1: # The LearningOnline Network with CAPA
2: #
3: # $Id: lonsubmissiontimeanalysis.pm,v 1.23 2005/04/07 06:56:24 albertel Exp $
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::lonsubmissiontimeanalysis;
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: use HTML::Entities();
39: use Time::Local();
40:
41: my $plotcolors = ['#33ff00',
42: '#ff33cc', '#990000', '#aaaa66', '#663399', '#ff9933',
43: '#66ccff', '#ff9999', '#cccc33', '#660000', '#33cc66',
44: ];
45:
46: my @SubmitButtons = (
47: { name => 'PrevProblemAnalysis',
48: text => 'Previous Problem' },
49: { name => 'ProblemAnalysis',
50: text => 'Analyze Problem Again' },
51: { name => 'NextProblemAnalysis',
52: text => 'Next Problem' },
53: { name => 'SelectAnother',
54: text => 'Choose a different Problem' },
55: );
56:
57: sub BuildSubmissionTimePage {
58: my ($r,$c)=@_;
59: #
60: my %Saveable_Parameters = ('Status' => 'scalar',
61: 'Section' => 'array');
62: &Apache::loncommon::store_course_settings('submissiontime_analysis',
63: \%Saveable_Parameters);
64: &Apache::loncommon::restore_course_settings('submissiontime_analysis',
65: \%Saveable_Parameters);
66: #
67: &Apache::lonstatistics::PrepareClasslist();
68: #
69: $r->print(&CreateInterface());
70: #
71: my @Students = @Apache::lonstatistics::Students;
72: #
73: if (@Students < 1) {
74: $r->print('<h2>There are no students in the sections selected</h2>');
75: }
76: #
77: my @CacheButtonHTML =
78: &Apache::lonstathelpers::manage_caches($r,'Statistics','stats_status');
79: $r->rflush();
80: #
81: if (! exists($env{'form.problemchoice'}) ||
82: exists($env{'form.SelectAnother'})) {
83: $r->print('<input type="submit" name="" value="'.
84: &mt('Graph Problem Submission Times').'" />');
85: $r->print(' 'x5);
86: $r->print('<h3>'.&mt('Please select a problem to analyze').'</h3>');
87: $r->print(&Apache::lonstathelpers::problem_selector('.'));
88: } else {
89: foreach my $button (@SubmitButtons) {
90: $r->print('<input type="submit" name="'.$button->{'name'}.'" '.
91: 'value="'.&mt($button->{'text'}).'" />');
92: $r->print(' 'x5);
93: }
94: foreach my $html (@CacheButtonHTML) {
95: $r->print($html.(' 'x5));
96: }
97: $r->rflush();
98: #
99: # Determine which problem we are to analyze
100: my $current_problem = &Apache::lonstathelpers::get_target_from_id
101: ($env{'form.problemchoice'});
102: #
103: my ($navmap,$prev,$curr,$next) =
104: &Apache::lonstathelpers::get_prev_curr_next($current_problem,
105: '.',
106: 'part');
107: if (exists($env{'form.PrevProblemAnalysis'}) && defined($prev)) {
108: $current_problem = $prev;
109: } elsif (exists($env{'form.NextProblemAnalysis'}) && defined($next)) {
110: $current_problem = $next;
111: } else {
112: $current_problem = $curr;
113: }
114: #
115: # Store the current problem choice and send it out in the form
116: $env{'form.problemchoice'} =
117: &Apache::lonstathelpers::make_target_id($current_problem);
118: $r->print('<input type="hidden" name="problemchoice" value="'.
119: $env{'form.problemchoice'}.'" />');
120: #
121: $r->print('<hr />');
122: $r->rflush();
123: #
124: my $resource = $current_problem->{'resource'};
125: if (! defined($resource)) {
126: $r->print('resource is undefined');
127: } else {
128: $r->print('<h1>'.$resource->compTitle.'</h1>');
129: $r->print('<h3>'.$resource->src.'</h3>');
130: $r->print('<h4>'.
