Annotation of loncom/interface/statistics/loncorrectproblemplot.pm, revision 1.18
1.1 matthew 1: # The LearningOnline Network with CAPA
2: #
1.18 ! albertel 3: # $Id: loncorrectproblemplot.pm,v 1.17 2005/03/14 20:28:22 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;
1.18 ! albertel 31: use Apache::lonnet;
1.1 matthew 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: $r->rflush();
91: #
92: # Determine which problem symbs we are to sum over
1.18 ! albertel 93: if (exists($env{'form.CreatePlot'})) {
1.1 matthew 94: my @ProblemSymbs;
1.16 matthew 95: my $total_weights = 0;
1.9 matthew 96: my $title = '';
1.15 matthew 97: my @maps = &Apache::lonstatistics::get_selected_maps('Maps');
98: my ($navmap,@sequences) =
99: &Apache::lonstatistics::selected_sequences_with_assessments();
100: if ($maps[0] ne 'all') {
101: foreach my $seq (@sequences) {
1.9 matthew 102: if ($title eq '') {
1.15 matthew 103: $title = $seq->compTitle;
1.9 matthew 104: } else {
105: $title = 'Multiple Sequences';
106: }
1.1 matthew 107: }
1.13 matthew 108: } else {
1.16 matthew 109: $title = 'All Problems';
110: }
111: foreach my $seq (@sequences) {
112: my @resources =
113: &Apache::lonstathelpers::get_resources($navmap,$seq);
114: foreach my $res (@resources) {
115: foreach my $partid (@{$res->parts}) {
116: push(@ProblemSymbs,{symb=>$res->symb,
117: part=>$partid});
118: $total_weights +=
119: &Apache::lonnet::EXT('resource.'.$partid.'.weight',
120: $res->symb,
121: undef,undef,undef);
1.13 matthew 122: }
123: }
1.1 matthew 124: }
1.17 matthew 125: $r->print('<h4>'.
126: &Apache::lonstatistics::section_and_enrollment_description().
127: '</h4>');
1.9 matthew 128: my ($starttime,$endtime) = &Apache::lonstathelpers::get_time_limits();
1.10 matthew 129: if (defined($starttime) || defined($endtime)) {
130: # Inform the user what the time limits on the data are.
131: $r->print(&mt('Statistics on submissions from [_1] to [_2]',
132: &Apache::lonlocal::locallocaltime($starttime),
133: &Apache::lonlocal::locallocaltime($endtime)));
134: }
1.16 matthew 135: &Apache::loncoursedata::populate_weight_table();
1.1 matthew 136: my $score_data = &Apache::loncoursedata::get_student_scores
1.17 matthew 137: ([&Apache::lonstatistics::get_selected_sections()],
1.1 matthew 138: \@ProblemSymbs,
1.9 matthew 139: $Apache::lonstatistics::enrollment_status,undef,
140: $starttime,$endtime);
1.16 matthew 141: $r->print(&AnalyzeScoreData($score_data,$title,$total_weights));
1.11 matthew 142: } else {
143: $r->print('<h3>'.&mt('Make a sequence selection from the "Sequences and Folders" menu and hit "Create Plot" to begin').'</h3>');
1.1 matthew 144: }
145: return;
146: }
147:
148: #########################################################
149: #########################################################
150:
151: =pod
152:
1.2 matthew 153: =item & AnalyzeScoreData($score_data)
154:
155: Analyze the result of &Apache::loncoursedata::get_student_scores() and
156: return html with a plot of the data and a table of the values and bins.
1.1 matthew 157:
158: =cut
159:
160: #########################################################
161: #########################################################
162: sub AnalyzeScoreData {
1.16 matthew 163: my ($score_data,$title,$maximum) = @_;
1.1 matthew 164: #
165: # Basic check first
1.12 matthew 166: if (ref($score_data) ne 'ARRAY' || @$score_data < 1) {
167: return '<h2>'.&mt('There is no data to plot').'</h2>';
1.1 matthew 168: }
169: #
170: # Determine which bins to use
171: my $lowest = $score_data->[0]->[0];
172: $lowest = 0;
173: my $highest = $score_data->[-1]->[0];
174: my $binsize = 1;
175: if ($highest > 50) { $binsize = 2; }
176: if ($highest > 100) { $binsize = 5; }
177: if ($highest > 200) { $binsize = 10; }
178: if ($highest > 500) { $binsize = 20; }
179: if ($highest > 1000) { $binsize = 50; }
180: if ($highest > 2000) { $binsize = 100; }
181: #
182: # Get the data into the bins (destroying $score_data in the process)
183: my @Bins = &bin_data($score_data,$binsize,$lowest,$highest);
184: my @Xdata; my @Ydata; my $max;
1.11 matthew 185: my $Str =
1.16 matthew 186: '<p>'.
187: &mt('Problem weights do not reflect individual student settings.')
188: .'</p>'.
