Annotation of loncom/interface/statistics/lonproblemanalysis.pm, revision 1.124
1.1 stredwic 1: # The LearningOnline Network with CAPA
2: #
1.124 ! bowersj2 3: # $Id: lonproblemanalysis.pm,v 1.123 2006/01/22 04:10:04 bowersj2 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;
1.2 stredwic 41:
1.40 matthew 42: my $plotcolors = ['#33ff00',
43: '#0033cc', '#990000', '#aaaa66', '#663399', '#ff9933',
44: '#66ccff', '#ff9999', '#cccc33', '#660000', '#33cc66',
45: ];
1.39 matthew 46:
1.54 matthew 47: my @SubmitButtons = ({ name => 'PrevProblemAnalysis',
48: text => 'Previous Problem' },
49: { name => 'ProblemAnalysis',
1.46 matthew 50: text => 'Analyze Problem Again' },
1.54 matthew 51: { name => 'NextProblemAnalysis',
52: text => 'Next Problem' },
53: { name => 'break'},
1.46 matthew 54: { name => 'SelectAnother',
1.111 matthew 55: text => 'Choose a different Problem' });
1.46 matthew 56:
1.1 stredwic 57: sub BuildProblemAnalysisPage {
1.23 matthew 58: my ($r,$c)=@_;
1.49 matthew 59: #
60: my %Saveable_Parameters = ('Status' => 'scalar',
61: 'Section' => 'array',
62: 'NumPlots' => 'scalar',
63: 'AnalyzeOver' => 'scalar',
64: );
65: &Apache::loncommon::store_course_settings('problem_analysis',
66: \%Saveable_Parameters);
67: &Apache::loncommon::restore_course_settings('problem_analysis',
68: \%Saveable_Parameters);
69: #
70: &Apache::lonstatistics::PrepareClasslist();
1.48 matthew 71: #
1.25 matthew 72: $r->print(&CreateInterface());
1.28 matthew 73: #
74: my @Students = @Apache::lonstatistics::Students;
75: #
1.120 albertel 76: if (@Students < 1 && exists($env{'form.firstrun'})) {
1.46 matthew 77: $r->print('<h2>There are no students in the sections selected</h2>');
78: }
79: #
1.85 matthew 80: my @CacheButtonHTML =
81: &Apache::lonstathelpers::manage_caches($r,'Statistics','stats_status');
1.39 matthew 82: $r->rflush();
1.46 matthew 83: #
1.111 matthew 84: my $problem_types = '(option|radiobutton|numerical)';
1.120 albertel 85: if (exists($env{'form.problemchoice'}) &&
86: ! exists($env{'form.SelectAnother'})) {
1.46 matthew 87: foreach my $button (@SubmitButtons) {
1.54 matthew 88: if ($button->{'name'} eq 'break') {
89: $r->print("<br />\n");
90: } else {
91: $r->print('<input type="submit" name="'.$button->{'name'}.'" '.
92: 'value="'.&mt($button->{'text'}).'" />');
93: $r->print(' 'x5);
94: }
1.46 matthew 95: }
1.85 matthew 96: foreach my $html (@CacheButtonHTML) {
97: $r->print($html.(' 'x5));
98: }
1.31 matthew 99: #
1.123 bowersj2 100:
101: # This is commented out pending actual implementation of
102: # CSV and Excel output.
103: #$r->print(&Apache::lonstathelpers::submission_report_form
104: # ('problem_analysis'));
1.115 matthew 105: #
1.25 matthew 106: $r->print('<hr />');
1.54 matthew 107: $r->rflush();
108: #
109: # Determine which problem we are to analyze
1.61 matthew 110: my $current_problem = &Apache::lonstathelpers::get_target_from_id
1.120 albertel 111: ($env{'form.problemchoice'});
1.54 matthew 112: #
1.116 matthew 113: my ($navmap,$prev,$curr,$next) =
1.61 matthew 114: &Apache::lonstathelpers::get_prev_curr_next($current_problem,
1.66 matthew 115: $problem_types,
116: 'response',
1.61 matthew 117: );
1.120 albertel 118: if (exists($env{'form.PrevProblemAnalysis'}) && defined($prev)) {
1.54 matthew 119: $current_problem = $prev;
1.120 albertel 120: } elsif (exists($env{'form.NextProblemAnalysis'}) && defined($next)) {
1.54 matthew 121: $current_problem = $next;
122: } else {
123: $current_problem = $curr;
124: }
1.23 matthew 125: #
1.54 matthew 126: # Store the current problem choice and send it out in the form
1.120 albertel 127: $env{'form.problemchoice'} =
1.61 matthew 128: &Apache::lonstathelpers::make_target_id($current_problem);
1.54 matthew 129: $r->print('<input type="hidden" name="problemchoice" value="'.
1.120 albertel 130: $env{'form.problemchoice'}.'" />');
1.28 matthew 131: #
1.54 matthew 132: if (! defined($current_problem->{'resource'})) {
1.46 matthew 133: $r->print('resource is undefined');
134: } else {
1.54 matthew 135: my $resource = $current_problem->{'resource'};
1.116 matthew 136: $r->print('<h1>'.$resource->compTitle.'</h1>');
137: $r->print('<h3>'.$resource->src.'</h3>');
1.118 matthew 138: $r->print('<h4>'.&Apache::lonstatistics::section_and_enrollment_description().'</h4>');
1.120 albertel 139: if ($env{'form.show_prob'} eq 'true') {
1.91 matthew 140: $r->print(&Apache::lonstathelpers::render_resource($resource));
141: }
1.44 matthew 142: $r->rflush();
1.71 matthew 143: my %Data = &Apache::lonstathelpers::get_problem_data
1.116 matthew 144: ($resource->src);
1.88 matthew 145: my $problem_data = $Data{$current_problem->{'part'}.
1.54 matthew 146: '.'.
147: $current_problem->{'respid'}};
148: if ($current_problem->{'resptype'} eq 'option') {
1.56 matthew 149: &OptionResponseAnalysis($r,$current_problem,
1.88 matthew 150: $problem_data,
1.47 matthew 151: \@Students);
1.54 matthew 152: } elsif ($current_problem->{'resptype'} eq 'radiobutton') {
1.97 matthew 153: &radio_response_analysis($r,$current_problem,
154: $problem_data,
155: \@Students);
1.66 matthew 156: } elsif ($current_problem->{'resptype'} eq 'numerical') {
1.103 matthew 157: &numerical_response_analysis($r,$current_problem,
158: $problem_data,\@Students);
1.47 matthew 159: } else {
1.102 matthew 160: $r->print('<h2>Analysis of '.$current_problem->{'resptype'}.' is not supported</h2>');
1.47 matthew 161: }
1.7 stredwic 162: }
1.23 matthew 163: $r->print('<hr />');
1.25 matthew 164: } else {
1.121 matthew 165: my $submit_button = '<input type="submit" '.
166: 'name="ProblemAnalysis" value="'.
167: &mt('Analyze Problem').'" />';
168: $r->print($submit_button);
1.31 matthew 169: $r->print(' 'x5);
1.27 matthew 170: $r->print('<h3>'.&mt('Please select a problem to analyze').'</h3>');
1.121 matthew 171: $r->print(&Apache::lonstathelpers::problem_selector($problem_types,
172: $submit_button));
1.1 stredwic 173: }
174: }
175:
1.69 matthew 176: #########################################################
177: #########################################################
178: ##
1.66 matthew 179: ## Numerical Response Routines
180: ##
181: #########################################################
182: #########################################################
1.103 matthew 183: sub numerical_response_analysis {
184: my ($r,$problem,$problem_analysis,$students) = @_;
1.79 matthew 185: my $c = $r->connection();
1.103 matthew 186: #
1.120 albertel 187: if ($env{'form.AnalyzeOver'} !~ /^(tries|time)$/) {
1.103 matthew 188: $r->print('Bad request');
189: }
190: #
1.82 matthew 191: my ($resource,$partid,$respid) = ($problem->{'resource'},
192: $problem->{'part'},
193: $problem->{'respid'});
1.103 matthew 194: # Gather student data
195: my $response_data = &Apache::loncoursedata::get_response_data
1.118 matthew 196: ([&Apache::lonstatistics::get_selected_sections()],
1.82 matthew 197: $Apache::lonstatistics::enrollment_status,
1.116 matthew 198: $resource->symb,$respid);
1.103 matthew 199: #
1.104 matthew 200: $problem_analysis->{'answercomputed'} = 1;
201: if ($problem_analysis->{'answercomputed'}) {
202: my $answers =
203: &Apache::lonstathelpers::GetStudentAnswers($r,$problem,$students,
204: 'Statistics',
205: 'stats_status');
206: $r->print(&numerical_one_dimensional_plot($r,600,150,$answers));
207: }
1.106 matthew 208: #
209: if (ref($response_data) ne 'ARRAY') {
210: $r->print('<h2>'.
211: &mt('There is no submission data for this resource').
212: '</h2>');
213: return;
214: }
1.104 matthew 215: my $analysis_html = '<table>';
1.120 albertel 216: for (my $plot_num = 1;$plot_num<=$env{'form.NumPlots'};$plot_num++) {
1.103 matthew 217: my $restriction_function;
1.104 matthew 218: my $header_message;
219: my $stats_message;
220: my $post_message; # passed through &mt sooner rather than later
221: my $no_data_message;
222: my @extra_data;
1.120 albertel 223: if ($env{'form.AnalyzeOver'} eq 'tries') {
1.104 matthew 224: $restriction_function = sub {($_[0]->{'tries'} == $plot_num?1:0)};
225: $header_message = 'Attempt [_1]';
226: $stats_message =
227: '[_1] submissions, [_2] correct, [_3] incorrect';
228: $post_message = '';
229: $no_data_message = 'No data exists for attempt [_1]';
230: } else {
231: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
232: ('startdate_'.$plot_num);
233: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
234: ('enddate_'.$plot_num);
235: ($starttime,$endtime) = &ensure_start_end_times
236: ($starttime,$endtime,
237: &get_time_from_row($response_data->[0]),
238: &get_time_from_row($response_data->[-1]),
239: $plot_num);
240: $header_message = 'Data from [_2] to [_3]';
241: $extra_data[0] = &Apache::lonlocal::locallocaltime($starttime);
242: $extra_data[1] = &Apache::lonlocal::locallocaltime($endtime);
243: #
244: $stats_message =
245: '[_1] submissions from [_4] students, [_2] correct, [_3] incorrect';
246: #
247: $post_message =
248: &mt('Start time: [_1]',
249: &Apache::lonhtmlcommon::date_setter
250: ('Statistics','startdate_'.$plot_num,$starttime)).
251: '<br />'.
252: &mt('End time: [_1]',
253: &Apache::lonhtmlcommon::date_setter
254: ('Statistics','enddate_'.$plot_num,$endtime));
255: $restriction_function =
256: sub {
257: my $t = $_[0]->{'timestamp'};
258: if ($t >= $starttime && $t < $endtime) {
259: return 1;
260: } else {
261: return 0;
262: }
263: };
264: $no_data_message = 'No data for [_2] to [_3]';
265: }
1.103 matthew 266: #
1.106 matthew 267: my ($correct,$answers) =
268: &numerical_determine_answers($r,$resource,$partid,
269: $respid,$students);
1.103 matthew 270: if ($c->aborted()) { return; };
271: #
1.112 matthew 272: my ($responses,$stats) =
273: &numerical_classify_responses($response_data,$correct,
274: $restriction_function);
275: if ($stats->{'submission_count'} == 0) {
1.104 matthew 276: $analysis_html.=
277: '<tr><td colspan="2"><font size="+1"><b>'.
