Annotation of loncom/interface/statistics/lonproblemanalysis.pm, revision 1.142.2.5
1.1 stredwic 1: # The LearningOnline Network with CAPA
2: #
1.142.2.5! raeburn 3: # $Id: lonproblemanalysis.pm,v 1.142.2.4 2014/02/27 03:11:14 raeburn 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;
1.120 albertel 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();
1.106 matthew 40: use capa;
1.126 www 41: use lib '/home/httpd/lib/perl/';
42: use LONCAPA;
43:
1.2 stredwic 44:
1.40 matthew 45: my $plotcolors = ['#33ff00',
46: '#0033cc', '#990000', '#aaaa66', '#663399', '#ff9933',
47: '#66ccff', '#ff9999', '#cccc33', '#660000', '#33cc66',
48: ];
1.39 matthew 49:
1.54 matthew 50: my @SubmitButtons = ({ name => 'PrevProblemAnalysis',
51: text => 'Previous Problem' },
52: { name => 'ProblemAnalysis',
1.46 matthew 53: text => 'Analyze Problem Again' },
1.54 matthew 54: { name => 'NextProblemAnalysis',
55: text => 'Next Problem' },
56: { name => 'break'},
1.46 matthew 57: { name => 'SelectAnother',
1.111 matthew 58: text => 'Choose a different Problem' });
1.46 matthew 59:
1.1 stredwic 60: sub BuildProblemAnalysisPage {
1.23 matthew 61: my ($r,$c)=@_;
1.49 matthew 62: #
63: my %Saveable_Parameters = ('Status' => 'scalar',
64: 'Section' => 'array',
1.127 raeburn 65: 'Groups' => 'array',
1.49 matthew 66: 'NumPlots' => 'scalar',
67: 'AnalyzeOver' => 'scalar',
68: );
69: &Apache::loncommon::store_course_settings('problem_analysis',
70: \%Saveable_Parameters);
71: &Apache::loncommon::restore_course_settings('problem_analysis',
72: \%Saveable_Parameters);
73: #
74: &Apache::lonstatistics::PrepareClasslist();
1.48 matthew 75: #
1.140 www 76: $r->print(&Apache::lonhtmlcommon::breadcrumbs('Detailed Problem Analysis'));
77:
1.25 matthew 78: $r->print(&CreateInterface());
1.28 matthew 79: #
80: my @Students = @Apache::lonstatistics::Students;
81: #
1.120 albertel 82: if (@Students < 1 && exists($env{'form.firstrun'})) {
1.132 bisitz 83: $r->print('<div class="LC_warning">'
84: .&mt('There are no students in the sections/groups selected.')
85: .'</div>'
86: );
1.46 matthew 87: }
88: #
1.85 matthew 89: my @CacheButtonHTML =
90: &Apache::lonstathelpers::manage_caches($r,'Statistics','stats_status');
1.39 matthew 91: $r->rflush();
1.46 matthew 92: #
1.142.2.5! raeburn 93: my $problem_types = &analyzable_types();
1.120 albertel 94: if (exists($env{'form.problemchoice'}) &&
95: ! exists($env{'form.SelectAnother'})) {
1.46 matthew 96: foreach my $button (@SubmitButtons) {
1.54 matthew 97: if ($button->{'name'} eq 'break') {
98: $r->print("<br />\n");
99: } else {
100: $r->print('<input type="submit" name="'.$button->{'name'}.'" '.
101: 'value="'.&mt($button->{'text'}).'" />');
102: $r->print(' 'x5);
103: }
1.46 matthew 104: }
1.85 matthew 105: foreach my $html (@CacheButtonHTML) {
106: $r->print($html.(' 'x5));
107: }
1.31 matthew 108: #
1.123 bowersj2 109:
110: # This is commented out pending actual implementation of
111: # CSV and Excel output.
112: #$r->print(&Apache::lonstathelpers::submission_report_form
113: # ('problem_analysis'));
1.115 matthew 114: #
1.25 matthew 115: $r->print('<hr />');
1.54 matthew 116: $r->rflush();
117: #
118: # Determine which problem we are to analyze
1.142.2.5! raeburn 119: my ($navmap,$current_problem) = &get_current_problem(); # need to retrieve $navmap
! 120: # to support $resource->* calls
! 121: # for src and compTitle (below)
1.23 matthew 122: #
1.54 matthew 123: # Store the current problem choice and send it out in the form
1.120 albertel 124: $env{'form.problemchoice'} =
1.61 matthew 125: &Apache::lonstathelpers::make_target_id($current_problem);
1.54 matthew 126: $r->print('<input type="hidden" name="problemchoice" value="'.
1.120 albertel 127: $env{'form.problemchoice'}.'" />');
1.28 matthew 128: #
1.54 matthew 129: if (! defined($current_problem->{'resource'})) {
1.46 matthew 130: $r->print('resource is undefined');
131: } else {
1.54 matthew 132: my $resource = $current_problem->{'resource'};
1.116 matthew 133: $r->print('<h1>'.$resource->compTitle.'</h1>');
134: $r->print('<h3>'.$resource->src.'</h3>');
1.142 golterma 135: $r->print('<p>'.&Apache::lonstatistics::section_and_enrollment_description().'</p>');
1.120 albertel 136: if ($env{'form.show_prob'} eq 'true') {
1.132 bisitz 137: $r->print('<hr />'
138: .&Apache::lonstathelpers::render_resource($resource)
139: .'<hr />'
140: );
1.91 matthew 141: }
1.44 matthew 142: $r->rflush();
1.129 albertel 143: if (@Students) {
144: my %Data = &Apache::lonstathelpers::get_problem_data
145: ($resource->src);
146: my $problem_data = $Data{$current_problem->{'part'}.
147: '.'.
148: $current_problem->{'respid'}};
149: if ($current_problem->{'resptype'} eq 'option') {
150: &OptionResponseAnalysis($r,$current_problem,
151: $problem_data,
152: \@Students);
153: } elsif ($current_problem->{'resptype'} eq 'radiobutton') {
154: &radio_response_analysis($r,$current_problem,
155: $problem_data,
156: \@Students);
157: } elsif ($current_problem->{'resptype'} eq 'numerical') {
158: &numerical_response_analysis($r,$current_problem,
159: $problem_data,\@Students);
160: } else {
1.132 bisitz 161: $r->print('<div class="LC_warning">'
162: .&mt('Analysis of [_1] is not supported.'
163: ,$current_problem->{'resptype'})
164: .'</div>'
165: );
1.129 albertel 166: }
167: }
1.7 stredwic 168: }
1.23 matthew 169: $r->print('<hr />');
1.25 matthew 170: } else {
1.121 matthew 171: my $submit_button = '<input type="submit" '.
172: 'name="ProblemAnalysis" value="'.
173: &mt('Analyze Problem').'" />';
174: $r->print($submit_button);
1.31 matthew 175: $r->print(' 'x5);
1.27 matthew 176: $r->print('<h3>'.&mt('Please select a problem to analyze').'</h3>');
1.121 matthew 177: $r->print(&Apache::lonstathelpers::problem_selector($problem_types,
178: $submit_button));
1.1 stredwic 179: }
180: }
181:
1.142.2.5! raeburn 182: sub analyzable_types {
! 183: return '(option|radiobutton|numerical)';
! 184: }
! 185:
! 186: sub get_current_problem {
! 187: my ($problem_types) = @_;
! 188: my $current_problem = &Apache::lonstathelpers::get_target_from_id
! 189: ($env{'form.problemchoice'});
! 190: my ($navmap,$prev,$curr,$next) =
! 191: &Apache::lonstathelpers::get_prev_curr_next($current_problem,
! 192: $problem_types,
! 193: 'response');
! 194: if (exists($env{'form.PrevProblemAnalysis'}) && ($prev ne '')) {
! 195: $current_problem = $prev;
! 196: } elsif (exists($env{'form.NextProblemAnalysis'}) && ($next ne '')) {
! 197: $current_problem = $next;
! 198: } else {
! 199: $current_problem = $curr;
! 200: }
! 201: return ($navmap,$current_problem);
! 202: }
! 203:
1.69 matthew 204: #########################################################
205: #########################################################
206: ##
1.66 matthew 207: ## Numerical Response Routines
208: ##
209: #########################################################
210: #########################################################
1.103 matthew 211: sub numerical_response_analysis {
212: my ($r,$problem,$problem_analysis,$students) = @_;
1.79 matthew 213: my $c = $r->connection();
1.103 matthew 214: #
1.120 albertel 215: if ($env{'form.AnalyzeOver'} !~ /^(tries|time)$/) {
1.103 matthew 216: $r->print('Bad request');
217: }
218: #
1.82 matthew 219: my ($resource,$partid,$respid) = ($problem->{'resource'},
220: $problem->{'part'},
221: $problem->{'respid'});
1.103 matthew 222: # Gather student data
223: my $response_data = &Apache::loncoursedata::get_response_data
1.118 matthew 224: ([&Apache::lonstatistics::get_selected_sections()],
1.127 raeburn 225: [&Apache::lonstatistics::get_selected_groups()],
1.82 matthew 226: $Apache::lonstatistics::enrollment_status,
1.116 matthew 227: $resource->symb,$respid);
1.103 matthew 228: #
1.104 matthew 229: $problem_analysis->{'answercomputed'} = 1;
230: if ($problem_analysis->{'answercomputed'}) {
231: my $answers =
232: &Apache::lonstathelpers::GetStudentAnswers($r,$problem,$students,
233: 'Statistics',
234: 'stats_status');
235: $r->print(&numerical_one_dimensional_plot($r,600,150,$answers));
236: }
1.106 matthew 237: #
238: if (ref($response_data) ne 'ARRAY') {
1.132 bisitz 239: $r->print('<div class="LC_warning">'
240: .&mt('There is no submission data for this resource.')
241: .'</div>'
242: );
1.106 matthew 243: return;
244: }
1.104 matthew 245: my $analysis_html = '<table>';
1.120 albertel 246: for (my $plot_num = 1;$plot_num<=$env{'form.NumPlots'};$plot_num++) {
1.103 matthew 247: my $restriction_function;
1.104 matthew 248: my $header_message;
249: my $stats_message;
250: my $post_message; # passed through &mt sooner rather than later
251: my $no_data_message;
252: my @extra_data;
1.120 albertel 253: if ($env{'form.AnalyzeOver'} eq 'tries') {
1.104 matthew 254: $restriction_function = sub {($_[0]->{'tries'} == $plot_num?1:0)};
255: $header_message = 'Attempt [_1]';
256: $stats_message =
257: '[_1] submissions, [_2] correct, [_3] incorrect';
258: $post_message = '';
1.132 bisitz 259: $no_data_message = 'No data exists for attempt [_1].';
1.104 matthew 260: } else {
261: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
262: ('startdate_'.$plot_num);
263: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
264: ('enddate_'.$plot_num);
265: ($starttime,$endtime) = &ensure_start_end_times
266: ($starttime,$endtime,
267: &get_time_from_row($response_data->[0]),
268: &get_time_from_row($response_data->[-1]),
269: $plot_num);
270: $header_message = 'Data from [_2] to [_3]';
271: $extra_data[0] = &Apache::lonlocal::locallocaltime($starttime);
272: $extra_data[1] = &Apache::lonlocal::locallocaltime($endtime);
273: #
274: $stats_message =
275: '[_1] submissions from [_4] students, [_2] correct, [_3] incorrect';
276: #
277: $post_message =
278: &mt('Start time: [_1]',
279: &Apache::lonhtmlcommon::date_setter
280: ('Statistics','startdate_'.$plot_num,$starttime)).
281: '<br />'.
282: &mt('End time: [_1]',
283: &Apache::lonhtmlcommon::date_setter
284: ('Statistics','enddate_'.$plot_num,$endtime));
285: $restriction_function =
286: sub {
287: my $t = $_[0]->{'timestamp'};
288: if ($t >= $starttime && $t < $endtime) {
289: return 1;
290: } else {
291: return 0;
292: }
293: };
294: $no_data_message = 'No data for [_2] to [_3]';
295: }
1.103 matthew 296: #
1.106 matthew 297: my ($correct,$answers) =
298: &numerical_determine_answers($r,$resource,$partid,
299: $respid,$students);
1.103 matthew 300: if ($c->aborted()) { return; };
301: #
1.112 matthew 302: my ($responses,$stats) =
303: &numerical_classify_responses($response_data,$correct,
304: $restriction_function);
305: if ($stats->{'submission_count'} == 0) {
1.104 matthew 306: $analysis_html.=
1.132 bisitz 307: '<tr><td colspan="2"><div class="LC_warning">'.
