File:
[LON-CAPA] /
loncom /
interface /
statistics /
lonproblemanalysis.pm
Revision
1.43:
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Mon Oct 20 20:42:39 2003 UTC (20 years, 9 months ago) by
matthew
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MAIN
CVS tags:
HEAD
Excel output for optionresponse analysis.
loncoursedata.pm:
Added &get_student_data.
Modified return values of get_optionresionse_data it now logs errors and
(on error) no longer returns a reference to useless data.
lonproblemanalysis.pm:
Added 'Produce Excel Data Sheet' button. Wording will probably change, as
will page which presents the spreadsheet for download.
Added a bunch of routines associated with excel output, including two
routines 'calc_serial' and '_adjustment' copied from Andrew Benham's
datecalc1.pl, part of the Spreadsheet::WriteExcel CPAN module (GPL).
Read through some of the comments on these to learn a little about date
handling in Excel.
1: # The LearningOnline Network with CAPA
2: #
3: # $Id: lonproblemanalysis.pm,v 1.43 2003/10/20 20:42:39 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:
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 $plotcolors = ['#33ff00',
42: '#0033cc', '#990000', '#aaaa66', '#663399', '#ff9933',
43: '#66ccff', '#ff9999', '#cccc33', '#660000', '#33cc66',
44: ];
45:
46: sub BuildProblemAnalysisPage {
47: my ($r,$c)=@_;
48: $r->print('<h2>'.&mt('Option Response Problem Analysis').'</h2>');
49: $r->print(&CreateInterface());
50: #
51: my @Students = @Apache::lonstatistics::Students;
52: #
53: if (exists($ENV{'form.ClearCache'}) ||
54: exists($ENV{'form.updatecaches'}) ||
55: (exists($ENV{'form.firstanalysis'}) &&
56: $ENV{'form.firstanalysis'} ne 'no')) {
57: &Apache::lonstatistics::Gather_Full_Student_Data($r);
58: }
59: if (! exists($ENV{'form.firstanalysis'})) {
60: $r->print('<input type="hidden" name="firstanalysis" value="yes" />');
61: } else {
62: $r->print('<input type="hidden" name="firstanalysis" value="no" />');
63: }
64: $r->rflush();
65: if (exists($ENV{'form.problemchoice'}) &&
66: ! exists($ENV{'form.SelectAnother'})) {
67: $r->print('<input type="submit" name="ProblemAnalysis" value="'.
68: &mt('Analyze Problem Again').'" />');
69: $r->print(' 'x5);
70: $r->print('<input type="submit" name="ClearCache" value="'.
71: &mt('Clear Caches').'" />');
72: $r->print(' 'x5);
73: $r->print('<input type="submit" name="updatecaches" value="'.
74: &mt('Update Student Data').'" />');
75: $r->print(' 'x5);
76: $r->print('<input type="hidden" name="problemchoice" value="'.
77: $ENV{'form.problemchoice'}.'" />');
78: $r->print('<input type="submit" name="SelectAnother" value="'.
79: &mt('Choose a different resource').'" />');
80: $r->print(' 'x5);
81: $r->print('<input type="submit" name="ExcelOutput" value="'.
82: &mt('Produce Excel Data Sheet').'" />');
83: $r->print(' 'x5);
84: #
85: $r->print('<hr />');
86: #
87: my ($symb,$part,$resid) = &get_problem_symb(
88: &Apache::lonnet::unescape($ENV{'form.problemchoice'})
89: );
90: $r->rflush();
91: #
92: my $resource = &get_resource_from_symb($symb);
93: if (defined($resource)) {
94: $r->print('<h3>'.$resource->{'src'}.'</h3>');
95: my %Data = &get_problem_data($resource->{'src'});
96: my $PerformanceData =
97: &Apache::loncoursedata::get_optionresponse_data
98: (\@Students,$symb,$resid);
99: my $ORdata = $Data{$part.'.'.$resid};
100: if (exists($ENV{'form.ExcelOutput'}) &&
101: defined($PerformanceData)) {
102: my $result = &prepare_excel_sheet($r,$resource,
103: $PerformanceData,$ORdata);
104: $r->print($result);
105: $r->rflush();
106: }
107: ##
108: ## Render the problem
109: my $base;
110: ($base,undef) = ($resource->{'src'} =~ m|(.*/)[^/]*$|);
111: $base = "http://".$ENV{'SERVER_NAME'}.$base;
112: my $rendered_problem =
113: &Apache::lonnet::ssi_body($resource->{'src'});
114: $rendered_problem =~ s/<\s*form\s*/<nop /g;
115: $rendered_problem =~ s|(<\s*/form\s*>)|<\/nop>|g;
116: $r->print('<table bgcolor="ffffff"><tr><td>'.
117: '<base href="'.$base.'" />'.
118: $rendered_problem.
119: '</td></tr></table>');
120: $r->rflush();
121: ##
122: ## Analyze the problem
123: if (defined($PerformanceData) &&
124: ref($PerformanceData) eq 'ARRAY') {
125: if ($ENV{'form.AnalyzeOver'} eq 'Tries') {
126: my $analysis_html = &tries_analysis($r,$PerformanceData,
127: $ORdata);
128: $r->print($analysis_html);
129: $r->rflush();
130: } elsif ($ENV{'form.AnalyzeOver'} eq 'Time') {
131: my $analysis_html = &time_analysis($PerformanceData,
132: $ORdata);
133: $r->print($analysis_html);
134: $r->rflush();
135: } else {
136: $r->print('<h2>'.
137: &mt('The analysis you have selected is '.
138: 'not supported at this time').
139: '</h2>');
140: }
141: } else {
142: $r->print('<h2>'.
143: &mt('There is no student data for this problem.').
144: '</h2>');
145: }
146: } else {
147: $r->print('resource is undefined');
148: }
149: $r->print('<hr />');
150: } else {
151: $r->print('<input type="submit" name="ProblemAnalysis" value="'.
152: &mt('Analyze Problem').'" />');
153: $r->print(' 'x5);
154: $r->print('<h3>'.&mt('Please select a problem to analyze').'</h3>');
155: $r->print(&OptionResponseProblemSelector());
156: }
157: }
158:
159: #########################################################
160: #########################################################
161: ##
162: ## Misc interface routines use by analysis code
163: ##
164: #########################################################
165: #########################################################
166: sub build_foil_index {
167: my ($ORdata) = @_;
168: return if (! exists($ORdata->{'Foils'}));
169: my %Foildata = %{$ORdata->{'Foils'}};
170: my @Foils = sort(keys(%Foildata));
171: my %Concepts;
172: foreach my $foilid (@Foils) {
173: push(@{$Concepts{$Foildata{$foilid}->{'Concept'}}},
174: $foilid);
175: }
176: undef(@Foils);
177: # Having gathered the concept information in a hash, we now translate it
178: # into an array because we need to be consistent about order.
179: # Also put the foils in order, too.