1.11 matthew 189: '<table border="1">'."\n".'<tr><th>Range</th><th>Count</th></tr>'."\n";
1.9 matthew 190: my $sum = 0;
1.1 matthew 191: while (my $bin = shift(@Bins)) {
192: push (@Xdata,$bin->{'start'});
193: push (@Ydata,$bin->{'count'});
1.9 matthew 194: $sum += $bin->{'count'};
1.1 matthew 195: if ($bin->{'count'} > $max) {
196: $max = $bin->{'count'};
197: }
198: $Str.= '<tr><td>'.$bin->{'start'}.' - '.$bin->{'end'}.'</td>'.
199: '<td>'.$bin->{'count'}.'</td></tr>'."\n";
200: }
1.5 matthew 201: # scale max to an integer.
202: $max = 5*(int($max/5)+1);
1.1 matthew 203: $Str .= "</table><br />\n";
1.9 matthew 204: $title = &HTML::Entities::decode($title);
1.16 matthew 205: $Str = "\n<p>".
206: &Apache::loncommon::DrawBarGraph($title.' ('.$sum.' students)',
207: 'Correct Problems (max possible = '.$maximum.')',
208: 'Number of students',
209: $max,undef, # colors
210: \@Xdata,\@Ydata).
211: "\n<br />\n".$Str;
1.11 matthew 212: $Str .= '</p>'."\n";
1.1 matthew 213: return $Str;
214: }
215:
216:
217: #########################################################
218: #########################################################
219:
220: =pod
221:
222: =item &bin_data($data,$binsize,$startbin,$endbin)
223:
224: Note: This routine destroys the array of data passed to it.
225:
226: Inputs: $data: array reference - the contents of @$data must
227: be arrays with x and y data. $data = [ [x1,y1],[x2,y2],...];
228: $binsize: Width of bins to put data in
229: $startbin: the starting bin.
230: $endbin: the ending bin.
231: Returns: Array of Bins. Each bin is a hash reference with the following
232: keys: 'start', 'count', and 'end'.
233:
234: =cut
235:
236: #########################################################
237: #########################################################
238: sub bin_data {
239: my ($data,$binsize,$startbin,$endbin)=@_;
240: return () if (! defined($data) || ref($data) ne 'ARRAY');
241: #
242: # Determine bin geometry
243: my $binstart = $startbin;
244: my $binend = $startbin+$binsize;
245: # put the data into bins
246: my @Bins;
247: my $count=0;
248: my $idx=0;
1.9 matthew 249: while ($idx < scalar(@$data) && ($endbin-$binend + $binsize)>0) {
1.1 matthew 250: my $dataset = $data->[$idx++];
251: my ($x,$y) = @{$dataset};
1.9 matthew 252: while ($x > ($binend-.001)) {
1.1 matthew 253: # store the old data
254: push (@Bins,{ start => $binstart,
255: count => $count,
256: end => $binend });
257: # start counting again
258: $binstart += $binsize;
259: $binend += $binsize;
260: $count = 0;
261: }
262: $count+=$y;
263: }
1.9 matthew 264: if ($count > 0) {
265: push (@Bins,{ start => $binstart,
266: count => $count,
267: end => $binend });
268: }
1.1 matthew 269: return @Bins;
270: }
271:
272: #########################################################
273: #########################################################
274:
275: =pod
276:
1.2 matthew 277: =item &CreateInterface
278:
279: Inputs: none.
280:
281: Returns: HTML for the correct problems plot interface.
1.1 matthew 282:
283: =cut
284:
285: #########################################################
286: #########################################################
287: sub CreateInterface {
288: ##
289: ## Environment variable initialization
290: my $Str;
1.15 matthew 291: $Str .= &Apache::lonhtmlcommon::breadcrumbs(undef,'Correct Problems Plot');
1.11 matthew 292: $Str .= '<p>';
293: #
1.1 matthew 294: $Str .= '<table cellspacing="5">'."\n";
295: $Str .= '<tr>';
296: $Str .= '<td align="center"><b>'.&mt('Sections').'</b></td>';
297: $Str .= '<td align="center"><b>'.&mt('Enrollment Status').'</b></td>';
298: $Str .= '<td align="center"><b>'.&mt('Sequences and Folders').'</b></td>';
1.9 matthew 299: $Str .= '<td rowspan="2">'.
300: &Apache::lonstathelpers::limit_by_time_form().'</td>';
1.1 matthew 301: $Str .= '</tr>'."\n";
1.11 matthew 302: #
1.1 matthew 303: $Str .= '<tr><td align="center">'."\n";
304: $Str .= &Apache::lonstatistics::SectionSelect('Section','multiple',5);
305: $Str .= '</td>';
306: #
307: $Str .= '<td align="center">';
308: $Str .= &Apache::lonhtmlcommon::StatusOptions(undef,undef,5);
309: $Str .= '</td><td>'."\n";
310: #
1.15 matthew 311: $Str .= &Apache::lonstatistics::map_select('Maps','multiple,all',5);
1.9 matthew 312: $Str .= '</td>';
313: #
1.1 matthew 314: $Str .= '</tr>'."\n";
315: $Str .= '</table>'."\n";
1.11 matthew 316: #
317: $Str .= '<nobr>'.&mt('Status: [_1]',
318: '<input type="text" '.
319: 'name="stats_status" size="60" value="" />').
320: '</nobr>'.'</p>';
321: ##
1.1 matthew 322: return $Str;
323: }
324:
325: 1;
326:
327: __END__
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