1.104 matthew 308: &mt($no_data_message,$plot_num,@extra_data).
1.132 bisitz 309: '</div></td></tr>';
1.104 matthew 310: } else {
311: $analysis_html.=
312: '<tr><td colspan="2" align="center"><font size="+1"><b>'.
313: &mt($header_message,$plot_num,@extra_data).
314: '</b></font></td></tr>'.
315: '<tr><td colspan="2" align="center">'.
316: &mt($stats_message,
1.112 matthew 317: $stats->{'submission_count'},
318: $stats->{'correct_count'},
319: $stats->{'incorrect_count'},
320: $stats->{'students'},
1.104 matthew 321: @extra_data).
322: '</td></tr>'.
323: '<tr>'.'<td valign="top" align="center">'.
1.112 matthew 324: &numerical_plot_percent($r,$responses,$stats).'</td>'.
1.104 matthew 325: '<td align="center" valign="top">'.
1.112 matthew 326: &numerical_plot_differences($r,$responses,$stats).'</td>'.
1.104 matthew 327: '</tr>';
328: }
329: if ($post_message ne '') {
330: $analysis_html .=
331: '<tr><td colspan="2">'.$post_message.'</td></tr>';
332: }
1.66 matthew 333: }
1.104 matthew 334: $analysis_html.='</table>';
335: $r->print($analysis_html);
1.78 matthew 336: #
1.103 matthew 337: return;
338: }
1.102 matthew 339:
1.103 matthew 340: sub numerical_plot_percent {
1.112 matthew 341: my ($r,$responses,$stats) = @_;
1.103 matthew 342: #
1.112 matthew 343: my $total = $stats->{'submission_count'};
1.103 matthew 344: return '' if ($total == 0);
1.114 matthew 345: my $max_bins = 50;
346: my $lowest_percent = $stats->{'min_percent'};
347: my $highest_percent = $stats->{'max_percent'};
348: my $percent_spread = $highest_percent - $lowest_percent;
349: foreach (qw/20 30 40 50 100 200/) {
350: if ($percent_spread < $_) {
351: $highest_percent =$_/2;
352: last;
353: }
1.113 matthew 354: }
1.129 albertel 355: $percent_spread = $highest_percent - $lowest_percent;
1.114 matthew 356: my $bin_size = 1;
357: foreach (qw/0.01 0.05 0.1 0.5 1 2 5 10 20 25 50 100/) {
358: if ($lowest_percent/2 < $_){
359: $bin_size = $_;
1.129 albertel 360: if ( ($percent_spread/$bin_size) < $max_bins ) {
361: last;
362: }
1.114 matthew 363: }
1.113 matthew 364: }
1.103 matthew 365: my @bins;
1.114 matthew 366: for (my $bin = -$highest_percent;$bin<0;$bin+=$bin_size) {
367: push (@bins,$bin);
368: }
369: for (my $bin = 0; $bin<$highest_percent;$bin+=$bin_size) {
370: push (@bins,$bin);
1.103 matthew 371: }
1.114 matthew 372: push(@bins,$highest_percent);
1.103 matthew 373: #
374: my @correct;
375: my @incorrect;
1.104 matthew 376: my @count;
1.112 matthew 377: while (my ($ans,$submissions) = each(%$responses)) {
1.104 matthew 378: while (my ($submission,$counts) = each(%$submissions)) {
379: my ($correct_count,$incorrect_count) = @$counts;
1.122 albertel 380: my $scaled_value =
381: ($ans) ? 100*($submission-$ans)/abs($ans)
382: : 0;
1.114 matthew 383: if ($scaled_value < $bins[0]) {
384: $bins[0]=$scaled_value -1;
385: }
386: my $bin;
387: for ($bin=0;$bin<$#bins;$bin++) {
1.103 matthew 388: last if ($bins[$bin]>$scaled_value);
389: }
1.114 matthew 390: $correct[$bin-1]+=$correct_count;
391: $incorrect[$bin-1]+=$incorrect_count;
392: $count[$bin-1]+=$correct_count+$incorrect_count;
1.103 matthew 393: }
394: }
395: #
1.114 matthew 396: my @plot_correct = @correct;
397: my @plot_incorrect = @incorrect;
398: my $max;
399: for (my $i=0;$i<$#bins;$i++) {
400: $plot_correct[$i] *= 100/$total;
401: $plot_incorrect[$i] *= 100/$total;
402: if (! defined($max) ||
403: $max < $plot_correct[$i]+$plot_incorrect[$i] ) {
404: $max = $plot_correct[$i]+$plot_incorrect[$i];
1.112 matthew 405: }
406: }
1.114 matthew 407: foreach (qw/1 5 10 15 20 25 30 40 50 75 100/) {
408: if ($max <$_) { $max = $_; last; }
1.103 matthew 409: }
1.112 matthew 410: #
1.142.2.3 raeburn 411: my %lt = &Apache::lonlocal::texthash(
412: 'title' => 'Percent Difference',
413: 'xlabel' => 'Percent Difference from Correct',
414: 'ylabel' => 'Percent of Answers');
1.114 matthew 415: my @labels = (1..scalar(@bins)-1);
1.103 matthew 416: my $graph = &Apache::loncommon::DrawBarGraph
1.142.2.3 raeburn 417: ($lt{'title'},$lt{'xlabel'},$lt{'ylabel'},
1.114 matthew 418: $max,['#33FF00','#FF3300'],\@labels,\@plot_correct,\@plot_incorrect,
1.103 matthew 419: {xskip=>1});
420: #
1.104 matthew 421: my $table = $graph.$/.
422: &numerical_bin_table(\@bins,\@labels,\@incorrect,\@correct,\@count).$/;
1.103 matthew 423: return $table;
424: }
425:
426: sub numerical_plot_differences {
1.112 matthew 427: my ($r,$responses,$stats) = @_;
1.103 matthew 428: #
1.112 matthew 429: my $total = $stats->{'submission_count'};
1.103 matthew 430: return '' if ($total == 0);
1.114 matthew 431: my $max_bins = 21;
1.113 matthew 432: my $min_bin_size = $stats->{'min_abs'};
433: my $low_bin = $stats->{'lowest_ans'}-$stats->{'max_bin_size'};
434: my $high_bin = $stats->{'highest_ans'}+$stats->{'max_bin_size'};
435: if ($high_bin > 0 && $low_bin > -$high_bin) {
436: $low_bin = -$high_bin;
437: } elsif ($low_bin < 0 && $high_bin < -$low_bin) {
438: $high_bin = -$low_bin;
439: }
1.129 albertel 440: if ($high_bin == $low_bin) {
441: $high_bin+=1;
442: $low_bin-=1;
443: }
1.124 bowersj2 444: if (!$min_bin_size ||
445: ($high_bin -$low_bin)/$min_bin_size * 2 > $max_bins) {
1.113 matthew 446: $min_bin_size = abs($high_bin - $low_bin) / $max_bins * 2;
447: }
1.103 matthew 448: my @bins;
1.113 matthew 449: for (my $num = $low_bin;$num <= $high_bin;$num+=($min_bin_size/2)) {
450: push(@bins,$num);
1.103 matthew 451: }
452: #
453: my @correct;
454: my @incorrect;
1.104 matthew 455: my @count;
1.112 matthew 456: while (my ($ans,$submissions) = each(%$responses)) {
1.104 matthew 457: while (my ($submission,$counts) = each(%$submissions)) {
458: my ($correct_count,$incorrect_count) = @$counts;
1.113 matthew 459: my $scaled_value = $submission-$ans;
1.114 matthew 460: if ($scaled_value < $bins[0]) {
461: $bins[0]=$scaled_value-1;
462: }
1.103 matthew 463: my $bin=0;
1.114 matthew 464: for ($bin=0;$bin<$#bins;$bin++) {
1.113 matthew 465: last if ($bins[$bin]>$scaled_value);
1.103 matthew 466: }
1.114 matthew 467: $correct[$bin-1]+=$correct_count;
468: $incorrect[$bin-1]+=$incorrect_count;
469: $count[$bin-1]+=$correct_count+$incorrect_count;
1.103 matthew 470: }
471: }
1.113 matthew 472: my @plot_correct = @correct;
473: my @plot_incorrect = @incorrect;
1.114 matthew 474: my $max;
1.103 matthew 475: for (my $i=0;$i<=$#bins;$i++) {
1.113 matthew 476: $plot_correct[$i] *= 100/$total;
477: $plot_incorrect[$i] *= 100/$total;
1.114 matthew 478: if (! defined($max) ||
479: $max < $plot_correct[$i]+$plot_incorrect[$i] ) {
480: $max = $plot_correct[$i]+$plot_incorrect[$i];
481: }
482: }
483: foreach (qw/1 5 10 15 20 25 30 40 50 75 100/) {
484: if ($max <$_) { $max = $_; last; }
1.103 matthew 485: }
1.113 matthew 486: #
1.142.2.3 raeburn 487: my %lt = &Apache::lonlocal::texthash(
488: 'title' => 'Difference between submission and correct',
489: 'xlabel' => 'Difference from Correct',
490: 'ylabel' => 'Percent of Answers');
1.114 matthew 491: my @labels = (1..scalar(@bins)-1);
1.103 matthew 492: my $graph = &Apache::loncommon::DrawBarGraph
1.142.2.3 raeburn 493: ($lt{'title'},$lt{'xlabel'},$lt{'ylabel'},
1.114 matthew 494: $max,['#33FF00','#FF3300'],\@labels,\@plot_correct,\@plot_incorrect,
1.104 matthew 495: {xskip=>1});
1.103 matthew 496: #
1.104 matthew 497: my $table = $graph.$/.
498: &numerical_bin_table(\@bins,\@labels,\@incorrect,\@correct,\@count).$/;
499: return $table;
500: }
501:
502: sub numerical_classify_responses {
503: my ($full_row_data,$correct,$function) = @_;
504: my %submission_data;
505: my %students;
1.112 matthew 506: my %stats;
1.104 matthew 507: my $max=0;
508: foreach my $row (@$full_row_data) {
509: my %subm = &hashify_attempt($row);
510: if (ref($correct) eq 'HASH') {
1.112 matthew 511: my $s_correct = $correct->{$subm{'student'}};
512: $subm{'correct'} = $s_correct->{'answer'};
513: foreach my $item ('unit','ans_low','ans_high') {
514: $subm{$item} = $s_correct->{$item};
515: }
1.106 matthew 516: } else { # This probably never happens....