131: &Apache::lonstatistics::section_and_enrollment_description().
132: '</h4>');
133: $r->rflush();
134: $r->print(&Apache::lonstathelpers::render_resource($resource));
135: $r->print('<br />');
136: $r->rflush();
137: $r->print(&analyze_times($r,$resource->symb,\@Students,
138: $current_problem->{'part'}));
139: }
140: $r->print('<hr />');
141: }
142: }
143:
144: #########################################################
145: #########################################################
146: ##
147: ## Time Analysis
148: ##
149: #########################################################
150: #########################################################
151: sub get_week_start {
152: my ($randomtime) = @_;
153: my ($sec,$min,$hour,$mday,$month,$year,$wday,$yday,$isdst) =
154: localtime($randomtime);
155: $randomtime -= $wday * 86400;
156: ($sec,$min,$hour,$mday,$month,$year,$wday,$yday,$isdst) =
157: localtime($randomtime);
158: my $week_start = &Time::Local::timelocal(0,0,0,$mday,$month,$year);
159: return $week_start;
160: }
161:
162: sub analyze_times {
163: my ($r,$symb,$students,$part) = @_;
164: my $htmltable;
165: #
166: # Convenience arrays
167: my @FullWeekDay = (qw/Sunday Monday Tuesday Wednesday Thursday Friday
168: Saturday/);
169: my @WeekDay = (qw/SUN MON TUE WED THU FRI SAT SUN/);
170: my @Month = (qw/Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec/);
171: #
172: my $html; # holds results of analysis
173: # Get the data
174: my $SubData = &Apache::loncoursedata::get_response_time_data
175: ([&Apache::lonstatistics::get_selected_sections()],
176: $Apache::lonstatistics::enrollment_status,
177: $symb,$part);
178: if (! defined($SubData) || ! ref($SubData)) {
179: $html.= '<h2>There is no submission data for this problem at all</h2>';
180: return $html;
181: }
182: my $NumSub = scalar(@{$SubData});
183: if (! @{$SubData}) {
184: $html.= '<h2>There is no submission data for this problem</h2>';
185: return $html;
186: }
187: # Process the data
188: #
189: my (undef,undef,undef,$mday,$month,$year,$wday,$yday,$isdst) =
190: localtime(&get_time_from_row($SubData->[0]));
191: my $day_start = &Time::Local::timelocal(0,0,0,$mday,$month,$year);
192: #
193: # Configure the bins used to store the data.
194: my $binsize = 3600; # seconds
195: my $bins_per_day = 86400/$binsize;
196: my $bincount = 0;
197: my $endtime = $day_start;
198: #
199: # Initialize loop variables
200: my $max; # The sum of @Ydata
201: my @Ydata=(0); # number of submissions
202: my @AnsData=(0); # number of correct submissions
203: my @Xlabel=($WeekDay[$wday]); # Labels of itmes
204: my @BinEnd; # The end time of each bin
205: my $cumulative_answers = 0; # The sum of @AnsData
206: my %students; # which students have attempted the problem?
