1: # The LearningOnline Network with CAPA
2: # (Publication Handler
3: #
4: # $Id: lonstatistics.pm,v 1.26 2002/05/31 16:02:11 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: # 5/5,7/9,7/25/1,8/11,9/13,9/26,10/5,10/9,10/22,10/26 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: # 1/22,2/1,2/6,2/25,3/2,3/6,3/17,3/21,3/22,3/26,4/7,5/6 Behrouz Minaei
34: # 5/12,5/14,5/15,5/19,5/26 Behrouz Minaei
35: #
36: ###
37:
38: package Apache::lonstatistics;
39:
40: use strict;
41: use Apache::Constants qw(:common :http);
42: use Apache::lonnet();
43: use Apache::lonhomework;
44: use Apache::loncommon;
45: use HTML::TokeParser;
46: use GDBM_File;
47:
48: # -------------------------------------------------------------- Module Globals
49: my %hash;
50: my %CachData;
51: my %GraphDat;
52: my %OpResp;
53: my %maps;
54: my %mapsort;
55: my %section;
56: my %StuBox;
57: my %DiscFac;
58: my %DisUp;
59: my %DisLow;
60: my $UpCnt;
61: my $CurMap;
62: my $CurSec;
63: my $CurStu;
64: my @cols;
65: my @list;
66: my @students;
67: my $p_count;
68: my $Pos;
69: my $r;
70: my $OpSel1;
71: my $OpSel2;
72: my $OpSel3;
73: my $OpSel4;
74: my $GData;
75: my $cid;
76: my $firstres;
77: my $lastres;
78: my $DiscFlag;
79: my $HWN;
80: my $P_Order;
81: my %color;
82: my %foil_to_concept;
83: my @Concepts;
84: my %ConceptData;
85: my %Header = (0,"Homework Sets Order",1,"#Stdnts",2,"Tries",3,"Mod",
86: 4,"Mean",5,"#YES",6,"#yes",7,"%Wrng",8,"DoDiff",
87: 9,"S.D.",10,"Skew.",11,"D.F.1st",12,"D.F.2nd");
88: my %Answer = ();
89:
90:
91: sub Activity {
92: my $file="/home/minaeibi/activity.log";
93: my $userid='adamsde1';
94: $r->print("<br>Using $file");
95: $r->rflush();
96: open(FILEID, "<$file");
97: my $line;
98: my @allaccess;
99: my $Count=0;
100: while ($line=<FILEID>) {
101: my ($time,$machine,$what)=split(':',$line);
102: $what=&Apache::lonnet::unescape($what);
103: my @accesses=split('&',$what);
104: foreach my $access (@accesses) {
105: my ($date,$resource,$who,$domain,$post,@posts)=split(':',$access);
106: if ($who ne $userid) { next; }
107: if (!$resource) { next; }
108: my $res=&Apache::lonnet::unescape($resource);
109: if (($res =~ /\.(problem|htm|html)/)) {
110: $Count++;
111: $r->print("<br>$Count) ".localtime($date).": $who --> $res");
112: # if ($post) {
113: # $Count++;
114: # $r->print("<br><b>$Count) Sent data ".join(':',
115: # &Apache::lonnet::unescape(@posts)).'</b>');
116: # }
117: $r->rflush();
118: }
119: ## push (@allaccess,unescape($access));
120: #print $machine;
121: }
122: }
123: # @allaccess=sort(@allaccess);
124: # $Count=0;
125: # foreach my $access (@allaccess) {
126: # my ($date,$resource,$who,$domain,$post,@posts)=split(':',$access);
127: # $Count++;
128: # $r->print("<br>$Count) $date: $who --> $resource");
129: # $r->rflush();
130: # if ($post) {
131: # $r->print("<br><b>Sent data ".join(':',unescape(@posts)).'</b>');
132: # }
133: # }
134: }
135:
136:
137:
138: sub InitAnalysis {
139: my ($rid, $student)=@_;
140: my ($uname,$udom)=split(/\:/,$student);
141: $rid=~/(\d+)\.(\d+)/;
142: my $symb=&Apache::lonnet::declutter($hash{'map_id_'.$1}).'___'.$2.'___'.