517: $subm{'correct'} = $correct->{'answer'};
518: $subm{'unit'} = $correct->{'unit'};
1.104 matthew 519: }
1.112 matthew 520: #
521: my $abs_low =abs($subm{'correct'}-$subm{'ans_low'});
522: my $abs_high=abs($subm{'correct'}-$subm{'ans_high'});
523: if (! defined($stats{'min_abs'}) ||
524: $stats{'min_abs'} > $abs_low) {
525: $stats{'min_abs'} = $abs_low;
526: }
527: if ($stats{'min_abs'} > $abs_high) {
528: $stats{'min_abs'} = $abs_high;
529: }
530: if (! defined($stats{'max_abs'}) ||
531: $stats{'max_abs'} < $abs_low) {
532: $stats{'max_abs'} = $abs_low;
533: }
534: if ($stats{'max_abs'} < $abs_high) {
535: $stats{'max_abs'} = $abs_high;
536: }
1.119 matthew 537: my $low_percent;
538: my $high_percent;
539: if (defined($subm{'correct'}) && $subm{'correct'} != 0) {
540: $low_percent = 100 * abs($abs_low / $subm{'correct'});
541: $high_percent = 100 * abs($abs_high / $subm{'correct'});
542: }
1.112 matthew 543: if (! defined($stats{'min_percent'}) ||
544: $stats{'min_percent'} > $low_percent) {
545: $stats{'min_percent'} = $low_percent;
546: }
547: if ($stats{'min_percent'} > $high_percent) {
548: $stats{'min_percent'} = $high_percent;
549: }
550: if (! defined($stats{'max_percent'}) ||
551: $stats{'max_percent'} < $low_percent) {
552: $stats{'max_percent'} = $low_percent;
553: }
554: if ($stats{'max_percent'} < $high_percent) {
555: $stats{'max_percent'} = $high_percent;
556: }
557: if (! defined($stats{'lowest_ans'}) ||
558: $stats{'lowest_ans'} > $subm{'correct'}) {
559: $stats{'lowest_ans'} = $subm{'correct'};
560: }
561: if (! defined($stats{'highest_ans'}) ||
562: $stats{'highest_ans'} < $subm{'correct'}) {
563: $stats{'highest_ans'} = $subm{'correct'};
564: }
565: #
1.104 matthew 566: $subm{'submission'} =~ s/=\d+\s*$//;
567: if (&$function(\%subm)) {
1.106 matthew 568: my $scaled = '1';
569: my ($sname,$sdom) = split(':',$subm{'student'});
1.109 matthew 570: my ($myunit,$mysub) = ($subm{'unit'},$subm{'submission'});
571: my $result =
572: &capa::caparesponse_get_real_response($myunit,
573: $mysub,
574: \$scaled);
1.114 matthew 575: # &Apache::lonnet::logthis('scaled = '.$scaled.' result ='.$result);
1.109 matthew 576: next if (! defined($scaled));
1.112 matthew 577: # next if ($result ne '6');
1.109 matthew 578: my $submission = $scaled;
1.104 matthew 579: $students{$subm{'student'}}++;
1.112 matthew 580: $stats{'submission_count'}++;
1.104 matthew 581: if (&numerical_submission_is_correct($subm{'award'})) {
1.112 matthew 582: $stats{'correct_count'}++;
1.104 matthew 583: $submission_data{$subm{'correct'}}->{$submission}->[0]++;
584: } elsif (&numerical_submission_is_incorrect($subm{'award'})) {
1.112 matthew 585: $stats{'incorrect_count'}++;
1.104 matthew 586: $submission_data{$subm{'correct'}}->{$submission}->[1]++;
587: }
588: }
589: }
1.119 matthew 590: $stats{'correct_count'} |= 0;
591: $stats{'incorrect_count'} |= 0;
1.112 matthew 592: $stats{'students'}=scalar(keys(%students));
593: return (\%submission_data,\%stats);
1.104 matthew 594: }
595:
596: sub numerical_submission_is_correct {
597: my ($award) = @_;
598: if ($award =~ /^(APPROX_ANS|EXACT_ANS)$/) {
599: return 1;
600: } else {
601: return 0;
602: }
603: }
604:
605: sub numerical_submission_is_incorrect {
606: my ($award) = @_;
607: if ($award =~ /^(INCORRECT)$/) {
608: return 1;
609: } else {
610: return 0;
611: }
612: }
613:
614: sub numerical_bin_table {
615: my ($bins,$labels,$incorrect,$correct,$count)=@_;
616: my $table =
617: '<table><tr><th>'.&mt('Bar').'</th>'.
618: '<th colspan="3">'.&mt('Range').'</th>'.
619: '<th>'.&mt('Incorrect').'</th>'.
620: '<th>'.&mt('Correct').'</th>'.
621: '<th>'.&mt('Count').'</th>'.
622: '</tr>'.$/;
1.113 matthew 623: for (my $i=0;$i<scalar(@{$bins}-1);$i++) {
624: my $lownum = $bins->[$i];
1.114 matthew 625: if ($i == 0) { $lownum = '-∞'; }
1.113 matthew 626: my $highnum = $bins->[$i+1];
1.114 matthew 627: if ($i == scalar(@{$bins})-2) { $highnum = '∞'; }
1.103 matthew 628: $table .=
629: '<tr>'.
1.104 matthew 630: '<td>'.$labels->[$i].'</td>'.
1.103 matthew 631: '<td align="right">'.$lownum.'</td>'.
632: '<td> - </td>'.
1.104 matthew 633: '<td align="right">'.$highnum.'</td>'.
634: '<td align="right">'.$incorrect->[$i].'</td>'.
635: '<td align="right">'.$correct->[$i].'</td>'.
636: '<td align="right">'.$count->[$i].'</td>'.
637: '</tr>'.$/;
1.103 matthew 638: }
1.104 matthew 639: $table.= '</table>';
1.103 matthew 640: return $table;
1.66 matthew 641: }
642:
1.106 matthew 643: sub numerical_determine_answers {
1.103 matthew 644: my ($r,$resource,$partid,$respid,$students)=@_;
645: my $c = $r->connection();
1.78 matthew 646: #
1.141 www 647: my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin($r,scalar(@$students));
1.103 matthew 648: #
649: # Read in the cache (if it exists) before we start timing things.
650: &Apache::lonstathelpers::ensure_proper_cache($resource->{'symb'});
651: #
652: my $correct;
653: my %answers;
654: foreach my $student (@$students) {
655: last if ($c->aborted());
656: my $sname = $student->{'username'};
657: my $sdom = $student->{'domain'};
658: # analyze problem
659: my $analysis =
660: &Apache::lonstathelpers::analyze_problem_as_student($resource,
661: $sname,
662: $sdom);
663: # make the key
664: my $key = $partid.'.'.$respid;
1.130 albertel 665: # pick one of the possible answers
666: my $which = 'INTERNAL';
667: if (!exists($analysis->{$key}{$which})) {
668: $which = (sort(keys(%{ $analysis->{$key} })))[0];
669: }
1.112 matthew 670: foreach my $item ('answer','unit','ans_high','ans_low') {
1.130 albertel 671: if (ref($analysis->{$key.'.'.$item}) eq 'ARRAY') {
672: $correct->{$sname.':'.$sdom}->{$item} =
673: $analysis->{$key.'.'.$item}[0];
674: } else {
675: $correct->{$sname.':'.$sdom}->{$item} =
676: $analysis->{$key.'.'.$item}{$which}[0][0];
677: }
1.112 matthew 678: }
1.130 albertel 679: $answers{$correct->{$sname.':'.$sdom}{'answer'}}++;
1.112 matthew 680: &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
1.139 bisitz 681: 'last student');
1.82 matthew 682: }
1.103 matthew 683: &Apache::lonstathelpers::write_analysis_cache();
1.112 matthew 684: &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
1.106 matthew 685: return ($correct,\%answers);
1.103 matthew 686: }
687:
1.104 matthew 688: #
689: # Inputs: $r, $width, $height, $data
690: # $n = number of students
691: # $data = hashref of $answer => $frequency pairs
1.103 matthew 692: sub numerical_one_dimensional_plot {
1.104 matthew 693: my ($r,$width,$height,$data)=@_;
1.78 matthew 694: #
1.103 matthew 695: # Compute data -> image scaling factors
1.78 matthew 696: my $max_y = 0;
1.103 matthew 697: my $min_x = undef;
698: my $max_x = undef;
1.104 matthew 699: my $n = 0;
1.103 matthew 700: while (my ($answer,$count) = each(%$data)) {
1.104 matthew 701: $n+=$count;
1.103 matthew 702: $max_y = $count if ($max_y < $count);
703: if (! defined($min_x) || $answer < $min_x) {
704: $min_x = $answer;
705: }
706: if (! defined($max_x) || $answer > $max_x) {
707: $max_x = $answer;
708: }
1.78 matthew 709: }
1.103 matthew 710: #
1.106 matthew 711: my $min_max_difference = $max_x - $min_x;
712: if (! defined($min_max_difference) || $min_max_difference == 0) {
713: $min_max_difference = 1;
714: }
715: my $h_scale = ($width-10)/$min_max_difference;
1.103 matthew 716: #
1.78 matthew 717: my $ticscale = 5;
718: if ($max_y * $ticscale > $height/2) {
719: $ticscale = int($height/2/$max_y);
720: $ticscale = 1 if ($ticscale < 1);
721: }
722: #
723: # Create the plot
724: my $plot =
725: qq{<drawimage width="$width" height="$height" bgcolor="transparent" >};
1.103 matthew 726: while (my ($answer,$count) = each(%$data)) {
727: my $xloc = 5+$h_scale*($answer - $min_x);
728: my $top = $height/2-$count*$ticscale;
729: my $bottom = $height/2+$count*$ticscale;
730: $plot .= &line($xloc,$top,$xloc,$bottom,'888888',1);
1.78 matthew 731: }
732: #
733: # Put the scale on last to ensure it is on top of the data.
1.103 matthew 734: if ($min_x < 0 && $max_x > 0) {
735: my $circle_x = 5+$h_scale*abs($min_x); # '0' in data coordinates
1.78 matthew 736: my $r = 4;
737: $plot .= &line(5,$height/2,$circle_x-$r,$height/2,'000000',1);
738: $plot .= &circle($circle_x,$height/2,$r+1,'000000');
739: $plot .= &line($circle_x+$r,$height/2,$width-5,$height/2,'000000',1);
740: } else {
741: $plot .= &line(5,$height/2,$width-5,$height/2,'000000',1);
742: }
743: $plot .= '</drawimage>';
744: my $plotresult = &Apache::lonxml::xmlparse($r,'web',$plot);
745: my $result = '<table>'.
746: '<tr><td colspan="3" align="center">'.
1.103 matthew 747: '<font size="+2">'.&mt('Distribution of correct answers').'</font>'.
748: '<br />'.&mt('[_1] students, [_2] distinct correct answers',
749: $n,scalar(keys(%$data))).
750: '<br />'.&mt('Maximum number of coinciding values: [_1]',$max_y).
1.78 matthew 751: '</td></tr>'.
752: '<tr>'.
1.103 matthew 753: '<td valign="center">'.$min_x.'</td>'.
1.78 matthew 754: '<td>'.$plotresult.'</td>'.
1.103 matthew 755: '<td valign="center">'.$max_x.'</td>'.
1.78 matthew 756: '</tr>'.
757: '</table>';
758: return $result;
759: }
760:
761: ##
762: ## Helper subroutines for <drawimage>.
763: ## These should probably go somewhere more suitable soon.
764: sub line {
765: my ($x1,$y1,$x2,$y2,$color,$thickness) = @_;
1.103 matthew 766: return qq{<line x1="$x1" y1="$y1" x2="$x2" y2="$y2" color="$color" thickness="$thickness" />};
1.78 matthew 767: }
768:
1.82 matthew 769: sub text {
770: my ($x,$y,$color,$text,$font,$direction) = @_;
771: if (! defined($font) || $font !~ /^(tiny|small|medium|large|giant)$/) {
772: $font = 'medium';
773: }
774: if (! defined($direction) || $direction ne 'vertical') {
775: $direction = '';
776: }
777: return qq{<text x="$x" y="$y" color="$color" font="$font" direction="$direction" >$text</text>};
778: }
779:
1.78 matthew 780: sub rectangle {
781: my ($x1,$y1,$x2,$y2,$color,$thickness,$filled) = @_;
782: return qq{<rectangle x1="$x1" y1="$y1" x2="$x2" y2="$y2" color="$color" thickness="$thickness" filled="$filled" />};
783: }
784:
785: sub arc {
786: my ($x,$y,$width,$height,$start,$end,$color,$thickness,$filled)=@_;
787: return qq{<arc x="$x" y="$y" width="$width" height="$height" start="$start" end="$end" color="$color" thickness="$thickness" filled="$filled" />};
788: }
789:
790: sub circle {
791: my ($x,$y,$radius,$color,$thickness,$filled)=@_;
792: return &arc($x,$y,$radius,$radius,0,360,$color,$thickness,$filled);
1.68 matthew 793: }
794:
1.47 matthew 795: #########################################################
796: #########################################################
797: ##
798: ## Radio Response Routines
799: ##
800: #########################################################
801: #########################################################
1.97 matthew 802: sub radio_response_analysis {
1.94 matthew 803: my ($r,$problem,$problem_analysis,$students) = @_;
1.97 matthew 804: #
1.120 albertel 805: if ($env{'form.AnalyzeOver'} !~ /^(tries|time)$/) {
1.94 matthew 806: $r->print('Bad request');
807: }
1.97 matthew 808: #
1.94 matthew 809: my ($resource,$partid,$respid) = ($problem->{'resource'},
810: $problem->{'part'},
811: $problem->{'respid'});
812: #
813: my $analysis_html;
814: my $foildata = $problem_analysis->{'_Foils'};
815: my ($table,$foils,$concepts) = &build_foil_index($problem_analysis);
1.106 matthew 816: if (! defined($concepts)) {
817: $concepts = [];
818: }
1.97 matthew 819: #
1.98 matthew 820: my %true_foils;
1.97 matthew 821: my $num_true = 0;
1.98 matthew 822: if (! $problem_analysis->{'answercomputed'}) {
823: foreach my $foil (@$foils) {
824: if ($foildata->{$foil}->{'value'} eq 'true') {
825: $true_foils{$foil}++;
826: }
1.97 matthew 827: }
1.98 matthew 828: $num_true = scalar(keys(%true_foils));
1.97 matthew 829: }
830: #
1.94 matthew 831: $analysis_html .= $table;
832: # Gather student data
833: my $response_data = &Apache::loncoursedata::get_response_data
1.118 matthew 834: ([&Apache::lonstatistics::get_selected_sections()],
1.127 raeburn 835: [&Apache::lonstatistics::get_selected_groups()],
1.94 matthew 836: $Apache::lonstatistics::enrollment_status,
1.116 matthew 837: $resource->symb,$respid);
1.94 matthew 838: my $correct; # either a hash reference or a scalar
839: if ($problem_analysis->{'answercomputed'} || scalar(@$concepts) > 1) {
840: # This takes a while for large classes...
