1: # The LearningOnline Network with CAPA
2: # (Publication Handler
3: #
4: # $Id: lonpercentage.pm,v 1.5 2003/01/11 06:31:26 minaeibi Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: ###
29:
30: package Apache::lonpercentage;
31:
32: use strict;
33: use Apache::lonhtmlcommon;
34: use Apache::loncoursedata;
35: use GDBM_File;
36:
37:
38: sub BuildPercentageGraph {
39: my ($cacheDB, $students, $courseID, $c, $r)=@_;
40:
41: my %cache;
42: unless(tie(%cache,'GDBM_File',$cacheDB,&GDBM_READER(),0640)) {
43: $r->print('Unable to tie database.6');
44: return;
45: }
46:
47: $r->print(&CreateInterface(\%cache));
48: $r->rflush();
49: untie(%cache);
50:
51: my ($result) = &InitializeSelectedStudents($cacheDB, $students,
52: $courseID, $c, $r);
53: if($result ne 'OK' || $c->aborted()) {
54: return;
55: }
56:
57: unless(tie(%cache,'GDBM_File',$cacheDB,&GDBM_READER(),0640)) {
58: $r->print('Unable to tie database.6');
59: return;
60: }
61:
62: my ($Ptr, $percentage) = &GraphData(\%cache, $students,$r);
63: $r->print($Ptr.'<br>');
64:
65: $r->print(&TableData(\%cache, $percentage));
66:
67: untie(%cache);
68:
69: return;
70: }
71:
72: sub CreateInterface {
73: my ($cache)=@_;
74:
75: my $Ptr = '';
76: $Ptr .= '<table border="0" cellspacing="5"><tbody>';
77: $Ptr .= '<tr><td align="right"><b>Select Map</b></td>'."\n";
78: $Ptr .= '<td align="left">';
79: $Ptr .= &Apache::lonhtmlcommon::MapOptions($cache, 'Statistics',
80: 'Statistics');
81: $Ptr .= '</td>'."\n";
82:
83: my $sequence = $cache->{'StatisticsMaps'};
84: if($sequence ne 'All Maps') {
85: $Ptr .= '<td align="right">'."\n";
86: $Ptr .= &Apache::lonhtmlcommon::ProblemOptions($cache,
87: 'Statistics',
88: $sequence,
89: 'Statistics');
90: $Ptr .= '<td>'."\n";
91:
92: my $problem = $cache->{'StatisticsProblemSelect'};
93: if($problem ne 'All Problems') {
94: my $parts = &GetParts($cache, $sequence, $problem);
95: if(scalar(@$parts) > 0) {
96: $Ptr .= '<td align="right">'."\n";
97: $Ptr .= &Apache::lonhtmlcommon::PartOptions($cache,
98: 'Statistics',
99: $parts,
100: 'Statistics');
101: $Ptr .= '</td>'."\n";
102: }
103: }
104: }
105:
106: $Ptr .= '</tr>'."\n";
107:
108: $Ptr .= '<tr><td align="right"><b>Select Sections</b>';
109: $Ptr .= '</td>'."\n";
110: $Ptr .= '<td align="left">'."\n";
111: my @sections = split(':',$cache->{'sectionList'});
112: my @sectionsSelected = split(':',$cache->{'sectionsSelected'});
113: $Ptr .= &Apache::lonhtmlcommon::MultipleSectionSelect(\@sections,
114: \@sectionsSelected,
115: 'Statistics');
116: $Ptr .= '</td></tr>'."\n";
117: $Ptr .= '</table>';
118:
119: return $Ptr;
120: }
121:
122: sub GetParts {
123: my ($cache,$sequence,$problem)=@_;
124: my @parts = ();
125:
126: foreach my $sequenceNumber (split(':',$cache->{'orderedSequences'})) {
127: if($cache->{$sequenceNumber.':title'} eq $sequence) {
128: foreach my $problemNumber (split(':',
129: $cache->{$sequenceNumber.':problems'})) {
130: if($cache->{$problemNumber.':title'} eq $problem) {
131: @parts = split(':',
132: $cache->{$sequenceNumber.':'.$problemNumber.':parts'});
133: }
134: }
135: }
136: }
137:
138: return \@parts;
139: }
140:
141: sub InitializeSelectedStudents {
142: my ($cacheDB, $students, $courseID, $c, $r)=@_;
143: my %cache;
144:
145: unless(tie(%cache,'GDBM_File',$cacheDB,&GDBM_READER(),0640)) {
146: $r->print('Unable to tie database1.1.');
147: return ('ERROR');
148: }
149:
150: # Remove students who don't have the proper section.
