1: # The LearningOnline Network with CAPA
2: # (Publication Handler
3: #
4: # $Id: lonstatistics.pm,v 1.6 2002/03/02 23:22:32 minaeibi Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: # (Navigate problems for statistical reports
29: # YEAR=2001
30: # 5/05,7/09,7/25/01,8/11,9/13,9/26,10/5,10/9,10/22,10/26 Behrouz Minaei
31: # 11/1, 11/4, 11/16, 12/14, 12/16, 12/18,12/20,12/31 Behrouz Minaei
32: # YEAR=2002
33: # 1/22, 2/1, 2/6, 2/25, 3/2 Behrouz Minaei
34: ###
35:
36: package Apache::lonstatistics;
37:
38: use strict;
39: use Apache::Constants qw(:common :http);
40: use Apache::lonnet();
41: use Apache::lonhomework;
42: use HTML::TokeParser;
43: use GDBM_File;
44: #use Benchmark;
45:
46: # -------------------------------------------------------------- Module Globals
47: my %hash;
48: my %CachData;
49: my %GraphDat;
50: my %maps;
51: my %mapsort;
52: my %section;
53: my %StuBox;
54: my %DiscFac;
55: my $CurMap;
56: my $CurSec;
57: my $CurStu;
58: my @cols;
59: my @list;
60: my @students;
61: my $p_count;
62: my $Pos;
63: my $r;
64: my $OpSel1;
65: my $OpSel2;
66: my $OpSelDis1;
67: my $OpSelDis2;
68: my $CurDis=0;
69: my $OpSel3;
70: my $OpSel4;
71: my $GData;
72: my $cid;
73: my $firstres;
74: my $lastres;
75: my $DiscFlag;
76: my $HWN;
77: my $P_Order;
78: my %Header = (0,"Homework Sets Order",1,"#Stdnts",2,"Tries",3,"Mod",
79: 4,"Mean",5,"#YES",6,"#yes",7,"%Wrng",8,"DoDiff",
80: 9,"S.D.",10,"Skew.",11,"Map");
81: # 11,"Dis.F.",12,"Resourse URL");
82:
83: sub NumericSort {
84: $a <=> $b;
85: }
86:
87: # ------ Create different Student Report
88: sub StudentReport {
89: my ($sname,$sdom)=@_;
90: if ( $sname eq 'All Students' ) {
91: $r->print( '<h3><font color=blue>WARNING:
92: Please select a student</font></h3>' );
93: return;
94: }
95: my $shome=&Apache::lonnet::homeserver( $sname,$sdom );
96: my $reply=&Apache::lonnet::reply('dump:'.$sdom.':'.$sname.':'.$cid,$shome );
97: my %result = ();
98: my $ResId;
99: my $PrOrd;
100: my $Code;
101: my $Tries;
102: my $TotalTries = 0;
103: my $ParCr = 0;
104: my $Wrongs;
105: my %TempHash;
106: my $Version;
107: my $LatestVersion;
108: my $PtrTry='';
109: my $PtrCod='';
110: my $SetNo=0;
111: my $Str = "\n".'<table border=2>'.
112: "\n".'<tr>'.
113: "\n".'<th> # </th>'.
114: "\n".'<th> Set Title </th>'.
115: "\n".'<th> Results </th>'.
116: "\n".'<th> Tries </th>'.
117: "\n".'</tr>';
118: unless ($reply=~/^error\:/) {
119: foreach (split(/\&/,$reply)){
120: my ($name,$value)=split(/\=/,&Apache::lonnet::unescape($_));
121: $result{$name}=$value;
122: }
123: foreach my $CurCol (@cols) {
124: if (!$CurCol){
125: my $Set=&Apache::lonnet::declutter($hash{'map_id_'.$1});
126: if ( $Set ) {
127: $SetNo++;
128: $Str .= "\n"."<tr>".
129: "\n"."<td> $SetNo </td>".
130: "\n"."<td> $Set </td>".
131: "\n"."<td> $PtrCod </td>".
132: "\n"."<td> $PtrTry</td>".
133: "\n"."</tr>";
134: }
135: $PtrTry='';
136: $PtrCod='';
137: next;
138: }
139: ($PrOrd,$ResId)=split(/\:/,$CurCol);
140: $ResId=~/(\d+)\.(\d+)/;
141: my $Map = &Apache::lonnet::declutter( $hash{'map_id_'.$1} );
142: if ( $CurMap ne 'All Maps' ) {
143: my ( $ResMap, $NameMap ) = split(/\=/,$CurMap);
144: if ( $Map ne $ResMap ) { next; }
145: }
146: my $meta=$hash{'src_'.$ResId};
147: my $PartNo = 0;
148: undef %TempHash;
149: foreach (split(/\,/,&Apache::lonnet::metadata($meta,'keys'))){
150: if ($_=~/^stores\_(\d+)\_tries$/) {
151: my $Part=&Apache::lonnet::metadata($meta,$_.'.part');
152: if ( $TempHash{"$Part"} eq '' ) {
153: $TempHash{"$Part"} = $Part;
154: $TempHash{$PartNo}=$Part;
155: $TempHash{"$Part.Code"} = '-';
156: $TempHash{"$Part.PrOrd"} = $PrOrd+$PartNo;
157: $PartNo++;
158: }
159: }
160: }
161:
162: my $Prob = $Map.'___'.$2.'___'.