278: &mt($no_data_message,$plot_num,@extra_data).
279: '</b></font></td></tr>';
280: } else {
281: $analysis_html.=
282: '<tr><td colspan="2" align="center"><font size="+1"><b>'.
283: &mt($header_message,$plot_num,@extra_data).
284: '</b></font></td></tr>'.
285: '<tr><td colspan="2" align="center">'.
286: &mt($stats_message,
1.112 matthew 287: $stats->{'submission_count'},
288: $stats->{'correct_count'},
289: $stats->{'incorrect_count'},
290: $stats->{'students'},
1.104 matthew 291: @extra_data).
292: '</td></tr>'.
293: '<tr>'.'<td valign="top" align="center">'.
1.112 matthew 294: &numerical_plot_percent($r,$responses,$stats).'</td>'.
1.104 matthew 295: '<td align="center" valign="top">'.
1.112 matthew 296: &numerical_plot_differences($r,$responses,$stats).'</td>'.
1.104 matthew 297: '</tr>';
298: }
299: if ($post_message ne '') {
300: $analysis_html .=
301: '<tr><td colspan="2">'.$post_message.'</td></tr>';
302: }
1.66 matthew 303: }
1.104 matthew 304: $analysis_html.='</table>';
305: $r->print($analysis_html);
1.78 matthew 306: #
1.103 matthew 307: return;
308: }
1.102 matthew 309:
1.103 matthew 310: sub numerical_plot_percent {
1.112 matthew 311: my ($r,$responses,$stats) = @_;
1.103 matthew 312: #
1.112 matthew 313: my $total = $stats->{'submission_count'};
1.103 matthew 314: return '' if ($total == 0);
1.114 matthew 315: my $max_bins = 50;
316: my $lowest_percent = $stats->{'min_percent'};
317: my $highest_percent = $stats->{'max_percent'};
318: my $percent_spread = $highest_percent - $lowest_percent;
319: foreach (qw/20 30 40 50 100 200/) {
320: if ($percent_spread < $_) {
321: $highest_percent =$_/2;
322: last;
323: }
1.113 matthew 324: }
1.114 matthew 325: my $bin_size = 1;
326: foreach (qw/0.01 0.05 0.1 0.5 1 2 5 10 20 25 50 100/) {
327: if ($lowest_percent/2 < $_){
328: $bin_size = $_;
329: last;
330: }
1.113 matthew 331: }
1.103 matthew 332: my @bins;
1.114 matthew 333: for (my $bin = -$highest_percent;$bin<0;$bin+=$bin_size) {
334: push (@bins,$bin);
335: }
336: for (my $bin = 0; $bin<$highest_percent;$bin+=$bin_size) {
337: push (@bins,$bin);
1.103 matthew 338: }
1.114 matthew 339: push(@bins,$highest_percent);
1.103 matthew 340: #
341: my @correct;
342: my @incorrect;
1.104 matthew 343: my @count;
1.112 matthew 344: while (my ($ans,$submissions) = each(%$responses)) {
1.104 matthew 345: while (my ($submission,$counts) = each(%$submissions)) {
346: my ($correct_count,$incorrect_count) = @$counts;
1.122 albertel 347: my $scaled_value =
348: ($ans) ? 100*($submission-$ans)/abs($ans)
349: : 0;
1.114 matthew 350: if ($scaled_value < $bins[0]) {
351: $bins[0]=$scaled_value -1;
352: }
353: my $bin;
354: for ($bin=0;$bin<$#bins;$bin++) {
1.103 matthew 355: last if ($bins[$bin]>$scaled_value);
356: }
1.114 matthew 357: $correct[$bin-1]+=$correct_count;
358: $incorrect[$bin-1]+=$incorrect_count;
359: $count[$bin-1]+=$correct_count+$incorrect_count;
1.103 matthew 360: }
361: }
362: #
1.114 matthew 363: my @plot_correct = @correct;
364: my @plot_incorrect = @incorrect;
365: my $max;
366: for (my $i=0;$i<$#bins;$i++) {
367: $plot_correct[$i] *= 100/$total;
368: $plot_incorrect[$i] *= 100/$total;
369: if (! defined($max) ||
370: $max < $plot_correct[$i]+$plot_incorrect[$i] ) {
371: $max = $plot_correct[$i]+$plot_incorrect[$i];
1.112 matthew 372: }
373: }
1.114 matthew 374: foreach (qw/1 5 10 15 20 25 30 40 50 75 100/) {
375: if ($max <$_) { $max = $_; last; }
1.103 matthew 376: }
1.112 matthew 377: #
1.113 matthew 378: my $title = &mt('Percent Difference');
1.114 matthew 379: my @labels = (1..scalar(@bins)-1);
1.103 matthew 380: my $graph = &Apache::loncommon::DrawBarGraph
1.114 matthew 381: ($title,'Percent Difference from Correct','Percent of Answers',
382: $max,['#33FF00','#FF3300'],\@labels,\@plot_correct,\@plot_incorrect,
1.103 matthew 383: {xskip=>1});
384: #
1.104 matthew 385: my $table = $graph.$/.
386: &numerical_bin_table(\@bins,\@labels,\@incorrect,\@correct,\@count).$/;
1.103 matthew 387: return $table;
388: }
389:
390: sub numerical_plot_differences {
1.112 matthew 391: my ($r,$responses,$stats) = @_;
1.103 matthew 392: #
1.112 matthew 393: my $total = $stats->{'submission_count'};
1.103 matthew 394: return '' if ($total == 0);
1.114 matthew 395: my $max_bins = 21;
1.113 matthew 396: my $min_bin_size = $stats->{'min_abs'};
397: my $low_bin = $stats->{'lowest_ans'}-$stats->{'max_bin_size'};
398: my $high_bin = $stats->{'highest_ans'}+$stats->{'max_bin_size'};
399: if ($high_bin > 0 && $low_bin > -$high_bin) {
400: $low_bin = -$high_bin;
401: } elsif ($low_bin < 0 && $high_bin < -$low_bin) {
402: $high_bin = -$low_bin;
403: }
1.124 ! bowersj2 404: if (!$min_bin_size ||
! 405: ($high_bin -$low_bin)/$min_bin_size * 2 > $max_bins) {
1.113 matthew 406: $min_bin_size = abs($high_bin - $low_bin) / $max_bins * 2;
407: }
1.103 matthew 408: my @bins;
1.113 matthew 409: for (my $num = $low_bin;$num <= $high_bin;$num+=($min_bin_size/2)) {
410: push(@bins,$num);
1.103 matthew 411: }
412: #
413: my @correct;
414: my @incorrect;
1.104 matthew 415: my @count;
1.112 matthew 416: while (my ($ans,$submissions) = each(%$responses)) {
1.104 matthew 417: while (my ($submission,$counts) = each(%$submissions)) {
418: my ($correct_count,$incorrect_count) = @$counts;
1.113 matthew 419: my $scaled_value = $submission-$ans;
1.114 matthew 420: if ($scaled_value < $bins[0]) {
421: $bins[0]=$scaled_value-1;
422: }
1.103 matthew 423: my $bin=0;
1.114 matthew 424: for ($bin=0;$bin<$#bins;$bin++) {
1.113 matthew 425: last if ($bins[$bin]>$scaled_value);
1.103 matthew 426: }
1.114 matthew 427: $correct[$bin-1]+=$correct_count;
428: $incorrect[$bin-1]+=$incorrect_count;
429: $count[$bin-1]+=$correct_count+$incorrect_count;
1.103 matthew 430: }
431: }
1.113 matthew 432: my @plot_correct = @correct;
433: my @plot_incorrect = @incorrect;
1.114 matthew 434: my $max;
1.103 matthew 435: for (my $i=0;$i<=$#bins;$i++) {
1.113 matthew 436: $plot_correct[$i] *= 100/$total;
437: $plot_incorrect[$i] *= 100/$total;
1.114 matthew 438: if (! defined($max) ||
439: $max < $plot_correct[$i]+$plot_incorrect[$i] ) {
440: $max = $plot_correct[$i]+$plot_incorrect[$i];
441: }
442: }
443: foreach (qw/1 5 10 15 20 25 30 40 50 75 100/) {
444: if ($max <$_) { $max = $_; last; }
1.103 matthew 445: }
1.113 matthew 446: #
447: my $title = &mt('Difference between submission and correct');
1.114 matthew 448: my @labels = (1..scalar(@bins)-1);
1.103 matthew 449: my $graph = &Apache::loncommon::DrawBarGraph
1.114 matthew 450: ($title,'Difference from Correct','Percent of Answers',
451: $max,['#33FF00','#FF3300'],\@labels,\@plot_correct,\@plot_incorrect,
1.104 matthew 452: {xskip=>1});
1.103 matthew 453: #
1.104 matthew 454: my $table = $graph.$/.
455: &numerical_bin_table(\@bins,\@labels,\@incorrect,\@correct,\@count).$/;
456: return $table;
457: }
458:
459: sub numerical_classify_responses {
460: my ($full_row_data,$correct,$function) = @_;
461: my %submission_data;
462: my %students;
1.112 matthew 463: my %stats;
1.104 matthew 464: my $max=0;
465: foreach my $row (@$full_row_data) {
466: my %subm = &hashify_attempt($row);
467: if (ref($correct) eq 'HASH') {
1.112 matthew 468: my $s_correct = $correct->{$subm{'student'}};
469: $subm{'correct'} = $s_correct->{'answer'};
470: foreach my $item ('unit','ans_low','ans_high') {
471: $subm{$item} = $s_correct->{$item};
472: }
1.106 matthew 473: } else { # This probably never happens....