143: &Apache::lonnet::declutter($hash{'src_'.$rid});
144: my $URI = $hash{'src_'.$rid};
145: my $Answ=&Apache::lonnet::ssi($URI,('grade_target' => 'analyze',
146: 'grade_username' => $uname,
147: 'grade_domain' => $udom,
148: 'grade_courseid' => $cid,
149: 'grade_symb' => $symb));
150: # my $Answ=&Apache::lonnet::ssi($URI,('grade_target' => 'analyze'));
151:
152: (my $garbage,$Answ)=split(/_HASH_REF__/,$Answ,2);
153: %Answer=();
154: %Answer=&Apache::lonnet::str2hash($Answ);
155:
156: my $parts='';
157: foreach my $elm (@{$Answer{"parts"}}) {
158: $parts.="$elm,";
159: }
160: chop($parts);
161: my $conc='';
162: foreach my $elm (@{$Answer{"$parts.concepts"}}) {
163: $conc.="$elm@";
164: }
165: chop($conc);
166:
167: @Concepts=split(/\@/,$conc);
168: foreach my $concept (@{$Answer{"$parts.concepts"}}) {
169: foreach my $foil (@{$Answer{"$parts.concept.$concept"}}) {
170: $foil_to_concept{$foil} = $concept;
171: #$ConceptData{$foil} = $Answer{"$parts.foil.value.$foil"};
172: }
173: }
174: return $symb;
175: }
176:
177:
178: sub Interval {
179: my ($rid,$part,$symb)=@_;
180: my $Int=$ConceptData{"Interval"};
181: my $due = &Apache::lonnet::EXT('resource.$part.duedate',$symb)+1;
182: my $opn = &Apache::lonnet::EXT('resource.$part.opendate',$symb);
183: my $add=int(($due-$opn)/$Int);
184: $ConceptData{"Int.0"}=$opn;
185: for (my $i=1;$i<$Int;$i++) {
186: $ConceptData{"Int.$i"}=$opn+$i*$add;
187: }
188: $ConceptData{"Int.$Int"}=$due;
189: for (my $i=0;$i<$Int;$i++) {
190: for (my $n=0; $n<=$#Concepts; $n++ ) {
191: my $tmp=$Concepts[$n];
192: $ConceptData{"$tmp.$i.true"}=0;
193: $ConceptData{"$tmp.$i.false"}=0;
194: }
195: }
196: }
197:
198:
199: sub ShowOpGraph {
200: my ($InpStr, $Int_No)=@_;
201: my ($rid,$part)=split(/\:/,substr($InpStr,8));
202: $ConceptData{"Interval"}=$Int_No;
203: #Initialize the option response true answers
204: my $symb=&InitAnalysis($rid,$students[0]);
205: #compute the intervals
206: &Interval($rid,$part,$symb);
207: my $URI = $hash{'src_'.$rid};
208: my $Src = $hash{'title_'.$rid};
209: $Src =~ s/\ /"_"/eg;
210: $r->print('<br><b>'.$URI.'</b>');
211: $r->rflush();
212:
213: #Java script Progress window
214: &Create_PrgWin();
215: &Update_PrgWin("Starting to analyze problem");
216: for (my $index=0;$index<=$#students;$index++) {
217: &Update_PrgWin($index);
218: &OpStatus($rid,$students[$index]);
219: }
220: &Close_PrgWin();
221:
222: $r->print('<br>');
223: for (my $k=0; $k<$Int_No; $k++ ) {
224: &DrawGraph($k,$Src);
225: }
226: for (my $k=0; $k<$Int_No; $k++ ) {
227: &DrawTable($k);
228: }
229: #$Apache::lonxml::debug=1;
230: #&Apache::lonhomework::showhash(%ConceptData);
231: #$Apache::lonxml::debug=0;
232: my $Answ=&Apache::lonnet::ssi($URI);
233: $r->print("<br><b>Here you can see the Problem:</b><br>$Answ");
234: }
235:
236:
237: sub DrawTable {
238: my $k=shift;
239: my $Max=0;
240: my @data1;
241: my @data2;
242: my $Correct=0;
243: my $Wrong=0;
244: for (my $n=0; $n<=$#Concepts; $n++ ) {
245: my $tmp=$Concepts[$n];
246: $data1[$n]=$ConceptData{"$tmp.$k.true"};
247: $Correct+=$data1[$n];
248: $data2[$n]=$ConceptData{"$tmp.$k.false"};
249: $Wrong+=$data2[$n];
250: my $Sum=$data1[$n]+$data2[$n];
251: if ( $Max<$Sum ) {$Max=$Sum;}
252: }
253: for (my $n=0; $n<=$#Concepts; $n++ ) {
254: if ($data1[$n]+$data2[$n]<$Max) {
255: $data2[$n]+=$Max-($data1[$n]+$data2[$n]);
256: }
257: }
258: my $P_No = $#data1+1;
259: # $r->print('<br><b>From: ['.localtime($ConceptData{'Int.'.($k-1)}).
260: # '] To: ['.localtime($ConceptData{"Int.$k"}).']</b>');
261: my $Str = "\n".'<table border=2>'.
262: "\n".'<tr>'.
263: "\n".'<th> # </th>'.
264: "\n".'<th> Concept </th>'.
265: "\n".'<th> Correct </th>'.
266: "\n".'<th> Wrong </th>'.
267: "\n".'</tr>';
268:
269: for (my $n=0; $n<=$#Concepts; $n++ ) {
270: $Str .= "\n"."<tr>".
271: "\n"."<td>".($n+1)."</td>".
272: "\n".'<td bgcolor='.$color{"yellow"}.'> '.$Concepts[$n]." </td>".
273: "\n".'<td bgcolor='.$color{"green"}.'> '.$data1[$n]." </td>".
274: "\n".'<td bgcolor='.$color{"red"}.'> '.$data2[$n]." </td>".
275: "\n"."</tr>";
276: }
277: $Str.='<td></td><td><b>From:['.localtime($ConceptData{'Int.'.$k}).
278: '] To: ['.localtime($ConceptData{'Int.'.($k+1)}-1).
279: "]</b></td><td>$Correct</td><td>$Wrong</td>";
280:
281: $Str .= "\n".'</table>';
282:
283: $r->print($Str);
284: #$Apache::lonxml::debug=1;
285: #&Apache::lonhomework::showhash(%ConceptData);
286: #$Apache::lonxml::debug=0;
287: }
288:
289:
290: sub DrawGraph {
291: my ($k,$Src)=@_;
292: my $Max=0;
293: my @data1;
294: my @data2;
295:
296: # Adjust Data and find the Max
297: for (my $n=0; $n<=$#Concepts; $n++ ) {
298: my $tmp=$Concepts[$n];
299: $data1[$n]=$ConceptData{"$tmp.$k.true"};
300: $data2[$n]=$ConceptData{"$tmp.$k.false"};
301: my $Sum=$data1[$n]+$data2[$n];
302: if ( $Max<$Sum ) {$Max=$Sum;}
303: }
304: for (my $n=0; $n<=$#Concepts; $n++ ) {
305: if ($data1[$n]+$data2[$n]<$Max) {
306: $data2[$n]+=$Max-($data1[$n]+$data2[$n]);
307: }
308: }
309: my $P_No = $#data1+1;
310:
311: if ( $Max > 1 ) {
312: $Max += (10 - $Max % 10);
313: $Max = int($Max);
314: } else { $Max = 1; }
315:
316: my $Titr=($ConceptData{'Interval'}>1) ? $Src.'_interval_'.($k+1) : $Src;
317: # $GData=$Titr.'&Concepts'.'&'.'Answers'.'&'.$Max.'&'.$P_No.'&'.$data1.'&'.$data2;
318: $GData="$Titr&Concepts&Answers&$Max&$P_No&".
