Annotation of loncom/interface/statistics/loncorrectproblemplot.pm, revision 1.9
1.1 matthew 1: # The LearningOnline Network with CAPA
2: #
1.9 ! matthew 3: # $Id: loncorrectproblemplot.pm,v 1.8 2004/03/01 16:39:19 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;
1.9 ! matthew 106: my $total_parts = 0;
! 107: my $title = '';
1.1 matthew 108: if ($Apache::lonstatistics::SelectedMaps[0] ne 'all') {
109: foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()){
1.9 ! matthew 110: if ($title eq '') {
! 111: $title = $seq->{'title'};
! 112: } else {
! 113: $title = 'Multiple Sequences';
! 114: }
1.1 matthew 115: foreach my $res (@{$seq->{'contents'}}) {
116: next if ($res->{'type'} ne 'assessment');
117: foreach my $part (@{$res->{'parts'}}) {
1.9 ! matthew 118: $total_parts++;
1.1 matthew 119: push(@ProblemSymbs,{symb=>$res->{'symb'},
120: part=>$part});
121: }
122: }
123: }
124: }
1.9 ! matthew 125: my ($starttime,$endtime) = &Apache::lonstathelpers::get_time_limits();
1.1 matthew 126: my $score_data = &Apache::loncoursedata::get_student_scores
127: (\@Apache::lonstatistics::SelectedSections,
128: \@ProblemSymbs,
1.9 ! matthew 129: $Apache::lonstatistics::enrollment_status,undef,
! 130: $starttime,$endtime);
! 131: $r->print(&AnalyzeScoreData($score_data,$title,$total_parts));
1.1 matthew 132: }
133: return;
134: }
135:
136: #########################################################
137: #########################################################
138:
139: =pod
140:
1.2 matthew 141: =item & AnalyzeScoreData($score_data)
142:
143: Analyze the result of &Apache::loncoursedata::get_student_scores() and
144: return html with a plot of the data and a table of the values and bins.
1.1 matthew 145:
146: =cut
147:
148: #########################################################
149: #########################################################
150: sub AnalyzeScoreData {
1.9 ! matthew 151: my ($score_data,$title,$total_parts) = @_;
1.1 matthew 152: #
153: # Basic check first
154: if (@$score_data < 1) {
155: return '<h2>There is no data to plot</h2>';
156: }
157: #
158: # Determine which bins to use
159: my $lowest = $score_data->[0]->[0];
160: $lowest = 0;
161: my $highest = $score_data->[-1]->[0];
1.9 ! matthew 162: &Apache::lonnet::logthis('highest = '.$highest);
1.1 matthew 163: my $binsize = 1;
164: if ($highest > 50) { $binsize = 2; }
165: if ($highest > 100) { $binsize = 5; }
166: if ($highest > 200) { $binsize = 10; }
167: if ($highest > 500) { $binsize = 20; }
168: if ($highest > 1000) { $binsize = 50; }
169: if ($highest > 2000) { $binsize = 100; }
170: #
171: # Get the data into the bins (destroying $score_data in the process)
172: my @Bins = &bin_data($score_data,$binsize,$lowest,$highest);
173: my @Xdata; my @Ydata; my $max;
174: my $Str = '<table border="1">'."\n".'<tr><th>Range</th><th>Count</th></tr>'."\n";
1.9 ! matthew 175: my $sum = 0;
1.1 matthew 176: while (my $bin = shift(@Bins)) {
177: push (@Xdata,$bin->{'start'});
178: push (@Ydata,$bin->{'count'});
1.9 ! matthew 179: $sum += $bin->{'count'};
1.1 matthew 180: if ($bin->{'count'} > $max) {
181: $max = $bin->{'count'};
182: }
183: $Str.= '<tr><td>'.$bin->{'start'}.' - '.$bin->{'end'}.'</td>'.
184: '<td>'.$bin->{'count'}.'</td></tr>'."\n";
185: }
1.5 matthew 186: # scale max to an integer.
187: $max = 5*(int($max/5)+1);
1.1 matthew 188: $Str .= "</table><br />\n";
1.9 ! matthew 189: $title = &HTML::Entities::decode($title);
! 190: $Str = "<br />\n".&Apache::loncommon::DrawBarGraph($title.' N = '.$sum,
! 191: 'Num Correct Problems (max:'.$total_parts.')',
1.1 matthew 192: 'Number of students',
193: $max,
194: undef, # colors
195: \@Xdata,
196: \@Ydata).