474: $subm{'correct'} = $correct->{'answer'};
475: $subm{'unit'} = $correct->{'unit'};
1.104 matthew 476: }
1.112 matthew 477: #
478: my $abs_low =abs($subm{'correct'}-$subm{'ans_low'});
479: my $abs_high=abs($subm{'correct'}-$subm{'ans_high'});
480: if (! defined($stats{'min_abs'}) ||
481: $stats{'min_abs'} > $abs_low) {
482: $stats{'min_abs'} = $abs_low;
483: }
484: if ($stats{'min_abs'} > $abs_high) {
485: $stats{'min_abs'} = $abs_high;
486: }
487: if (! defined($stats{'max_abs'}) ||
488: $stats{'max_abs'} < $abs_low) {
489: $stats{'max_abs'} = $abs_low;
490: }
491: if ($stats{'max_abs'} < $abs_high) {
492: $stats{'max_abs'} = $abs_high;
493: }
1.119 matthew 494: my $low_percent;
495: my $high_percent;
496: if (defined($subm{'correct'}) && $subm{'correct'} != 0) {
497: $low_percent = 100 * abs($abs_low / $subm{'correct'});
498: $high_percent = 100 * abs($abs_high / $subm{'correct'});
499: }
1.112 matthew 500: if (! defined($stats{'min_percent'}) ||
501: $stats{'min_percent'} > $low_percent) {
502: $stats{'min_percent'} = $low_percent;
503: }
504: if ($stats{'min_percent'} > $high_percent) {
505: $stats{'min_percent'} = $high_percent;
506: }
507: if (! defined($stats{'max_percent'}) ||
508: $stats{'max_percent'} < $low_percent) {
509: $stats{'max_percent'} = $low_percent;
510: }
511: if ($stats{'max_percent'} < $high_percent) {
512: $stats{'max_percent'} = $high_percent;
513: }
514: if (! defined($stats{'lowest_ans'}) ||
515: $stats{'lowest_ans'} > $subm{'correct'}) {
516: $stats{'lowest_ans'} = $subm{'correct'};
517: }
518: if (! defined($stats{'highest_ans'}) ||
519: $stats{'highest_ans'} < $subm{'correct'}) {
520: $stats{'highest_ans'} = $subm{'correct'};
521: }
522: #
1.104 matthew 523: $subm{'submission'} =~ s/=\d+\s*$//;
524: if (&$function(\%subm)) {
1.106 matthew 525: my $scaled = '1';
526: my ($sname,$sdom) = split(':',$subm{'student'});
1.109 matthew 527: my ($myunit,$mysub) = ($subm{'unit'},$subm{'submission'});
528: my $result =
529: &capa::caparesponse_get_real_response($myunit,
530: $mysub,
531: \$scaled);
1.114 matthew 532: # &Apache::lonnet::logthis('scaled = '.$scaled.' result ='.$result);
1.109 matthew 533: next if (! defined($scaled));
1.112 matthew 534: # next if ($result ne '6');
1.109 matthew 535: my $submission = $scaled;
1.104 matthew 536: $students{$subm{'student'}}++;
1.112 matthew 537: $stats{'submission_count'}++;
1.104 matthew 538: if (&numerical_submission_is_correct($subm{'award'})) {
1.112 matthew 539: $stats{'correct_count'}++;
1.104 matthew 540: $submission_data{$subm{'correct'}}->{$submission}->[0]++;
541: } elsif (&numerical_submission_is_incorrect($subm{'award'})) {
1.112 matthew 542: $stats{'incorrect_count'}++;
1.104 matthew 543: $submission_data{$subm{'correct'}}->{$submission}->[1]++;
544: }
545: }
546: }
1.119 matthew 547: $stats{'correct_count'} |= 0;
548: $stats{'incorrect_count'} |= 0;
1.112 matthew 549: $stats{'students'}=scalar(keys(%students));
550: return (\%submission_data,\%stats);
1.104 matthew 551: }
552:
553: sub numerical_submission_is_correct {
554: my ($award) = @_;
555: if ($award =~ /^(APPROX_ANS|EXACT_ANS)$/) {
556: return 1;
557: } else {
558: return 0;
559: }
560: }
561:
562: sub numerical_submission_is_incorrect {
563: my ($award) = @_;
564: if ($award =~ /^(INCORRECT)$/) {
565: return 1;
566: } else {
567: return 0;
568: }
569: }
570:
571: sub numerical_bin_table {
572: my ($bins,$labels,$incorrect,$correct,$count)=@_;
573: my $table =
574: '<table><tr><th>'.&mt('Bar').'</th>'.
575: '<th colspan="3">'.&mt('Range').'</th>'.
576: '<th>'.&mt('Incorrect').'</th>'.
577: '<th>'.&mt('Correct').'</th>'.
578: '<th>'.&mt('Count').'</th>'.
579: '</tr>'.$/;
1.113 matthew 580: for (my $i=0;$i<scalar(@{$bins}-1);$i++) {
581: my $lownum = $bins->[$i];
1.114 matthew 582: if ($i == 0) { $lownum = '-∞'; }
1.113 matthew 583: my $highnum = $bins->[$i+1];
1.114 matthew 584: if ($i == scalar(@{$bins})-2) { $highnum = '∞'; }
1.103 matthew 585: $table .=
586: '<tr>'.
1.104 matthew 587: '<td>'.$labels->[$i].'</td>'.
1.103 matthew 588: '<td align="right">'.$lownum.'</td>'.
589: '<td> - </td>'.
1.104 matthew 590: '<td align="right">'.$highnum.'</td>'.
591: '<td align="right">'.$incorrect->[$i].'</td>'.
592: '<td align="right">'.$correct->[$i].'</td>'.
593: '<td align="right">'.$count->[$i].'</td>'.
594: '</tr>'.$/;
1.103 matthew 595: }
1.104 matthew 596: $table.= '</table>';
1.103 matthew 597: return $table;
1.66 matthew 598: }
599:
1.106 matthew 600: sub numerical_determine_answers {
1.103 matthew 601: my ($r,$resource,$partid,$respid,$students)=@_;
602: my $c = $r->connection();
1.78 matthew 603: #
1.112 matthew 604: my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin
605: ($r,'Student Answer Compilation Status',
606: 'Student Answer Compilation Progress', scalar(@$students),
607: 'inline',undef,'Statistics','stats_status');
1.103 matthew 608: #
609: # Read in the cache (if it exists) before we start timing things.
610: &Apache::lonstathelpers::ensure_proper_cache($resource->{'symb'});
611: #
612: my $correct;
613: my %answers;
614: foreach my $student (@$students) {
615: last if ($c->aborted());
616: my $sname = $student->{'username'};
617: my $sdom = $student->{'domain'};
618: # analyze problem
619: my $analysis =
620: &Apache::lonstathelpers::analyze_problem_as_student($resource,
621: $sname,
622: $sdom);
623: # make the key
624: my $key = $partid.'.'.$respid;
1.112 matthew 625: foreach my $item ('answer','unit','ans_high','ans_low') {
626: $correct->{$sname.':'.$sdom}->{$item} =
627: $analysis->{$key.'.'.$item}->[0];
628: }
1.103 matthew 629: $answers{$analysis->{$key.'.answer'}->[0]}++;
1.112 matthew 630: &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
631: &mt('last student'));
1.82 matthew 632: }
1.103 matthew 633: &Apache::lonstathelpers::write_analysis_cache();
1.112 matthew 634: &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
1.106 matthew 635: return ($correct,\%answers);
1.103 matthew 636: }
637:
1.104 matthew 638: #
639: # Inputs: $r, $width, $height, $data
640: # $n = number of students
641: # $data = hashref of $answer => $frequency pairs
1.103 matthew 642: sub numerical_one_dimensional_plot {
1.104 matthew 643: my ($r,$width,$height,$data)=@_;
1.78 matthew 644: #
1.103 matthew 645: # Compute data -> image scaling factors
1.78 matthew 646: my $max_y = 0;
1.103 matthew 647: my $min_x = undef;
648: my $max_x = undef;
1.104 matthew 649: my $n = 0;
1.103 matthew 650: while (my ($answer,$count) = each(%$data)) {
1.104 matthew 651: $n+=$count;
1.103 matthew 652: $max_y = $count if ($max_y < $count);
653: if (! defined($min_x) || $answer < $min_x) {
654: $min_x = $answer;
655: }
656: if (! defined($max_x) || $answer > $max_x) {
657: $max_x = $answer;
658: }
1.78 matthew 659: }
1.103 matthew 660: #
1.106 matthew 661: my $min_max_difference = $max_x - $min_x;
662: if (! defined($min_max_difference) || $min_max_difference == 0) {
663: $min_max_difference = 1;
664: }
665: my $h_scale = ($width-10)/$min_max_difference;
1.103 matthew 666: #
1.78 matthew 667: my $ticscale = 5;
668: if ($max_y * $ticscale > $height/2) {
669: $ticscale = int($height/2/$max_y);
670: $ticscale = 1 if ($ticscale < 1);
671: }
672: #
673: # Create the plot
674: my $plot =
675: qq{<drawimage width="$width" height="$height" bgcolor="transparent" >};
1.103 matthew 676: while (my ($answer,$count) = each(%$data)) {
677: my $xloc = 5+$h_scale*($answer - $min_x);
678: my $top = $height/2-$count*$ticscale;
679: my $bottom = $height/2+$count*$ticscale;
680: $plot .= &line($xloc,$top,$xloc,$bottom,'888888',1);
1.78 matthew 681: }
682: #
683: # Put the scale on last to ensure it is on top of the data.
1.103 matthew 684: if ($min_x < 0 && $max_x > 0) {
685: my $circle_x = 5+$h_scale*abs($min_x); # '0' in data coordinates
1.78 matthew 686: my $r = 4;
687: $plot .= &line(5,$height/2,$circle_x-$r,$height/2,'000000',1);
688: $plot .= &circle($circle_x,$height/2,$r+1,'000000');
689: $plot .= &line($circle_x+$r,$height/2,$width-5,$height/2,'000000',1);
690: } else {
691: $plot .= &line(5,$height/2,$width-5,$height/2,'000000',1);
692: }
693: $plot .= '</drawimage>';
694: my $plotresult = &Apache::lonxml::xmlparse($r,'web',$plot);
695: my $result = '<table>'.
696: '<tr><td colspan="3" align="center">'.
1.103 matthew 697: '<font size="+2">'.&mt('Distribution of correct answers').'</font>'.
698: '<br />'.&mt('[_1] students, [_2] distinct correct answers',
699: $n,scalar(keys(%$data))).
700: '<br />'.&mt('Maximum number of coinciding values: [_1]',$max_y).
1.78 matthew 701: '</td></tr>'.
702: '<tr>'.
1.103 matthew 703: '<td valign="center">'.$min_x.'</td>'.
1.78 matthew 704: '<td>'.$plotresult.'</td>'.
1.103 matthew 705: '<td valign="center">'.$max_x.'</td>'.
1.78 matthew 706: '</tr>'.
707: '</table>';
708: return $result;
709: }
710:
711: ##
712: ## Helper subroutines for <drawimage>.
713: ## These should probably go somewhere more suitable soon.
714: sub line {
715: my ($x1,$y1,$x2,$y2,$color,$thickness) = @_;
1.103 matthew 716: return qq{<line x1="$x1" y1="$y1" x2="$x2" y2="$y2" color="$color" thickness="$thickness" />};
1.78 matthew 717: }
718:
1.82 matthew 719: sub text {
720: my ($x,$y,$color,$text,$font,$direction) = @_;
721: if (! defined($font) || $font !~ /^(tiny|small|medium|large|giant)$/) {
722: $font = 'medium';
723: }
724: if (! defined($direction) || $direction ne 'vertical') {
725: $direction = '';
726: }
727: return qq{<text x="$x" y="$y" color="$color" font="$font" direction="$direction" >$text</text>};
728: }
729:
1.78 matthew 730: sub rectangle {
731: my ($x1,$y1,$x2,$y2,$color,$thickness,$filled) = @_;
732: return qq{<rectangle x1="$x1" y1="$y1" x2="$x2" y2="$y2" color="$color" thickness="$thickness" filled="$filled" />};
733: }
734:
735: sub arc {
736: my ($x,$y,$width,$height,$start,$end,$color,$thickness,$filled)=@_;
737: return qq{<arc x="$x" y="$y" width="$width" height="$height" start="$start" end="$end" color="$color" thickness="$thickness" filled="$filled" />};
738: }
739:
740: sub circle {
741: my ($x,$y,$radius,$color,$thickness,$filled)=@_;
742: return &arc($x,$y,$radius,$radius,0,360,$color,$thickness,$filled);
1.68 matthew 743: }
744:
1.47 matthew 745: #########################################################
746: #########################################################
747: ##
748: ## Radio Response Routines
749: ##
750: #########################################################
751: #########################################################
1.97 matthew 752: sub radio_response_analysis {
1.94 matthew 753: my ($r,$problem,$problem_analysis,$students) = @_;
1.97 matthew 754: #
1.120 albertel 755: if ($env{'form.AnalyzeOver'} !~ /^(tries|time)$/) {
1.94 matthew 756: $r->print('Bad request');
757: }
1.97 matthew 758: #
1.94 matthew 759: my ($resource,$partid,$respid) = ($problem->{'resource'},
760: $problem->{'part'},
761: $problem->{'respid'});
762: #
763: my $analysis_html;
764: my $foildata = $problem_analysis->{'_Foils'};
765: my ($table,$foils,$concepts) = &build_foil_index($problem_analysis);
1.106 matthew 766: if (! defined($concepts)) {
767: $concepts = [];
768: }
1.97 matthew 769: #
1.98 matthew 770: my %true_foils;
1.97 matthew 771: my $num_true = 0;
1.98 matthew 772: if (! $problem_analysis->{'answercomputed'}) {
773: foreach my $foil (@$foils) {
774: if ($foildata->{$foil}->{'value'} eq 'true') {
775: $true_foils{$foil}++;
776: }
1.97 matthew 777: }
1.98 matthew 778: $num_true = scalar(keys(%true_foils));
1.97 matthew 779: }
780: #
1.94 matthew 781: $analysis_html .= $table;
782: # Gather student data
783: my $response_data = &Apache::loncoursedata::get_response_data
1.118 matthew 784: ([&Apache::lonstatistics::get_selected_sections()],
1.94 matthew 785: $Apache::lonstatistics::enrollment_status,
1.116 matthew 786: $resource->symb,$respid);
1.94 matthew 787: my $correct; # either a hash reference or a scalar
788: if ($problem_analysis->{'answercomputed'} || scalar(@$concepts) > 1) {
789: # This takes a while for large classes...
