Annotation of loncom/interface/statistics/loncorrectproblemplot.pm, revision 1.22
1.1 matthew 1: # The LearningOnline Network with CAPA
2: #
1.22 ! albertel 3: # $Id: loncorrectproblemplot.pm,v 1.21 2006/08/18 15:15:38 raeburn 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',
1.20 raeburn 62: 'Section' => 'array',
63: 'Groups' => 'array');
1.1 matthew 64: &Apache::loncommon::store_course_settings('correct_problems_plot',
65: \%Saveable_Parameters);
66: &Apache::loncommon::restore_course_settings('correct_problems_plot',
67: \%Saveable_Parameters);
68: #
69: &Apache::lonstatistics::PrepareClasslist();
70: #
71: $r->print(&CreateInterface());
72: #
73: my @Students = @Apache::lonstatistics::Students;
74: #
75: if (@Students < 1) {
76: $r->print('<h2>'.
1.20 raeburn 77: &mt('There are no students in the sections/groups selected').
1.1 matthew 78: '</h2>');
79: }
80: #
1.11 matthew 81: my @CacheButtonHTML =
82: &Apache::lonstathelpers::manage_caches($r,'Statistics','stats_status');
1.1 matthew 83: foreach my $button (@SubmitButtons) {
84: $r->print('<input type="submit" name="'.$button->{'name'}.'" '.
85: 'value="'.&mt($button->{'text'}).'" />');
86: $r->print(' 'x5);
87: }
1.11 matthew 88: foreach my $html (@CacheButtonHTML) {
89: $r->print($html.(' 'x5));
90: }
1.1 matthew 91: $r->rflush();
92: #
93: # Determine which problem symbs we are to sum over
1.18 albertel 94: if (exists($env{'form.CreatePlot'})) {
1.1 matthew 95: my @ProblemSymbs;
1.16 matthew 96: my $total_weights = 0;
1.9 matthew 97: my $title = '';
1.15 matthew 98: my @maps = &Apache::lonstatistics::get_selected_maps('Maps');
99: my ($navmap,@sequences) =
100: &Apache::lonstatistics::selected_sequences_with_assessments();
101: if ($maps[0] ne 'all') {
102: foreach my $seq (@sequences) {
1.9 matthew 103: if ($title eq '') {
1.15 matthew 104: $title = $seq->compTitle;
1.9 matthew 105: } else {
106: $title = 'Multiple Sequences';
107: }
1.1 matthew 108: }
1.13 matthew 109: } else {
1.16 matthew 110: $title = 'All Problems';
111: }
112: foreach my $seq (@sequences) {
113: my @resources =
114: &Apache::lonstathelpers::get_resources($navmap,$seq);
115: foreach my $res (@resources) {
116: foreach my $partid (@{$res->parts}) {
117: push(@ProblemSymbs,{symb=>$res->symb,
118: part=>$partid});
119: $total_weights +=
120: &Apache::lonnet::EXT('resource.'.$partid.'.weight',
121: $res->symb,
122: undef,undef,undef);
1.13 matthew 123: }
124: }
1.1 matthew 125: }
1.17 matthew 126: $r->print('<h4>'.
127: &Apache::lonstatistics::section_and_enrollment_description().
128: '</h4>');
1.9 matthew 129: my ($starttime,$endtime) = &Apache::lonstathelpers::get_time_limits();
1.10 matthew 130: if (defined($starttime) || defined($endtime)) {
131: # Inform the user what the time limits on the data are.