180: my $sortfunction = sub {
181: my %Numbers = (one => 1,
182: two => 2,
183: three => 3,
184: four => 4,
185: five => 5,
186: six => 6,
187: seven => 7,
188: eight => 8,
189: nine => 9,
190: ten => 10,);
191: my $a1 = lc($a);
192: my $b1 = lc($b);
193: if (exists($Numbers{$a})) {
194: $a1 = $Numbers{$a};
195: }
196: if (exists($Numbers{$b})) {
197: $b1 = $Numbers{$b};
198: }
199: $a1 cmp $b1;
200: };
201: my @Concepts;
202: foreach my $concept (sort $sortfunction (keys(%Concepts))) {
203: push(@Concepts,{ name => $concept,
204: foils => [@{$Concepts{$concept}}]});
205: push(@Foils,(@{$Concepts{$concept}}));
206: }
207: #
208: # Build up the table of row labels.
209: my $table = '<table border="1" >'."\n";
210: if (@Concepts > 1) {
211: $table .= '<tr>'.
212: '<th>'.&mt('Concept Number').'</th>'.
213: '<th>'.&mt('Concept').'</th>'.
214: '<th>'.&mt('Foil Number').'</th>'.
215: '<th>'.&mt('Foil Name').'</th>'.
216: '<th>'.&mt('Foil Text').'</th>'.
217: '<th>'.&mt('Correct Value').'</th>'.
218: "</tr>\n";
219: } else {
220: $table .= '<tr>'.
221: '<th>'.&mt('Foil Number').'</th>'.
222: '<th>'.&mt('Foil Name').'</th>'.
223: '<th>'.&mt('Foil Text').'</th>'.
224: '<th>'.&mt('Correct Value').'</th>'.
225: "</tr>\n";
226: }
227: my $conceptindex = 1;
228: my $foilindex = 1;
229: foreach my $concept (@Concepts) {
230: my @FoilsInConcept = @{$concept->{'foils'}};
231: my $firstfoil = shift(@FoilsInConcept);
232: if (@Concepts > 1) {
233: $table .= '<tr>'.
234: '<td>'.$conceptindex.'</td>'.
235: '<td>'.$concept->{'name'}.'</td>'.
236: '<td>'.$foilindex++.'</td>'.
237: '<td>'.$Foildata{$firstfoil}->{'name'}.'</td>'.
238: '<td>'.$Foildata{$firstfoil}->{'text'}.'</td>'.
239: '<td>'.$Foildata{$firstfoil}->{'value'}.'</td>'.
240: "</tr>\n";
241: } else {
242: $table .= '<tr>'.
243: '<td>'.$foilindex++.'</td>'.
244: '<td>'.$Foildata{$firstfoil}->{'name'}.'</td>'.
245: '<td>'.$Foildata{$firstfoil}->{'text'}.'</td>'.
246: '<td>'.$Foildata{$firstfoil}->{'value'}.'</td>'.
247: "</tr>\n";
248: }
249: foreach my $foilid (@FoilsInConcept) {
250: if (@Concepts > 1) {
251: $table .= '<tr>'.
252: '<td></td>'.
253: '<td></td>'.
254: '<td>'.$foilindex.'</td>'.
255: '<td>'.$Foildata{$foilid}->{'name'}.'</td>'.
256: '<td>'.$Foildata{$foilid}->{'text'}.'</td>'.
257: '<td>'.$Foildata{$foilid}->{'value'}.'</td>'.
258: "</tr>\n";
259: } else {
260: $table .= '<tr>'.
261: '<td>'.$foilindex.'</td>'.
262: '<td>'.$Foildata{$foilid}->{'name'}.'</td>'.
263: '<td>'.$Foildata{$foilid}->{'text'}.'</td>'.
264: '<td>'.$Foildata{$foilid}->{'value'}.'</td>'.
265: "</tr>\n";
266: }
267: } continue {
268: $foilindex++;
269: }
270: } continue {
271: $conceptindex++;
272: }
273: $table .= "</table>\n";
274: #
275: # Build option index with color stuff
276: return ($table,\@Foils,\@Concepts);
277: }
278:
279: sub build_option_index {
280: my ($ORdata)= @_;
281: my $table = "<table>\n";
282: my $optionindex = 0;
283: my @Rows;
284: foreach my $option (&mt('correct option chosen'),@{$ORdata->{'Options'}}) {
285: push (@Rows,
286: '<tr>'.
287: '<td bgcolor="'.$plotcolors->[$optionindex++].'">'.
288: (' 'x4).'</td>'.
289: '<td>'.$option.'</td>'.
290: "</tr>\n");
291: }
292: shift(@Rows); # Throw away 'correct option chosen' color
293: $table .= join('',reverse(@Rows));
294: $table .= "</table>\n";
295: }
296:
297: #########################################################
298: #########################################################
299: ##
300: ## Tries Analysis
301: ##
302: #########################################################
303: #########################################################
304: sub tries_analysis {
305: my ($r,$PerformanceData,$ORdata) = @_;
306: my $mintries = 1;
307: my $maxtries = $ENV{'form.NumPlots'};
308: my ($table,$Foils,$Concepts) = &build_foil_index($ORdata);
309: if ((@$Concepts < 2) && ($ENV{'form.AnalyzeAs'} ne 'Foils')) {
310: $table = '<h3>'.
311: &mt('Not enough data for concept analysis. '.
312: 'Performing Foil Analysis').
