1: # The LearningOnline Network with CAPA
2: #
3: # $Id: lonproblemanalysis.pm,v 1.46 2003/10/24 13:38:06 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:
28: package Apache::lonproblemanalysis;
29:
30: use strict;
31: use Apache::lonnet();
32: use Apache::loncommon();
33: use Apache::lonhtmlcommon();
34: use Apache::loncoursedata();
35: use Apache::lonstatistics;
36: use Apache::lonlocal;
37: use HTML::Entities();
38: use Time::Local();
39: use Spreadsheet::WriteExcel();
40:
41: my $plotcolors = ['#33ff00',
42: '#0033cc', '#990000', '#aaaa66', '#663399', '#ff9933',
43: '#66ccff', '#ff9999', '#cccc33', '#660000', '#33cc66',
44: ];
45:
46: my @SubmitButtons = ({ name => 'ProblemAnalyis',
47: text => 'Analyze Problem Again' },
48: { name => 'ClearCache',
49: text => 'Clear Caches' },
50: { name => 'updatecaches',
51: text => 'Update Student Data' },
52: { name => 'SelectAnother',
53: text => 'Choose a different resource' },
54: { name => 'ExcelOutput',
55: text => 'Produce Excel Output' });
56:
57: sub render_resource {
58: my ($resource) = @_;
59: ##
60: ## Render the problem
61: my $base;
62: ($base,undef) = ($resource->{'src'} =~ m|(.*/)[^/]*$|);
63: $base = "http://".$ENV{'SERVER_NAME'}.$base;
64: my $rendered_problem =
65: &Apache::lonnet::ssi_body($resource->{'src'});
66: $rendered_problem =~ s/<\s*form\s*/<nop /g;
67: $rendered_problem =~ s|(<\s*/form\s*>)|<\/nop>|g;
68: return '<table bgcolor="ffffff"><tr><td>'.
69: '<base href="'.$base.'" />'.
70: $rendered_problem.
71: '</td></tr></table>';
72: }
73:
74: sub BuildProblemAnalysisPage {
75: my ($r,$c)=@_;
76: $r->print('<h2>'.&mt('Option Response Problem Analysis').'</h2>');
77: $r->print(&CreateInterface());
78: #
79: my @Students = @Apache::lonstatistics::Students;
80: #
81: if (@Students < 1) {
82: $r->print('<h2>There are no students in the sections selected</h2>');
83: }
84: #
85: &Apache::loncoursedata::clear_internal_caches();
86: if (exists($ENV{'form.ClearCache'}) ||
87: exists($ENV{'form.updatecaches'}) ||
88: (exists($ENV{'form.firstanalysis'}) &&
89: $ENV{'form.firstanalysis'} ne 'no')) {
90: &Apache::lonstatistics::Gather_Full_Student_Data($r);
91: }
92: if (! exists($ENV{'form.firstanalysis'})) {
93: $r->print('<input type="hidden" name="firstanalysis" value="yes" />');
94: } else {
95: $r->print('<input type="hidden" name="firstanalysis" value="no" />');
96: }
97: $r->rflush();
98: #
99: if (exists($ENV{'form.problemchoice'}) &&
100: ! exists($ENV{'form.SelectAnother'})) {
101: foreach my $button (@SubmitButtons) {
102: $r->print('<input type="submit" name="'.$button->{'name'}.'" '.
103: 'value="'.&mt($button->{'text'}).'" />');
104: $r->print(' 'x5);
105: }
106: $r->print('<input type="hidden" name="problemchoice" value="'.
107: $ENV{'form.problemchoice'}.'" />');
108: #
109: $r->print('<hr />');
110: #
111: my ($symb,$part,$resid) = &get_problem_symb(
112: &Apache::lonnet::unescape($ENV{'form.problemchoice'}));
113: $r->rflush();
114: #
115: my $resource = &get_resource_from_symb($symb);
116: if (! defined($resource)) {
117: $r->print('resource is undefined');
118: } else {
119: $r->print('<h1>'.$resource->{'title'}.'</h1>');
120: $r->print('<h3>'.$resource->{'src'}.'</h3>');
121: $r->rflush();
122: my %Data = &get_problem_data($resource->{'src'});
123: my $ProblemData = $Data{$part.'.'.$resid};
124: &OptionResponseAnalysis($r,$resource,$resid,$ProblemData,
125: \@Students);
126: }
127: $r->print('<hr />');
128: } else {
129: $r->print('<input type="submit" name="ProblemAnalysis" value="'.
130: &mt('Analyze Problem').'" />');
131: $r->print(' 'x5);
132: $r->print('<h3>'.&mt('Please select a problem to analyze').'</h3>');
133: $r->print(&ProblemSelector());
134: }
135: }
136:
137: #########################################################
138: #########################################################
139: ##
140: ## Option Response Routines
141: ##
142: #########################################################
143: #########################################################
144: sub OptionResponseAnalysis {
145: my ($r,$resource,$resid,$ProblemData,$Students) = @_;
146: &Apache::lonnet::logthis('resid = '.$resid);
147: my $PerformanceData =
148: &Apache::loncoursedata::get_optionresponse_data
149: ($Students,$resource->{'symb'},$resid);
150: if (! defined($PerformanceData) ||
151: ref($PerformanceData) ne 'ARRAY' ) {
152: $r->print('<h2>'.
153: &mt('There is no student data for this problem.').
154: '</h2>');
155: } else {
156: $r->print(&render_resource($resource));
157: $r->rflush();
158: if (exists($ENV{'form.ExcelOutput'})) {
159: my $result = &prepare_optionresponse_excel_sheet($r,$resource,
160: $PerformanceData,
161: $ProblemData);
162: $r->print($result);
163: $r->rflush();
164: } else {
165: if ($ENV{'form.AnalyzeOver'} eq 'Tries') {
166: my $analysis_html = &tries_analysis($r,
167: $PerformanceData,
168: $ProblemData);
169: $r->print($analysis_html);
170: $r->rflush();
171: } elsif ($ENV{'form.AnalyzeOver'} eq 'Time') {
172: my $analysis_html = &time_analysis($PerformanceData,
173: $ProblemData);
174: $r->print($analysis_html);
175: $r->rflush();
176: } else {
177: $r->print('<h2>'.
178: &mt('The analysis you have selected is '.
179: 'not supported at this time').
180: '</h2>');
181: }
182: }
183: }
184: }
185:
186: #########################################################
187: #
188: # Option Response: Tries Analysis
189: #
190: #########################################################
191: sub tries_analysis {
192: my ($r,$PerformanceData,$ORdata) = @_;
193: my $mintries = 1;
194: my $maxtries = $ENV{'form.NumPlots'};
195: my ($table,$Foils,$Concepts) = &build_foil_index($ORdata);
196: if ((@$Concepts < 2) && ($ENV{'form.AnalyzeAs'} ne 'Foils')) {
197: $table = '<h3>'.
198: &mt('Not enough data for concept analysis. '.
199: 'Performing Foil Analysis').