790: &Apache::lonstathelpers::GetStudentAnswers($r,$problem,$students,
791: 'Statistics',
792: 'stats_status');
793: foreach my $student (@$students) {
794: my ($idx,@remainder) = split('&',$student->{'answer'});
795: my ($answer) = ($remainder[$idx]=~/^(.*)=([^=]*)$/);
796: $correct->{$student->{'username'}.':'.$student->{'domain'}}=
797: &Apache::lonnet::unescape($answer);
798: }
799: } else {
800: foreach my $foil (keys(%$foildata)) {
801: if ($foildata->{$foil}->{'value'} eq 'true') {
802: $correct = $foildata->{$foil}->{'name'};
803: }
804: }
805: }
1.97 matthew 806: #
807: if (! defined($response_data) || ref($response_data) ne 'ARRAY' ) {
1.94 matthew 808: $analysis_html = '<h2>'.
809: &mt('There is no submission data for this resource').
810: '</h2>';
811: $r->print($analysis_html);
812: return;
813: }
814: #
815: $analysis_html.='<table>';
1.120 albertel 816: for (my $plot_num = 1;$plot_num<=$env{'form.NumPlots'};$plot_num++) {
1.94 matthew 817: # classify data ->correct foil -> selected foil
1.97 matthew 818: my ($restriction_function,
819: $correct_foil_title,$incorrect_foil_title,
820: $pre_graph_text,$post_graph_text,
821: $no_data_text,@extra_data);
1.120 albertel 822: if ($env{'form.AnalyzeOver'} eq 'tries') {
1.97 matthew 823: $restriction_function = sub {($_[0]->{'tries'} == $plot_num?1:0)};
824: $correct_foil_title = 'Attempt '.$plot_num;
825: $incorrect_foil_title = 'Attempt '.$plot_num;
826: $pre_graph_text =
827: 'Attempt [_1], [_2] submissions, [_3] correct, [_4] incorrect';
828: $post_graph_text = '';
829: $no_data_text = 'No data exists for attempt [_1]';
1.120 albertel 830: } elsif ($env{'form.AnalyzeOver'} eq 'time') {
1.97 matthew 831: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
832: ('startdate_'.$plot_num);
833: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
834: ('enddate_'.$plot_num);
835: ($starttime,$endtime) = &ensure_start_end_times
836: ($starttime,$endtime,
837: &get_time_from_row($response_data->[0]),
838: &get_time_from_row($response_data->[-1]),
839: $plot_num);
840: $pre_graph_text =
1.102 matthew 841: 'Data from [_6] to [_7]<br /> [_2] submissions from [_5] students, [_3] correct, [_4] incorrect';
1.97 matthew 842: $extra_data[0] = &Apache::lonlocal::locallocaltime($starttime);
843: $extra_data[1] = &Apache::lonlocal::locallocaltime($endtime);
844: #
845: $post_graph_text =
846: &mt('Start time: [_1]',
847: &Apache::lonhtmlcommon::date_setter
848: ('Statistics','startdate_'.$plot_num,$starttime)).
849: '<br />'.
850: &mt('End time: [_1]',
851: &Apache::lonhtmlcommon::date_setter
852: ('Statistics','enddate_'.$plot_num,$endtime));
853: $restriction_function =
854: sub {
855: my $t = $_[0]->{'timestamp'};
856: if ($t >= $starttime && $t < $endtime) {
857: return 1;
858: } else {
859: return 0;
860: }
861: };
862: $no_data_text = 'No data for [_5] to [_6]';
863: }
864: my $foil_choice_data =
1.103 matthew 865: &classify_response_data($response_data,$correct,
866: $restriction_function);
1.97 matthew 867: # &Apache::lonstathelpers::log_hash_ref($foil_choice_data);
1.94 matthew 868: my $answers;
869: if (ref($correct)) {
870: my %tmp;
871: foreach my $foil (values(%$correct)) {
872: $tmp{$foil}++;
873: }
874: $answers = [keys(%tmp)];
875: } else {
876: $answers = [$correct];
877: }
878: # Concept Plot
879: my $concept_plot = '';
880: if (scalar(@$concepts) > 1) {
881: $concept_plot = &RR_concept_plot($concepts,$foil_choice_data,
1.97 matthew 882: 'Correct Concepts');
1.94 matthew 883: }
884: # % Choosing plot
885: my $choice_plot = &RR_create_percent_selected_plot
1.97 matthew 886: ($concepts,$foils,$foil_choice_data,$correct_foil_title);
1.94 matthew 887: # for each correct foil, how did they mark it? (stacked bar graph)
1.97 matthew 888: my ($stacked_plot,$count_by_foil);
889: if ($problem_analysis->{'answercomputed'} || $num_true > 1) {
890: ($stacked_plot,$count_by_foil) =
891: &RR_create_stacked_selection_plot($foils,$foil_choice_data,
1.98 matthew 892: $incorrect_foil_title,
893: \%true_foils);
1.97 matthew 894: }
1.94 matthew 895: #
896: if ($concept_plot ne '' ||
1.97 matthew 897: $choice_plot ne '' ||
1.94 matthew 898: $stacked_plot ne '') {
1.97 matthew 899: my $correct = $foil_choice_data->{'_correct'};
1.119 matthew 900: $correct |= 0;
901: my $incorrect = $foil_choice_data->{'_count'}-$correct;
1.97 matthew 902: $analysis_html.= '<tr><td colspan="4" align="center">'.
903: '<font size="+1">'.
904: &mt($pre_graph_text,
905: $plot_num,$foil_choice_data->{'_count'},
1.102 matthew 906: $correct,
1.119 matthew 907: $incorrect,
1.102 matthew 908: $foil_choice_data->{'_students'},
1.97 matthew 909: @extra_data).
910: '</td></tr>'.$/;
1.94 matthew 911: $analysis_html.=
912: '<tr>'.
913: '<td>'.$concept_plot.'</td>'.
914: '<td>'.$choice_plot.'</td>';
915: if ($stacked_plot ne '') {
916: $analysis_html .=
1.97 matthew 917: '<td>'.$stacked_plot.'</td>'.
918: '<td>'.&build_foil_key($foils,$count_by_foil).'</td>';
1.94 matthew 919: } else {
920: $analysis_html .= ('<td></td>'x2);
921: }
922: $analysis_html.='</tr>'.$/;
1.97 matthew 923: if (defined($post_graph_text)) {
924: $analysis_html.= '<tr><td colspan="4" align="center">'.
925: $post_graph_text.'</td></tr>'.$/;
926: }
927: } elsif ($no_data_text ne '') {
928: $analysis_html.='<tr><td colspan="4" align="center">'.
929: &mt($no_data_text,
930: $plot_num,$foil_choice_data->{'_count'},
931: $correct,
932: $foil_choice_data->{'_count'}-$correct,
933: @extra_data);
934: if (defined($post_graph_text)) {
935: $analysis_html.='<br />'.$post_graph_text;
936: }
937: $analysis_html.='</td></tr>'.$/;
1.94 matthew 938: }
1.97 matthew 939: } # end of loop for plots
1.94 matthew 940: $analysis_html.='</table>';
941: $r->print($analysis_html);
942: }
943:
1.97 matthew 944: sub ensure_start_end_times {
945: my ($start,$end,$first,$last,$plot_num) = @_;
946: if (! defined($start) || ! defined($end)) {
947: my $sec_in_day = 86400;
948: my ($sday,$smon,$syear) =
949: (localtime($last - $sec_in_day*($plot_num-1)))[3..5];
950: $start = &Time::Local::timelocal(0,0,0,$sday,$smon,$syear);
951: $end = $start + $sec_in_day;
1.120 albertel 952: if ($plot_num == $env{'form.NumPlots'}) {
1.97 matthew 953: $start = $first;
954: }
955: }
956: return ($start,$end);
957: }
1.94 matthew 958:
959: sub RR_concept_plot {
960: my ($concepts,$foil_data,$title) = @_;
961: #
962: my %correct_by_concept;
963: my %incorrect_by_concept;
964: my %true;
965: foreach my $concept (@$concepts) {
966: foreach my $foil (@{$concept->{'foils'}}) {
967: next if (! exists($foil_data->{$foil}));
968: foreach my $choice (keys(%{$foil_data->{$foil}})) {
969: if ($choice eq $foil) {
970: $correct_by_concept{$concept->{'name'}} +=
971: $foil_data->{$foil}->{$choice};
972: } else {
973: $incorrect_by_concept{$concept->{'name'}} +=
974: $foil_data->{$foil}->{$choice};
975: }
976: }
977: }
978: }
979: #
980: # need arrays for incorrect and correct because we want to use different
981: # colors for them
982: my @correct;
983: #
984: my $total =0;
985: for (my $i=0;$i<scalar(@$concepts);$i++) {
986: my $concept = $concepts->[$i];
987: $correct[$i] = $correct_by_concept{$concept->{'name'}};
988: $total += $correct_by_concept{$concept->{'name'}}+
989: $incorrect_by_concept{$concept->{'name'}};
990: }
991: if ($total == 0) { return ''; };
992: for (my $i=0;$i<=$#correct;$i++) {
993: $correct[$i] = sprintf('%0f',$correct[$i]/$total*100);
994: }
995: my $xlabel = 'concept';
996: my $plot= &Apache::loncommon::DrawBarGraph($title,
997: $xlabel,
998: 'Percent Choosing',
999: 100,
1000: ['#33ff00','#ff3300'],
1001: undef,
1002: \@correct);
1003: return $plot;
1004: }
1005:
1006: sub RR_create_percent_selected_plot {
1.97 matthew 1007: my ($concepts,$foils,$foil_data,$title) = @_;
1.94 matthew 1008: #
1.99 matthew 1009: if ($foil_data->{'_count'} == 0) { return ''; };
1010: my %correct_selections;
1011: my %incorrect_selections;
1.94 matthew 1012: foreach my $foil (@$foils) {
1.101 matthew 1013: # foil_data has format $foil_data->{true_foil}->{selected foil}=count
1.94 matthew 1014: next if (! exists($foil_data->{$foil}));
1015: while (my ($f,$count)= each(%{$foil_data->{$foil}})) {
1.99 matthew 1016: if ($f eq $foil) {
1017: $correct_selections{$foil} += $count;
1018: } else {
1.101 matthew 1019: $incorrect_selections{$f} += $count;
1.99 matthew 1020: }
1.94 matthew 1021: }
1022: }
1023: #
1024: # need arrays for incorrect and correct because we want to use different
1025: # colors for them
1026: my @correct;
1027: my @incorrect;
1028: #
1.99 matthew 1029: my $total = $foil_data->{'_count'};
1.94 matthew 1030: for (my $i=0;$i<scalar(@$foils);$i++) {
1031: my $foil = $foils->[$i];
1.99 matthew 1032: $correct[$i] = $correct_selections{$foil};
1033: $incorrect[$i] = $incorrect_selections{$foil};
1.94 matthew 1034: }
1035: for (my $i=0;$i<=$#correct;$i++) {
1.99 matthew 1036: $correct[$i] = sprintf('%2f',$correct[$i]/$total*100);
1.94 matthew 1037: }
1038: for (my $i=0;$i<=$#incorrect;$i++) {
1.99 matthew 1039: $incorrect[$i] = sprintf('%2f',$incorrect[$i]/$total*100);
1.94 matthew 1040: }
1.97 matthew 1041: #
1042: # Put a blank in the data sets between concepts, if there are concepts
1043: my @labels;
1044: if (defined($concepts) && scalar(@$concepts) > 1) {
1045: my @new_correct;
1046: my @new_incorrect;
1047: my $foil_count = 0;
1048: foreach my $concept (@$concepts) {
1049: foreach (@{$concept->{'foils'}}) {