163: &Apache::lonnet::declutter( $hash{'src_'.$ResId} );
164: $Code='U';
165: $Tries = 0;
166: $Wrongs = 0;
167: $LatestVersion = $result{"version:$Prob"};
168:
169: if ( $LatestVersion ) {
170: for ( my $Version=1; $Version<=$LatestVersion; $Version++ ) {
171: my $vkeys = $result{"$Version:keys:$Prob"};
172: my @keys = split(/\:/,$vkeys);
173:
174: foreach my $Key (@keys) {
175: if (($Key=~/\.(\w+)\.solved$/) && ($Key!~/^\d+\:/)) {
176: my $Part = $1;
177: $Tries = $result{"$Version:$Prob:resource.$Part.tries"};
178: $TempHash{"$Part.Tries"} = ($Tries) ? $Tries : 0;
179: $TotalTries += $Tries;
180: my $Val = $result{"$Version:$Prob:resource.$Part.solved"};
181: if ( $Val eq 'correct_by_student' )
182: { $Wrongs = $Tries - 1; $Code = 'Y'; }
183: elsif ( $Val eq 'correct_by_override' )
184: { $Wrongs = $Tries - 1; $Code = 'y'; }
185: elsif ( $Val eq 'incorrect_attempted' ||
186: $Val eq 'incorrect_by_override' )
187: { $Wrongs = $Tries; $Code = 'N'; }
188: $TempHash{"$Part.Code"} = $Code;
189: $TempHash{"$Part.Wrongs"} = $Wrongs;
190: }
191: }
192: }
193: for ( my $n = 0; $n < $PartNo; $n++ ) {
194: my $part = $TempHash{$n};
195: if ($PtrTry ne '') {$PtrTry .= ',';}
196: $PtrTry .= "$TempHash{$part.'.Tries'}";
197: $PtrCod .= "$TempHash{$part.'.Code'}";
198: }
199: }
200: else {
201: for(my $n=0; $n<$PartNo; $n++) {
202: if ($PtrTry ne '') {$PtrTry .= ',';}
203: $PtrTry .= "0";
204: $PtrCod .= "-";
205: }
206: }
207: }
208: }
209: $Str .= "\n".'</table>';
210: $r->print($Str);
211: $r->rflush();
212: }
213:
214: sub CreateTable {
215: my ($Hd, $Hid)=@_;
216: if ( $Hd == 1 ) {
217: # $Hid=~/(\d+)\.(\d+)/;
218: $r->print('<br><a href="'.$hash{'src_'.$Hid}.
219: '" target="_blank">'.$hash{'title_'.$Hid}.'</a>'
220: # .' ('.&Apache::lonnet::declutter($hash{'map_id_'.$1}).')'
221: );
222: }
223: my $Result = "\n".'<table border=2>';
224: $Result .= '<tr><th>P#</th>'."\n";
225: for ( my $nIdx=0; $nIdx < 11; $nIdx++ ) {
226: $Result .= '<th>'.'<input type="submit" name="sort" value="'.
227: $Header{$nIdx}.'" />'.'</th>'."\n";
228: }
229: $Result .= "\n".'</tr>'."\n";
230: $r->print( $Result );
231: $r->rflush();
232: }
233:
234: sub CloseTable {
235: $r->print("\n".'</table>'."\n");
236: $r->rflush();
237: }
238:
239: # ------------------------------------------- Prepare Statistics Table
240: sub PreStatTable {
241: my $CacheDB = "/home/httpd/perl/tmp/$ENV{'user.name'}".
242: "_$ENV{'user.domain'}_$cid\_statistics.db";
243: my $GraphDB = "/home/httpd/perl/tmp/$ENV{'user.name'}".
244: "_$ENV{'user.domain'}_$cid\_graph.db";
245: my $CachDisFac = "/home/httpd/perl/tmp/$ENV{'user.name'}".
246: "_$ENV{'user.domain'}_$cid\_DiscFactor.db";
247: my $OpSel11='';
248: my $OpSel12='';
249: my $OpSel13='';
250: my $Status = $ENV{'form.status'};
251: if ( $Status eq 'Any' ) { $OpSel13='selected'; }
252: elsif ($Status eq 'Expired' ) { $OpSel12 = 'selected'; }
253: else { $OpSel11 = 'selected'; }
254:
255: my $Ptr = '';
256: $Ptr .= '<br><b> Student Status: </b>'."\n".
257: '<select name="status">'.
258: '<option '.$OpSel11.' >Active</option>'."\n".
259: '<option '.$OpSel12.' >Expired</option>'."\n".
260: '<option '.$OpSel13.' >Any</option> </select> '."\n";
261: $Ptr .= ' ';
262: $Ptr .= '<input type=submit name=sort value="Recalculate Statistics"/>'."\n";
263:
264: $Ptr .= '<br><b> Sorting Type: </b>'."\n".
265: '<select name="order"> <option '.$OpSel1.' >Ascending</option>'."\n".
266: '<option '.$OpSel2.'>Descending</option> </select> '."\n";
267: $Ptr .= ' ';
268: $Ptr .= '<input type="submit" name="sort" value="DoDiff Graph" />'."\n";
269: $Ptr .= ' ';
270: $Ptr .= '<input type="submit" name="sort" value="%Wrong Graph" />'."\n";
271:
272: $Ptr .= '<pre>'.
273: ' #Stdnts: Total Number of Students opened the problem.<br>'.
274: ' Tries : Total Number of Tries for solving the problem.<br>'.
275: ' Mod : Maximunm Number of Tries for solving the problem.<br>'.
276: ' Mean : Average Number of the tries. [ Tries / #Stdnts ]<br>'.
277: ' #YES : Number of students solved the problem correctly.<br>'.
278: ' #yes : Number of students solved the problem by override.<br>'.
279: ' %Wrng : Percentage of students tried to solve the problem but'.
280: ' still incorrect. [ 100*((#Stdnts-(#YES+#yes))/#Stdnts) ]<br>'.
281: # ' DoDiff : Degree of Difficulty of the problem. [ Tries/(#YES+#yes+0.1) ]<br>'.
282: ' DoDiff : Degree of Difficulty of the problem. [ 1 - ((#YES+#yes) / Tries) ]<br>'.
283: ' S.D. : Standard Deviation of the tries.'.
284: '[ sqrt(sum((Xi - Mean)^2)) / (#Stdnts-1)'.
285: ' where Xi denotes every student\'s tries ]<br>'.
286: ' Skew. : Skewness of the students tries.'.
287: ' [ (sqrt( sum((Xi - Mean)^3) / #Stdnts)) / (S.D.^3) ]<br>'.
288:
289: # ' Dis.F. : Discrimination Factor. [ Sum of Partial Credits Awarded / Total Number of Tries in %27 upper and lower students]</b>'.
