Annotation of loncom/interface/statistics/loncorrectproblemplot.pm, revision 1.6
1.1 matthew 1: # The LearningOnline Network with CAPA
2: #
1.6 ! matthew 3: # $Id: loncorrectproblemplot.pm,v 1.5 2004/02/03 16:28:55 matthew Exp $
1.1 matthew 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::loncorrectproblemplot;
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::lonstathelpers;
37: use Apache::lonlocal;
38:
39: my @SubmitButtons = (
40: { name => 'CreatePlot',
41: text => 'Create Plot' },
42: { name => 'ClearCache',
43: text => 'Clear Caches' },
44: { name => 'updatecaches',
45: text => 'Update Student Data' },
46: );
1.4 matthew 47:
48: #########################################################
49: #########################################################
50:
51: =pod
52:
53: =item &BuildCorrectProblemsPage
54:
55: Entry point from lonstatistics to the correct problems plot page.
56:
57: =cut
58:
59: #########################################################
60: #########################################################
1.1 matthew 61:
62: sub BuildCorrectProblemsPage {
63: my ($r,$c)=@_;
64: #
65: my %Saveable_Parameters = ('Status' => 'scalar',
66: 'Section' => 'array');
67: &Apache::loncommon::store_course_settings('correct_problems_plot',
68: \%Saveable_Parameters);
69: &Apache::loncommon::restore_course_settings('correct_problems_plot',
70: \%Saveable_Parameters);
71: #
72: &Apache::lonstatistics::PrepareClasslist();
73: #
74: $r->print(&CreateInterface());
75: #
76: my @Students = @Apache::lonstatistics::Students;
77: #
78: if (@Students < 1) {
79: $r->print('<h2>'.
80: &mt('There are no students in the sections selected').
81: '</h2>');
82: }
83: #
84: &Apache::loncoursedata::clear_internal_caches();
85: if (exists($ENV{'form.ClearCache'}) ||
86: exists($ENV{'form.updatecaches'}) ||
87: (exists($ENV{'form.firstanalysis'}) &&
88: $ENV{'form.firstanalysis'} ne 'no')) {
89: &Apache::lonstatistics::Gather_Full_Student_Data($r);
90: }
91: if (! exists($ENV{'form.firstanalysis'})) {
92: $r->print('<input type="hidden" name="firstanalysis" value="yes" />');
93: } else {
94: $r->print('<input type="hidden" name="firstanalysis" value="no" />');
95: }
96: foreach my $button (@SubmitButtons) {
97: $r->print('<input type="submit" name="'.$button->{'name'}.'" '.
98: 'value="'.&mt($button->{'text'}).'" />');
99: $r->print(' 'x5);
100: }
101: $r->rflush();
102: #
103: # Determine which problem symbs we are to sum over
104: if (exists($ENV{'form.CreatePlot'})) {
105: my @ProblemSymbs;
106: if ($Apache::lonstatistics::SelectedMaps[0] ne 'all') {
107: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()){
108: foreach my $res (@{$seq->{'contents'}}) {
109: next if ($res->{'type'} ne 'assessment');
110: foreach my $part (@{$res->{'parts'}}) {
111: push(@ProblemSymbs,{symb=>$res->{'symb'},
112: part=>$part});
113: }
114: }
115: }
116: }
117: my $score_data = &Apache::loncoursedata::get_student_scores
118: (\@Apache::lonstatistics::SelectedSections,
119: \@ProblemSymbs,
120: $Apache::lonstatistics::enrollment_status);
121: $r->print(&AnalyzeScoreData($score_data));
122: }
123: return;
124: }
125:
126: #########################################################
127: #########################################################
128:
129: =pod
130:
1.2 matthew 131: =item & AnalyzeScoreData($score_data)
132:
133: Analyze the result of &Apache::loncoursedata::get_student_scores() and
134: return html with a plot of the data and a table of the values and bins.
1.1 matthew 135:
136: =cut
137:
138: #########################################################
139: #########################################################
140: sub AnalyzeScoreData {
141: my ($score_data) = @_;
142: #
143: # Basic check first
144: if (@$score_data < 1) {
145: return '<h2>There is no data to plot</h2>';
146: }
147: #
148: # Determine which bins to use
149: my $lowest = $score_data->[0]->[0];
150: $lowest = 0;
151: my $highest = $score_data->[-1]->[0];
152: my $binsize = 1;
153: if ($highest > 50) { $binsize = 2; }
154: if ($highest > 100) { $binsize = 5; }
155: if ($highest > 200) { $binsize = 10; }
156: if ($highest > 500) { $binsize = 20; }
157: if ($highest > 1000) { $binsize = 50; }
158: if ($highest > 2000) { $binsize = 100; }
159: #
160: # Get the data into the bins (destroying $score_data in the process)
161: my @Bins = &bin_data($score_data,$binsize,$lowest,$highest);
162: my @Xdata; my @Ydata; my $max;
163: my $Str = '<table border="1">'."\n".'<tr><th>Range</th><th>Count</th></tr>'."\n";
164: while (my $bin = shift(@Bins)) {
165: push (@Xdata,$bin->{'start'});
166: push (@Ydata,$bin->{'count'});
167: if ($bin->{'count'} > $max) {
168: $max = $bin->{'count'};
169: }
170: $Str.= '<tr><td>'.$bin->{'start'}.' - '.$bin->{'end'}.'</td>'.