313: '</h3>'.$table;
314: $ENV{'form.AnalyzeAs'} = 'Foils';
315: }
316: my %ResponseData = &analyze_option_data_by_tries($r,$PerformanceData,
317: $mintries,$maxtries);
318: my $analysis = '';
319: if ($ENV{'form.AnalyzeAs'} eq 'Foils') {
320: $analysis = &Tries_Foil_Analysis($mintries,$maxtries,$Foils,
321: \%ResponseData,$ORdata);
322: } else {
323: $analysis = &Tries_Concept_Analysis($mintries,$maxtries,
324: $Concepts,\%ResponseData,$ORdata);
325: }
326: $table .= $analysis;
327: return $table;
328: }
329:
330: sub Tries_Foil_Analysis {
331: my ($mintries,$maxtries,$Foils,$respdat,$ORdata) = @_;
332: my %ResponseData = %$respdat;
333: #
334: # Compute the data neccessary to make the plots
335: my @PlotData;
336: foreach my $foilid (@$Foils) {
337: for (my $i=$mintries;$i<=$maxtries;$i++) {
338: if ($ResponseData{$foilid}->[$i]->{'_total'} == 0) {
339: push(@{$PlotData[$i]->{'_correct'}},0);
340: } else {
341: push(@{$PlotData[$i]->{'_correct'}},
342: 100*$ResponseData{$foilid}->[$i]->{'_correct'}/
343: $ResponseData{$foilid}->[$i]->{'_total'});
344: }
345: foreach my $option (@{$ORdata->{'Options'}}) {
346: push(@{$PlotData[$i]->{'_total'}},
347: $ResponseData{$foilid}->[$i]->{'_total'});
348: if ($ResponseData{$foilid}->[$i]->{'_total'} == 0) {
349: push (@{$PlotData[$i]->{$option}},0);
350: } else {
351: if ($ResponseData{$foilid}->[$i]->{'_total'} ==
352: $ResponseData{$foilid}->[$i]->{'_correct'}) {
353: push(@{$PlotData[$i]->{$option}},0);
354: } else {
355: push (@{$PlotData[$i]->{$option}},
356: 100 * $ResponseData{$foilid}->[$i]->{$option} /
357: ($ResponseData{$foilid}->[$i]->{'_total'} -
358: $ResponseData{$foilid}->[$i]->{'_correct'}));
359: }
360: }
361: }
362: }
363: }
364: #
365: # Build a table for the plots
366: my $analysis_html = "<table>\n";
367: my $foilkey = &build_option_index($ORdata);
368: for (my $i=$mintries;$i<=$maxtries;$i++) {
369: my $count = $ResponseData{'_total'}->[$i];
370: if ($count == 0) {
371: $count = 'no submissions';
372: } elsif ($count == 1) {
373: $count = '1 submission';
374: } else {
375: $count = $count.' submissions';
376: }
377: my $title = 'Attempt '.$i.', '.$count;
378: my @Datasets;
379: foreach my $option ('_correct',@{$ORdata->{'Options'}}) {
380: next if (! exists($PlotData[$i]->{$option}));
381: push(@Datasets,$PlotData[$i]->{$option});
382: }
383: my $correctgraph = &Apache::loncommon::DrawGraph
384: ($title,'Foil Number','Percent Correct',
385: 100,$plotcolors,$Datasets[0]);
386: $analysis_html.= '<tr><td>'.$correctgraph.'</td>';
387: ##
388: ##
389: for (my $i=0; $i< scalar(@{$Datasets[0]});$i++) {
390: $Datasets[0]->[$i]=0;
391: }
392: $count = $ResponseData{'_total'}->[$i]-$ResponseData{'_correct'}->[$i];
393: if ($count == 0) {
394: $count = 'no submissions';
395: } elsif ($count == 1) {
396: $count = '1 submission';
397: } else {
398: $count = $count.' submissions';
399: }
400: $title = 'Attempt '.$i.', '.$count;
401: my $incorrectgraph = &Apache::loncommon::DrawGraph
402: ($title,'Foil Number','% Option Chosen Incorrectly',
403: 100,$plotcolors,@Datasets);
404: $analysis_html.= '<td>'.$incorrectgraph.'</td>';
405: $analysis_html.= '<td>'.$foilkey."<td></tr>\n";
406: }
407: $analysis_html .= "</table>\n";
408: return $analysis_html;
409: }
410:
411: sub Tries_Concept_Analysis {
412: my ($mintries,$maxtries,$Concepts,$respdat,$ORdata) = @_;
413: my %ResponseData = %$respdat;
414: my $analysis_html = "<table>\n";
415: #
416: # Compute the data neccessary to make the plots
417: my @PlotData;
418: # Concept analysis
419: #
420: # Note: we do not bother with characterizing the students incorrect
421: # answers at the concept level because an incorrect answer for one foil
422: # may be a correct answer for another foil.
423: my %ConceptData;
424: foreach my $concept (@{$Concepts}) {
425: for (my $i=$mintries;$i<=$maxtries;$i++) {
426: #
427: # Gather the per-attempt data
428: my $cdata = $ConceptData{$concept}->[$i];
429: foreach my $foilid (@{$concept->{'foils'}}) {
430: $cdata->{'_correct'} +=
431: $ResponseData{$foilid}->[$i]->{'_correct'};
432: $cdata->{'_total'} +=
433: $ResponseData{$foilid}->[$i]->{'_total'};
434: }
435: push (@{$PlotData[$i]->{'_total'}},$cdata->{'_total'});
436: if ($cdata->{'_total'} == 0) {
437: push (@{$PlotData[$i]->{'_correct'}},0);
438: } else {
439: push (@{$PlotData[$i]->{'_correct'}},
440: 100*$cdata->{'_correct'}/$cdata->{'_total'});
441: }
442: }
443: }
444: # Build a table for the plots
445: for (my $i=$mintries;$i<=$maxtries;$i++) {
446: my $minstu = $PlotData[$i]->{'_total'}->[0];
447: my $maxstu = $PlotData[$i]->{'_total'}->[0];
448: foreach my $count (@{$PlotData[$i]->{'_total'}}) {
449: if ($minstu > $count) {
450: $minstu = $count;
451: }
452: if ($maxstu < $count) {
453: $maxstu = $count;
454: }
455: }
456: $maxstu = 0 if (! defined($maxstu));
457: $minstu = 0 if (! defined($minstu));
458: my $title;
459: my $count = $ResponseData{'_total'}->[$i];
460: if ($count == 0) {
461: $count = 'no submissions';
462: } elsif ($count == 1) {
463: $count = '1 submission';
464: } else {
465: $count = $count.' submissions';
466: }
467: $title = 'Attempt '.$i.', '.$count;
468: my $graphlink = &Apache::loncommon::DrawGraph
469: ($title,'Concept Number','Percent Correct',
470: 100,$plotcolors,$PlotData[$i]->{'_correct'});
471: $analysis_html.= '<tr><td>'.$graphlink."</td></tr>\n";
472: }
473: $analysis_html .= "</table>\n";
474: return $analysis_html;
475: }
476:
477: sub analyze_option_data_by_tries {
478: my ($r,$PerformanceData,$mintries,$maxtries) = @_;
479: my %Trydata;
480: $mintries = 1 if (! defined($mintries) || $mintries < 1);
481: $maxtries = $mintries if (! defined($maxtries) || $maxtries < $mintries);
482: foreach my $row (@$PerformanceData) {
483: next if (! defined($row));
484: my $tries = &get_tries_from_row($row);
485: my %Row = &Process_Row($row);
486: next if (! %Row);
487: while (my ($foilid,$href) = each(%Row)) {
488: if (! ref($href)) {
489: $Trydata{$foilid}->[$tries] += $href;
490: next;
491: }
492: while (my ($option,$value) = each(%$href)) {
493: $Trydata{$foilid}->[$tries]->{$option}+=$value;
494: }
495: }
496: }
497: return %Trydata;
498: }
499:
500: #########################################################
501: #########################################################
502: ##
503: ## Time Analysis
504: ##
505: #########################################################
506: #########################################################
507: sub time_analysis {
508: my ($PerformanceData,$ORdata) = @_;
509: my ($table,$Foils,$Concepts) = &build_foil_index($ORdata);
510: if ((@$Concepts < 2) && ($ENV{'form.AnalyzeAs'} ne 'Foils')) {
511: $table = '<h3>'.
512: &mt('Not enough data for concept analysis. '.
513: 'Performing Foil Analysis').
