Annotation of loncom/interface/statistics/loncorrectproblemplot.pm, revision 1.13
1.1 matthew 1: # The LearningOnline Network with CAPA
2: #
1.13 ! matthew 3: # $Id: loncorrectproblemplot.pm,v 1.12 2004/10/06 14:21:57 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: );
1.4 matthew 43:
44: #########################################################
45: #########################################################
46:
47: =pod
48:
49: =item &BuildCorrectProblemsPage
50:
51: Entry point from lonstatistics to the correct problems plot page.
52:
53: =cut
54:
55: #########################################################
56: #########################################################
1.1 matthew 57:
58: sub BuildCorrectProblemsPage {
59: my ($r,$c)=@_;
60: #
61: my %Saveable_Parameters = ('Status' => 'scalar',
62: 'Section' => 'array');
63: &Apache::loncommon::store_course_settings('correct_problems_plot',
64: \%Saveable_Parameters);
65: &Apache::loncommon::restore_course_settings('correct_problems_plot',
66: \%Saveable_Parameters);
67: #
68: &Apache::lonstatistics::PrepareClasslist();
69: #
70: $r->print(&CreateInterface());
71: #
72: my @Students = @Apache::lonstatistics::Students;
73: #
74: if (@Students < 1) {
75: $r->print('<h2>'.
76: &mt('There are no students in the sections selected').
77: '</h2>');
78: }
79: #
1.11 matthew 80: my @CacheButtonHTML =
81: &Apache::lonstathelpers::manage_caches($r,'Statistics','stats_status');
1.1 matthew 82: foreach my $button (@SubmitButtons) {
83: $r->print('<input type="submit" name="'.$button->{'name'}.'" '.
84: 'value="'.&mt($button->{'text'}).'" />');
85: $r->print(' 'x5);
86: }
1.11 matthew 87: foreach my $html (@CacheButtonHTML) {
88: $r->print($html.(' 'x5));
89: }
1.1 matthew 90: $r->rflush();
91: #
92: # Determine which problem symbs we are to sum over
93: if (exists($ENV{'form.CreatePlot'})) {
94: my @ProblemSymbs;
1.9 matthew 95: my $total_parts = 0;
96: my $title = '';
1.1 matthew 97: if ($Apache::lonstatistics::SelectedMaps[0] ne 'all') {
98: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()){
1.9 matthew 99: if ($title eq '') {
100: $title = $seq->{'title'};
101: } else {
102: $title = 'Multiple Sequences';
103: }
1.1 matthew 104: foreach my $res (@{$seq->{'contents'}}) {
105: next if ($res->{'type'} ne 'assessment');
106: foreach my $part (@{$res->{'parts'}}) {
1.9 matthew 107: $total_parts++;
1.1 matthew 108: push(@ProblemSymbs,{symb=>$res->{'symb'},
109: part=>$part});
110: }
111: }
112: }
1.13 ! matthew 113: } else {
! 114: $title = "All Problems";
! 115: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()){
! 116: foreach my $res (@{$seq->{'contents'}}) {
! 117: next if ($res->{'type'} ne 'assessment');
! 118: $total_parts += scalar(@{$res->{'parts'}});
! 119: }
! 120: }
1.1 matthew 121: }
1.9 matthew 122: my ($starttime,$endtime) = &Apache::lonstathelpers::get_time_limits();
1.10 matthew 123: if (defined($starttime) || defined($endtime)) {
124: # Inform the user what the time limits on the data are.
