Annotation of loncom/interface/statistics/lonproblemanalysis.pm, revision 1.147
1.1 stredwic 1: # The LearningOnline Network with CAPA
2: #
1.147 ! raeburn 3: # $Id: lonproblemanalysis.pm,v 1.146 2014/02/26 17:46:19 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();
1.140 www 34: use Apache::lonquickgrades();
1.23 matthew 35: use Apache::lonstatistics;
36: use Apache::lonlocal;
1.71 matthew 37: use Apache::lonstathelpers();
38: use Apache::lonstudentsubmissions();
1.37 matthew 39: use HTML::Entities();
1.42 matthew 40: use Time::Local();
1.106 matthew 41: use capa;
1.126 www 42: use lib '/home/httpd/lib/perl/';
43: use LONCAPA;
44:
1.2 stredwic 45:
1.40 matthew 46: my $plotcolors = ['#33ff00',
47: '#0033cc', '#990000', '#aaaa66', '#663399', '#ff9933',
48: '#66ccff', '#ff9999', '#cccc33', '#660000', '#33cc66',
49: ];
1.39 matthew 50:
1.54 matthew 51: my @SubmitButtons = ({ name => 'PrevProblemAnalysis',
52: text => 'Previous Problem' },
53: { name => 'ProblemAnalysis',
1.46 matthew 54: text => 'Analyze Problem Again' },
1.54 matthew 55: { name => 'NextProblemAnalysis',
56: text => 'Next Problem' },
57: { name => 'break'},
1.46 matthew 58: { name => 'SelectAnother',
1.111 matthew 59: text => 'Choose a different Problem' });
1.46 matthew 60:
1.1 stredwic 61: sub BuildProblemAnalysisPage {
1.23 matthew 62: my ($r,$c)=@_;
1.49 matthew 63: #
64: my %Saveable_Parameters = ('Status' => 'scalar',
65: 'Section' => 'array',
1.127 raeburn 66: 'Groups' => 'array',
1.49 matthew 67: 'NumPlots' => 'scalar',
68: 'AnalyzeOver' => 'scalar',
69: );
70: &Apache::loncommon::store_course_settings('problem_analysis',
71: \%Saveable_Parameters);
72: &Apache::loncommon::restore_course_settings('problem_analysis',
73: \%Saveable_Parameters);
74: #
75: &Apache::lonstatistics::PrepareClasslist();
1.48 matthew 76: #
1.140 www 77: $r->print(&Apache::lonhtmlcommon::breadcrumbs('Detailed Problem Analysis'));
78: &Apache::lonquickgrades::startGradeScreen($r,'statistics');
79:
1.25 matthew 80: $r->print(&CreateInterface());
1.28 matthew 81: #
82: my @Students = @Apache::lonstatistics::Students;
83: #
1.120 albertel 84: if (@Students < 1 && exists($env{'form.firstrun'})) {
1.132 bisitz 85: $r->print('<div class="LC_warning">'
86: .&mt('There are no students in the sections/groups selected.')
87: .'</div>'
88: );
1.46 matthew 89: }
90: #
1.85 matthew 91: my @CacheButtonHTML =
92: &Apache::lonstathelpers::manage_caches($r,'Statistics','stats_status');
1.39 matthew 93: $r->rflush();
1.46 matthew 94: #
1.147 ! raeburn 95: my $problem_types = &analyzable_types();
1.120 albertel 96: if (exists($env{'form.problemchoice'}) &&
97: ! exists($env{'form.SelectAnother'})) {
1.46 matthew 98: foreach my $button (@SubmitButtons) {
1.54 matthew 99: if ($button->{'name'} eq 'break') {
100: $r->print("<br />\n");
101: } else {
102: $r->print('<input type="submit" name="'.$button->{'name'}.'" '.
103: 'value="'.&mt($button->{'text'}).'" />');
104: $r->print(' 'x5);
105: }
1.46 matthew 106: }
1.85 matthew 107: foreach my $html (@CacheButtonHTML) {
108: $r->print($html.(' 'x5));
109: }
1.31 matthew 110: #
1.123 bowersj2 111:
112: # This is commented out pending actual implementation of
113: # CSV and Excel output.
114: #$r->print(&Apache::lonstathelpers::submission_report_form
115: # ('problem_analysis'));
1.115 matthew 116: #
1.25 matthew 117: $r->print('<hr />');
1.54 matthew 118: $r->rflush();
119: #
120: # Determine which problem we are to analyze
1.147 ! raeburn 121: my ($navmap,$current_problem) = &get_current_problem(); # need to retrieve $navmap
! 122: # to support $resource->* calls
! 123: # for src and compTitle (below)
1.23 matthew 124: #
1.54 matthew 125: # Store the current problem choice and send it out in the form
1.120 albertel 126: $env{'form.problemchoice'} =
1.61 matthew 127: &Apache::lonstathelpers::make_target_id($current_problem);
1.54 matthew 128: $r->print('<input type="hidden" name="problemchoice" value="'.
1.120 albertel 129: $env{'form.problemchoice'}.'" />');
1.28 matthew 130: #
1.54 matthew 131: if (! defined($current_problem->{'resource'})) {
1.46 matthew 132: $r->print('resource is undefined');
133: } else {
1.54 matthew 134: my $resource = $current_problem->{'resource'};
1.116 matthew 135: $r->print('<h1>'.$resource->compTitle.'</h1>');
136: $r->print('<h3>'.$resource->src.'</h3>');
1.142 golterma 137: $r->print('<p>'.&Apache::lonstatistics::section_and_enrollment_description().'</p>');
1.120 albertel 138: if ($env{'form.show_prob'} eq 'true') {
1.132 bisitz 139: $r->print('<hr />'
140: .&Apache::lonstathelpers::render_resource($resource)
141: .'<hr />'
142: );
1.91 matthew 143: }
1.44 matthew 144: $r->rflush();
1.129 albertel 145: if (@Students) {
146: my %Data = &Apache::lonstathelpers::get_problem_data
147: ($resource->src);
148: my $problem_data = $Data{$current_problem->{'part'}.
149: '.'.
150: $current_problem->{'respid'}};
151: if ($current_problem->{'resptype'} eq 'option') {
152: &OptionResponseAnalysis($r,$current_problem,
153: $problem_data,
154: \@Students);
155: } elsif ($current_problem->{'resptype'} eq 'radiobutton') {
156: &radio_response_analysis($r,$current_problem,
157: $problem_data,
158: \@Students);
159: } elsif ($current_problem->{'resptype'} eq 'numerical') {
160: &numerical_response_analysis($r,$current_problem,
161: $problem_data,\@Students);
162: } else {
1.132 bisitz 163: $r->print('<div class="LC_warning">'
164: .&mt('Analysis of [_1] is not supported.'
165: ,$current_problem->{'resptype'})
166: .'</div>'
167: );
1.129 albertel 168: }
169: }
1.7 stredwic 170: }
1.23 matthew 171: $r->print('<hr />');
1.25 matthew 172: } else {
1.121 matthew 173: my $submit_button = '<input type="submit" '.
174: 'name="ProblemAnalysis" value="'.
175: &mt('Analyze Problem').'" />';
176: $r->print($submit_button);
1.31 matthew 177: $r->print(' 'x5);
1.27 matthew 178: $r->print('<h3>'.&mt('Please select a problem to analyze').'</h3>');
1.121 matthew 179: $r->print(&Apache::lonstathelpers::problem_selector($problem_types,
180: $submit_button));
1.1 stredwic 181: }
182: }
183:
1.147 ! raeburn 184: sub analyzable_types {
! 185: return '(option|radiobutton|numerical)';
! 186: }
! 187:
! 188: sub get_current_problem {
! 189: my ($problem_types) = @_;
! 190: my $current_problem = &Apache::lonstathelpers::get_target_from_id
! 191: ($env{'form.problemchoice'});
! 192: my ($navmap,$prev,$curr,$next) =
! 193: &Apache::lonstathelpers::get_prev_curr_next($current_problem,
! 194: $problem_types,
! 195: 'response');
! 196: if (exists($env{'form.PrevProblemAnalysis'}) && ($prev ne '')) {
! 197: $current_problem = $prev;
! 198: } elsif (exists($env{'form.NextProblemAnalysis'}) && ($next ne '')) {
! 199: $current_problem = $next;
! 200: } else {
! 201: $current_problem = $curr;
! 202: }
! 203: return ($navmap,$current_problem);
! 204: }
! 205:
1.69 matthew 206: #########################################################
207: #########################################################
208: ##
1.66 matthew 209: ## Numerical Response Routines
210: ##
211: #########################################################
212: #########################################################
1.103 matthew 213: sub numerical_response_analysis {
214: my ($r,$problem,$problem_analysis,$students) = @_;
1.79 matthew 215: my $c = $r->connection();
1.103 matthew 216: #
1.120 albertel 217: if ($env{'form.AnalyzeOver'} !~ /^(tries|time)$/) {
1.103 matthew 218: $r->print('Bad request');
219: }
220: #
1.82 matthew 221: my ($resource,$partid,$respid) = ($problem->{'resource'},
222: $problem->{'part'},
223: $problem->{'respid'});
1.103 matthew 224: # Gather student data
225: my $response_data = &Apache::loncoursedata::get_response_data
1.118 matthew 226: ([&Apache::lonstatistics::get_selected_sections()],
1.127 raeburn 227: [&Apache::lonstatistics::get_selected_groups()],
1.82 matthew 228: $Apache::lonstatistics::enrollment_status,
1.116 matthew 229: $resource->symb,$respid);
1.103 matthew 230: #
1.104 matthew 231: $problem_analysis->{'answercomputed'} = 1;
232: if ($problem_analysis->{'answercomputed'}) {
233: my $answers =
234: &Apache::lonstathelpers::GetStudentAnswers($r,$problem,$students,
235: 'Statistics',
236: 'stats_status');
237: $r->print(&numerical_one_dimensional_plot($r,600,150,$answers));
238: }
1.106 matthew 239: #
240: if (ref($response_data) ne 'ARRAY') {
1.132 bisitz 241: $r->print('<div class="LC_warning">'
242: .&mt('There is no submission data for this resource.')
243: .'</div>'
244: );
1.106 matthew 245: return;
246: }
1.104 matthew 247: my $analysis_html = '<table>';
1.120 albertel 248: for (my $plot_num = 1;$plot_num<=$env{'form.NumPlots'};$plot_num++) {
1.103 matthew 249: my $restriction_function;
1.104 matthew 250: my $header_message;
251: my $stats_message;
252: my $post_message; # passed through &mt sooner rather than later
253: my $no_data_message;
254: my @extra_data;
1.120 albertel 255: if ($env{'form.AnalyzeOver'} eq 'tries') {
1.104 matthew 256: $restriction_function = sub {($_[0]->{'tries'} == $plot_num?1:0)};
257: $header_message = 'Attempt [_1]';
258: $stats_message =
259: '[_1] submissions, [_2] correct, [_3] incorrect';
260: $post_message = '';
1.132 bisitz 261: $no_data_message = 'No data exists for attempt [_1].';
1.104 matthew 262: } else {
263: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
264: ('startdate_'.$plot_num);
265: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
266: ('enddate_'.$plot_num);
267: ($starttime,$endtime) = &ensure_start_end_times
268: ($starttime,$endtime,
269: &get_time_from_row($response_data->[0]),
270: &get_time_from_row($response_data->[-1]),
271: $plot_num);
272: $header_message = 'Data from [_2] to [_3]';
273: $extra_data[0] = &Apache::lonlocal::locallocaltime($starttime);
274: $extra_data[1] = &Apache::lonlocal::locallocaltime($endtime);
275: #
276: $stats_message =
277: '[_1] submissions from [_4] students, [_2] correct, [_3] incorrect';
278: #
279: $post_message =
280: &mt('Start time: [_1]',
281: &Apache::lonhtmlcommon::date_setter
282: ('Statistics','startdate_'.$plot_num,$starttime)).
283: '<br />'.
284: &mt('End time: [_1]',
285: &Apache::lonhtmlcommon::date_setter
286: ('Statistics','enddate_'.$plot_num,$endtime));
287: $restriction_function =
288: sub {
289: my $t = $_[0]->{'timestamp'};
290: if ($t >= $starttime && $t < $endtime) {
291: return 1;
292: } else {
293: return 0;
294: }
295: };
296: $no_data_message = 'No data for [_2] to [_3]';
297: }
1.103 matthew 298: #
1.106 matthew 299: my ($correct,$answers) =
300: &numerical_determine_answers($r,$resource,$partid,
301: $respid,$students);
1.103 matthew 302: if ($c->aborted()) { return; };
303: #
1.112 matthew 304: my ($responses,$stats) =
305: &numerical_classify_responses($response_data,$correct,
306: $restriction_function);
307: if ($stats->{'submission_count'} == 0) {
1.104 matthew 308: $analysis_html.=
1.132 bisitz 309: '<tr><td colspan="2"><div class="LC_warning">'.
