct_plot = '';
1438: if ($num_concepts > 1) {
1439: $concept_correct_plot =
1.96 matthew 1440: &OR_Concept_Time_Analysis($processed_time_data,
1441: $correct,$data_count,$student_count,
1442: $ORdata,$Concepts);
1.42 matthew 1443: }
1.88 matthew 1444: my ($foil_correct_plot,$foil_incorrect_plot) =
1.96 matthew 1445: &OR_Foil_Time_Analysis($processed_time_data,
1446: $correct,$data_count,$student_count,
1447: $ORdata,$Foils,$Concepts);
1.88 matthew 1448: $table .= '<tr>'.
1449: '<td>'.$concept_correct_plot.'</td>'.
1450: '<td>'.$foil_correct_plot.'</td>'.
1451: '<td>'.$foil_incorrect_plot.'</td>'.
1452: '<td align="left" valign="top">'.$foilkey.'</td></tr>'.$/;
1453: $table .= '<tr><td colspan="4" align="center">'.
1.96 matthew 1454: &mt('Start time: [_1]',$startdateform).'<br />'.
1455: &mt('End time: [_1]',$enddateform).'</td></tr>'.$/;
1.88 matthew 1456: $table.= '<tr><td colspan="4"> </td></tr>'.$/;
1.33 matthew 1457: }
1.88 matthew 1458: $table .= '</table>';
1.42 matthew 1459: #
1.33 matthew 1460: return $table;
1461: }
1462:
1.57 matthew 1463: sub OR_Foil_Time_Analysis {
1.96 matthew 1464: my ($processed_time_data,$correct,$data_count,$student_count,
1465: $ORdata,$Foils,$Concepts) = @_;
1466: if ($data_count <= 0) {
1467: return ('<h2>'.&mt('There is no data to plot').'</h2>','');
1468: }
1.42 matthew 1469: my $analysis_html;
1.88 matthew 1470: my @plotdata;
1471: my @labels;
1472: foreach my $concept (@{$Concepts}) {
1473: foreach my $foil (@{$concept->{'foils'}}) {
1474: push(@labels,scalar(@labels)+1);
1.96 matthew 1475: my $total = $processed_time_data->{$foil}->{'_total'};
1.88 matthew 1476: if ($total == 0) {
1477: push(@{$plotdata[0]},0);
1.42 matthew 1478: } else {
1.88 matthew 1479: push(@{$plotdata[0]},
1.96 matthew 1480: 100 * $processed_time_data->{$foil}->{'_correct'} / $total);
1.37 matthew 1481: }
1.96 matthew 1482: my $total_incorrect = $total - $processed_time_data->{$foil}->{'_correct'};
1.88 matthew 1483: for (my $i=0;$i<scalar(@{$ORdata->{'_Options'}});$i++) {
1484: my $option = $ORdata->{'_Options'}->[$i];
1485: if ($total_incorrect == 0) {
1486: push(@{$plotdata[$i+1]},0);
1487: } else {
1488: push(@{$plotdata[$i+1]},
1.96 matthew 1489: 100 * $processed_time_data->{$foil}->{$option} / $total_incorrect);
1.88 matthew 1490: }
1491: }
1492: }
1493: # Put in a blank one
1494: push(@labels,'');
1495: push(@{$plotdata[0]},0);
1496: for (my $i=0;$i<scalar(@{$ORdata->{'_Options'}});$i++) {
1497: push(@{$plotdata[$i+1]},0);
1.39 matthew 1498: }
1.42 matthew 1499: }
1500: #
1501: # Create the plot
1.96 matthew 1502: my $correct_plot = &Apache::loncommon::DrawBarGraph('Correct Statements',
1503: 'Statement Number',
1504: 'Percent Correct',
1505: 100,
1506: $plotcolors,
1507: undef,
1.105 matthew 1508: $plotdata[0],
1509: {xskip=>1});
1.88 matthew 1510: for (my $j=0; $j< scalar(@{$plotdata[0]});$j++) {
1511: $plotdata[0]->[$j]=0;
1.42 matthew 1512: }
1.96 matthew 1513: my $incorrect_plot =
1514: &Apache::loncommon::DrawBarGraph('Incorrect Statements',
1515: 'Statement Number',
1516: 'Incorrect Option Choice',
1517: 100,
1518: $plotcolors,
1519: undef,
1.105 matthew 1520: @plotdata,{xskip=>1});
1.88 matthew 1521: return ($correct_plot,$incorrect_plot);
1.42 matthew 1522: }
1523:
1.57 matthew 1524: sub OR_Concept_Time_Analysis {
1.96 matthew 1525: my ($processed_time_data,$correct,$data_count,$student_count,
1526: $ORdata,$Concepts) = @_;
1527: return '' if ($data_count == 0);
1.33 matthew 1528: #
1.42 matthew 1529: # Put the data in plottable form
1.88 matthew 1530: my @plotdata;
1.42 matthew 1531: foreach my $concept (@$Concepts) {
1532: my ($total,$correct);
1533: foreach my $foil (@{$concept->{'foils'}}) {