200: '</h3>'.$table;
201: $ENV{'form.AnalyzeAs'} = 'Foils';
202: }
203: my %ResponseData = &analyze_option_data_by_tries($r,$PerformanceData,
204: $mintries,$maxtries);
205: my $analysis = '';
206: if ($ENV{'form.AnalyzeAs'} eq 'Foils') {
207: $analysis = &Tries_Foil_Analysis($mintries,$maxtries,$Foils,
208: \%ResponseData,$ORdata);
209: } else {
210: $analysis = &Tries_Concept_Analysis($mintries,$maxtries,
211: $Concepts,\%ResponseData,$ORdata);
212: }
213: $table .= $analysis;
214: return $table;
215: }
216:
217: sub Tries_Foil_Analysis {
218: my ($mintries,$maxtries,$Foils,$respdat,$ORdata) = @_;
219: my %ResponseData = %$respdat;
220: #
221: # Compute the data neccessary to make the plots
222: my @PlotData;
223: foreach my $foilid (@$Foils) {
224: for (my $i=$mintries;$i<=$maxtries;$i++) {
225: if ($ResponseData{$foilid}->[$i]->{'_total'} == 0) {
226: push(@{$PlotData[$i]->{'_correct'}},0);
227: } else {
228: push(@{$PlotData[$i]->{'_correct'}},
229: 100*$ResponseData{$foilid}->[$i]->{'_correct'}/
230: $ResponseData{$foilid}->[$i]->{'_total'});
231: }
232: foreach my $option (@{$ORdata->{'Options'}}) {
233: push(@{$PlotData[$i]->{'_total'}},
234: $ResponseData{$foilid}->[$i]->{'_total'});
235: if ($ResponseData{$foilid}->[$i]->{'_total'} == 0) {
236: push (@{$PlotData[$i]->{$option}},0);
237: } else {
238: if ($ResponseData{$foilid}->[$i]->{'_total'} ==
239: $ResponseData{$foilid}->[$i]->{'_correct'}) {
240: push(@{$PlotData[$i]->{$option}},0);
241: } else {
242: push (@{$PlotData[$i]->{$option}},
243: 100 * $ResponseData{$foilid}->[$i]->{$option} /
244: ($ResponseData{$foilid}->[$i]->{'_total'} -
245: $ResponseData{$foilid}->[$i]->{'_correct'}));
246: }
247: }
248: }
249: }
250: }
251: #
252: # Build a table for the plots
253: my $analysis_html = "<table>\n";
254: my $foilkey = &build_option_index($ORdata);
255: for (my $i=$mintries;$i<=$maxtries;$i++) {
256: my $count = $ResponseData{'_total'}->[$i];
257: if ($count == 0) {
258: $count = 'no submissions';
259: } elsif ($count == 1) {
260: $count = '1 submission';
261: } else {
262: $count = $count.' submissions';
263: }
264: my $title = 'Attempt '.$i.', '.$count;
265: my @Datasets;
266: foreach my $option ('_correct',@{$ORdata->{'Options'}}) {
267: next if (! exists($PlotData[$i]->{$option}));
268: push(@Datasets,$PlotData[$i]->{$option});
269: }
270: my $correctgraph = &Apache::loncommon::DrawBarGraph
271: ($title,'Foil Number','Percent Correct',
272: 100,$plotcolors,$Datasets[0]);
273: $analysis_html.= '<tr><td>'.$correctgraph.'</td>';
274: ##
275: ##
276: for (my $i=0; $i< scalar(@{$Datasets[0]});$i++) {
277: $Datasets[0]->[$i]=0;
278: }
279: $count = $ResponseData{'_total'}->[$i]-$ResponseData{'_correct'}->[$i];
280: if ($count == 0) {
281: $count = 'no submissions';
282: } elsif ($count == 1) {
283: $count = '1 submission';
284: } else {
285: $count = $count.' submissions';
286: }
287: $title = 'Attempt '.$i.', '.$count;
288: my $incorrectgraph = &Apache::loncommon::DrawBarGraph
289: ($title,'Foil Number','% Option Chosen Incorrectly',
290: 100,$plotcolors,@Datasets);
291: $analysis_html.= '<td>'.$incorrectgraph.'</td>';
292: $analysis_html.= '<td>'.$foilkey."<td></tr>\n";
293: }
294: $analysis_html .= "</table>\n";
295: return $analysis_html;
296: }
297:
298: sub Tries_Concept_Analysis {
299: my ($mintries,$maxtries,$Concepts,$respdat,$ORdata) = @_;
300: my %ResponseData = %$respdat;
301: my $analysis_html = "<table>\n";
302: #
303: # Compute the data neccessary to make the plots
304: my @PlotData;
305: # Concept analysis
306: #
307: # Note: we do not bother with characterizing the students incorrect
308: # answers at the concept level because an incorrect answer for one foil
309: # may be a correct answer for another foil.
310: my %ConceptData;
311: foreach my $concept (@{$Concepts}) {
312: for (my $i=$mintries;$i<=$maxtries;$i++) {
313: #
314: # Gather the per-attempt data
315: my $cdata = $ConceptData{$concept}->[$i];
316: foreach my $foilid (@{$concept->{'foils'}}) {
317: $cdata->{'_correct'} +=
318: $ResponseData{$foilid}->[$i]->{'_correct'};
319: $cdata->{'_total'} +=
320: $ResponseData{$foilid}->[$i]->{'_total'};
321: }
322: push (@{$PlotData[$i]->{'_total'}},$cdata->{'_total'});
323: if ($cdata->{'_total'} == 0) {
324: push (@{$PlotData[$i]->{'_correct'}},0);
325: } else {
326: push (@{$PlotData[$i]->{'_correct'}},
327: 100*$cdata->{'_correct'}/$cdata->{'_total'});
328: }
329: }
330: }
331: # Build a table for the plots
332: for (my $i=$mintries;$i<=$maxtries;$i++) {
333: my $minstu = $PlotData[$i]->{'_total'}->[0];
334: my $maxstu = $PlotData[$i]->{'_total'}->[0];
335: foreach my $count (@{$PlotData[$i]->{'_total'}}) {
336: if ($minstu > $count) {
337: $minstu = $count;
338: }
339: if ($maxstu < $count) {
340: $maxstu = $count;
341: }
342: }
343: $maxstu = 0 if (! defined($maxstu));
344: $minstu = 0 if (! defined($minstu));
345: my $title;
346: my $count = $ResponseData{'_total'}->[$i];
347: if ($count == 0) {
348: $count = 'no submissions';
349: } elsif ($count == 1) {
350: $count = '1 submission';
351: } else {
352: $count = $count.' submissions';
353: }
354: $title = 'Attempt '.$i.', '.$count;
355: my $graphlink = &Apache::loncommon::DrawBarGraph
356: ($title,'Concept Number','Percent Correct',
357: 100,$plotcolors,$PlotData[$i]->{'_correct'});
358: $analysis_html.= '<tr><td>'.$graphlink."</td></tr>\n";
359: }
360: $analysis_html .= "</table>\n";
361: return $analysis_html;
362: }
363:
364: sub analyze_option_data_by_tries {
365: my ($r,$PerformanceData,$mintries,$maxtries) = @_;
366: my %Trydata;
367: $mintries = 1 if (! defined($mintries) || $mintries < 1);
368: $maxtries = $mintries if (! defined($maxtries) || $maxtries < $mintries);
369: foreach my $row (@$PerformanceData) {
370: next if (! defined($row));
371: my $tries = &get_tries_from_OR_row($row);
372: my %Row = &Process_OR_Row($row);
373: next if (! %Row);
374: while (my ($foilid,$href) = each(%Row)) {
375: if (! ref($href)) {
376: $Trydata{$foilid}->[$tries] += $href;
377: next;
378: }
379: while (my ($option,$value) = each(%$href)) {
380: $Trydata{$foilid}->[$tries]->{$option}+=$value;
381: }
382: }
383: }
384: return %Trydata;
385: }
386:
387: #########################################################
388: #
389: # Option Response: Time Analysis
390: #
391: #########################################################
392: sub time_analysis {
393: my ($PerformanceData,$ORdata) = @_;
394: my ($table,$Foils,$Concepts) = &build_foil_index($ORdata);
395: if ((@$Concepts < 2) && ($ENV{'form.AnalyzeAs'} ne 'Foils')) {
396: $table = '<h3>'.