1.104 matthew 310: &mt($no_data_message,$plot_num,@extra_data).
1.132 bisitz 311: '</div></td></tr>';
1.104 matthew 312: } else {
313: $analysis_html.=
314: '<tr><td colspan="2" align="center"><font size="+1"><b>'.
315: &mt($header_message,$plot_num,@extra_data).
316: '</b></font></td></tr>'.
317: '<tr><td colspan="2" align="center">'.
318: &mt($stats_message,
1.112 matthew 319: $stats->{'submission_count'},
320: $stats->{'correct_count'},
321: $stats->{'incorrect_count'},
322: $stats->{'students'},
1.104 matthew 323: @extra_data).
324: '</td></tr>'.
325: '<tr>'.'<td valign="top" align="center">'.
1.112 matthew 326: &numerical_plot_percent($r,$responses,$stats).'</td>'.
1.104 matthew 327: '<td align="center" valign="top">'.
1.112 matthew 328: &numerical_plot_differences($r,$responses,$stats).'</td>'.
1.104 matthew 329: '</tr>';
330: }
331: if ($post_message ne '') {
332: $analysis_html .=
333: '<tr><td colspan="2">'.$post_message.'</td></tr>';
334: }
1.66 matthew 335: }
1.104 matthew 336: $analysis_html.='</table>';
337: $r->print($analysis_html);
1.78 matthew 338: #
1.103 matthew 339: return;
340: }
1.102 matthew 341:
1.103 matthew 342: sub numerical_plot_percent {
1.112 matthew 343: my ($r,$responses,$stats) = @_;
1.103 matthew 344: #
1.112 matthew 345: my $total = $stats->{'submission_count'};
1.103 matthew 346: return '' if ($total == 0);
1.114 matthew 347: my $max_bins = 50;
348: my $lowest_percent = $stats->{'min_percent'};
349: my $highest_percent = $stats->{'max_percent'};
350: my $percent_spread = $highest_percent - $lowest_percent;
351: foreach (qw/20 30 40 50 100 200/) {
352: if ($percent_spread < $_) {
353: $highest_percent =$_/2;
354: last;
355: }
1.113 matthew 356: }
1.129 albertel 357: $percent_spread = $highest_percent - $lowest_percent;
1.114 matthew 358: my $bin_size = 1;
359: foreach (qw/0.01 0.05 0.1 0.5 1 2 5 10 20 25 50 100/) {
360: if ($lowest_percent/2 < $_){
361: $bin_size = $_;
1.129 albertel 362: if ( ($percent_spread/$bin_size) < $max_bins ) {
363: last;
364: }
1.114 matthew 365: }
1.113 matthew 366: }
1.103 matthew 367: my @bins;
1.114 matthew 368: for (my $bin = -$highest_percent;$bin<0;$bin+=$bin_size) {
369: push (@bins,$bin);
370: }
371: for (my $bin = 0; $bin<$highest_percent;$bin+=$bin_size) {
372: push (@bins,$bin);
1.103 matthew 373: }
1.114 matthew 374: push(@bins,$highest_percent);
1.103 matthew 375: #
376: my @correct;
377: my @incorrect;
1.104 matthew 378: my @count;
1.112 matthew 379: while (my ($ans,$submissions) = each(%$responses)) {
1.104 matthew 380: while (my ($submission,$counts) = each(%$submissions)) {
381: my ($correct_count,$incorrect_count) = @$counts;
1.122 albertel 382: my $scaled_value =
383: ($ans) ? 100*($submission-$ans)/abs($ans)
384: : 0;
1.114 matthew 385: if ($scaled_value < $bins[0]) {
386: $bins[0]=$scaled_value -1;
387: }
388: my $bin;
389: for ($bin=0;$bin<$#bins;$bin++) {
1.103 matthew 390: last if ($bins[$bin]>$scaled_value);
391: }
1.114 matthew 392: $correct[$bin-1]+=$correct_count;
393: $incorrect[$bin-1]+=$incorrect_count;
394: $count[$bin-1]+=$correct_count+$incorrect_count;
1.103 matthew 395: }
396: }
397: #
1.114 matthew 398: my @plot_correct = @correct;
399: my @plot_incorrect = @incorrect;
400: my $max;
401: for (my $i=0;$i<$#bins;$i++) {
402: $plot_correct[$i] *= 100/$total;
403: $plot_incorrect[$i] *= 100/$total;
404: if (! defined($max) ||
405: $max < $plot_correct[$i]+$plot_incorrect[$i] ) {
406: $max = $plot_correct[$i]+$plot_incorrect[$i];
1.112 matthew 407: }
408: }
1.114 matthew 409: foreach (qw/1 5 10 15 20 25 30 40 50 75 100/) {
410: if ($max <$_) { $max = $_; last; }
1.103 matthew 411: }
1.112 matthew 412: #
1.144 bisitz 413: my %lt = &Apache::lonlocal::texthash(
414: 'title' => 'Percent Difference',
415: 'xlabel' => 'Percent Difference from Correct',
416: 'ylabel' => 'Percent of Answers');
1.114 matthew 417: my @labels = (1..scalar(@bins)-1);
1.103 matthew 418: my $graph = &Apache::loncommon::DrawBarGraph
1.144 bisitz 419: ($lt{'title'},$lt{'xlabel'},$lt{'ylabel'},
1.114 matthew 420: $max,['#33FF00','#FF3300'],\@labels,\@plot_correct,\@plot_incorrect,
1.103 matthew 421: {xskip=>1});
422: #
1.104 matthew 423: my $table = $graph.$/.
424: &numerical_bin_table(\@bins,\@labels,\@incorrect,\@correct,\@count).$/;
1.103 matthew 425: return $table;
426: }
427:
428: sub numerical_plot_differences {
1.112 matthew 429: my ($r,$responses,$stats) = @_;
1.103 matthew 430: #
1.112 matthew 431: my $total = $stats->{'submission_count'};
1.103 matthew 432: return '' if ($total == 0);
1.114 matthew 433: my $max_bins = 21;
1.113 matthew 434: my $min_bin_size = $stats->{'min_abs'};
435: my $low_bin = $stats->{'lowest_ans'}-$stats->{'max_bin_size'};
436: my $high_bin = $stats->{'highest_ans'}+$stats->{'max_bin_size'};
437: if ($high_bin > 0 && $low_bin > -$high_bin) {
438: $low_bin = -$high_bin;
439: } elsif ($low_bin < 0 && $high_bin < -$low_bin) {
440: $high_bin = -$low_bin;
441: }
1.129 albertel 442: if ($high_bin == $low_bin) {
443: $high_bin+=1;
444: $low_bin-=1;
445: }
1.124 bowersj2 446: if (!$min_bin_size ||
447: ($high_bin -$low_bin)/$min_bin_size * 2 > $max_bins) {
1.113 matthew 448: $min_bin_size = abs($high_bin - $low_bin) / $max_bins * 2;
449: }
1.103 matthew 450: my @bins;
1.113 matthew 451: for (my $num = $low_bin;$num <= $high_bin;$num+=($min_bin_size/2)) {
452: push(@bins,$num);
1.103 matthew 453: }
454: #
455: my @correct;
456: my @incorrect;
1.104 matthew 457: my @count;
1.112 matthew 458: while (my ($ans,$submissions) = each(%$responses)) {
1.104 matthew 459: while (my ($submission,$counts) = each(%$submissions)) {
460: my ($correct_count,$incorrect_count) = @$counts;
1.113 matthew 461: my $scaled_value = $submission-$ans;
1.114 matthew 462: if ($scaled_value < $bins[0]) {
463: $bins[0]=$scaled_value-1;
464: }
1.103 matthew 465: my $bin=0;
1.114 matthew 466: for ($bin=0;$bin<$#bins;$bin++) {
1.113 matthew 467: last if ($bins[$bin]>$scaled_value);
1.103 matthew 468: }
1.114 matthew 469: $correct[$bin-1]+=$correct_count;
470: $incorrect[$bin-1]+=$incorrect_count;
471: $count[$bin-1]+=$correct_count+$incorrect_count;
1.103 matthew 472: }
473: }
1.113 matthew 474: my @plot_correct = @correct;
475: my @plot_incorrect = @incorrect;
1.114 matthew 476: my $max;
1.103 matthew 477: for (my $i=0;$i<=$#bins;$i++) {
1.113 matthew 478: $plot_correct[$i] *= 100/$total;
479: $plot_incorrect[$i] *= 100/$total;
1.114 matthew 480: if (! defined($max) ||
481: $max < $plot_correct[$i]+$plot_incorrect[$i] ) {
482: $max = $plot_correct[$i]+$plot_incorrect[$i];
483: }
484: }
485: foreach (qw/1 5 10 15 20 25 30 40 50 75 100/) {
486: if ($max <$_) { $max = $_; last; }
1.103 matthew 487: }
1.113 matthew 488: #
1.144 bisitz 489: my %lt = &Apache::lonlocal::texthash(
490: 'title' => 'Difference between submission and correct',
491: 'xlabel' => 'Difference from Correct',
492: 'ylabel' => 'Percent of Answers');
1.114 matthew 493: my @labels = (1..scalar(@bins)-1);
1.103 matthew 494: my $graph = &Apache::loncommon::DrawBarGraph
1.144 bisitz 495: ($lt{'title'},$lt{'xlabel'},$lt{'ylabel'},
1.114 matthew 496: $max,['#33FF00','#FF3300'],\@labels,\@plot_correct,\@plot_incorrect,
1.104 matthew 497: {xskip=>1});
1.103 matthew 498: #
1.104 matthew 499: my $table = $graph.$/.
500: &numerical_bin_table(\@bins,\@labels,\@incorrect,\@correct,\@count).$/;
501: return $table;
502: }
503:
504: sub numerical_classify_responses {
505: my ($full_row_data,$correct,$function) = @_;
506: my %submission_data;
507: my %students;
1.112 matthew 508: my %stats;
1.104 matthew 509: my $max=0;
510: foreach my $row (@$full_row_data) {
511: my %subm = &hashify_attempt($row);
512: if (ref($correct) eq 'HASH') {
1.112 matthew 513: my $s_correct = $correct->{$subm{'student'}};
514: $subm{'correct'} = $s_correct->{'answer'};
515: foreach my $item ('unit','ans_low','ans_high') {
516: $subm{$item} = $s_correct->{$item};
517: }
1.106 matthew 518: } else { # This probably never happens....