514: '</h3>'.$table;
515: $ENV{'form.AnalyzeAs'} = 'Foils';
516: }
517: my $num_plots = $ENV{'form.NumPlots'};
518: my $num_data = scalar(@$PerformanceData)-1;
519: my $percent = sprintf('%2f',100/$num_plots);
520: #
521: $table .= "<table>\n";
522: for (my $i=0;$i<$num_plots;$i++) {
523: ##
524: my $starttime = &Apache::lonhtmlcommon::get_date_from_form
525: ('startdate_'.$i);
526: my $endtime = &Apache::lonhtmlcommon::get_date_from_form
527: ('enddate_'.$i);
528: if (! defined($starttime) || ! defined($endtime)) {
529: my $sec_in_day = 86400;
530: my $last_sub_time = &get_time_from_row($PerformanceData->[-1]);
531: my ($sday,$smon,$syear);
532: (undef,undef,undef,$sday,$smon,$syear) =
533: localtime($last_sub_time - $sec_in_day*$i);
534: $starttime = &Time::Local::timelocal(0,0,0,$sday,$smon,$syear);
535: $endtime = $starttime + $sec_in_day;
536: if ($i == ($num_plots -1 )) {
537: $starttime = &get_time_from_row($PerformanceData->[0]);
538: }
539: }
540: my $startdateform = &Apache::lonhtmlcommon::date_setter
541: ('Statistics','startdate_'.$i,$starttime);
542: my $enddateform = &Apache::lonhtmlcommon::date_setter
543: ('Statistics','enddate_'.$i,$endtime);
544: #
545: my $begin_index;
546: my $end_index;
547: my $j;
548: while (++$j < scalar(@$PerformanceData)) {
549: last if (&get_time_from_row($PerformanceData->[$j]) > $starttime);
550: }
551: $begin_index = $j;
552: while (++$j < scalar(@$PerformanceData)) {
553: last if (&get_time_from_row($PerformanceData->[$j]) > $endtime);
554: }
555: $end_index = $j;
556: ##
557: my $interval = {
558: begin_index => $begin_index,
559: end_index => $end_index,
560: startdateform => $startdateform,
561: enddateform => $enddateform,
562: };
563: if ($ENV{'form.AnalyzeAs'} eq 'Foils') {
564: $table .= &Foil_Time_Analysis($PerformanceData,$ORdata,$Foils,
565: $interval);
566: } else {
567: $table .= &Concept_Time_Analysis($PerformanceData,$ORdata,
568: $Concepts,$interval);
569: }
570: }
571: #
572: return $table;
573: }
574:
575: sub Foil_Time_Analysis {
576: my ($PerformanceData,$ORdata,$Foils,$interval) = @_;
577: my $analysis_html;
578: my $foilkey = &build_option_index($ORdata);
579: my ($begin_index,$end_index) = ($interval->{'begin_index'},
580: $interval->{'end_index'});
581: my %TimeData;
582: #
583: # Compute the number getting the foils correct or incorrects
584: for (my $j=$begin_index;$j<=$end_index;$j++) {
585: my $row = $PerformanceData->[$j];
586: next if (! defined($row));
587: my %Row = &Process_Row($row);
588: while (my ($foilid,$href) = each(%Row)) {
589: if (! ref($href)) {
590: $TimeData{$foilid} += $href;
591: next;
592: }
593: while (my ($option,$value) = each(%$href)) {
594: $TimeData{$foilid}->{$option}+=$value;
595: }
596: }
597: }
598: my @Plotdata;
599: foreach my $foil (@$Foils) {
600: my $total = $TimeData{$foil}->{'_total'};
601: if ($total == 0) {
602: push(@{$Plotdata[0]},0);
603: } else {
604: push(@{$Plotdata[0]},
605: 100 * $TimeData{$foil}->{'_correct'} / $total);
606: }
607: my $total_incorrect = $total - $TimeData{$foil}->{'_correct'};
608: my $optionidx = 1;
609: foreach my $option (@{$ORdata->{'Options'}}) {
610: if ($total_incorrect == 0) {
611: push(@{$Plotdata[$optionidx]},0);
612: } else {
613: push(@{$Plotdata[$optionidx]},
614: 100 * $TimeData{$foil}->{$option} / $total_incorrect);
615: }
616: } continue {
617: $optionidx++;
618: }
619: }
620: #
621: # Create the plot
622: my $count = $end_index-$begin_index;
623: my $title;
624: if ($count == 0) {
625: $title = 'no submissions';
626: } elsif ($count == 1) {
627: $title = 'one submission';
628: } else {
629: $title = $count.' submissions';
630: }
631: my $correctplot = &Apache::loncommon::DrawGraph($title,
632: 'Foil Number',
633: 'Percent Correct',
634: 100,
635: $plotcolors,
636: $Plotdata[0]);
637: for (my $j=0; $j< scalar(@{$Plotdata[0]});$j++) {
638: $Plotdata[0]->[$j]=0;
639: }
640: $count = $end_index-$begin_index-$TimeData{'_correct'};
641: if ($count == 0) {
642: $title = 'no submissions';
643: } elsif ($count == 1) {
644: $title = 'one submission';
645: } else {
646: $title = $count.' submissions';
647: }
648: my $incorrectplot = &Apache::loncommon::DrawGraph($title,
649: 'Foil Number',
650: 'Incorrect Option Choice',
651: 100,
652: $plotcolors,
653: @Plotdata);
654: $analysis_html.='<tr>'.
655: '<td>'.$correctplot.'</td>'.
656: '<td>'.$incorrectplot.'</td>'.
657: '<td align="left" valign="top">'.$foilkey.'</td>'."</tr>\n";
658: $analysis_html.= '<tr>'.'<td colspan="3">'.
659: '<b>Start Time</b>:'.
660: ' '.$interval->{'startdateform'}.'<br />'.
661: '<b>End Time</b> : '.
662: ' '.$interval->{'enddateform'}.'<br />'.
663: # '<b>Plot Title</b> :'.
664: # (" "x3).$interval->{'titleform'}.
665: '</td>'.
666: "</tr>\n";
667: return $analysis_html;
668: }
669:
670: sub Concept_Time_Analysis {
671: my ($PerformanceData,$ORdata,$Concepts,$interval) = @_;
672: my $analysis_html;
673: ##
674: ## Determine starttime, endtime, startindex, endindex
675: my ($begin_index,$end_index) = ($interval->{'begin_index'},
676: $interval->{'end_index'});
677: my %TimeData;
678: #
679: # Compute the number getting the foils correct or incorrects
680: for (my $j=$begin_index;$j<=$end_index;$j++) {
681: my $row = $PerformanceData->[$j];
682: next if (! defined($row));
683: my %Row = &Process_Row($row);
684: while (my ($foilid,$href) = each(%Row)) {
685: if (! ref($href)) {
686: $TimeData{$foilid} += $href;
687: next;
688: }
689: while (my ($option,$value) = each(%$href)) {
690: $TimeData{$foilid}->{$option}+=$value;
691: }
692: }
693: }
694: #
695: # Put the data in plottable form
696: my @Plotdata;
697: foreach my $concept (@$Concepts) {
698: my ($total,$correct);
699: foreach my $foil (@{$concept->{'foils'}}) {
700: $total += $TimeData{$foil}->{'_total'};
701: $correct += $TimeData{$foil}->{'_correct'};
702: }
703: if ($total == 0) {
704: push(@Plotdata,0);
705: } else {
706: push(@Plotdata,100 * $correct / $total);
707: }
708: }
709: #
710: # Create the plot
711: my $title = ($end_index - $begin_index).' submissions';
712: my $correctplot = &Apache::loncommon::DrawGraph($title,
713: 'Concept Number',
714: 'Percent Correct',
715: 100,
716: $plotcolors,
717: \@Plotdata);
718: $analysis_html.='<tr>'.