319: (join(',',@data1)).'&'.(join(',',@data2));
320:
321: $r->print('<IMG src="/cgi-bin/graph.gif?'.$GData.'" border=1/>');
322: }
323:
324:
325: sub AnalyzeProblem {
326: # selecting the number of intervals
327: my $OpSel='';
328: my $CurInt = $ENV{'form.interval'};
329: if ($CurInt eq '') {$CurMap = '1';}
330: my $Ptr = '<br><b>Select number of intervals</b>'."\n".
331: '<select name="interval">'."\n";
332: for (my $n=1;$n<=7;$n++) {
333: $Ptr .= '<option';
334: if ($CurInt eq $n) {$Ptr .= ' selected';}
335: $Ptr .= '>'.$n."</option>"."\n";
336: }
337: $Ptr .= '</select>'."\n";
338: $r->print( $Ptr );
339:
340: #the table of option response problems
341: $r->print('<br><b> Option Response Problems in this course:</b><br><br>');
342: my $Str = "\n".'<table border=2>'.
343: "\n".'<tr>'.
344: "\n".'<th> # </th>'.
345: "\n".'<th> Problem Title </th>'.
346: "\n".'<th> Resource </th>'.
347: "\n".'<th> Address </th>'.
348: "\n".'</tr>';
349:
350: my $P_No=1;
351: foreach (sort keys %OpResp) {
352: my ($rid,$part)=split(/\:/,$OpResp{$_});
353: my $Temp = '<a href="'.$hash{'src_'.$rid}.
354: '" target="_blank">'.$hash{'title_'.$rid}.'</a>';
355: $Str .= "\n"."<tr>".
356: "\n"."<td> $P_No </td>".
357: "\n"."<td bgcolor=".$color{"green"}."> ".$Temp." </td>".
358: "\n"."<td bgcolor=".$color{"yellow"}."> ".$hash{'src_'.$rid}." </td>".
359: "\n"."<td> ".'<input type="submit" name="sort" value="'.'Analyze_'.$rid.'" />'.'</td>'.
360: "\n"."</tr>";
361: $P_No++;
362: }
363: $Str .= "\n".'</table>';
364: $Str .= "\n".'</form>';
365: $r->print($Str);
366: $r->rflush();
367: }
368:
369:
370: sub Decide {
371: #deciding the true or false answer belongs to each interval
372: my ($type,$foil,$time)=@_;
373: my $k=0;
374: while ($time>$ConceptData{'Int.'.($k+1)} &&
375: $k<$ConceptData{'Interval'}) {$k++;}
376: $ConceptData{"$foil_to_concept{$foil}.$k.$type"}++;
377: }
378:
379:
380: #restore the student submissions and finding the result
381: sub OpStatus {
382: my ($rid,$student)=@_;
383: my ($uname,$udom)=split(/\:/,$student);
384: my $code='U';
385: $rid=~/(\d+)\.(\d+)/;
386: my $symb=&Apache::lonnet::declutter($hash{'map_id_'.$1}).'___'.$2.'___'.
387: &Apache::lonnet::declutter($hash{'src_'.$rid});
388: my %reshash=&Apache::lonnet::restore($symb,$cid,$udom,$uname);
389: my @True = ();
390: my @False = ();
391: my $flag=0;
392: if ($reshash{'version'}) {
393: my $tries=0;
394: &Apache::lonhomework::showhash(%Answer);
395: for (my $version=1;$version<=$reshash{'version'};$version++) {
396: my $time=$reshash{"$version:timestamp"};
397:
398: foreach my $key (sort(split(/\:/,$reshash{$version.':keys'}))) {
399: if (($key=~/\.(\w+)\.(\w+)\.submission$/)) {
400: my $Id1 = $1; my $Id2 = $2;
401: #check if this is a repeat submission, if so skip it
402: if ($reshash{"$version:resource.$Id1.previous"}) { next; }
403: #if no solved this wasn't a real submission, ignore it
404: if (!defined($reshash{"$version:resource.$Id1.solved"})) {
405: &Apache::lonxml::debug("skipping ");
406: next;
407: }
408: my $Resp = $reshash{"$version:$key"};
409: my %submission=&Apache::lonnet::str2hash($Resp);
410: foreach (keys %submission) {
411: my $Ansr = $Answer{"$Id1.$Id2.foil.value.$_"};
412: if ($submission{$_}) {
413: if ($submission{$_} eq $Ansr) {
414: &Decide("true",$_,$time );
415: }
416: else {&Decide("false",$_,$time );}
417: }
418: }
419: }
420: }
421: }
422: }
423: }
424:
425:
426: #------- Processing upperlist and lowerlist according to each problem
427: sub ProcessDisc {
428: my @List = @_;