519: $subm{'correct'} = $correct->{'answer'};
520: $subm{'unit'} = $correct->{'unit'};
1.104 matthew 521: }
1.112 matthew 522: #
523: my $abs_low =abs($subm{'correct'}-$subm{'ans_low'});
524: my $abs_high=abs($subm{'correct'}-$subm{'ans_high'});
525: if (! defined($stats{'min_abs'}) ||
526: $stats{'min_abs'} > $abs_low) {
527: $stats{'min_abs'} = $abs_low;
528: }
529: if ($stats{'min_abs'} > $abs_high) {
530: $stats{'min_abs'} = $abs_high;
531: }
532: if (! defined($stats{'max_abs'}) ||
533: $stats{'max_abs'} < $abs_low) {
534: $stats{'max_abs'} = $abs_low;
535: }
536: if ($stats{'max_abs'} < $abs_high) {
537: $stats{'max_abs'} = $abs_high;
538: }
1.119 matthew 539: my $low_percent;
540: my $high_percent;
541: if (defined($subm{'correct'}) && $subm{'correct'} != 0) {
542: $low_percent = 100 * abs($abs_low / $subm{'correct'});
543: $high_percent = 100 * abs($abs_high / $subm{'correct'});
544: }
1.112 matthew 545: if (! defined($stats{'min_percent'}) ||
546: $stats{'min_percent'} > $low_percent) {
547: $stats{'min_percent'} = $low_percent;
548: }
549: if ($stats{'min_percent'} > $high_percent) {
550: $stats{'min_percent'} = $high_percent;
551: }
552: if (! defined($stats{'max_percent'}) ||
553: $stats{'max_percent'} < $low_percent) {
554: $stats{'max_percent'} = $low_percent;
555: }
556: if ($stats{'max_percent'} < $high_percent) {
557: $stats{'max_percent'} = $high_percent;
558: }
559: if (! defined($stats{'lowest_ans'}) ||
560: $stats{'lowest_ans'} > $subm{'correct'}) {
561: $stats{'lowest_ans'} = $subm{'correct'};
562: }
563: if (! defined($stats{'highest_ans'}) ||
564: $stats{'highest_ans'} < $subm{'correct'}) {
565: $stats{'highest_ans'} = $subm{'correct'};
566: }
567: #
1.104 matthew 568: $subm{'submission'} =~ s/=\d+\s*$//;
569: if (&$function(\%subm)) {
1.106 matthew 570: my $scaled = '1';
571: my ($sname,$sdom) = split(':',$subm{'student'});
1.109 matthew 572: my ($myunit,$mysub) = ($subm{'unit'},$subm{'submission'});
573: my $result =
574: &capa::caparesponse_get_real_response($myunit,
575: $mysub,
576: \$scaled);
1.114 matthew 577: # &Apache::lonnet::logthis('scaled = '.$scaled.' result ='.$result);
1.109 matthew 578: next if (! defined($scaled));
1.112 matthew 579: # next if ($result ne '6');
1.109 matthew 580: my $submission = $scaled;
1.104 matthew 581: $students{$subm{'student'}}++;
1.112 matthew 582: $stats{'submission_count'}++;
1.104 matthew 583: if (&numerical_submission_is_correct($subm{'award'})) {
1.112 matthew 584: $stats{'correct_count'}++;
1.104 matthew 585: $submission_data{$subm{'correct'}}->{$submission}->[0]++;
586: } elsif (&numerical_submission_is_incorrect($subm{'award'})) {
1.112 matthew 587: $stats{'incorrect_count'}++;
1.104 matthew 588: $submission_data{$subm{'correct'}}->{$submission}->[1]++;
589: }
590: }
591: }
1.119 matthew 592: $stats{'correct_count'} |= 0;
593: $stats{'incorrect_count'} |= 0;
1.112 matthew 594: $stats{'students'}=scalar(keys(%students));
595: return (\%submission_data,\%stats);
1.104 matthew 596: }
597:
598: sub numerical_submission_is_correct {
599: my ($award) = @_;
600: if ($award =~ /^(APPROX_ANS|EXACT_ANS)$/) {
601: return 1;
602: } else {
603: return 0;
604: }
605: }
606:
607: sub numerical_submission_is_incorrect {
608: my ($award) = @_;
609: if ($award =~ /^(INCORRECT)$/) {
610: return 1;
611: } else {
612: return 0;
613: }
614: }
615:
616: sub numerical_bin_table {
617: my ($bins,$labels,$incorrect,$correct,$count)=@_;
618: my $table =
619: '<table><tr><th>'.&mt('Bar').'</th>'.
620: '<th colspan="3">'.&mt('Range').'</th>'.
621: '<th>'.&mt('Incorrect').'</th>'.
622: '<th>'.&mt('Correct').'</th>'.
623: '<th>'.&mt('Count').'</th>'.
624: '</tr>'.$/;
1.113 matthew 625: for (my $i=0;$i<scalar(@{$bins}-1);$i++) {
626: my $lownum = $bins->[$i];
1.114 matthew 627: if ($i == 0) { $lownum = '-∞'; }
1.113 matthew 628: my $highnum = $bins->[$i+1];
1.114 matthew 629: if ($i == scalar(@{$bins})-2) { $highnum = '∞'; }
1.103 matthew 630: $table .=
631: '<tr>'.
1.104 matthew 632: '<td>'.$labels->[$i].'</td>'.
1.103 matthew 633: '<td align="right">'.$lownum.'</td>'.
634: '<td> - </td>'.
1.104 matthew 635: '<td align="right">'.$highnum.'</td>'.
636: '<td align="right">'.$incorrect->[$i].'</td>'.
637: '<td align="right">'.$correct->[$i].'</td>'.
638: '<td align="right">'.$count->[$i].'</td>'.
639: '</tr>'.$/;
1.103 matthew 640: }
1.104 matthew 641: $table.= '</table>';
1.103 matthew 642: return $table;
1.66 matthew 643: }
644:
1.106 matthew 645: sub numerical_determine_answers {
1.103 matthew 646: my ($r,$resource,$partid,$respid,$students)=@_;
647: my $c = $r->connection();
1.78 matthew 648: #
1.141 www 649: my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin($r,scalar(@$students));
1.103 matthew 650: #
651: # Read in the cache (if it exists) before we start timing things.
652: &Apache::lonstathelpers::ensure_proper_cache($resource->{'symb'});
653: #
654: my $correct;
655: my %answers;
656: foreach my $student (@$students) {
657: last if ($c->aborted());
658: my $sname = $student->{'username'};
659: my $sdom = $student->{'domain'};
660: # analyze problem
661: my $analysis =
662: &Apache::lonstathelpers::analyze_problem_as_student($resource,
663: $sname,
664: $sdom);
665: # make the key
666: my $key = $partid.'.'.$respid;
1.130 albertel 667: # pick one of the possible answers
668: my $which = 'INTERNAL';
669: if (!exists($analysis->{$key}{$which})) {
670: $which = (sort(keys(%{ $analysis->{$key} })))[0];
671: }
1.112 matthew 672: foreach my $item ('answer','unit','ans_high','ans_low') {
1.130 albertel 673: if (ref($analysis->{$key.'.'.$item}) eq 'ARRAY') {
674: $correct->{$sname.':'.$sdom}->{$item} =
675: $analysis->{$key.'.'.$item}[0];
676: } else {
677: $correct->{$sname.':'.$sdom}->{$item} =
678: $analysis->{$key.'.'.$item}{$which}[0][0];
679: }
1.112 matthew 680: }
1.130 albertel 681: $answers{$correct->{$sname.':'.$sdom}{'answer'}}++;
1.112 matthew 682: &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
1.139 bisitz 683: 'last student');
1.82 matthew 684: }
1.103 matthew 685: &Apache::lonstathelpers::write_analysis_cache();
1.112 matthew 686: &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
1.106 matthew 687: return ($correct,\%answers);
1.103 matthew 688: }
689:
1.104 matthew 690: #
691: # Inputs: $r, $width, $height, $data
692: # $n = number of students
693: # $data = hashref of $answer => $frequency pairs
1.103 matthew 694: sub numerical_one_dimensional_plot {
1.104 matthew 695: my ($r,$width,$height,$data)=@_;
1.78 matthew 696: #
1.103 matthew 697: # Compute data -> image scaling factors
1.78 matthew 698: my $max_y = 0;
1.103 matthew 699: my $min_x = undef;
700: my $max_x = undef;
1.104 matthew 701: my $n = 0;
1.103 matthew 702: while (my ($answer,$count) = each(%$data)) {
1.104 matthew 703: $n+=$count;
1.103 matthew 704: $max_y = $count if ($max_y < $count);
705: if (! defined($min_x) || $answer < $min_x) {
706: $min_x = $answer;
707: }
708: if (! defined($max_x) || $answer > $max_x) {
709: $max_x = $answer;
710: }
1.78 matthew 711: }
1.103 matthew 712: #
1.106 matthew 713: my $min_max_difference = $max_x - $min_x;
714: if (! defined($min_max_difference) || $min_max_difference == 0) {
715: $min_max_difference = 1;
716: }
717: my $h_scale = ($width-10)/$min_max_difference;
1.103 matthew 718: #
1.78 matthew 719: my $ticscale = 5;
720: if ($max_y * $ticscale > $height/2) {
721: $ticscale = int($height/2/$max_y);
722: $ticscale = 1 if ($ticscale < 1);
723: }
724: #
725: # Create the plot
726: my $plot =
727: qq{<drawimage width="$width" height="$height" bgcolor="transparent" >};
1.103 matthew 728: while (my ($answer,$count) = each(%$data)) {
729: my $xloc = 5+$h_scale*($answer - $min_x);
730: my $top = $height/2-$count*$ticscale;
731: my $bottom = $height/2+$count*$ticscale;
732: $plot .= &line($xloc,$top,$xloc,$bottom,'888888',1);
1.78 matthew 733: }
734: #
735: # Put the scale on last to ensure it is on top of the data.
1.103 matthew 736: if ($min_x < 0 && $max_x > 0) {
737: my $circle_x = 5+$h_scale*abs($min_x); # '0' in data coordinates
1.78 matthew 738: my $r = 4;
739: $plot .= &line(5,$height/2,$circle_x-$r,$height/2,'000000',1);
740: $plot .= &circle($circle_x,$height/2,$r+1,'000000');
741: $plot .= &line($circle_x+$r,$height/2,$width-5,$height/2,'000000',1);
742: } else {
743: $plot .= &line(5,$height/2,$width-5,$height/2,'000000',1);
744: }
745: $plot .= '</drawimage>';
746: my $plotresult = &Apache::lonxml::xmlparse($r,'web',$plot);
747: my $result = '<table>'.
748: '<tr><td colspan="3" align="center">'.
1.103 matthew 749: '<font size="+2">'.&mt('Distribution of correct answers').'</font>'.
750: '<br />'.&mt('[_1] students, [_2] distinct correct answers',
751: $n,scalar(keys(%$data))).
752: '<br />'.&mt('Maximum number of coinciding values: [_1]',$max_y).
1.78 matthew 753: '</td></tr>'.
754: '<tr>'.
1.103 matthew 755: '<td valign="center">'.$min_x.'</td>'.
1.78 matthew 756: '<td>'.$plotresult.'</td>'.
1.103 matthew 757: '<td valign="center">'.$max_x.'</td>'.
1.78 matthew 758: '</tr>'.
759: '</table>';
760: return $result;
761: }
762:
763: ##
764: ## Helper subroutines for <drawimage>.
765: ## These should probably go somewhere more suitable soon.
766: sub line {
767: my ($x1,$y1,$x2,$y2,$color,$thickness) = @_;
1.103 matthew 768: return qq{<line x1="$x1" y1="$y1" x2="$x2" y2="$y2" color="$color" thickness="$thickness" />};
1.78 matthew 769: }
770:
1.82 matthew 771: sub text {
772: my ($x,$y,$color,$text,$font,$direction) = @_;
773: if (! defined($font) || $font !~ /^(tiny|small|medium|large|giant)$/) {
774: $font = 'medium';
775: }
776: if (! defined($direction) || $direction ne 'vertical') {
777: $direction = '';
778: }
779: return qq{<text x="$x" y="$y" color="$color" font="$font" direction="$direction" >$text</text>};
780: }
781:
1.78 matthew 782: sub rectangle {
783: my ($x1,$y1,$x2,$y2,$color,$thickness,$filled) = @_;
784: return qq{<rectangle x1="$x1" y1="$y1" x2="$x2" y2="$y2" color="$color" thickness="$thickness" filled="$filled" />};
785: }
786:
787: sub arc {
788: my ($x,$y,$width,$height,$start,$end,$color,$thickness,$filled)=@_;
789: return qq{<arc x="$x" y="$y" width="$width" height="$height" start="$start" end="$end" color="$color" thickness="$thickness" filled="$filled" />};
790: }
791:
792: sub circle {
793: my ($x,$y,$radius,$color,$thickness,$filled)=@_;
794: return &arc($x,$y,$radius,$radius,0,360,$color,$thickness,$filled);
1.68 matthew 795: }
796:
1.47 matthew 797: #########################################################
798: #########################################################
799: ##
800: ## Radio Response Routines
801: ##
802: #########################################################
803: #########################################################
1.97 matthew 804: sub radio_response_analysis {
1.94 matthew 805: my ($r,$problem,$problem_analysis,$students) = @_;
1.97 matthew 806: #
1.120 albertel 807: if ($env{'form.AnalyzeOver'} !~ /^(tries|time)$/) {
1.94 matthew 808: $r->print('Bad request');
809: }
1.97 matthew 810: #
1.94 matthew 811: my ($resource,$partid,$respid) = ($problem->{'resource'},
812: $problem->{'part'},
813: $problem->{'respid'});
814: #
815: my $analysis_html;
816: my $foildata = $problem_analysis->{'_Foils'};
817: my ($table,$foils,$concepts) = &build_foil_index($problem_analysis);
1.106 matthew 818: if (! defined($concepts)) {
819: $concepts = [];
820: }
1.97 matthew 821: #
1.98 matthew 822: my %true_foils;
1.97 matthew 823: my $num_true = 0;
1.98 matthew 824: if (! $problem_analysis->{'answercomputed'}) {
825: foreach my $foil (@$foils) {
826: if ($foildata->{$foil}->{'value'} eq 'true') {
827: $true_foils{$foil}++;
828: }
1.97 matthew 829: }
1.98 matthew 830: $num_true = scalar(keys(%true_foils));
1.97 matthew 831: }
832: #
1.94 matthew 833: $analysis_html .= $table;
834: # Gather student data
835: my $response_data = &Apache::loncoursedata::get_response_data
1.118 matthew 836: ([&Apache::lonstatistics::get_selected_sections()],
1.127 raeburn 837: [&Apache::lonstatistics::get_selected_groups()],
1.94 matthew 838: $Apache::lonstatistics::enrollment_status,
1.116 matthew 839: $resource->symb,$respid);
1.94 matthew 840: my $correct; # either a hash reference or a scalar
841: if ($problem_analysis->{'answercomputed'} || scalar(@$concepts) > 1) {
842: # This takes a while for large classes...
