1: # The LearningOnline Network with CAPA
2: #
3: # $Id: lonproblemanalysis.pm,v 1.103 2004/11/10 16:56:39 matthew Exp $
4: #
5: # Copyright Michigan State University Board of Trustees
6: #
7: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
8: #
9: # LON-CAPA is free software; you can redistribute it and/or modify
10: # it under the terms of the GNU General Public License as published by
11: # the Free Software Foundation; either version 2 of the License, or
12: # (at your option) any later version.
13: #
14: # LON-CAPA is distributed in the hope that it will be useful,
15: # but WITHOUT ANY WARRANTY; without even the implied warranty of
16: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17: # GNU General Public License for more details.
18: #
19: # You should have received a copy of the GNU General Public License
20: # along with LON-CAPA; if not, write to the Free Software
21: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22: #
23: # /home/httpd/html/adm/gpl.txt
24: #
25: # http://www.lon-capa.org/
26: #
27: package Apache::lonproblemanalysis;
28:
29: use strict;
30: use Apache::lonnet();
31: use Apache::loncommon();
32: use Apache::lonhtmlcommon();
33: use Apache::loncoursedata();
34: use Apache::lonstatistics;
35: use Apache::lonlocal;
36: use Apache::lonstathelpers();
37: use Apache::lonstudentsubmissions();
38: use HTML::Entities();
39: use Time::Local();
40: use Spreadsheet::WriteExcel();
41:
42: my $plotcolors = ['#33ff00',
43: '#0033cc', '#990000', '#aaaa66', '#663399', '#ff9933',
44: '#66ccff', '#ff9999', '#cccc33', '#660000', '#33cc66',
45: ];
46:
47: my @SubmitButtons = ({ name => 'PrevProblemAnalysis',
48: text => 'Previous Problem' },
49: { name => 'ProblemAnalysis',
50: text => 'Analyze Problem Again' },
51: { name => 'NextProblemAnalysis',
52: text => 'Next Problem' },
53: { name => 'break'},
54: { name => 'SelectAnother',
55: text => 'Choose a different Problem' },
56: { name => 'ExcelOutput',
57: text => 'Produce Excel Output' });
58:
59: sub BuildProblemAnalysisPage {
60: my ($r,$c)=@_;
61: #
62: my %Saveable_Parameters = ('Status' => 'scalar',
63: 'Section' => 'array',
64: 'NumPlots' => 'scalar',
65: 'AnalyzeOver' => 'scalar',
66: );
67: &Apache::loncommon::store_course_settings('problem_analysis',
68: \%Saveable_Parameters);
69: &Apache::loncommon::restore_course_settings('problem_analysis',
70: \%Saveable_Parameters);
71: #
72: &Apache::lonstatistics::PrepareClasslist();
73: #
74: $r->print(&CreateInterface());
75: #
76: my @Students = @Apache::lonstatistics::Students;
77: #
78: if (@Students < 1 && exists($ENV{'form.firstrun'})) {
79: $r->print('<h2>There are no students in the sections selected</h2>');
80: }
81: #
82: my @CacheButtonHTML =
83: &Apache::lonstathelpers::manage_caches($r,'Statistics','stats_status');
84: $r->rflush();
85: #
86: # Support for numerical and radio response isn't complete enough to
87: # include in 1.2 release.
88: # my $problem_types = '(option|radiobutton|numerical)';
89: my $problem_types = '.';#(option)';
90: if (exists($ENV{'form.problemchoice'}) &&
91: ! exists($ENV{'form.SelectAnother'})) {
92: foreach my $button (@SubmitButtons) {
93: if ($button->{'name'} eq 'break') {
94: $r->print("<br />\n");
95: } else {
96: $r->print('<input type="submit" name="'.$button->{'name'}.'" '.
97: 'value="'.&mt($button->{'text'}).'" />');
98: $r->print(' 'x5);
99: }
100: }
101: foreach my $html (@CacheButtonHTML) {
102: $r->print($html.(' 'x5));
103: }
104: #
105: $r->print('<hr />');
106: $r->rflush();
107: #
108: # Determine which problem we are to analyze
109: my $current_problem = &Apache::lonstathelpers::get_target_from_id
110: ($ENV{'form.problemchoice'});
111: #
112: my ($prev,$curr,$next) =
113: &Apache::lonstathelpers::get_prev_curr_next($current_problem,
114: $problem_types,
115: 'response',
116: );
117: if (exists($ENV{'form.PrevProblemAnalysis'}) && defined($prev)) {
118: $current_problem = $prev;
119: } elsif (exists($ENV{'form.NextProblemAnalysis'}) && defined($next)) {
120: $current_problem = $next;
121: } else {
122: $current_problem = $curr;
123: }
124: #
125: # Store the current problem choice and send it out in the form
126: $ENV{'form.problemchoice'} =
127: &Apache::lonstathelpers::make_target_id($current_problem);
128: $r->print('<input type="hidden" name="problemchoice" value="'.
129: $ENV{'form.problemchoice'}.'" />');
130: #
131: if (! defined($current_problem->{'resource'})) {
132: $r->print('resource is undefined');
133: } else {
134: my $resource = $current_problem->{'resource'};
135: $r->print('<h1>'.$resource->{'title'}.'</h1>');
136: $r->print('<h3>'.$resource->{'src'}.'</h3>');
137: if ($ENV{'form.show_prob'} eq 'true') {
138: $r->print(&Apache::lonstathelpers::render_resource($resource));
139: }
140: $r->rflush();
141: my %Data = &Apache::lonstathelpers::get_problem_data
142: ($resource->{'src'});
143: my $problem_data = $Data{$current_problem->{'part'}.
144: '.'.
145: $current_problem->{'respid'}};
146: if ($current_problem->{'resptype'} eq 'option') {
147: &OptionResponseAnalysis($r,$current_problem,
148: $problem_data,
149: \@Students);
150: } elsif ($current_problem->{'resptype'} eq 'radiobutton') {
151: &radio_response_analysis($r,$current_problem,
152: $problem_data,
153: \@Students);
154: } elsif ($current_problem->{'resptype'} eq 'numerical') {
155: &numerical_response_analysis($r,$current_problem,
156: $problem_data,\@Students);
157: } else {
158: $r->print('<h2>Analysis of '.$current_problem->{'resptype'}.' is not supported</h2>');
159: }
160: }
161: $r->print('<hr />');
162: } else {
163: $r->print('<input type="submit" name="ProblemAnalysis" value="'.
164: &mt('Analyze Problem').'" />');
165: $r->print(' 'x5);
166: $r->print('<h3>'.&mt('Please select a problem to analyze').'</h3>');
167: $r->print(&Apache::lonstathelpers::ProblemSelector
168: ($problem_types));
169: }
170: }
171:
172: #########################################################
173: #########################################################
174: ##
175: ## Numerical Response Routines
176: ##
177: #########################################################
178: #########################################################
179: sub numerical_response_analysis {
180: my ($r,$problem,$problem_analysis,$students) = @_;
181: my $c = $r->connection();
182: #
183: if ($ENV{'form.AnalyzeOver'} !~ /^(tries|time)$/) {
184: $r->print('Bad request');
185: }
186: #
187: my ($resource,$partid,$respid) = ($problem->{'resource'},
188: $problem->{'part'},
189: $problem->{'respid'});
190: # Gather student data
191: my $response_data = &Apache::loncoursedata::get_response_data
192: (\@Apache::lonstatistics::SelectedSections,
193: $Apache::lonstatistics::enrollment_status,
194: $resource->{'symb'},$respid);
195: #
196: for (my $plot_num = 1;$plot_num<=$ENV{'form.NumPlots'};$plot_num++) {
197: my $restriction_function;
198: $restriction_function = sub {($_[0]->{'tries'} == $plot_num?1:0)};
199: #
200: my ($correct,$intervals,$answers) =
201: &numerical_response_determine_intervals($r,$resource,$partid,
202: $respid,$students);
203: if ($c->aborted()) { return; };
204: #
205: my $responses = &classify_response_data($response_data,
206: $correct,
207: $restriction_function);
208: my $student_count = $responses->{'_students'};
209: my $correct_count = $responses->{'_correct'};
210: my $total_count = $responses->{'_count'};
211: my $max = $responses->{'_max'};
212: #
213: my $analysis_html = '<h2>'.&mt('Attempt [_1]',$plot_num).'</h2>';
214: $analysis_html.= &numerical_one_dimensional_plot($r,600,150,
215: scalar(@$students),
216: $answers);
217: $analysis_html.= '<table><tr>'.
218: '<td valign="top" align="center">'.
219: &numerical_plot_percent($r,$responses).'</td>'.
220: '<td align="center" valign="top">'.
221: &numerical_plot_differences($r,$responses).'</td>'.