841: &Apache::lonstathelpers::GetStudentAnswers($r,$problem,$students,
842: 'Statistics',
843: 'stats_status');
844: foreach my $student (@$students) {
845: my ($idx,@remainder) = split('&',$student->{'answer'});
846: my ($answer) = ($remainder[$idx]=~/^(.*)=([^=]*)$/);
847: $correct->{$student->{'username'}.':'.$student->{'domain'}}=
1.126 www 848: &unescape($answer);
1.94 matthew 849: }
850: } else {
851: foreach my $foil (keys(%$foildata)) {
852: if ($foildata->{$foil}->{'value'} eq 'true') {
853: $correct = $foildata->{$foil}->{'name'};
854: }
855: }
856: }
1.97 matthew 857: #
858: if (! defined($response_data) || ref($response_data) ne 'ARRAY' ) {
1.132 bisitz 859: $analysis_html = '<div class="LC_warning">'
860: .&mt('There is no submission data for this resource.')
861: .'</div>';
1.94 matthew 862: $r->print($analysis_html);
863: return;
864: }
865: #
866: $analysis_html.='<table>';
1.120 albertel 867: for (my $plot_num = 1;$plot_num<=$env{'form.NumPlots'};$plot_num++) {
1.94 matthew 868: # classify data ->correct foil -> selected foil
1.97 matthew 869: my ($restriction_function,
870: $correct_foil_title,$incorrect_foil_title,
871: $pre_graph_text,$post_graph_text,
872: $no_data_text,@extra_data);
1.120 albertel 873: if ($env{'form.AnalyzeOver'} eq 'tries') {
1.97 matthew 874: $restriction_function = sub {($_[0]->{'tries'} == $plot_num?1:0)};
1.142.2.3 raeburn 875: $correct_foil_title = &mt('Attempt [_1]',$plot_num);
876: $incorrect_foil_title = &mt('Attempt [_1]',$plot_num);
1.97 matthew 877: $pre_graph_text =
878: 'Attempt [_1], [_2] submissions, [_3] correct, [_4] incorrect';
879: $post_graph_text = '';
880: $no_data_text = 'No data exists for attempt [_1]';
1.120 albertel 881: } elsif ($env{'form.AnalyzeOver'} eq 'time') {
1.97 matthew 882: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
883: ('startdate_'.$plot_num);
884: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
885: ('enddate_'.$plot_num);
886: ($starttime,$endtime) = &ensure_start_end_times
887: ($starttime,$endtime,
888: &get_time_from_row($response_data->[0]),
889: &get_time_from_row($response_data->[-1]),
890: $plot_num);
891: $pre_graph_text =
1.132 bisitz 892: 'Data from [_6] to [_7]'
893: .'<br />'
894: .'[_2] submissions from [_5] students, [_3] correct, [_4] incorrect';
1.97 matthew 895: $extra_data[0] = &Apache::lonlocal::locallocaltime($starttime);
896: $extra_data[1] = &Apache::lonlocal::locallocaltime($endtime);
897: #
898: $post_graph_text =
899: &mt('Start time: [_1]',
900: &Apache::lonhtmlcommon::date_setter
901: ('Statistics','startdate_'.$plot_num,$starttime)).
902: '<br />'.
903: &mt('End time: [_1]',
904: &Apache::lonhtmlcommon::date_setter
905: ('Statistics','enddate_'.$plot_num,$endtime));
906: $restriction_function =
907: sub {
908: my $t = $_[0]->{'timestamp'};
909: if ($t >= $starttime && $t < $endtime) {
910: return 1;
911: } else {
912: return 0;
913: }
914: };
915: $no_data_text = 'No data for [_5] to [_6]';
916: }
917: my $foil_choice_data =
1.103 matthew 918: &classify_response_data($response_data,$correct,
919: $restriction_function);
1.97 matthew 920: # &Apache::lonstathelpers::log_hash_ref($foil_choice_data);
1.94 matthew 921: my $answers;
922: if (ref($correct)) {
923: my %tmp;
924: foreach my $foil (values(%$correct)) {
925: $tmp{$foil}++;
926: }
927: $answers = [keys(%tmp)];
928: } else {
929: $answers = [$correct];
930: }
931: # Concept Plot
932: my $concept_plot = '';
933: if (scalar(@$concepts) > 1) {
1.142.2.3 raeburn 934: my $title = &mt('Correct Concepts');
1.94 matthew 935: $concept_plot = &RR_concept_plot($concepts,$foil_choice_data,
1.142.2.3 raeburn 936: $title);
1.94 matthew 937: }
938: # % Choosing plot
939: my $choice_plot = &RR_create_percent_selected_plot
1.97 matthew 940: ($concepts,$foils,$foil_choice_data,$correct_foil_title);
1.94 matthew 941: # for each correct foil, how did they mark it? (stacked bar graph)
1.97 matthew 942: my ($stacked_plot,$count_by_foil);
943: if ($problem_analysis->{'answercomputed'} || $num_true > 1) {
944: ($stacked_plot,$count_by_foil) =
945: &RR_create_stacked_selection_plot($foils,$foil_choice_data,
1.98 matthew 946: $incorrect_foil_title,
947: \%true_foils);
1.97 matthew 948: }
1.94 matthew 949: #
950: if ($concept_plot ne '' ||
1.97 matthew 951: $choice_plot ne '' ||
1.94 matthew 952: $stacked_plot ne '') {
1.97 matthew 953: my $correct = $foil_choice_data->{'_correct'};
1.119 matthew 954: $correct |= 0;
955: my $incorrect = $foil_choice_data->{'_count'}-$correct;
1.97 matthew 956: $analysis_html.= '<tr><td colspan="4" align="center">'.
957: '<font size="+1">'.
958: &mt($pre_graph_text,
959: $plot_num,$foil_choice_data->{'_count'},
1.102 matthew 960: $correct,
1.119 matthew 961: $incorrect,
1.102 matthew 962: $foil_choice_data->{'_students'},
1.97 matthew 963: @extra_data).
964: '</td></tr>'.$/;
1.94 matthew 965: $analysis_html.=
966: '<tr>'.
967: '<td>'.$concept_plot.'</td>'.
968: '<td>'.$choice_plot.'</td>';
969: if ($stacked_plot ne '') {
970: $analysis_html .=
1.97 matthew 971: '<td>'.$stacked_plot.'</td>'.
972: '<td>'.&build_foil_key($foils,$count_by_foil).'</td>';
1.94 matthew 973: } else {
974: $analysis_html .= ('<td></td>'x2);
975: }
976: $analysis_html.='</tr>'.$/;
1.97 matthew 977: if (defined($post_graph_text)) {
978: $analysis_html.= '<tr><td colspan="4" align="center">'.
979: $post_graph_text.'</td></tr>'.$/;
980: }
981: } elsif ($no_data_text ne '') {
982: $analysis_html.='<tr><td colspan="4" align="center">'.
1.132 bisitz 983: '<div class="LC_warning">'.
1.97 matthew 984: &mt($no_data_text,
985: $plot_num,$foil_choice_data->{'_count'},
986: $correct,
987: $foil_choice_data->{'_count'}-$correct,
1.132 bisitz 988: @extra_data).
989: '</div>';
1.97 matthew 990: if (defined($post_graph_text)) {
991: $analysis_html.='<br />'.$post_graph_text;
992: }
993: $analysis_html.='</td></tr>'.$/;
1.94 matthew 994: }
1.97 matthew 995: } # end of loop for plots
1.94 matthew 996: $analysis_html.='</table>';
997: $r->print($analysis_html);
998: }
999:
1.97 matthew 1000: sub ensure_start_end_times {
1001: my ($start,$end,$first,$last,$plot_num) = @_;
1002: if (! defined($start) || ! defined($end)) {
1003: my $sec_in_day = 86400;
1004: my ($sday,$smon,$syear) =
1005: (localtime($last - $sec_in_day*($plot_num-1)))[3..5];
1006: $start = &Time::Local::timelocal(0,0,0,$sday,$smon,$syear);
1007: $end = $start + $sec_in_day;
1.120 albertel 1008: if ($plot_num == $env{'form.NumPlots'}) {
1.97 matthew 1009: $start = $first;
1010: }
1011: }
1012: return ($start,$end);
1013: }
1.94 matthew 1014:
1015: sub RR_concept_plot {
1016: my ($concepts,$foil_data,$title) = @_;
1017: #
1018: my %correct_by_concept;
1019: my %incorrect_by_concept;
1020: my %true;
1021: foreach my $concept (@$concepts) {
1022: foreach my $foil (@{$concept->{'foils'}}) {
1023: next if (! exists($foil_data->{$foil}));
1024: foreach my $choice (keys(%{$foil_data->{$foil}})) {
1025: if ($choice eq $foil) {
1026: $correct_by_concept{$concept->{'name'}} +=
1027: $foil_data->{$foil}->{$choice};
1028: } else {
1029: $incorrect_by_concept{$concept->{'name'}} +=
1030: $foil_data->{$foil}->{$choice};
1031: }
1032: }
1033: }
1034: }
1035: #
1036: # need arrays for incorrect and correct because we want to use different
1037: # colors for them
1038: my @correct;
1039: #
1040: my $total =0;
1041: for (my $i=0;$i<scalar(@$concepts);$i++) {
1042: my $concept = $concepts->[$i];
1043: $correct[$i] = $correct_by_concept{$concept->{'name'}};
1044: $total += $correct_by_concept{$concept->{'name'}}+
1045: $incorrect_by_concept{$concept->{'name'}};
1046: }
1047: if ($total == 0) { return ''; };
1048: for (my $i=0;$i<=$#correct;$i++) {
1049: $correct[$i] = sprintf('%0f',$correct[$i]/$total*100);
1050: }
1.142.2.3 raeburn 1051: my $xlabel = &mt('concept');
1052: my $ylabel = &mt('Percent Choosing');
1.94 matthew 1053: my $plot= &Apache::loncommon::DrawBarGraph($title,
1054: $xlabel,
1.142.2.3 raeburn 1055: $ylabel,
1.94 matthew 1056: 100,
1057: ['#33ff00','#ff3300'],
1058: undef,
1059: \@correct);
1060: return $plot;
1061: }
1062:
1063: sub RR_create_percent_selected_plot {
1.97 matthew 1064: my ($concepts,$foils,$foil_data,$title) = @_;
1.94 matthew 1065: #
1.99 matthew 1066: if ($foil_data->{'_count'} == 0) { return ''; };
1067: my %correct_selections;
1068: my %incorrect_selections;
1.94 matthew 1069: foreach my $foil (@$foils) {
1.101 matthew 1070: # foil_data has format $foil_data->{true_foil}->{selected foil}=count
1.94 matthew 1071: next if (! exists($foil_data->{$foil}));
1072: while (my ($f,$count)= each(%{$foil_data->{$foil}})) {
1.99 matthew 1073: if ($f eq $foil) {
1074: $correct_selections{$foil} += $count;
1075: } else {
1.101 matthew 1076: $incorrect_selections{$f} += $count;
1.99 matthew 1077: }
1.94 matthew 1078: }
1079: }
1080: #
1081: # need arrays for incorrect and correct because we want to use different
1082: # colors for them
1083: my @correct;
1084: my @incorrect;
1085: #
1.99 matthew 1086: my $total = $foil_data->{'_count'};
1.94 matthew 1087: for (my $i=0;$i<scalar(@$foils);$i++) {
1088: my $foil = $foils->[$i];
1.99 matthew 1089: $correct[$i] = $correct_selections{$foil};
1090: $incorrect[$i] = $incorrect_selections{$foil};
1.94 matthew 1091: }
1092: for (my $i=0;$i<=$#correct;$i++) {
1.99 matthew 1093: $correct[$i] = sprintf('%2f',$correct[$i]/$total*100);
1.94 matthew 1094: }
1095: for (my $i=0;$i<=$#incorrect;$i++) {
1.99 matthew 1096: $incorrect[$i] = sprintf('%2f',$incorrect[$i]/$total*100);
1.94 matthew 1097: }
1.97 matthew 1098: #
1099: # Put a blank in the data sets between concepts, if there are concepts
1100: my @labels;
1101: if (defined($concepts) && scalar(@$concepts) > 1) {
1102: my @new_correct;
1103: my @new_incorrect;
1104: my $foil_count = 0;
1105: foreach my $concept (@$concepts) {
1106: foreach (@{$concept->{'foils'}}) {
1107: push(@new_correct, $correct[$foil_count]);