843: &Apache::lonstathelpers::GetStudentAnswers($r,$problem,$students,
844: 'Statistics',
845: 'stats_status');
846: foreach my $student (@$students) {
847: my ($idx,@remainder) = split('&',$student->{'answer'});
848: my ($answer) = ($remainder[$idx]=~/^(.*)=([^=]*)$/);
849: $correct->{$student->{'username'}.':'.$student->{'domain'}}=
1.126 www 850: &unescape($answer);
1.94 matthew 851: }
852: } else {
853: foreach my $foil (keys(%$foildata)) {
854: if ($foildata->{$foil}->{'value'} eq 'true') {
855: $correct = $foildata->{$foil}->{'name'};
856: }
857: }
858: }
1.97 matthew 859: #
860: if (! defined($response_data) || ref($response_data) ne 'ARRAY' ) {
1.132 bisitz 861: $analysis_html = '<div class="LC_warning">'
862: .&mt('There is no submission data for this resource.')
863: .'</div>';
1.94 matthew 864: $r->print($analysis_html);
865: return;
866: }
867: #
868: $analysis_html.='<table>';
1.120 albertel 869: for (my $plot_num = 1;$plot_num<=$env{'form.NumPlots'};$plot_num++) {
1.94 matthew 870: # classify data ->correct foil -> selected foil
1.97 matthew 871: my ($restriction_function,
872: $correct_foil_title,$incorrect_foil_title,
873: $pre_graph_text,$post_graph_text,
874: $no_data_text,@extra_data);
1.120 albertel 875: if ($env{'form.AnalyzeOver'} eq 'tries') {
1.97 matthew 876: $restriction_function = sub {($_[0]->{'tries'} == $plot_num?1:0)};
1.144 bisitz 877: $correct_foil_title = &mt('Attempt [_1]',$plot_num);
878: $incorrect_foil_title = &mt('Attempt [_1]',$plot_num);
1.97 matthew 879: $pre_graph_text =
880: 'Attempt [_1], [_2] submissions, [_3] correct, [_4] incorrect';
881: $post_graph_text = '';
882: $no_data_text = 'No data exists for attempt [_1]';
1.120 albertel 883: } elsif ($env{'form.AnalyzeOver'} eq 'time') {
1.97 matthew 884: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
885: ('startdate_'.$plot_num);
886: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
887: ('enddate_'.$plot_num);
888: ($starttime,$endtime) = &ensure_start_end_times
889: ($starttime,$endtime,
890: &get_time_from_row($response_data->[0]),
891: &get_time_from_row($response_data->[-1]),
892: $plot_num);
893: $pre_graph_text =
1.132 bisitz 894: 'Data from [_6] to [_7]'
895: .'<br />'
896: .'[_2] submissions from [_5] students, [_3] correct, [_4] incorrect';
1.97 matthew 897: $extra_data[0] = &Apache::lonlocal::locallocaltime($starttime);
898: $extra_data[1] = &Apache::lonlocal::locallocaltime($endtime);
899: #
900: $post_graph_text =
901: &mt('Start time: [_1]',
902: &Apache::lonhtmlcommon::date_setter
903: ('Statistics','startdate_'.$plot_num,$starttime)).
904: '<br />'.
905: &mt('End time: [_1]',
906: &Apache::lonhtmlcommon::date_setter
907: ('Statistics','enddate_'.$plot_num,$endtime));
908: $restriction_function =
909: sub {
910: my $t = $_[0]->{'timestamp'};
911: if ($t >= $starttime && $t < $endtime) {
912: return 1;
913: } else {
914: return 0;
915: }
916: };
917: $no_data_text = 'No data for [_5] to [_6]';
918: }
919: my $foil_choice_data =
1.103 matthew 920: &classify_response_data($response_data,$correct,
921: $restriction_function);
1.97 matthew 922: # &Apache::lonstathelpers::log_hash_ref($foil_choice_data);
1.94 matthew 923: my $answers;
924: if (ref($correct)) {
925: my %tmp;
926: foreach my $foil (values(%$correct)) {
927: $tmp{$foil}++;
928: }
929: $answers = [keys(%tmp)];
930: } else {
931: $answers = [$correct];
932: }
933: # Concept Plot
934: my $concept_plot = '';
935: if (scalar(@$concepts) > 1) {
1.144 bisitz 936: my $title = &mt('Correct Concepts');
1.94 matthew 937: $concept_plot = &RR_concept_plot($concepts,$foil_choice_data,
1.144 bisitz 938: $title);
1.94 matthew 939: }
940: # % Choosing plot
941: my $choice_plot = &RR_create_percent_selected_plot
1.97 matthew 942: ($concepts,$foils,$foil_choice_data,$correct_foil_title);
1.94 matthew 943: # for each correct foil, how did they mark it? (stacked bar graph)
1.97 matthew 944: my ($stacked_plot,$count_by_foil);
945: if ($problem_analysis->{'answercomputed'} || $num_true > 1) {
946: ($stacked_plot,$count_by_foil) =
947: &RR_create_stacked_selection_plot($foils,$foil_choice_data,
1.98 matthew 948: $incorrect_foil_title,
949: \%true_foils);
1.97 matthew 950: }
1.94 matthew 951: #
952: if ($concept_plot ne '' ||
1.97 matthew 953: $choice_plot ne '' ||
1.94 matthew 954: $stacked_plot ne '') {
1.97 matthew 955: my $correct = $foil_choice_data->{'_correct'};
1.119 matthew 956: $correct |= 0;
957: my $incorrect = $foil_choice_data->{'_count'}-$correct;
1.97 matthew 958: $analysis_html.= '<tr><td colspan="4" align="center">'.
959: '<font size="+1">'.
960: &mt($pre_graph_text,
961: $plot_num,$foil_choice_data->{'_count'},
1.102 matthew 962: $correct,
1.119 matthew 963: $incorrect,
1.102 matthew 964: $foil_choice_data->{'_students'},
1.97 matthew 965: @extra_data).
966: '</td></tr>'.$/;
1.94 matthew 967: $analysis_html.=
968: '<tr>'.
969: '<td>'.$concept_plot.'</td>'.
970: '<td>'.$choice_plot.'</td>';
971: if ($stacked_plot ne '') {
972: $analysis_html .=
1.97 matthew 973: '<td>'.$stacked_plot.'</td>'.
974: '<td>'.&build_foil_key($foils,$count_by_foil).'</td>';
1.94 matthew 975: } else {
976: $analysis_html .= ('<td></td>'x2);
977: }
978: $analysis_html.='</tr>'.$/;
1.97 matthew 979: if (defined($post_graph_text)) {
980: $analysis_html.= '<tr><td colspan="4" align="center">'.
981: $post_graph_text.'</td></tr>'.$/;
982: }
983: } elsif ($no_data_text ne '') {
984: $analysis_html.='<tr><td colspan="4" align="center">'.
1.132 bisitz 985: '<div class="LC_warning">'.
1.97 matthew 986: &mt($no_data_text,
987: $plot_num,$foil_choice_data->{'_count'},
988: $correct,
989: $foil_choice_data->{'_count'}-$correct,
1.132 bisitz 990: @extra_data).
991: '</div>';
1.97 matthew 992: if (defined($post_graph_text)) {
993: $analysis_html.='<br />'.$post_graph_text;
994: }
995: $analysis_html.='</td></tr>'.$/;
1.94 matthew 996: }
1.97 matthew 997: } # end of loop for plots
1.94 matthew 998: $analysis_html.='</table>';
999: $r->print($analysis_html);
1000: }
1001:
1.97 matthew 1002: sub ensure_start_end_times {
1003: my ($start,$end,$first,$last,$plot_num) = @_;
1004: if (! defined($start) || ! defined($end)) {
1005: my $sec_in_day = 86400;
1006: my ($sday,$smon,$syear) =
1007: (localtime($last - $sec_in_day*($plot_num-1)))[3..5];
1008: $start = &Time::Local::timelocal(0,0,0,$sday,$smon,$syear);
1009: $end = $start + $sec_in_day;
1.120 albertel 1010: if ($plot_num == $env{'form.NumPlots'}) {
1.97 matthew 1011: $start = $first;
1012: }
1013: }
1014: return ($start,$end);
1015: }
1.94 matthew 1016:
1017: sub RR_concept_plot {
1018: my ($concepts,$foil_data,$title) = @_;
1019: #
1020: my %correct_by_concept;
1021: my %incorrect_by_concept;
1022: my %true;
1023: foreach my $concept (@$concepts) {
1024: foreach my $foil (@{$concept->{'foils'}}) {
1025: next if (! exists($foil_data->{$foil}));
1026: foreach my $choice (keys(%{$foil_data->{$foil}})) {
1027: if ($choice eq $foil) {
1028: $correct_by_concept{$concept->{'name'}} +=
1029: $foil_data->{$foil}->{$choice};
1030: } else {
1031: $incorrect_by_concept{$concept->{'name'}} +=
1032: $foil_data->{$foil}->{$choice};
1033: }
1034: }
1035: }
1036: }
1037: #
1038: # need arrays for incorrect and correct because we want to use different
1039: # colors for them
1040: my @correct;
1041: #
1042: my $total =0;
1043: for (my $i=0;$i<scalar(@$concepts);$i++) {
1044: my $concept = $concepts->[$i];
1045: $correct[$i] = $correct_by_concept{$concept->{'name'}};
1046: $total += $correct_by_concept{$concept->{'name'}}+
1047: $incorrect_by_concept{$concept->{'name'}};
1048: }
1049: if ($total == 0) { return ''; };
1050: for (my $i=0;$i<=$#correct;$i++) {
1051: $correct[$i] = sprintf('%0f',$correct[$i]/$total*100);
1052: }
1.144 bisitz 1053: my $xlabel = &mt('concept');
1054: my $ylabel = &mt('Percent Choosing');
1.94 matthew 1055: my $plot= &Apache::loncommon::DrawBarGraph($title,
1056: $xlabel,
1.144 bisitz 1057: $ylabel,
1.94 matthew 1058: 100,
1059: ['#33ff00','#ff3300'],
1060: undef,
1061: \@correct);
1062: return $plot;
1063: }
1064:
1065: sub RR_create_percent_selected_plot {
1.97 matthew 1066: my ($concepts,$foils,$foil_data,$title) = @_;
1.94 matthew 1067: #
1.99 matthew 1068: if ($foil_data->{'_count'} == 0) { return ''; };
1069: my %correct_selections;
1070: my %incorrect_selections;
1.94 matthew 1071: foreach my $foil (@$foils) {
1.101 matthew 1072: # foil_data has format $foil_data->{true_foil}->{selected foil}=count
1.94 matthew 1073: next if (! exists($foil_data->{$foil}));
1074: while (my ($f,$count)= each(%{$foil_data->{$foil}})) {
1.99 matthew 1075: if ($f eq $foil) {
1076: $correct_selections{$foil} += $count;
1077: } else {
1.101 matthew 1078: $incorrect_selections{$f} += $count;
1.99 matthew 1079: }
1.94 matthew 1080: }
1081: }
1082: #
1083: # need arrays for incorrect and correct because we want to use different
1084: # colors for them
1085: my @correct;
1086: my @incorrect;
1087: #
1.99 matthew 1088: my $total = $foil_data->{'_count'};
1.94 matthew 1089: for (my $i=0;$i<scalar(@$foils);$i++) {
1090: my $foil = $foils->[$i];
1.99 matthew 1091: $correct[$i] = $correct_selections{$foil};
1092: $incorrect[$i] = $incorrect_selections{$foil};
1.94 matthew 1093: }
1094: for (my $i=0;$i<=$#correct;$i++) {
1.99 matthew 1095: $correct[$i] = sprintf('%2f',$correct[$i]/$total*100);
1.94 matthew 1096: }
1097: for (my $i=0;$i<=$#incorrect;$i++) {
1.99 matthew 1098: $incorrect[$i] = sprintf('%2f',$incorrect[$i]/$total*100);
1.94 matthew 1099: }
1.97 matthew 1100: #
1101: # Put a blank in the data sets between concepts, if there are concepts
1102: my @labels;
1103: if (defined($concepts) && scalar(@$concepts) > 1) {
1104: my @new_correct;
1105: my @new_incorrect;
1106: my $foil_count = 0;
1107: foreach my $concept (@$concepts) {
1108: foreach (@{$concept->{'foils'}}) {
1109: push(@new_correct, $correct[$foil_count]);