222: '</tr>'.$/.'</table>';
223: $r->print($analysis_html);
224: }
225: #
226: return;
227: }
228:
229: sub numerical_plot_percent {
230: my ($r,$responses) = @_;
231: #
232: my $total = $responses->{'_count'};
233: return '' if ($total == 0);
234: my $minbin = 0.5;
235: while (my ($interval,$submissions) = each(%$responses)) {
236: next if ($interval =~ /^_/);
237: my ($ans,$ans_low,$ans_high) = split(" ",$interval);
238: my $low_percent = abs(($ans-$ans_low)/$ans);
239: my $high_percent = abs(($ans_high-$ans)/$ans);
240: if ($minbin > $high_percent) { $minbin = $high_percent; }
241: if ($minbin > $low_percent) { $minbin = $low_percent; }
242: }
243: #
244: my @bins;
245: if ($minbin < 1) {
246: @bins = (0.1, ".5",1,1.5,2,2.5,3,4,5,10,20,50,100);
247: } elsif ($minbin < 2) {
248: @bins = (0.5,1,1.5,2,2.5,3,4,5,10,20,50,100);
249: } elsif ($minbin < 5) {
250: @bins = (1,2,3,4,5,10,25,50,75,100,200);
251: } elsif ($minbin < 10) {
252: @bins = (2,4,6,8,10,12,15,20,25,30,50,75,100,200);
253: } else {
254: @bins = (5,10,15,20,25,30,50,75,100,200);
255: }
256: my @labels = (1..scalar(@bins));
257: #
258: my @correct;
259: my @incorrect;
260: while (my ($interval,$submissions) = each(%$responses)) {
261: next if ($interval =~ /^_/);
262: my ($ans,$ans_low,$ans_high) = split(" ",$interval);
263: while (my ($submission,$count) = each(%$submissions)) {
264: my $scaled_value = abs(($submission-$ans)/$ans);
265: my $bin=0;
266: for ($bin=0;$bin<$#bins;$bin++) { # not <= for a reason
267: last if ($bins[$bin]>$scaled_value);
268: }
269: if (($submission <= $ans_high) && ($submission >= $ans_low)) {
270: $correct[$bin]+=$count;
271: } else {
272: $incorrect[$bin]+=$count;
273: }
274: }
275: }
276: #
277: for (my $i=0;$i<=$#bins;$i++) {
278: if (! defined( $correct[$i])) { $correct[$i]=0;}
279: if (! defined($incorrect[$i])) { $incorrect[$i]=0;}
280: $correct[$i]*=100/$total;
281: $incorrect[$i]*=100/$total;
282: }
283: my $title = &mt('Distribution by Percent');
284: my $graph = &Apache::loncommon::DrawBarGraph
285: ($title,'Percent difference from correct','Number of answers',
286: 100,['#33FF00','#FF3300'],\@labels,\@correct,\@incorrect,
287: {xskip=>1});
288: #
289: my $table = $graph.'<table><tr><th>'.&mt('Bar').'</th>'.
290: '<th colspan="3">'.&mt('Range').'</th>';
291: for (my $i=0;$i<=$#bins;$i++) {
292: my $lownum;
293: if ($i == 0) {
294: $lownum = 0;
295: } else {
296: $lownum = $bins[$i-1];
297: }
298: my $highnum = $bins[$i];
299: $table .=
300: '<tr>'.
301: '<td>'.$labels[$i].'</td>'.
302: '<td align="right">'.$lownum.'</td>'.
303: '<td> - </td>'.
304: '<td align="right">'.$highnum.'</td>'.'</tr>'.$/;
305: }
306: $table.= '</table>'.$/;
307: return $table;
308: }
309:
310: sub numerical_plot_differences {
311: my ($r,$responses) = @_;
312: #
313: my $total = $responses->{'_count'};
314: return '' if ($total == 0);
315: my $minbin = undef;
316: my $maxbin = undef;
317: while (my ($interval,$submissions) = each(%$responses)) {
318: next if ($interval =~ /^_/);
319: my ($ans,$ans_low,$ans_high) = split(" ",$interval);
320: my $low_diff = abs($ans-$ans_low);
321: my $high_diff = abs($ans_high-$ans);
322: if (! defined($maxbin)) { $maxbin = $low_diff;}
323: if (! defined($minbin)) { $minbin = $low_diff;}
324: #
325: if ($minbin > $high_diff) { $minbin = $high_diff; }
326: if ($minbin > $low_diff ) { $minbin = $low_diff; }
327: #
328: if ($maxbin < $high_diff) { $maxbin = $high_diff; }
329: if ($maxbin < $low_diff ) { $maxbin = $low_diff; }
330: }
331: #
332: my @bins;
333: my @labels;
334: # Hmmmm, should switch to absolute difference
335: for (my $i=1;$i<=20;$i++) {
336: push(@bins,$i*$minbin/2);
337: push(@labels,$i);
338: }
339: #
340: my @correct;
341: my @incorrect;
342: while (my ($interval,$submissions) = each(%$responses)) {
343: next if ($interval =~ /^_/);
344: my ($ans,$ans_low,$ans_high) = split(" ",$interval);
345: while (my ($submission,$count) = each(%$submissions)) {
346: my $value = abs($submission-$ans);
347: my $bin=0;
348: for ($bin=0;$bin<$#bins;$bin++) { # not <= for a reason
349: last if ($bins[$bin]>$value);
350: }
351: if (($submission <= $ans_high) && ($submission >= $ans_low)) {
352: $correct[$bin]+=$count;
353: } else {
354: $incorrect[$bin]+=$count;
355: }
356: }
357: }
358: #
359: for (my $i=0;$i<=$#bins;$i++) {
360: if (! defined( $correct[$i])) { $correct[$i]=0;}
361: if (! defined($incorrect[$i])) { $incorrect[$i]=0;}
362: $correct[$i]*=100/$total;
363: $incorrect[$i]*=100/$total;
364: }
365: my $title = &mt('Distribution by Magnitude');
366: my $graph = &Apache::loncommon::DrawBarGraph
367: ($title,'magnitude difference from correct','Number of answers',
368: 100,['#33FF00','#FF3300'],\@labels,\@correct,\@incorrect,{xskip=>1});
369: #
370: my $table = $graph.'<table><tr><th>'.&mt('Bar').'</th>'.
371: '<th colspan="3">'.&mt('Range').'</th>';
372: for (my $i=0;$i<=$#bins;$i++) {
373: my $lownum;
374: if ($i == 0) {
375: $lownum = 0;
376: } else {
377: $lownum = $bins[$i-1];
378: }
379: my $highnum = $bins[$i];
380: $table .=
381: '<tr>'.
382: '<td>'.$labels[$i].'</td>'.
383: '<td align="right">'.$lownum.'</td>'.
384: '<td> - </td>'.
385: '<td align="right">'.$highnum.'</td>'.'</tr>'.$/;
386: }
387: $table.= '</table>'.$/;
388: return $table;
389: }
390:
391: sub numerical_response_determine_intervals {
392: my ($r,$resource,$partid,$respid,$students)=@_;
393: my $c = $r->connection();
394: #
395: # FIX ME: Need progress dialog updates
396: #
397: # Read in the cache (if it exists) before we start timing things.
398: &Apache::lonstathelpers::ensure_proper_cache($resource->{'symb'});
399: #
400: my $correct;
401: # %intervals differs from %answers because it may be possible for two
402: # students to have the same correct answer but different intervals.
403: my %intervals;
404: my %answers;
405: foreach my $student (@$students) {
406: last if ($c->aborted());
407: my $sname = $student->{'username'};
408: my $sdom = $student->{'domain'};
409: # analyze problem
410: my $analysis =
411: &Apache::lonstathelpers::analyze_problem_as_student($resource,
412: $sname,
413: $sdom);
414: # make the key
415: my $key = $partid.'.'.$respid;
416: my $interval = join(' ',($analysis->{$key.'.answer'}->[0],
417: $analysis->{$key.'.ans_low'}->[0],
418: $analysis->{$key.'.ans_high'}->[0]));
419: $correct->{$sname.':'.$sdom} = $interval;
420: $intervals{$interval}++;
421: $answers{$analysis->{$key.'.answer'}->[0]}++;
422: }
423: &Apache::lonstathelpers::write_analysis_cache();
424: return ($correct,\%intervals,\%answers);
425: }
426:
427: sub numerical_one_dimensional_plot {
428: my ($r,$width,$height,$n,$data)=@_;
429: #
430: # Compute data -> image scaling factors
431: my $max_y = 0;
432: my $min_x = undef;
433: my $max_x = undef;
434: while (my ($answer,$count) = each(%$data)) {
435: $max_y = $count if ($max_y < $count);
436: if (! defined($min_x) || $answer < $min_x) {
437: $min_x = $answer;
438: }
439: if (! defined($max_x) || $answer > $max_x) {
440: $max_x = $answer;
441: }
442: }
443: #
444: my $h_scale = ($width-10)/($max_x-$min_x);
445: #
446: my $ticscale = 5;
447: if ($max_y * $ticscale > $height/2) {
448: $ticscale = int($height/2/$max_y);
449: $ticscale = 1 if ($ticscale < 1);
450: }
451: #
452: # Create the plot
453: my $plot =
454: qq{<drawimage width="$width" height="$height" bgcolor="transparent" >};
455: while (my ($answer,$count) = each(%$data)) {
456: my $xloc = 5+$h_scale*($answer - $min_x);
457: my $top = $height/2-$count*$ticscale;
458: my $bottom = $height/2+$count*$ticscale;
459: $plot .= &line($xloc,$top,$xloc,$bottom,'888888',1);
460: }
461: #
462: # Put the scale on last to ensure it is on top of the data.
463: if ($min_x < 0 && $max_x > 0) {
464: my $circle_x = 5+$h_scale*abs($min_x); # '0' in data coordinates
465: my $r = 4;
466: $plot .= &line(5,$height/2,$circle_x-$r,$height/2,'000000',1);
467: $plot .= &circle($circle_x,$height/2,$r+1,'000000');
468: $plot .= &line($circle_x+$r,$height/2,$width-5,$height/2,'000000',1);
469: } else {
470: $plot .= &line(5,$height/2,$width-5,$height/2,'000000',1);
471: }
472: $plot .= '</drawimage>';
473: my $plotresult = &Apache::lonxml::xmlparse($r,'web',$plot);
474:
475: my $result = '<table>'.
476: '<tr><td colspan="3" align="center">'.
477: '<font size="+2">'.&mt('Distribution of correct answers').'</font>'.
478: '<br />'.&mt('[_1] students, [_2] distinct correct answers',
479: $n,scalar(keys(%$data))).
480: '<br />'.&mt('Maximum number of coinciding values: [_1]',$max_y).
481: '</td></tr>'.
482: '<tr>'.
483: '<td valign="center">'.$min_x.'</td>'.
484: '<td>'.$plotresult.'</td>'.
485: '<td valign="center">'.$max_x.'</td>'.
486: '</tr>'.
487: '</table>';
488: return $result;
489: }
490:
491: ##
492: ## Helper subroutines for <drawimage>.
493: ## These should probably go somewhere more suitable soon.