1050: push(@new_correct, $correct[$foil_count]);
1051: push(@new_incorrect,$incorrect[$foil_count]);
1052: push(@labels,++$foil_count);
1053: }
1054: push(@new_correct,'');
1055: push(@new_incorrect,'');
1056: push(@labels,'');
1057: }
1058: @correct = @new_correct;
1059: @incorrect = @new_incorrect;
1060: } else {
1061: @labels = (1 .. scalar(@correct));
1062: }
1063: #
1.94 matthew 1064: my $xlabel = 'foil chosen';
1065: my $plot= &Apache::loncommon::DrawBarGraph($title,
1066: $xlabel,
1067: 'Percent Choosing',
1068: 100,
1069: ['#33ff00','#ff3300'],
1.97 matthew 1070: \@labels,
1.94 matthew 1071: \@correct,
1072: \@incorrect);
1073: return $plot;
1074: }
1075:
1076: sub RR_create_stacked_selection_plot {
1.98 matthew 1077: my ($foils,$foil_data,$title,$true_foils)=@_;
1.94 matthew 1078: #
1.97 matthew 1079: my @dataset; # array of array refs - multicolor rows $datasets[row]->[col]
1.94 matthew 1080: my @labels;
1.97 matthew 1081: my $count;
1082: my %column; # maps foil name to column in @datasets
1.94 matthew 1083: for (my $i=0;$i<scalar(@$foils);$i++) {
1.98 matthew 1084: my $foil = $foils->[$i];
1085: if (defined($true_foils) && scalar(keys(%$true_foils)) > 0 ) {
1086: next if (! $true_foils->{$foil} );
1087: push(@labels,$i+1);
1088: } else {
1089: next if (! exists($foil_data->{$foil}));
1090: push(@labels,$i+1);
1091: }
1.94 matthew 1092: next if (! exists($foil_data->{$foils->[$i]}));
1.98 matthew 1093: $column{$foil}= $count++;
1.94 matthew 1094: for (my $j=0;$j<scalar(@$foils);$j++) {
1095: my $value = 0;
1096: if ($i != $j ) {
1.98 matthew 1097: $value += $foil_data->{$foil}->{$foils->[$j]};
1.94 matthew 1098: }
1.98 matthew 1099: $dataset[$j]->[$column{$foil}]=$value;
1.94 matthew 1100: }
1101: }
1102: #
1103: return '' if (! scalar(keys(%column)));
1104: #
1105: my $grand_total = 0;
1106: my %count_per_foil;
1107: while (my ($foil,$bar) = each (%column)) {
1108: my $bar_total = 0;
1109: for (my $j=0;$j<scalar(@dataset);$j++) {
1110: $bar_total += $dataset[$j]->[$bar];
1111: }
1112: next if ($bar_total == 0);
1113: for (my $j=0;$j<scalar(@dataset);$j++) {
1114: $dataset[$j]->[$bar] =
1115: sprintf('%2f',$dataset[$j]->[$bar]/$bar_total * 100);
1116: }
1.97 matthew 1117: $count_per_foil{$foil}=' ( '.$bar_total.' )';
1.94 matthew 1118: $grand_total += $bar_total;
1119: }
1120: if ($grand_total == 0) {
1121: return ('',undef);
1122: }
1123: my @empty_row = ();
1124: foreach (@{$dataset[0]}) {
1125: push(@empty_row,0);
1126: }
1127: #
1128: my $graph = &Apache::loncommon::DrawBarGraph
1129: ($title,'Correct Foil','foils chosen Incorrectly',
1130: 100,$plotcolors,\@labels,\@empty_row,@dataset);
1131: return ($graph,\%count_per_foil);
1132: }
1133:
1.103 matthew 1134:
1135: #########################################################
1136: #########################################################
1137: ##
1138: ## Misc routines
1139: ##
1140: #########################################################
1141: #########################################################
1142:
1.94 matthew 1143: # if $correct is a hash ref, it is assumed to be indexed by student names.
1144: # the values are assumed to be hash refs with a key of 'answer'.
1.103 matthew 1145: sub classify_response_data {
1.94 matthew 1146: my ($full_row_data,$correct,$function) = @_;
1147: my %submission_data;
1.102 matthew 1148: my %students;
1.103 matthew 1149: my $max=0;
1.94 matthew 1150: foreach my $row (@$full_row_data) {
1151: my %subm = &hashify_attempt($row);
1152: if (ref($correct) eq 'HASH') {
1153: $subm{'correct'} = $correct->{$subm{'student'}};
1154: } else {
1155: $subm{'correct'} = $correct;
1156: }
1157: $subm{'submission'} =~ s/=\d+\s*$//;
1158: if (&$function(\%subm)) {
1.102 matthew 1159: $students{$subm{'student'}}++;
1.97 matthew 1160: $submission_data{'_count'}++;
1161: if (&submission_is_correct($subm{'award'})) {
1162: $submission_data{'_correct'}++;
1163: }
1.103 matthew 1164:
1165: if($max<++$submission_data{$subm{'correct'}}->{$subm{'submission'}}) {
1166: $max=$submission_data{$subm{'correct'}}->{$subm{'submission'}};
1167: }
1.94 matthew 1168: }
1169: }
1.103 matthew 1170: $submission_data{'_max'} = $max;
1.102 matthew 1171: $submission_data{'_students'}=scalar(keys(%students));
1.94 matthew 1172: return \%submission_data;
1173: }
1174:
1175:
1.33 matthew 1176: #########################################################
1177: #########################################################
1178: ##
1.46 matthew 1179: ## Option Response Routines
1.33 matthew 1180: ##
1181: #########################################################
1182: #########################################################
1.46 matthew 1183: sub OptionResponseAnalysis {
1.88 matthew 1184: my ($r,$problem,$problem_data,$Students) = @_;
1.56 matthew 1185: my ($resource,$respid) = ($problem->{'resource'},
1186: $problem->{'respid'});
1187: # Note: part data is not needed.
1.82 matthew 1188: my $PerformanceData = &Apache::loncoursedata::get_response_data
1.118 matthew 1189: ([&Apache::lonstatistics::get_selected_sections()],
1.82 matthew 1190: $Apache::lonstatistics::enrollment_status,
1.116 matthew 1191: $resource->symb,$respid);
1.46 matthew 1192: if (! defined($PerformanceData) ||
1193: ref($PerformanceData) ne 'ARRAY' ) {
1194: $r->print('<h2>'.
1195: &mt('There is no student data for this problem.').
1196: '</h2>');
1197: } else {
1198: $r->rflush();
1.120 albertel 1199: if ($env{'form.AnalyzeOver'} eq 'tries') {
1.111 matthew 1200: my $analysis_html = &OR_tries_analysis($r,
1201: $PerformanceData,
1202: $problem_data);
1203: $r->print($analysis_html);
1204: $r->rflush();
1.120 albertel 1205: } elsif ($env{'form.AnalyzeOver'} eq 'time') {
1.111 matthew 1206: my $analysis_html = &OR_time_analysis($PerformanceData,
1207: $problem_data);
1208: $r->print($analysis_html);
1.46 matthew 1209: $r->rflush();
1.39 matthew 1210: } else {
1.111 matthew 1211: $r->print('<h2>'.
1212: &mt('The analysis you have selected is '.
1213: 'not supported at this time').
1214: '</h2>');
1.36 matthew 1215: }
1.39 matthew 1216: }
1217: }
1218:
1.33 matthew 1219: #########################################################
1.46 matthew 1220: #
1.94 matthew 1221: # Option Response: tries Analysis
1.46 matthew 1222: #
1.33 matthew 1223: #########################################################
1.57 matthew 1224: sub OR_tries_analysis {
1.43 matthew 1225: my ($r,$PerformanceData,$ORdata) = @_;
1.33 matthew 1226: my $mintries = 1;
1.120 albertel 1227: my $maxtries = $env{'form.NumPlots'};
1.39 matthew 1228: my ($table,$Foils,$Concepts) = &build_foil_index($ORdata);
1.107 matthew 1229: if (! defined($Concepts)) {
1230: $Concepts = [];
1231: }
1.88 matthew 1232: my %response_data = &OR_analyze_by_tries($r,$PerformanceData,
1.36 matthew 1233: $mintries,$maxtries);
1.42 matthew 1234: my $analysis = '';
1.31 matthew 1235: #
1.88 matthew 1236: # Compute the data necessary to make the plots
1237: my @foil_plot;
1238: my @concept_data;
1239: for (my $j=0;$j<=scalar(@$Concepts);$j++) {
1240: my $concept = $Concepts->[$j];
1.75 matthew 1241: foreach my $foilid (@{$concept->{'foils'}}) {
1.76 matthew 1242: for (my $try=$mintries;$try<=$maxtries;$try++) {
1.88 matthew 1243: # concept analysis data
1.93 matthew 1244: $concept_data[$j]->[$try]->{'_correct'} +=
1.88 matthew 1245: $response_data{$foilid}->[$try]->{'_correct'};
1.93 matthew 1246: $concept_data[$j]->[$try]->{'_total'} +=
1.88 matthew 1247: $response_data{$foilid}->[$try]->{'_total'};
1248: #
1249: # foil analysis data
1250: if ($response_data{$foilid}->[$try]->{'_total'} == 0) {
1251: push(@{$foil_plot[$try]->{'_correct'}},0);
1.42 matthew 1252: } else {
1.88 matthew 1253: push(@{$foil_plot[$try]->{'_correct'}},
1254: 100*$response_data{$foilid}->[$try]->{'_correct'}/
1255: $response_data{$foilid}->[$try]->{'_total'});
1.75 matthew 1256: }
1257: foreach my $option (@{$ORdata->{'_Options'}}) {
1.88 matthew 1258: push(@{$foil_plot[$try]->{'_total'}},
1259: $response_data{$foilid}->[$try]->{'_total'});
1260: if ($response_data{$foilid}->[$try]->{'_total'} == 0) {
1261: push (@{$foil_plot[$try]->{$option}},0);
1.39 matthew 1262: } else {
1.88 matthew 1263: if ($response_data{$foilid}->[$try]->{'_total'} ==
1264: $response_data{$foilid}->[$try]->{'_correct'}) {
1265: push(@{$foil_plot[$try]->{$option}},0);
1.75 matthew 1266: } else {
1.88 matthew 1267: push (@{$foil_plot[$try]->{$option}},
1.76 matthew 1268: 100 *
1.88 matthew 1269: $response_data{$foilid}->[$try]->{$option} /
1270: ($response_data{$foilid}->[$try]->{'_total'}
1.76 matthew 1271: -
1.88 matthew 1272: $response_data{$foilid}->[$try]->{'_correct'}
1.76 matthew 1273: ));
1.75 matthew 1274: }
1.39 matthew 1275: }
1.76 matthew 1276: } # End of foreach my $option
1.36 matthew 1277: }
1.76 matthew 1278: } # End of foreach my $foilid
1.88 matthew 1279: } # End of concept loops
1.42 matthew 1280: #
1281: # Build a table for the plots
1.96 matthew 1282: my $analysis_html = "<br /><table>\n";
1.75 matthew 1283: my $optionkey = &build_option_index($ORdata);
1.88 matthew 1284: my $num_concepts = 1;
1285: if (defined($Concepts)) { $num_concepts = scalar(@$Concepts); }
1286: #
1.75 matthew 1287: for (my $try=$mintries;$try<=$maxtries;$try++) {
1.92 matthew 1288: if (! defined($response_data{'_total'}->[$try]) ||
1289: $response_data{'_total'}->[$try] == 0) {
1290: if ($try > 1) {
1291: $analysis_html.= '<tr><td align="center" colspan="4"><b>'.