290: '</pre>';
291:
292: $r->print($Ptr);
293: $r->rflush();
294:
295: if ((-e "$CacheDB")&&($ENV{'form.sort'} ne 'Recalculate Statistics')) {
296: if (tie(%CachData,'GDBM_File',"$CacheDB",&GDBM_READER,0640)) {
297: tie(%GraphDat,'GDBM_File',$GraphDB,&GDBM_WRCREAT,0640);
298: &Cache_Statistics();
299: }
300: else {
301: $r->print("Unable to tie hash to db file");
302: }
303: }
304: else {
305: if (tie(%CachData,'GDBM_File',$CacheDB,&GDBM_WRCREAT,0640)) {
306: tie(%DiscFac,'GDBM_File',$CachDisFac,&GDBM_WRCREAT,0640);
307: tie(%GraphDat,'GDBM_File',$GraphDB,&GDBM_WRCREAT,0640);
308: foreach (keys %DiscFac) {delete $CachData{$_};}
309: foreach (keys %CachData) {delete $CachData{$_};}
310: $DiscFlag=0;
311: &Build_Statistics();
312: }
313: else {
314: $r->print("Unable to tie hash to db file");
315: }
316: }
317: #$r->print('Total instances of the problems : '.($p_count*($#students+1)));
318:
319: untie(%CachData);
320: untie(%GraphDat);
321: untie(%DiscFac);
322: }
323:
324:
325: # ------------------------------------- Find the section of student in a course
326:
327: sub usection {
328: my ($udom,$unam,$courseid,$ActiveFlag)=@_;
329: $courseid=~s/\_/\//g;
330: $courseid=~s/^(\w)/\/$1/;
331: foreach (split(/\&/,&Apache::lonnet::reply('dump:'.
332: $udom.':'.$unam.':roles',
333: &Apache::lonnet::homeserver($unam,$udom)))){
334: my ($key,$value)=split(/\=/,$_);
335: $key=&Apache::lonnet::unescape($key);
336: if ($key=~/^$courseid(?:\/)*(\w+)*\_st$/) {
337: my $section=$1;
338: if ($key eq $courseid.'_st') { $section=''; }
339: my ($dummy,$end,$start)=split(/\_/,&Apache::lonnet::unescape($value));
340: if ( $ActiveFlag ne 'Any' ) {
341: my $now=time;
342: my $notactive=0;
343: if ($start) {
344: if ($now<$start) { $notactive=1; }
345: }
346: if ($end) {
347: if ($now>$end) { $notactive=1; }
348: }
349: if ((($ActiveFlag eq 'Expired') && $notactive == 1) ||
350: (($ActiveFlag eq 'Active') && $notactive == 0 ) ) {
351: return $section;
352: }
353: else { return '-1'; }
354: }
355: return $section;
356: }
357: }
358: return '-1';
359: }
360:
361:
362: # ------ Dump the Student's DB file and handling the data for statistics table
363:
364: sub ExtractStudentData {
365: my ($student,$coid)=@_;
366: my ($sname,$sdom) = split( /\:/, $student );
367: my $shome=&Apache::lonnet::homeserver( $sname,$sdom );
368: my $reply=&Apache::lonnet::reply('dump:'.$sdom.':'.$sname.':'.$coid,$shome );
369: my %result = ();
370: my $ResId;
371: my $PrOrd;
372: my $Dis = '';
373: my $Code;
374: my $Tries;
375: my $ParCr;
376: my $TotalTries = 0;
377: my $TotalOpend = 0;
378: my $ProbSolved = 0;
379: my $ProbTot = 0;
380: my $TimeTot = 0;
381: my $TotParCr = 0;
382: my $Wrongs;
383: my %TempHash;
384: my $Version;
385: my $LatestVersion;
386: my $SecLimit;
387: my $MapLimit;
388: unless ($reply=~/^error\:/) {
389: foreach (split(/\&/,$reply)) {
390: my ($name,$value)=split(/\=/,&Apache::lonnet::unescape($_));
391: $result{$name}=$value;
392: }
393: foreach my $CurCol(@cols) {
394: ($PrOrd,$ResId)=split(/\:/,$CurCol);
395: if ( !$CurCol ) { next; }
396: $ResId=~/(\d+)\.(\d+)/;
397: my $MapId=$1;
398: my $PrbId=$2;
399: my $Map = &Apache::lonnet::declutter( $hash{'map_id_'.$MapId} );
400: if ( $CurMap ne 'All Maps' ) {
401: my ( $ResMap, $NameMap ) = split(/\=/,$CurMap);
402: if ( $Map ne $ResMap ) { next; }
403: }
404: my $meta=$hash{'src_'.$ResId};
405: my $PartNo = 0;
406: $Dis .= ':';
407: undef %TempHash;
408: foreach (split(/\,/,&Apache::lonnet::metadata($meta,'keys'))) {
409: if ($_=~/^stores\_(\d+)\_tries$/) {
410: my $Part=&Apache::lonnet::metadata($meta,$_.'.part');
411: if ( $TempHash{"$Part"} eq '' ) {
412: $TempHash{"$Part"} = $Part;
413: $TempHash{$PartNo}=$Part;
414: $TempHash{"$Part.Code"} = 'U';
415: $TempHash{"$Part.PrOrd"} = $PrOrd+$PartNo;
416: $PartNo++;
417: }
418: }
419: }
420:
421: my $Prob = $Map.'___'.$PrbId.'___'.