494: sub line {
495: my ($x1,$y1,$x2,$y2,$color,$thickness) = @_;
496: return qq{<line x1="$x1" y1="$y1" x2="$x2" y2="$y2" color="$color" thickness="$thickness" />};
497: }
498:
499: sub text {
500: my ($x,$y,$color,$text,$font,$direction) = @_;
501: if (! defined($font) || $font !~ /^(tiny|small|medium|large|giant)$/) {
502: $font = 'medium';
503: }
504: if (! defined($direction) || $direction ne 'vertical') {
505: $direction = '';
506: }
507: return qq{<text x="$x" y="$y" color="$color" font="$font" direction="$direction" >$text</text>};
508: }
509:
510: sub rectangle {
511: my ($x1,$y1,$x2,$y2,$color,$thickness,$filled) = @_;
512: return qq{<rectangle x1="$x1" y1="$y1" x2="$x2" y2="$y2" color="$color" thickness="$thickness" filled="$filled" />};
513: }
514:
515: sub arc {
516: my ($x,$y,$width,$height,$start,$end,$color,$thickness,$filled)=@_;
517: return qq{<arc x="$x" y="$y" width="$width" height="$height" start="$start" end="$end" color="$color" thickness="$thickness" filled="$filled" />};
518: }
519:
520: sub circle {
521: my ($x,$y,$radius,$color,$thickness,$filled)=@_;
522: return &arc($x,$y,$radius,$radius,0,360,$color,$thickness,$filled);
523: }
524:
525: sub build_student_data_worksheet {
526: my ($workbook,$format) = @_;
527: my $rows_output = 3;
528: my $cols_output = 0;
529: my $worksheet = $workbook->addworksheet('Student Data');
530: $worksheet->write($rows_output++,0,'Student Data',$format->{'h3'});
531: my @Headers = ('full name','username','domain','section',
532: "student\nnumber",'identifier');
533: $worksheet->write_row($rows_output++,0,\@Headers,$format->{'header'});
534: my @Students = @Apache::lonstatistics::Students;
535: my $studentrows = &Apache::loncoursedata::get_student_data(\@Students);
536: my %ids;
537: foreach my $row (@$studentrows) {
538: my ($mysqlid,$student) = @$row;
539: $ids{$student}=$mysqlid;
540: }
541: foreach my $student (@Students) {
542: my $name_domain = $student->{'username'}.':'.$student->{'domain'};
543: $worksheet->write_row($rows_output++,0,
544: [$student->{'fullname'},
545: $student->{'username'},$student->{'domain'},
546: $student->{'section'},$student->{'id'},
547: $ids{$name_domain}]);
548: }
549: return $worksheet;
550: }
551:
552: #########################################################
553: #########################################################
554: ##
555: ## Radio Response Routines
556: ##
557: #########################################################
558: #########################################################
559: sub radio_response_analysis {
560: my ($r,$problem,$problem_analysis,$students) = @_;
561: #
562: if ($ENV{'form.AnalyzeOver'} !~ /^(tries|time)$/) {
563: $r->print('Bad request');
564: }
565: #
566: my ($resource,$partid,$respid) = ($problem->{'resource'},
567: $problem->{'part'},
568: $problem->{'respid'});
569: #
570: my $analysis_html;
571: my $foildata = $problem_analysis->{'_Foils'};
572: my ($table,$foils,$concepts) = &build_foil_index($problem_analysis);
573: #
574: my %true_foils;
575: my $num_true = 0;
576: if (! $problem_analysis->{'answercomputed'}) {
577: foreach my $foil (@$foils) {
578: if ($foildata->{$foil}->{'value'} eq 'true') {
579: $true_foils{$foil}++;
580: }
581: }
582: $num_true = scalar(keys(%true_foils));
583: }
584: #
585: $analysis_html .= $table;
586: # Gather student data
587: my $response_data = &Apache::loncoursedata::get_response_data
588: (\@Apache::lonstatistics::SelectedSections,
589: $Apache::lonstatistics::enrollment_status,
590: $resource->{'symb'},$respid);
591: my $correct; # either a hash reference or a scalar
592: if ($problem_analysis->{'answercomputed'} || scalar(@$concepts) > 1) {
593: # This takes a while for large classes...
594: &Apache::lonstathelpers::GetStudentAnswers($r,$problem,$students,
595: 'Statistics',
596: 'stats_status');
597: foreach my $student (@$students) {
598: my ($idx,@remainder) = split('&',$student->{'answer'});
599: my ($answer) = ($remainder[$idx]=~/^(.*)=([^=]*)$/);
600: $correct->{$student->{'username'}.':'.$student->{'domain'}}=
601: &Apache::lonnet::unescape($answer);
602: }
603: } else {
604: foreach my $foil (keys(%$foildata)) {
605: if ($foildata->{$foil}->{'value'} eq 'true') {
606: $correct = $foildata->{$foil}->{'name'};
607: }
608: }
609: }
610: #
611: if (! defined($response_data) || ref($response_data) ne 'ARRAY' ) {
612: $analysis_html = '<h2>'.
613: &mt('There is no submission data for this resource').
614: '</h2>';
615: $r->print($analysis_html);
616: return;
617: }
618: #
619: $analysis_html.='<table>';
620: for (my $plot_num = 1;$plot_num<=$ENV{'form.NumPlots'};$plot_num++) {
621: # classify data ->correct foil -> selected foil
622: my ($restriction_function,
623: $correct_foil_title,$incorrect_foil_title,
624: $pre_graph_text,$post_graph_text,
625: $no_data_text,@extra_data);
626: if ($ENV{'form.AnalyzeOver'} eq 'tries') {
627: $restriction_function = sub {($_[0]->{'tries'} == $plot_num?1:0)};
628: $correct_foil_title = 'Attempt '.$plot_num;
629: $incorrect_foil_title = 'Attempt '.$plot_num;
630: $pre_graph_text =
631: 'Attempt [_1], [_2] submissions, [_3] correct, [_4] incorrect';
632: $post_graph_text = '';
633: $no_data_text = 'No data exists for attempt [_1]';
634: } elsif ($ENV{'form.AnalyzeOver'} eq 'time') {
635: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
636: ('startdate_'.$plot_num);
637: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
638: ('enddate_'.$plot_num);
639: ($starttime,$endtime) = &ensure_start_end_times
640: ($starttime,$endtime,
641: &get_time_from_row($response_data->[0]),
642: &get_time_from_row($response_data->[-1]),
643: $plot_num);
644: $pre_graph_text =
645: 'Data from [_6] to [_7]<br /> [_2] submissions from [_5] students, [_3] correct, [_4] incorrect';
646: $extra_data[0] = &Apache::lonlocal::locallocaltime($starttime);
647: $extra_data[1] = &Apache::lonlocal::locallocaltime($endtime);
648: #
649: $post_graph_text =
650: &mt('Start time: [_1]',
651: &Apache::lonhtmlcommon::date_setter
652: ('Statistics','startdate_'.$plot_num,$starttime)).
653: '<br />'.
654: &mt('End time: [_1]',
655: &Apache::lonhtmlcommon::date_setter
656: ('Statistics','enddate_'.$plot_num,$endtime));
657: $restriction_function =
658: sub {
659: my $t = $_[0]->{'timestamp'};
660: if ($t >= $starttime && $t < $endtime) {
661: return 1;
662: } else {
663: return 0;
664: }
665: };
666: $no_data_text = 'No data for [_5] to [_6]';
667: }
668: my $foil_choice_data =
669: &classify_response_data($response_data,$correct,
670: $restriction_function);
671: # &Apache::lonstathelpers::log_hash_ref($foil_choice_data);
672: my $answers;
673: if (ref($correct)) {
674: my %tmp;
675: foreach my $foil (values(%$correct)) {
676: $tmp{$foil}++;
677: }
678: $answers = [keys(%tmp)];
679: } else {
680: $answers = [$correct];
681: }
682: # Concept Plot
683: my $concept_plot = '';
684: if (scalar(@$concepts) > 1) {
685: $concept_plot = &RR_concept_plot($concepts,$foil_choice_data,
686: 'Correct Concepts');
687: }
688: # % Choosing plot
689: my $choice_plot = &RR_create_percent_selected_plot
690: ($concepts,$foils,$foil_choice_data,$correct_foil_title);
691: # for each correct foil, how did they mark it? (stacked bar graph)
692: my ($stacked_plot,$count_by_foil);
693: if ($problem_analysis->{'answercomputed'} || $num_true > 1) {
694: ($stacked_plot,$count_by_foil) =
695: &RR_create_stacked_selection_plot($foils,$foil_choice_data,
696: $incorrect_foil_title,
697: \%true_foils);
698: }
699: #
700: if ($concept_plot ne '' ||
701: $choice_plot ne '' ||
702: $stacked_plot ne '') {
703: my $correct = $foil_choice_data->{'_correct'};
704: if (! defined($correct) || $correct eq '') {
705: $correct = 0;
706: }
707: my $incorrect =
708: $analysis_html.= '<tr><td colspan="4" align="center">'.
709: '<font size="+1">'.
710: &mt($pre_graph_text,
711: $plot_num,$foil_choice_data->{'_count'},
712: $correct,
713: $foil_choice_data->{'_count'}-$correct,
714: $foil_choice_data->{'_students'},
715: @extra_data).
716: '</td></tr>'.$/;
717: $analysis_html.=
718: '<tr>'.
719: '<td>'.$concept_plot.'</td>'.
720: '<td>'.$choice_plot.'</td>';
721: if ($stacked_plot ne '') {
722: $analysis_html .=
723: '<td>'.$stacked_plot.'</td>'.
724: '<td>'.&build_foil_key($foils,$count_by_foil).'</td>';
725: } else {
726: $analysis_html .= ('<td></td>'x2);
727: }
728: $analysis_html.='</tr>'.$/;
729: if (defined($post_graph_text)) {
730: $analysis_html.= '<tr><td colspan="4" align="center">'.
731: $post_graph_text.'</td></tr>'.$/;
732: }
733: } elsif ($no_data_text ne '') {
734: $analysis_html.='<tr><td colspan="4" align="center">'.