1110: push(@new_incorrect,$incorrect[$foil_count]);
1111: push(@labels,++$foil_count);
1112: }
1113: push(@new_correct,'');
1114: push(@new_incorrect,'');
1115: push(@labels,'');
1116: }
1117: @correct = @new_correct;
1118: @incorrect = @new_incorrect;
1119: } else {
1120: @labels = (1 .. scalar(@correct));
1121: }
1122: #
1.144 bisitz 1123: my $xlabel = &mt('foil chosen');
1124: my $ylabel = &mt('Percent Choosing');
1.94 matthew 1125: my $plot= &Apache::loncommon::DrawBarGraph($title,
1126: $xlabel,
1.144 bisitz 1127: $ylabel,
1.94 matthew 1128: 100,
1129: ['#33ff00','#ff3300'],
1.97 matthew 1130: \@labels,
1.94 matthew 1131: \@correct,
1132: \@incorrect);
1133: return $plot;
1134: }
1135:
1136: sub RR_create_stacked_selection_plot {
1.98 matthew 1137: my ($foils,$foil_data,$title,$true_foils)=@_;
1.94 matthew 1138: #
1.97 matthew 1139: my @dataset; # array of array refs - multicolor rows $datasets[row]->[col]
1.94 matthew 1140: my @labels;
1.97 matthew 1141: my $count;
1142: my %column; # maps foil name to column in @datasets
1.94 matthew 1143: for (my $i=0;$i<scalar(@$foils);$i++) {
1.98 matthew 1144: my $foil = $foils->[$i];
1145: if (defined($true_foils) && scalar(keys(%$true_foils)) > 0 ) {
1146: next if (! $true_foils->{$foil} );
1147: push(@labels,$i+1);
1148: } else {
1149: next if (! exists($foil_data->{$foil}));
1150: push(@labels,$i+1);
1151: }
1.94 matthew 1152: next if (! exists($foil_data->{$foils->[$i]}));
1.98 matthew 1153: $column{$foil}= $count++;
1.94 matthew 1154: for (my $j=0;$j<scalar(@$foils);$j++) {
1155: my $value = 0;
1156: if ($i != $j ) {
1.98 matthew 1157: $value += $foil_data->{$foil}->{$foils->[$j]};
1.94 matthew 1158: }
1.98 matthew 1159: $dataset[$j]->[$column{$foil}]=$value;
1.94 matthew 1160: }
1161: }
1162: #
1163: return '' if (! scalar(keys(%column)));
1164: #
1165: my $grand_total = 0;
1166: my %count_per_foil;
1167: while (my ($foil,$bar) = each (%column)) {
1168: my $bar_total = 0;
1169: for (my $j=0;$j<scalar(@dataset);$j++) {
1170: $bar_total += $dataset[$j]->[$bar];
1171: }
1172: next if ($bar_total == 0);
1173: for (my $j=0;$j<scalar(@dataset);$j++) {
1174: $dataset[$j]->[$bar] =
1175: sprintf('%2f',$dataset[$j]->[$bar]/$bar_total * 100);
1176: }
1.97 matthew 1177: $count_per_foil{$foil}=' ( '.$bar_total.' )';
1.94 matthew 1178: $grand_total += $bar_total;
1179: }
1180: if ($grand_total == 0) {
1181: return ('',undef);
1182: }
1183: my @empty_row = ();
1184: foreach (@{$dataset[0]}) {
1185: push(@empty_row,0);
1186: }
1187: #
1.144 bisitz 1188: my $xlabel = &mt('Correct Foil');
1189: my $ylabel = &mt('foils chosen Incorrectly');
1.94 matthew 1190: my $graph = &Apache::loncommon::DrawBarGraph
1.144 bisitz 1191: ($title,$xlabel,$ylabel,
1.94 matthew 1192: 100,$plotcolors,\@labels,\@empty_row,@dataset);
1193: return ($graph,\%count_per_foil);
1194: }
1195:
1.103 matthew 1196:
1197: #########################################################
1198: #########################################################
1199: ##
1200: ## Misc routines
1201: ##
1202: #########################################################
1203: #########################################################
1204:
1.94 matthew 1205: # if $correct is a hash ref, it is assumed to be indexed by student names.
1206: # the values are assumed to be hash refs with a key of 'answer'.
1.103 matthew 1207: sub classify_response_data {
1.94 matthew 1208: my ($full_row_data,$correct,$function) = @_;
1209: my %submission_data;
1.102 matthew 1210: my %students;
1.103 matthew 1211: my $max=0;
1.94 matthew 1212: foreach my $row (@$full_row_data) {
1213: my %subm = &hashify_attempt($row);
1214: if (ref($correct) eq 'HASH') {
1215: $subm{'correct'} = $correct->{$subm{'student'}};
1216: } else {
1217: $subm{'correct'} = $correct;
1218: }
1219: $subm{'submission'} =~ s/=\d+\s*$//;
1220: if (&$function(\%subm)) {
1.102 matthew 1221: $students{$subm{'student'}}++;
1.97 matthew 1222: $submission_data{'_count'}++;
1223: if (&submission_is_correct($subm{'award'})) {
1224: $submission_data{'_correct'}++;
1225: }
1.103 matthew 1226:
1227: if($max<++$submission_data{$subm{'correct'}}->{$subm{'submission'}}) {
1228: $max=$submission_data{$subm{'correct'}}->{$subm{'submission'}};
1229: }
1.94 matthew 1230: }
1231: }
1.103 matthew 1232: $submission_data{'_max'} = $max;
1.102 matthew 1233: $submission_data{'_students'}=scalar(keys(%students));
1.94 matthew 1234: return \%submission_data;
1235: }
1236:
1237:
1.33 matthew 1238: #########################################################
1239: #########################################################
1240: ##
1.46 matthew 1241: ## Option Response Routines
1.33 matthew 1242: ##
1243: #########################################################
1244: #########################################################
1.46 matthew 1245: sub OptionResponseAnalysis {
1.88 matthew 1246: my ($r,$problem,$problem_data,$Students) = @_;
1.56 matthew 1247: my ($resource,$respid) = ($problem->{'resource'},
1248: $problem->{'respid'});
1249: # Note: part data is not needed.
1.82 matthew 1250: my $PerformanceData = &Apache::loncoursedata::get_response_data
1.118 matthew 1251: ([&Apache::lonstatistics::get_selected_sections()],
1.127 raeburn 1252: [&Apache::lonstatistics::get_selected_groups()],
1.82 matthew 1253: $Apache::lonstatistics::enrollment_status,
1.116 matthew 1254: $resource->symb,$respid);
1.46 matthew 1255: if (! defined($PerformanceData) ||
1256: ref($PerformanceData) ne 'ARRAY' ) {
1.132 bisitz 1257: $r->print('<div class="LC_warning">'
1258: .&mt('There is no student data for this problem.')
1259: .'</div>'
1260: );
1.46 matthew 1261: } else {
1262: $r->rflush();
1.120 albertel 1263: if ($env{'form.AnalyzeOver'} eq 'tries') {
1.111 matthew 1264: my $analysis_html = &OR_tries_analysis($r,
1265: $PerformanceData,
1266: $problem_data);
1267: $r->print($analysis_html);
1268: $r->rflush();
1.120 albertel 1269: } elsif ($env{'form.AnalyzeOver'} eq 'time') {
1.111 matthew 1270: my $analysis_html = &OR_time_analysis($PerformanceData,
1271: $problem_data);
1272: $r->print($analysis_html);
1.46 matthew 1273: $r->rflush();
1.39 matthew 1274: } else {
1.145 bisitz 1275: $r->print('<div class="LC_warning">'
1.132 bisitz 1276: .&mt('The analysis you have selected is not supported at this time.')
1277: .'</div>'
1278: );
1.36 matthew 1279: }
1.39 matthew 1280: }
1281: }
1282:
1.33 matthew 1283: #########################################################
1.46 matthew 1284: #
1.94 matthew 1285: # Option Response: tries Analysis
1.46 matthew 1286: #
1.33 matthew 1287: #########################################################
1.57 matthew 1288: sub OR_tries_analysis {
1.43 matthew 1289: my ($r,$PerformanceData,$ORdata) = @_;
1.33 matthew 1290: my $mintries = 1;
1.120 albertel 1291: my $maxtries = $env{'form.NumPlots'};
1.39 matthew 1292: my ($table,$Foils,$Concepts) = &build_foil_index($ORdata);
1.107 matthew 1293: if (! defined($Concepts)) {
1294: $Concepts = [];
1295: }
1.88 matthew 1296: my %response_data = &OR_analyze_by_tries($r,$PerformanceData,
1.36 matthew 1297: $mintries,$maxtries);
1.42 matthew 1298: my $analysis = '';
1.31 matthew 1299: #
1.88 matthew 1300: # Compute the data necessary to make the plots
1301: my @foil_plot;
1302: my @concept_data;
1303: for (my $j=0;$j<=scalar(@$Concepts);$j++) {
1304: my $concept = $Concepts->[$j];
1.75 matthew 1305: foreach my $foilid (@{$concept->{'foils'}}) {
1.76 matthew 1306: for (my $try=$mintries;$try<=$maxtries;$try++) {
1.88 matthew 1307: # concept analysis data
1.93 matthew 1308: $concept_data[$j]->[$try]->{'_correct'} +=
1.88 matthew 1309: $response_data{$foilid}->[$try]->{'_correct'};
1.93 matthew 1310: $concept_data[$j]->[$try]->{'_total'} +=
1.88 matthew 1311: $response_data{$foilid}->[$try]->{'_total'};
1312: #
1313: # foil analysis data
1314: if ($response_data{$foilid}->[$try]->{'_total'} == 0) {
1315: push(@{$foil_plot[$try]->{'_correct'}},0);
1.42 matthew 1316: } else {
1.88 matthew 1317: push(@{$foil_plot[$try]->{'_correct'}},
1318: 100*$response_data{$foilid}->[$try]->{'_correct'}/
1319: $response_data{$foilid}->[$try]->{'_total'});
1.75 matthew 1320: }
1321: foreach my $option (@{$ORdata->{'_Options'}}) {
1.88 matthew 1322: push(@{$foil_plot[$try]->{'_total'}},
1323: $response_data{$foilid}->[$try]->{'_total'});
1324: if ($response_data{$foilid}->[$try]->{'_total'} == 0) {
1325: push (@{$foil_plot[$try]->{$option}},0);
1.39 matthew 1326: } else {
1.88 matthew 1327: if ($response_data{$foilid}->[$try]->{'_total'} ==
1328: $response_data{$foilid}->[$try]->{'_correct'}) {
1329: push(@{$foil_plot[$try]->{$option}},0);
1.75 matthew 1330: } else {
1.88 matthew 1331: push (@{$foil_plot[$try]->{$option}},
1.76 matthew 1332: 100 *
1.88 matthew 1333: $response_data{$foilid}->[$try]->{$option} /
1334: ($response_data{$foilid}->[$try]->{'_total'}
1.76 matthew 1335: -
1.88 matthew 1336: $response_data{$foilid}->[$try]->{'_correct'}
1.76 matthew 1337: ));
1.75 matthew 1338: }
1.39 matthew 1339: }
1.76 matthew 1340: } # End of foreach my $option
1.36 matthew 1341: }
1.76 matthew 1342: } # End of foreach my $foilid
1.88 matthew 1343: } # End of concept loops
1.42 matthew 1344: #
1345: # Build a table for the plots
1.96 matthew 1346: my $analysis_html = "<br /><table>\n";
1.75 matthew 1347: my $optionkey = &build_option_index($ORdata);
1.88 matthew 1348: my $num_concepts = 1;
1349: if (defined($Concepts)) { $num_concepts = scalar(@$Concepts); }
1350: #
1.75 matthew 1351: for (my $try=$mintries;$try<=$maxtries;$try++) {
1.92 matthew 1352: if (! defined($response_data{'_total'}->[$try]) ||
1353: $response_data{'_total'}->[$try] == 0) {
1354: if ($try > 1) {
1.132 bisitz 1355: $analysis_html.= '<tr><td colspan="4">'
1356: .'<div class="LC_info">'
1.136 hauer 1357: .&mt('None of the selected students attempted the problem more than [quant,_1,time].'
