Annotation of loncom/interface/statistics/loncorrectproblemplot.pm, revision 1.16
1.1 matthew 1: # The LearningOnline Network with CAPA
2: #
1.16 ! matthew 3: # $Id: loncorrectproblemplot.pm,v 1.15 2005/03/01 22:25:59 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;
1.16 ! 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: $res->symb,
! 121: undef,undef,undef);
1.13 matthew 122: }
123: }
1.1 matthew 124: }
1.9 matthew 125: my ($starttime,$endtime) = &Apache::lonstathelpers::get_time_limits();
1.10 matthew 126: if (defined($starttime) || defined($endtime)) {
127: # Inform the user what the time limits on the data are.
128: $r->print(&mt('Statistics on submissions from [_1] to [_2]',
129: &Apache::lonlocal::locallocaltime($starttime),
130: &Apache::lonlocal::locallocaltime($endtime)));
131: }
1.16 ! matthew 132: &Apache::loncoursedata::populate_weight_table();
1.1 matthew 133: my $score_data = &Apache::loncoursedata::get_student_scores
134: (\@Apache::lonstatistics::SelectedSections,
135: \@ProblemSymbs,
1.9 matthew 136: $Apache::lonstatistics::enrollment_status,undef,
137: $starttime,$endtime);
1.16 ! matthew 138: $r->print(&AnalyzeScoreData($score_data,$title,$total_weights));
1.11 matthew 139: } else {
140: $r->print('<h3>'.&mt('Make a sequence selection from the "Sequences and Folders" menu and hit "Create Plot" to begin').'</h3>');
1.1 matthew 141: }
142: return;
143: }
144:
145: #########################################################
146: #########################################################
147:
148: =pod
149:
1.2 matthew 150: =item & AnalyzeScoreData($score_data)
151:
152: Analyze the result of &Apache::loncoursedata::get_student_scores() and
153: return html with a plot of the data and a table of the values and bins.
1.1 matthew 154:
155: =cut
156:
157: #########################################################
158: #########################################################
159: sub AnalyzeScoreData {
1.16 ! matthew 160: my ($score_data,$title,$maximum) = @_;
1.1 matthew 161: #
162: # Basic check first
1.12 matthew 163: if (ref($score_data) ne 'ARRAY' || @$score_data < 1) {
164: return '<h2>'.&mt('There is no data to plot').'</h2>';
1.1 matthew 165: }
166: #
167: # Determine which bins to use
168: my $lowest = $score_data->[0]->[0];
169: $lowest = 0;
170: my $highest = $score_data->[-1]->[0];
171: my $binsize = 1;
172: if ($highest > 50) { $binsize = 2; }
173: if ($highest > 100) { $binsize = 5; }
174: if ($highest > 200) { $binsize = 10; }
175: if ($highest > 500) { $binsize = 20; }
176: if ($highest > 1000) { $binsize = 50; }
177: if ($highest > 2000) { $binsize = 100; }
178: #
179: # Get the data into the bins (destroying $score_data in the process)
180: my @Bins = &bin_data($score_data,$binsize,$lowest,$highest);
181: my @Xdata; my @Ydata; my $max;
1.11 matthew 182: my $Str =
1.16 ! matthew 183: '<p>'.
! 184: &mt('Problem weights do not reflect individual student settings.')
! 185: .'</p>'.
1.11 matthew 186: '<table border="1">'."\n".'<tr><th>Range</th><th>Count</th></tr>'."\n";
1.9 matthew 187: my $sum = 0;
1.1 matthew 188: while (my $bin = shift(@Bins)) {
189: push (@Xdata,$bin->{'start'});
190: push (@Ydata,$bin->{'count'});
1.9 matthew 191: $sum += $bin->{'count'};
1.1 matthew 192: if ($bin->{'count'} > $max) {
193: $max = $bin->{'count'};
194: }
195: $Str.= '<tr><td>'.$bin->{'start'}.' - '.$bin->{'end'}.'</td>'.
196: '<td>'.$bin->{'count'}.'</td></tr>'."\n";
197: }
1.5 matthew 198: # scale max to an integer.
199: $max = 5*(int($max/5)+1);
1.1 matthew 200: $Str .= "</table><br />\n";
1.9 matthew 201: $title = &HTML::Entities::decode($title);
1.16 ! matthew 202: $Str = "\n<p>".