422: &Apache::lonnet::declutter( $hash{'src_'.$ResId} );
423: $Code='U';
424: $Tries = 0;
425: $ParCr = 0;
426: $Wrongs = 0;
427: $LatestVersion = $result{"version:$Prob"};
428:
429: if ( $LatestVersion ) {
430: for ( my $Version=1; $Version<=$LatestVersion; $Version++ ) {
431: my $vkeys = $result{"$Version:keys:$Prob"};
432: my @keys = split(/\:/,$vkeys);
433:
434: foreach my $Key (@keys) {
435: if (($Key=~/\.(\w+)\.solved$/) && ($Key!~/^\d+\:/)) {
436: my $Part = $1;
437: $Tries = $result{"$Version:$Prob:resource.$Part.tries"};
438: $ParCr = $result{"$Version:$Prob:resource.$Part.awarded"};
439: my $Time = $result{"$Version:$Prob:timestamp"};
440: $TempHash{"$Part.Time"} = ($Time) ? $Time : 0;
441: $TempHash{"$Part.Tries"} = ($Tries) ? $Tries : 0;
442: $TempHash{"$Part.ParCr"} = ($ParCr) ? $ParCr : 0;
443: $TotalTries += $TempHash{"$Part.Tries"};
444: $TotParCr += $TempHash{"$Part.ParCr"};
445: #$r->print($Version.'---'.$Prob.'==='.$Time.'<br>');
446: my $Val = $result{"$Version:$Prob:resource.$Part.solved"};
447: if ( $Val eq 'correct_by_student' )
448: { $Wrongs = $Tries - 1; $Code = 'C'; }
449: elsif ( $Val eq 'correct_by_override' )
450: { $Wrongs = $Tries - 1; $Code = 'O'; }
451: elsif ( $Val eq 'incorrect_attempted' ||
452: $Val eq 'incorrect_by_override' )
453: { $Wrongs = $Tries; $Code = 'I'; }
454: $TempHash{"$Part.Code"} = $Code;
455: $TempHash{"$Part.Wrongs"} = $Wrongs;
456: }
457: }
458: }
459: for ( my $n = 0; $n < $PartNo; $n++ ) {
460: my $part = $TempHash{$n};
461: my $Yes = 0;
462: if ( $TempHash{$part.'.Code'} eq 'C' ||
463: $TempHash{$part.'.Code'} eq 'O' )
464: {$ProbSolved++;$Yes=1;}
465: # my $ptr = "$hash{'title_'.$ResId}";
466: my $ptr = $TempHash{$part.'.PrOrd'}.':'.$ResId;
467: if ( $PartNo > 1 ) {
468: $ptr .= "*(part $part)";
469: $Dis .= ':';
470: }
471: my $Fac = ($TempHash{"$part.Tries"}) ?
472: ($TempHash{"$part.ParCr"}/$TempHash{"$part.Tries"}) : 0;
473: my $DisF;
474: if ( $Fac > 0 && $Fac < 1 ) {
475: $DisF = sprintf( "%.4f", $Fac );
476: }
477: else {$DisF = $Fac;}
478: # $DisF .= '+'.$TempHash{"$part.Time"};
479: $TimeTot += $TempHash{"$part.Time"};
480: $Dis .= $ptr.'*'.$ResId.'='.$DisF.'+'.$Yes;
481: $ptr .= ":$TempHash{$part.'.Tries'}".
482: ":$TempHash{$part.'.Wrongs'}".
483: ":$TempHash{$part.'.Code'}";
484: push (@list, $ptr);
485: $TotalOpend++;
486: $ProbTot++;
487: }
488: }
489: #else {
490: #for(my $n=0; $n<$PartNo; $n++) {
491: # push (@list, "$hash{'title_'.$ResId}*$ResId:0:0:U");
492: # $ProbTot++;
493: #}
494: #}
495: }
496: if ( $TotalTries ) {
497: my $DisFac = ( $TotalTries ) ? ($TotParCr/$TotalTries) : 0;
498: # my $DisFactor = int(sprintf( "%.4f", $DisFac ) * 100);
499: my $DisFactor = sprintf( "%.4f", $DisFac );
500: my $time;
501: if ($ProbSolved){
502: $time = int(($TimeTot/$ProbSolved)-10000000);
503: }
504: $DiscFac{($DisFactor.':'.$sname.':'.$ProbTot.':'.$TotalOpend.':'.
505: $TotalTries.':'.$ProbSolved.':'.$time)}=$Dis;
506: #$r->print($DisFactor.$sname.'<br> --- Dis= '.$Dis.'<br>');
507: }
508: }
509: #$r->print($sname.' PrCr= '.$TotParCr.' Slvd= '.$ProbSolved.' Tries='.$TotalTries.'<br>');
510: }
511:
512:
513: # ------------------------------------------------------------ Build page table
514: sub tracetable {
515: my ($rid,$beenhere)=@_;
516: $rid=~/(\d+)\.(\d+)/;
517: $maps{&Apache::lonnet::declutter($hash{'map_id_'.$1})}='';#$hash{'title_'.$rid};
518: #$maps{$HWN}=$hash{'title_'.$rid};
519: unless ($beenhere=~/\&$rid\&/) {
520: $beenhere.=$rid.'&';
521: if (defined($hash{'is_map_'.$rid})) {
522: my $cmap=$hash{'map_type_'.$hash{'map_pc_'.$hash{'src_'.$rid}}};
523: if ( $cmap eq 'sequence' || $cmap eq 'page' ) {
524: $cols[$#cols+1]=0;
525: $P_Order++;
526: $HWN=$P_Order;
527: $mapsort{$HWN} = $rid.':';
528: #$maps{&Apache::lonnet::declutter($hash{'src_'.$rid})}=
529: # $hash{'title_'.$rid};
530: }
531: if ((defined($hash{'map_start_'.$hash{'src_'.$rid}})) &&
532: (defined($hash{'map_finish_'.$hash{'src_'.$rid}}))) {
533: my $frid=$hash{'map_finish_'.$hash{'src_'.$rid}};
534:
535: &tracetable($hash{'map_start_'.$hash{'src_'.$rid}},
536: '&'.$frid.'&');
537:
538: $cols[$#cols+1]=($P_Order+1).':'.$frid;
539:
540: my $meta=$hash{'src_'.$frid};
541: my $PartNo = 0;
542: if ($meta) {
543: if ($meta=~/\.(problem|exam|quiz|assess|survey|form)$/) {
544: foreach (split(/\,/,&Apache::lonnet::metadata($meta,'keys'))) {
545: if ($_=~/^stores\_(\d+)\_tries$/) {
546: &Apache::lonnet::metadata($meta,$_.'.part');
547: $P_Order++;
548: $mapsort{$HWN} .= '&'.$P_Order;
549: $PartNo++;
550: $r->print('<br>'.$PartNo.'---'.$P_Order);
551: }
552: }
553: }
554: }
555: }
556: } else {
557: $cols[$#cols+1]=($P_Order+1).':'.$rid;
558: my $meta=$hash{'src_'.$rid};
559: my $PartNo = 0;
560: if ($meta) {
561: if ($meta=~/\.(problem|exam|quiz|assess|survey|form)$/) {
562: foreach (split(/\,/,&Apache::lonnet::metadata($meta,'keys'))) {
563: if ($_=~/^stores\_(\d+)\_tries$/) {
564: &Apache::lonnet::metadata($meta,$_.'.part');
565: $P_Order++;
566: $mapsort{$HWN} .= '&'.$P_Order;
567: $PartNo++;
568: }
569: }
570: }
571: }
572: }
573: if (defined($hash{'to_'.$rid})) {
574: foreach (split(/\,/,$hash{'to_'.$rid})){
575: &tracetable($hash{'goesto_'.$_},$beenhere);
576: }
577: }
578: }
579: }
580:
581: sub MySort {
582: if ( $Pos > 0 ) {
583: if ($ENV{'form.order'} eq 'Descending') {$b <=> $a;}
584: else { $a <=> $b; }
585: }
586: else {
587: if ($ENV{'form.order'} eq 'Descending') {$b cmp $a;}
588: else { $a cmp $b; }
589: }
590: }
591:
592: sub Build_Statistics {
593: $r->print(<<ENDPOP);
594: <script>
595: popwin=open('','popwin','width=400,height=100');
596: popwin.document.writeln('<html><body bgcolor="#88CC88">'+
597: '<title>LON-CAPA Statistics</title>'+
598: '<h4>Computation Progress</h4>'+
599: '<form name=popremain>'+
600: '<input type=text size=35 name=remaining value=Starting></form>'+
601: '</body></html>');
602: popwin.document.close();
603: </script>
604: ENDPOP
605:
606: $r->rflush();
607: # ---------------------------- Gathering the Data of students' tries
608: my $index;
609: for ($index=0;$index<=$#students;$index++) {
610: #----------- update progress
611: $r->print('<script>popwin.document.popremain.remaining.value="'.