1.132 bisitz 1358: ,$try-1)
1359: .'</div>'
1360: .'</td></tr>';
1.92 matthew 1361: } else {
1.132 bisitz 1362: $analysis_html.= '<tr><td colspan="4">'
1363: .'<div class="LC_info">'
1364: .&mt('None of the selected students have attempted the problem.')
1365: .'</div>'
1366: .'</td></tr>';
1.92 matthew 1367: }
1368: last;
1369: }
1.88 matthew 1370: my $concept_graph='';
1371: if ($num_concepts > 1) {
1372: #
1373: # Create concept plot
1374: my @concept_plot_data;
1375: for (my $j=0;$j<=$#concept_data;$j++) {
1.93 matthew 1376: my $total = $concept_data[$j]->[$try]->{'_total'};
1.88 matthew 1377: if ($total == 0) {
1378: $concept_plot_data[$j] = 0;
1379: } else {
1380: $concept_plot_data[$j] = 100 *
1381: sprintf('%0.3f',
1.93 matthew 1382: $concept_data[$j]->[$try]->{'_correct'} /
1383: $total);
1.88 matthew 1384: }
1385: }
1386: #
1.144 bisitz 1387: my %lt = &Apache::lonlocal::texthash(
1388: 'title' => 'Correct Concepts',
1389: 'xlabel' => 'Concept Number',
1390: 'ylabel' => 'Percent Correct');
1.88 matthew 1391: $concept_graph = &Apache::loncommon::DrawBarGraph
1.144 bisitz 1392: ($lt{'title'},$lt{'xlabel'},$lt{'ylabel'},
1.105 matthew 1393: 100,$plotcolors,undef,\@concept_plot_data,{xskip=>1});
1.88 matthew 1394: }
1395: #
1396: # Create Foil Plots
1.96 matthew 1397: my $data_count = $response_data{'_total'}->[$try];
1398: my $correct = $response_data{'_correct'}->[$try];
1.119 matthew 1399: $correct |= 0;
1.42 matthew 1400: my @Datasets;
1.48 matthew 1401: foreach my $option ('_correct',@{$ORdata->{'_Options'}}) {
1.88 matthew 1402: next if (! exists($foil_plot[$try]->{$option}));
1403: push(@Datasets,$foil_plot[$try]->{$option});
1.42 matthew 1404: }
1.76 matthew 1405: #
1406: # Put a blank in the data set between concepts
1407: for (my $set =0;$set<=$#Datasets;$set++) {
1408: my @Data = @{$Datasets[$set]};
1409: my $idx = 0;
1410: foreach my $concept (@{$Concepts}) {
1411: foreach my $foilid (@{$concept->{'foils'}}) {
1412: $Datasets[$set]->[$idx++]=shift(@Data);
1413: }
1414: if ($concept->{'name'} ne $Concepts->[-1]->{'name'}) {
1415: $Datasets[$set]->[$idx++] = 0;
1416: }
1417: }
1418: }
1419: #
1420: # Set up the labels needed for the bar graph
1421: my @Labels;
1422: my $idx = 1;
1423: foreach my $concept (@{$Concepts}) {
1424: foreach my $foilid (@{$concept->{'foils'}}) {
1425: push(@Labels,$idx++);
1426: }
1427: push(@Labels,'');
1428: }
1429: #
1.144 bisitz 1430: my %lt = &Apache::lonlocal::texthash(
1431: 'title' => 'Correct Statements',
1432: 'xlabel' => 'Statement',
1433: 'ylabel' => '% Answered Correct');
1.88 matthew 1434: my $correct_graph = &Apache::loncommon::DrawBarGraph
1.144 bisitz 1435: ($lt{'title'},$lt{'xlabel'},$lt{'ylabel'},
1.105 matthew 1436: 100,$plotcolors,\@Labels,$Datasets[0],{xskip=>1});
1.75 matthew 1437:
1438: #
1439: #
1.57 matthew 1440: next if (! defined($Datasets[0]));
1.42 matthew 1441: for (my $i=0; $i< scalar(@{$Datasets[0]});$i++) {
1442: $Datasets[0]->[$i]=0;
1443: }
1.96 matthew 1444: my $count = $response_data{'_total'}->[$try] -
1.88 matthew 1445: $response_data{'_correct'}->[$try];
1.144 bisitz 1446: %lt = &Apache::lonlocal::texthash(
1447: 'title' => 'Incorrect Statements',
1448: 'xlabel' => 'Statement',
1449: 'ylabel' => '% Chosen Incorrectly');
1.88 matthew 1450: my $incorrect_graph = &Apache::loncommon::DrawBarGraph
1.144 bisitz 1451: ($lt{'title'},$lt{'xlabel'},$lt{'ylabel'},
1.105 matthew 1452: 100,$plotcolors,\@Labels,@Datasets,{xskip=>1});
1.88 matthew 1453: $analysis_html.=
1.96 matthew 1454: '<tr><td colspan="4" align="center">'.
1455: '<font size="+1">'.
1456: &mt('Attempt [_1], [_2] submissions, [_3] correct, [_4] incorrect',
1457: $try,$data_count,$correct,$data_count-$correct).
1458: '</font>'.'</td></tr>'.$/.
1.88 matthew 1459: '<tr>'.
1460: '<td>'.$concept_graph.'</td>'.
1461: '<td>'.$correct_graph.'</td>'.
1462: '<td>'.$incorrect_graph.'</td>'.
1463: '<td>'.$optionkey.'<td>'.
1464: '</tr>'.$/;
1.42 matthew 1465: }
1466: $analysis_html .= "</table>\n";
1.88 matthew 1467: $table .= $analysis_html;
1468: return $table;
1.25 matthew 1469: }
1470:
1.57 matthew 1471: sub OR_analyze_by_tries {
1.43 matthew 1472: my ($r,$PerformanceData,$mintries,$maxtries) = @_;
1.25 matthew 1473: my %Trydata;
1474: $mintries = 1 if (! defined($mintries) || $mintries < 1);
1475: $maxtries = $mintries if (! defined($maxtries) || $maxtries < $mintries);
1.96 matthew 1476: my @students;
1.26 matthew 1477: foreach my $row (@$PerformanceData) {
1478: next if (! defined($row));
1.47 matthew 1479: my $tries = &get_tries_from_row($row);
1.46 matthew 1480: my %Row = &Process_OR_Row($row);
1.43 matthew 1481: next if (! %Row);
1.96 matthew 1482: my $student_id = $row->[&Apache::loncoursedata::RD_student_id()];
1483: $students[$tries]->{$student_id}++;
1.42 matthew 1484: while (my ($foilid,$href) = each(%Row)) {
1485: if (! ref($href)) {
1486: $Trydata{$foilid}->[$tries] += $href;
1487: next;
1488: }
1489: while (my ($option,$value) = each(%$href)) {
1490: $Trydata{$foilid}->[$tries]->{$option}+=$value;
1.25 matthew 1491: }
1492: }
1493: }
1.96 matthew 1494: for (my $try=$mintries;$try<=$maxtries;$try++) {
1495: $Trydata{'_studentcount'}->[$try] = scalar(keys(%{$students[$try]}));
1496: }
1.25 matthew 1497: return %Trydata;
1498: }
1499:
1.33 matthew 1500: #########################################################
1.46 matthew 1501: #
1502: # Option Response: Time Analysis
1503: #
1.33 matthew 1504: #########################################################
1.57 matthew 1505: sub OR_time_analysis {
1.88 matthew 1506: my ($performance_data,$ORdata) = @_;
1.42 matthew 1507: my ($table,$Foils,$Concepts) = &build_foil_index($ORdata);
1.88 matthew 1508: my $foilkey = &build_option_index($ORdata);
1509: my $num_concepts = 1;
1510: if (defined($Concepts)) { $num_concepts = scalar(@$Concepts); }
1511: #
1512: if ($num_concepts < 2) {
1.144 bisitz 1513: $table = '<p class="LC_info">'.
1514: &mt('Not enough data for concept analysis.'.
1515: ' Performing Foil Analysis instead.').
1516: '</p>'.
1517: $table;
1.42 matthew 1518: }
1.88 matthew 1519: #
1.120 albertel 1520: my $num_plots = $env{'form.NumPlots'};
1.88 matthew 1521: my $num_data = scalar(@$performance_data)-1;
1.42 matthew 1522: #
1.96 matthew 1523: my $current_index;
1.37 matthew 1524: $table .= "<table>\n";
1.33 matthew 1525: for (my $i=0;$i<$num_plots;$i++) {
1.42 matthew 1526: ##
1.34 matthew 1527: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
1528: ('startdate_'.$i);
1529: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
1530: ('enddate_'.$i);
1531: if (! defined($starttime) || ! defined($endtime)) {
1.42 matthew 1532: my $sec_in_day = 86400;
1.88 matthew 1533: my $last_sub_time = &get_time_from_row($performance_data->[-1]);
1.96 matthew 1534: my ($sday,$smon,$syear) =
1535: (localtime($last_sub_time - $sec_in_day*$i))[3..5];
1.42 matthew 1536: $starttime = &Time::Local::timelocal(0,0,0,$sday,$smon,$syear);
1537: $endtime = $starttime + $sec_in_day;
1538: if ($i == ($num_plots -1 )) {
1.88 matthew 1539: $starttime = &get_time_from_row($performance_data->[0]);
1.42 matthew 1540: }
1541: }
1.96 matthew 1542: $table .= '<tr><td colspan="4" align="center"><font size="+1">'.
1.88 matthew 1543: &mt('Data from [_1] to [_2]',
1544: &Apache::lonlocal::locallocaltime($starttime),
1.96 matthew 1545: &Apache::lonlocal::locallocaltime($endtime)).
1546: '</font></td></tr>'.$/;
1.34 matthew 1547: my $startdateform = &Apache::lonhtmlcommon::date_setter
1548: ('Statistics','startdate_'.$i,$starttime);
1549: my $enddateform = &Apache::lonhtmlcommon::date_setter
1550: ('Statistics','enddate_'.$i,$endtime);
1.42 matthew 1551: #
1552: my $begin_index;
1553: my $end_index;
1554: my $j;
1.88 matthew 1555: while (++$j < scalar(@$performance_data)) {
1556: last if (&get_time_from_row($performance_data->[$j])
1.46 matthew 1557: > $starttime);
1.42 matthew 1558: }
1559: $begin_index = $j;
1.91 matthew 1560: while ($j < scalar(@$performance_data)) {
1561: if (&get_time_from_row($performance_data->[$j]) > $endtime) {
1562: last;
1563: } else {
1564: $j++;
1565: }
1.42 matthew 1566: }
1567: $end_index = $j;
1568: ##
1.96 matthew 1569: my ($processed_time_data,$correct,$data_count,$student_count) =
1570: &OR_time_process_data($performance_data,$begin_index,$end_index);
1.119 matthew 1571: $correct |= 0;
1.96 matthew 1572: ##
1573: $table .= '<tr><td colspan="4" align="center"><font size="+1">'.
1.144 bisitz 1574: &mt('[quant,_1,submission,submissions,No submissions] from [quant,_2,student], [_3] correct, [_4] incorrect',
1.96 matthew 1575: $data_count,$student_count,$correct,$data_count-$correct).
1576: '</font></td></tr>'.$/;
1.88 matthew 1577: my $concept_correct_plot = '';
1578: if ($num_concepts > 1) {
1579: $concept_correct_plot =
1.96 matthew 1580: &OR_Concept_Time_Analysis($processed_time_data,
1581: $correct,$data_count,$student_count,
1582: $ORdata,$Concepts);
1.42 matthew 1583: }
1.88 matthew 1584: my ($foil_correct_plot,$foil_incorrect_plot) =
1.96 matthew 1585: &OR_Foil_Time_Analysis($processed_time_data,
1586: $correct,$data_count,$student_count,
1587: $ORdata,$Foils,$Concepts);
1.88 matthew 1588: $table .= '<tr>'.
1589: '<td>'.$concept_correct_plot.'</td>'.
1590: '<td>'.$foil_correct_plot.'</td>'.