397: &mt('Not enough data for concept analysis. '.
398: 'Performing Foil Analysis').
399: '</h3>'.$table;
400: $ENV{'form.AnalyzeAs'} = 'Foils';
401: }
402: my $num_plots = $ENV{'form.NumPlots'};
403: my $num_data = scalar(@$PerformanceData)-1;
404: my $percent = sprintf('%2f',100/$num_plots);
405: #
406: $table .= "<table>\n";
407: for (my $i=0;$i<$num_plots;$i++) {
408: ##
409: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
410: ('startdate_'.$i);
411: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
412: ('enddate_'.$i);
413: if (! defined($starttime) || ! defined($endtime)) {
414: my $sec_in_day = 86400;
415: my $last_sub_time = &get_time_from_OR_row($PerformanceData->[-1]);
416: my ($sday,$smon,$syear);
417: (undef,undef,undef,$sday,$smon,$syear) =
418: localtime($last_sub_time - $sec_in_day*$i);
419: $starttime = &Time::Local::timelocal(0,0,0,$sday,$smon,$syear);
420: $endtime = $starttime + $sec_in_day;
421: if ($i == ($num_plots -1 )) {
422: $starttime = &get_time_from_OR_row($PerformanceData->[0]);
423: }
424: }
425: my $startdateform = &Apache::lonhtmlcommon::date_setter
426: ('Statistics','startdate_'.$i,$starttime);
427: my $enddateform = &Apache::lonhtmlcommon::date_setter
428: ('Statistics','enddate_'.$i,$endtime);
429: #
430: my $begin_index;
431: my $end_index;
432: my $j;
433: while (++$j < scalar(@$PerformanceData)) {
434: last if (&get_time_from_OR_row($PerformanceData->[$j])
435: > $starttime);
436: }
437: $begin_index = $j;
438: while (++$j < scalar(@$PerformanceData)) {
439: last if (&get_time_from_OR_row($PerformanceData->[$j]) > $endtime);
440: }
441: $end_index = $j;
442: ##
443: my $interval = {
444: begin_index => $begin_index,
445: end_index => $end_index,
446: startdateform => $startdateform,
447: enddateform => $enddateform,
448: };
449: if ($ENV{'form.AnalyzeAs'} eq 'Foils') {
450: $table .= &Foil_Time_Analysis($PerformanceData,$ORdata,$Foils,
451: $interval);
452: } else {
453: $table .= &Concept_Time_Analysis($PerformanceData,$ORdata,
454: $Concepts,$interval);
455: }
456: }
457: #
458: return $table;
459: }
460:
461: sub Foil_Time_Analysis {
462: my ($PerformanceData,$ORdata,$Foils,$interval) = @_;
463: my $analysis_html;
464: my $foilkey = &build_option_index($ORdata);
465: my ($begin_index,$end_index) = ($interval->{'begin_index'},
466: $interval->{'end_index'});
467: my %TimeData;
468: #
469: # Compute the number getting the foils correct or incorrects
470: for (my $j=$begin_index;$j<=$end_index;$j++) {
471: my $row = $PerformanceData->[$j];
472: next if (! defined($row));
473: my %Row = &Process_OR_Row($row);
474: while (my ($foilid,$href) = each(%Row)) {
475: if (! ref($href)) {
476: $TimeData{$foilid} += $href;
477: next;
478: }
479: while (my ($option,$value) = each(%$href)) {
480: $TimeData{$foilid}->{$option}+=$value;
481: }
482: }
483: }
484: my @Plotdata;
485: foreach my $foil (@$Foils) {
486: my $total = $TimeData{$foil}->{'_total'};
487: if ($total == 0) {
488: push(@{$Plotdata[0]},0);
489: } else {
490: push(@{$Plotdata[0]},
491: 100 * $TimeData{$foil}->{'_correct'} / $total);
492: }
493: my $total_incorrect = $total - $TimeData{$foil}->{'_correct'};
494: my $optionidx = 1;
495: foreach my $option (@{$ORdata->{'Options'}}) {
496: if ($total_incorrect == 0) {
497: push(@{$Plotdata[$optionidx]},0);
498: } else {
499: push(@{$Plotdata[$optionidx]},
500: 100 * $TimeData{$foil}->{$option} / $total_incorrect);
501: }
502: } continue {
503: $optionidx++;
504: }
505: }
506: #
507: # Create the plot
508: my $count = $end_index-$begin_index;
509: my $title;
510: if ($count == 0) {
511: $title = 'no submissions';
512: } elsif ($count == 1) {
513: $title = 'one submission';
514: } else {
515: $title = $count.' submissions';
516: }
517: my $correctplot = &Apache::loncommon::DrawBarGraph($title,
518: 'Foil Number',
519: 'Percent Correct',
520: 100,
521: $plotcolors,
522: $Plotdata[0]);
523: for (my $j=0; $j< scalar(@{$Plotdata[0]});$j++) {
524: $Plotdata[0]->[$j]=0;
525: }
526: $count = $end_index-$begin_index-$TimeData{'_correct'};
527: if ($count == 0) {
528: $title = 'no submissions';
529: } elsif ($count == 1) {
530: $title = 'one submission';
531: } else {
532: $title = $count.' submissions';
533: }
534: my $incorrectplot = &Apache::loncommon::DrawBarGraph($title,
535: 'Foil Number',
536: 'Incorrect Option Choice',
537: 100,
538: $plotcolors,
539: @Plotdata);
540: $analysis_html.='<tr>'.
541: '<td>'.$correctplot.'</td>'.
542: '<td>'.$incorrectplot.'</td>'.
543: '<td align="left" valign="top">'.$foilkey.'</td>'."</tr>\n";
544: $analysis_html.= '<tr>'.'<td colspan="3">'.