429: @List = sort (@List);
430: my $Count = $#List+1;
431: my $Prb;
432: my @Dis;
433: my $Slvd=0;
434: my $tmp;
435: my $Sum1=0;
436: my $Sum2=0;
437: my $nIdx=0;
438: my $nStud=0;
439: my %Proc;
440: undef %Proc;
441: while ($nIdx<$Count) {
442: ($Prb,$tmp)=split(/\=/,$List[$nIdx]);
443: @Dis=split(/\+/,$tmp);
444: my $Temp = $Prb;
445: do {
446: $nIdx++;
447: $nStud++;
448: $Sum1 += $Dis[0];
449: $Sum2 += $Dis[1];
450: ($Prb,$tmp)=split(/\=/,$List[$nIdx]);
451: @Dis=split(/\+/,$tmp);
452: } while ( $Prb eq $Temp && $nIdx < $Count );
453: # $Proc{$Temp}=($Sum1/$nStud).':'.$nStud;
454: $Proc{$Temp}=($Sum1/$nStud).':'.($Sum2/$nStud);
455: # $r->print("$nIdx) $Temp --> ($nStud) $Proc{$Temp} <br>");
456: $Sum1=0;
457: $Sum2=0;
458: $nStud=0;
459: }
460: return %Proc;
461: }
462:
463:
464: #------- Creating Discimination factor
465: sub Discriminant {
466: my $Count=0;
467: foreach (keys(%DiscFac)){
468: $Count++;
469: }
470: $UpCnt = int(0.27*$Count);
471: my $low=0;
472: my $up=$Count-$UpCnt;
473: my @UpList=();
474: my @LowList=();
475: $Count=0;
476: foreach my $key (sort(keys(%DiscFac))){
477: $Count++;
478: #$r->print("<br>$Count) $key = $DiscFac{$key}");
479: if ($low < $UpCnt || $Count > $up) {
480: $low++;
481: my $str=$DiscFac{$key};
482: foreach(split(/\:/,$str)){
483: if ($_) {
484: if ($low<$UpCnt){push(@LowList,$_);}
485: else {push(@UpList,$_);}
486: }
487: }
488: }
489: }
490: %DisUp=&ProcessDisc(@UpList);
491: %DisLow=&ProcessDisc(@LowList);
492: }
493:
494:
495: sub NumericSort {
496: $a <=> $b;
497: }
498:
499: # ------ Create different Student Report
500: sub StudentReport {
501: my ($sname,$sdom)=@_;
502: if ( $sname eq 'All Students' ) {
503: $r->print( '<h3><font color=blue>WARNING:
504: Please select a student</font></h3>' );
505: return;
506: }
507: my %result = &Apache::lonnet::dump($cid,$sdom,$sname);
508: my $ResId;
509: my $PrOrd;
510: my $Code;
511: my $Tries;
512: my $TotalTries = 0;
513: my $ParCr = 0;
514: my $Wrongs;
515: my %TempHash;
516: my $Version;
517: my $LatestVersion;
518: my $PtrTry='';
519: my $PtrCod='';
520: my $SetNo=0;
521: my $Str = "\n".'<table border=2>'.
522: "\n".'<tr>'.
523: "\n".'<th> # </th>'.
524: "\n".'<th> Set Title </th>'.
525: "\n".'<th> Results </th>'.
526: "\n".'<th> Tries </th>'.
527: "\n".'</tr>';
528: my ($temp)=keys(%result);
529: unless ($temp=~/^(con_lost|error|no_such_host)/i) {
530: foreach my $CurCol (@cols) {
531: if (!$CurCol){
532: my $Set=&Apache::lonnet::declutter($hash{'map_id_'.$1});
533: if ( $Set ) {
534: $SetNo++;
535: $Str .= "\n"."<tr>".
536: "\n"."<td> $SetNo </td>".
537: "\n"."<td> $Set </td>".
538: "\n"."<td> $PtrCod </td>".
539: "\n"."<td> $PtrTry</td>".
540: "\n"."</tr>";
541: }
542: $PtrTry='';
543: $PtrCod='';
544: next;
545: }
546: ($PrOrd,$ResId)=split(/\:/,$CurCol);
547: $ResId=~/(\d+)\.(\d+)/;
548: my $Map = &Apache::lonnet::declutter( $hash{'map_id_'.$1} );
549: if ( $CurMap ne 'All Maps' ) {
550: my ( $ResMap, $NameMap ) = split(/\=/,$CurMap);
551: if ( $Map ne $ResMap ) { next; }
552: }
553: my $meta=$hash{'src_'.$ResId};
554: my $PartNo = 0;
555: undef %TempHash;
556: foreach (split(/\,/,&Apache::lonnet::metadata($meta,'keys'))){
557: if ($_=~/^stores\_(\w+)\_tries$/) {
558: my $Part=&Apache::lonnet::metadata($meta,$_.'.part');
559: if ( $TempHash{"$Part"} eq '' ) {
560: $TempHash{"$Part"} = $Part;
561: $TempHash{$PartNo}=$Part;
562: $TempHash{"$Part.Code"} = '-';
563: $TempHash{"$Part.PrOrd"} = $PrOrd+$PartNo;
564: $PartNo++;
565: }
566: }
567: }
568:
569: my $Prob = $Map.'___'.$2.'___'.