735: &mt($no_data_text,
736: $plot_num,$foil_choice_data->{'_count'},
737: $correct,
738: $foil_choice_data->{'_count'}-$correct,
739: @extra_data);
740: if (defined($post_graph_text)) {
741: $analysis_html.='<br />'.$post_graph_text;
742: }
743: $analysis_html.='</td></tr>'.$/;
744: }
745: } # end of loop for plots
746: $analysis_html.='</table>';
747: $r->print($analysis_html);
748: }
749:
750: sub ensure_start_end_times {
751: my ($start,$end,$first,$last,$plot_num) = @_;
752: if (! defined($start) || ! defined($end)) {
753: my $sec_in_day = 86400;
754: my ($sday,$smon,$syear) =
755: (localtime($last - $sec_in_day*($plot_num-1)))[3..5];
756: $start = &Time::Local::timelocal(0,0,0,$sday,$smon,$syear);
757: $end = $start + $sec_in_day;
758: if ($plot_num == $ENV{'form.NumPlots'}) {
759: $start = $first;
760: }
761: }
762: return ($start,$end);
763: }
764:
765: sub RR_concept_plot {
766: my ($concepts,$foil_data,$title) = @_;
767: #
768: my %correct_by_concept;
769: my %incorrect_by_concept;
770: my %true;
771: foreach my $concept (@$concepts) {
772: foreach my $foil (@{$concept->{'foils'}}) {
773: next if (! exists($foil_data->{$foil}));
774: foreach my $choice (keys(%{$foil_data->{$foil}})) {
775: if ($choice eq $foil) {
776: $correct_by_concept{$concept->{'name'}} +=
777: $foil_data->{$foil}->{$choice};
778: } else {
779: $incorrect_by_concept{$concept->{'name'}} +=
780: $foil_data->{$foil}->{$choice};
781:
782: }
783: }
784: }
785: }
786: #
787: # need arrays for incorrect and correct because we want to use different
788: # colors for them
789: my @correct;
790: #
791: my $total =0;
792: for (my $i=0;$i<scalar(@$concepts);$i++) {
793: my $concept = $concepts->[$i];
794: $correct[$i] = $correct_by_concept{$concept->{'name'}};
795: $total += $correct_by_concept{$concept->{'name'}}+
796: $incorrect_by_concept{$concept->{'name'}};
797: }
798: if ($total == 0) { return ''; };
799: for (my $i=0;$i<=$#correct;$i++) {
800: $correct[$i] = sprintf('%0f',$correct[$i]/$total*100);
801: }
802: my $xlabel = 'concept';
803: my $plot= &Apache::loncommon::DrawBarGraph($title,
804: $xlabel,
805: 'Percent Choosing',
806: 100,
807: ['#33ff00','#ff3300'],
808: undef,
809: \@correct);
810: return $plot;
811: }
812:
813: sub RR_create_percent_selected_plot {
814: my ($concepts,$foils,$foil_data,$title) = @_;
815: #
816: if ($foil_data->{'_count'} == 0) { return ''; };
817: my %correct_selections;
818: my %incorrect_selections;
819: foreach my $foil (@$foils) {
820: # foil_data has format $foil_data->{true_foil}->{selected foil}=count
821: next if (! exists($foil_data->{$foil}));
822: while (my ($f,$count)= each(%{$foil_data->{$foil}})) {
823: if ($f eq $foil) {
824: $correct_selections{$foil} += $count;
825: } else {
826: $incorrect_selections{$f} += $count;
827: }
828: }
829: }
830: #
831: # need arrays for incorrect and correct because we want to use different
832: # colors for them
833: my @correct;
834: my @incorrect;
835: #
836: my $total = $foil_data->{'_count'};
837: for (my $i=0;$i<scalar(@$foils);$i++) {
838: my $foil = $foils->[$i];
839: $correct[$i] = $correct_selections{$foil};
840: $incorrect[$i] = $incorrect_selections{$foil};
841: }
842: for (my $i=0;$i<=$#correct;$i++) {
843: $correct[$i] = sprintf('%2f',$correct[$i]/$total*100);
844: }
845: for (my $i=0;$i<=$#incorrect;$i++) {
846: $incorrect[$i] = sprintf('%2f',$incorrect[$i]/$total*100);
847: }
848: #
849: # Put a blank in the data sets between concepts, if there are concepts
850: my @labels;
851: if (defined($concepts) && scalar(@$concepts) > 1) {
852: my @new_correct;
853: my @new_incorrect;
854: my $foil_count = 0;
855: foreach my $concept (@$concepts) {
856: foreach (@{$concept->{'foils'}}) {
857: push(@new_correct, $correct[$foil_count]);
858: push(@new_incorrect,$incorrect[$foil_count]);
859: push(@labels,++$foil_count);
860: }
861: push(@new_correct,'');
862: push(@new_incorrect,'');
863: push(@labels,'');
864: }
865: @correct = @new_correct;
866: @incorrect = @new_incorrect;
867: } else {
868: @labels = (1 .. scalar(@correct));
869: }
870: #
871: my $xlabel = 'foil chosen';
872: my $plot= &Apache::loncommon::DrawBarGraph($title,
873: $xlabel,
874: 'Percent Choosing',
875: 100,
876: ['#33ff00','#ff3300'],
877: \@labels,
878: \@correct,
879: \@incorrect);
880: return $plot;
881: }
882:
883: sub RR_create_stacked_selection_plot {
884: my ($foils,$foil_data,$title,$true_foils)=@_;
885: #
886: my @dataset; # array of array refs - multicolor rows $datasets[row]->[col]
887: my @labels;
888: my $count;
889: my %column; # maps foil name to column in @datasets
890: for (my $i=0;$i<scalar(@$foils);$i++) {
891: my $foil = $foils->[$i];
892: if (defined($true_foils) && scalar(keys(%$true_foils)) > 0 ) {
893: next if (! $true_foils->{$foil} );
894: push(@labels,$i+1);
895: } else {
896: next if (! exists($foil_data->{$foil}));
897: push(@labels,$i+1);
898: }
899: next if (! exists($foil_data->{$foils->[$i]}));
900: $column{$foil}= $count++;
901: for (my $j=0;$j<scalar(@$foils);$j++) {
902: my $value = 0;
903: if ($i != $j ) {
904: $value += $foil_data->{$foil}->{$foils->[$j]};
905: }
906: $dataset[$j]->[$column{$foil}]=$value;
907: }
908: }
909: #
910: return '' if (! scalar(keys(%column)));
911: #
912: my $grand_total = 0;
913: my %count_per_foil;
914: while (my ($foil,$bar) = each (%column)) {
915: my $bar_total = 0;
916: for (my $j=0;$j<scalar(@dataset);$j++) {
917: $bar_total += $dataset[$j]->[$bar];
918: }
919: next if ($bar_total == 0);
920: for (my $j=0;$j<scalar(@dataset);$j++) {
921: $dataset[$j]->[$bar] =
922: sprintf('%2f',$dataset[$j]->[$bar]/$bar_total * 100);
923: }
924: $count_per_foil{$foil}=' ( '.$bar_total.' )';
925: $grand_total += $bar_total;
926: }
927: if ($grand_total == 0) {
928: return ('',undef);
929: }
930: my @empty_row = ();
931: foreach (@{$dataset[0]}) {
932: push(@empty_row,0);
933: }
934: #
935: my $graph = &Apache::loncommon::DrawBarGraph
936: ($title,'Correct Foil','foils chosen Incorrectly',
937: 100,$plotcolors,\@labels,\@empty_row,@dataset);
938: return ($graph,\%count_per_foil);
939: }
940:
941:
942: #########################################################
943: #########################################################
944: ##
945: ## Misc routines
946: ##
947: #########################################################
948: #########################################################
949:
950: # if $correct is a hash ref, it is assumed to be indexed by student names.
951: # the values are assumed to be hash refs with a key of 'answer'.
952: sub classify_response_data {
953: my ($full_row_data,$correct,$function) = @_;
954: my %submission_data;
955: my %students;
956: my $max=0;
957: foreach my $row (@$full_row_data) {
958: my %subm = &hashify_attempt($row);
959: if (ref($correct) eq 'HASH') {
960: $subm{'correct'} = $correct->{$subm{'student'}};
961: } else {
962: $subm{'correct'} = $correct;
963: }
964: $subm{'submission'} =~ s/=\d+\s*$//;
965: if (&$function(\%subm)) {
966: $students{$subm{'student'}}++;
967: $submission_data{'_count'}++;
968:
969: if (&submission_is_correct($subm{'award'})) {
970: $submission_data{'_correct'}++;
971: }
972:
973: if($max<++$submission_data{$subm{'correct'}}->{$subm{'submission'}}) {
974: $max=$submission_data{$subm{'correct'}}->{$subm{'submission'}};
975: }
976: }
977: }
978: $submission_data{'_max'} = $max;
979: $submission_data{'_students'}=scalar(keys(%students));
980: return \%submission_data;
981: }
982:
983:
984: #########################################################
985: #########################################################
986: ##
987: ## Option Response Routines
988: ##
989: #########################################################
990: #########################################################
991: sub OptionResponseAnalysis {
992: my ($r,$problem,$problem_data,$Students) = @_;
993: my ($resource,$respid) = ($problem->{'resource'},
994: $problem->{'respid'});
995: # Note: part data is not needed.
996: my $PerformanceData = &Apache::loncoursedata::get_response_data
997: (\@Apache::lonstatistics::SelectedSections,
998: $Apache::lonstatistics::enrollment_status,
999: $resource->{'symb'},$respid);
1000: if (! defined($PerformanceData) ||
1001: ref($PerformanceData) ne 'ARRAY' ) {
1002: $r->print('<h2>'.
1003: &mt('There is no student data for this problem.').
1004: '</h2>');
1005: } else {
1006: $r->rflush();
1007: if (exists($ENV{'form.ExcelOutput'})) {
1008: my $result = &OR_excel_sheet($r,$resource,
1009: $PerformanceData,
1010: $problem_data);
1011: $r->print($result);
1012: $r->rflush();
1013: } else {
1014: if ($ENV{'form.AnalyzeOver'} eq 'tries') {
1015: my $analysis_html = &OR_tries_analysis($r,
1016: $PerformanceData,
1017: $problem_data);
1018: $r->print($analysis_html);
1019: $r->rflush();
1020: } elsif ($ENV{'form.AnalyzeOver'} eq 'time') {
1021: my $analysis_html = &OR_time_analysis($PerformanceData,
1022: $problem_data);
1023: $r->print($analysis_html);
1024: $r->rflush();
1025: } else {
1026: $r->print('<h2>'.