545: '<b>Start Time</b>:'.
546: ' '.$interval->{'startdateform'}.'<br />'.
547: '<b>End Time</b> : '.
548: ' '.$interval->{'enddateform'}.'<br />'.
549: # '<b>Plot Title</b> :'.
550: # (" "x3).$interval->{'titleform'}.
551: '</td>'.
552: "</tr>\n";
553: return $analysis_html;
554: }
555:
556: sub Concept_Time_Analysis {
557: my ($PerformanceData,$ORdata,$Concepts,$interval) = @_;
558: my $analysis_html;
559: ##
560: ## Determine starttime, endtime, startindex, endindex
561: my ($begin_index,$end_index) = ($interval->{'begin_index'},
562: $interval->{'end_index'});
563: my %TimeData;
564: #
565: # Compute the number getting the foils correct or incorrects
566: for (my $j=$begin_index;$j<=$end_index;$j++) {
567: my $row = $PerformanceData->[$j];
568: next if (! defined($row));
569: my %Row = &Process_OR_Row($row);
570: while (my ($foilid,$href) = each(%Row)) {
571: if (! ref($href)) {
572: $TimeData{$foilid} += $href;
573: next;
574: }
575: while (my ($option,$value) = each(%$href)) {
576: $TimeData{$foilid}->{$option}+=$value;
577: }
578: }
579: }
580: #
581: # Put the data in plottable form
582: my @Plotdata;
583: foreach my $concept (@$Concepts) {
584: my ($total,$correct);
585: foreach my $foil (@{$concept->{'foils'}}) {
586: $total += $TimeData{$foil}->{'_total'};
587: $correct += $TimeData{$foil}->{'_correct'};
588: }
589: if ($total == 0) {
590: push(@Plotdata,0);
591: } else {
592: push(@Plotdata,100 * $correct / $total);
593: }
594: }
595: #
596: # Create the plot
597: my $title = ($end_index - $begin_index).' submissions';
598: my $correctplot = &Apache::loncommon::DrawBarGraph($title,
599: 'Concept Number',
600: 'Percent Correct',
601: 100,
602: $plotcolors,
603: \@Plotdata);
604: $analysis_html.='<tr>'.
605: '<td>'.$correctplot.'</td>'.
606: '<td align="left" valign="top">'.
607: '<b>Start Time</b>: '.$interval->{'startdateform'}.'<br />'.
608: '<b>End Time</b> : '.
609: ' '.$interval->{'enddateform'}.'<br />'.
610: # '<b>Plot Title</b> :'.(" "x3).
611: # $interval->{'titleform'}.
612: '</td>'.
613: "</tr>\n";
614: return $analysis_html;
615: }
616:
617: #########################################################
618: #########################################################
619: ##
620: ## Excel output
621: ##
622: #########################################################
623: #########################################################
624: sub prepare_optionresponse_excel_sheet {
625: my ($r,$resource,$PerformanceData,$ORdata) = @_;
626: my $response = '';
627: my (undef,$Foils,$Concepts) = &build_foil_index($ORdata);
628: #
629: # Create excel worksheet
630: my $filename = '/prtspool/'.
631: $ENV{'user.name'}.'_'.$ENV{'user.domain'}.'_'.
632: time.'_'.rand(1000000000).'.xls';
633: my $workbook = Spreadsheet::WriteExcel->new('/home/httpd'.$filename);
634: if (! defined($workbook)) {
635: $r->log_error("Error creating excel spreadsheet $filename: $!");
636: $r->print('<p>'.&mt("Unable to create new Excel file. ".
637: "This error has been logged. ".
638: "Please alert your LON-CAPA administrator").
639: '</p>');
640: return undef;
641: }
642: #
643: $workbook->set_tempdir('/home/httpd/perl/tmp');
644: #
645: # Define some potentially useful formats
646: my $format;
647: $format->{'header'} = $workbook->add_format(bold => 1,
648: bottom => 1,
649: align => 'center');
650: $format->{'bold'} = $workbook->add_format(bold=>1);
651: $format->{'h1'} = $workbook->add_format(bold=>1, size=>18);
652: $format->{'h2'} = $workbook->add_format(bold=>1, size=>16);
653: $format->{'h3'} = $workbook->add_format(bold=>1, size=>14);
654: $format->{'date'} = $workbook->add_format(num_format=>
655: 'mmm d yyyy hh:mm AM/PM');
656: #
657: # Create and populate main worksheets
658: my $problem_data_sheet = $workbook->addworksheet('Problem Data');
659: my $student_data_sheet = $workbook->addworksheet('Student Data');
660: my $response_data_sheet = $workbook->addworksheet('Response Data');
661: foreach my $sheet ($problem_data_sheet,$student_data_sheet,
662: $response_data_sheet) {
663: $sheet->write(0,0,$resource->{'title'},$format->{'h2'});
664: $sheet->write(1,0,$resource->{'src'},$format->{'h3'});
665: }
666: #
667: my $result;
668: $result = &build_problem_data_worksheet($problem_data_sheet,$format,
669: $Concepts,$ORdata);
670: if ($result ne 'okay') {
671: # Do something useful
672: }
673: $result = &build_student_data_worksheet($student_data_sheet,$format);
674: if ($result ne 'okay') {
675: # Do something useful
676: }
677: $result = &build_response_data_worksheet($response_data_sheet,$format,
678: $PerformanceData,$Foils,
679: $ORdata);
680: if ($result ne 'okay') {
681: # Do something useful
682: }
683: $response_data_sheet->activate();
684: #
685: # Close the excel file
686: $workbook->close();
687: #
688: # Write a link to allow them to download it
689: $result .= '<h2>'.&mt('Excel Raw Data Output').'</h2>'.
690: '<p><a href="'.$filename.'">'.
691: &mt('Your Excel spreadsheet.').