1.96 matthew 1534: $total += $processed_time_data->{$foil}->{'_total'};
1535: $correct += $processed_time_data->{$foil}->{'_correct'};
1.42 matthew 1536: }
1537: if ($total == 0) {
1.88 matthew 1538: push(@plotdata,0);
1.42 matthew 1539: } else {
1.88 matthew 1540: push(@plotdata,100 * $correct / $total);
1.42 matthew 1541: }
1542: }
1543: #
1.33 matthew 1544: # Create the plot
1.96 matthew 1545: return &Apache::loncommon::DrawBarGraph('Correct Concepts',
1.88 matthew 1546: 'Concept Number',
1547: 'Percent Correct',
1548: 100,
1549: $plotcolors,
1550: undef,
1.105 matthew 1551: \@plotdata,{xskip=>1});
1.42 matthew 1552: }
1553:
1.96 matthew 1554: sub OR_time_process_data {
1555: my ($performance_data,$begin_index,$end_index)=@_;
1556: my %processed_time_data;
1557: my %distinct_students;
1558: my ($correct,$data_count);
1559: if (($begin_index == $end_index) &&
1560: ($end_index != scalar(@$performance_data)-1)) {
1561: return undef;
1562: }
1563: # Be sure we include the last one if we are asked for it.
1564: # That we have to correct here (and not when $end_index is
1565: # given a value) should probably be considered a bug.
1566: if ($end_index == scalar(@$performance_data)-1) {
1567: $end_index++;
1568: }
1569: my $count;
1570: for (my $i=$begin_index;$i<$end_index;$i++) {
1571: my $attempt = $performance_data->[$i];
1572: $count++;
1573: next if (! defined($attempt));
1574: my %attempt = &Process_OR_Row($attempt);
1575: $data_count++;
1576: $correct += $attempt{'_correct'};
1577: $distinct_students{$attempt->[&Apache::loncoursedata::RD_student_id()]}++;
1578: while (my ($foilid,$href) = each(%attempt)) {
1579: if (! ref($href)) {
1580: $processed_time_data{$foilid} += $href;
1581: next;
1582: }
1583: while (my ($option,$value) = each(%$href)) {
1584: $processed_time_data{$foilid}->{$option}+=$value;
1585: }
1586: }
1587: }
1588: return (\%processed_time_data,$correct,$data_count,
1589: scalar(keys(%distinct_students)));
1590: }
1591:
1.42 matthew 1592: #########################################################
1593: #########################################################
1594: ##
1595: ## Excel output
1596: ##
1597: #########################################################
1598: #########################################################
1.106 matthew 1599: sub build_student_data_worksheet {
1600: my ($workbook,$format) = @_;
1601: my $rows_output = 3;
1602: my $cols_output = 0;
1603: my $worksheet = $workbook->addworksheet('Student Data');
1604: $worksheet->write($rows_output++,0,'Student Data',$format->{'h3'});
1605: my @Headers = ('full name','username','domain','section',
1606: "student\nnumber",'identifier');
1607: $worksheet->write_row($rows_output++,0,\@Headers,$format->{'header'});
1608: my @Students = @Apache::lonstatistics::Students;
1609: my $studentrows = &Apache::loncoursedata::get_student_data(\@Students);
1610: my %ids;
1611: foreach my $row (@$studentrows) {
1612: my ($mysqlid,$student) = @$row;
1613: $ids{$student}=$mysqlid;
1614: }
1615: foreach my $student (@Students) {
1616: my $name_domain = $student->{'username'}.':'.$student->{'domain'};
1617: $worksheet->write_row($rows_output++,0,
1618: [$student->{'fullname'},
1619: $student->{'username'},$student->{'domain'},
1620: $student->{'section'},$student->{'id'},
1621: $ids{$name_domain}]);
1622: }
1623: return $worksheet;
1624: }
1625:
1.57 matthew 1626: sub OR_excel_sheet {
1.88 matthew 1627: my ($r,$resource,$performance_data,$ORdata) = @_;
1.44 matthew 1628: my $response = '';
1.42 matthew 1629: my (undef,$Foils,$Concepts) = &build_foil_index($ORdata);
1.43 matthew 1630: #
1631: # Create excel worksheet
1632: my $filename = '/prtspool/'.