612: 'Computing '.($index+1).'/'.($#students+1).': '.
613: $students[$index].'";</script>');
614: $r->rflush();
615:
616: &ExtractStudentData($students[$index],$cid);
617: }
618: #--------------------- close Progress Line
619: $r->print('<script>popwin.close()</script>');
620: $r->rflush();
621: # -------------------- sorting the Data
622: @list = sort (@list);
623:
624: $OpSel2='';
625: $OpSel1='selected';
626:
627: $p_count = 0;
628: my $nIdx = 0;
629: my $dummy;
630: my $p_val;
631: my $ResId;
632: my $NoElements = $#list + 1;
633: #-------------------------------- loop for data representation
634: foreach (sort keys %mapsort) {
635: my ($Hid,$pr)=split(/\:/,$mapsort{$_});
636: my @lpr=split(/\&/,$pr);
637: &CreateTable(1,$Hid);
638: for (my $i=1; $i<=$#lpr; $i++) {
639: my %storestats=();
640: my ($PrOrd,$Prob,$Tries,$Wrongs,$Code)=split(/\:/,$list[$nIdx]);
641: my $Temp = $Prob;
642: my $MxTries = 0;
643: my $TotalTries = 0;
644: my $YES = 0;
645: my $Incorrect = 0;
646: my $Override = 0;
647: my $StdNo = 0;
648: my @StdLst;
649: while ( $PrOrd == $lpr[$i] )
650: {
651: $nIdx++;
652: $StdNo++;
653: $StdLst[ $StdNo ] = $Tries;
654: $TotalTries += $Tries;
655: if ( $MxTries < $Tries ) { $MxTries = $Tries; }
656: if ( $Code eq 'C' ){ $YES++; }
657: elsif( $Code eq 'I' ) { $Incorrect++; }
658: elsif( $Code eq 'O' ) { $Override++; }
659: elsif( $Code eq 'U' ) { $StdNo--; }
660: ($PrOrd,$Prob,$Tries,$Wrongs,$Code)=split(/\:/,$list[$nIdx]);
661: }
662:
663: $p_count++;
664: my $Dummy;
665: ($ResId,$Dummy)=split(/\*/,$Temp);
666:
667: $Temp = '<a href="'.$hash{'src_'.$ResId}.
668: '" target="_blank">'.$hash{'title_'.$ResId}.$Dummy.'</a>';
669:
670: my $res = &Apache::lonnet::declutter($hash{'src_'.$ResId});
671: my $urlres=$res;
672:
673: $ResId=~/(\d+)\.(\d+)/;
674: my $Map = &Apache::lonnet::declutter( $hash{'map_id_'.$1} );
675: $urlres=$Map;
676:
677: $res = '<a href="'.$hash{'src_'.$ResId}.'">'.$res.'</a>';
678: #$Map = '<a href="'.$Map.'">'.$res.'</a>';
679:
680: #------------------------ Compute the Average of Tries about one problem
681: my $Average = ($StdNo) ? $TotalTries/$StdNo : 0;
682:
683: $storestats{$ENV{'request.course.id'}.'___'.$urlres.'___timestamp'}=time;
684: $storestats{$ENV{'request.course.id'}.'___'.$urlres.'___stdno'}=$StdNo;
685: $storestats{$ENV{'request.course.id'}.'___'.$urlres.'___avetries'}=$Average;
686:
687: #-------------------------------- Compute percentage of Wrong tries
688: my $Wrong = ( $StdNo ) ? 100 * ( $Incorrect / $StdNo ) : 0;
689:
690: #-------------------------------- Compute Standard Deviation
691: my $StdDev = 0;
692: if ( $StdNo > 1 ) {
693: for ( my $n = 0; $n < $StdNo; $n++ ) {
694: my $Dif = $StdLst[ $n ]-$Average;
695: $StdDev += $Dif*$Dif;
696: }
697: $StdDev /= ( $StdNo - 1 );
698: $StdDev = sqrt( $StdDev );
699: }
700:
701: #-------------------------------- Compute Degree of Difficulty
702: my $DoDiff = 0;
703: if( $TotalTries > 0 ) {
704: $DoDiff = 1 - ( ( $YES + $Override ) / $TotalTries );
705: # $DoDiff = ($TotalTries)/($YES + $Override+ 0.1);
706: }
707:
708: $storestats{$ENV{'request.course.id'}.'___'.$urlres.'___difficulty'}=$DoDiff;
709:
710: #-------------------------------- Compute the Skewness
711: my $Skewness = 0;
712: my $Sum = 0;
713: if ( $StdNo > 0 && $StdDev > 0 ) {
714: for ( my $n = 0; $n < $StdNo; $n++ ) {
715: my $Dif = $StdLst[ $n ]-$Average;
716: $Skewness += $Dif*$Dif*$Dif;
717: }
718: $Skewness /= $StdNo;
719: $Skewness /= $StdDev*$StdDev*$StdDev;
720: }
721: #----------------- Some restition in presenting the float numbers
722: my $Avg = sprintf( "%.2f", $Average );
723: my $Wrng = sprintf( "%.1f", $Wrong );
724: my $SD = sprintf( "%.1f", $StdDev );
725: my $DoD = sprintf( "%.2f", $DoDiff );
726: my $Sk = sprintf( "%.1f", $Skewness );
727: my $join = $PrOrd.':'.$Temp.':'.$StdNo.':'.