1591: '<td>'.$foil_incorrect_plot.'</td>'.
1592: '<td align="left" valign="top">'.$foilkey.'</td></tr>'.$/;
1593: $table .= '<tr><td colspan="4" align="center">'.
1.96 matthew 1594: &mt('Start time: [_1]',$startdateform).'<br />'.
1595: &mt('End time: [_1]',$enddateform).'</td></tr>'.$/;
1.135 bisitz 1596: $table.= '<tr><td colspan="4"> </td></tr>'.$/;
1.33 matthew 1597: }
1.88 matthew 1598: $table .= '</table>';
1.42 matthew 1599: #
1.33 matthew 1600: return $table;
1601: }
1602:
1.57 matthew 1603: sub OR_Foil_Time_Analysis {
1.96 matthew 1604: my ($processed_time_data,$correct,$data_count,$student_count,
1605: $ORdata,$Foils,$Concepts) = @_;
1606: if ($data_count <= 0) {
1.132 bisitz 1607: return ('<div class="LC_warning">'
1608: .&mt('There is no data to plot.')
1609: .'</div>'
1610: ,''
1611: );
1.96 matthew 1612: }
1.42 matthew 1613: my $analysis_html;
1.88 matthew 1614: my @plotdata;
1615: my @labels;
1616: foreach my $concept (@{$Concepts}) {
1617: foreach my $foil (@{$concept->{'foils'}}) {
1618: push(@labels,scalar(@labels)+1);
1.96 matthew 1619: my $total = $processed_time_data->{$foil}->{'_total'};
1.88 matthew 1620: if ($total == 0) {
1621: push(@{$plotdata[0]},0);
1.42 matthew 1622: } else {
1.88 matthew 1623: push(@{$plotdata[0]},
1.96 matthew 1624: 100 * $processed_time_data->{$foil}->{'_correct'} / $total);
1.37 matthew 1625: }
1.96 matthew 1626: my $total_incorrect = $total - $processed_time_data->{$foil}->{'_correct'};
1.88 matthew 1627: for (my $i=0;$i<scalar(@{$ORdata->{'_Options'}});$i++) {
1628: my $option = $ORdata->{'_Options'}->[$i];
1629: if ($total_incorrect == 0) {
1630: push(@{$plotdata[$i+1]},0);
1631: } else {
1632: push(@{$plotdata[$i+1]},
1.96 matthew 1633: 100 * $processed_time_data->{$foil}->{$option} / $total_incorrect);
1.88 matthew 1634: }
1635: }
1636: }
1637: # Put in a blank one
1638: push(@labels,'');
1639: push(@{$plotdata[0]},0);
1640: for (my $i=0;$i<scalar(@{$ORdata->{'_Options'}});$i++) {
1641: push(@{$plotdata[$i+1]},0);
1.39 matthew 1642: }
1.42 matthew 1643: }
1644: #
1645: # Create the plot
1.144 bisitz 1646: my %lt = &Apache::lonlocal::texthash(
1647: 'title' => 'Correct Statements',
1648: 'xlabel' => 'Statement Number',
1649: 'ylabel' => 'Percent Correct');
1650: my $correct_plot = &Apache::loncommon::DrawBarGraph($lt{'title'},
1651: $lt{'xlabel'},
1652: $lt{'ylabel'},
1.96 matthew 1653: 100,
1654: $plotcolors,
1655: undef,
1.105 matthew 1656: $plotdata[0],
1657: {xskip=>1});
1.88 matthew 1658: for (my $j=0; $j< scalar(@{$plotdata[0]});$j++) {
1659: $plotdata[0]->[$j]=0;
1.42 matthew 1660: }
1.144 bisitz 1661: %lt = &Apache::lonlocal::texthash(
1662: 'title' => 'Incorrect Statements',
1663: 'xlabel' => 'Statement Number',
1664: 'ylabel' => 'Incorrect Option Choice');
1.96 matthew 1665: my $incorrect_plot =
1.144 bisitz 1666: &Apache::loncommon::DrawBarGraph($lt{'title'},
1667: $lt{'xlabel'},
1668: $lt{'ylabel'},
1.96 matthew 1669: 100,
1670: $plotcolors,
1671: undef,
1.105 matthew 1672: @plotdata,{xskip=>1});
1.88 matthew 1673: return ($correct_plot,$incorrect_plot);
1.42 matthew 1674: }
1675:
1.57 matthew 1676: sub OR_Concept_Time_Analysis {
1.96 matthew 1677: my ($processed_time_data,$correct,$data_count,$student_count,
1678: $ORdata,$Concepts) = @_;
1679: return '' if ($data_count == 0);
1.33 matthew 1680: #
1.42 matthew 1681: # Put the data in plottable form
1.88 matthew 1682: my @plotdata;
1.42 matthew 1683: foreach my $concept (@$Concepts) {
1684: my ($total,$correct);
1685: foreach my $foil (@{$concept->{'foils'}}) {
1.96 matthew 1686: $total += $processed_time_data->{$foil}->{'_total'};
1687: $correct += $processed_time_data->{$foil}->{'_correct'};
1.42 matthew 1688: }
1689: if ($total == 0) {
1.88 matthew 1690: push(@plotdata,0);
1.42 matthew 1691: } else {
1.88 matthew 1692: push(@plotdata,100 * $correct / $total);
1.42 matthew 1693: }
1694: }
1695: #
1.33 matthew 1696: # Create the plot
1.144 bisitz 1697: my %lt = &Apache::lonlocal::texthash(
1698: 'title' => 'Correct Concepts',
1699: 'xlabel' => 'Concept Number',
1700: 'ylabel' => 'Percent Correct');
1701: return &Apache::loncommon::DrawBarGraph($lt{'title'},
1702: $lt{'xlabel'},
1703: $lt{'ylabel'},
1.88 matthew 1704: 100,
1705: $plotcolors,
1706: undef,
1.105 matthew 1707: \@plotdata,{xskip=>1});
1.42 matthew 1708: }
1709:
1.96 matthew 1710: sub OR_time_process_data {
1711: my ($performance_data,$begin_index,$end_index)=@_;
1712: my %processed_time_data;
1713: my %distinct_students;
1714: my ($correct,$data_count);
1715: if (($begin_index == $end_index) &&
1716: ($end_index != scalar(@$performance_data)-1)) {
1717: return undef;
1718: }
1719: # Be sure we include the last one if we are asked for it.
1720: # That we have to correct here (and not when $end_index is
1721: # given a value) should probably be considered a bug.
1722: if ($end_index == scalar(@$performance_data)-1) {
1723: $end_index++;
1724: }
1725: my $count;
1726: for (my $i=$begin_index;$i<$end_index;$i++) {
1727: my $attempt = $performance_data->[$i];
1728: $count++;
1729: next if (! defined($attempt));
1730: my %attempt = &Process_OR_Row($attempt);
1731: $data_count++;
1732: $correct += $attempt{'_correct'};
1733: $distinct_students{$attempt->[&Apache::loncoursedata::RD_student_id()]}++;
1734: while (my ($foilid,$href) = each(%attempt)) {
1735: if (! ref($href)) {
1736: $processed_time_data{$foilid} += $href;
1737: next;
1738: }
1739: while (my ($option,$value) = each(%$href)) {
1740: $processed_time_data{$foilid}->{$option}+=$value;
1741: }
1742: }
1743: }
1744: return (\%processed_time_data,$correct,$data_count,
1745: scalar(keys(%distinct_students)));
1746: }
1747:
1.46 matthew 1748: sub build_foil_index {
1749: my ($ORdata) = @_;
1.48 matthew 1750: return if (! exists($ORdata->{'_Foils'}));
1751: my %Foildata = %{$ORdata->{'_Foils'}};
1.46 matthew 1752: my @Foils = sort(keys(%Foildata));
1753: my %Concepts;
1754: foreach my $foilid (@Foils) {
1.48 matthew 1755: push(@{$Concepts{$Foildata{$foilid}->{'_Concept'}}},
1.46 matthew 1756: $foilid);
1757: }
1758: undef(@Foils);
1759: # Having gathered the concept information in a hash, we now translate it
1760: # into an array because we need to be consistent about order.
1761: # Also put the foils in order, too.
1762: my $sortfunction = sub {
1763: my %Numbers = (one => 1,
1764: two => 2,
1765: three => 3,
1766: four => 4,
1767: five => 5,
1768: six => 6,
1769: seven => 7,
1770: eight => 8,
1771: nine => 9,
1772: ten => 10,);
1773: my $a1 = lc($a);
1774: my $b1 = lc($b);
1.57 matthew 1775: if (exists($Numbers{$a1})) {
1.67 matthew 1776: $a1 = $Numbers{$a1};
1.57 matthew 1777: }
1778: if (exists($Numbers{$b1})) {
1.67 matthew 1779: $b1 = $Numbers{$b1};
1.46 matthew 1780: }
1.67 matthew 1781: if (($a1 =~/^\d+$/) && ($b1 =~/^\d+$/)) {
1782: return $a1 <=> $b1;
1.57 matthew 1783: } else {
1.67 matthew 1784: return $a1 cmp $b1;
1.46 matthew 1785: }
1786: };
1787: my @Concepts;
1788: foreach my $concept (sort $sortfunction (keys(%Concepts))) {
1.57 matthew 1789: if (! defined($Concepts{$concept})) {
1790: $Concepts{$concept}=[];
1791: # next;
1792: }
1.46 matthew 1793: push(@Concepts,{ name => $concept,
1794: foils => [@{$Concepts{$concept}}]});
1795: push(@Foils,(@{$Concepts{$concept}}));
1796: }
1797: #
1798: # Build up the table of row labels.
1.132 bisitz 1799: my $table = &Apache::loncommon::start_data_table();
1.46 matthew 1800: if (@Concepts > 1) {
1.132 bisitz 1801: $table .= &Apache::loncommon::start_data_table_header_row().
1.46 matthew 1802: '<th>'.&mt('Concept Number').'</th>'.
1803: '<th>'.&mt('Concept').'</th>'.
1804: '<th>'.&mt('Foil Number').'</th>'.
1805: '<th>'.&mt('Foil Name').'</th>'.
1806: '<th>'.&mt('Foil Text').'</th>'.
1807: '<th>'.&mt('Correct Value').'</th>'.
1.132 bisitz 1808: &Apache::loncommon::end_data_table_header_row();
1.46 matthew 1809: } else {
1.132 bisitz 1810: $table .= &Apache::loncommon::start_data_table_header_row().
1.46 matthew 1811: '<th>'.&mt('Foil Number').'</th>'.
1812: '<th>'.&mt('Foil Name').'</th>'.
1813: '<th>'.&mt('Foil Text').'</th>'.
1814: '<th>'.&mt('Correct Value').'</th>'.
1.132 bisitz 1815: &Apache::loncommon::end_data_table_header_row();
1.46 matthew 1816: }
1817: my $conceptindex = 1;
1818: my $foilindex = 1;
1819: foreach my $concept (@Concepts) {
1820: my @FoilsInConcept = @{$concept->{'foils'}};
1821: my $firstfoil = shift(@FoilsInConcept);
1822: if (@Concepts > 1) {
1.132 bisitz 1823: $table .= &Apache::loncommon::start_data_table_row().
1.46 matthew 1824: '<td>'.$conceptindex.'</td>'.
1.83 albertel 1825: '<td>'.&HTML::Entities::encode($concept->{'name'},'<>&"').'</td>'.
1.46 matthew 1826: '<td>'.$foilindex++.'</td>'.
1.83 albertel 1827: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'name'},'<>&"').'</td>'.
1.65 matthew 1828: '<td>'.$Foildata{$firstfoil}->{'text'}.'</td>'.
1.83 albertel 1829: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'value'},'<>&"').'</td>'.
1.132 bisitz 1830: &Apache::loncommon::end_data_table_row();
1.46 matthew 1831: } else {
1.132 bisitz 1832: $table .= &Apache::loncommon::start_data_table_row().
1.46 matthew 1833: '<td>'.$foilindex++.'</td>'.
1.83 albertel 1834: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'name'},'<>&"').'</td>'.
1.65 matthew 1835: '<td>'.$Foildata{$firstfoil}->{'text'}.'</td>'.
1.83 albertel 1836: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'value'},'<>&"').'</td>'.
1.132 bisitz 1837: &Apache::loncommon::end_data_table_row();
1.46 matthew 1838: }
1839: foreach my $foilid (@FoilsInConcept) {
1840: if (@Concepts > 1) {
1.132 bisitz 1841: $table .= &Apache::loncommon::start_data_table_row().