1292: &mt('None of the selected students attempted the problem more than [_1] times.',$try-1).
1293: '</b></td></tr>';
1294: } else {
1295: $analysis_html.= '<tr><td colspan="4" align="center"><b>'.
1296: &mt('None of the selected students have attempted the problem').'</b></td></tr>';
1297: }
1298: last;
1299: }
1.88 matthew 1300: my $concept_graph='';
1301: if ($num_concepts > 1) {
1302: #
1303: # Create concept plot
1304: my @concept_plot_data;
1305: for (my $j=0;$j<=$#concept_data;$j++) {
1.93 matthew 1306: my $total = $concept_data[$j]->[$try]->{'_total'};
1.88 matthew 1307: if ($total == 0) {
1308: $concept_plot_data[$j] = 0;
1309: } else {
1310: $concept_plot_data[$j] = 100 *
1311: sprintf('%0.3f',
1.93 matthew 1312: $concept_data[$j]->[$try]->{'_correct'} /
1313: $total);
1.88 matthew 1314: }
1315: }
1316: #
1317: $concept_graph = &Apache::loncommon::DrawBarGraph
1.96 matthew 1318: ('Correct Concepts','Concept Number','Percent Correct',
1.105 matthew 1319: 100,$plotcolors,undef,\@concept_plot_data,{xskip=>1});
1.88 matthew 1320: }
1321: #
1322: # Create Foil Plots
1.96 matthew 1323: my $data_count = $response_data{'_total'}->[$try];
1324: my $correct = $response_data{'_correct'}->[$try];
1.119 matthew 1325: $correct |= 0;
1.42 matthew 1326: my @Datasets;
1.48 matthew 1327: foreach my $option ('_correct',@{$ORdata->{'_Options'}}) {
1.88 matthew 1328: next if (! exists($foil_plot[$try]->{$option}));
1329: push(@Datasets,$foil_plot[$try]->{$option});
1.42 matthew 1330: }
1.76 matthew 1331: #
1332: # Put a blank in the data set between concepts
1333: for (my $set =0;$set<=$#Datasets;$set++) {
1334: my @Data = @{$Datasets[$set]};
1335: my $idx = 0;
1336: foreach my $concept (@{$Concepts}) {
1337: foreach my $foilid (@{$concept->{'foils'}}) {
1338: $Datasets[$set]->[$idx++]=shift(@Data);
1339: }
1340: if ($concept->{'name'} ne $Concepts->[-1]->{'name'}) {
1341: $Datasets[$set]->[$idx++] = 0;
1342: }
1343: }
1344: }
1345: #
1346: # Set up the labels needed for the bar graph
1347: my @Labels;
1348: my $idx = 1;
1349: foreach my $concept (@{$Concepts}) {
1350: foreach my $foilid (@{$concept->{'foils'}}) {
1351: push(@Labels,$idx++);
1352: }
1353: push(@Labels,'');
1354: }
1355: #
1.88 matthew 1356: my $correct_graph = &Apache::loncommon::DrawBarGraph
1.96 matthew 1357: ('Correct Statements','Statement','% Answered Correct',
1.105 matthew 1358: 100,$plotcolors,\@Labels,$Datasets[0],{xskip=>1});
1.75 matthew 1359:
1360: #
1361: #
1.57 matthew 1362: next if (! defined($Datasets[0]));
1.42 matthew 1363: for (my $i=0; $i< scalar(@{$Datasets[0]});$i++) {
1364: $Datasets[0]->[$i]=0;
1365: }
1.96 matthew 1366: my $count = $response_data{'_total'}->[$try] -
1.88 matthew 1367: $response_data{'_correct'}->[$try];
1368: my $incorrect_graph = &Apache::loncommon::DrawBarGraph
1.96 matthew 1369: ('Incorrect Statements','Statement','% Chosen Incorrectly',
1.105 matthew 1370: 100,$plotcolors,\@Labels,@Datasets,{xskip=>1});
1.88 matthew 1371: $analysis_html.=
1.96 matthew 1372: '<tr><td colspan="4" align="center">'.
1373: '<font size="+1">'.
1374: &mt('Attempt [_1], [_2] submissions, [_3] correct, [_4] incorrect',
1375: $try,$data_count,$correct,$data_count-$correct).
1376: '</font>'.'</td></tr>'.$/.
1.88 matthew 1377: '<tr>'.
1378: '<td>'.$concept_graph.'</td>'.
1379: '<td>'.$correct_graph.'</td>'.
1380: '<td>'.$incorrect_graph.'</td>'.
1381: '<td>'.$optionkey.'<td>'.
1382: '</tr>'.$/;
1.42 matthew 1383: }
1384: $analysis_html .= "</table>\n";
1.88 matthew 1385: $table .= $analysis_html;
1386: return $table;
1.25 matthew 1387: }
1388:
1.57 matthew 1389: sub OR_analyze_by_tries {
1.43 matthew 1390: my ($r,$PerformanceData,$mintries,$maxtries) = @_;
1.25 matthew 1391: my %Trydata;
1392: $mintries = 1 if (! defined($mintries) || $mintries < 1);
1393: $maxtries = $mintries if (! defined($maxtries) || $maxtries < $mintries);
1.96 matthew 1394: my @students;
1.26 matthew 1395: foreach my $row (@$PerformanceData) {
1396: next if (! defined($row));
1.47 matthew 1397: my $tries = &get_tries_from_row($row);
1.46 matthew 1398: my %Row = &Process_OR_Row($row);
1.43 matthew 1399: next if (! %Row);
1.96 matthew 1400: my $student_id = $row->[&Apache::loncoursedata::RD_student_id()];
1401: $students[$tries]->{$student_id}++;
1.42 matthew 1402: while (my ($foilid,$href) = each(%Row)) {
1403: if (! ref($href)) {
1404: $Trydata{$foilid}->[$tries] += $href;
1405: next;
1406: }
1407: while (my ($option,$value) = each(%$href)) {
1408: $Trydata{$foilid}->[$tries]->{$option}+=$value;
1.25 matthew 1409: }
1410: }
1411: }
1.96 matthew 1412: for (my $try=$mintries;$try<=$maxtries;$try++) {
1413: $Trydata{'_studentcount'}->[$try] = scalar(keys(%{$students[$try]}));
1414: }
1.25 matthew 1415: return %Trydata;
1416: }
1417:
1.33 matthew 1418: #########################################################
1.46 matthew 1419: #
1420: # Option Response: Time Analysis
1421: #
1.33 matthew 1422: #########################################################
1.57 matthew 1423: sub OR_time_analysis {
1.88 matthew 1424: my ($performance_data,$ORdata) = @_;
1.42 matthew 1425: my ($table,$Foils,$Concepts) = &build_foil_index($ORdata);
1.88 matthew 1426: my $foilkey = &build_option_index($ORdata);
1427: my $num_concepts = 1;
1428: if (defined($Concepts)) { $num_concepts = scalar(@$Concepts); }
1429: #
1430: if ($num_concepts < 2) {
1.42 matthew 1431: $table = '<h3>'.
1432: &mt('Not enough data for concept analysis. '.
1433: 'Performing Foil Analysis').
1.88 matthew 1434: '</h3>'.$table;
1.42 matthew 1435: }
1.88 matthew 1436: #
1.120 albertel 1437: my $num_plots = $env{'form.NumPlots'};
1.88 matthew 1438: my $num_data = scalar(@$performance_data)-1;
1.42 matthew 1439: #
1.96 matthew 1440: my $current_index;
1.37 matthew 1441: $table .= "<table>\n";
1.33 matthew 1442: for (my $i=0;$i<$num_plots;$i++) {
1.42 matthew 1443: ##
1.34 matthew 1444: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
1445: ('startdate_'.$i);
1446: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
1447: ('enddate_'.$i);
1448: if (! defined($starttime) || ! defined($endtime)) {
1.42 matthew 1449: my $sec_in_day = 86400;
1.88 matthew 1450: my $last_sub_time = &get_time_from_row($performance_data->[-1]);
1.96 matthew 1451: my ($sday,$smon,$syear) =
1452: (localtime($last_sub_time - $sec_in_day*$i))[3..5];
1.42 matthew 1453: $starttime = &Time::Local::timelocal(0,0,0,$sday,$smon,$syear);
1454: $endtime = $starttime + $sec_in_day;
1455: if ($i == ($num_plots -1 )) {
1.88 matthew 1456: $starttime = &get_time_from_row($performance_data->[0]);
1.42 matthew 1457: }
1458: }
1.96 matthew 1459: $table .= '<tr><td colspan="4" align="center"><font size="+1">'.
1.88 matthew 1460: &mt('Data from [_1] to [_2]',
1461: &Apache::lonlocal::locallocaltime($starttime),
1.96 matthew 1462: &Apache::lonlocal::locallocaltime($endtime)).
1463: '</font></td></tr>'.$/;
1.34 matthew 1464: my $startdateform = &Apache::lonhtmlcommon::date_setter
1465: ('Statistics','startdate_'.$i,$starttime);
1466: my $enddateform = &Apache::lonhtmlcommon::date_setter
1467: ('Statistics','enddate_'.$i,$endtime);
1.42 matthew 1468: #
1469: my $begin_index;
1470: my $end_index;
1471: my $j;
1.88 matthew 1472: while (++$j < scalar(@$performance_data)) {
1473: last if (&get_time_from_row($performance_data->[$j])
1.46 matthew 1474: > $starttime);
1.42 matthew 1475: }
1476: $begin_index = $j;
1.91 matthew 1477: while ($j < scalar(@$performance_data)) {
1478: if (&get_time_from_row($performance_data->[$j]) > $endtime) {
1479: last;
1480: } else {
1481: $j++;
1482: }
1.42 matthew 1483: }
1484: $end_index = $j;
1485: ##
1.96 matthew 1486: my ($processed_time_data,$correct,$data_count,$student_count) =
1487: &OR_time_process_data($performance_data,$begin_index,$end_index);
1.119 matthew 1488: $correct |= 0;
1.96 matthew 1489: ##
1490: $table .= '<tr><td colspan="4" align="center"><font size="+1">'.
1.102 matthew 1491: &mt('[_1] submissions from [_2] students, [_3] correct, [_4] incorrect',
1.96 matthew 1492: $data_count,$student_count,$correct,$data_count-$correct).
1493: '</font></td></tr>'.$/;
1.88 matthew 1494: my $concept_correct_plot = '';
1495: if ($num_concepts > 1) {
1496: $concept_correct_plot =
1.96 matthew 1497: &OR_Concept_Time_Analysis($processed_time_data,
1498: $correct,$data_count,$student_count,
1499: $ORdata,$Concepts);
1.42 matthew 1500: }
1.88 matthew 1501: my ($foil_correct_plot,$foil_incorrect_plot) =
1.96 matthew 1502: &OR_Foil_Time_Analysis($processed_time_data,
1503: $correct,$data_count,$student_count,
1504: $ORdata,$Foils,$Concepts);
1.88 matthew 1505: $table .= '<tr>'.