197: "\n<br />\n".$Str;
198: return $Str;
199: }
200:
201:
202: #########################################################
203: #########################################################
204:
205: =pod
206:
207: =item &bin_data($data,$binsize,$startbin,$endbin)
208:
209: Note: This routine destroys the array of data passed to it.
210:
211: Inputs: $data: array reference - the contents of @$data must
212: be arrays with x and y data. $data = [ [x1,y1],[x2,y2],...];
213: $binsize: Width of bins to put data in
214: $startbin: the starting bin.
215: $endbin: the ending bin.
216: Returns: Array of Bins. Each bin is a hash reference with the following
217: keys: 'start', 'count', and 'end'.
218:
219: =cut
220:
221: #########################################################
222: #########################################################
223: sub bin_data {
224: my ($data,$binsize,$startbin,$endbin)=@_;
225: return () if (! defined($data) || ref($data) ne 'ARRAY');
226: #
227: # Determine bin geometry
228: my $binstart = $startbin;
229: my $binend = $startbin+$binsize;
230: # put the data into bins
231: my @Bins;
232: my $count=0;
233: my $idx=0;
1.9 ! matthew 234: while ($idx < scalar(@$data) && ($endbin-$binend + $binsize)>0) {
1.1 matthew 235: my $dataset = $data->[$idx++];
236: my ($x,$y) = @{$dataset};
1.9 ! matthew 237: while ($x > ($binend-.001)) {
1.1 matthew 238: # store the old data
239: push (@Bins,{ start => $binstart,
240: count => $count,
241: end => $binend });
242: # start counting again
243: $binstart += $binsize;
244: $binend += $binsize;
245: $count = 0;
246: }
247: $count+=$y;
248: }
1.9 ! matthew 249: if ($count > 0) {
! 250: push (@Bins,{ start => $binstart,
! 251: count => $count,
! 252: end => $binend });
! 253: }
1.1 matthew 254: return @Bins;
255: }
256:
257: #########################################################
258: #########################################################
259:
260: =pod
261:
1.2 matthew 262: =item &CreateInterface
263:
264: Inputs: none.
265:
266: Returns: HTML for the correct problems plot interface.
1.1 matthew 267:
268: =cut
269:
270: #########################################################
271: #########################################################
272: sub CreateInterface {
273: ##
274: ## Environment variable initialization
275: my $Str;
1.7 matthew 276: $Str .= &Apache::lonhtmlcommon::breadcrumbs
1.8 matthew 277: (undef,'Correct Problems Plot');
1.1 matthew 278: $Str .= '<table cellspacing="5">'."\n";
279: $Str .= '<tr>';
280: $Str .= '<td align="center"><b>'.&mt('Sections').'</b></td>';
281: $Str .= '<td align="center"><b>'.&mt('Enrollment Status').'</b></td>';
282: $Str .= '<td align="center"><b>'.&mt('Sequences and Folders').'</b></td>';
1.9 ! matthew 283: $Str .= '<td rowspan="2">'.
! 284: &Apache::lonstathelpers::limit_by_time_form().'</td>';
1.1 matthew 285: $Str .= '</tr>'."\n";
286: ##
287: ##
288: $Str .= '<tr><td align="center">'."\n";
289: $Str .= &Apache::lonstatistics::SectionSelect('Section','multiple',5);
290: $Str .= '</td>';
291: #
292: $Str .= '<td align="center">';
293: $Str .= &Apache::lonhtmlcommon::StatusOptions(undef,undef,5);
294: $Str .= '</td><td>'."\n";
295: #
296: my $only_seq_with_assessments = sub {
297: my $s=shift;
298: if ($s->{'num_assess'} < 1) {
299: return 0;
300: } else {
301: return 1;
302: }
303: };
304: $Str .= &Apache::lonstatistics::MapSelect('Maps','multiple,all',5,
305: $only_seq_with_assessments);
1.9 ! matthew 306: $Str .= '</td>';
! 307: #
1.1 matthew 308: ##
309: $Str .= '</tr>'."\n";
310: $Str .= '</table>'."\n";
311: return $Str;
312: }
313:
314: 1;
315:
316: __END__
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