719: '<td>'.$correctplot.'</td>'.
720: '<td align="left" valign="top">'.
721: '<b>Start Time</b>: '.$interval->{'startdateform'}.'<br />'.
722: '<b>End Time</b> : '.
723: ' '.$interval->{'enddateform'}.'<br />'.
724: # '<b>Plot Title</b> :'.(" "x3).
725: # $interval->{'titleform'}.
726: '</td>'.
727: "</tr>\n";
728: return $analysis_html;
729: }
730:
731: #########################################################
732: #########################################################
733: ##
734: ## Excel output
735: ##
736: #########################################################
737: #########################################################
738:
739: sub prepare_excel_sheet {
740: my ($r,$resource,$PerformanceData,$ORdata) = @_;
741: my $response = '<h2>'.&mt('Excel Spreadsheet Creation').'</h2>';
742: my (undef,$Foils,$Concepts) = &build_foil_index($ORdata);
743: #
744: # Create excel worksheet
745: my $filename = '/prtspool/'.
746: $ENV{'user.name'}.'_'.$ENV{'user.domain'}.'_'.
747: time.'_'.rand(1000000000).'.xls';
748: my $workbook = Spreadsheet::WriteExcel->new('/home/httpd'.$filename);
749: if (! defined($workbook)) {
750: $r->log_error("Error creating excel spreadsheet $filename: $!");
751: $r->print('<p>'.&mt("Unable to create new Excel file. ".
752: "This error has been logged. ".
753: "Please alert your LON-CAPA administrator").
754: '</p>');
755: return undef;
756: }
757: #
758: $workbook->set_tempdir('/home/httpd/perl/tmp');
759: #
760: # Define some potentially useful formats
761: my $format;
762: $format->{'header'} = $workbook->add_format(bold => 1,
763: bottom => 1,
764: # text_wrap => 1,
765: align => 'center');
766: $format->{'bold'} = $workbook->add_format(bold=>1);
767: $format->{'h1'} = $workbook->add_format(bold=>1, size=>18);
768: $format->{'h2'} = $workbook->add_format(bold=>1, size=>16);
769: $format->{'h3'} = $workbook->add_format(bold=>1, size=>14);
770: $format->{'date'} = $workbook->add_format(num_format=>
771: 'mmm d yyyy hh:mm AM/PM');
772: #
773: # Create and populate main worksheets
774: my $problem_data_sheet = $workbook->addworksheet('Problem Data');
775: my $student_data_sheet = $workbook->addworksheet('Student Data');
776: my $response_data_sheet = $workbook->addworksheet('Response Data');
777: foreach my $sheet ($problem_data_sheet,$student_data_sheet,
778: $response_data_sheet) {
779: $sheet->write(0,0,$resource->{'title'},$format->{'h2'});
780: $sheet->write(1,0,$resource->{'src'},$format->{'h3'});
781: }
782: #
783: my $result;
784: $result = &build_problem_data_worksheet($problem_data_sheet,$format,
785: $Concepts,$ORdata);
786: if ($result ne 'okay') {
787: # Do something useful
788: }
789: $result = &build_student_data_worksheet($student_data_sheet,$format);
790: if ($result ne 'okay') {
791: # Do something useful
792: }
793: $result = &build_response_data_worksheet($response_data_sheet,$format,
794: $PerformanceData,$Foils,
795: $ORdata);
796: if ($result ne 'okay') {
797: # Do something useful
798: }
799: $response_data_sheet->activate();
800: #
801: # Close the excel file
802: $workbook->close();
803: #
804: # Write a link to allow them to download it
805: $result .= '<br />'.
806: '<a href="'.$filename.'">Your Excel spreadsheet.</a>'."\n";
807: return $result;
808: }
809:
810: sub build_problem_data_worksheet {
811: my ($worksheet,$format,$Concepts,$ORdata) = @_;
812: my $rows_output = 3;
813: my $cols_output = 0;
814: $worksheet->write($rows_output++,0,'Problem Structure',$format->{'h3'});
815: ##
816: ##
817: my @Headers;
818: if (@$Concepts > 1) {
819: @Headers = ("Concept\nNumber",'Concept',"Foil\nNumber",
820: 'Foil Name','Foil Text','Correct value');
821: } else {
822: @Headers = ('Foil Number','FoilName','Foil Text','Correct value');
823: }
824: $worksheet->write_row($rows_output++,0,\@Headers,$format->{'header'});
825: my %Foildata = %{$ORdata->{'Foils'}};
826: my $conceptindex = 1;
827: my $foilindex = 1;
828: foreach my $concept (@$Concepts) {
829: my @FoilsInConcept = @{$concept->{'foils'}};
830: my $firstfoil = shift(@FoilsInConcept);
831: if (@$Concepts > 1) {
832: $worksheet->write_row($rows_output++,0,
833: [$conceptindex,
834: $concept->{'name'},
835: $foilindex++,
836: $Foildata{$firstfoil}->{'name'},
837: $Foildata{$firstfoil}->{'text'},
838: $Foildata{$firstfoil}->{'value'},]);
839: } else {
840: $worksheet->write_row($rows_output++,0,
841: [ $foilindex++,
842: $Foildata{$firstfoil}->{'name'},
843: $Foildata{$firstfoil}->{'text'},
844: $Foildata{$firstfoil}->{'value'},]);
845: }
846: foreach my $foilid (@FoilsInConcept) {
847: if (@$Concepts > 1) {
848: $worksheet->write_row($rows_output++,0,
849: ['',
850: '',
851: $foilindex,
852: $Foildata{$foilid}->{'name'},
853: $Foildata{$foilid}->{'text'},
854: $Foildata{$foilid}->{'value'},]);
855: } else {
856: $worksheet->write_row($rows_output++,0,
857: [$foilindex,
858: $Foildata{$foilid}->{'name'},
859: $Foildata{$foilid}->{'text'},
860: $Foildata{$foilid}->{'value'},]);
861: }
862: } continue {
863: $foilindex++;
864: }
865: } continue {
866: $conceptindex++;
867: }
868: $rows_output++;
869: $rows_output++;
870: ##
871: ## Option data output
872: $worksheet->write($rows_output++,0,'Options',$format->{'header'});
873: foreach my $string (@{$ORdata->{'Options'}}) {
874: $worksheet->write($rows_output++,0,$string);
875: }
876: return 'okay';
877: }
878:
879: sub build_student_data_worksheet {
880: my ($worksheet,$format) = @_;
881: my $rows_output = 3;
882: my $cols_output = 0;
883: $worksheet->write($rows_output++,0,'Student Data',$format->{'h3'});
884: my @Headers = ('full name','username','domain','section',
885: "student\nnumber",'identifier');
886: $worksheet->write_row($rows_output++,0,\@Headers,$format->{'header'});
887: my @Students = @Apache::lonstatistics::Students;
888: my $studentrows = &Apache::loncoursedata::get_student_data(\@Students);
889: my %ids;
890: foreach my $row (@$studentrows) {