570: &Apache::lonnet::declutter( $hash{'src_'.$ResId} );
571: $Code='U';
572: $Tries = 0;
573: $Wrongs = 0;
574: $LatestVersion = $result{"version:$Prob"};
575: if ( $LatestVersion ) {
576: for ( my $Version=1; $Version<=$LatestVersion; $Version++ ) {
577: my $vkeys = $result{"$Version:keys:$Prob"};
578: my @keys = split(/\:/,$vkeys);
579:
580: foreach my $Key (@keys) {
581: if (($Key=~/\.(\w+)\.solved$/) && ($Key!~/^\d+\:/)) {
582: my $Part = $1;
583: $Tries = $result{"$Version:$Prob:resource.$Part.tries"};
584: $TempHash{"$Part.Tries"} = ($Tries) ? $Tries : 0;
585: $TotalTries += $Tries;
586: my $Val = $result{"$Version:$Prob:resource.$Part.solved"};
587: if ( $Val eq 'correct_by_student' )
588: { $Wrongs = $Tries - 1; $Code = 'Y'; }
589: elsif ( $Val eq 'correct_by_override' )
590: { $Wrongs = $Tries - 1; $Code = 'y'; }
591: elsif ( $Val eq 'incorrect_attempted' ||
592: $Val eq 'incorrect_by_override' )
593: { $Wrongs = $Tries; $Code = 'N'; }
594: $TempHash{"$Part.Code"} = $Code;
595: $TempHash{"$Part.Wrongs"} = $Wrongs;
596: }
597: }
598: }
599: for ( my $n = 0; $n < $PartNo; $n++ ) {
600: my $part = $TempHash{$n};
601: if ($PtrTry ne '') {$PtrTry .= ',';}
602: $PtrTry .= "$TempHash{$part.'.Tries'}";
603: $PtrCod .= "$TempHash{$part.'.Code'}";
604: }
605: }
606: else {
607: for(my $n=0; $n<$PartNo; $n++) {
608: if ($PtrTry ne '') {$PtrTry .= ',';}
609: $PtrTry .= "0";
610: $PtrCod .= "-";
611: }
612: }
613: }
614: }
615: $Str .= "\n".'</table>';
616: $r->print($Str);
617: $r->rflush();
618: }
619:
620: sub CreateTable {
621: my ($Hd, $Hid)=@_;
622: if ($ENV{'form.showcsv'}) {
623: if ( $Hd == 1 ) {
624: $r->print('<br>"'.$hash{'title_'.$Hid}.'","'.$hash{'src_'.$Hid}.'"');
625: }
626: return;
627: }
628: my $ColNo=0;
629: foreach (keys(%Header)){
630: $ColNo++;
631: }
632: if ( $Hd == 1 ) {
633: $r->print('<br><a href="'.$hash{'src_'.$Hid}.
634: '" target="_blank">'.$hash{'title_'.$Hid}.'</a>');
635: }
636: my $Result = "\n".'<table border=2>';
637: $Result .= '<tr><th>P#</th>'."\n";
638: for ( my $nIdx=0; $nIdx < $ColNo; $nIdx++ ) {
639: $Result .= '<th>'.'<input type="submit" name="sort" value="'.
640: $Header{$nIdx}.'" />'.'</th>'."\n";
641: }
642: $Result .= "\n".'</tr>'."\n";
643: $r->print( $Result );
644: $r->rflush();
645: }
646:
647: sub CloseTable {
648: if ($ENV{'form.showcsv'}) {
649: return;
650: }
651: $r->print("\n".'</table>'."\n");
652: $r->rflush();
653: }
654:
655: # ------------------------------------------- Prepare Statistics Table
656: sub PreStatTable {
657:
658: my $CacheDB = "/home/httpd/perl/tmp/$ENV{'user.name'}".
659: "_$ENV{'user.domain'}_$cid\_statistics.db";
660: my $GraphDB = "/home/httpd/perl/tmp/$ENV{'user.name'}".
661: "_$ENV{'user.domain'}_$cid\_graph.db";
662: my $OpSel11='';
663: my $OpSel12='';
664: my $OpSel13='';
665: my $Status = $ENV{'form.status'};
666: if ( $Status eq 'Any' ) { $OpSel13='selected'; }
667: elsif ($Status eq 'Expired' ) { $OpSel12 = 'selected'; }
668: else { $OpSel11 = 'selected'; }
669:
670: my $Ptr = '';
671: $Ptr .= '<br><b> Student Status: </b>'."\n".
672: '<select name="status">'.
673: '<option '.$OpSel11.' >Active</option>'."\n".
674: '<option '.$OpSel12.' >Expired</option>'."\n".
675: '<option '.$OpSel13.' >Any</option> </select> '."\n";
676: $Ptr .= ' ';
677: $Ptr .= '<input type=submit name=sort value="Recalculate Statistics"/>'."\n";
678:
679: $Ptr .= '<br><b> Sorting Type: </b>'."\n".
680: '<select name="order"> <option '.$OpSel1.' >Ascending</option>'."\n".
681: '<option '.$OpSel2.'>Descending</option> </select> '."\n";
682: $Ptr .= ' ';
683: $Ptr .= '<input type="submit" name="sort" value="DoDiff Graph" />'."\n";
684: $Ptr .= ' ';
685: $Ptr .= '<input type="submit" name="sort" value="%Wrong Graph" />'."\n";
686:
687: $Ptr .= '<pre>'.
688: '<b> #Stdnts</b>: Total Number of Students opened the problem.<br>'.
689: '<b> Tries </b>: Total Number of Tries for solving the problem.<br>'.
690: '<b> Mod </b>: Maximunm Number of Tries for solving the problem.<br>'.
691: '<b> Mean </b>: Average Number of the tries. [ Tries / #Stdnts ]<br>'.
692: '<b> #YES </b>: Number of students solved the problem correctly.<br>'.
693: '<b> #yes </b>: Number of students solved the problem by override.<br>'.
694: '<b> %Wrng </b>: Percentage of students tried to solve the problem but'.
695: ' still incorrect. [ 100*((#Stdnts-(#YES+#yes))/#Stdnts) ]<br>'.
696: # ' DoDiff : Degree of Difficulty of the problem. [ Tries/(#YES+#yes+0.1) ]<br>'. Kashy formula
697: '<b> DoDiff </b>: Degree of Difficulty of the problem. [ 1 - ((#YES+#yes) / Tries) ]<br>'. #Gerd formula
698: '<b> S.D. </b> : Standard Deviation of the tries.'.