1633: $ENV{'user.name'}.'_'.$ENV{'user.domain'}.'_'.
1634: time.'_'.rand(1000000000).'.xls';
1635: my $workbook = Spreadsheet::WriteExcel->new('/home/httpd'.$filename);
1636: if (! defined($workbook)) {
1637: $r->log_error("Error creating excel spreadsheet $filename: $!");
1638: $r->print('<p>'.&mt("Unable to create new Excel file. ".
1639: "This error has been logged. ".
1640: "Please alert your LON-CAPA administrator").
1641: '</p>');
1642: return undef;
1643: }
1644: #
1645: $workbook->set_tempdir('/home/httpd/perl/tmp');
1.69 matthew 1646: my $format = &Apache::loncommon::define_excel_formats($workbook);
1.43 matthew 1647: #
1648: # Create and populate main worksheets
1649: my $problem_data_sheet = $workbook->addworksheet('Problem Data');
1.69 matthew 1650: my $student_data_sheet = &build_student_data_worksheet($workbook,$format);
1.43 matthew 1651: my $response_data_sheet = $workbook->addworksheet('Response Data');
1652: foreach my $sheet ($problem_data_sheet,$student_data_sheet,
1653: $response_data_sheet) {
1654: $sheet->write(0,0,$resource->{'title'},$format->{'h2'});
1655: $sheet->write(1,0,$resource->{'src'},$format->{'h3'});
1656: }
1657: #
1658: my $result;
1.59 matthew 1659: $result = &OR_build_problem_data_worksheet($problem_data_sheet,$format,
1.43 matthew 1660: $Concepts,$ORdata);
1661: if ($result ne 'okay') {
1662: # Do something useful
1663: }
1.59 matthew 1664: $result = &OR_build_response_data_worksheet($response_data_sheet,$format,
1.88 matthew 1665: $performance_data,$Foils,
1.43 matthew 1666: $ORdata);
1667: if ($result ne 'okay') {
1668: # Do something useful
1669: }
1.44 matthew 1670: $response_data_sheet->activate();
1.43 matthew 1671: #
1672: # Close the excel file
1673: $workbook->close();
1674: #
1675: # Write a link to allow them to download it
1.44 matthew 1676: $result .= '<h2>'.&mt('Excel Raw Data Output').'</h2>'.
1677: '<p><a href="'.$filename.'">'.
1678: &mt('Your Excel spreadsheet.').