1027: &mt('The analysis you have selected is '.
1028: 'not supported at this time').
1029: '</h2>');
1030: }
1031: }
1032: }
1033: }
1034:
1035: #########################################################
1036: #
1037: # Option Response: tries Analysis
1038: #
1039: #########################################################
1040: sub OR_tries_analysis {
1041: my ($r,$PerformanceData,$ORdata) = @_;
1042: my $mintries = 1;
1043: my $maxtries = $ENV{'form.NumPlots'};
1044: my ($table,$Foils,$Concepts) = &build_foil_index($ORdata);
1045: my %response_data = &OR_analyze_by_tries($r,$PerformanceData,
1046: $mintries,$maxtries);
1047: my $analysis = '';
1048: #
1049: # Compute the data necessary to make the plots
1050: my @foil_plot;
1051: my @concept_data;
1052: for (my $j=0;$j<=scalar(@$Concepts);$j++) {
1053: my $concept = $Concepts->[$j];
1054: foreach my $foilid (@{$concept->{'foils'}}) {
1055: for (my $try=$mintries;$try<=$maxtries;$try++) {
1056: # concept analysis data
1057: $concept_data[$j]->[$try]->{'_correct'} +=
1058: $response_data{$foilid}->[$try]->{'_correct'};
1059: $concept_data[$j]->[$try]->{'_total'} +=
1060: $response_data{$foilid}->[$try]->{'_total'};
1061: #
1062: # foil analysis data
1063: if ($response_data{$foilid}->[$try]->{'_total'} == 0) {
1064: push(@{$foil_plot[$try]->{'_correct'}},0);
1065: } else {
1066: push(@{$foil_plot[$try]->{'_correct'}},
1067: 100*$response_data{$foilid}->[$try]->{'_correct'}/
1068: $response_data{$foilid}->[$try]->{'_total'});
1069: }
1070: foreach my $option (@{$ORdata->{'_Options'}}) {
1071: push(@{$foil_plot[$try]->{'_total'}},
1072: $response_data{$foilid}->[$try]->{'_total'});
1073: if ($response_data{$foilid}->[$try]->{'_total'} == 0) {
1074: push (@{$foil_plot[$try]->{$option}},0);
1075: } else {
1076: if ($response_data{$foilid}->[$try]->{'_total'} ==
1077: $response_data{$foilid}->[$try]->{'_correct'}) {
1078: push(@{$foil_plot[$try]->{$option}},0);
1079: } else {
1080: push (@{$foil_plot[$try]->{$option}},
1081: 100 *
1082: $response_data{$foilid}->[$try]->{$option} /
1083: ($response_data{$foilid}->[$try]->{'_total'}
1084: -
1085: $response_data{$foilid}->[$try]->{'_correct'}
1086: ));
1087: }
1088: }
1089: } # End of foreach my $option
1090: }
1091: } # End of foreach my $foilid
1092: } # End of concept loops
1093: #
1094: # Build a table for the plots
1095: my $analysis_html = "<br /><table>\n";
1096: my $optionkey = &build_option_index($ORdata);
1097: my $num_concepts = 1;
1098: if (defined($Concepts)) { $num_concepts = scalar(@$Concepts); }
1099: #
1100: for (my $try=$mintries;$try<=$maxtries;$try++) {
1101: if (! defined($response_data{'_total'}->[$try]) ||
1102: $response_data{'_total'}->[$try] == 0) {
1103: if ($try > 1) {
1104: $analysis_html.= '<tr><td align="center" colspan="4"><b>'.
1105: &mt('None of the selected students attempted the problem more than [_1] times.',$try-1).
1106: '</b></td></tr>';
1107: } else {
1108: $analysis_html.= '<tr><td colspan="4" align="center"><b>'.
1109: &mt('None of the selected students have attempted the problem').'</b></td></tr>';
1110: }
1111: last;
1112: }
1113: my $concept_graph='';
1114: if ($num_concepts > 1) {
1115: #
1116: # Create concept plot
1117: my @concept_plot_data;
1118: for (my $j=0;$j<=$#concept_data;$j++) {
1119: my $total = $concept_data[$j]->[$try]->{'_total'};
1120: if ($total == 0) {
1121: $concept_plot_data[$j] = 0;
1122: } else {
1123: $concept_plot_data[$j] = 100 *
1124: sprintf('%0.3f',
1125: $concept_data[$j]->[$try]->{'_correct'} /
1126: $total);
1127: }
1128: }
1129: #
1130: $concept_graph = &Apache::loncommon::DrawBarGraph
1131: ('Correct Concepts','Concept Number','Percent Correct',
1132: 100,$plotcolors,undef,\@concept_plot_data);
1133: }
1134: #
1135: # Create Foil Plots
1136: my $data_count = $response_data{'_total'}->[$try];
1137: my $correct = $response_data{'_correct'}->[$try];
1138: my @Datasets;
1139: foreach my $option ('_correct',@{$ORdata->{'_Options'}}) {
1140: next if (! exists($foil_plot[$try]->{$option}));
1141: push(@Datasets,$foil_plot[$try]->{$option});
1142: }
1143: #
1144: # Put a blank in the data set between concepts
1145: for (my $set =0;$set<=$#Datasets;$set++) {
1146: my @Data = @{$Datasets[$set]};
1147: my $idx = 0;
1148: foreach my $concept (@{$Concepts}) {
1149: foreach my $foilid (@{$concept->{'foils'}}) {
1150: $Datasets[$set]->[$idx++]=shift(@Data);
1151: }
1152: if ($concept->{'name'} ne $Concepts->[-1]->{'name'}) {
1153: $Datasets[$set]->[$idx++] = 0;
1154: }
1155: }
1156: }
1157: #
1158: # Set up the labels needed for the bar graph
1159: my @Labels;
1160: my $idx = 1;
1161: foreach my $concept (@{$Concepts}) {
1162: foreach my $foilid (@{$concept->{'foils'}}) {
1163: push(@Labels,$idx++);
1164: }
1165: push(@Labels,'');
1166: }
1167: #
1168: my $correct_graph = &Apache::loncommon::DrawBarGraph
1169: ('Correct Statements','Statement','% Answered Correct',
1170: 100,$plotcolors,\@Labels,$Datasets[0]);
1171:
1172: #
1173: #
1174: next if (! defined($Datasets[0]));
1175: for (my $i=0; $i< scalar(@{$Datasets[0]});$i++) {
1176: $Datasets[0]->[$i]=0;
1177: }
1178: my $count = $response_data{'_total'}->[$try] -
1179: $response_data{'_correct'}->[$try];
1180: my $incorrect_graph = &Apache::loncommon::DrawBarGraph
1181: ('Incorrect Statements','Statement','% Chosen Incorrectly',
1182: 100,$plotcolors,\@Labels,@Datasets);
1183: $analysis_html.=
1184: '<tr><td colspan="4" align="center">'.
1185: '<font size="+1">'.
1186: &mt('Attempt [_1], [_2] submissions, [_3] correct, [_4] incorrect',
1187: $try,$data_count,$correct,$data_count-$correct).
1188: '</font>'.'</td></tr>'.$/.
1189: '<tr>'.
1190: '<td>'.$concept_graph.'</td>'.
1191: '<td>'.$correct_graph.'</td>'.
1192: '<td>'.$incorrect_graph.'</td>'.
1193: '<td>'.$optionkey.'<td>'.
1194: '</tr>'.$/;
1195: }
1196: $analysis_html .= "</table>\n";
1197: $table .= $analysis_html;
1198: return $table;
1199: }
1200:
1201: sub OR_analyze_by_tries {
1202: my ($r,$PerformanceData,$mintries,$maxtries) = @_;
1203: my %Trydata;
1204: $mintries = 1 if (! defined($mintries) || $mintries < 1);
1205: $maxtries = $mintries if (! defined($maxtries) || $maxtries < $mintries);
1206: my @students;
1207: foreach my $row (@$PerformanceData) {
1208: next if (! defined($row));
1209: my $tries = &get_tries_from_row($row);
1210: my %Row = &Process_OR_Row($row);
1211: next if (! %Row);
1212: my $student_id = $row->[&Apache::loncoursedata::RD_student_id()];
1213: $students[$tries]->{$student_id}++;
1214: while (my ($foilid,$href) = each(%Row)) {
1215: if (! ref($href)) {
1216: $Trydata{$foilid}->[$tries] += $href;
1217: next;
1218: }
1219: while (my ($option,$value) = each(%$href)) {
1220: $Trydata{$foilid}->[$tries]->{$option}+=$value;
1221: }
1222: }
1223: }
1224: for (my $try=$mintries;$try<=$maxtries;$try++) {
1225: $Trydata{'_studentcount'}->[$try] = scalar(keys(%{$students[$try]}));
1226: }
1227: return %Trydata;
1228: }
1229:
1230: #########################################################
1231: #
1232: # Option Response: Time Analysis
1233: #
1234: #########################################################
1235: sub OR_time_analysis {
1236: my ($performance_data,$ORdata) = @_;
1237: my ($table,$Foils,$Concepts) = &build_foil_index($ORdata);
1238: my $foilkey = &build_option_index($ORdata);
1239: my $num_concepts = 1;
1240: if (defined($Concepts)) { $num_concepts = scalar(@$Concepts); }
1241: #
1242: if ($num_concepts < 2) {
1243: $table = '<h3>'.
1244: &mt('Not enough data for concept analysis. '.
1245: 'Performing Foil Analysis').
1246: '</h3>'.$table;
1247: }
1248: #
1249: my $num_plots = $ENV{'form.NumPlots'};
1250: my $num_data = scalar(@$performance_data)-1;
1251: #
1252: my $current_index;
1253: $table .= "<table>\n";
1254: for (my $i=0;$i<$num_plots;$i++) {
1255: ##
1256: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
1257: ('startdate_'.$i);
1258: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
1259: ('enddate_'.$i);
1260: if (! defined($starttime) || ! defined($endtime)) {
1261: my $sec_in_day = 86400;
1262: my $last_sub_time = &get_time_from_row($performance_data->[-1]);
1263: my ($sday,$smon,$syear) =
1264: (localtime($last_sub_time - $sec_in_day*$i))[3..5];
1265: $starttime = &Time::Local::timelocal(0,0,0,$sday,$smon,$syear);
1266: $endtime = $starttime + $sec_in_day;
1267: if ($i == ($num_plots -1 )) {
1268: $starttime = &get_time_from_row($performance_data->[0]);
1269: }
1270: }
1271: $table .= '<tr><td colspan="4" align="center"><font size="+1">'.