699: '[ sqrt(sum((Xi - Mean)^2)) / (#Stdnts-1)'.
700: ' where Xi denotes every student\'s tries ]<br>'.
701: '<b> Skew. </b>: Skewness of the students tries.'.
702: ' [ (sqrt( sum((Xi - Mean)^3) / #Stdnts)) / (S.D.^3) ]<br>'.
703: '<b> Dis.F. </b>: Discrimination Factor: A Standard for '.
704: 'evaluating the problem according to a Criterion<br>'.
705: '<b> [Applied Criterion in %27 Upper Students - '.
706: 'Applied the same Criterion in %27 Lower Students]</b><br>'.
707: '<b> 1st Criterion</b> for Sorting the Students: '.
708: '<b>Sum of Partial Credit Awarded / Total Number of Tries</b><br>'.
709: '<b> 2nd Criterion</b> for Sorting the Students: '.
710: '<b>Total number of Correct Answers / Total Number of Tries</b>'.
711: '</pre>';
712:
713: $r->print($Ptr);
714:
715: $r->print('Output CSV format: <input type=checkbox name=showcsv onClick="submit()"');
716: if ($ENV{'form.showcsv'}) { $r->print(' checked'); }
717: $r->print('>');
718:
719: $r->rflush();
720:
721: if ((-e "$CacheDB")&&($ENV{'form.sort'} ne 'Recalculate Statistics')) {
722: if (tie(%CachData,'GDBM_File',"$CacheDB",&GDBM_READER,0640)) {
723: tie(%GraphDat,'GDBM_File',$GraphDB,&GDBM_WRCREAT,0640);
724: &Cache_Statistics();
725: }
726: else {
727: $r->print("Unable to tie hash to db file");
728: }
729: }
730: else {
731: if (tie(%CachData,'GDBM_File',$CacheDB,&GDBM_WRCREAT,0640)) {
732: tie(%GraphDat,'GDBM_File',$GraphDB,&GDBM_WRCREAT,0640);
733: foreach (keys %DiscFac) {delete $CachData{$_};}
734: foreach (keys %CachData) {delete $CachData{$_};}
735: $DiscFlag=0;
736: &Build_Statistics();
737: }
738: else {
739: $r->print("Unable to tie hash to db file");
740: }
741: }
742:
743: # $r->print('Total instances of the problems : '.($p_count*($#students+1)));
744: untie(%CachData);
745: untie(%GraphDat);
746: }
747:
748:
749: # ------------------------------------- Find the section of student in a course
750:
751: sub usection {
752: my ($udom,$unam,$courseid,$ActiveFlag)=@_;
753: $courseid=~s/\_/\//g;
754: $courseid=~s/^(\w)/\/$1/;
755:
756: my %result=&Apache::lonnet::dump('roles',$udom,$unam);
757: my ($checkForResult)=keys(%result);
758: if ($checkForResult=~/^(con_lost|error|no_such_host)/i) {
759: return -1;
760: }
761: foreach my $key (keys (%result)) {
762: my $value=$result{$key};
763: if ($key=~/^$courseid(?:\/)*(\w+)*\_st$/) {
764: my $section=$1;
765: if ($key eq $courseid.'_st') { $section=''; }
766: my ($dummy,$end,$start)=split(/\_/,$value);
767: if ( $ActiveFlag ne 'Any' ) {
768: my $now=time;
769: my $notactive=0;
770: if ($start) {
771: if ($now<$start) { $notactive=1; }
772: }
773: if ($end) {
774: if ($now>$end) { $notactive=1; }
775: }
776: if ((($ActiveFlag eq 'Expired') && $notactive == 1) ||
777: (($ActiveFlag eq 'Active') && $notactive == 0 ) ) {
778: return $section;
779: }
780: else { return '-1'; }
781: }
782: return $section;
783: }
784: }
785: return '-1';
786: }
787:
788:
789: # ------ Dump the Student's DB file and handling the data for statistics table
790: sub ExtractStudentData {
791: my $student=shift;
792: my ($sname,$sdom) = split( /\:/, $student );
793: my %result = &Apache::lonnet::dump($cid,$sdom,$sname);
794: my $ResId;
795: my $PrOrd;
796: my $Dis = '';
797: my $Code;
798: my $Tries;
799: my $ParCr;
800: my $TotalTries = 0;
801: my $TotalOpend = 0;
802: my $ProbSolved = 0;
803: my $ProbTot = 0;
804: my $TimeTot = 0;
805: my $TotParCr = 0;
806: my $Wrongs;
807: my %TempHash;
808: my $Version;
809: my $LatestVersion;
810: my $SecLimit;
811: my $MapLimit;
812: my ($temp)=keys(%result);
813: unless ($temp=~/^(con_lost|error|no_such_host)/i) {
814: foreach my $CurCol(@cols) {
815: ($PrOrd,$ResId)=split(/\:/,$CurCol);
816: if ( !$CurCol ) { next; }
817: $ResId=~/(\d+)\.(\d+)/;
818: my $MapId=$1;
819: my $PrbId=$2;
820: my $MapOrg = $hash{'map_id_'.$MapId};
821: my $Map = &Apache::lonnet::declutter($MapOrg);
822: if ( $CurMap ne 'All Maps' ) {
823: my ( $ResMap, $NameMap ) = split(/\=/,$CurMap);
824: if ( $Map ne $ResMap ) { next; }
825: }
826: my $meta=$hash{'src_'.$ResId};
827: my $PartNo = 0;
828: $Dis .= ':';
829: undef %TempHash;
830:
831: foreach (split(/\,/,&Apache::lonnet::metadata($meta,'keys'))) {
832: if ($_=~/^stores\_(\w+)\_tries$/) {
833: my $Part=&Apache::lonnet::metadata($meta,$_.'.part');
834: if ( $TempHash{"$Part"} eq '' ) {
835: $TempHash{"$Part"} = $Part;
836: $TempHash{$PartNo}=$Part;
837: $TempHash{"$Part.Code"} = 'U';
838: $TempHash{"$Part.PrOrd"} = $PrOrd+$PartNo;
839: $PartNo++;
840: }
841: #my $Part=&Apache::lonnet::metadata($meta,$_.'.part');
842: }
843: }
844: &Apache::lonnet::declutter( $hash{'src_'.$ResId} );
845: my $URI = $hash{'src_'.$ResId};
846: my $Prob = $Map.'___'.$PrbId.'___'.