1506: '<td>'.$concept_correct_plot.'</td>'.
1507: '<td>'.$foil_correct_plot.'</td>'.
1508: '<td>'.$foil_incorrect_plot.'</td>'.
1509: '<td align="left" valign="top">'.$foilkey.'</td></tr>'.$/;
1510: $table .= '<tr><td colspan="4" align="center">'.
1.96 matthew 1511: &mt('Start time: [_1]',$startdateform).'<br />'.
1512: &mt('End time: [_1]',$enddateform).'</td></tr>'.$/;
1.88 matthew 1513: $table.= '<tr><td colspan="4"> </td></tr>'.$/;
1.33 matthew 1514: }
1.88 matthew 1515: $table .= '</table>';
1.42 matthew 1516: #
1.33 matthew 1517: return $table;
1518: }
1519:
1.57 matthew 1520: sub OR_Foil_Time_Analysis {
1.96 matthew 1521: my ($processed_time_data,$correct,$data_count,$student_count,
1522: $ORdata,$Foils,$Concepts) = @_;
1523: if ($data_count <= 0) {
1524: return ('<h2>'.&mt('There is no data to plot').'</h2>','');
1525: }
1.42 matthew 1526: my $analysis_html;
1.88 matthew 1527: my @plotdata;
1528: my @labels;
1529: foreach my $concept (@{$Concepts}) {
1530: foreach my $foil (@{$concept->{'foils'}}) {
1531: push(@labels,scalar(@labels)+1);
1.96 matthew 1532: my $total = $processed_time_data->{$foil}->{'_total'};
1.88 matthew 1533: if ($total == 0) {
1534: push(@{$plotdata[0]},0);
1.42 matthew 1535: } else {
1.88 matthew 1536: push(@{$plotdata[0]},
1.96 matthew 1537: 100 * $processed_time_data->{$foil}->{'_correct'} / $total);
1.37 matthew 1538: }
1.96 matthew 1539: my $total_incorrect = $total - $processed_time_data->{$foil}->{'_correct'};
1.88 matthew 1540: for (my $i=0;$i<scalar(@{$ORdata->{'_Options'}});$i++) {
1541: my $option = $ORdata->{'_Options'}->[$i];
1542: if ($total_incorrect == 0) {
1543: push(@{$plotdata[$i+1]},0);
1544: } else {
1545: push(@{$plotdata[$i+1]},
1.96 matthew 1546: 100 * $processed_time_data->{$foil}->{$option} / $total_incorrect);
1.88 matthew 1547: }
1548: }
1549: }
1550: # Put in a blank one
1551: push(@labels,'');
1552: push(@{$plotdata[0]},0);
1553: for (my $i=0;$i<scalar(@{$ORdata->{'_Options'}});$i++) {
1554: push(@{$plotdata[$i+1]},0);
1.39 matthew 1555: }
1.42 matthew 1556: }
1557: #
1558: # Create the plot
1.96 matthew 1559: my $correct_plot = &Apache::loncommon::DrawBarGraph('Correct Statements',
1560: 'Statement Number',
1561: 'Percent Correct',
1562: 100,
1563: $plotcolors,
1564: undef,
1.105 matthew 1565: $plotdata[0],
1566: {xskip=>1});
1.88 matthew 1567: for (my $j=0; $j< scalar(@{$plotdata[0]});$j++) {
1568: $plotdata[0]->[$j]=0;
1.42 matthew 1569: }
1.96 matthew 1570: my $incorrect_plot =
1571: &Apache::loncommon::DrawBarGraph('Incorrect Statements',
1572: 'Statement Number',
1573: 'Incorrect Option Choice',
1574: 100,
1575: $plotcolors,
1576: undef,
1.105 matthew 1577: @plotdata,{xskip=>1});
1.88 matthew 1578: return ($correct_plot,$incorrect_plot);
1.42 matthew 1579: }
1580:
1.57 matthew 1581: sub OR_Concept_Time_Analysis {
1.96 matthew 1582: my ($processed_time_data,$correct,$data_count,$student_count,
1583: $ORdata,$Concepts) = @_;
1584: return '' if ($data_count == 0);
1.33 matthew 1585: #
1.42 matthew 1586: # Put the data in plottable form
1.88 matthew 1587: my @plotdata;
1.42 matthew 1588: foreach my $concept (@$Concepts) {
1589: my ($total,$correct);
1590: foreach my $foil (@{$concept->{'foils'}}) {
1.96 matthew 1591: $total += $processed_time_data->{$foil}->{'_total'};
1592: $correct += $processed_time_data->{$foil}->{'_correct'};
1.42 matthew 1593: }
1594: if ($total == 0) {
1.88 matthew 1595: push(@plotdata,0);
1.42 matthew 1596: } else {
1.88 matthew 1597: push(@plotdata,100 * $correct / $total);
1.42 matthew 1598: }
1599: }
1600: #
1.33 matthew 1601: # Create the plot
1.96 matthew 1602: return &Apache::loncommon::DrawBarGraph('Correct Concepts',
1.88 matthew 1603: 'Concept Number',
1604: 'Percent Correct',
1605: 100,
1606: $plotcolors,
1607: undef,
1.105 matthew 1608: \@plotdata,{xskip=>1});
1.42 matthew 1609: }
1610:
1.96 matthew 1611: sub OR_time_process_data {
1612: my ($performance_data,$begin_index,$end_index)=@_;
1613: my %processed_time_data;
1614: my %distinct_students;
1615: my ($correct,$data_count);
1616: if (($begin_index == $end_index) &&
1617: ($end_index != scalar(@$performance_data)-1)) {
1618: return undef;
1619: }
1620: # Be sure we include the last one if we are asked for it.
1621: # That we have to correct here (and not when $end_index is
1622: # given a value) should probably be considered a bug.
1623: if ($end_index == scalar(@$performance_data)-1) {
1624: $end_index++;
1625: }
1626: my $count;
1627: for (my $i=$begin_index;$i<$end_index;$i++) {
1628: my $attempt = $performance_data->[$i];
1629: $count++;
1630: next if (! defined($attempt));
1631: my %attempt = &Process_OR_Row($attempt);
1632: $data_count++;
1633: $correct += $attempt{'_correct'};
1634: $distinct_students{$attempt->[&Apache::loncoursedata::RD_student_id()]}++;
1635: while (my ($foilid,$href) = each(%attempt)) {
1636: if (! ref($href)) {
1637: $processed_time_data{$foilid} += $href;
1638: next;
1639: }
1640: while (my ($option,$value) = each(%$href)) {
1641: $processed_time_data{$foilid}->{$option}+=$value;
1642: }
1643: }
1644: }
1645: return (\%processed_time_data,$correct,$data_count,
1646: scalar(keys(%distinct_students)));
1647: }
1648:
1.46 matthew 1649: sub build_foil_index {
1650: my ($ORdata) = @_;
1.48 matthew 1651: return if (! exists($ORdata->{'_Foils'}));
1652: my %Foildata = %{$ORdata->{'_Foils'}};
1.46 matthew 1653: my @Foils = sort(keys(%Foildata));
1654: my %Concepts;
1655: foreach my $foilid (@Foils) {
1.48 matthew 1656: push(@{$Concepts{$Foildata{$foilid}->{'_Concept'}}},
1.46 matthew 1657: $foilid);
1658: }
1659: undef(@Foils);
1660: # Having gathered the concept information in a hash, we now translate it
1661: # into an array because we need to be consistent about order.
1662: # Also put the foils in order, too.
1663: my $sortfunction = sub {
1664: my %Numbers = (one => 1,
1665: two => 2,
1666: three => 3,
1667: four => 4,
1668: five => 5,
1669: six => 6,
1670: seven => 7,
1671: eight => 8,
1672: nine => 9,
1673: ten => 10,);
1674: my $a1 = lc($a);
1675: my $b1 = lc($b);
1.57 matthew 1676: if (exists($Numbers{$a1})) {
1.67 matthew 1677: $a1 = $Numbers{$a1};
1.57 matthew 1678: }
1679: if (exists($Numbers{$b1})) {
1.67 matthew 1680: $b1 = $Numbers{$b1};
1.46 matthew 1681: }
1.67 matthew 1682: if (($a1 =~/^\d+$/) && ($b1 =~/^\d+$/)) {
1683: return $a1 <=> $b1;
1.57 matthew 1684: } else {
1.67 matthew 1685: return $a1 cmp $b1;
1.46 matthew 1686: }
1687: };
1688: my @Concepts;
1689: foreach my $concept (sort $sortfunction (keys(%Concepts))) {
1.57 matthew 1690: if (! defined($Concepts{$concept})) {
1691: $Concepts{$concept}=[];
1692: # next;
1693: }
1.46 matthew 1694: push(@Concepts,{ name => $concept,
1695: foils => [@{$Concepts{$concept}}]});
1696: push(@Foils,(@{$Concepts{$concept}}));
1697: }
1698: #
1699: # Build up the table of row labels.
1700: my $table = '<table border="1" >'."\n";
1701: if (@Concepts > 1) {
1702: $table .= '<tr>'.
1703: '<th>'.&mt('Concept Number').'</th>'.
1704: '<th>'.&mt('Concept').'</th>'.
1705: '<th>'.&mt('Foil Number').'</th>'.
1706: '<th>'.&mt('Foil Name').'</th>'.
1707: '<th>'.&mt('Foil Text').'</th>'.
1708: '<th>'.&mt('Correct Value').'</th>'.
1709: "</tr>\n";
1710: } else {
1711: $table .= '<tr>'.
1712: '<th>'.&mt('Foil Number').'</th>'.
1713: '<th>'.&mt('Foil Name').'</th>'.
1714: '<th>'.&mt('Foil Text').'</th>'.
1715: '<th>'.&mt('Correct Value').'</th>'.
1716: "</tr>\n";
1717: }
1718: my $conceptindex = 1;
1719: my $foilindex = 1;
1720: foreach my $concept (@Concepts) {
1721: my @FoilsInConcept = @{$concept->{'foils'}};
1722: my $firstfoil = shift(@FoilsInConcept);
1723: if (@Concepts > 1) {
1724: $table .= '<tr>'.
1725: '<td>'.$conceptindex.'</td>'.
1.83 albertel 1726: '<td>'.&HTML::Entities::encode($concept->{'name'},'<>&"').'</td>'.
1.46 matthew 1727: '<td>'.$foilindex++.'</td>'.
1.83 albertel 1728: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'name'},'<>&"').'</td>'.
1.65 matthew 1729: '<td>'.$Foildata{$firstfoil}->{'text'}.'</td>'.
1.83 albertel 1730: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'value'},'<>&"').'</td>'.
1.46 matthew 1731: "</tr>\n";
1732: } else {
1733: $table .= '<tr>'.
1734: '<td>'.$foilindex++.'</td>'.
1.83 albertel 1735: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'name'},'<>&"').'</td>'.
1.65 matthew 1736: '<td>'.$Foildata{$firstfoil}->{'text'}.'</td>'.
1.83 albertel 1737: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'value'},'<>&"').'</td>'.
1.46 matthew 1738: "</tr>\n";
1739: }
1740: foreach my $foilid (@FoilsInConcept) {
1741: if (@Concepts > 1) {
1742: $table .= '<tr>'.
1743: '<td></td>'.
1744: '<td></td>'.