132: $r->print(&mt('Statistics on submissions from [_1] to [_2]',
133: &Apache::lonlocal::locallocaltime($starttime),
134: &Apache::lonlocal::locallocaltime($endtime)));
135: }
1.16 matthew 136: &Apache::loncoursedata::populate_weight_table();
1.1 matthew 137: my $score_data = &Apache::loncoursedata::get_student_scores
1.17 matthew 138: ([&Apache::lonstatistics::get_selected_sections()],
1.20 raeburn 139: [&Apache::lonstatistics::get_selected_groups()],
1.1 matthew 140: \@ProblemSymbs,
1.9 matthew 141: $Apache::lonstatistics::enrollment_status,undef,
142: $starttime,$endtime);
1.16 matthew 143: $r->print(&AnalyzeScoreData($score_data,$title,$total_weights));
1.11 matthew 144: } else {
145: $r->print('<h3>'.&mt('Make a sequence selection from the "Sequences and Folders" menu and hit "Create Plot" to begin').'</h3>');
1.1 matthew 146: }
147: return;
148: }
149:
150: #########################################################
151: #########################################################
152:
153: =pod
154:
1.2 matthew 155: =item & AnalyzeScoreData($score_data)
156:
157: Analyze the result of &Apache::loncoursedata::get_student_scores() and
158: return html with a plot of the data and a table of the values and bins.
1.1 matthew 159:
160: =cut
161:
162: #########################################################
163: #########################################################
164: sub AnalyzeScoreData {
1.16 matthew 165: my ($score_data,$title,$maximum) = @_;
1.1 matthew 166: #
167: # Basic check first
1.12 matthew 168: if (ref($score_data) ne 'ARRAY' || @$score_data < 1) {
169: return '<h2>'.&mt('There is no data to plot').'</h2>';
1.1 matthew 170: }
171: #
172: # Determine which bins to use
173: my $lowest = $score_data->[0]->[0];
174: $lowest = 0;
175: my $highest = $score_data->[-1]->[0];
176: my $binsize = 1;
177: if ($highest > 50) { $binsize = 2; }
178: if ($highest > 100) { $binsize = 5; }
179: if ($highest > 200) { $binsize = 10; }
180: if ($highest > 500) { $binsize = 20; }
181: if ($highest > 1000) { $binsize = 50; }
182: if ($highest > 2000) { $binsize = 100; }
183: #
184: # Get the data into the bins (destroying $score_data in the process)
185: my @Bins = &bin_data($score_data,$binsize,$lowest,$highest);
186: my @Xdata; my @Ydata; my $max;
1.11 matthew 187: my $Str =
1.16 matthew 188: '<p>'.
189: &mt('Problem weights do not reflect individual student settings.')
190: .'</p>'.
1.11 matthew 191: '<table border="1">'."\n".'<tr><th>Range</th><th>Count</th></tr>'."\n";
1.9 matthew 192: my $sum = 0;
1.1 matthew 193: while (my $bin = shift(@Bins)) {
194: push (@Xdata,$bin->{'start'});
195: push (@Ydata,$bin->{'count'});
1.9 matthew 196: $sum += $bin->{'count'};
1.1 matthew 197: if ($bin->{'count'} > $max) {
198: $max = $bin->{'count'};
199: }
200: $Str.= '<tr><td>'.$bin->{'start'}.' - '.$bin->{'end'}.'</td>'.
201: '<td>'.$bin->{'count'}.'</td></tr>'."\n";
202: }
1.5 matthew 203: # scale max to an integer.
204: $max = 5*(int($max/5)+1);
1.1 matthew 205: $Str .= "</table><br />\n";
1.9 matthew 206: $title = &HTML::Entities::decode($title);
1.16 matthew 207: $Str = "\n<p>".
208: &Apache::loncommon::DrawBarGraph($title.' ('.$sum.' students)',
209: 'Correct Problems (max possible = '.$maximum.')',
210: 'Number of students',
211: $max,undef, # colors
212: \@Xdata,\@Ydata).
213: "\n<br />\n".$Str;
1.11 matthew 214: $Str .= '</p>'."\n";
1.1 matthew 215: return $Str;
216: }
217:
218:
219: #########################################################
220: #########################################################
221:
222: =pod
223:
224: =item &bin_data($data,$binsize,$startbin,$endbin)
225:
226: Note: This routine destroys the array of data passed to it.
227:
228: Inputs: $data: array reference - the contents of @$data must
229: be arrays with x and y data. $data = [ [x1,y1],[x2,y2],...];
230: $binsize: Width of bins to put data in
231: $startbin: the starting bin.