! 203: &Apache::loncommon::DrawBarGraph($title.' ('.$sum.' students)',
! 204: 'Correct Problems (max possible = '.$maximum.')',
! 205: 'Number of students',
! 206: $max,undef, # colors
! 207: \@Xdata,\@Ydata).
! 208: "\n<br />\n".$Str;
1.11 matthew 209: $Str .= '</p>'."\n";
1.1 matthew 210: return $Str;
211: }
212:
213:
214: #########################################################
215: #########################################################
216:
217: =pod
218:
219: =item &bin_data($data,$binsize,$startbin,$endbin)
220:
221: Note: This routine destroys the array of data passed to it.
222:
223: Inputs: $data: array reference - the contents of @$data must
224: be arrays with x and y data. $data = [ [x1,y1],[x2,y2],...];
225: $binsize: Width of bins to put data in
226: $startbin: the starting bin.
227: $endbin: the ending bin.
228: Returns: Array of Bins. Each bin is a hash reference with the following
229: keys: 'start', 'count', and 'end'.
230:
231: =cut
232:
233: #########################################################
234: #########################################################
235: sub bin_data {
236: my ($data,$binsize,$startbin,$endbin)=@_;
237: return () if (! defined($data) || ref($data) ne 'ARRAY');
238: #
239: # Determine bin geometry
240: my $binstart = $startbin;
241: my $binend = $startbin+$binsize;
242: # put the data into bins
243: my @Bins;
244: my $count=0;
245: my $idx=0;
1.9 matthew 246: while ($idx < scalar(@$data) && ($endbin-$binend + $binsize)>0) {
1.1 matthew 247: my $dataset = $data->[$idx++];
248: my ($x,$y) = @{$dataset};
1.9 matthew 249: while ($x > ($binend-.001)) {
1.1 matthew 250: # store the old data
251: push (@Bins,{ start => $binstart,
252: count => $count,
253: end => $binend });
254: # start counting again
255: $binstart += $binsize;
256: $binend += $binsize;
257: $count = 0;
258: }
259: $count+=$y;
260: }
1.9 matthew 261: if ($count > 0) {
262: push (@Bins,{ start => $binstart,
263: count => $count,
264: end => $binend });
265: }
1.1 matthew 266: return @Bins;
267: }
268:
269: #########################################################
270: #########################################################
271:
272: =pod
273:
1.2 matthew 274: =item &CreateInterface
275:
276: Inputs: none.
277:
278: Returns: HTML for the correct problems plot interface.
1.1 matthew 279:
280: =cut
281:
282: #########################################################
283: #########################################################
284: sub CreateInterface {
285: ##
286: ## Environment variable initialization
287: my $Str;
1.15 matthew 288: $Str .= &Apache::lonhtmlcommon::breadcrumbs(undef,'Correct Problems Plot');
1.11 matthew 289: $Str .= '<p>';
290: #
1.1 matthew 291: $Str .= '<table cellspacing="5">'."\n";
292: $Str .= '<tr>';
293: $Str .= '<td align="center"><b>'.&mt('Sections').'</b></td>';
294: $Str .= '<td align="center"><b>'.&mt('Enrollment Status').'</b></td>';
295: $Str .= '<td align="center"><b>'.&mt('Sequences and Folders').'</b></td>';
1.9 matthew 296: $Str .= '<td rowspan="2">'.
297: &Apache::lonstathelpers::limit_by_time_form().'</td>';
1.1 matthew 298: $Str .= '</tr>'."\n";
1.11 matthew 299: #
1.1 matthew 300: $Str .= '<tr><td align="center">'."\n";
301: $Str .= &Apache::lonstatistics::SectionSelect('Section','multiple',5);
302: $Str .= '</td>';
303: #
304: $Str .= '<td align="center">';
305: $Str .= &Apache::lonhtmlcommon::StatusOptions(undef,undef,5);
306: $Str .= '</td><td>'."\n";
307: #
1.15 matthew 308: $Str .= &Apache::lonstatistics::map_select('Maps','multiple,all',5);
1.9 matthew 309: $Str .= '</td>';
310: #
1.1 matthew 311: $Str .= '</tr>'."\n";
312: $Str .= '</table>'."\n";
1.11 matthew 313: #
314: $Str .= '<nobr>'.&mt('Status: [_1]',
315: '<input type="text" '.
316: 'name="stats_status" size="60" value="" />').
317: '</nobr>'.'</p>';
318: ##
1.1 matthew 319: return $Str;
320: }
321:
322: 1;
323:
324: __END__
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