207: #
208: foreach my $row (@$SubData) {
209: my $subtime = &get_time_from_row($row);
210: while ($subtime > $endtime && $endtime < time) {
211: # Create a new bin
212: $bincount++;
213: $Ydata[$bincount] = 0;
214: $AnsData[$bincount] = 0;
215: $endtime += $binsize;
216: push(@BinEnd,$endtime);
217: if ($bincount % (86400/$binsize) == 0) {
218: $wday++;
219: $wday %= 7;
220: $Xlabel[$bincount] = $WeekDay[$wday];
221: } else {
222: $Xlabel[$bincount] = '';
223: }
224: }
225: $Ydata[$bincount]++;
226: $max = $Ydata[$bincount] if ($max < $Ydata[$bincount]);
227: $AnsData[$bincount] += &successful_submission($row);
228: $cumulative_answers += &successful_submission($row);
229: $students{$row->[&Apache::loncoursedata::RT_student_id()]}++;
230: }
231: #
232: # Pad the data to a full day
233: while ($bincount % $bins_per_day != 0) {
234: $bincount++;
235: $Ydata[$bincount]=0;
236: $AnsData[$bincount]=0;
237: $endtime += $binsize;
238: push(@BinEnd,$endtime);
239: if ($bincount % (86400/$binsize) == 0) {
240: $wday ++;
241: $wday %= 7;
242: $Xlabel[$bincount] = $WeekDay[$wday];
243: } else {
244: $Xlabel[$bincount] = '';
245: }
246: }
247: my $numstudents = scalar(keys(%students));
248: #
249: # Determine a nice maximum value to use
250: foreach my $maximum (10,15,20,25,30,40,50,60,70,80,90,100,
251: 120,150,200,250,300,350,400,450,500,
252: 600,700,800,900,1000,1100,1200,1500,2000,
253: 2500,3000,4000,5000) {
254: if ($max < $maximum) {
255: $max = $maximum;
256: last;
257: }
258: }
259: #
260: # Build the data table
261: $htmltable = '<p>'.
262: '<table rules="groups" frame="border" '.
263: 'summary="Student submission data">'.
264: '<thead>'.
265: '<tr>'.
266: '<th valign="bottom">'.&mt('Begin').'</th>'.
267: '<th>'.(' 'x3).'</th>'.
268: '<th valign="bottom">'.&mt('End').'</th>'.
269: '<th valign="bottom">'.&mt('Submissions (plotted)').'</th>'.
270: '<th>'.(' 'x3).'</th>'.
271: '<th valign="bottom">'.&mt('Correct Submissions (not plotted)').'</th>'.
272: '<th>'.(' 'x3).'</th>'.
273: '<th valign="bottom">'.&mt('Cumulative Correct of those attempting the problem (not plotted)').'</th>'.
274: '<th>'.(' 'x3).'</th>'.
275: '<th valign="bottom">'.&mt('Cumulative Percent Correct of those attempting the problem (not plotted)').'</th>'.
276: '<th>'.(' 'x3).'</th>'.
277: '<th valign="bottom">'.&mt('Cumulative Percent Correct of selected students (plotted)').'</th>'.
278: '</tr>'.
279: '</thead>'.
280: '<tbody>';
281: my @CumulativeCorrect=(0);
282: my @corr_as_percent_of_selected;
283: my @corr_as_percent_of_answering;
284: for (my $i=0;$i<=$#Ydata;$i++) {
285: $CumulativeCorrect[$i]=$CumulativeCorrect[-1]+$AnsData[$i];
286: $corr_as_percent_of_answering[$i] =
287: sprintf('%3.1f',100*$CumulativeCorrect[$i]/$numstudents);
288: $corr_as_percent_of_selected[$i] =
289: sprintf('%3.1f',100*$CumulativeCorrect[$i]/scalar(@$students));
290: if ($Ydata[$i] != 0) {
291: next if (! defined($BinEnd[$i]) || $BinEnd[$i] == 0);
292: $htmltable .=
293: '<tr>'.
294: '<td align="right"><nobr>'.
295: &Apache::lonlocal::locallocaltime($BinEnd[$i]-$binsize).
296: '</nobr></td>'.
297: '<td> </td>'.
298: '<td align="right"><nobr>'.
299: &Apache::lonlocal::locallocaltime($BinEnd[$i]).'</td>'.
300: '</nobr></td>'.
301: '<td align="right">'.$Ydata[$i].(' 'x3).'</td>'.
302: '<td> </td>'.
303: '<td align="right">'.$AnsData[$i].(' 'x3).'</td>'.
304: '<td> </td>'.
305: '<td align="right">'.$CumulativeCorrect[$i].'</td>'.
306: '<td> </td>'.
307: '<td align="right">'.$corr_as_percent_of_answering[$i].'</td>'.
308: '<td> </td>'.
309: '<td align="right">'.$corr_as_percent_of_selected[$i].'</td>'.