1679: '</a></p>'."\n";
1.43 matthew 1680: return $result;
1681: }
1682:
1.57 matthew 1683: sub OR_build_problem_data_worksheet {
1.43 matthew 1684: my ($worksheet,$format,$Concepts,$ORdata) = @_;
1685: my $rows_output = 3;
1686: my $cols_output = 0;
1687: $worksheet->write($rows_output++,0,'Problem Structure',$format->{'h3'});
1688: ##
1689: ##
1690: my @Headers;
1691: if (@$Concepts > 1) {
1692: @Headers = ("Concept\nNumber",'Concept',"Foil\nNumber",
1693: 'Foil Name','Foil Text','Correct value');
1694: } else {
1695: @Headers = ('Foil Number','FoilName','Foil Text','Correct value');
1696: }
1697: $worksheet->write_row($rows_output++,0,\@Headers,$format->{'header'});
1.48 matthew 1698: my %Foildata = %{$ORdata->{'_Foils'}};
1.43 matthew 1699: my $conceptindex = 1;
1700: my $foilindex = 1;
1701: foreach my $concept (@$Concepts) {
1702: my @FoilsInConcept = @{$concept->{'foils'}};
1703: my $firstfoil = shift(@FoilsInConcept);
1704: if (@$Concepts > 1) {
1705: $worksheet->write_row($rows_output++,0,
1706: [$conceptindex,
1707: $concept->{'name'},
1708: $foilindex++,
1709: $Foildata{$firstfoil}->{'name'},
1710: $Foildata{$firstfoil}->{'text'},
1711: $Foildata{$firstfoil}->{'value'},]);
1712: } else {
1713: $worksheet->write_row($rows_output++,0,
1714: [ $foilindex++,
1715: $Foildata{$firstfoil}->{'name'},
1716: $Foildata{$firstfoil}->{'text'},
1717: $Foildata{$firstfoil}->{'value'},]);
1718: }
1719: foreach my $foilid (@FoilsInConcept) {
1720: if (@$Concepts > 1) {
1721: $worksheet->write_row($rows_output++,0,
1722: ['',
1723: '',
1724: $foilindex,
1725: $Foildata{$foilid}->{'name'},
1726: $Foildata{$foilid}->{'text'},
1727: $Foildata{$foilid}->{'value'},]);
1728: } else {
1729: $worksheet->write_row($rows_output++,0,
1730: [$foilindex,
1731: $Foildata{$foilid}->{'name'},
1732: $Foildata{$foilid}->{'text'},
1733: $Foildata{$foilid}->{'value'},]);
1734: }
1735: } continue {
1736: $foilindex++;
1737: }
1738: } continue {
1739: $conceptindex++;
1740: }
1741: $rows_output++;
1742: $rows_output++;
1743: ##
1744: ## Option data output
1745: $worksheet->write($rows_output++,0,'Options',$format->{'header'});
1.48 matthew 1746: foreach my $string (@{$ORdata->{'_Options'}}) {
1.43 matthew 1747: $worksheet->write($rows_output++,0,$string);
1748: }
1749: return 'okay';
1750: }
1751:
1.57 matthew 1752: sub OR_build_response_data_worksheet {
1.88 matthew 1753: my ($worksheet,$format,$performance_data,$Foils,$ORdata)=@_;
1.43 matthew 1754: my $rows_output = 3;
1755: my $cols_output = 0;
1756: $worksheet->write($rows_output++,0,'Response Data',$format->{'h3'});
1757: $worksheet->set_column(1,1,20);
1758: $worksheet->set_column(2,2,13);
1759: my @Headers = ('identifier','time','award detail','attempt');
1760: foreach my $foil (@$Foils) {
1761: push (@Headers,$foil.' submission');
1762: push (@Headers,$foil.' grading');
1763: }
1764: $worksheet->write_row($rows_output++,0,\@Headers,$format->{'header'});
1765: #
1.88 matthew 1766: foreach my $row (@$performance_data) {
1.43 matthew 1767: next if (! defined($row));
1768: my ($student,$award,$grading,$submission,$time,$tries) = @$row;
1769: my @Foilgrades = split('&',$grading);
1770: my @Foilsubs = split('&',$submission);
1.88 matthew 1771: my %response_data;
1.43 matthew 1772: for (my $j=0;$j<=$#Foilgrades;$j++) {
1773: my ($foilid,$correct) = split('=',$Foilgrades[$j]);
1774: my (undef,$submission) = split('=',$Foilsubs[$j]);
1775: $submission = &Apache::lonnet::unescape($submission);
1.108 matthew 1776: $foilid = &Apache::lonnet::unescape($foilid);
1.88 matthew 1777: $response_data{$foilid.' submission'}=$submission;
1778: $response_data{$foilid.' award'}=$correct;
1.43 matthew 1779: }
1780: $worksheet->write($rows_output,$cols_output++,$student);
1781: $worksheet->write($rows_output,$cols_output++,
1.71 matthew 1782: &Apache::lonstathelpers::calc_serial($time),$format->{'date'});
1.43 matthew 1783: $worksheet->write($rows_output,$cols_output++,$award);
1784: $worksheet->write($rows_output,$cols_output++,$tries);
1785: foreach my $foilid (@$Foils) {
1786: $worksheet->write($rows_output,$cols_output++,
1.88 matthew 1787: $response_data{$foilid.' submission'});
1.43 matthew 1788: $worksheet->write($rows_output,$cols_output++,
1.88 matthew 1789: $response_data{$foilid.' award'});
1.43 matthew 1790: }
1791: $rows_output++;
1792: $cols_output = 0;
1793: }
1794: return;
1.42 matthew 1795: }
1796:
1.46 matthew 1797: sub build_foil_index {
1798: my ($ORdata) = @_;
1.48 matthew 1799: return if (! exists($ORdata->{'_Foils'}));
1800: my %Foildata = %{$ORdata->{'_Foils'}};
1.46 matthew 1801: my @Foils = sort(keys(%Foildata));
1802: my %Concepts;
1803: foreach my $foilid (@Foils) {
1.48 matthew 1804: push(@{$Concepts{$Foildata{$foilid}->{'_Concept'}}},
1.46 matthew 1805: $foilid);
1806: }
1807: undef(@Foils);
1808: # Having gathered the concept information in a hash, we now translate it
1809: # into an array because we need to be consistent about order.