891: my ($mysqlid,$student) = @$row;
892: $ids{$student}=$mysqlid;
893: }
894: foreach my $student (@Students) {
895: my $name_domain = $student->{'username'}.':'.$student->{'domain'};
896: $worksheet->write_row($rows_output++,0,
897: [$student->{'fullname'},
898: $student->{'username'},$student->{'domain'},
899: $student->{'section'},$student->{'id'},
900: $ids{$name_domain}]);
901: }
902: return;
903: }
904:
905: sub build_response_data_worksheet {
906: my ($worksheet,$format,$PerformanceData,$Foils,$ORdata)=@_;
907: my $rows_output = 3;
908: my $cols_output = 0;
909: $worksheet->write($rows_output++,0,'Response Data',$format->{'h3'});
910: $worksheet->set_column(1,1,20);
911: $worksheet->set_column(2,2,13);
912: my @Headers = ('identifier','time','award detail','attempt');
913: foreach my $foil (@$Foils) {
914: push (@Headers,$foil.' submission');
915: push (@Headers,$foil.' grading');
916: }
917: $worksheet->write_row($rows_output++,0,\@Headers,$format->{'header'});
918: #
919: foreach my $row (@$PerformanceData) {
920: next if (! defined($row));
921: my ($student,$award,$grading,$submission,$time,$tries) = @$row;
922: my @Foilgrades = split('&',$grading);
923: my @Foilsubs = split('&',$submission);
924: my %ResponseData;
925: for (my $j=0;$j<=$#Foilgrades;$j++) {
926: my ($foilid,$correct) = split('=',$Foilgrades[$j]);
927: my (undef,$submission) = split('=',$Foilsubs[$j]);
928: $submission = &Apache::lonnet::unescape($submission);
929: $ResponseData{$foilid.' submission'}=$submission;
930: $ResponseData{$foilid.' award'}=$correct;
931: }
932: $worksheet->write($rows_output,$cols_output++,$student);
933: $worksheet->write($rows_output,$cols_output++,
934: &calc_serial($time),$format->{'date'});
935: $worksheet->write($rows_output,$cols_output++,$award);
936: $worksheet->write($rows_output,$cols_output++,$tries);
937: foreach my $foilid (@$Foils) {
938: $worksheet->write($rows_output,$cols_output++,
939: $ResponseData{$foilid.' submission'});
940: $worksheet->write($rows_output,$cols_output++,
941: $ResponseData{$foilid.' award'});
942: }
943: $rows_output++;
944: $cols_output = 0;
945: }
946: return;
947: }
948:
949:
950: ##
951: ## The following is copied from datecalc1.pl, part of the
952: ## Spreadsheet::WriteExcel CPAN module.
953: ##
954: ##
955: ######################################################################
956: #
957: # Demonstration of writing date/time cells to Excel spreadsheets,
958: # using UNIX/Perl time as source of date/time.
959: #
960: # Copyright 2000, Andrew Benham, adsb@bigfoot.com
961: #
962: ######################################################################
963: #
964: # UNIX/Perl time is the time since the Epoch (00:00:00 GMT, 1 Jan 1970)
965: # measured in seconds.
966: #
967: # An Excel file can use exactly one of two different date/time systems.
968: # In these systems, a floating point number represents the number of days
969: # (and fractional parts of the day) since a start point. The floating point
970: # number is referred to as a 'serial'.
971: # The two systems ('1900' and '1904') use different starting points:
972: # '1900'; '1.00' is 1 Jan 1900 BUT 1900 is erroneously regarded as
973: # a leap year - see:
974: # http://support.microsoft.com/support/kb/articles/Q181/3/70.asp
975: # for the excuse^H^H^H^H^H^Hreason.
976: # '1904'; '1.00' is 2 Jan 1904.
977: #
978: # The '1904' system is the default for Apple Macs. Windows versions of
979: # Excel have the option to use the '1904' system.
980: #
981: # Note that Visual Basic's "DateSerial" function does NOT erroneously
982: # regard 1900 as a leap year, and thus its serials do not agree with
983: # the 1900 serials of Excel for dates before 1 Mar 1900.
984: #
985: # Note that StarOffice (at least at version 5.2) does NOT erroneously
986: # regard 1900 as a leap year, and thus its serials do not agree with
987: # the 1900 serials of Excel for dates before 1 Mar 1900.
988: #
989: ######################################################################
990: #
991: # Calculation description
992: # =======================
993: #
994: # 1900 system
995: # -----------
996: # Unix time is '0' at 00:00:00 GMT 1 Jan 1970, i.e. 70 years after 1 Jan 1900.
997: # Of those 70 years, 17 (1904,08,12,16,20,24,28,32,36,40,44,48,52,56,60,64,68)
998: # were leap years with an extra day.
999: # Thus there were 17 + 70*365 days = 25567 days between 1 Jan 1900 and
1000: # 1 Jan 1970.
1001: # In the 1900 system, '1' is 1 Jan 1900, but as 1900 was not a leap year
1002: # 1 Jan 1900 should really be '2', so 1 Jan 1970 is '25569'.
1003: #
1004: # 1904 system
1005: # -----------
1006: # Unix time is '0' at 00:00:00 GMT 1 Jan 1970, i.e. 66 years after 1 Jan 1904.
1007: # Of those 66 years, 17 (1904,08,12,16,20,24,28,32,36,40,44,48,52,56,60,64,68)
1008: # were leap years with an extra day.
1009: # Thus there were 17 + 66*365 days = 24107 days between 1 Jan 1904 and
1010: # 1 Jan 1970.
1011: # In the 1904 system, 2 Jan 1904 being '1', 1 Jan 1970 is '24107'.
1012: #
1013: ######################################################################
1014: #
1015: # Copyright (c) 2000, Andrew Benham.
1016: # This program is free software. It may be used, redistributed and/or
1017: # modified under the same terms as Perl itself.
1018: #
1019: # Andrew Benham, adsb@bigfoot.com
1020: # London, United Kingdom
1021: # 11 Nov 2000
1022: #
1023: ######################################################################
1024:
1025: # Use 1900 date system on all platforms other than Apple Mac (for which
1026: # use 1904 date system).
1027: my $DATE_SYSTEM = ($^O eq 'MacOS') ? 1 : 0;
1028:
1029: #-----------------------------------------------------------
1030: # calc_serial()
1031: #
1032: # Called with (up to) 2 parameters.
1033: # 1. Unix timestamp. If omitted, uses current time.
1034: # 2. GMT flag. Set to '1' to return serial in GMT.
1035: # If omitted, returns serial in appropriate timezone.