125: $r->print(&mt('Statistics on submissions from [_1] to [_2]',
126: &Apache::lonlocal::locallocaltime($starttime),
127: &Apache::lonlocal::locallocaltime($endtime)));
128: }
1.1 matthew 129: my $score_data = &Apache::loncoursedata::get_student_scores
130: (\@Apache::lonstatistics::SelectedSections,
131: \@ProblemSymbs,
1.9 matthew 132: $Apache::lonstatistics::enrollment_status,undef,
133: $starttime,$endtime);
134: $r->print(&AnalyzeScoreData($score_data,$title,$total_parts));
1.11 matthew 135: } else {
136: $r->print('<h3>'.&mt('Make a sequence selection from the "Sequences and Folders" menu and hit "Create Plot" to begin').'</h3>');
1.1 matthew 137: }
138: return;
139: }
140:
141: #########################################################
142: #########################################################
143:
144: =pod
145:
1.2 matthew 146: =item & AnalyzeScoreData($score_data)
147:
148: Analyze the result of &Apache::loncoursedata::get_student_scores() and
149: return html with a plot of the data and a table of the values and bins.
1.1 matthew 150:
151: =cut
152:
153: #########################################################
154: #########################################################
155: sub AnalyzeScoreData {
1.9 matthew 156: my ($score_data,$title,$total_parts) = @_;
1.1 matthew 157: #
158: # Basic check first
1.12 matthew 159: if (ref($score_data) ne 'ARRAY' || @$score_data < 1) {
160: return '<h2>'.&mt('There is no data to plot').'</h2>';
1.1 matthew 161: }
162: #
163: # Determine which bins to use
164: my $lowest = $score_data->[0]->[0];
165: $lowest = 0;
166: my $highest = $score_data->[-1]->[0];
1.9 matthew 167: &Apache::lonnet::logthis('highest = '.$highest);
1.1 matthew 168: my $binsize = 1;
169: if ($highest > 50) { $binsize = 2; }
170: if ($highest > 100) { $binsize = 5; }
171: if ($highest > 200) { $binsize = 10; }
172: if ($highest > 500) { $binsize = 20; }
173: if ($highest > 1000) { $binsize = 50; }
174: if ($highest > 2000) { $binsize = 100; }
175: #
176: # Get the data into the bins (destroying $score_data in the process)
177: my @Bins = &bin_data($score_data,$binsize,$lowest,$highest);
178: my @Xdata; my @Ydata; my $max;
1.11 matthew 179: my $Str =
180: '<table border="1">'."\n".'<tr><th>Range</th><th>Count</th></tr>'."\n";
1.9 matthew 181: my $sum = 0;
1.1 matthew 182: while (my $bin = shift(@Bins)) {
183: push (@Xdata,$bin->{'start'});
184: push (@Ydata,$bin->{'count'});
1.9 matthew 185: $sum += $bin->{'count'};
1.1 matthew 186: if ($bin->{'count'} > $max) {
187: $max = $bin->{'count'};
188: }
189: $Str.= '<tr><td>'.$bin->{'start'}.' - '.$bin->{'end'}.'</td>'.
190: '<td>'.$bin->{'count'}.'</td></tr>'."\n";
191: }
1.5 matthew 192: # scale max to an integer.
193: $max = 5*(int($max/5)+1);
1.1 matthew 194: $Str .= "</table><br />\n";
1.9 matthew 195: $title = &HTML::Entities::decode($title);
1.11 matthew 196: $Str = "\n<p>".&Apache::loncommon::DrawBarGraph($title.' N = '.$sum,
1.13 ! matthew 197: 'Correct Problems (max possible = '.$total_parts.')',
1.1 matthew 198: 'Number of students',
199: $max,
200: undef, # colors
201: \@Xdata,
202: \@Ydata).
203: "\n<br />\n".$Str;
1.11 matthew 204: $Str .= '</p>'."\n";
1.1 matthew 205: return $Str;
206: }
207:
208:
209: #########################################################
210: #########################################################
211:
212: =pod
213:
214: =item &bin_data($data,$binsize,$startbin,$endbin)
215:
216: Note: This routine destroys the array of data passed to it.
217:
218: Inputs: $data: array reference - the contents of @$data must
219: be arrays with x and y data. $data = [ [x1,y1],[x2,y2],...];
220: $binsize: Width of bins to put data in
221: $startbin: the starting bin.