847: &Apache::lonnet::declutter($URI);
848: $Code='U';
849: $Tries = 0;
850: $ParCr = 0;
851: $Wrongs = 0;
852: $LatestVersion = $result{"version:$Prob"};
853: if ( $LatestVersion ) {
854: for ( my $Version=1; $Version<=$LatestVersion; $Version++ ) {
855: my $vkeys = $result{"$Version:keys:$Prob"};
856: my @keys = split(/\:/,$vkeys);
857: foreach my $Key (@keys) {
858: if (($Key=~/\.(\w+)\.solved$/) && ($Key!~/^\d+\:/)) {
859: my $Part = $1;
860: $Tries = $result{"$Version:$Prob:resource.$Part.tries"};
861: $ParCr = $result{"$Version:$Prob:resource.$Part.awarded"};
862: my $Time = $result{"$Version:$Prob:timestamp"};
863: $TempHash{"$Part.Time"} = ($Time) ? $Time : 0;
864: $TempHash{"$Part.Tries"} = ($Tries) ? $Tries : 0;
865: $TempHash{"$Part.ParCr"} = ($ParCr) ? $ParCr : 0;
866: $TotalTries += $TempHash{"$Part.Tries"};
867: $TotParCr += $TempHash{"$Part.ParCr"};
868: my $Val = $result{"$Version:$Prob:resource.$Part.solved"};
869: if ( $Val eq 'correct_by_student' )
870: { $Wrongs = $Tries - 1; $Code = 'C'; }
871: elsif ( $Val eq 'correct_by_override' )
872: { $Wrongs = $Tries - 1; $Code = 'O'; }
873: elsif ( $Val eq 'incorrect_attempted' ||
874: $Val eq 'incorrect_by_override' )
875: { $Wrongs = $Tries; $Code = 'I'; }
876: $TempHash{"$Part.Code"} = $Code;
877: $TempHash{"$Part.Wrongs"} = $Wrongs;
878: }
879: }
880: }
881: for ( my $n = 0; $n < $PartNo; $n++ ) {
882: my $part = $TempHash{$n};
883: my $Yes = 0;
884: if ( $TempHash{$part.'.Code'} eq 'C' ||
885: $TempHash{$part.'.Code'} eq 'O' )
886: {$ProbSolved++;$Yes=1;}
887:
888: # my $ptr = "$hash{'title_'.$ResId}";
889: my $ptr = $TempHash{$part.'.PrOrd'}.'&'.$ResId;
890:
891: if ( $PartNo > 1 ) {
892: $ptr .= "*(part $part)";
893: $Dis .= '&';
894: }
895: my $Fac = ($TempHash{"$part.Tries"}) ?
896: ($TempHash{"$part.ParCr"}/$TempHash{"$part.Tries"}) : 0;
897: my $DisF;
898: if ( $Fac > 0 && $Fac < 1 ) {
899: $DisF = sprintf( "%.4f", $Fac );
900: }
901: else {$DisF = $Fac;}
902: # $DisF .= '+'.$TempHash{"$part.Time"};33333333
903: $TimeTot += $TempHash{"$part.Time"};
904: $Dis .= $TempHash{$part.'.PrOrd'}.'='.$DisF.'+'.$Yes;
905: $ptr .= "&$TempHash{$part.'.Tries'}".
906: "&$TempHash{$part.'.Wrongs'}".
907: "&$TempHash{$part.'.Code'}";
908: push (@list, $ptr);
909: $TotalOpend++;
910: $ProbTot++;
911: }
912: }
913: #else {
914: #for(my $n=0; $n<$PartNo; $n++) {
915: # push (@list, "$TempHash{'0'.'.PrOrd'}.':'.$ResId:0:0:U");
916: # $ProbTot++;
917: #}
918: #}
919: }
920: if ( $TotalTries ) {
921: my $DisFac = ( $TotalTries ) ? ($TotParCr/$TotalTries) : 0;
922: my $DisFactor = sprintf( "%.4f", $DisFac );
923: $DiscFac{$DisFactor}=$Dis;
924: #my $time;
925: #if ($ProbSolved){
926: #$time = int(($TimeTot/$ProbSolved)-10000000);
927: #}
928: #$DiscFac{($DisFactor.':'.$sname.':'.$ProbTot.':'.$TotalOpend.':'.