1810: # Also put the foils in order, too.
1811: my $sortfunction = sub {
1812: my %Numbers = (one => 1,
1813: two => 2,
1814: three => 3,
1815: four => 4,
1816: five => 5,
1817: six => 6,
1818: seven => 7,
1819: eight => 8,
1820: nine => 9,
1821: ten => 10,);
1822: my $a1 = lc($a);
1823: my $b1 = lc($b);
1.57 matthew 1824: if (exists($Numbers{$a1})) {
1.67 matthew 1825: $a1 = $Numbers{$a1};
1.57 matthew 1826: }
1827: if (exists($Numbers{$b1})) {
1.67 matthew 1828: $b1 = $Numbers{$b1};
1.46 matthew 1829: }
1.67 matthew 1830: if (($a1 =~/^\d+$/) && ($b1 =~/^\d+$/)) {
1831: return $a1 <=> $b1;
1.57 matthew 1832: } else {
1.67 matthew 1833: return $a1 cmp $b1;
1.46 matthew 1834: }
1835: };
1836: my @Concepts;
1837: foreach my $concept (sort $sortfunction (keys(%Concepts))) {
1.57 matthew 1838: if (! defined($Concepts{$concept})) {
1839: $Concepts{$concept}=[];
1840: # next;
1841: }
1.46 matthew 1842: push(@Concepts,{ name => $concept,
1843: foils => [@{$Concepts{$concept}}]});
1844: push(@Foils,(@{$Concepts{$concept}}));
1845: }
1846: #
1847: # Build up the table of row labels.
1848: my $table = '<table border="1" >'."\n";
1849: if (@Concepts > 1) {
1850: $table .= '<tr>'.
1851: '<th>'.&mt('Concept Number').'</th>'.
1852: '<th>'.&mt('Concept').'</th>'.
1853: '<th>'.&mt('Foil Number').'</th>'.
1854: '<th>'.&mt('Foil Name').'</th>'.
1855: '<th>'.&mt('Foil Text').'</th>'.
1856: '<th>'.&mt('Correct Value').'</th>'.
1857: "</tr>\n";
1858: } else {
1859: $table .= '<tr>'.
1860: '<th>'.&mt('Foil Number').'</th>'.
1861: '<th>'.&mt('Foil Name').'</th>'.
1862: '<th>'.&mt('Foil Text').'</th>'.
1863: '<th>'.&mt('Correct Value').'</th>'.
1864: "</tr>\n";
1865: }
1866: my $conceptindex = 1;
1867: my $foilindex = 1;
1868: foreach my $concept (@Concepts) {
1869: my @FoilsInConcept = @{$concept->{'foils'}};
1870: my $firstfoil = shift(@FoilsInConcept);
1871: if (@Concepts > 1) {
1872: $table .= '<tr>'.
1873: '<td>'.$conceptindex.'</td>'.
1.83 albertel 1874: '<td>'.&HTML::Entities::encode($concept->{'name'},'<>&"').'</td>'.
1.46 matthew 1875: '<td>'.$foilindex++.'</td>'.
1.83 albertel 1876: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'name'},'<>&"').'</td>'.
1.65 matthew 1877: '<td>'.$Foildata{$firstfoil}->{'text'}.'</td>'.
1.83 albertel 1878: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'value'},'<>&"').'</td>'.
1.46 matthew 1879: "</tr>\n";
1880: } else {
1881: $table .= '<tr>'.
1882: '<td>'.$foilindex++.'</td>'.