1108: push(@new_incorrect,$incorrect[$foil_count]);
1109: push(@labels,++$foil_count);
1110: }
1111: push(@new_correct,'');
1112: push(@new_incorrect,'');
1113: push(@labels,'');
1114: }
1115: @correct = @new_correct;
1116: @incorrect = @new_incorrect;
1117: } else {
1118: @labels = (1 .. scalar(@correct));
1119: }
1120: #
1.142.2.3 raeburn 1121: my $xlabel = &mt('foil chosen');
1122: my $ylabel = &mt('Percent Choosing');
1.94 matthew 1123: my $plot= &Apache::loncommon::DrawBarGraph($title,
1124: $xlabel,
1.142.2.3 raeburn 1125: $ylabel,
1.94 matthew 1126: 100,
1127: ['#33ff00','#ff3300'],
1.97 matthew 1128: \@labels,
1.94 matthew 1129: \@correct,
1130: \@incorrect);
1131: return $plot;
1132: }
1133:
1134: sub RR_create_stacked_selection_plot {
1.98 matthew 1135: my ($foils,$foil_data,$title,$true_foils)=@_;
1.94 matthew 1136: #
1.97 matthew 1137: my @dataset; # array of array refs - multicolor rows $datasets[row]->[col]
1.94 matthew 1138: my @labels;
1.97 matthew 1139: my $count;
1140: my %column; # maps foil name to column in @datasets
1.94 matthew 1141: for (my $i=0;$i<scalar(@$foils);$i++) {
1.98 matthew 1142: my $foil = $foils->[$i];
1143: if (defined($true_foils) && scalar(keys(%$true_foils)) > 0 ) {
1144: next if (! $true_foils->{$foil} );
1145: push(@labels,$i+1);
1146: } else {
1147: next if (! exists($foil_data->{$foil}));
1148: push(@labels,$i+1);
1149: }
1.94 matthew 1150: next if (! exists($foil_data->{$foils->[$i]}));
1.98 matthew 1151: $column{$foil}= $count++;
1.94 matthew 1152: for (my $j=0;$j<scalar(@$foils);$j++) {
1153: my $value = 0;
1154: if ($i != $j ) {
1.98 matthew 1155: $value += $foil_data->{$foil}->{$foils->[$j]};
1.94 matthew 1156: }
1.98 matthew 1157: $dataset[$j]->[$column{$foil}]=$value;
1.94 matthew 1158: }
1159: }
1160: #
1161: return '' if (! scalar(keys(%column)));
1162: #
1163: my $grand_total = 0;
1164: my %count_per_foil;
1165: while (my ($foil,$bar) = each (%column)) {
1166: my $bar_total = 0;
1167: for (my $j=0;$j<scalar(@dataset);$j++) {
1168: $bar_total += $dataset[$j]->[$bar];
1169: }
1170: next if ($bar_total == 0);
1171: for (my $j=0;$j<scalar(@dataset);$j++) {
1172: $dataset[$j]->[$bar] =
1173: sprintf('%2f',$dataset[$j]->[$bar]/$bar_total * 100);
1174: }
1.97 matthew 1175: $count_per_foil{$foil}=' ( '.$bar_total.' )';
1.94 matthew 1176: $grand_total += $bar_total;
1177: }
1178: if ($grand_total == 0) {
1179: return ('',undef);
1180: }
1181: my @empty_row = ();
1182: foreach (@{$dataset[0]}) {
1183: push(@empty_row,0);
1184: }
1185: #
1.142.2.3 raeburn 1186: my $xlabel = &mt('Correct Foil');
1187: my $ylabel = &mt('foils chosen Incorrectly');
1.94 matthew 1188: my $graph = &Apache::loncommon::DrawBarGraph
1.142.2.3 raeburn 1189: ($title,$xlabel,$ylabel,
1.94 matthew 1190: 100,$plotcolors,\@labels,\@empty_row,@dataset);
1191: return ($graph,\%count_per_foil);
1192: }
1193:
1.103 matthew 1194:
1195: #########################################################
1196: #########################################################
1197: ##
1198: ## Misc routines
1199: ##
1200: #########################################################
1201: #########################################################
1202:
1.94 matthew 1203: # if $correct is a hash ref, it is assumed to be indexed by student names.
1204: # the values are assumed to be hash refs with a key of 'answer'.
1.103 matthew 1205: sub classify_response_data {
1.94 matthew 1206: my ($full_row_data,$correct,$function) = @_;
1207: my %submission_data;
1.102 matthew 1208: my %students;
1.103 matthew 1209: my $max=0;
1.94 matthew 1210: foreach my $row (@$full_row_data) {
1211: my %subm = &hashify_attempt($row);
1212: if (ref($correct) eq 'HASH') {
1213: $subm{'correct'} = $correct->{$subm{'student'}};
1214: } else {
1215: $subm{'correct'} = $correct;
1216: }
1217: $subm{'submission'} =~ s/=\d+\s*$//;
1218: if (&$function(\%subm)) {
1.102 matthew 1219: $students{$subm{'student'}}++;
1.97 matthew 1220: $submission_data{'_count'}++;
1221: if (&submission_is_correct($subm{'award'})) {
1222: $submission_data{'_correct'}++;
1223: }
1.103 matthew 1224:
1225: if($max<++$submission_data{$subm{'correct'}}->{$subm{'submission'}}) {
1226: $max=$submission_data{$subm{'correct'}}->{$subm{'submission'}};
1227: }
1.94 matthew 1228: }
1229: }
1.103 matthew 1230: $submission_data{'_max'} = $max;
1.102 matthew 1231: $submission_data{'_students'}=scalar(keys(%students));
1.94 matthew 1232: return \%submission_data;
1233: }
1234:
1235:
1.33 matthew 1236: #########################################################
1237: #########################################################
1238: ##
1.46 matthew 1239: ## Option Response Routines
1.33 matthew 1240: ##
1241: #########################################################
1242: #########################################################
1.46 matthew 1243: sub OptionResponseAnalysis {
1.88 matthew 1244: my ($r,$problem,$problem_data,$Students) = @_;
1.56 matthew 1245: my ($resource,$respid) = ($problem->{'resource'},
1246: $problem->{'respid'});
1247: # Note: part data is not needed.
1.82 matthew 1248: my $PerformanceData = &Apache::loncoursedata::get_response_data
1.118 matthew 1249: ([&Apache::lonstatistics::get_selected_sections()],
1.127 raeburn 1250: [&Apache::lonstatistics::get_selected_groups()],
1.82 matthew 1251: $Apache::lonstatistics::enrollment_status,
1.116 matthew 1252: $resource->symb,$respid);
1.46 matthew 1253: if (! defined($PerformanceData) ||
1254: ref($PerformanceData) ne 'ARRAY' ) {
1.132 bisitz 1255: $r->print('<div class="LC_warning">'
1256: .&mt('There is no student data for this problem.')
1257: .'</div>'
1258: );
1.46 matthew 1259: } else {
1260: $r->rflush();
1.120 albertel 1261: if ($env{'form.AnalyzeOver'} eq 'tries') {
1.111 matthew 1262: my $analysis_html = &OR_tries_analysis($r,
1263: $PerformanceData,
1264: $problem_data);
1265: $r->print($analysis_html);
1266: $r->rflush();
1.120 albertel 1267: } elsif ($env{'form.AnalyzeOver'} eq 'time') {
1.111 matthew 1268: my $analysis_html = &OR_time_analysis($PerformanceData,
1269: $problem_data);
1270: $r->print($analysis_html);
1.46 matthew 1271: $r->rflush();
1.39 matthew 1272: } else {
1.142.2.4 raeburn 1273: $r->print('<div class="LC_warning"'
1.132 bisitz 1274: .&mt('The analysis you have selected is not supported at this time.')
1275: .'</div>'
1276: );
1.36 matthew 1277: }
1.39 matthew 1278: }
1279: }
1280:
1.33 matthew 1281: #########################################################
1.46 matthew 1282: #
1.94 matthew 1283: # Option Response: tries Analysis
1.46 matthew 1284: #
1.33 matthew 1285: #########################################################
1.57 matthew 1286: sub OR_tries_analysis {
1.43 matthew 1287: my ($r,$PerformanceData,$ORdata) = @_;
1.33 matthew 1288: my $mintries = 1;
1.120 albertel 1289: my $maxtries = $env{'form.NumPlots'};
1.39 matthew 1290: my ($table,$Foils,$Concepts) = &build_foil_index($ORdata);
1.107 matthew 1291: if (! defined($Concepts)) {
1292: $Concepts = [];
1293: }
1.88 matthew 1294: my %response_data = &OR_analyze_by_tries($r,$PerformanceData,
1.36 matthew 1295: $mintries,$maxtries);
1.42 matthew 1296: my $analysis = '';
1.31 matthew 1297: #
1.88 matthew 1298: # Compute the data necessary to make the plots
1299: my @foil_plot;
1300: my @concept_data;
1301: for (my $j=0;$j<=scalar(@$Concepts);$j++) {
1302: my $concept = $Concepts->[$j];
1.75 matthew 1303: foreach my $foilid (@{$concept->{'foils'}}) {
1.76 matthew 1304: for (my $try=$mintries;$try<=$maxtries;$try++) {
1.88 matthew 1305: # concept analysis data
1.93 matthew 1306: $concept_data[$j]->[$try]->{'_correct'} +=
1.88 matthew 1307: $response_data{$foilid}->[$try]->{'_correct'};
1.93 matthew 1308: $concept_data[$j]->[$try]->{'_total'} +=
1.88 matthew 1309: $response_data{$foilid}->[$try]->{'_total'};
1310: #
1311: # foil analysis data
1312: if ($response_data{$foilid}->[$try]->{'_total'} == 0) {
1313: push(@{$foil_plot[$try]->{'_correct'}},0);
1.42 matthew 1314: } else {
1.88 matthew 1315: push(@{$foil_plot[$try]->{'_correct'}},
1316: 100*$response_data{$foilid}->[$try]->{'_correct'}/
1317: $response_data{$foilid}->[$try]->{'_total'});
1.75 matthew 1318: }
1319: foreach my $option (@{$ORdata->{'_Options'}}) {
1.88 matthew 1320: push(@{$foil_plot[$try]->{'_total'}},
1321: $response_data{$foilid}->[$try]->{'_total'});
1322: if ($response_data{$foilid}->[$try]->{'_total'} == 0) {
1323: push (@{$foil_plot[$try]->{$option}},0);
1.39 matthew 1324: } else {
1.88 matthew 1325: if ($response_data{$foilid}->[$try]->{'_total'} ==
1326: $response_data{$foilid}->[$try]->{'_correct'}) {
1327: push(@{$foil_plot[$try]->{$option}},0);
1.75 matthew 1328: } else {
1.88 matthew 1329: push (@{$foil_plot[$try]->{$option}},
1.76 matthew 1330: 100 *
1.88 matthew 1331: $response_data{$foilid}->[$try]->{$option} /
1332: ($response_data{$foilid}->[$try]->{'_total'}
1.76 matthew 1333: -
1.88 matthew 1334: $response_data{$foilid}->[$try]->{'_correct'}
1.76 matthew 1335: ));
1.75 matthew 1336: }
1.39 matthew 1337: }
1.76 matthew 1338: } # End of foreach my $option
1.36 matthew 1339: }
1.76 matthew 1340: } # End of foreach my $foilid
1.88 matthew 1341: } # End of concept loops
1.42 matthew 1342: #
1343: # Build a table for the plots
1.96 matthew 1344: my $analysis_html = "<br /><table>\n";
1.75 matthew 1345: my $optionkey = &build_option_index($ORdata);
1.88 matthew 1346: my $num_concepts = 1;
1347: if (defined($Concepts)) { $num_concepts = scalar(@$Concepts); }
1348: #
1.75 matthew 1349: for (my $try=$mintries;$try<=$maxtries;$try++) {
1.92 matthew 1350: if (! defined($response_data{'_total'}->[$try]) ||
1351: $response_data{'_total'}->[$try] == 0) {
1352: if ($try > 1) {
1.132 bisitz 1353: $analysis_html.= '<tr><td colspan="4">'
1354: .'<div class="LC_info">'
1.136 hauer 1355: .&mt('None of the selected students attempted the problem more than [quant,_1,time].'