151: my @sectionsSelected = split(':',$cache{'sectionsSelected'});
152: for(my $studentIndex=((scalar @$students)-1); $studentIndex>=0;
153: $studentIndex--) {
154: my $value = $cache{$students->[$studentIndex].':section'};
155: my $found = 0;
156: foreach (@sectionsSelected) {
157: if($_ eq 'none') {
158: if($value eq '' || !defined($value) || $value eq ' ') {
159: $found = 1;
160: last;
161: }
162: } else {
163: if($value eq $_) {
164: $found = 1;
165: last;
166: }
167: }
168: }
169: if($found == 0) {
170: splice(@$students, $studentIndex, 1);
171: }
172: }
173:
174: untie(%cache);
175:
176: &Apache::loncoursedata::DownloadStudentCourseDataSeparate($students,
177: 'true',
178: $cacheDB,
179: 'true',
180: 'true',
181: $courseID,
182: $r, $c);
183:
184: return ('OK');
185: }
186:
187: sub GraphData {
188: my ($cache,$students,$r)=@_;
189:
190: my $sequenceSelected = $cache->{'StatisticsMaps'};
191: my $problemSelected = $cache->{'StatisticsProblemSelect'};
192: my $partSelected = $cache->{'StatisticsPartSelect'};
193:
194: my %percentages;
195: my $Ptr = '';
196:
197: foreach(@$students) {
198: my $totalCorrect = 0;
199: my $totalProblems = 0;
200:
201: foreach my $sequence (split(':',$cache->{'orderedSequences'})) {
202: next if($cache->{$sequence.':title'} ne $sequenceSelected &&
203: $sequenceSelected ne 'All Maps');
204: foreach my $problem (split(':',$cache->{$sequence.':problems'})) {
205: next if($cache->{$problem.':title'} ne $problemSelected &&
206: $problemSelected ne 'All Problems' &&
207: $sequenceSelected ne 'All Maps');
208: foreach my $part (split(':',$cache->{$sequence.':'.$problem.
209: ':parts'})) {
210: next if($part ne $partSelected &&
211: $partSelected ne 'All Parts' &&
212: $problemSelected ne 'All Problems' &&
213: $sequenceSelected ne 'All Maps');
214: my $code = $cache->{$_.':'.$problem.':'.$part.':code'};
215: if($code eq '*' || $code eq '+') {
216: $totalCorrect++;
217: $totalProblems++;
218: } elsif($code ne 'x') {
219: $totalProblems++;
220: }
221: }
222: }
223: }
224:
225: my $percent = sprintf("%d", ($totalProblems) ?
226: (($totalCorrect/$totalProblems)*100) : 0);
227: if(defined($percentages{$percent})) {
228: $percentages{$percent} .= ':::'.$_;
229: } else {
230: $percentages{$percent} = $_;
231: }
232: }
233:
234: my @percent = ();
235: my @percentCount = ();
236: my $max = 0;
237: my $pno = 0;
238: foreach my $key (sort NumericSort keys(%percentages)) {
239: push(@percent, $key);
240: my @temp = split(':::', $percentages{$key});
241: my $count = scalar(@temp);
242: if($count > $max) {
243: $max = $count;
244: }
245: push(@percentCount, $count);
246: $pno++;
247: }
248:
249: # $r->print('<br>max='.$max);
250: # $r->print('<br> percentcount='.join(',', @percentCount));
251: # $r->print('<br> percent='.join(',', @percent));
252:
253: my $cId=0;
254: my @data1=();
255: my @data2=();
256: for (my $nIdx=0; $nIdx<$pno; $nIdx++ ) {
257: $data1[$cId]=$percent[$nIdx];
258: $data2[$cId]=$percentCount[$nIdx];
259: my $cr=$percent[$nIdx+1];
260: while ($data1[$cId]<$cr) {
261: $cId++;
262: $data1[$cId]=$cId;
263: $data2[$cId]=0;
264: }
265: }
266:
267: # $r->print('<br> percentcount='.join(',', @data1));
268: # $r->print('<br> percent='.join(',', @data2));
269:
270:
271: my @GData = ('','Percentage','Number_of_Students',$max,101 ,
272: join(',',@data1), join(',', @data2));
273:
274: $Ptr .= '</form>'."\n";
275: $Ptr .= '<IMG src="/cgi-bin/graph.png?'.(join('&', @GData));
276: $Ptr .= '" border="1" />';
277: $Ptr .= '<form>'."\n";
278:
279: return ($Ptr, \%percentages);
280: }
281:
282: sub NumericSort {
283: $a <=> $b;
284: }
285:
286: sub TableData {
287: my($cache,$percentage)=@_;
288: my $Ptr;
289:
290: $Ptr .= '<table border="0"><tr><td bgcolor="#D7D7D7">'."\n";
291: $Ptr .= '<table border="0" cellpadding="3"><tr bgcolor="#e6ffff">'."\n";
292:
293: $Ptr .= '<tr>'."\n";
294: $Ptr .= '<td>% Correct</td>'.
295: '<td>Frequency</td>'.
296: '<td>Students</td>';
297: $Ptr .= '</tr>'."\n";
298:
299: my $alternate=0;
300: foreach (sort NumericSort keys(%$percentage)) {
301:
302: my @temp = split(':::', $percentage->{$_});
303: my $count = scalar(@temp);
304:
305: if($alternate) {
306: $Ptr .= '<tr bgcolor="#ffffe6">';
307: } else {
308: $Ptr .= '<tr bgcolor="#ffffc6">';
309: }
310: $alternate = ($alternate + 1) % 2;
311:
312: $Ptr .= '<td>'.$_.'</td>';
313: $Ptr .= '<td>'.$count.'</td><td>';
314:
315: foreach my $name (sort(split(':::', $percentage->{$_}))) {
316: $Ptr .= '<a href="/adm/statistics?reportSelected=';
317: $Ptr .= &Apache::lonnet::escape('Student Assessment');
318: $Ptr .= '&StudentAssessmentStudent=';
319: $Ptr .= &Apache::lonnet::escape($cache->{$name.':fullname'}).'">';
320: $Ptr .= $cache->{$name.':fullname'};
321: $Ptr .= '</a>,  ';
322: }
323:
324: $Ptr .= '</td></tr>'."\n";
325: }
326:
327: $Ptr .= '</tr>'."\n";
328: $Ptr .= '</table></td></tr></table>'."\n";
329:
330: return $Ptr;
331: }
332:
333: 1;
334: __END__
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