692: '</a></p>'."\n";
693: return $result;
694: }
695:
696: sub build_problem_data_worksheet {
697: my ($worksheet,$format,$Concepts,$ORdata) = @_;
698: my $rows_output = 3;
699: my $cols_output = 0;
700: $worksheet->write($rows_output++,0,'Problem Structure',$format->{'h3'});
701: ##
702: ##
703: my @Headers;
704: if (@$Concepts > 1) {
705: @Headers = ("Concept\nNumber",'Concept',"Foil\nNumber",
706: 'Foil Name','Foil Text','Correct value');
707: } else {
708: @Headers = ('Foil Number','FoilName','Foil Text','Correct value');
709: }
710: $worksheet->write_row($rows_output++,0,\@Headers,$format->{'header'});
711: my %Foildata = %{$ORdata->{'Foils'}};
712: my $conceptindex = 1;
713: my $foilindex = 1;
714: foreach my $concept (@$Concepts) {
715: my @FoilsInConcept = @{$concept->{'foils'}};
716: my $firstfoil = shift(@FoilsInConcept);
717: if (@$Concepts > 1) {
718: $worksheet->write_row($rows_output++,0,
719: [$conceptindex,
720: $concept->{'name'},
721: $foilindex++,
722: $Foildata{$firstfoil}->{'name'},
723: $Foildata{$firstfoil}->{'text'},
724: $Foildata{$firstfoil}->{'value'},]);
725: } else {
726: $worksheet->write_row($rows_output++,0,
727: [ $foilindex++,
728: $Foildata{$firstfoil}->{'name'},
729: $Foildata{$firstfoil}->{'text'},
730: $Foildata{$firstfoil}->{'value'},]);
731: }
732: foreach my $foilid (@FoilsInConcept) {
733: if (@$Concepts > 1) {
734: $worksheet->write_row($rows_output++,0,
735: ['',
736: '',
737: $foilindex,
738: $Foildata{$foilid}->{'name'},
739: $Foildata{$foilid}->{'text'},
740: $Foildata{$foilid}->{'value'},]);
741: } else {
742: $worksheet->write_row($rows_output++,0,
743: [$foilindex,
744: $Foildata{$foilid}->{'name'},
745: $Foildata{$foilid}->{'text'},
746: $Foildata{$foilid}->{'value'},]);
747: }
748: } continue {
749: $foilindex++;
750: }
751: } continue {
752: $conceptindex++;
753: }
754: $rows_output++;
755: $rows_output++;
756: ##
757: ## Option data output
758: $worksheet->write($rows_output++,0,'Options',$format->{'header'});
759: foreach my $string (@{$ORdata->{'Options'}}) {
760: $worksheet->write($rows_output++,0,$string);
761: }
762: return 'okay';
763: }
764:
765: sub build_student_data_worksheet {
766: my ($worksheet,$format) = @_;
767: my $rows_output = 3;
768: my $cols_output = 0;
769: $worksheet->write($rows_output++,0,'Student Data',$format->{'h3'});
770: my @Headers = ('full name','username','domain','section',
771: "student\nnumber",'identifier');
772: $worksheet->write_row($rows_output++,0,\@Headers,$format->{'header'});
773: my @Students = @Apache::lonstatistics::Students;
774: my $studentrows = &Apache::loncoursedata::get_student_data(\@Students);
775: my %ids;
776: foreach my $row (@$studentrows) {
777: my ($mysqlid,$student) = @$row;
778: $ids{$student}=$mysqlid;
779: }
780: foreach my $student (@Students) {
781: my $name_domain = $student->{'username'}.':'.$student->{'domain'};
782: $worksheet->write_row($rows_output++,0,
783: [$student->{'fullname'},
784: $student->{'username'},$student->{'domain'},
785: $student->{'section'},$student->{'id'},
786: $ids{$name_domain}]);
787: }
788: return;
789: }
790:
791: sub build_response_data_worksheet {
792: my ($worksheet,$format,$PerformanceData,$Foils,$ORdata)=@_;
793: my $rows_output = 3;
794: my $cols_output = 0;
795: $worksheet->write($rows_output++,0,'Response Data',$format->{'h3'});
796: $worksheet->set_column(1,1,20);
797: $worksheet->set_column(2,2,13);
798: my @Headers = ('identifier','time','award detail','attempt');
799: foreach my $foil (@$Foils) {
800: push (@Headers,$foil.' submission');
801: push (@Headers,$foil.' grading');
802: }
803: $worksheet->write_row($rows_output++,0,\@Headers,$format->{'header'});
804: #
805: foreach my $row (@$PerformanceData) {
806: next if (! defined($row));
807: my ($student,$award,$grading,$submission,$time,$tries) = @$row;
808: my @Foilgrades = split('&',$grading);
809: my @Foilsubs = split('&',$submission);
810: my %ResponseData;
811: for (my $j=0;$j<=$#Foilgrades;$j++) {
812: my ($foilid,$correct) = split('=',$Foilgrades[$j]);
813: my (undef,$submission) = split('=',$Foilsubs[$j]);
814: $submission = &Apache::lonnet::unescape($submission);
815: $ResponseData{$foilid.' submission'}=$submission;
816: $ResponseData{$foilid.' award'}=$correct;
817: }
818: $worksheet->write($rows_output,$cols_output++,$student);
819: $worksheet->write($rows_output,$cols_output++,
820: &calc_serial($time),$format->{'date'});
821: $worksheet->write($rows_output,$cols_output++,$award);
822: $worksheet->write($rows_output,$cols_output++,$tries);
823: foreach my $foilid (@$Foils) {
824: $worksheet->write($rows_output,$cols_output++,
825: $ResponseData{$foilid.' submission'});
826: $worksheet->write($rows_output,$cols_output++,
827: $ResponseData{$foilid.' award'});
828: }
829: $rows_output++;
830: $cols_output = 0;
831: }
832: return;
833: }
834:
835:
836: ##
837: ## The following is copied from datecalc1.pl, part of the
838: ## Spreadsheet::WriteExcel CPAN module.
839: ##
840: ##
841: ######################################################################
842: #
843: # Demonstration of writing date/time cells to Excel spreadsheets,
844: # using UNIX/Perl time as source of date/time.
845: #
846: # Copyright 2000, Andrew Benham, adsb@bigfoot.com
847: #
848: ######################################################################
849: #
850: # UNIX/Perl time is the time since the Epoch (00:00:00 GMT, 1 Jan 1970)
851: # measured in seconds.
852: #
853: # An Excel file can use exactly one of two different date/time systems.
854: # In these systems, a floating point number represents the number of days
855: # (and fractional parts of the day) since a start point. The floating point
856: # number is referred to as a 'serial'.
857: # The two systems ('1900' and '1904') use different starting points:
858: # '1900'; '1.00' is 1 Jan 1900 BUT 1900 is erroneously regarded as
859: # a leap year - see:
860: # http://support.microsoft.com/support/kb/articles/Q181/3/70.asp
861: # for the excuse^H^H^H^H^H^Hreason.
862: # '1904'; '1.00' is 2 Jan 1904.
863: #
864: # The '1904' system is the default for Apple Macs. Windows versions of
865: # Excel have the option to use the '1904' system.
866: #
867: # Note that Visual Basic's "DateSerial" function does NOT erroneously
868: # regard 1900 as a leap year, and thus its serials do not agree with
869: # the 1900 serials of Excel for dates before 1 Mar 1900.
870: #
871: # Note that StarOffice (at least at version 5.2) does NOT erroneously
872: # regard 1900 as a leap year, and thus its serials do not agree with
873: # the 1900 serials of Excel for dates before 1 Mar 1900.
874: #
875: ######################################################################
876: #
877: # Calculation description
878: # =======================
879: #
880: # 1900 system
881: # -----------
882: # Unix time is '0' at 00:00:00 GMT 1 Jan 1970, i.e. 70 years after 1 Jan 1900.
883: # Of those 70 years, 17 (1904,08,12,16,20,24,28,32,36,40,44,48,52,56,60,64,68)
884: # were leap years with an extra day.
885: # Thus there were 17 + 70*365 days = 25567 days between 1 Jan 1900 and
886: # 1 Jan 1970.
887: # In the 1900 system, '1' is 1 Jan 1900, but as 1900 was not a leap year
888: # 1 Jan 1900 should really be '2', so 1 Jan 1970 is '25569'.