728: $TotalTries.':'.$MxTries.':'.$Avg.':'.
729: $YES.':'.$Override.':'.$Wrng.':'.$DoD.':'.
730: $SD.':'.$Sk.':'.$Prob;
731: $CachData{($p_count-1)}=$join;
732:
733: $urlres=~/^(\w+)\/(\w+)/;
734: if ($StdNo) {
735: &Apache::lonnet::put('resevaldata',\%storestats,$1,$2);
736: }
737: #-------------------------------- Row of statistical table
738: if ( $DiscFlag == 0 ) {
739: &TableRow($join,$i,($p_count-1));
740: }
741: }
742: &CloseTable();
743: }
744: }
745:
746: sub Cache_Statistics {
747: my @list = ();
748: my $Useful;
749: my $UnUseful;
750: my %myHeader = reverse( %Header );
751: $Pos = $myHeader{$ENV{'form.sort'}};
752: if ($Pos > 0) {$Pos++;}
753: $p_count = 0;
754: foreach my $key( keys %CachData) {
755: my @Temp=split(/\:/,$CachData{$key});
756: if ( $Pos == 0 ) {
757: ($UnUseful,$Useful)=split(/\>/,$Temp[$Pos]);
758: }
759: else {
760: $Useful = $Temp[$Pos];
761: }
762: $list[$p_count]=$Useful.'&'.$CachData{$key};
763: $p_count++;
764: }
765:
766: @list = sort MySort (@list);
767:
768: my $nIdx=0;
769:
770: if ( $Pos == 0 ) {
771: foreach (sort keys %mapsort) {
772: my ($Hid,$pr)=split(/\:/,$mapsort{$_});
773: &CreateTable(1,$Hid);
774: my @lpr=split(/\&/,$pr);
775: for (my $i=1; $i<=$#lpr; $i++) {
776: my($Pre, $Post) = split(/\&/,$list[$nIdx]);
777: &TableRow($Post,$i,$nIdx);
778: $nIdx++;
779: }
780: &CloseTable();
781: }
782: }
783: else {
784: &CreateTable(0);
785: for ( my $nIdx = 0; $nIdx < $p_count; $nIdx++ ) {
786: my($Pre, $Post) = split(/\&/,$list[$nIdx]);
787: &TableRow($Post,$nIdx,$nIdx);
788: }
789: &CloseTable();
790: }
791: }
792:
793: sub TableRow {
794: my ($Str,$Idx,$RealIdx)=@_;
795: my($PrOrd,$Temp,$StdNo,$TotalTries,$MxTries,$Avg,$YES,
796: $Override,$Wrng,$DoD,$SD,$Sk,$Prob)=split(/\:/,$Str);
797: $r->print( "\n".'<tr>'.
798: "\n".'<td>'.($RealIdx+1).'</td>'.
799: "\n".'<td bgcolor="#FFFFFF">'.$Temp.'</td>'.
800: "\n".'<td bgcolor="#EEFFDD"> '.$StdNo.'</td>'.
801: "\n".'<td bgcolor="#EEFFDD">'.$TotalTries.'</td>'.
802: "\n".'<td bgcolor="#EEFFDD">'.$MxTries.'</td>'.
803: "\n".'<td bgcolor="#DDFFFF">'.$Avg.'</td>'.
804: "\n".'<td bgcolor="#DDFFFF"> '.$YES.'</td>'.
805: "\n".'<td bgcolor="#DDFFFF"> '.$Override.'</td>'.
806: "\n".'<td bgcolor="#FFDDDD"> '.$Wrng.'</td>'.
807: "\n".'<td bgcolor="#FFDDDD">'.$DoD.'</td>'.
808: "\n".'<td bgcolor="#DDFFDD"> '.$SD.'</td>'.
809: "\n".'<td bgcolor="#DDFFDD"> '.$Sk.'</td>'.
810: # "\n".'<td>'.$res.'</td>'.
811: "\n".'</tr>' );
812: $GraphDat{$RealIdx}=$DoD.':'.$Wrng;
813: }
814:
815: # ------------------------------------------- Prepare data for Graphical chart
816:
817: sub GetGraphData {
818: my $Tag = shift;
819: my $Col;
820: my $data='';
821: my $count = 0;
822: my $Max = 0;
823: my $cid=$ENV{'request.course.id'};
824: my $GraphDB = "/home/httpd/perl/tmp/$ENV{'user.name'}".