1272: &mt('Data from [_1] to [_2]',
1273: &Apache::lonlocal::locallocaltime($starttime),
1274: &Apache::lonlocal::locallocaltime($endtime)).
1275: '</font></td></tr>'.$/;
1276: my $startdateform = &Apache::lonhtmlcommon::date_setter
1277: ('Statistics','startdate_'.$i,$starttime);
1278: my $enddateform = &Apache::lonhtmlcommon::date_setter
1279: ('Statistics','enddate_'.$i,$endtime);
1280: #
1281: my $begin_index;
1282: my $end_index;
1283: my $j;
1284: while (++$j < scalar(@$performance_data)) {
1285: last if (&get_time_from_row($performance_data->[$j])
1286: > $starttime);
1287: }
1288: $begin_index = $j;
1289: while ($j < scalar(@$performance_data)) {
1290: if (&get_time_from_row($performance_data->[$j]) > $endtime) {
1291: last;
1292: } else {
1293: $j++;
1294: }
1295: }
1296: $end_index = $j;
1297: ##
1298: my ($processed_time_data,$correct,$data_count,$student_count) =
1299: &OR_time_process_data($performance_data,$begin_index,$end_index);
1300: ##
1301: $table .= '<tr><td colspan="4" align="center"><font size="+1">'.
1302: &mt('[_1] submissions from [_2] students, [_3] correct, [_4] incorrect',
1303: $data_count,$student_count,$correct,$data_count-$correct).
1304: '</font></td></tr>'.$/;
1305: my $concept_correct_plot = '';
1306: if ($num_concepts > 1) {
1307: $concept_correct_plot =
1308: &OR_Concept_Time_Analysis($processed_time_data,
1309: $correct,$data_count,$student_count,
1310: $ORdata,$Concepts);
1311: }
1312: my ($foil_correct_plot,$foil_incorrect_plot) =
1313: &OR_Foil_Time_Analysis($processed_time_data,
1314: $correct,$data_count,$student_count,
1315: $ORdata,$Foils,$Concepts);
1316: $table .= '<tr>'.
1317: '<td>'.$concept_correct_plot.'</td>'.
1318: '<td>'.$foil_correct_plot.'</td>'.
1319: '<td>'.$foil_incorrect_plot.'</td>'.
1320: '<td align="left" valign="top">'.$foilkey.'</td></tr>'.$/;
1321: $table .= '<tr><td colspan="4" align="center">'.
1322: &mt('Start time: [_1]',$startdateform).'<br />'.
1323: &mt('End time: [_1]',$enddateform).'</td></tr>'.$/;
1324: $table.= '<tr><td colspan="4"> </td></tr>'.$/;
1325: }
1326: $table .= '</table>';
1327: #
1328: return $table;
1329: }
1330:
1331: sub OR_Foil_Time_Analysis {
1332: my ($processed_time_data,$correct,$data_count,$student_count,
1333: $ORdata,$Foils,$Concepts) = @_;
1334: if ($data_count <= 0) {
1335: return ('<h2>'.&mt('There is no data to plot').'</h2>','');
1336: }
1337: my $analysis_html;
1338: my @plotdata;
1339: my @labels;
1340: foreach my $concept (@{$Concepts}) {
1341: foreach my $foil (@{$concept->{'foils'}}) {
1342: push(@labels,scalar(@labels)+1);
1343: my $total = $processed_time_data->{$foil}->{'_total'};
1344: if ($total == 0) {
1345: push(@{$plotdata[0]},0);
1346: } else {
1347: push(@{$plotdata[0]},
1348: 100 * $processed_time_data->{$foil}->{'_correct'} / $total);
1349: }
1350: my $total_incorrect = $total - $processed_time_data->{$foil}->{'_correct'};
1351: for (my $i=0;$i<scalar(@{$ORdata->{'_Options'}});$i++) {
1352: my $option = $ORdata->{'_Options'}->[$i];
1353: if ($total_incorrect == 0) {
1354: push(@{$plotdata[$i+1]},0);
1355: } else {
1356: push(@{$plotdata[$i+1]},
1357: 100 * $processed_time_data->{$foil}->{$option} / $total_incorrect);
1358: }
1359: }
1360: }
1361: # Put in a blank one
1362: push(@labels,'');
1363: push(@{$plotdata[0]},0);
1364: for (my $i=0;$i<scalar(@{$ORdata->{'_Options'}});$i++) {
1365: push(@{$plotdata[$i+1]},0);
1366: }
1367: }
1368: #
1369: # Create the plot
1370: my $correct_plot = &Apache::loncommon::DrawBarGraph('Correct Statements',
1371: 'Statement Number',
1372: 'Percent Correct',
1373: 100,
1374: $plotcolors,
1375: undef,
1376: $plotdata[0]);
1377: for (my $j=0; $j< scalar(@{$plotdata[0]});$j++) {
1378: $plotdata[0]->[$j]=0;
1379: }
1380: my $incorrect_plot =
1381: &Apache::loncommon::DrawBarGraph('Incorrect Statements',
1382: 'Statement Number',
1383: 'Incorrect Option Choice',
1384: 100,
1385: $plotcolors,
1386: undef,
1387: @plotdata);
1388: return ($correct_plot,$incorrect_plot);
1389: }
1390:
1391: sub OR_Concept_Time_Analysis {
1392: my ($processed_time_data,$correct,$data_count,$student_count,
1393: $ORdata,$Concepts) = @_;
1394: return '' if ($data_count == 0);
1395: #
1396: # Put the data in plottable form
1397: my @plotdata;
1398: foreach my $concept (@$Concepts) {
1399: my ($total,$correct);
1400: foreach my $foil (@{$concept->{'foils'}}) {
1401: $total += $processed_time_data->{$foil}->{'_total'};
1402: $correct += $processed_time_data->{$foil}->{'_correct'};
1403: }
1404: if ($total == 0) {
1405: push(@plotdata,0);
1406: } else {
1407: push(@plotdata,100 * $correct / $total);
1408: }
1409: }
1410: #
1411: # Create the plot
1412: return &Apache::loncommon::DrawBarGraph('Correct Concepts',
1413: 'Concept Number',
1414: 'Percent Correct',
1415: 100,
1416: $plotcolors,
1417: undef,
1418: \@plotdata);
1419: }
1420:
1421: sub OR_time_process_data {
1422: my ($performance_data,$begin_index,$end_index)=@_;
1423: my %processed_time_data;
1424: my %distinct_students;
1425: my ($correct,$data_count);
1426: if (($begin_index == $end_index) &&
1427: ($end_index != scalar(@$performance_data)-1)) {
1428: return undef;
1429: }
1430: # Be sure we include the last one if we are asked for it.
1431: # That we have to correct here (and not when $end_index is
1432: # given a value) should probably be considered a bug.
1433: if ($end_index == scalar(@$performance_data)-1) {
1434: $end_index++;
1435: }
1436: my $count;
1437: for (my $i=$begin_index;$i<$end_index;$i++) {
1438: my $attempt = $performance_data->[$i];
1439: $count++;
1440: next if (! defined($attempt));
1441: my %attempt = &Process_OR_Row($attempt);
1442: $data_count++;
1443: $correct += $attempt{'_correct'};
1444: $distinct_students{$attempt->[&Apache::loncoursedata::RD_student_id()]}++;
1445: while (my ($foilid,$href) = each(%attempt)) {
1446: if (! ref($href)) {
1447: $processed_time_data{$foilid} += $href;
1448: next;
1449: }
1450: while (my ($option,$value) = each(%$href)) {
1451: $processed_time_data{$foilid}->{$option}+=$value;
1452: }
1453: }
1454: }
1455: return (\%processed_time_data,$correct,$data_count,
1456: scalar(keys(%distinct_students)));
1457: }
1458:
1459: #########################################################
1460: #########################################################
1461: ##
1462: ## Excel output
1463: ##
1464: #########################################################
1465: #########################################################
1466: sub OR_excel_sheet {
1467: my ($r,$resource,$performance_data,$ORdata) = @_;
1468: my $response = '';
1469: my (undef,$Foils,$Concepts) = &build_foil_index($ORdata);
1470: #
1471: # Create excel worksheet
1472: my $filename = '/prtspool/'.
1473: $ENV{'user.name'}.'_'.$ENV{'user.domain'}.'_'.
1474: time.'_'.rand(1000000000).'.xls';
1475: my $workbook = Spreadsheet::WriteExcel->new('/home/httpd'.$filename);
1476: if (! defined($workbook)) {
1477: $r->log_error("Error creating excel spreadsheet $filename: $!");
1478: $r->print('<p>'.&mt("Unable to create new Excel file. ".
1479: "This error has been logged. ".
1480: "Please alert your LON-CAPA administrator").
1481: '</p>');
1482: return undef;
1483: }
1484: #
1485: $workbook->set_tempdir('/home/httpd/perl/tmp');
1486: my $format = &Apache::loncommon::define_excel_formats($workbook);
1487: #
1488: # Create and populate main worksheets
1489: my $problem_data_sheet = $workbook->addworksheet('Problem Data');
1490: my $student_data_sheet = &build_student_data_worksheet($workbook,$format);
1491: my $response_data_sheet = $workbook->addworksheet('Response Data');
1492: foreach my $sheet ($problem_data_sheet,$student_data_sheet,
1493: $response_data_sheet) {
1494: $sheet->write(0,0,$resource->{'title'},$format->{'h2'});
1495: $sheet->write(1,0,$resource->{'src'},$format->{'h3'});
1496: }
1497: #
1498: my $result;
1499: $result = &OR_build_problem_data_worksheet($problem_data_sheet,$format,
1500: $Concepts,$ORdata);
1501: if ($result ne 'okay') {
1502: # Do something useful
1503: }
1504: $result = &OR_build_response_data_worksheet($response_data_sheet,$format,
1505: $performance_data,$Foils,
1506: $ORdata);
1507: if ($result ne 'okay') {
1508: # Do something useful
1509: }
1510: $response_data_sheet->activate();
1511: #
1512: # Close the excel file
1513: $workbook->close();
1514: #
1515: # Write a link to allow them to download it
1516: $result .= '<h2>'.&mt('Excel Raw Data Output').'</h2>'.