1036: #
1037: # Returns date/time serial according to $DATE_SYSTEM selected
1038: #-----------------------------------------------------------
1039: sub calc_serial {
1040: my $time = (defined $_[0]) ? $_[0] : time();
1041: my $gmtflag = (defined $_[1]) ? $_[1] : 0;
1042:
1043: # Divide timestamp by number of seconds in a day.
1044: # This gives a date serial with '0' on 1 Jan 1970.
1045: my $serial = $time / 86400;
1046:
1047: # Adjust the date serial by the offset appropriate to the
1048: # currently selected system (1900/1904).
1049: if ($DATE_SYSTEM == 0) { # use 1900 system
1050: $serial += 25569;
1051: } else { # use 1904 system
1052: $serial += 24107;
1053: }
1054:
1055: unless ($gmtflag) {
1056: # Now have a 'raw' serial with the right offset. But this
1057: # gives a serial in GMT, which is false unless the timezone
1058: # is GMT. We need to adjust the serial by the appropriate
1059: # timezone offset.
1060: # Calculate the appropriate timezone offset by seeing what
1061: # the differences between localtime and gmtime for the given
1062: # time are.
1063:
1064: my @gmtime = gmtime($time);
1065: my @ltime = localtime($time);
1066:
1067: # For the first 7 elements of the two arrays, adjust the
1068: # date serial where the elements differ.
1069: for (0 .. 6) {
1070: my $diff = $ltime[$_] - $gmtime[$_];
1071: if ($diff) {
1072: $serial += _adjustment($diff,$_);
1073: }
1074: }
1075: }
1076:
1077: # Perpetuate the error that 1900 was a leap year by decrementing
1078: # the serial if we're using the 1900 system and the date is prior to
1079: # 1 Mar 1900. This has the effect of making serial value '60'
1080: # 29 Feb 1900.
1081:
1082: # This fix only has any effect if UNIX/Perl time on the platform
1083: # can represent 1900. Many can't.
1084:
1085: unless ($DATE_SYSTEM) {
1086: $serial-- if ($serial < 61); # '61' is 1 Mar 1900
1087: }
1088: return $serial;
1089: }
1090:
1091: sub _adjustment {
1092: # Based on the difference in the localtime/gmtime array elements
1093: # number, return the adjustment required to the serial.
1094:
1095: # We only look at some elements of the localtime/gmtime arrays:
1096: # seconds unlikely to be different as all known timezones
1097: # have an offset of integral multiples of 15 minutes,
1098: # but it's easy to do.
1099: # minutes will be different for timezone offsets which are
1100: # not an exact number of hours.
1101: # hours very likely to be different.
1102: # weekday will differ when localtime/gmtime difference
1103: # straddles midnight.
1104: #
1105: # Assume that difference between localtime and gmtime is less than
1106: # 5 days, then don't have to do maths for day of month, month number,
1107: # year number, etc...
1108:
1109: my ($delta,$element) = @_;
1110: my $adjust = 0;
1111:
1112: if ($element == 0) { # Seconds
1113: $adjust = $delta/86400; # 60 * 60 * 24
1114: } elsif ($element == 1) { # Minutes
1115: $adjust = $delta/1440; # 60 * 24
1116: } elsif ($element == 2) { # Hours
1117: $adjust = $delta/24; # 24
1118: } elsif ($element == 6) { # Day of week number
1119: # Catch difference straddling Sat/Sun in either direction
1120: $delta += 7 if ($delta < -4);
1121: $delta -= 7 if ($delta > 4);
1122:
1123: $adjust = $delta;
1124: }
1125: return $adjust;
1126: }
1127:
1128: #########################################################
1129: #########################################################
1130: ##
1131: ## Interface
1132: ##
1133: #########################################################
1134: #########################################################
1135: sub CreateInterface {
1136: ##
1137: ## Environment variable initialization
1138: if (! exists$ENV{'form.AnalyzeOver'}) {
1139: $ENV{'form.AnalyzeOver'} = 'Tries';
1140: }
1141: ##
1142: ## Build the menu
1143: my $Str = '';
1144: $Str .= '<table cellspacing="5">'."\n";
1145: $Str .= '<tr>';
1146: $Str .= '<td align="center"><b>'.&mt('Sections').'</b></td>';
1147: $Str .= '<td align="center"><b>'.&mt('Enrollment Status').'</b></td>';
1148: # $Str .= '<td align="center"><b>'.&mt('Sequences and Folders').'</b></td>';
1149: $Str .= '<td align="center"> </td>';
1150: $Str .= '</tr>'."\n";
1151: ##
1152: ##
1153: $Str .= '<tr><td align="center">'."\n";
1154: $Str .= &Apache::lonstatistics::SectionSelect('Section','multiple',5);
1155: $Str .= '</td>';
1156: #
1157: $Str .= '<td align="center">';
1158: $Str .= &Apache::lonhtmlcommon::StatusOptions(undef,undef,5);
1159: $Str .= '</td>';
1160: #
1161: # $Str .= '<td align="center">';
1162: my $only_seq_with_assessments = sub {
1163: my $s=shift;
1164: if ($s->{'num_assess'} < 1) {
1165: return 0;
1166: } else {
1167: return 1;
1168: }
1169: };
1170: &Apache::lonstatistics::MapSelect('Maps','multiple,all',5,
1171: $only_seq_with_assessments);
1172: ##
1173: ##
1174: $Str .= '<td>';
1175: { # These braces are here to organize the code, not scope it.