1.83 albertel 1883: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'name'},'<>&"').'</td>'.
1.65 matthew 1884: '<td>'.$Foildata{$firstfoil}->{'text'}.'</td>'.
1.83 albertel 1885: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'value'},'<>&"').'</td>'.
1.46 matthew 1886: "</tr>\n";
1887: }
1888: foreach my $foilid (@FoilsInConcept) {
1889: if (@Concepts > 1) {
1890: $table .= '<tr>'.
1891: '<td></td>'.
1892: '<td></td>'.
1893: '<td>'.$foilindex.'</td>'.
1.83 albertel 1894: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'name'},'<>&"').'</td>'.
1.65 matthew 1895: '<td>'.$Foildata{$foilid}->{'text'}.'</td>'.
1.84 albertel 1896: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'value'},'<>&"').'</td>'.
1.46 matthew 1897: "</tr>\n";
1898: } else {
1899: $table .= '<tr>'.
1900: '<td>'.$foilindex.'</td>'.
1.83 albertel 1901: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'name'},'<>&"').'</td>'.
1.65 matthew 1902: '<td>'.$Foildata{$foilid}->{'text'}.'</td>'.
1.83 albertel 1903: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'value'},'<>&"').'</td>'.
1.46 matthew 1904: "</tr>\n";
1905: }
1906: } continue {
1907: $foilindex++;
1908: }
1909: } continue {
1910: $conceptindex++;
1911: }
1912: $table .= "</table>\n";
1913: #
1914: # Build option index with color stuff
1915: return ($table,\@Foils,\@Concepts);
1916: }
1917:
1918: sub build_option_index {
1919: my ($ORdata)= @_;
1920: my $table = "<table>\n";
1921: my $optionindex = 0;
1922: my @Rows;
1.48 matthew 1923: foreach my $option (&mt('correct option chosen'),@{$ORdata->{'_Options'}}) {
1.95 matthew 1924: my $color = $plotcolors->[$optionindex++];
1.46 matthew 1925: push (@Rows,
1926: '<tr>'.
1.95 matthew 1927: '<td bgcolor="'.$color.'">'.
1928: '<font color="'.$color.'">'.('*'x3).'</font>'.'</td>'.
1.83 albertel 1929: '<td>'.&HTML::Entities::encode($option,'<>&"').'</td>'.
1.46 matthew 1930: "</tr>\n");
1931: }
1932: shift(@Rows); # Throw away 'correct option chosen' color
1933: $table .= join('',reverse(@Rows));
1934: $table .= "</table>\n";
1935: }
1936:
1.94 matthew 1937: sub build_foil_key {
1938: my ($foils,$extra_data)= @_;
1939: if (! defined($extra_data)) { $extra_data = {}; }
1940: my $table = "<table>\n";
1941: my $foil_index = 0;
1942: my @rows;
1943: foreach my $foil (&mt('correct foil chosen'),@{$foils}) {
1.95 matthew 1944: my $color = $plotcolors->[$foil_index++];
1.94 matthew 1945: push (@rows,
1946: '<tr>'.
1.95 matthew 1947: '<td bgcolor="'.$color.'" class="key">'.
1948: '<font color="'.$color.'">'.('*'x4).'</font></td>'.
1.94 matthew 1949: '<td>'.&HTML::Entities::encode($foil,'<>&"').
1950: (' 'x2).$extra_data->{$foil}.'</td>'.