889: #
890: # 1904 system
891: # -----------
892: # Unix time is '0' at 00:00:00 GMT 1 Jan 1970, i.e. 66 years after 1 Jan 1904.
893: # Of those 66 years, 17 (1904,08,12,16,20,24,28,32,36,40,44,48,52,56,60,64,68)
894: # were leap years with an extra day.
895: # Thus there were 17 + 66*365 days = 24107 days between 1 Jan 1904 and
896: # 1 Jan 1970.
897: # In the 1904 system, 2 Jan 1904 being '1', 1 Jan 1970 is '24107'.
898: #
899: ######################################################################
900: #
901: # Copyright (c) 2000, Andrew Benham.
902: # This program is free software. It may be used, redistributed and/or
903: # modified under the same terms as Perl itself.
904: #
905: # Andrew Benham, adsb@bigfoot.com
906: # London, United Kingdom
907: # 11 Nov 2000
908: #
909: ######################################################################
910:
911: # Use 1900 date system on all platforms other than Apple Mac (for which
912: # use 1904 date system).
913: my $DATE_SYSTEM = ($^O eq 'MacOS') ? 1 : 0;
914:
915: #-----------------------------------------------------------
916: # calc_serial()
917: #
918: # Called with (up to) 2 parameters.
919: # 1. Unix timestamp. If omitted, uses current time.
920: # 2. GMT flag. Set to '1' to return serial in GMT.
921: # If omitted, returns serial in appropriate timezone.
922: #
923: # Returns date/time serial according to $DATE_SYSTEM selected
924: #-----------------------------------------------------------
925: sub calc_serial {
926: my $time = (defined $_[0]) ? $_[0] : time();
927: my $gmtflag = (defined $_[1]) ? $_[1] : 0;
928:
929: # Divide timestamp by number of seconds in a day.
930: # This gives a date serial with '0' on 1 Jan 1970.
931: my $serial = $time / 86400;
932:
933: # Adjust the date serial by the offset appropriate to the
934: # currently selected system (1900/1904).
935: if ($DATE_SYSTEM == 0) { # use 1900 system
936: $serial += 25569;
937: } else { # use 1904 system
938: $serial += 24107;
939: }
940:
941: unless ($gmtflag) {
942: # Now have a 'raw' serial with the right offset. But this
943: # gives a serial in GMT, which is false unless the timezone
944: # is GMT. We need to adjust the serial by the appropriate
945: # timezone offset.
946: # Calculate the appropriate timezone offset by seeing what
947: # the differences between localtime and gmtime for the given
948: # time are.
949:
950: my @gmtime = gmtime($time);
951: my @ltime = localtime($time);
952:
953: # For the first 7 elements of the two arrays, adjust the
954: # date serial where the elements differ.
955: for (0 .. 6) {
956: my $diff = $ltime[$_] - $gmtime[$_];
957: if ($diff) {
958: $serial += _adjustment($diff,$_);
959: }
960: }
961: }
962:
963: # Perpetuate the error that 1900 was a leap year by decrementing
964: # the serial if we're using the 1900 system and the date is prior to
965: # 1 Mar 1900. This has the effect of making serial value '60'
966: # 29 Feb 1900.
967:
968: # This fix only has any effect if UNIX/Perl time on the platform
969: # can represent 1900. Many can't.
970:
971: unless ($DATE_SYSTEM) {
972: $serial-- if ($serial < 61); # '61' is 1 Mar 1900
973: }
974: return $serial;
975: }
976:
977: sub _adjustment {
978: # Based on the difference in the localtime/gmtime array elements
979: # number, return the adjustment required to the serial.
980:
981: # We only look at some elements of the localtime/gmtime arrays:
982: # seconds unlikely to be different as all known timezones
983: # have an offset of integral multiples of 15 minutes,
984: # but it's easy to do.
985: # minutes will be different for timezone offsets which are
986: # not an exact number of hours.
987: # hours very likely to be different.
988: # weekday will differ when localtime/gmtime difference
989: # straddles midnight.
990: #
991: # Assume that difference between localtime and gmtime is less than
992: # 5 days, then don't have to do maths for day of month, month number,
993: # year number, etc...
994:
995: my ($delta,$element) = @_;
996: my $adjust = 0;
997:
998: if ($element == 0) { # Seconds
999: $adjust = $delta/86400; # 60 * 60 * 24
1000: } elsif ($element == 1) { # Minutes
1001: $adjust = $delta/1440; # 60 * 24
1002: } elsif ($element == 2) { # Hours
1003: $adjust = $delta/24; # 24
1004: } elsif ($element == 6) { # Day of week number
1005: # Catch difference straddling Sat/Sun in either direction
1006: $delta += 7 if ($delta < -4);
1007: $delta -= 7 if ($delta > 4);
1008:
1009: $adjust = $delta;
1010: }
1011: return $adjust;
1012: }
1013:
1014: sub build_foil_index {
1015: my ($ORdata) = @_;
1016: return if (! exists($ORdata->{'Foils'}));
1017: my %Foildata = %{$ORdata->{'Foils'}};
1018: my @Foils = sort(keys(%Foildata));
1019: my %Concepts;
1020: foreach my $foilid (@Foils) {
1021: push(@{$Concepts{$Foildata{$foilid}->{'Concept'}}},
1022: $foilid);
1023: }
1024: undef(@Foils);
1025: # Having gathered the concept information in a hash, we now translate it
1026: # into an array because we need to be consistent about order.
1027: # Also put the foils in order, too.
1028: my $sortfunction = sub {
1029: my %Numbers = (one => 1,
1030: two => 2,
1031: three => 3,
1032: four => 4,
1033: five => 5,
1034: six => 6,
1035: seven => 7,
1036: eight => 8,
1037: nine => 9,
1038: ten => 10,);
1039: my $a1 = lc($a);
1040: my $b1 = lc($b);
1041: if (exists($Numbers{$a})) {
1042: $a1 = $Numbers{$a};
1043: }
1044: if (exists($Numbers{$b})) {
1045: $b1 = $Numbers{$b};
1046: }
1047: $a1 cmp $b1;
1048: };
1049: my @Concepts;
1050: foreach my $concept (sort $sortfunction (keys(%Concepts))) {
1051: push(@Concepts,{ name => $concept,
1052: foils => [@{$Concepts{$concept}}]});
1053: push(@Foils,(@{$Concepts{$concept}}));
1054: }
1055: #
1056: # Build up the table of row labels.
1057: my $table = '<table border="1" >'."\n";
1058: if (@Concepts > 1) {
1059: $table .= '<tr>'.
1060: '<th>'.&mt('Concept Number').'</th>'.
1061: '<th>'.&mt('Concept').'</th>'.
1062: '<th>'.&mt('Foil Number').'</th>'.
1063: '<th>'.&mt('Foil Name').'</th>'.
1064: '<th>'.&mt('Foil Text').'</th>'.
1065: '<th>'.&mt('Correct Value').'</th>'.