1176: {
1177: $Str .= '<nobr>'.&mt('Analyze Over ');
1178: $Str .='<select name="AnalyzeOver" >';
1179: $Str .= '<option value="Tries" ';
1180: if (! exists($ENV{'form.AnalyzeOver'}) ||
1181: $ENV{'form.AnalyzeOver'} eq 'Tries'){
1182: # Default to Tries
1183: $Str .= ' selected ';
1184: }
1185: $Str .= '>'.&mt('Tries').'</option>';
1186: $Str .= '<option value="Time" ';
1187: $Str .= ' selected ' if ($ENV{'form.AnalyzeOver'} eq 'Time');
1188: $Str .= '>'.&mt('Time').'</option>';
1189: $Str .= '</select></nobr><br />';
1190: }
1191: {
1192: $Str .= '<nobr>'.&mt('Analyze as ');
1193: $Str .='<select name="AnalyzeAs" >';
1194: $Str .= '<option value="Concepts" ';
1195: if (! exists($ENV{'form.AnalyzeAs'}) ||
1196: $ENV{'form.AnalyzeAs'} eq 'Concepts'){
1197: # Default to Concepts
1198: $Str .= ' selected ';
1199: }
1200: $Str .= '>'.&mt('Concepts').'</option>';
1201: $Str .= '<option value="Foils" ';
1202: $Str .= ' selected ' if ($ENV{'form.AnalyzeAs'} eq 'Foils');
1203: $Str .= '>'.&mt('Foils').'</option>';
1204: $Str .= '</select></nobr><br />';
1205: }
1206: {
1207: $Str .= '<br /><nobr>'.&mt('Number of Plots:');
1208: $Str .= '<select name="NumPlots">';
1209: if (! exists($ENV{'form.NumPlots'})
1210: || $ENV{'form.NumPlots'} < 1
1211: || $ENV{'form.NumPlots'} > 20) {
1212: $ENV{'form.NumPlots'} = 5;
1213: }
1214: foreach my $i (1,2,3,4,5,6,7,8,10,15,20) {
1215: $Str .= '<option value="'.$i.'" ';
1216: if ($ENV{'form.NumPlots'} == $i) { $Str.=' selected '; }
1217: $Str .= '>'.$i.'</option>';
1218: }
1219: $Str .= '</select></nobr>';
1220: }
1221: }
1222: $Str .= '</td>';
1223: ##
1224: ##
1225: $Str .= '</tr>'."\n";
1226: $Str .= '</table>'."\n";
1227: return $Str;
1228: }
1229:
1230: sub OptionResponseProblemSelector {
1231: my $Str;
1232: $Str = "\n<table>\n";
1233: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
1234: next if ($seq->{'num_assess'}<1);
1235: my $seq_str = '';
1236: foreach my $res (@{$seq->{'contents'}}) {
1237: next if ($res->{'type'} ne 'assessment');
1238: foreach my $part (@{$res->{'parts'}}) {
1239: my $partdata = $res->{'partdata'}->{$part};
1240: if (! exists($partdata->{'option'}) ||
1241: $partdata->{'option'} == 0) {
1242: next;
1243: }
1244: for (my $i=0;$i<scalar(@{$partdata->{'ResponseTypes'}});$i++){
1245: my $respid = $partdata->{'ResponseIds'}->[$i];
1246: my $resptype = $partdata->{'ResponseTypes'}->[$i];
1247: if ($resptype eq 'option') {
1248: my $value = &Apache::lonnet::escape($res->{'symb'}.':'.$part.':'.$respid);
1249: my $checked = '';
1250: if ($ENV{'form.problemchoice'} eq $value) {
1251: $checked = 'checked ';
1252: }
1253: $seq_str .= '<tr><td>'.
1254: '<input type="radio" name="problemchoice" value="'.$value.'" '.$checked.'/>'.
1255: '</td><td>'.
1256: '<a href="'.$res->{'src'}.'">'.$res->{'title'}.'</a> ';
1257: if ($partdata->{'option'} > 1) {
1258: $seq_str .= &mt('response').' '.$respid;
1259: }
1260: $seq_str .= "</td></tr>\n";
1261: }
1262: }
1263: }
1264: }
1265: if ($seq_str ne '') {
1266: $Str .= '<tr><td> </td><td><b>'.$seq->{'title'}.'</b></td>'.
1267: "</tr>\n".$seq_str;
1268: }
1269: }
1270: $Str .= "</table>\n";
1271: return $Str;
1272: }
1273:
1274: #########################################################
1275: #########################################################
1276: ##
1277: ## Misc functions
1278: ##
1279: #########################################################
1280: #########################################################
1281: sub get_problem_symb {
1282: my $problemstring = shift();
1283: my ($symb,$partid,$resid) = ($problemstring=~ /^(.*):([^:]*):([^:]*)$/);
1284: return ($symb,$partid,$resid);
1285: }
1286:
1287: sub get_resource_from_symb {
1288: my ($symb) = @_;
1289: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) {
1290: foreach my $res (@{$seq->{'contents'}}) {
1291: if ($res->{'symb'} eq $symb) {
1292: return $res;
1293: }
1294: }
1295: }
1296: return undef;
1297: }
1298:
1299: sub get_time_from_row {
1300: my ($row) = @_;
1301: if (ref($row)) {
1302: return $row->[3];
1303: }
1304: return undef;
1305: }
1306:
1307: sub get_tries_from_row {
1308: my ($row) = @_;
1309: if (ref($row)) {
1310: return $row->[5];
1311: }
1312: return undef;
1313: }
1314:
1315: sub Process_Row {
1316: my ($row) = @_;
1317: my %RowData;
1318: my ($student_id,$award,$grading,$submission,$time,$tries) = @$row;
1319: return undef if ($award eq 'MISSING_ANSWER');
1320: if ($award =~ /(APPROX_ANS|EXACT_ANS)/) {
1321: $RowData{'_correct'} = 1;
1322: }
1323: $RowData{'_total'} = 1;
1324: my @Foilgrades = split('&',$grading);
1325: my @Foilsubs = split('&',$submission);
1326: for (my $j=0;$j<=$#Foilgrades;$j++) {
1327: my ($foilid,$correct) = split('=',$Foilgrades[$j]);
1328: my (undef,$submission) = split('=',$Foilsubs[$j]);
1329: if ($correct) {
1330: $RowData{$foilid}->{'_correct'}++;
1331: } else {
1332: $submission = &Apache::lonnet::unescape($submission);
1333: $RowData{$foilid}->{$submission}++;
1334: }
1335: $RowData{$foilid}->{'_total'}++;
1336: }
1337: return %RowData;
1338: }
1339:
1340: ##
1341: ## get problem data and put it into a useful data structure.
1342: ## note: we must force each foil and option to not begin or end with
1343: ## spaces as they are stored without such data.
1344: ##
1345: sub get_problem_data {
1346: my ($url) = @_;
1347: my $Answ=&Apache::lonnet::ssi($url,('grade_target' => 'analyze'));
1348: (my $garbage,$Answ)=split(/_HASH_REF__/,$Answ,2);
1349: my %Answer;
1350: %Answer=&Apache::lonnet::str2hash($Answ);
1351: my %Partdata;
1352: foreach my $part (@{$Answer{'parts'}}) {
1353: while (my($key,$value) = each(%Answer)) {
1354: next if ($key !~ /^$part/);
1355: $key =~ s/^$part\.//;
1356: if (ref($value) eq 'ARRAY') {
1357: if ($key eq 'options') {
1358: $Partdata{$part}->{'Options'}=$value;
1359: } elsif ($key eq 'concepts') {
1360: $Partdata{$part}->{'Concepts'}=$value;
1361: } elsif ($key =~ /^concept\.(.*)$/) {
1362: my $concept = $1;
1363: foreach my $foil (@$value) {
1364: $Partdata{$part}->{'Foils'}->{$foil}->{'Concept'}=
1365: $concept;
1366: }
1367: }
1368: } else {
1369: if ($key=~ /^foil\.text\.(.*)$/) {
1370: my $foil = $1;
1371: $Partdata{$part}->{'Foils'}->{$foil}->{'name'}=$foil;
1372: $value =~ s/(\s*$|^\s*)//g;
1373: $Partdata{$part}->{'Foils'}->{$foil}->{'text'}=$value;
1374: } elsif ($key =~ /^foil\.value\.(.*)$/) {
1375: my $foil = $1;
1376: $Partdata{$part}->{'Foils'}->{$foil}->{'value'}=$value;
1377: }
1378: }
1379: }
1380: }
1381: return %Partdata;
1382: }
1383:
1384: 1;
1385:
1386: __END__
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