232: $endbin: the ending bin.
233: Returns: Array of Bins. Each bin is a hash reference with the following
234: keys: 'start', 'count', and 'end'.
235:
236: =cut
237:
238: #########################################################
239: #########################################################
240: sub bin_data {
241: my ($data,$binsize,$startbin,$endbin)=@_;
242: return () if (! defined($data) || ref($data) ne 'ARRAY');
243: #
244: # Determine bin geometry
245: my $binstart = $startbin;
246: my $binend = $startbin+$binsize;
247: # put the data into bins
248: my @Bins;
249: my $count=0;
250: my $idx=0;
1.22 ! albertel 251: while ($idx < scalar(@$data) && ($endbin-$binend + $binsize)>=0) {
1.1 matthew 252: my $dataset = $data->[$idx++];
253: my ($x,$y) = @{$dataset};
1.9 matthew 254: while ($x > ($binend-.001)) {
1.1 matthew 255: # store the old data
256: push (@Bins,{ start => $binstart,
257: count => $count,
258: end => $binend });
259: # start counting again
260: $binstart += $binsize;
261: $binend += $binsize;
262: $count = 0;
263: }
264: $count+=$y;
265: }
1.9 matthew 266: if ($count > 0) {
267: push (@Bins,{ start => $binstart,
268: count => $count,
269: end => $binend });
270: }
1.1 matthew 271: return @Bins;
272: }
273:
274: #########################################################
275: #########################################################
276:
277: =pod
278:
1.2 matthew 279: =item &CreateInterface
280:
281: Inputs: none.
282:
283: Returns: HTML for the correct problems plot interface.
1.1 matthew 284:
285: =cut
286:
287: #########################################################
288: #########################################################
289: sub CreateInterface {
290: ##
291: ## Environment variable initialization
292: my $Str;
1.19 albertel 293: $Str .= &Apache::lonhtmlcommon::breadcrumbs('Correct Problems Plot');
1.11 matthew 294: $Str .= '<p>';
295: #
1.1 matthew 296: $Str .= '<table cellspacing="5">'."\n";
297: $Str .= '<tr>';
298: $Str .= '<td align="center"><b>'.&mt('Sections').'</b></td>';
1.20 raeburn 299: $Str .= '<td align="center"><b>'.&mt('Groups').'</b></td>';
1.21 raeburn 300: $Str .= '<td align="center"><b>'.&mt('Access Status').'</b></td>';
1.1 matthew 301: $Str .= '<td align="center"><b>'.&mt('Sequences and Folders').'</b></td>';
1.9 matthew 302: $Str .= '<td rowspan="2">'.
303: &Apache::lonstathelpers::limit_by_time_form().'</td>';
1.1 matthew 304: $Str .= '</tr>'."\n";
1.11 matthew 305: #
1.1 matthew 306: $Str .= '<tr><td align="center">'."\n";
307: $Str .= &Apache::lonstatistics::SectionSelect('Section','multiple',5);
308: $Str .= '</td>';
309: #
1.20 raeburn 310: $Str .= '<td align="center">'."\n";
311: $Str .= &Apache::lonstatistics::GroupSelect('Group','multiple',5);
312: $Str .= '</td>';
1.1 matthew 313: $Str .= '<td align="center">';
314: $Str .= &Apache::lonhtmlcommon::StatusOptions(undef,undef,5);
315: $Str .= '</td><td>'."\n";
316: #
1.15 matthew 317: $Str .= &Apache::lonstatistics::map_select('Maps','multiple,all',5);
1.9 matthew 318: $Str .= '</td>';
319: #
1.1 matthew 320: $Str .= '</tr>'."\n";
321: $Str .= '</table>'."\n";
1.11 matthew 322: #
323: $Str .= '<nobr>'.&mt('Status: [_1]',
324: '<input type="text" '.
325: 'name="stats_status" size="60" value="" />').
326: '</nobr>'.'</p>';
327: ##
1.1 matthew 328: return $Str;
329: }
330:
331: 1;
332:
333: __END__
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