825: "_$ENV{'user.domain'}_$cid\_graph.db";
826: foreach (keys %GraphDat) {delete $GraphDat{$_};}
827: if (-e "$GraphDB") {
828: if (tie(%GraphDat,'GDBM_File',"$GraphDB",&GDBM_READER,0640)) {
829: if ( $Tag eq 'DoDiff Graph' ) {
830: $Tag = 'Degree-of-Difficulty';
831: $Col = 0;
832: }
833: else {
834: $Tag = 'Wrong-Percentage';
835: $Col = 1;
836: }
837: foreach (sort NumericSort keys %GraphDat) {
838: my @Temp=split(/\:/,$GraphDat{$_});
839: my $inf = $Temp[$Col];
840: if ( $Max < $inf ) {$Max = $inf;}
841: $data .= $inf.',';
842: $count++;
843: }
844: untie(%GraphDat);
845: my $Course = $ENV{'course.'.$cid.'.description'};
846: $Course =~ s/\ /"_"/eg;
847: $GData=$Course.'&'.$Tag.'&'.$Max.'&'.$count.'&'.$data;
848:
849: }
850: else {
851: $r->print("Unable to tie hash to db file");
852: }
853: }
854: }
855:
856:
857: sub initial {
858: # --------------------------------- Initialize the global varaibles
859: undef @students;
860: undef @cols;
861: undef %maps;
862: undef %section;
863: undef %StuBox;
864: undef @list;
865: undef %CachData;
866: undef %GraphDat;
867: undef %DiscFac;
868: undef $CurMap;
869: undef $CurSec;
870: undef $CurStu;
871: undef $p_count;
872: undef $Pos;
873: undef $GData;
874: $DiscFlag=0;
875: $P_Order=100000;
876: $HWN=$P_Order;
877: }
878:
879:
880: sub ClassList {
881:
882: &GetStatus();
883:
884: $cid=$ENV{'request.course.id'};
885: my $chome=$ENV{'course.'.$cid.'.home'};
886: my ($cdom,$cnum)=split(/\_/,$cid);
887: # ----------------------- Get first and last resource, see if there is anything
888: $firstres=$hash{'map_start_/res/'.$ENV{'request.course.uri'}};
889: $lastres=$hash{'map_finish_/res/'.$ENV{'request.course.uri'}};
890: if (($firstres) && ($lastres)) {
891: # ----------------------------------------------------------------- Render page
892: my $classlst=&Apache::lonnet::reply
893: ('dump:'.$cdom.':'.$cnum.':classlist',$chome);
894: my $StudNo = 0;
895: my $now=time;
896: unless ($classlst=~/^error\:/) {
897: foreach (sort split(/\&/,$classlst)) {
898: my ($name,$value)=split(/\=/,$_);
899: my ($end,$start)=split(/\:/,&Apache::lonnet::unescape($value));
900: $name=&Apache::lonnet::unescape($name);
901: my ($sname,$sdom)=split(/\:/,$name);
902: my $active=1;
903: my $Status=$ENV{'form.status'};
904: $Status = ($Status) ? $Status : 'Active';
905: if ( ( ($end) && $now > $end ) &&
906: ( ($Status eq 'Active') ) ) { $active=0; }
907: if ( ($Status eq 'Expired') &&
908: ($end == 0 || $now < $end) ) { $active=0; }
909: if ($active) {
910: my $thisindex=$#students+1;
911: $name=&Apache::lonnet::unescape($name);
912: $students[$thisindex]=$name;
913: my ($sname,$sdom)=split(/\:/,$name);
914:
915: #my %reply=&Apache::lonnet::idrget($sdom,$sname);
916: #my $reply=&Apache::lonnet::reply('get:'.$sdom.':'.$sname.
917: # ':environment:lastname&generation&firstname&middlename',
918: # &Apache::lonnet::homeserver($sname,$sdom));
919: my $ssec=&usection($sdom,$sname,$cid,$Status);
920: if ($ssec==-1) {next;}
921: $ssec=($ssec) ? $ssec : '(none)';
922: #$ssec=(int($ssec)) ? int($ssec) : $ssec;
923: #$r->print($sname.'...'.$ssec.'<br>');
924: $section{$ssec}=$ssec;
925: if ($CurSec eq 'All Sections' || $ssec eq $CurSec) {
926: $students[$StudNo]=$name;
927: $StuBox{$sname}=$ssec;
928: }
929: $StudNo++;
930: }
931: }
932: }
933: else {
934: $r->print('<h1>Could not access course data</h1>');
935: }
936: $r->print("Total number of students : ".($#students+1));
937: $r->rflush();
938: # --------------- Find all assessments and put them into some linear-like order
939: &tracetable($firstres,'&'.$lastres.'&');
940:
941: # my $c=0;
942: # foreach (sort keys %mapsort) {
943: # $r->print('<br>'.$c.')'.$_.' ... '.$mapsort{$_});
944: # $c++;
945: # }
946: #foreach(@cols) {
947: # $c++;
948: # $r->print('<br>'.$cols[$c]);
949: #}
950: #$r->print('<br> Count = '.$c);
951:
952: }
953:
954: # ------------------------------------------------------------- End render page
955: else {
956: $r->print('<h3>Undefined course sequence</h3>');
957: }
958: &MapSecOptions();
959: }
960:
961:
962: sub Menu {
963: my $InpStr = $ENV{'form.sort'};
964: if ( $InpStr eq 'DoDiff Graph' || $InpStr eq '%Wrong Graph' ) {
965: &GetGraphData($InpStr);
966: $r->print('<IMG src="/cgi-bin/graph.gif?'.$GData.'" />');
967: }
968: else {
969: $r->print('<html><head><title>LON-CAPA Statistics</title></head>');
970:
971:
972: $r->print('<body bgcolor="#FFFFFF">'.
973: '<script>window.focus(); window.width=500;window.height=500; </script>'.
974: '<img align=right src=/adm/lonIcons/lonlogos.gif>');
975: # ---------------------------------------------------------------- Course title
976: $r->print('<h1> Course : "'.
977: $ENV{'course.'.$ENV{'request.course.id'}.
978: '.description'}.'"</h1><h2>'.localtime().'</h2>');
979: # ------------------------------- This is going to take a while, produce output
980: $r->rflush();
981:
982: $r->print("\n".'<form name=stat method=post action="/adm/statistics" >');
983:
984: my $content = $ENV{'form.sort'};
985: if ($content eq '' || $content eq 'Return to Menu') {
986: my $Ptr = '<h3>';
987: $Ptr .= '<input type=submit name=sort value="Problem Evaluation"/>';#General Statistics"/>';
988: $Ptr .= '<br><br>';
989: $Ptr .= '<input type=submit name=sort value="Student Assessment"/>';
990: $Ptr .= '<br><br>';
991: # $Ptr .= '<input type=submit name=sort value=Discrimination>';#"Problem Evaluation"/>';
992: $Ptr .= '</h3>';
993: $r->print( $Ptr );
994: }
995: else {
996: &initial();
997: &ClassList();
998: if ( $content eq 'Discrimination' || #'Problem Evaluation' ||
999: $content eq 'Recalculate Discrimintion Factor' ) {
1000: &CreateDiscFac();
1001: }
1002: elsif ( $content eq 'Student Assessment' ||
1003: $content eq 'Create Student Report' ) {
1004: &StudentOptions();
1005: &StudentReport($CurStu,$StuBox{"$CurStu"});
1006: }
1007: else {
1008: &PreStatTable();
1009: }
1010: }
1011: $r->print("\n".'</form>'.