1951: "</tr>\n");
1952: }
1953: shift(@rows); # Throw away 'correct foil chosen' color
1954: $table .= join('',reverse(@rows));
1955: $table .= "</table>\n";
1956: }
1957:
1.33 matthew 1958: #########################################################
1959: #########################################################
1960: ##
1.46 matthew 1961: ## Generic Interface Routines
1.33 matthew 1962: ##
1963: #########################################################
1964: #########################################################
1.23 matthew 1965: sub CreateInterface {
1.28 matthew 1966: ##
1967: ## Environment variable initialization
1.36 matthew 1968: if (! exists$ENV{'form.AnalyzeOver'}) {
1.94 matthew 1969: $ENV{'form.AnalyzeOver'} = 'tries';
1.28 matthew 1970: }
1971: ##
1972: ## Build the menu
1.7 stredwic 1973: my $Str = '';
1.72 matthew 1974: $Str .= &Apache::lonhtmlcommon::breadcrumbs
1.74 matthew 1975: (undef,'Detailed Problem Analysis');
1.23 matthew 1976: $Str .= '<table cellspacing="5">'."\n";
1977: $Str .= '<tr>';
1978: $Str .= '<td align="center"><b>'.&mt('Sections').'</b></td>';
1979: $Str .= '<td align="center"><b>'.&mt('Enrollment Status').'</b></td>';
1.31 matthew 1980: # $Str .= '<td align="center"><b>'.&mt('Sequences and Folders').'</b></td>';
1981: $Str .= '<td align="center"> </td>';
1.23 matthew 1982: $Str .= '</tr>'."\n";
1.31 matthew 1983: ##
1984: ##
1.23 matthew 1985: $Str .= '<tr><td align="center">'."\n";
1986: $Str .= &Apache::lonstatistics::SectionSelect('Section','multiple',5);
1.28 matthew 1987: $Str .= '</td>';
1988: #
1989: $Str .= '<td align="center">';
1.23 matthew 1990: $Str .= &Apache::lonhtmlcommon::StatusOptions(undef,undef,5);
1.28 matthew 1991: $Str .= '</td>';
1992: #
1.31 matthew 1993: # $Str .= '<td align="center">';
1.23 matthew 1994: my $only_seq_with_assessments = sub {
1995: my $s=shift;
1996: if ($s->{'num_assess'} < 1) {
1997: return 0;
1998: } else {
1999: return 1;
2000: }
2001: };
1.31 matthew 2002: &Apache::lonstatistics::MapSelect('Maps','multiple,all',5,
1.23 matthew 2003: $only_seq_with_assessments);
1.36 matthew 2004: ##
2005: ##
1.28 matthew 2006: $Str .= '<td>';
1.91 matthew 2007: ##
2008: my $showprob_checkbox =
2009: '<input type="checkbox" name="show_prob" value="true" ';
2010: if ($ENV{'form.show_prob'} eq 'true') {
2011: $showprob_checkbox .= 'checked ';
2012: }
2013: $showprob_checkbox.= ' />';
2014: $Str.= '<nobr><label>'.
2015: &mt('Show problem [_1]',$showprob_checkbox).
2016: '</label></nobr><br />';
2017: ##
1.90 matthew 2018: my $analyze_selector = '<select name="AnalyzeOver" >';
1.94 matthew 2019: $analyze_selector .= '<option value="tries" ';
1.90 matthew 2020: if (! exists($ENV{'form.AnalyzeOver'}) ||
1.94 matthew 2021: $ENV{'form.AnalyzeOver'} eq 'tries'){
2022: # Default to tries
1.90 matthew 2023: $analyze_selector .= ' selected ';
2024: }
2025: $analyze_selector .= '>'.&mt('Tries').'</option>';
1.94 matthew 2026: $analyze_selector .= '<option value="time" ';
2027: $analyze_selector .= ' selected ' if ($ENV{'form.AnalyzeOver'} eq 'time');
1.90 matthew 2028: $analyze_selector .= '>'.&mt('Time').'</option>';
2029: $analyze_selector .= '</select>';
1.91 matthew 2030: $Str .= '<nobr><label>'.
1.90 matthew 2031: &mt('Analyze Over [_1] [_2]',
2032: $analyze_selector,
2033: &Apache::loncommon::help_open_topic('Analysis_Analyze_Over')).
1.91 matthew 2034: '</label></nobr><br />'.$/;
1.90 matthew 2035: ##
2036: my $numplots_selector = '<select name="NumPlots">';
2037: if (! exists($ENV{'form.NumPlots'})
2038: || $ENV{'form.NumPlots'} < 1
2039: || $ENV{'form.NumPlots'} > 20) {
2040: $ENV{'form.NumPlots'} = 5;
2041: }
2042: foreach my $i (1,2,3,4,5,6,7,8,10,15,20) {
2043: $numplots_selector .= '<option value="'.$i.'" ';
2044: if ($ENV{'form.NumPlots'} == $i) { $numplots_selector.=' selected '; }
2045: $numplots_selector .= '>'.$i.'</option>';
2046: }
2047: $numplots_selector .= '</select></nobr><br />';
2048: $Str .= '<nobr><label>'.&mt('Number of Plots [_1]',$numplots_selector).