1.132 bisitz 1356: ,$try-1)
1357: .'</div>'
1358: .'</td></tr>';
1.92 matthew 1359: } else {
1.132 bisitz 1360: $analysis_html.= '<tr><td colspan="4">'
1361: .'<div class="LC_info">'
1362: .&mt('None of the selected students have attempted the problem.')
1363: .'</div>'
1364: .'</td></tr>';
1.92 matthew 1365: }
1366: last;
1367: }
1.88 matthew 1368: my $concept_graph='';
1369: if ($num_concepts > 1) {
1370: #
1371: # Create concept plot
1372: my @concept_plot_data;
1373: for (my $j=0;$j<=$#concept_data;$j++) {
1.93 matthew 1374: my $total = $concept_data[$j]->[$try]->{'_total'};
1.88 matthew 1375: if ($total == 0) {
1376: $concept_plot_data[$j] = 0;
1377: } else {
1378: $concept_plot_data[$j] = 100 *
1379: sprintf('%0.3f',
1.93 matthew 1380: $concept_data[$j]->[$try]->{'_correct'} /
1381: $total);
1.88 matthew 1382: }
1383: }
1384: #
1.142.2.3 raeburn 1385: my %lt = &Apache::lonlocal::texthash(
1386: 'title' => 'Correct Concepts',
1387: 'xlabel' => 'Concept Number',
1388: 'ylabel' => 'Percent Correct');
1.88 matthew 1389: $concept_graph = &Apache::loncommon::DrawBarGraph
1.142.2.3 raeburn 1390: ($lt{'title'},$lt{'xlabel'},$lt{'ylabel'},
1.105 matthew 1391: 100,$plotcolors,undef,\@concept_plot_data,{xskip=>1});
1.88 matthew 1392: }
1393: #
1394: # Create Foil Plots
1.96 matthew 1395: my $data_count = $response_data{'_total'}->[$try];
1396: my $correct = $response_data{'_correct'}->[$try];
1.119 matthew 1397: $correct |= 0;
1.42 matthew 1398: my @Datasets;
1.48 matthew 1399: foreach my $option ('_correct',@{$ORdata->{'_Options'}}) {
1.88 matthew 1400: next if (! exists($foil_plot[$try]->{$option}));
1401: push(@Datasets,$foil_plot[$try]->{$option});
1.42 matthew 1402: }
1.76 matthew 1403: #
1404: # Put a blank in the data set between concepts
1405: for (my $set =0;$set<=$#Datasets;$set++) {
1406: my @Data = @{$Datasets[$set]};
1407: my $idx = 0;
1408: foreach my $concept (@{$Concepts}) {
1409: foreach my $foilid (@{$concept->{'foils'}}) {
1410: $Datasets[$set]->[$idx++]=shift(@Data);
1411: }
1412: if ($concept->{'name'} ne $Concepts->[-1]->{'name'}) {
1413: $Datasets[$set]->[$idx++] = 0;
1414: }
1415: }
1416: }
1417: #
1418: # Set up the labels needed for the bar graph
1419: my @Labels;
1420: my $idx = 1;
1421: foreach my $concept (@{$Concepts}) {
1422: foreach my $foilid (@{$concept->{'foils'}}) {
1423: push(@Labels,$idx++);
1424: }
1425: push(@Labels,'');
1426: }
1427: #
1.142.2.3 raeburn 1428: my %lt = &Apache::lonlocal::texthash(
1429: 'title' => 'Correct Statements',
1430: 'xlabel' => 'Statement',
1431: 'ylabel' => '% Answered Correct');
1.88 matthew 1432: my $correct_graph = &Apache::loncommon::DrawBarGraph
1.142.2.3 raeburn 1433: ($lt{'title'},$lt{'xlabel'},$lt{'ylabel'},
1.105 matthew 1434: 100,$plotcolors,\@Labels,$Datasets[0],{xskip=>1});
1.75 matthew 1435:
1436: #
1437: #
1.57 matthew 1438: next if (! defined($Datasets[0]));
1.42 matthew 1439: for (my $i=0; $i< scalar(@{$Datasets[0]});$i++) {
1440: $Datasets[0]->[$i]=0;
1441: }
1.96 matthew 1442: my $count = $response_data{'_total'}->[$try] -
1.88 matthew 1443: $response_data{'_correct'}->[$try];
1.142.2.3 raeburn 1444: %lt = &Apache::lonlocal::texthash(
1445: 'title' => 'Incorrect Statements',
1446: 'xlabel' => 'Statement',
1447: 'ylabel' => '% Chosen Incorrectly');
1.88 matthew 1448: my $incorrect_graph = &Apache::loncommon::DrawBarGraph
1.142.2.3 raeburn 1449: ($lt{'title'},$lt{'xlabel'},$lt{'ylabel'},
1.105 matthew 1450: 100,$plotcolors,\@Labels,@Datasets,{xskip=>1});
1.88 matthew 1451: $analysis_html.=
1.96 matthew 1452: '<tr><td colspan="4" align="center">'.
1453: '<font size="+1">'.
1454: &mt('Attempt [_1], [_2] submissions, [_3] correct, [_4] incorrect',
1455: $try,$data_count,$correct,$data_count-$correct).
1456: '</font>'.'</td></tr>'.$/.
1.88 matthew 1457: '<tr>'.
1458: '<td>'.$concept_graph.'</td>'.
1459: '<td>'.$correct_graph.'</td>'.
1460: '<td>'.$incorrect_graph.'</td>'.
1461: '<td>'.$optionkey.'<td>'.
1462: '</tr>'.$/;
1.42 matthew 1463: }
1464: $analysis_html .= "</table>\n";
1.88 matthew 1465: $table .= $analysis_html;
1466: return $table;
1.25 matthew 1467: }
1468:
1.57 matthew 1469: sub OR_analyze_by_tries {
1.43 matthew 1470: my ($r,$PerformanceData,$mintries,$maxtries) = @_;
1.25 matthew 1471: my %Trydata;
1472: $mintries = 1 if (! defined($mintries) || $mintries < 1);
1473: $maxtries = $mintries if (! defined($maxtries) || $maxtries < $mintries);
1.96 matthew 1474: my @students;
1.26 matthew 1475: foreach my $row (@$PerformanceData) {
1476: next if (! defined($row));
1.47 matthew 1477: my $tries = &get_tries_from_row($row);
1.46 matthew 1478: my %Row = &Process_OR_Row($row);
1.43 matthew 1479: next if (! %Row);
1.96 matthew 1480: my $student_id = $row->[&Apache::loncoursedata::RD_student_id()];
1481: $students[$tries]->{$student_id}++;
1.42 matthew 1482: while (my ($foilid,$href) = each(%Row)) {
1483: if (! ref($href)) {
1484: $Trydata{$foilid}->[$tries] += $href;
1485: next;
1486: }
1487: while (my ($option,$value) = each(%$href)) {
1488: $Trydata{$foilid}->[$tries]->{$option}+=$value;
1.25 matthew 1489: }
1490: }
1491: }
1.96 matthew 1492: for (my $try=$mintries;$try<=$maxtries;$try++) {
1493: $Trydata{'_studentcount'}->[$try] = scalar(keys(%{$students[$try]}));
1494: }
1.25 matthew 1495: return %Trydata;
1496: }
1497:
1.33 matthew 1498: #########################################################
1.46 matthew 1499: #
1500: # Option Response: Time Analysis
1501: #
1.33 matthew 1502: #########################################################
1.57 matthew 1503: sub OR_time_analysis {
1.88 matthew 1504: my ($performance_data,$ORdata) = @_;
1.42 matthew 1505: my ($table,$Foils,$Concepts) = &build_foil_index($ORdata);
1.88 matthew 1506: my $foilkey = &build_option_index($ORdata);
1507: my $num_concepts = 1;
1508: if (defined($Concepts)) { $num_concepts = scalar(@$Concepts); }
1509: #
1510: if ($num_concepts < 2) {
1.142.2.3 raeburn 1511: $table = '<p class="LC_info">'.
1512: &mt('Not enough data for concept analysis.'.
1513: ' Performing Foil Analysis instead.').
1514: '</p>'.
1515: $table;
1.42 matthew 1516: }
1.88 matthew 1517: #
1.120 albertel 1518: my $num_plots = $env{'form.NumPlots'};
1.88 matthew 1519: my $num_data = scalar(@$performance_data)-1;
1.42 matthew 1520: #
1.96 matthew 1521: my $current_index;
1.37 matthew 1522: $table .= "<table>\n";
1.33 matthew 1523: for (my $i=0;$i<$num_plots;$i++) {
1.42 matthew 1524: ##
1.34 matthew 1525: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
1526: ('startdate_'.$i);
1527: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
1528: ('enddate_'.$i);
1529: if (! defined($starttime) || ! defined($endtime)) {
1.42 matthew 1530: my $sec_in_day = 86400;
1.88 matthew 1531: my $last_sub_time = &get_time_from_row($performance_data->[-1]);
1.96 matthew 1532: my ($sday,$smon,$syear) =
1533: (localtime($last_sub_time - $sec_in_day*$i))[3..5];
1.42 matthew 1534: $starttime = &Time::Local::timelocal(0,0,0,$sday,$smon,$syear);
1535: $endtime = $starttime + $sec_in_day;
1536: if ($i == ($num_plots -1 )) {
1.88 matthew 1537: $starttime = &get_time_from_row($performance_data->[0]);
1.42 matthew 1538: }
1539: }
1.96 matthew 1540: $table .= '<tr><td colspan="4" align="center"><font size="+1">'.
1.88 matthew 1541: &mt('Data from [_1] to [_2]',
1542: &Apache::lonlocal::locallocaltime($starttime),
1.96 matthew 1543: &Apache::lonlocal::locallocaltime($endtime)).
1544: '</font></td></tr>'.$/;
1.34 matthew 1545: my $startdateform = &Apache::lonhtmlcommon::date_setter
1546: ('Statistics','startdate_'.$i,$starttime);
1547: my $enddateform = &Apache::lonhtmlcommon::date_setter
1548: ('Statistics','enddate_'.$i,$endtime);
1.42 matthew 1549: #
1550: my $begin_index;
1551: my $end_index;
1552: my $j;
1.88 matthew 1553: while (++$j < scalar(@$performance_data)) {
1554: last if (&get_time_from_row($performance_data->[$j])
1.46 matthew 1555: > $starttime);
1.42 matthew 1556: }
1557: $begin_index = $j;
1.91 matthew 1558: while ($j < scalar(@$performance_data)) {
1559: if (&get_time_from_row($performance_data->[$j]) > $endtime) {
1560: last;
1561: } else {
1562: $j++;
1563: }
1.42 matthew 1564: }
1565: $end_index = $j;
1566: ##
1.96 matthew 1567: my ($processed_time_data,$correct,$data_count,$student_count) =
1568: &OR_time_process_data($performance_data,$begin_index,$end_index);
1.119 matthew 1569: $correct |= 0;
1.96 matthew 1570: ##
1571: $table .= '<tr><td colspan="4" align="center"><font size="+1">'.
1.142.2.3 raeburn 1572: &mt('[quant,_1,submission,submissions,No submissions] from [quant,_2,student], [_3] correct, [_4] incorrect',
1.96 matthew 1573: $data_count,$student_count,$correct,$data_count-$correct).
1574: '</font></td></tr>'.$/;
1.88 matthew 1575: my $concept_correct_plot = '';
1576: if ($num_concepts > 1) {
1577: $concept_correct_plot =
1.96 matthew 1578: &OR_Concept_Time_Analysis($processed_time_data,
1579: $correct,$data_count,$student_count,
1580: $ORdata,$Concepts);
1.42 matthew 1581: }
1.88 matthew 1582: my ($foil_correct_plot,$foil_incorrect_plot) =
1.96 matthew 1583: &OR_Foil_Time_Analysis($processed_time_data,
1584: $correct,$data_count,$student_count,
1585: $ORdata,$Foils,$Concepts);
1.88 matthew 1586: $table .= '<tr>'.
1587: '<td>'.$concept_correct_plot.'</td>'.
1588: '<td>'.$foil_correct_plot.'</td>'.
1589: '<td>'.$foil_incorrect_plot.'</td>'.