1066: "</tr>\n";
1067: } else {
1068: $table .= '<tr>'.
1069: '<th>'.&mt('Foil Number').'</th>'.
1070: '<th>'.&mt('Foil Name').'</th>'.
1071: '<th>'.&mt('Foil Text').'</th>'.
1072: '<th>'.&mt('Correct Value').'</th>'.
1073: "</tr>\n";
1074: }
1075: my $conceptindex = 1;
1076: my $foilindex = 1;
1077: foreach my $concept (@Concepts) {
1078: my @FoilsInConcept = @{$concept->{'foils'}};
1079: my $firstfoil = shift(@FoilsInConcept);
1080: if (@Concepts > 1) {
1081: $table .= '<tr>'.
1082: '<td>'.$conceptindex.'</td>'.
1083: '<td>'.$concept->{'name'}.'</td>'.
1084: '<td>'.$foilindex++.'</td>'.
1085: '<td>'.$Foildata{$firstfoil}->{'name'}.'</td>'.
1086: '<td>'.$Foildata{$firstfoil}->{'text'}.'</td>'.
1087: '<td>'.$Foildata{$firstfoil}->{'value'}.'</td>'.
1088: "</tr>\n";
1089: } else {
1090: $table .= '<tr>'.
1091: '<td>'.$foilindex++.'</td>'.
1092: '<td>'.$Foildata{$firstfoil}->{'name'}.'</td>'.
1093: '<td>'.$Foildata{$firstfoil}->{'text'}.'</td>'.
1094: '<td>'.$Foildata{$firstfoil}->{'value'}.'</td>'.
1095: "</tr>\n";
1096: }
1097: foreach my $foilid (@FoilsInConcept) {
1098: if (@Concepts > 1) {
1099: $table .= '<tr>'.
1100: '<td></td>'.
1101: '<td></td>'.
1102: '<td>'.$foilindex.'</td>'.
1103: '<td>'.$Foildata{$foilid}->{'name'}.'</td>'.
1104: '<td>'.$Foildata{$foilid}->{'text'}.'</td>'.
1105: '<td>'.$Foildata{$foilid}->{'value'}.'</td>'.
1106: "</tr>\n";
1107: } else {
1108: $table .= '<tr>'.
1109: '<td>'.$foilindex.'</td>'.
1110: '<td>'.$Foildata{$foilid}->{'name'}.'</td>'.
1111: '<td>'.$Foildata{$foilid}->{'text'}.'</td>'.
1112: '<td>'.$Foildata{$foilid}->{'value'}.'</td>'.
1113: "</tr>\n";
1114: }
1115: } continue {
1116: $foilindex++;
1117: }
1118: } continue {
1119: $conceptindex++;
1120: }
1121: $table .= "</table>\n";
1122: #
1123: # Build option index with color stuff
1124: return ($table,\@Foils,\@Concepts);
1125: }
1126:
1127: sub build_option_index {
1128: my ($ORdata)= @_;
1129: my $table = "<table>\n";
1130: my $optionindex = 0;
1131: my @Rows;
1132: foreach my $option (&mt('correct option chosen'),@{$ORdata->{'Options'}}) {
1133: push (@Rows,
1134: '<tr>'.
1135: '<td bgcolor="'.$plotcolors->[$optionindex++].'">'.
1136: (' 'x4).'</td>'.
1137: '<td>'.$option.'</td>'.
1138: "</tr>\n");
1139: }
1140: shift(@Rows); # Throw away 'correct option chosen' color
1141: $table .= join('',reverse(@Rows));
1142: $table .= "</table>\n";
1143: }
1144:
1145: #########################################################
1146: #########################################################
1147: ##
1148: ## Generic Interface Routines
1149: ##
1150: #########################################################
1151: #########################################################
1152: sub CreateInterface {
1153: ##
1154: ## Environment variable initialization
1155: if (! exists$ENV{'form.AnalyzeOver'}) {
1156: $ENV{'form.AnalyzeOver'} = 'Tries';
1157: }
1158: ##
1159: ## Build the menu
1160: my $Str = '';
1161: $Str .= '<table cellspacing="5">'."\n";
1162: $Str .= '<tr>';
1163: $Str .= '<td align="center"><b>'.&mt('Sections').'</b></td>';
1164: $Str .= '<td align="center"><b>'.&mt('Enrollment Status').'</b></td>';
1165: # $Str .= '<td align="center"><b>'.&mt('Sequences and Folders').'</b></td>';
1166: $Str .= '<td align="center"> </td>';
1167: $Str .= '</tr>'."\n";
1168: ##
1169: ##
1170: $Str .= '<tr><td align="center">'."\n";
1171: $Str .= &Apache::lonstatistics::SectionSelect('Section','multiple',5);
1172: $Str .= '</td>';
1173: #
1174: $Str .= '<td align="center">';
1175: $Str .= &Apache::lonhtmlcommon::StatusOptions(undef,undef,5);
1176: $Str .= '</td>';
1177: #
1178: # $Str .= '<td align="center">';
1179: my $only_seq_with_assessments = sub {
1180: my $s=shift;
1181: if ($s->{'num_assess'} < 1) {
1182: return 0;
1183: } else {
1184: return 1;
1185: }
1186: };
1187: &Apache::lonstatistics::MapSelect('Maps','multiple,all',5,
1188: $only_seq_with_assessments);
1189: ##
1190: ##
1191: $Str .= '<td>';
1192: { # These braces are here to organize the code, not scope it.