222: $endbin: the ending bin.
223: Returns: Array of Bins. Each bin is a hash reference with the following
224: keys: 'start', 'count', and 'end'.
225:
226: =cut
227:
228: #########################################################
229: #########################################################
230: sub bin_data {
231: my ($data,$binsize,$startbin,$endbin)=@_;
232: return () if (! defined($data) || ref($data) ne 'ARRAY');
233: #
234: # Determine bin geometry
235: my $binstart = $startbin;
236: my $binend = $startbin+$binsize;
237: # put the data into bins
238: my @Bins;
239: my $count=0;
240: my $idx=0;
1.9 matthew 241: while ($idx < scalar(@$data) && ($endbin-$binend + $binsize)>0) {
1.1 matthew 242: my $dataset = $data->[$idx++];
243: my ($x,$y) = @{$dataset};
1.9 matthew 244: while ($x > ($binend-.001)) {
1.1 matthew 245: # store the old data
246: push (@Bins,{ start => $binstart,
247: count => $count,
248: end => $binend });
249: # start counting again
250: $binstart += $binsize;
251: $binend += $binsize;
252: $count = 0;
253: }
254: $count+=$y;
255: }
1.9 matthew 256: if ($count > 0) {
257: push (@Bins,{ start => $binstart,
258: count => $count,
259: end => $binend });
260: }
1.1 matthew 261: return @Bins;
262: }
263:
264: #########################################################
265: #########################################################
266:
267: =pod
268:
1.2 matthew 269: =item &CreateInterface
270:
271: Inputs: none.
272:
273: Returns: HTML for the correct problems plot interface.
1.1 matthew 274:
275: =cut
276:
277: #########################################################
278: #########################################################
279: sub CreateInterface {
280: ##
281: ## Environment variable initialization
282: my $Str;
1.7 matthew 283: $Str .= &Apache::lonhtmlcommon::breadcrumbs
1.8 matthew 284: (undef,'Correct Problems Plot');
1.11 matthew 285: $Str .= '<p>';
286: #
1.1 matthew 287: $Str .= '<table cellspacing="5">'."\n";
288: $Str .= '<tr>';
289: $Str .= '<td align="center"><b>'.&mt('Sections').'</b></td>';
290: $Str .= '<td align="center"><b>'.&mt('Enrollment Status').'</b></td>';
291: $Str .= '<td align="center"><b>'.&mt('Sequences and Folders').'</b></td>';
1.9 matthew 292: $Str .= '<td rowspan="2">'.
293: &Apache::lonstathelpers::limit_by_time_form().'</td>';
1.1 matthew 294: $Str .= '</tr>'."\n";
1.11 matthew 295: #
1.1 matthew 296: $Str .= '<tr><td align="center">'."\n";
297: $Str .= &Apache::lonstatistics::SectionSelect('Section','multiple',5);
298: $Str .= '</td>';
299: #
300: $Str .= '<td align="center">';
301: $Str .= &Apache::lonhtmlcommon::StatusOptions(undef,undef,5);
302: $Str .= '</td><td>'."\n";
303: #
304: my $only_seq_with_assessments = sub {
305: my $s=shift;
306: if ($s->{'num_assess'} < 1) {
307: return 0;
308: } else {
309: return 1;
310: }
311: };
312: $Str .= &Apache::lonstatistics::MapSelect('Maps','multiple,all',5,
313: $only_seq_with_assessments);
1.9 matthew 314: $Str .= '</td>';
315: #
1.1 matthew 316: $Str .= '</tr>'."\n";
317: $Str .= '</table>'."\n";
1.11 matthew 318: #
319: $Str .= '<nobr>'.&mt('Status: [_1]',
320: '<input type="text" '.
321: 'name="stats_status" size="60" value="" />').
322: '</nobr>'.'</p>';
323: ##
1.1 matthew 324: return $Str;
325: }
326:
327: 1;
328:
329: __END__
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