1590: '<td align="left" valign="top">'.$foilkey.'</td></tr>'.$/;
1591: $table .= '<tr><td colspan="4" align="center">'.
1.96 matthew 1592: &mt('Start time: [_1]',$startdateform).'<br />'.
1593: &mt('End time: [_1]',$enddateform).'</td></tr>'.$/;
1.135 bisitz 1594: $table.= '<tr><td colspan="4"> </td></tr>'.$/;
1.33 matthew 1595: }
1.88 matthew 1596: $table .= '</table>';
1.42 matthew 1597: #
1.33 matthew 1598: return $table;
1599: }
1600:
1.57 matthew 1601: sub OR_Foil_Time_Analysis {
1.96 matthew 1602: my ($processed_time_data,$correct,$data_count,$student_count,
1603: $ORdata,$Foils,$Concepts) = @_;
1604: if ($data_count <= 0) {
1.132 bisitz 1605: return ('<div class="LC_warning">'
1606: .&mt('There is no data to plot.')
1607: .'</div>'
1608: ,''
1609: );
1.96 matthew 1610: }
1.42 matthew 1611: my $analysis_html;
1.88 matthew 1612: my @plotdata;
1613: my @labels;
1614: foreach my $concept (@{$Concepts}) {
1615: foreach my $foil (@{$concept->{'foils'}}) {
1616: push(@labels,scalar(@labels)+1);
1.96 matthew 1617: my $total = $processed_time_data->{$foil}->{'_total'};
1.88 matthew 1618: if ($total == 0) {
1619: push(@{$plotdata[0]},0);
1.42 matthew 1620: } else {
1.88 matthew 1621: push(@{$plotdata[0]},
1.96 matthew 1622: 100 * $processed_time_data->{$foil}->{'_correct'} / $total);
1.37 matthew 1623: }
1.96 matthew 1624: my $total_incorrect = $total - $processed_time_data->{$foil}->{'_correct'};
1.88 matthew 1625: for (my $i=0;$i<scalar(@{$ORdata->{'_Options'}});$i++) {
1626: my $option = $ORdata->{'_Options'}->[$i];
1627: if ($total_incorrect == 0) {
1628: push(@{$plotdata[$i+1]},0);
1629: } else {
1630: push(@{$plotdata[$i+1]},
1.96 matthew 1631: 100 * $processed_time_data->{$foil}->{$option} / $total_incorrect);
1.88 matthew 1632: }
1633: }
1634: }
1635: # Put in a blank one
1636: push(@labels,'');
1637: push(@{$plotdata[0]},0);
1638: for (my $i=0;$i<scalar(@{$ORdata->{'_Options'}});$i++) {
1639: push(@{$plotdata[$i+1]},0);
1.39 matthew 1640: }
1.42 matthew 1641: }
1642: #
1643: # Create the plot
1.142.2.3 raeburn 1644: my %lt = &Apache::lonlocal::texthash(
1645: 'title' => 'Correct Statements',
1646: 'xlabel' => 'Statement Number',
1647: 'ylabel' => 'Percent Correct');
1648: my $correct_plot = &Apache::loncommon::DrawBarGraph($lt{'title'},
1649: $lt{'xlabel'},
1650: $lt{'ylabel'},
1.96 matthew 1651: 100,
1652: $plotcolors,
1653: undef,
1.105 matthew 1654: $plotdata[0],
1655: {xskip=>1});
1.88 matthew 1656: for (my $j=0; $j< scalar(@{$plotdata[0]});$j++) {
1657: $plotdata[0]->[$j]=0;
1.42 matthew 1658: }
1.142.2.3 raeburn 1659: %lt = &Apache::lonlocal::texthash(
1660: 'title' => 'Incorrect Statements',
1661: 'xlabel' => 'Statement Number',
1662: 'ylabel' => 'Incorrect Option Choice');
1.96 matthew 1663: my $incorrect_plot =
1.142.2.3 raeburn 1664: &Apache::loncommon::DrawBarGraph($lt{'title'},
1665: $lt{'xlabel'},
1666: $lt{'ylabel'},
1.96 matthew 1667: 100,
1668: $plotcolors,
1669: undef,
1.105 matthew 1670: @plotdata,{xskip=>1});
1.88 matthew 1671: return ($correct_plot,$incorrect_plot);
1.42 matthew 1672: }
1673:
1.57 matthew 1674: sub OR_Concept_Time_Analysis {
1.96 matthew 1675: my ($processed_time_data,$correct,$data_count,$student_count,
1676: $ORdata,$Concepts) = @_;
1677: return '' if ($data_count == 0);
1.33 matthew 1678: #
1.42 matthew 1679: # Put the data in plottable form
1.88 matthew 1680: my @plotdata;
1.42 matthew 1681: foreach my $concept (@$Concepts) {
1682: my ($total,$correct);
1683: foreach my $foil (@{$concept->{'foils'}}) {
1.96 matthew 1684: $total += $processed_time_data->{$foil}->{'_total'};
1685: $correct += $processed_time_data->{$foil}->{'_correct'};
1.42 matthew 1686: }
1687: if ($total == 0) {
1.88 matthew 1688: push(@plotdata,0);
1.42 matthew 1689: } else {
1.88 matthew 1690: push(@plotdata,100 * $correct / $total);
1.42 matthew 1691: }
1692: }
1693: #
1.33 matthew 1694: # Create the plot
1.142.2.3 raeburn 1695: my %lt = &Apache::lonlocal::texthash(
1696: 'title' => 'Correct Concepts',
1697: 'xlabel' => 'Concept Number',
1698: 'ylabel' => 'Percent Correct');
1699: return &Apache::loncommon::DrawBarGraph($lt{'title'},
1700: $lt{'xlabel'},
1701: $lt{'ylabel'},
1.88 matthew 1702: 100,
1703: $plotcolors,
1704: undef,
1.105 matthew 1705: \@plotdata,{xskip=>1});
1.42 matthew 1706: }
1707:
1.96 matthew 1708: sub OR_time_process_data {
1709: my ($performance_data,$begin_index,$end_index)=@_;
1710: my %processed_time_data;
1711: my %distinct_students;
1712: my ($correct,$data_count);
1713: if (($begin_index == $end_index) &&
1714: ($end_index != scalar(@$performance_data)-1)) {
1715: return undef;
1716: }
1717: # Be sure we include the last one if we are asked for it.
1718: # That we have to correct here (and not when $end_index is
1719: # given a value) should probably be considered a bug.
1720: if ($end_index == scalar(@$performance_data)-1) {
1721: $end_index++;
1722: }
1723: my $count;
1724: for (my $i=$begin_index;$i<$end_index;$i++) {
1725: my $attempt = $performance_data->[$i];
1726: $count++;
1727: next if (! defined($attempt));
1728: my %attempt = &Process_OR_Row($attempt);
1729: $data_count++;
1730: $correct += $attempt{'_correct'};
1731: $distinct_students{$attempt->[&Apache::loncoursedata::RD_student_id()]}++;
1732: while (my ($foilid,$href) = each(%attempt)) {
1733: if (! ref($href)) {
1734: $processed_time_data{$foilid} += $href;
1735: next;
1736: }
1737: while (my ($option,$value) = each(%$href)) {
1738: $processed_time_data{$foilid}->{$option}+=$value;
1739: }
1740: }
1741: }
1742: return (\%processed_time_data,$correct,$data_count,
1743: scalar(keys(%distinct_students)));
1744: }
1745:
1.46 matthew 1746: sub build_foil_index {
1747: my ($ORdata) = @_;
1.48 matthew 1748: return if (! exists($ORdata->{'_Foils'}));
1749: my %Foildata = %{$ORdata->{'_Foils'}};
1.46 matthew 1750: my @Foils = sort(keys(%Foildata));
1751: my %Concepts;
1752: foreach my $foilid (@Foils) {
1.48 matthew 1753: push(@{$Concepts{$Foildata{$foilid}->{'_Concept'}}},
1.46 matthew 1754: $foilid);
1755: }
1756: undef(@Foils);
1757: # Having gathered the concept information in a hash, we now translate it
1758: # into an array because we need to be consistent about order.
1759: # Also put the foils in order, too.
1760: my $sortfunction = sub {
1761: my %Numbers = (one => 1,
1762: two => 2,
1763: three => 3,
1764: four => 4,
1765: five => 5,
1766: six => 6,
1767: seven => 7,
1768: eight => 8,
1769: nine => 9,
1770: ten => 10,);
1771: my $a1 = lc($a);
1772: my $b1 = lc($b);
1.57 matthew 1773: if (exists($Numbers{$a1})) {
1.67 matthew 1774: $a1 = $Numbers{$a1};
1.57 matthew 1775: }
1776: if (exists($Numbers{$b1})) {
1.67 matthew 1777: $b1 = $Numbers{$b1};
1.46 matthew 1778: }
1.67 matthew 1779: if (($a1 =~/^\d+$/) && ($b1 =~/^\d+$/)) {
1780: return $a1 <=> $b1;
1.57 matthew 1781: } else {
1.67 matthew 1782: return $a1 cmp $b1;
1.46 matthew 1783: }
1784: };
1785: my @Concepts;
1786: foreach my $concept (sort $sortfunction (keys(%Concepts))) {
1.57 matthew 1787: if (! defined($Concepts{$concept})) {
1788: $Concepts{$concept}=[];
1789: # next;
1790: }
1.46 matthew 1791: push(@Concepts,{ name => $concept,
1792: foils => [@{$Concepts{$concept}}]});
1793: push(@Foils,(@{$Concepts{$concept}}));
1794: }
1795: #
1796: # Build up the table of row labels.
1.132 bisitz 1797: my $table = &Apache::loncommon::start_data_table();
1.46 matthew 1798: if (@Concepts > 1) {
1.132 bisitz 1799: $table .= &Apache::loncommon::start_data_table_header_row().
1.46 matthew 1800: '<th>'.&mt('Concept Number').'</th>'.
1801: '<th>'.&mt('Concept').'</th>'.
1802: '<th>'.&mt('Foil Number').'</th>'.
1803: '<th>'.&mt('Foil Name').'</th>'.
1804: '<th>'.&mt('Foil Text').'</th>'.
1805: '<th>'.&mt('Correct Value').'</th>'.
1.132 bisitz 1806: &Apache::loncommon::end_data_table_header_row();
1.46 matthew 1807: } else {
1.132 bisitz 1808: $table .= &Apache::loncommon::start_data_table_header_row().
1.46 matthew 1809: '<th>'.&mt('Foil Number').'</th>'.
1810: '<th>'.&mt('Foil Name').'</th>'.
1811: '<th>'.&mt('Foil Text').'</th>'.
1812: '<th>'.&mt('Correct Value').'</th>'.
1.132 bisitz 1813: &Apache::loncommon::end_data_table_header_row();
1.46 matthew 1814: }
1815: my $conceptindex = 1;
1816: my $foilindex = 1;
1817: foreach my $concept (@Concepts) {
1818: my @FoilsInConcept = @{$concept->{'foils'}};
1819: my $firstfoil = shift(@FoilsInConcept);
1820: if (@Concepts > 1) {
1.132 bisitz 1821: $table .= &Apache::loncommon::start_data_table_row().
1.46 matthew 1822: '<td>'.$conceptindex.'</td>'.
1.83 albertel 1823: '<td>'.&HTML::Entities::encode($concept->{'name'},'<>&"').'</td>'.
1.46 matthew 1824: '<td>'.$foilindex++.'</td>'.
1.83 albertel 1825: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'name'},'<>&"').'</td>'.
1.65 matthew 1826: '<td>'.$Foildata{$firstfoil}->{'text'}.'</td>'.
1.83 albertel 1827: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'value'},'<>&"').'</td>'.
1.132 bisitz 1828: &Apache::loncommon::end_data_table_row();
1.46 matthew 1829: } else {
1.132 bisitz 1830: $table .= &Apache::loncommon::start_data_table_row().
1.46 matthew 1831: '<td>'.$foilindex++.'</td>'.
1.83 albertel 1832: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'name'},'<>&"').'</td>'.
1.65 matthew 1833: '<td>'.$Foildata{$firstfoil}->{'text'}.'</td>'.
1.83 albertel 1834: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'value'},'<>&"').'</td>'.
1.132 bisitz 1835: &Apache::loncommon::end_data_table_row();
1.46 matthew 1836: }
1837: foreach my $foilid (@FoilsInConcept) {
1838: if (@Concepts > 1) {
1.132 bisitz 1839: $table .= &Apache::loncommon::start_data_table_row().