1517: '<p><a href="'.$filename.'">'.
1518: &mt('Your Excel spreadsheet.').
1519: '</a></p>'."\n";
1520: return $result;
1521: }
1522:
1523: sub OR_build_problem_data_worksheet {
1524: my ($worksheet,$format,$Concepts,$ORdata) = @_;
1525: my $rows_output = 3;
1526: my $cols_output = 0;
1527: $worksheet->write($rows_output++,0,'Problem Structure',$format->{'h3'});
1528: ##
1529: ##
1530: my @Headers;
1531: if (@$Concepts > 1) {
1532: @Headers = ("Concept\nNumber",'Concept',"Foil\nNumber",
1533: 'Foil Name','Foil Text','Correct value');
1534: } else {
1535: @Headers = ('Foil Number','FoilName','Foil Text','Correct value');
1536: }
1537: $worksheet->write_row($rows_output++,0,\@Headers,$format->{'header'});
1538: my %Foildata = %{$ORdata->{'_Foils'}};
1539: my $conceptindex = 1;
1540: my $foilindex = 1;
1541: foreach my $concept (@$Concepts) {
1542: my @FoilsInConcept = @{$concept->{'foils'}};
1543: my $firstfoil = shift(@FoilsInConcept);
1544: if (@$Concepts > 1) {
1545: $worksheet->write_row($rows_output++,0,
1546: [$conceptindex,
1547: $concept->{'name'},
1548: $foilindex++,
1549: $Foildata{$firstfoil}->{'name'},
1550: $Foildata{$firstfoil}->{'text'},
1551: $Foildata{$firstfoil}->{'value'},]);
1552: } else {
1553: $worksheet->write_row($rows_output++,0,
1554: [ $foilindex++,
1555: $Foildata{$firstfoil}->{'name'},
1556: $Foildata{$firstfoil}->{'text'},
1557: $Foildata{$firstfoil}->{'value'},]);
1558: }
1559: foreach my $foilid (@FoilsInConcept) {
1560: if (@$Concepts > 1) {
1561: $worksheet->write_row($rows_output++,0,
1562: ['',
1563: '',
1564: $foilindex,
1565: $Foildata{$foilid}->{'name'},
1566: $Foildata{$foilid}->{'text'},
1567: $Foildata{$foilid}->{'value'},]);
1568: } else {
1569: $worksheet->write_row($rows_output++,0,
1570: [$foilindex,
1571: $Foildata{$foilid}->{'name'},
1572: $Foildata{$foilid}->{'text'},
1573: $Foildata{$foilid}->{'value'},]);
1574: }
1575: } continue {
1576: $foilindex++;
1577: }
1578: } continue {
1579: $conceptindex++;
1580: }
1581: $rows_output++;
1582: $rows_output++;
1583: ##
1584: ## Option data output
1585: $worksheet->write($rows_output++,0,'Options',$format->{'header'});
1586: foreach my $string (@{$ORdata->{'_Options'}}) {
1587: $worksheet->write($rows_output++,0,$string);
1588: }
1589: return 'okay';
1590: }
1591:
1592: sub OR_build_response_data_worksheet {
1593: my ($worksheet,$format,$performance_data,$Foils,$ORdata)=@_;
1594: my $rows_output = 3;
1595: my $cols_output = 0;
1596: $worksheet->write($rows_output++,0,'Response Data',$format->{'h3'});
1597: $worksheet->set_column(1,1,20);
1598: $worksheet->set_column(2,2,13);
1599: my @Headers = ('identifier','time','award detail','attempt');
1600: foreach my $foil (@$Foils) {
1601: push (@Headers,$foil.' submission');
1602: push (@Headers,$foil.' grading');
1603: }
1604: $worksheet->write_row($rows_output++,0,\@Headers,$format->{'header'});
1605: #
1606: foreach my $row (@$performance_data) {
1607: next if (! defined($row));
1608: my ($student,$award,$grading,$submission,$time,$tries) = @$row;
1609: my @Foilgrades = split('&',$grading);
1610: my @Foilsubs = split('&',$submission);
1611: my %response_data;
1612: for (my $j=0;$j<=$#Foilgrades;$j++) {
1613: my ($foilid,$correct) = split('=',$Foilgrades[$j]);
1614: my (undef,$submission) = split('=',$Foilsubs[$j]);
1615: $submission = &Apache::lonnet::unescape($submission);
1616: $response_data{$foilid.' submission'}=$submission;
1617: $response_data{$foilid.' award'}=$correct;
1618: }
1619: $worksheet->write($rows_output,$cols_output++,$student);
1620: $worksheet->write($rows_output,$cols_output++,
1621: &Apache::lonstathelpers::calc_serial($time),$format->{'date'});
1622: $worksheet->write($rows_output,$cols_output++,$award);
1623: $worksheet->write($rows_output,$cols_output++,$tries);
1624: foreach my $foilid (@$Foils) {
1625: $worksheet->write($rows_output,$cols_output++,
1626: $response_data{$foilid.' submission'});
1627: $worksheet->write($rows_output,$cols_output++,
1628: $response_data{$foilid.' award'});
1629: }
1630: $rows_output++;
1631: $cols_output = 0;
1632: }
1633: return;
1634: }
1635:
1636: sub build_foil_index {
1637: my ($ORdata) = @_;
1638: return if (! exists($ORdata->{'_Foils'}));
1639: my %Foildata = %{$ORdata->{'_Foils'}};
1640: my @Foils = sort(keys(%Foildata));
1641: my %Concepts;
1642: foreach my $foilid (@Foils) {
1643: push(@{$Concepts{$Foildata{$foilid}->{'_Concept'}}},
1644: $foilid);
1645: }
1646: undef(@Foils);
1647: # Having gathered the concept information in a hash, we now translate it
1648: # into an array because we need to be consistent about order.
1649: # Also put the foils in order, too.
1650: my $sortfunction = sub {
1651: my %Numbers = (one => 1,
1652: two => 2,
1653: three => 3,
1654: four => 4,
1655: five => 5,
1656: six => 6,
1657: seven => 7,
1658: eight => 8,
1659: nine => 9,
1660: ten => 10,);
1661: my $a1 = lc($a);
1662: my $b1 = lc($b);
1663: if (exists($Numbers{$a1})) {
1664: $a1 = $Numbers{$a1};
1665: }
1666: if (exists($Numbers{$b1})) {
1667: $b1 = $Numbers{$b1};
1668: }
1669: if (($a1 =~/^\d+$/) && ($b1 =~/^\d+$/)) {
1670: return $a1 <=> $b1;
1671: } else {
1672: return $a1 cmp $b1;
1673: }
1674: };
1675: my @Concepts;
1676: foreach my $concept (sort $sortfunction (keys(%Concepts))) {
1677: if (! defined($Concepts{$concept})) {
1678: $Concepts{$concept}=[];
1679: # next;
1680: }
1681: push(@Concepts,{ name => $concept,
1682: foils => [@{$Concepts{$concept}}]});
1683: push(@Foils,(@{$Concepts{$concept}}));
1684: }
1685: #
1686: # Build up the table of row labels.
1687: my $table = '<table border="1" >'."\n";
1688: if (@Concepts > 1) {
1689: $table .= '<tr>'.
1690: '<th>'.&mt('Concept Number').'</th>'.
1691: '<th>'.&mt('Concept').'</th>'.
1692: '<th>'.&mt('Foil Number').'</th>'.
1693: '<th>'.&mt('Foil Name').'</th>'.
1694: '<th>'.&mt('Foil Text').'</th>'.
1695: '<th>'.&mt('Correct Value').'</th>'.
1696: "</tr>\n";
1697: } else {
1698: $table .= '<tr>'.
1699: '<th>'.&mt('Foil Number').'</th>'.
1700: '<th>'.&mt('Foil Name').'</th>'.
1701: '<th>'.&mt('Foil Text').'</th>'.
1702: '<th>'.&mt('Correct Value').'</th>'.
1703: "</tr>\n";
1704: }
1705: my $conceptindex = 1;
1706: my $foilindex = 1;
1707: foreach my $concept (@Concepts) {
1708: my @FoilsInConcept = @{$concept->{'foils'}};
1709: my $firstfoil = shift(@FoilsInConcept);
1710: if (@Concepts > 1) {
1711: $table .= '<tr>'.
1712: '<td>'.$conceptindex.'</td>'.
1713: '<td>'.&HTML::Entities::encode($concept->{'name'},'<>&"').'</td>'.
1714: '<td>'.$foilindex++.'</td>'.
1715: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'name'},'<>&"').'</td>'.
1716: '<td>'.$Foildata{$firstfoil}->{'text'}.'</td>'.
1717: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'value'},'<>&"').'</td>'.
1718: "</tr>\n";
1719: } else {
1720: $table .= '<tr>'.
1721: '<td>'.$foilindex++.'</td>'.
1722: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'name'},'<>&"').'</td>'.
1723: '<td>'.$Foildata{$firstfoil}->{'text'}.'</td>'.
1724: '<td>'.&HTML::Entities::encode($Foildata{$firstfoil}->{'value'},'<>&"').'</td>'.
1725: "</tr>\n";
1726: }
1727: foreach my $foilid (@FoilsInConcept) {
1728: if (@Concepts > 1) {
1729: $table .= '<tr>'.
1730: '<td></td>'.
1731: '<td></td>'.
1732: '<td>'.$foilindex.'</td>'.
1733: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'name'},'<>&"').'</td>'.
1734: '<td>'.$Foildata{$foilid}->{'text'}.'</td>'.
1735: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'value'},'<>&"').'</td>'.
1736: "</tr>\n";
1737: } else {
1738: $table .= '<tr>'.