2049: '</label></nobr>';
2050: ##
2051: $Str .= '<nobr><label>'.&mt('Status: [_1]',
1.85 matthew 2052: '<input type="text" '.
2053: 'name="stats_status" size="60" value="" />'
2054: ).
1.90 matthew 2055: '</label></nobr>';
1.28 matthew 2056: $Str .= '</td>';
1.36 matthew 2057: ##
2058: ##
1.28 matthew 2059: $Str .= '</tr>'."\n";
1.23 matthew 2060: $Str .= '</table>'."\n";
1.42 matthew 2061: return $Str;
1.54 matthew 2062: }
1.47 matthew 2063:
2064: #########################################################
2065: #########################################################
2066: ##
2067: ## Misc Option Response functions
2068: ##
2069: #########################################################
2070: #########################################################
2071: sub get_time_from_row {
1.42 matthew 2072: my ($row) = @_;
2073: if (ref($row)) {
1.47 matthew 2074: return $row->[&Apache::loncoursedata::RD_timestamp()];
1.42 matthew 2075: }
2076: return undef;
2077: }
2078:
1.47 matthew 2079: sub get_tries_from_row {
1.42 matthew 2080: my ($row) = @_;
2081: if (ref($row)) {
1.47 matthew 2082: return $row->[&Apache::loncoursedata::RD_tries()];
1.42 matthew 2083: }
2084: return undef;
2085: }
2086:
1.48 matthew 2087: sub hashify_attempt {
2088: my ($row) = @_;
2089: my %attempt;
1.94 matthew 2090: $attempt{'student'} = $row->[&Apache::loncoursedata::RD_sname()];
1.48 matthew 2091: $attempt{'tries'} = $row->[&Apache::loncoursedata::RD_tries()];
1.94 matthew 2092: $attempt{'submission'} = &Apache::lonnet::unescape($row->[&Apache::loncoursedata::RD_submission()]);
1.48 matthew 2093: $attempt{'award'} = $row->[&Apache::loncoursedata::RD_awarddetail()];
2094: $attempt{'timestamp'} = $row->[&Apache::loncoursedata::RD_timestamp()];
2095: return %attempt;
2096: }
2097:
1.46 matthew 2098: sub Process_OR_Row {
1.42 matthew 2099: my ($row) = @_;
2100: my %RowData;
1.96 matthew 2101: # my $student_id = $row->[&Apache::loncoursedata::RD_student_id()];
1.47 matthew 2102: my $award = $row->[&Apache::loncoursedata::RD_awarddetail()];
2103: my $grading = $row->[&Apache::loncoursedata::RD_response_eval()];
2104: my $submission = $row->[&Apache::loncoursedata::RD_submission()];
2105: my $time = $row->[&Apache::loncoursedata::RD_timestamp()];
1.96 matthew 2106: # my $tries = $row->[&Apache::loncoursedata::RD_tries()];
1.43 matthew 2107: return undef if ($award eq 'MISSING_ANSWER');
1.97 matthew 2108: if (&submission_is_correct($award)) {
1.42 matthew 2109: $RowData{'_correct'} = 1;
2110: }
2111: $RowData{'_total'} = 1;
2112: my @Foilgrades = split('&',$grading);
2113: my @Foilsubs = split('&',$submission);
2114: for (my $j=0;$j<=$#Foilgrades;$j++) {
2115: my ($foilid,$correct) = split('=',$Foilgrades[$j]);
1.58 matthew 2116: $foilid = &Apache::lonnet::unescape($foilid);
1.42 matthew 2117: my (undef,$submission) = split('=',$Foilsubs[$j]);
2118: if ($correct) {
2119: $RowData{$foilid}->{'_correct'}++;
2120: } else {
2121: $submission = &Apache::lonnet::unescape($submission);
2122: $RowData{$foilid}->{$submission}++;
2123: }
2124: $RowData{$foilid}->{'_total'}++;
2125: }
2126: return %RowData;
1.47 matthew 2127: }
2128:
1.97 matthew 2129: sub submission_is_correct {
2130: my ($award) = @_;
2131: if ($award =~ /(APPROX_ANS|EXACT_ANS)/) {
2132: return 1;
2133: } else {
2134: return 0;
2135: }
2136: }
2137:
1.23 matthew 2138: 1;
1.1 stredwic 2139:
2140: __END__
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