1.46 matthew 1840: '<td></td>'.
1841: '<td></td>'.
1842: '<td>'.$foilindex.'</td>'.
1.83 albertel 1843: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'name'},'<>&"').'</td>'.
1.65 matthew 1844: '<td>'.$Foildata{$foilid}->{'text'}.'</td>'.
1.84 albertel 1845: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'value'},'<>&"').'</td>'.
1.132 bisitz 1846: &Apache::loncommon::end_data_table_row();
1.46 matthew 1847: } else {
1.132 bisitz 1848: $table .= &Apache::loncommon::start_data_table_row().
1.46 matthew 1849: '<td>'.$foilindex.'</td>'.
1.83 albertel 1850: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'name'},'<>&"').'</td>'.
1.65 matthew 1851: '<td>'.$Foildata{$foilid}->{'text'}.'</td>'.
1.83 albertel 1852: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'value'},'<>&"').'</td>'.
1.132 bisitz 1853: &Apache::loncommon::end_data_table_row();
1.46 matthew 1854: }
1855: } continue {
1856: $foilindex++;
1857: }
1858: } continue {
1859: $conceptindex++;
1860: }
1.132 bisitz 1861: $table .= &Apache::loncommon::end_data_table();
1.46 matthew 1862: #
1863: # Build option index with color stuff
1864: return ($table,\@Foils,\@Concepts);
1865: }
1866:
1867: sub build_option_index {
1868: my ($ORdata)= @_;
1869: my $table = "<table>\n";
1870: my $optionindex = 0;
1871: my @Rows;
1.48 matthew 1872: foreach my $option (&mt('correct option chosen'),@{$ORdata->{'_Options'}}) {
1.95 matthew 1873: my $color = $plotcolors->[$optionindex++];
1.46 matthew 1874: push (@Rows,
1875: '<tr>'.
1.95 matthew 1876: '<td bgcolor="'.$color.'">'.
1877: '<font color="'.$color.'">'.('*'x3).'</font>'.'</td>'.
1.83 albertel 1878: '<td>'.&HTML::Entities::encode($option,'<>&"').'</td>'.
1.46 matthew 1879: "</tr>\n");
1880: }
1881: shift(@Rows); # Throw away 'correct option chosen' color
1882: $table .= join('',reverse(@Rows));
1883: $table .= "</table>\n";
1884: }
1885:
1.94 matthew 1886: sub build_foil_key {
1887: my ($foils,$extra_data)= @_;
1888: if (! defined($extra_data)) { $extra_data = {}; }
1889: my $table = "<table>\n";
1890: my $foil_index = 0;
1891: my @rows;
1892: foreach my $foil (&mt('correct foil chosen'),@{$foils}) {
1.95 matthew 1893: my $color = $plotcolors->[$foil_index++];
1.94 matthew 1894: push (@rows,
1895: '<tr>'.
1.95 matthew 1896: '<td bgcolor="'.$color.'" class="key">'.
1897: '<font color="'.$color.'">'.('*'x4).'</font></td>'.
1.94 matthew 1898: '<td>'.&HTML::Entities::encode($foil,'<>&"').
1899: (' 'x2).$extra_data->{$foil}.'</td>'.
1900: "</tr>\n");
1901: }
1902: shift(@rows); # Throw away 'correct foil chosen' color
1903: $table .= join('',reverse(@rows));
1904: $table .= "</table>\n";
1905: }
1906:
1.33 matthew 1907: #########################################################
1908: #########################################################
1909: ##
1.46 matthew 1910: ## Generic Interface Routines
1.33 matthew 1911: ##
1912: #########################################################
1913: #########################################################
1.23 matthew 1914: sub CreateInterface {
1.28 matthew 1915: ##
1916: ## Environment variable initialization
1.120 albertel 1917: if (! exists($env{'form.AnalyzeOver'})) {
1918: $env{'form.AnalyzeOver'} = 'tries';
1.28 matthew 1919: }
1920: ##
1921: ## Build the menu
1.7 stredwic 1922: my $Str = '';
1.132 bisitz 1923: $Str .= '<p>';
1924: $Str .= &Apache::loncommon::start_data_table();
1925: $Str .= &Apache::loncommon::start_data_table_header_row();
1926: $Str .= '<th>'.&mt('Sections').'</th>';
1927: $Str .= '<th>'.&mt('Groups').'</th>';
1928: $Str .= '<th>'.&mt('Access Status').'</th>';
1929: $Str .= '<th>'.&mt('Options').'</th>';
1930: $Str .= &Apache::loncommon::end_data_table_header_row();
1.31 matthew 1931: ##
1932: ##
1.132 bisitz 1933: $Str .= &Apache::loncommon::start_data_table_row();
1934: $Str .= '<td align="center">'."\n";
1.23 matthew 1935: $Str .= &Apache::lonstatistics::SectionSelect('Section','multiple',5);
1.28 matthew 1936: $Str .= '</td>';
1937: #
1.127 raeburn 1938: $Str .= '<td align="center">'."\n";
1939: $Str .= &Apache::lonstatistics::GroupSelect('Group','multiple',5);
1940: $Str .= '</td>';
1941: #
1.28 matthew 1942: $Str .= '<td align="center">';
1.23 matthew 1943: $Str .= &Apache::lonhtmlcommon::StatusOptions(undef,undef,5);
1.28 matthew 1944: $Str .= '</td>';
1945: #
1.36 matthew 1946: ##
1947: ##
1.138 bisitz 1948: $Str .= '<td valign="top">';
1.91 matthew 1949: ##
1950: my $showprob_checkbox =
1.138 bisitz 1951: '<input type="checkbox" name="show_prob" value="true"';
1.120 albertel 1952: if ($env{'form.show_prob'} eq 'true') {
1.138 bisitz 1953: $showprob_checkbox .= ' checked="checked"';
1.91 matthew 1954: }
1955: $showprob_checkbox.= ' />';
1.133 bisitz 1956: $Str.= '<span class="LC_nobreak"><label>'.
1.138 bisitz 1957: $showprob_checkbox.' '.&mt('Show problem').
1.133 bisitz 1958: '</label></span><br />';
1.91 matthew 1959: ##
1.142.2.4 raeburn 1960: my $analyze_selector = '<select name="AnalyzeOver">';
1961: $analyze_selector .= '<option value="tries"';
1.120 albertel 1962: if (! exists($env{'form.AnalyzeOver'}) ||
1963: $env{'form.AnalyzeOver'} eq 'tries'){
1.94 matthew 1964: # Default to tries
1.142.2.4 raeburn 1965: $analyze_selector .= ' selected="selected"';
1.90 matthew 1966: }
1967: $analyze_selector .= '>'.&mt('Tries').'</option>';
1.142.2.4 raeburn 1968: $analyze_selector .= '<option value="time"';
1969: $analyze_selector .= ' selected="selected"' if ($env{'form.AnalyzeOver'} eq 'time');
1.90 matthew 1970: $analyze_selector .= '>'.&mt('Time').'</option>';
1971: $analyze_selector .= '</select>';
1.133 bisitz 1972: $Str .= '<span class="LC_nobreak"><label>'.
1.90 matthew 1973: &mt('Analyze Over [_1] [_2]',
1974: $analyze_selector,
1975: &Apache::loncommon::help_open_topic('Analysis_Analyze_Over')).
1.133 bisitz 1976: '</label></span><br />'.$/;
1.90 matthew 1977: ##
1978: my $numplots_selector = '<select name="NumPlots">';
1.120 albertel 1979: if (! exists($env{'form.NumPlots'})
1980: || $env{'form.NumPlots'} < 1
1981: || $env{'form.NumPlots'} > 20) {
1982: $env{'form.NumPlots'} = 5;
1.90 matthew 1983: }
1984: foreach my $i (1,2,3,4,5,6,7,8,10,15,20) {
1985: $numplots_selector .= '<option value="'.$i.'" ';
1.132 bisitz 1986: if ($env{'form.NumPlots'} == $i) { $numplots_selector.=' selected="selected" '; }
1.90 matthew 1987: $numplots_selector .= '>'.$i.'</option>';
1988: }
1.134 raeburn 1989: $numplots_selector .= '</select>';
1.133 bisitz 1990: $Str .= '<span class="LC_nobreak"><label>'.&mt('Number of Plots [_1]',$numplots_selector).
1.134 raeburn 1991: '</label></span><br />';
1.90 matthew 1992: ##
1.132 bisitz 1993: $Str .= '</td>';
1994: ##
1995: ##
1996: $Str .= &Apache::loncommon::end_data_table_row();
1997: $Str .= &Apache::loncommon::end_data_table();
1998: $Str .= '<p class="LC_nobreak"><label>'
1.131 bisitz 1999: .&mt('Status: [_1]',
2000: '<input type="text" name="stats_status"'
2001: .' size="60" value="" readonly="readonly" />')
1.132 bisitz 2002: .'</label></p>';
2003: $Str .= '</p>';
1.42 matthew 2004: return $Str;
1.54 matthew 2005: }
1.47 matthew 2006:
2007: #########################################################
2008: #########################################################
2009: ##
2010: ## Misc Option Response functions
2011: ##
2012: #########################################################
2013: #########################################################
2014: sub get_time_from_row {
1.42 matthew 2015: my ($row) = @_;
2016: if (ref($row)) {
1.47 matthew 2017: return $row->[&Apache::loncoursedata::RD_timestamp()];
1.42 matthew 2018: }
2019: return undef;
2020: }
2021:
1.47 matthew 2022: sub get_tries_from_row {
1.42 matthew 2023: my ($row) = @_;
2024: if (ref($row)) {
1.47 matthew 2025: return $row->[&Apache::loncoursedata::RD_tries()];
1.42 matthew 2026: }
2027: return undef;
2028: }
2029:
1.48 matthew 2030: sub hashify_attempt {
2031: my ($row) = @_;
2032: my %attempt;
1.94 matthew 2033: $attempt{'student'} = $row->[&Apache::loncoursedata::RD_sname()];
1.48 matthew 2034: $attempt{'tries'} = $row->[&Apache::loncoursedata::RD_tries()];
1.126 www 2035: $attempt{'submission'} = &unescape($row->[&Apache::loncoursedata::RD_submission()]);
1.48 matthew 2036: $attempt{'award'} = $row->[&Apache::loncoursedata::RD_awarddetail()];
2037: $attempt{'timestamp'} = $row->[&Apache::loncoursedata::RD_timestamp()];
2038: return %attempt;
2039: }
2040:
1.46 matthew 2041: sub Process_OR_Row {
1.42 matthew 2042: my ($row) = @_;
2043: my %RowData;
1.96 matthew 2044: # my $student_id = $row->[&Apache::loncoursedata::RD_student_id()];
1.47 matthew 2045: my $award = $row->[&Apache::loncoursedata::RD_awarddetail()];
2046: my $grading = $row->[&Apache::loncoursedata::RD_response_eval()];
2047: my $submission = $row->[&Apache::loncoursedata::RD_submission()];
2048: my $time = $row->[&Apache::loncoursedata::RD_timestamp()];
1.96 matthew 2049: # my $tries = $row->[&Apache::loncoursedata::RD_tries()];
1.43 matthew 2050: return undef if ($award eq 'MISSING_ANSWER');
1.97 matthew 2051: if (&submission_is_correct($award)) {
1.42 matthew 2052: $RowData{'_correct'} = 1;
2053: }
2054: $RowData{'_total'} = 1;
2055: my @Foilgrades = split('&',$grading);
2056: my @Foilsubs = split('&',$submission);
2057: for (my $j=0;$j<=$#Foilgrades;$j++) {
2058: my ($foilid,$correct) = split('=',$Foilgrades[$j]);
1.126 www 2059: $foilid = &unescape($foilid);
1.42 matthew 2060: my (undef,$submission) = split('=',$Foilsubs[$j]);
2061: if ($correct) {
2062: $RowData{$foilid}->{'_correct'}++;
2063: } else {
1.126 www 2064: $submission = &unescape($submission);
1.42 matthew 2065: $RowData{$foilid}->{$submission}++;
2066: }
2067: $RowData{$foilid}->{'_total'}++;
2068: }
2069: return %RowData;
1.47 matthew 2070: }
2071:
1.97 matthew 2072: sub submission_is_correct {
2073: my ($award) = @_;
2074: if ($award =~ /(APPROX_ANS|EXACT_ANS)/) {
2075: return 1;
2076: } else {
2077: return 0;
2078: }
2079: }
2080:
1.23 matthew 2081: 1;
1.1 stredwic 2082:
2083: __END__
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