1193: {
1194: $Str .= '<nobr>'.&mt('Analyze Over ');
1195: $Str .='<select name="AnalyzeOver" >';
1196: $Str .= '<option value="Tries" ';
1197: if (! exists($ENV{'form.AnalyzeOver'}) ||
1198: $ENV{'form.AnalyzeOver'} eq 'Tries'){
1199: # Default to Tries
1200: $Str .= ' selected ';
1201: }
1202: $Str .= '>'.&mt('Tries').'</option>';
1203: $Str .= '<option value="Time" ';
1204: $Str .= ' selected ' if ($ENV{'form.AnalyzeOver'} eq 'Time');
1205: $Str .= '>'.&mt('Time').'</option>';
1206: $Str .= '</select></nobr><br />';
1207: }
1208: {
1209: $Str .= '<nobr>'.&mt('Analyze as ');
1210: $Str .='<select name="AnalyzeAs" >';
1211: $Str .= '<option value="Concepts" ';
1212: if (! exists($ENV{'form.AnalyzeAs'}) ||
1213: $ENV{'form.AnalyzeAs'} eq 'Concepts'){
1214: # Default to Concepts
1215: $Str .= ' selected ';
1216: }
1217: $Str .= '>'.&mt('Concepts').'</option>';
1218: $Str .= '<option value="Foils" ';
1219: $Str .= ' selected ' if ($ENV{'form.AnalyzeAs'} eq 'Foils');
1220: $Str .= '>'.&mt('Foils').'</option>';
1221: $Str .= '</select></nobr><br />';
1222: }
1223: {
1224: $Str .= '<br /><nobr>'.&mt('Number of Plots:');
1225: $Str .= '<select name="NumPlots">';
1226: if (! exists($ENV{'form.NumPlots'})
1227: || $ENV{'form.NumPlots'} < 1
1228: || $ENV{'form.NumPlots'} > 20) {
1229: $ENV{'form.NumPlots'} = 5;
1230: }
1231: foreach my $i (1,2,3,4,5,6,7,8,10,15,20) {
1232: $Str .= '<option value="'.$i.'" ';
1233: if ($ENV{'form.NumPlots'} == $i) { $Str.=' selected '; }
1234: $Str .= '>'.$i.'</option>';
1235: }
1236: $Str .= '</select></nobr>';
1237: }
1238: }
1239: $Str .= '</td>';
1240: ##
1241: ##
1242: $Str .= '</tr>'."\n";
1243: $Str .= '</table>'."\n";
1244: return $Str;
1245: }
1246:
1247: sub ProblemSelector {
1248: my $Str;
1249: $Str = "\n<table>\n";
1250: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
1251: next if ($seq->{'num_assess'}<1);
1252: my $seq_str = '';
1253: foreach my $res (@{$seq->{'contents'}}) {
1254: next if ($res->{'type'} ne 'assessment');
1255: foreach my $part (@{$res->{'parts'}}) {
1256: my $partdata = $res->{'partdata'}->{$part};
1257: if (! exists($partdata->{'option'}) ||
1258: $partdata->{'option'} == 0) {
1259: next;
1260: }
1261: for (my $i=0;$i<scalar(@{$partdata->{'ResponseTypes'}});$i++){
1262: my $respid = $partdata->{'ResponseIds'}->[$i];
1263: my $resptype = $partdata->{'ResponseTypes'}->[$i];
1264: if ($resptype eq 'option') {
1265: my $value = &Apache::lonnet::escape($res->{'symb'}.':'.$part.':'.$respid);
1266: my $checked = '';
1267: if ($ENV{'form.problemchoice'} eq $value) {
1268: $checked = 'checked ';
1269: }
1270: $seq_str .= '<tr><td>'.
1271: '<input type="radio" name="problemchoice" value="'.$value.'" '.$checked.'/>'.
1272: '</td><td>'.
1273: '<a href="'.$res->{'src'}.'">'.$res->{'title'}.'</a> ';
1274: if ($partdata->{'option'} > 1) {
1275: $seq_str .= &mt('response').' '.$respid;
1276: }
1277: $seq_str .= "</td></tr>\n";
1278: }
1279: }
1280: }
1281: }
1282: if ($seq_str ne '') {
1283: $Str .= '<tr><td> </td><td><b>'.$seq->{'title'}.'</b></td>'.
1284: "</tr>\n".$seq_str;
1285: }
1286: }
1287: $Str .= "</table>\n";
1288: return $Str;
1289: }
1290:
1291: #########################################################
1292: #########################################################
1293: ##
1294: ## Misc functions
1295: ##
1296: #########################################################
1297: #########################################################
1298: sub get_problem_symb {
1299: my $problemstring = shift();
1300: my ($symb,$partid,$resid) = ($problemstring=~ /^(.*):([^:]*):([^:]*)$/);
1301: return ($symb,$partid,$resid);
1302: }
1303:
1304: sub get_resource_from_symb {
1305: my ($symb) = @_;
1306: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
1307: foreach my $res (@{$seq->{'contents'}}) {
1308: if ($res->{'symb'} eq $symb) {
1309: return $res;
1310: }
1311: }
1312: }
1313: return undef;
1314: }
1315:
1316: sub get_time_from_OR_row {
1317: my ($row) = @_;
1318: if (ref($row)) {
1319: return $row->[4];
1320: }
1321: return undef;
1322: }
1323:
1324: sub get_tries_from_OR_row {
1325: my ($row) = @_;
1326: if (ref($row)) {
1327: return $row->[5];
1328: }
1329: return undef;
1330: }
1331:
1332: sub Process_OR_Row {
1333: my ($row) = @_;
1334: my %RowData;
1335: my ($student_id,$award,$grading,$submission,$time,$tries) = @$row;
1336: return undef if ($award eq 'MISSING_ANSWER');
1337: if ($award =~ /(APPROX_ANS|EXACT_ANS)/) {
1338: $RowData{'_correct'} = 1;
1339: }
1340: $RowData{'_total'} = 1;
1341: my @Foilgrades = split('&',$grading);
1342: my @Foilsubs = split('&',$submission);
1343: for (my $j=0;$j<=$#Foilgrades;$j++) {
1344: my ($foilid,$correct) = split('=',$Foilgrades[$j]);
1345: my (undef,$submission) = split('=',$Foilsubs[$j]);
1346: if ($correct) {
1347: $RowData{$foilid}->{'_correct'}++;
1348: } else {
1349: $submission = &Apache::lonnet::unescape($submission);
1350: $RowData{$foilid}->{$submission}++;
1351: }
1352: $RowData{$foilid}->{'_total'}++;
1353: }
1354: return %RowData;
1355: }
1356:
1357: ##
1358: ## get problem data and put it into a useful data structure.
1359: ## note: we must force each foil and option to not begin or end with
1360: ## spaces as they are stored without such data.
1361: ##
1362: sub get_problem_data {
1363: my ($url) = @_;
1364: my $Answ=&Apache::lonnet::ssi($url,('grade_target' => 'analyze'));
1365: (my $garbage,$Answ)=split(/_HASH_REF__/,$Answ,2);
1366: my %Answer;
1367: %Answer=&Apache::lonnet::str2hash($Answ);
1368: my %Partdata;
1369: foreach my $part (@{$Answer{'parts'}}) {
1370: while (my($key,$value) = each(%Answer)) {
1371: next if ($key !~ /^$part/);
1372: $key =~ s/^$part\.//;
1373: if (ref($value) eq 'ARRAY') {
1374: if ($key eq 'options') {
1375: $Partdata{$part}->{'Options'}=$value;
1376: } elsif ($key eq 'concepts') {
1377: $Partdata{$part}->{'Concepts'}=$value;
1378: } elsif ($key =~ /^concept\.(.*)$/) {
1379: my $concept = $1;
1380: foreach my $foil (@$value) {
1381: $Partdata{$part}->{'Foils'}->{$foil}->{'Concept'}=
1382: $concept;
1383: }
1384: }
1385: } else {
1386: if ($key=~ /^foil\.text\.(.*)$/) {
1387: my $foil = $1;
1388: $Partdata{$part}->{'Foils'}->{$foil}->{'name'}=$foil;
1389: $value =~ s/(\s*$|^\s*)//g;
1390: $Partdata{$part}->{'Foils'}->{$foil}->{'text'}=$value;
1391: } elsif ($key =~ /^foil\.value\.(.*)$/) {
1392: my $foil = $1;
1393: $Partdata{$part}->{'Foils'}->{$foil}->{'value'}=$value;
1394: }
1395: }
1396: }
1397: }
1398: return %Partdata;
1399: }
1400:
1401: 1;
1402:
1403: __END__
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