1739: '<td>'.$foilindex.'</td>'.
1740: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'name'},'<>&"').'</td>'.
1741: '<td>'.$Foildata{$foilid}->{'text'}.'</td>'.
1742: '<td>'.&HTML::Entities::encode($Foildata{$foilid}->{'value'},'<>&"').'</td>'.
1743: "</tr>\n";
1744: }
1745: } continue {
1746: $foilindex++;
1747: }
1748: } continue {
1749: $conceptindex++;
1750: }
1751: $table .= "</table>\n";
1752: #
1753: # Build option index with color stuff
1754: return ($table,\@Foils,\@Concepts);
1755: }
1756:
1757: sub build_option_index {
1758: my ($ORdata)= @_;
1759: my $table = "<table>\n";
1760: my $optionindex = 0;
1761: my @Rows;
1762: foreach my $option (&mt('correct option chosen'),@{$ORdata->{'_Options'}}) {
1763: my $color = $plotcolors->[$optionindex++];
1764: push (@Rows,
1765: '<tr>'.
1766: '<td bgcolor="'.$color.'">'.
1767: '<font color="'.$color.'">'.('*'x3).'</font>'.'</td>'.
1768: '<td>'.&HTML::Entities::encode($option,'<>&"').'</td>'.
1769: "</tr>\n");
1770: }
1771: shift(@Rows); # Throw away 'correct option chosen' color
1772: $table .= join('',reverse(@Rows));
1773: $table .= "</table>\n";
1774: }
1775:
1776: sub build_foil_key {
1777: my ($foils,$extra_data)= @_;
1778: if (! defined($extra_data)) { $extra_data = {}; }
1779: my $table = "<table>\n";
1780: my $foil_index = 0;
1781: my @rows;
1782: foreach my $foil (&mt('correct foil chosen'),@{$foils}) {
1783: my $color = $plotcolors->[$foil_index++];
1784: push (@rows,
1785: '<tr>'.
1786: '<td bgcolor="'.$color.'" class="key">'.
1787: '<font color="'.$color.'">'.('*'x4).'</font></td>'.
1788: '<td>'.&HTML::Entities::encode($foil,'<>&"').
1789: (' 'x2).$extra_data->{$foil}.'</td>'.
1790: "</tr>\n");
1791: }
1792: shift(@rows); # Throw away 'correct foil chosen' color
1793: $table .= join('',reverse(@rows));
1794: $table .= "</table>\n";
1795: }
1796:
1797: #########################################################
1798: #########################################################
1799: ##
1800: ## Generic Interface Routines
1801: ##
1802: #########################################################
1803: #########################################################
1804: sub CreateInterface {
1805: ##
1806: ## Environment variable initialization
1807: if (! exists$ENV{'form.AnalyzeOver'}) {
1808: $ENV{'form.AnalyzeOver'} = 'tries';
1809: }
1810: ##
1811: ## Build the menu
1812: my $Str = '';
1813: $Str .= &Apache::lonhtmlcommon::breadcrumbs
1814: (undef,'Detailed Problem Analysis');
1815: $Str .= '<table cellspacing="5">'."\n";
1816: $Str .= '<tr>';
1817: $Str .= '<td align="center"><b>'.&mt('Sections').'</b></td>';
1818: $Str .= '<td align="center"><b>'.&mt('Enrollment Status').'</b></td>';
1819: # $Str .= '<td align="center"><b>'.&mt('Sequences and Folders').'</b></td>';
1820: $Str .= '<td align="center"> </td>';
1821: $Str .= '</tr>'."\n";
1822: ##
1823: ##
1824: $Str .= '<tr><td align="center">'."\n";
1825: $Str .= &Apache::lonstatistics::SectionSelect('Section','multiple',5);
1826: $Str .= '</td>';
1827: #
1828: $Str .= '<td align="center">';
1829: $Str .= &Apache::lonhtmlcommon::StatusOptions(undef,undef,5);
1830: $Str .= '</td>';
1831: #
1832: # $Str .= '<td align="center">';
1833: my $only_seq_with_assessments = sub {
1834: my $s=shift;
1835: if ($s->{'num_assess'} < 1) {
1836: return 0;
1837: } else {
1838: return 1;
1839: }
1840: };
1841: &Apache::lonstatistics::MapSelect('Maps','multiple,all',5,
1842: $only_seq_with_assessments);
1843: ##
1844: ##
1845: $Str .= '<td>';
1846: ##
1847: my $showprob_checkbox =
1848: '<input type="checkbox" name="show_prob" value="true" ';
1849: if ($ENV{'form.show_prob'} eq 'true') {
1850: $showprob_checkbox .= 'checked ';
1851: }
1852: $showprob_checkbox.= ' />';
1853: $Str.= '<nobr><label>'.
1854: &mt('Show problem [_1]',$showprob_checkbox).
1855: '</label></nobr><br />';
1856: ##
1857: my $analyze_selector = '<select name="AnalyzeOver" >';
1858: $analyze_selector .= '<option value="tries" ';
1859: if (! exists($ENV{'form.AnalyzeOver'}) ||
1860: $ENV{'form.AnalyzeOver'} eq 'tries'){
1861: # Default to tries
1862: $analyze_selector .= ' selected ';
1863: }
1864: $analyze_selector .= '>'.&mt('Tries').'</option>';
1865: $analyze_selector .= '<option value="time" ';
1866: $analyze_selector .= ' selected ' if ($ENV{'form.AnalyzeOver'} eq 'time');
1867: $analyze_selector .= '>'.&mt('Time').'</option>';
1868: $analyze_selector .= '</select>';
1869: $Str .= '<nobr><label>'.
1870: &mt('Analyze Over [_1] [_2]',
1871: $analyze_selector,
1872: &Apache::loncommon::help_open_topic('Analysis_Analyze_Over')).
1873: '</label></nobr><br />'.$/;
1874: ##
1875: my $numplots_selector = '<select name="NumPlots">';
1876: if (! exists($ENV{'form.NumPlots'})
1877: || $ENV{'form.NumPlots'} < 1
1878: || $ENV{'form.NumPlots'} > 20) {
1879: $ENV{'form.NumPlots'} = 5;
1880: }
1881: foreach my $i (1,2,3,4,5,6,7,8,10,15,20) {
1882: $numplots_selector .= '<option value="'.$i.'" ';
1883: if ($ENV{'form.NumPlots'} == $i) { $numplots_selector.=' selected '; }
1884: $numplots_selector .= '>'.$i.'</option>';
1885: }
1886: $numplots_selector .= '</select></nobr><br />';
1887: $Str .= '<nobr><label>'.&mt('Number of Plots [_1]',$numplots_selector).
1888: '</label></nobr>';
1889: ##
1890: $Str .= '<nobr><label>'.&mt('Status: [_1]',
1891: '<input type="text" '.
1892: 'name="stats_status" size="60" value="" />'
1893: ).
1894: '</label></nobr>';
1895: $Str .= '</td>';
1896: ##
1897: ##
1898: $Str .= '</tr>'."\n";
1899: $Str .= '</table>'."\n";
1900: return $Str;
1901: }
1902:
1903: #########################################################
1904: #########################################################
1905: ##
1906: ## Misc Option Response functions
1907: ##
1908: #########################################################
1909: #########################################################
1910: sub get_time_from_row {
1911: my ($row) = @_;
1912: if (ref($row)) {
1913: return $row->[&Apache::loncoursedata::RD_timestamp()];
1914: }
1915: return undef;
1916: }
1917:
1918: sub get_tries_from_row {
1919: my ($row) = @_;
1920: if (ref($row)) {
1921: return $row->[&Apache::loncoursedata::RD_tries()];
1922: }
1923: return undef;
1924: }
1925:
1926: sub hashify_attempt {
1927: my ($row) = @_;
1928: my %attempt;
1929: $attempt{'student'} = $row->[&Apache::loncoursedata::RD_sname()];
1930: $attempt{'tries'} = $row->[&Apache::loncoursedata::RD_tries()];
1931: $attempt{'submission'} = &Apache::lonnet::unescape($row->[&Apache::loncoursedata::RD_submission()]);
1932: $attempt{'award'} = $row->[&Apache::loncoursedata::RD_awarddetail()];
1933: $attempt{'timestamp'} = $row->[&Apache::loncoursedata::RD_timestamp()];
1934: return %attempt;
1935: }
1936:
1937: sub Process_OR_Row {
1938: my ($row) = @_;
1939: my %RowData;
1940: # my $student_id = $row->[&Apache::loncoursedata::RD_student_id()];
1941: my $award = $row->[&Apache::loncoursedata::RD_awarddetail()];
1942: my $grading = $row->[&Apache::loncoursedata::RD_response_eval()];
1943: my $submission = $row->[&Apache::loncoursedata::RD_submission()];
1944: my $time = $row->[&Apache::loncoursedata::RD_timestamp()];
1945: # my $tries = $row->[&Apache::loncoursedata::RD_tries()];
1946: return undef if ($award eq 'MISSING_ANSWER');
1947: if (&submission_is_correct($award)) {
1948: $RowData{'_correct'} = 1;
1949: }
1950: $RowData{'_total'} = 1;
1951: my @Foilgrades = split('&',$grading);
1952: my @Foilsubs = split('&',$submission);
1953: for (my $j=0;$j<=$#Foilgrades;$j++) {
1954: my ($foilid,$correct) = split('=',$Foilgrades[$j]);
1955: $foilid = &Apache::lonnet::unescape($foilid);
1956: my (undef,$submission) = split('=',$Foilsubs[$j]);
1957: if ($correct) {
1958: $RowData{$foilid}->{'_correct'}++;
1959: } else {
1960: $submission = &Apache::lonnet::unescape($submission);
1961: $RowData{$foilid}->{$submission}++;
1962: }
1963: $RowData{$foilid}->{'_total'}++;
1964: }
1965: return %RowData;
1966: }
1967:
1968: sub submission_is_correct {
1969: my ($award) = @_;
1970: if ($award =~ /(APPROX_ANS|EXACT_ANS)/) {
1971: return 1;
1972: } else {
1973: return 0;
1974: }
1975: }
1976:
1977: 1;
1978:
1979: __END__
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