1745: '<td>'.$foilindex.'</td>'.
1.83 albertel 1746: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'name'},'<>&"').'</td>'.
1.65 matthew 1747: '<td>'.$Foildata{$foilid}->{'text'}.'</td>'.
1.84 albertel 1748: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'value'},'<>&"').'</td>'.
1.46 matthew 1749: "</tr>\n";
1750: } else {
1751: $table .= '<tr>'.
1752: '<td>'.$foilindex.'</td>'.
1.83 albertel 1753: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'name'},'<>&"').'</td>'.
1.65 matthew 1754: '<td>'.$Foildata{$foilid}->{'text'}.'</td>'.
1.83 albertel 1755: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'value'},'<>&"').'</td>'.
1.46 matthew 1756: "</tr>\n";
1757: }
1758: } continue {
1759: $foilindex++;
1760: }
1761: } continue {
1762: $conceptindex++;
1763: }
1764: $table .= "</table>\n";
1765: #
1766: # Build option index with color stuff
1767: return ($table,\@Foils,\@Concepts);
1768: }
1769:
1770: sub build_option_index {
1771: my ($ORdata)= @_;
1772: my $table = "<table>\n";
1773: my $optionindex = 0;
1774: my @Rows;
1.48 matthew 1775: foreach my $option (&mt('correct option chosen'),@{$ORdata->{'_Options'}}) {
1.95 matthew 1776: my $color = $plotcolors->[$optionindex++];
1.46 matthew 1777: push (@Rows,
1778: '<tr>'.
1.95 matthew 1779: '<td bgcolor="'.$color.'">'.
1780: '<font color="'.$color.'">'.('*'x3).'</font>'.'</td>'.
1.83 albertel 1781: '<td>'.&HTML::Entities::encode($option,'<>&"').'</td>'.
1.46 matthew 1782: "</tr>\n");
1783: }
1784: shift(@Rows); # Throw away 'correct option chosen' color
1785: $table .= join('',reverse(@Rows));
1786: $table .= "</table>\n";
1787: }
1788:
1.94 matthew 1789: sub build_foil_key {
1790: my ($foils,$extra_data)= @_;
1791: if (! defined($extra_data)) { $extra_data = {}; }
1792: my $table = "<table>\n";
1793: my $foil_index = 0;
1794: my @rows;
1795: foreach my $foil (&mt('correct foil chosen'),@{$foils}) {
1.95 matthew 1796: my $color = $plotcolors->[$foil_index++];
1.94 matthew 1797: push (@rows,
1798: '<tr>'.
1.95 matthew 1799: '<td bgcolor="'.$color.'" class="key">'.
1800: '<font color="'.$color.'">'.('*'x4).'</font></td>'.
1.94 matthew 1801: '<td>'.&HTML::Entities::encode($foil,'<>&"').
1802: (' 'x2).$extra_data->{$foil}.'</td>'.
1803: "</tr>\n");
1804: }
1805: shift(@rows); # Throw away 'correct foil chosen' color
1806: $table .= join('',reverse(@rows));
1807: $table .= "</table>\n";
1808: }
1809:
1.33 matthew 1810: #########################################################
1811: #########################################################
1812: ##
1.46 matthew 1813: ## Generic Interface Routines
1.33 matthew 1814: ##
1815: #########################################################
1816: #########################################################
1.23 matthew 1817: sub CreateInterface {
1.28 matthew 1818: ##
1819: ## Environment variable initialization
1.120 albertel 1820: if (! exists($env{'form.AnalyzeOver'})) {
1821: $env{'form.AnalyzeOver'} = 'tries';
1.28 matthew 1822: }
1823: ##
1824: ## Build the menu
1.7 stredwic 1825: my $Str = '';
1.72 matthew 1826: $Str .= &Apache::lonhtmlcommon::breadcrumbs
1.74 matthew 1827: (undef,'Detailed Problem Analysis');
1.23 matthew 1828: $Str .= '<table cellspacing="5">'."\n";
1829: $Str .= '<tr>';
1830: $Str .= '<td align="center"><b>'.&mt('Sections').'</b></td>';
1831: $Str .= '<td align="center"><b>'.&mt('Enrollment Status').'</b></td>';
1.31 matthew 1832: $Str .= '<td align="center"> </td>';
1.23 matthew 1833: $Str .= '</tr>'."\n";
1.31 matthew 1834: ##
1835: ##
1.23 matthew 1836: $Str .= '<tr><td align="center">'."\n";
1837: $Str .= &Apache::lonstatistics::SectionSelect('Section','multiple',5);
1.28 matthew 1838: $Str .= '</td>';
1839: #
1840: $Str .= '<td align="center">';
1.23 matthew 1841: $Str .= &Apache::lonhtmlcommon::StatusOptions(undef,undef,5);
1.28 matthew 1842: $Str .= '</td>';
1843: #
1.36 matthew 1844: ##
1845: ##
1.28 matthew 1846: $Str .= '<td>';
1.91 matthew 1847: ##
1848: my $showprob_checkbox =
1849: '<input type="checkbox" name="show_prob" value="true" ';
1.120 albertel 1850: if ($env{'form.show_prob'} eq 'true') {
1.91 matthew 1851: $showprob_checkbox .= 'checked ';
1852: }
1853: $showprob_checkbox.= ' />';
1854: $Str.= '<nobr><label>'.
1855: &mt('Show problem [_1]',$showprob_checkbox).
1856: '</label></nobr><br />';
1857: ##
1.90 matthew 1858: my $analyze_selector = '<select name="AnalyzeOver" >';
1.94 matthew 1859: $analyze_selector .= '<option value="tries" ';
1.120 albertel 1860: if (! exists($env{'form.AnalyzeOver'}) ||
1861: $env{'form.AnalyzeOver'} eq 'tries'){
1.94 matthew 1862: # Default to tries
1.90 matthew 1863: $analyze_selector .= ' selected ';
1864: }
1865: $analyze_selector .= '>'.&mt('Tries').'</option>';
1.94 matthew 1866: $analyze_selector .= '<option value="time" ';
1.120 albertel 1867: $analyze_selector .= ' selected ' if ($env{'form.AnalyzeOver'} eq 'time');
1.90 matthew 1868: $analyze_selector .= '>'.&mt('Time').'</option>';
1869: $analyze_selector .= '</select>';
1.91 matthew 1870: $Str .= '<nobr><label>'.
1.90 matthew 1871: &mt('Analyze Over [_1] [_2]',
1872: $analyze_selector,
1873: &Apache::loncommon::help_open_topic('Analysis_Analyze_Over')).
1.91 matthew 1874: '</label></nobr><br />'.$/;
1.90 matthew 1875: ##
1876: my $numplots_selector = '<select name="NumPlots">';
1.120 albertel 1877: if (! exists($env{'form.NumPlots'})
1878: || $env{'form.NumPlots'} < 1
1879: || $env{'form.NumPlots'} > 20) {
1880: $env{'form.NumPlots'} = 5;
1.90 matthew 1881: }
1882: foreach my $i (1,2,3,4,5,6,7,8,10,15,20) {
1883: $numplots_selector .= '<option value="'.$i.'" ';
1.120 albertel 1884: if ($env{'form.NumPlots'} == $i) { $numplots_selector.=' selected '; }
1.90 matthew 1885: $numplots_selector .= '>'.$i.'</option>';
1886: }
1887: $numplots_selector .= '</select></nobr><br />';
1888: $Str .= '<nobr><label>'.&mt('Number of Plots [_1]',$numplots_selector).
1889: '</label></nobr>';
1890: ##
1891: $Str .= '<nobr><label>'.&mt('Status: [_1]',
1.85 matthew 1892: '<input type="text" '.
1893: 'name="stats_status" size="60" value="" />'
1894: ).
1.90 matthew 1895: '</label></nobr>';
1.28 matthew 1896: $Str .= '</td>';
1.36 matthew 1897: ##
1898: ##
1.28 matthew 1899: $Str .= '</tr>'."\n";
1.23 matthew 1900: $Str .= '</table>'."\n";
1.42 matthew 1901: return $Str;
1.54 matthew 1902: }
1.47 matthew 1903:
1904: #########################################################
1905: #########################################################
1906: ##
1907: ## Misc Option Response functions
1908: ##
1909: #########################################################
1910: #########################################################
1911: sub get_time_from_row {
1.42 matthew 1912: my ($row) = @_;
1913: if (ref($row)) {
1.47 matthew 1914: return $row->[&Apache::loncoursedata::RD_timestamp()];
1.42 matthew 1915: }
1916: return undef;
1917: }
1918:
1.47 matthew 1919: sub get_tries_from_row {
1.42 matthew 1920: my ($row) = @_;
1921: if (ref($row)) {
1.47 matthew 1922: return $row->[&Apache::loncoursedata::RD_tries()];
1.42 matthew 1923: }
1924: return undef;
1925: }
1926:
1.48 matthew 1927: sub hashify_attempt {
1928: my ($row) = @_;
1929: my %attempt;
1.94 matthew 1930: $attempt{'student'} = $row->[&Apache::loncoursedata::RD_sname()];
1.48 matthew 1931: $attempt{'tries'} = $row->[&Apache::loncoursedata::RD_tries()];
1.94 matthew 1932: $attempt{'submission'} = &Apache::lonnet::unescape($row->[&Apache::loncoursedata::RD_submission()]);
1.48 matthew 1933: $attempt{'award'} = $row->[&Apache::loncoursedata::RD_awarddetail()];
1934: $attempt{'timestamp'} = $row->[&Apache::loncoursedata::RD_timestamp()];
1935: return %attempt;
1936: }
1937:
1.46 matthew 1938: sub Process_OR_Row {
1.42 matthew 1939: my ($row) = @_;
1940: my %RowData;
1.96 matthew 1941: # my $student_id = $row->[&Apache::loncoursedata::RD_student_id()];
1.47 matthew 1942: my $award = $row->[&Apache::loncoursedata::RD_awarddetail()];
1943: my $grading = $row->[&Apache::loncoursedata::RD_response_eval()];
1944: my $submission = $row->[&Apache::loncoursedata::RD_submission()];
1945: my $time = $row->[&Apache::loncoursedata::RD_timestamp()];
1.96 matthew 1946: # my $tries = $row->[&Apache::loncoursedata::RD_tries()];
1.43 matthew 1947: return undef if ($award eq 'MISSING_ANSWER');
1.97 matthew 1948: if (&submission_is_correct($award)) {
1.42 matthew 1949: $RowData{'_correct'} = 1;
1950: }
1951: $RowData{'_total'} = 1;
1952: my @Foilgrades = split('&',$grading);
1953: my @Foilsubs = split('&',$submission);
1954: for (my $j=0;$j<=$#Foilgrades;$j++) {
1955: my ($foilid,$correct) = split('=',$Foilgrades[$j]);
1.58 matthew 1956: $foilid = &Apache::lonnet::unescape($foilid);
1.42 matthew 1957: my (undef,$submission) = split('=',$Foilsubs[$j]);
1958: if ($correct) {
1959: $RowData{$foilid}->{'_correct'}++;
1960: } else {
1961: $submission = &Apache::lonnet::unescape($submission);
1962: $RowData{$foilid}->{$submission}++;
1963: }
1964: $RowData{$foilid}->{'_total'}++;
1965: }
1966: return %RowData;
1.47 matthew 1967: }
1968:
1.97 matthew 1969: sub submission_is_correct {
1970: my ($award) = @_;
1971: if ($award =~ /(APPROX_ANS|EXACT_ANS)/) {
1972: return 1;
1973: } else {
1974: return 0;
1975: }
1976: }
1977:
1.23 matthew 1978: 1;
1.1 stredwic 1979:
1980: __END__
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