1.46 matthew 1842: '<td></td>'.
1843: '<td></td>'.
1844: '<td>'.$foilindex.'</td>'.
1.83 albertel 1845: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'name'},'<>&"').'</td>'.
1.65 matthew 1846: '<td>'.$Foildata{$foilid}->{'text'}.'</td>'.
1.84 albertel 1847: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'value'},'<>&"').'</td>'.
1.132 bisitz 1848: &Apache::loncommon::end_data_table_row();
1.46 matthew 1849: } else {
1.132 bisitz 1850: $table .= &Apache::loncommon::start_data_table_row().
1.46 matthew 1851: '<td>'.$foilindex.'</td>'.
1.83 albertel 1852: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'name'},'<>&"').'</td>'.
1.65 matthew 1853: '<td>'.$Foildata{$foilid}->{'text'}.'</td>'.
1.83 albertel 1854: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'value'},'<>&"').'</td>'.
1.132 bisitz 1855: &Apache::loncommon::end_data_table_row();
1.46 matthew 1856: }
1857: } continue {
1858: $foilindex++;
1859: }
1860: } continue {
1861: $conceptindex++;
1862: }
1.132 bisitz 1863: $table .= &Apache::loncommon::end_data_table();
1.46 matthew 1864: #
1865: # Build option index with color stuff
1866: return ($table,\@Foils,\@Concepts);
1867: }
1868:
1869: sub build_option_index {
1870: my ($ORdata)= @_;
1871: my $table = "<table>\n";
1872: my $optionindex = 0;
1873: my @Rows;
1.48 matthew 1874: foreach my $option (&mt('correct option chosen'),@{$ORdata->{'_Options'}}) {
1.95 matthew 1875: my $color = $plotcolors->[$optionindex++];
1.46 matthew 1876: push (@Rows,
1877: '<tr>'.
1.95 matthew 1878: '<td bgcolor="'.$color.'">'.
1879: '<font color="'.$color.'">'.('*'x3).'</font>'.'</td>'.
1.83 albertel 1880: '<td>'.&HTML::Entities::encode($option,'<>&"').'</td>'.
1.46 matthew 1881: "</tr>\n");
1882: }
1883: shift(@Rows); # Throw away 'correct option chosen' color
1884: $table .= join('',reverse(@Rows));
1885: $table .= "</table>\n";
1886: }
1887:
1.94 matthew 1888: sub build_foil_key {
1889: my ($foils,$extra_data)= @_;
1890: if (! defined($extra_data)) { $extra_data = {}; }
1891: my $table = "<table>\n";
1892: my $foil_index = 0;
1893: my @rows;
1894: foreach my $foil (&mt('correct foil chosen'),@{$foils}) {
1.95 matthew 1895: my $color = $plotcolors->[$foil_index++];
1.94 matthew 1896: push (@rows,
1897: '<tr>'.
1.95 matthew 1898: '<td bgcolor="'.$color.'" class="key">'.
1899: '<font color="'.$color.'">'.('*'x4).'</font></td>'.
1.94 matthew 1900: '<td>'.&HTML::Entities::encode($foil,'<>&"').
1901: (' 'x2).$extra_data->{$foil}.'</td>'.
1902: "</tr>\n");
1903: }
1904: shift(@rows); # Throw away 'correct foil chosen' color
1905: $table .= join('',reverse(@rows));
1906: $table .= "</table>\n";
1907: }
1908:
1.33 matthew 1909: #########################################################
1910: #########################################################
1911: ##
1.46 matthew 1912: ## Generic Interface Routines
1.33 matthew 1913: ##
1914: #########################################################
1915: #########################################################
1.23 matthew 1916: sub CreateInterface {
1.28 matthew 1917: ##
1918: ## Environment variable initialization
1.120 albertel 1919: if (! exists($env{'form.AnalyzeOver'})) {
1920: $env{'form.AnalyzeOver'} = 'tries';
1.28 matthew 1921: }
1922: ##
1923: ## Build the menu
1.7 stredwic 1924: my $Str = '';
1.132 bisitz 1925: $Str .= '<p>';
1926: $Str .= &Apache::loncommon::start_data_table();
1927: $Str .= &Apache::loncommon::start_data_table_header_row();
1928: $Str .= '<th>'.&mt('Sections').'</th>';
1929: $Str .= '<th>'.&mt('Groups').'</th>';
1930: $Str .= '<th>'.&mt('Access Status').'</th>';
1931: $Str .= '<th>'.&mt('Options').'</th>';
1932: $Str .= &Apache::loncommon::end_data_table_header_row();
1.31 matthew 1933: ##
1934: ##
1.132 bisitz 1935: $Str .= &Apache::loncommon::start_data_table_row();
1936: $Str .= '<td align="center">'."\n";
1.23 matthew 1937: $Str .= &Apache::lonstatistics::SectionSelect('Section','multiple',5);
1.28 matthew 1938: $Str .= '</td>';
1939: #
1.127 raeburn 1940: $Str .= '<td align="center">'."\n";
1941: $Str .= &Apache::lonstatistics::GroupSelect('Group','multiple',5);
1942: $Str .= '</td>';
1943: #
1.28 matthew 1944: $Str .= '<td align="center">';
1.23 matthew 1945: $Str .= &Apache::lonhtmlcommon::StatusOptions(undef,undef,5);
1.28 matthew 1946: $Str .= '</td>';
1947: #
1.36 matthew 1948: ##
1949: ##
1.138 bisitz 1950: $Str .= '<td valign="top">';
1.91 matthew 1951: ##
1952: my $showprob_checkbox =
1.138 bisitz 1953: '<input type="checkbox" name="show_prob" value="true"';
1.120 albertel 1954: if ($env{'form.show_prob'} eq 'true') {
1.138 bisitz 1955: $showprob_checkbox .= ' checked="checked"';
1.91 matthew 1956: }
1957: $showprob_checkbox.= ' />';
1.133 bisitz 1958: $Str.= '<span class="LC_nobreak"><label>'.
1.138 bisitz 1959: $showprob_checkbox.' '.&mt('Show problem').
1.133 bisitz 1960: '</label></span><br />';
1.91 matthew 1961: ##
1.146 raeburn 1962: my $analyze_selector = '<select name="AnalyzeOver">';
1963: $analyze_selector .= '<option value="tries"';
1.120 albertel 1964: if (! exists($env{'form.AnalyzeOver'}) ||
1965: $env{'form.AnalyzeOver'} eq 'tries'){
1.94 matthew 1966: # Default to tries
1.146 raeburn 1967: $analyze_selector .= ' selected="selected"';
1.90 matthew 1968: }
1969: $analyze_selector .= '>'.&mt('Tries').'</option>';
1.145 bisitz 1970: $analyze_selector .= '<option value="time"';
1971: $analyze_selector .= ' selected="selected"' if ($env{'form.AnalyzeOver'} eq 'time');
1.90 matthew 1972: $analyze_selector .= '>'.&mt('Time').'</option>';
1973: $analyze_selector .= '</select>';
1.133 bisitz 1974: $Str .= '<span class="LC_nobreak"><label>'.
1.90 matthew 1975: &mt('Analyze Over [_1] [_2]',
1976: $analyze_selector,
1977: &Apache::loncommon::help_open_topic('Analysis_Analyze_Over')).
1.133 bisitz 1978: '</label></span><br />'.$/;
1.90 matthew 1979: ##
1980: my $numplots_selector = '<select name="NumPlots">';
1.120 albertel 1981: if (! exists($env{'form.NumPlots'})
1982: || $env{'form.NumPlots'} < 1
1983: || $env{'form.NumPlots'} > 20) {
1984: $env{'form.NumPlots'} = 5;
1.90 matthew 1985: }
1986: foreach my $i (1,2,3,4,5,6,7,8,10,15,20) {
1987: $numplots_selector .= '<option value="'.$i.'" ';
1.132 bisitz 1988: if ($env{'form.NumPlots'} == $i) { $numplots_selector.=' selected="selected" '; }
1.90 matthew 1989: $numplots_selector .= '>'.$i.'</option>';
1990: }
1.134 raeburn 1991: $numplots_selector .= '</select>';
1.133 bisitz 1992: $Str .= '<span class="LC_nobreak"><label>'.&mt('Number of Plots [_1]',$numplots_selector).
1.134 raeburn 1993: '</label></span><br />';
1.90 matthew 1994: ##
1.132 bisitz 1995: $Str .= '</td>';
1996: ##
1997: ##
1998: $Str .= &Apache::loncommon::end_data_table_row();
1999: $Str .= &Apache::loncommon::end_data_table();
2000: $Str .= '<p class="LC_nobreak"><label>'
1.131 bisitz 2001: .&mt('Status: [_1]',
2002: '<input type="text" name="stats_status"'
2003: .' size="60" value="" readonly="readonly" />')
1.132 bisitz 2004: .'</label></p>';
2005: $Str .= '</p>';
1.42 matthew 2006: return $Str;
1.54 matthew 2007: }
1.47 matthew 2008:
2009: #########################################################
2010: #########################################################
2011: ##
2012: ## Misc Option Response functions
2013: ##
2014: #########################################################
2015: #########################################################
2016: sub get_time_from_row {
1.42 matthew 2017: my ($row) = @_;
2018: if (ref($row)) {
1.47 matthew 2019: return $row->[&Apache::loncoursedata::RD_timestamp()];
1.42 matthew 2020: }
2021: return undef;
2022: }
2023:
1.47 matthew 2024: sub get_tries_from_row {
1.42 matthew 2025: my ($row) = @_;
2026: if (ref($row)) {
1.47 matthew 2027: return $row->[&Apache::loncoursedata::RD_tries()];
1.42 matthew 2028: }
2029: return undef;
2030: }
2031:
1.48 matthew 2032: sub hashify_attempt {
2033: my ($row) = @_;
2034: my %attempt;
1.94 matthew 2035: $attempt{'student'} = $row->[&Apache::loncoursedata::RD_sname()];
1.48 matthew 2036: $attempt{'tries'} = $row->[&Apache::loncoursedata::RD_tries()];
1.126 www 2037: $attempt{'submission'} = &unescape($row->[&Apache::loncoursedata::RD_submission()]);
1.48 matthew 2038: $attempt{'award'} = $row->[&Apache::loncoursedata::RD_awarddetail()];
2039: $attempt{'timestamp'} = $row->[&Apache::loncoursedata::RD_timestamp()];
2040: return %attempt;
2041: }
2042:
1.46 matthew 2043: sub Process_OR_Row {
1.42 matthew 2044: my ($row) = @_;
2045: my %RowData;
1.96 matthew 2046: # my $student_id = $row->[&Apache::loncoursedata::RD_student_id()];
1.47 matthew 2047: my $award = $row->[&Apache::loncoursedata::RD_awarddetail()];
2048: my $grading = $row->[&Apache::loncoursedata::RD_response_eval()];
2049: my $submission = $row->[&Apache::loncoursedata::RD_submission()];
2050: my $time = $row->[&Apache::loncoursedata::RD_timestamp()];
1.96 matthew 2051: # my $tries = $row->[&Apache::loncoursedata::RD_tries()];
1.43 matthew 2052: return undef if ($award eq 'MISSING_ANSWER');
1.97 matthew 2053: if (&submission_is_correct($award)) {
1.42 matthew 2054: $RowData{'_correct'} = 1;
2055: }
2056: $RowData{'_total'} = 1;
2057: my @Foilgrades = split('&',$grading);
2058: my @Foilsubs = split('&',$submission);
2059: for (my $j=0;$j<=$#Foilgrades;$j++) {
2060: my ($foilid,$correct) = split('=',$Foilgrades[$j]);
1.126 www 2061: $foilid = &unescape($foilid);
1.42 matthew 2062: my (undef,$submission) = split('=',$Foilsubs[$j]);
2063: if ($correct) {
2064: $RowData{$foilid}->{'_correct'}++;
2065: } else {
1.126 www 2066: $submission = &unescape($submission);
1.42 matthew 2067: $RowData{$foilid}->{$submission}++;
2068: }
2069: $RowData{$foilid}->{'_total'}++;
2070: }
2071: return %RowData;
1.47 matthew 2072: }
2073:
1.97 matthew 2074: sub submission_is_correct {
2075: my ($award) = @_;
2076: if ($award =~ /(APPROX_ANS|EXACT_ANS)/) {
2077: return 1;
2078: } else {
2079: return 0;
2080: }
2081: }
2082:
1.23 matthew 2083: 1;
1.1 stredwic 2084:
2085: __END__
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