171: '<td>'.$bin->{'count'}.'</td></tr>'."\n";
172: }
1.5 matthew 173: # scale max to an integer.
174: $max = 5*(int($max/5)+1);
175: my $title = 'Correct Problems Plot';
1.1 matthew 176: $Str .= "</table><br />\n";
177: $Str = "<br />\n".&Apache::loncommon::DrawBarGraph($title,
178: 'Num Correct Problems',
179: 'Number of students',
180: $max,
181: undef, # colors
182: \@Xdata,
183: \@Ydata).
184: "\n<br />\n".$Str;
185: return $Str;
186: }
187:
188:
189: #########################################################
190: #########################################################
191:
192: =pod
193:
194: =item &bin_data($data,$binsize,$startbin,$endbin)
195:
196: Note: This routine destroys the array of data passed to it.
197:
198: Inputs: $data: array reference - the contents of @$data must
199: be arrays with x and y data. $data = [ [x1,y1],[x2,y2],...];
200: $binsize: Width of bins to put data in
201: $startbin: the starting bin.
202: $endbin: the ending bin.
203: Returns: Array of Bins. Each bin is a hash reference with the following
204: keys: 'start', 'count', and 'end'.
205:
206: =cut
207:
208: #########################################################
209: #########################################################
210: sub bin_data {
211: my ($data,$binsize,$startbin,$endbin)=@_;
212: return () if (! defined($data) || ref($data) ne 'ARRAY');
213: #
214: # Determine bin geometry
215: my $binstart = $startbin;
216: my $binend = $startbin+$binsize;
217: # put the data into bins
218: my @Bins;
219: my $count=0;
220: my $idx=0;
221: while ($idx < scalar(@$data) && ($binend-$endbin)<$binsize) {
222: my $dataset = $data->[$idx++];
223: my ($x,$y) = @{$dataset};
224: while ($x > $binend) {
225: # store the old data
226: push (@Bins,{ start => $binstart,
227: count => $count,
228: end => $binend });
229: # start counting again
230: $binstart += $binsize;
231: $binend += $binsize;
232: $count = 0;
233: }
234: $count+=$y;
235: }
236: return @Bins;
237: }
238:
239: #########################################################
240: #########################################################
241:
242: =pod
243:
1.2 matthew 244: =item &CreateInterface
245:
246: Inputs: none.
247:
248: Returns: HTML for the correct problems plot interface.
1.1 matthew 249:
250: =cut
251:
252: #########################################################
253: #########################################################
254: sub CreateInterface {
255: ##
256: ## Environment variable initialization
257: my $Str;
1.6 ! matthew 258: $Str .= &Apache::lonhtmlcommon::breadcrumbs(undef,'Correct Problems Plot');
1.1 matthew 259: $Str .= '<table cellspacing="5">'."\n";
260: $Str .= '<tr>';
261: $Str .= '<td align="center"><b>'.&mt('Sections').'</b></td>';
262: $Str .= '<td align="center"><b>'.&mt('Enrollment Status').'</b></td>';
263: $Str .= '<td align="center"><b>'.&mt('Sequences and Folders').'</b></td>';
264: $Str .= '</tr>'."\n";
265: ##
266: ##
267: $Str .= '<tr><td align="center">'."\n";
268: $Str .= &Apache::lonstatistics::SectionSelect('Section','multiple',5);
269: $Str .= '</td>';
270: #
271: $Str .= '<td align="center">';
272: $Str .= &Apache::lonhtmlcommon::StatusOptions(undef,undef,5);
273: $Str .= '</td><td>'."\n";
274: #
275: my $only_seq_with_assessments = sub {
276: my $s=shift;
277: if ($s->{'num_assess'} < 1) {
278: return 0;
279: } else {
280: return 1;
281: }
282: };
283: $Str .= &Apache::lonstatistics::MapSelect('Maps','multiple,all',5,
284: $only_seq_with_assessments);
285: $Str .= '</td><td>'."\n";
286: ##
287: $Str .= '</tr>'."\n";
288: $Str .= '</table>'."\n";
289: return $Str;
290: }
291:
292: 1;
293:
294: __END__
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/back.gif){kind=icon}
Return to loncorrectproblemplot.pm CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [LON-CAPA] / loncom / interface / statistics