1012: "\n".'</body>'.
1013: "\n".'</html>');
1014: $r->rflush();
1015: }
1016: }
1017:
1018: sub StudentOptions {
1019: my $OpSel5='';
1020: $CurStu = $ENV{'form.student'};
1021: if ( $CurStu eq '' ) {
1022: $CurStu = 'All Students';
1023: $OpSel5 = 'selected';
1024: }
1025: my $Ptr ='';
1026: # ----------------------------------- Loading the Students Combobox
1027: $Ptr .= '<br><b>Select Student</b>'."\n".
1028: '<select name="student">'."\n".
1029: '<option '.$OpSel5.'>All Students</option>';
1030: foreach my $key ( sort keys %StuBox ) {
1031: $Ptr .= '<option';
1032: if ($CurStu eq $key) {$Ptr .= ' selected';}
1033: $Ptr .= '>'.$key."</option>\n";
1034: }
1035: $Ptr .= '</select>';
1036: $Ptr .= '<br><input type="submit" name="sort" value="Create Student Report" />';
1037: $r->print( $Ptr );
1038: $r->rflush();
1039: }
1040:
1041: sub GetStatus {
1042:
1043: $OpSelDis1='';
1044: $OpSelDis2='';
1045: $OpSel1='';
1046: $OpSel2='';
1047: $OpSel3='';
1048: $OpSel4='';
1049:
1050: # if ( $ENV{'form.DisType'} eq 'Total Number of Correct Answers' ) {
1051: # $OpSelDis1='selected';
1052: # $CurDis=0;
1053: # }
1054: # else { $OpSel2 = 'selected'; $CurDis = 1;}
1055:
1056: if ( $ENV{'form.order'} eq 'Descending' ) { $OpSel2='selected'; }
1057: else { $OpSel1 = 'selected'; }
1058:
1059: my %myHeader = reverse( %Header );
1060: $Pos = $myHeader{$ENV{'form.sort'}};
1061: if ($Pos == 0) {
1062: $OpSel1 = 'selected';
1063: $ENV{'form.order'}='Ascendig';
1064: }
1065:
1066: $CurMap = $ENV{'form.maps'};
1067: if ( $CurMap eq '' ) {
1068: $CurMap = 'All Maps';
1069: $OpSel3 = 'selected';
1070: }
1071: $CurSec = $ENV{'form.section'};
1072: if ( $CurSec eq '' ) {
1073: $CurSec = 'All Sections';
1074: $OpSel4 = 'selected';
1075: }
1076: }
1077:
1078:
1079: sub MapSecOptions {
1080: # ----------------------------------- Loading the Maps Combobox
1081: my $Ptr = '<br>';
1082: $Ptr .= '<br><input type="submit" name="sort" value="Return to Menu" />';
1083: $Ptr .= '<br><b> Select Map </b>'."\n".
1084: '<select name="maps">'."\n".
1085: '<option '.$OpSel3.'>All Maps</option>';
1086: foreach my $key ( sort keys %maps ) {
1087: $Ptr .= '<option';
1088: if ($CurMap eq $key) {$Ptr .= ' selected';}
1089: $Ptr .= '>'.$key."</option>\n";
1090: }
1091: $Ptr .= '</select>';
1092: $Ptr .= ' ';
1093:
1094: # ----------------------------------- Loading the Sections Combobox
1095: $Ptr .= '<br><b>Select Section</b>'."\n".
1096: '<select name="section">'."\n".
1097: '<option '.$OpSel4.'>All Sections</option>';
1098: foreach my $key ( sort keys %section ) {
1099: $Ptr .= '<option';
1100: if ($CurSec eq $key) {$Ptr .= ' selected';}
1101: $Ptr .= '>'.$key."</option>"."\n";
1102: }
1103: $Ptr .= '</select>'."\n";
1104:
1105: $r->print( $Ptr );
1106: $r->rflush();
1107: }
1108:
1109:
1110: # ================================================================ Main Handler
1111:
1112: sub handler {
1113: $r=shift;
1114:
1115: if (&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'})) {
1116: # ------------------------------------------- Set document type for header only
1117: if ($r->header_only) {
1118: if ($ENV{'browser.mathml'}) {
1119: $r->content_type('text/xml');
1120: }
1121: else {
1122: $r->content_type('text/html');
1123: }
1124: $r->send_http_header;
1125: return OK;
1126: }
1127: my $requrl=$r->uri;
1128: # ----------------------------------------------------------------- Tie db file
1129:
1130: undef %hash;
1131:
1132: if ($ENV{'request.course.fn'}) {
1133: my $fn=$ENV{'request.course.fn'};
1134: if (-e "$fn.db") {
1135: if (tie(%hash,'GDBM_File',"$fn.db",&GDBM_READER,0640)) {
1136: # ------------------------------------------------------------------- Hash tied
1137: $r->content_type('text/html');
1138: $r->send_http_header;
1139: &Menu();
1140: }
1141: else {
1142: $r->content_type('text/html');
1143: $r->send_http_header;
1144: $r->print('<html><body>Coursemap undefined.</body></html>');
1145: }
1146: # ------------------------------------------------------------------ Untie hash
1147: unless (untie(%hash)) {
1148: &Apache::lonnet::logthis("<font color=blue>WARNING: ".
1149: "Could not untie coursemap $fn (browse).</font>");
1150: }
1151:
1152: # -------------------------------------------------------------------- All done
1153: return OK;
1154: # ----------------------------------------------- Errors, hash could no be tied
1155: }
1156: }
1157: else {
1158: $ENV{'user.error.msg'}="$requrl:bre:0:0:Course not initialized";
1159: return HTTP_NOT_ACCEPTABLE;
1160: }
1161: }
1162: else {
1163: $ENV{'user.error.msg'}=
1164: $r->uri.":vgr:0:0:Cannot view grades for complete course";
1165:
1166: return HTTP_NOT_ACCEPTABLE;
1167: }
1168: }
1169: 1;
1170: __END__
1171:
1172:
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