310: '</tr>'.$/;
311: }
312: }
313: $htmltable .= '</tbody></table></p>';
314: #
315: # Build the plot
316: my $title = '';#'Number of Submissions and Number Correct';
317: my $xlabel;
318: (undef,undef,undef,$mday,$month,$year,$wday) = localtime($day_start);
319: $xlabel .= $FullWeekDay[$wday].' '.
320: join(' ',($Month[$month],$mday,1900+$year)).' - ';
321: (undef,undef,undef,$mday,$month,$year,$wday) = localtime($endtime);
322: $xlabel .= $FullWeekDay[$wday].' '.
323: join(' ',($Month[$month],$mday,1900+$year));
324: my $width = 50+2*$bincount;
325: if ($width < 250) {
326: $width = 250;
327: }
328: #
329: $html .= &Apache::loncommon::DrawXYYGraph($title,
330: $xlabel,
331: 'Submissions vs Time',
332: $plotcolors,
333: \@Xlabel,
334: \@Ydata,0,$max,
335: \@corr_as_percent_of_selected,0,100,
336: (xskip => $bins_per_day,
337: x_ticks => $bins_per_day,
338: x_tick_offset => $bins_per_day,
339: width => $width,
340: y1_label=>'Number of Submissions per hour',
341: y2_label=>'Percent of Students answering Correctly',
342: 'data.1.label'=>'Submissions per hour',
343: 'data.2.label'=>'Percent correct',
344: )
345: );
346: $html .= '<br />'.$htmltable;
347: return $html;
348: }
349:
350: sub successful_submission {
351: my ($row) = @_;
352: if (ref($row) eq 'ARRAY') {
353: return $row->[&Apache::loncoursedata::RT_awarded()];
354: }
355: return undef;
356: }
357:
358: sub get_time_from_row {
359: my ($row) = @_;
360: if (ref($row) eq 'ARRAY') {
361: return $row->[&Apache::loncoursedata::RT_timestamp()];
362: }
363: return undef;
364: }
365:
366: sub get_tries_from_row {
367: my ($row) = @_;
368: if (ref($row) eq 'ARRAY') {
369: return $row->[&Apache::loncoursedata::RT_tries()];
370: }
371: return undef;
372: }
373:
374: sub Process_Row {
375: my ($row) = @_;
376: my %RowData;
377: my ($student_id,$award,$tries,$time) = @$row;
378: return %RowData;
379: }
380:
381: #########################################################
382: #########################################################
383: ##
384: ## Generic Interface Routines
385: ##
386: #########################################################
387: #########################################################
388: sub CreateInterface {
389: ##
390: ## Environment variable initialization
391: if (! exists$env{'form.AnalyzeOver'}) {
392: $env{'form.AnalyzeOver'} = 'Tries';
393: }
394: ##
395: ## Build the menu
396: my $Str = '';
397: $Str .= &Apache::lonhtmlcommon::breadcrumbs(undef,'Submission Time Plots');
398: $Str .= '<p>';
399: $Str .= '<table cellspacing="5">'."\n";
400: $Str .= '<tr>';
401: $Str .= '<th align="center">'.&mt('Sections').'</th>';
402: $Str .= '<th align="center">'.&mt('Enrollment Status').'</th>';
403: $Str .= '</tr>'."\n";
404: ##
405: ##
406: $Str .= '<tr><td align="center">'."\n";
407: $Str .= &Apache::lonstatistics::SectionSelect('Section','multiple',4);
408: $Str .= '</td>';
409: #
410: $Str .= '<td align="center">';
411: $Str .= &Apache::lonhtmlcommon::StatusOptions(undef,undef,4);
412: $Str .= '</td>';
413: #
414: $Str .= '</tr>'."\n";
415: $Str .= '</table>'."\n";
416: #
417: $Str .= '<nobr>'.&mt('Status: [_1]',
418: '<input type="text" '.
419: 'name="stats_status" size="60" value="" />').
420: '</nobr>'.'</p>';
421: ##
422: return $Str;
423: }
424:
425: 1;
426:
427: __END__
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