929: # $TotalTries.':'.$ProbSolved.':'.$time)}=$Dis;
930: }
931: }
932: #$r->print($sname.' PrCr= '.$TotParCr.' Slvd= '.$ProbSolved.' Tries='.$TotalTries.'<br>');
933: }
934:
935:
936:
937: # ------------------------------------------------------------ Build page table
938: sub tracetable {
939: my ($rid,$beenhere)=@_;
940: my $IsMap=0;
941: $rid=~/(\d+)\.(\d+)/;
942: $maps{&Apache::lonnet::declutter($hash{'map_id_'.$1})}='';#$hash{'title_'.$rid};
943: #$maps{$HWN}=$hash{'title_'.$rid};
944: unless ($beenhere=~/\&$rid\&/) {
945: $beenhere.=$rid.'&';
946: if (defined($hash{'is_map_'.$rid})) {
947: my $cmap=$hash{'map_type_'.$hash{'map_pc_'.$hash{'src_'.$rid}}};
948: if ( $cmap eq 'sequence' || $cmap eq 'page' ) {
949: $cols[$#cols+1]=0;
950: $P_Order++;
951: $HWN=$P_Order;
952: $mapsort{$HWN} = $rid.':';
953: $IsMap=1;
954:
955: #$maps{&Apache::lonnet::declutter($hash{'src_'.$rid})}=
956: # $hash{'title_'.$rid};
957: }
958: if ((defined($hash{'map_start_'.$hash{'src_'.$rid}})) &&
959: (defined($hash{'map_finish_'.$hash{'src_'.$rid}}))) {
960: my $frid=$hash{'map_finish_'.$hash{'src_'.$rid}};
961:
962: &tracetable($hash{'map_start_'.$hash{'src_'.$rid}},
963: '&'.$frid.'&');
964:
965: $cols[$#cols+1]=($P_Order+1).':'.$frid;
966:
967: my $meta=$hash{'src_'.$frid};
968: my $PartNo = 0;
969: my $Part;
970: # if ($IsMap==0){
971: if ($meta) {
972: if ($meta=~/\.(problem|exam|quiz|assess|survey|form)$/) {
973: foreach (split(/\,/,&Apache::lonnet::metadata($meta,'keys'))) {
974: if ($_=~/^stores\_(\w+)\_tries$/) {
975: $Part=&Apache::lonnet::metadata($meta,$_.'.part');
976: $P_Order++;
977: $mapsort{$HWN} .= '&'.$P_Order;
978: $PartNo++;
979: #$r->print('<br>'.$PartNo.'---'.$P_Order);
980: }
981: foreach my $K(split(/\,/,&Apache::lonnet::metadata($meta,'packages'))) {
982: if ($K=~/^optionresponse\_($Part)\_(\w+)$/) {
983: #$r->print('<br>'.$_.'...'.$P_Order.'---'.$Part);
984: $OpResp{$P_Order}="$frid:$Part";
985: }
986: }
987: }
988: }
989: }
990: }
991: # }
992: } else {
993: $cols[$#cols+1]=($P_Order+1).':'.$rid;
994: my $meta=$hash{'src_'.$rid};
995: my $PartNo = 0;
996: if ($meta) {
997: if ($meta=~/\.(problem|exam|quiz|assess|survey|form)$/) {
998: foreach my $Key(split(/\,/,&Apache::lonnet::metadata($meta,'keys'))) {
999: if ($Key=~/^stores\_(\w+)\_tries$/) {
1000: my $Part=&Apache::lonnet::metadata($meta,$Key.'.part');
1001: $P_Order++;
1002: $mapsort{$HWN} .= '&'.$P_Order;
1003: $PartNo++;
1004: foreach (split(/\,/,&Apache::lonnet::metadata($meta,'packages'))) {
1005: if ($_=~/^optionresponse\_($Part)\_(\w+)$/) {
1006: #$r->print('<br>'.$_.'...'.$P_Order.'---'.$Part);
1007: $OpResp{$P_Order}="$rid:$Part";;
1008: }
1009:
1010: }
1011:
1012: }
1013: }
1014: }
1015: }
1016: }
1017: if (defined($hash{'to_'.$rid})) {
1018: foreach (split(/\,/,$hash{'to_'.$rid})){
1019: &tracetable($hash{'goesto_'.$_},$beenhere);
1020: }
1021: }
1022: }
1023: }
1024:
1025: sub MySort {
1026: if ( $Pos > 0 ) {
1027: if ($ENV{'form.order'} eq 'Descending') {$b <=> $a;}
1028: else { $a <=> $b; }
1029: }
1030: else {
1031: if ($ENV{'form.order'} eq 'Descending') {$b cmp $a;}
1032: else { $a cmp $b; }
1033: }
1034: }
1035:
1036: sub Create_PrgWin {
1037: #----------- Create progress
1038: $r->print(<<ENDPOP);
1039: <script>
1040: popwin=open('','popwin','width=400,height=100');
1041: popwin.document.writeln('<html><body bgcolor="#88DDFF">'+
1042: '<title>LON-CAPA Statistics</title>'+
1043: '<h4>Computation Progress</h4>'+
1044: '<form name=popremain>'+
1045: '<input type=text size=35 name=remaining value=Starting></form>'+
1046: '</body></html>');
1047: popwin.document.close();
1048: </script>
1049: ENDPOP
1050:
1051: $r->rflush();
1052: }
1053:
1054:
1055: sub Update_PrgWin {
1056: #----------- update progress
1057: my $index = shift;
1058: $r->print('<script>popwin.document.popremain.remaining.value="'.
1059: 'Computing '.($index+1).'/'.($#students+1).': '.
1060: $students[$index].'";</script>');
1061: $r->rflush();
1062: }
1063:
1064: sub Close_PrgWin {
1065: #--------------------- close Progress Line
1066: $r->print('<script>popwin.close()</script>');
1067: $r->rflush();
1068: }
1069:
1070: sub Build_Statistics {
1071: &Create_PrgWin();
1072: # ---------------------------- Gathering the Data of students' tries
1073: for (my $index=0;$index<=$#students;$index++) {
1074: &Update_PrgWin($index);
1075: &ExtractStudentData($students[$index]);
1076: }
1077:
1078: # -------------------- sorting the Data
1079: $r->print('<script>popwin.document.popremain.remaining.value="'.
1080: 'Calculating Discrimination Factors...";</script>');
1081:
1082: @list = sort (@list);
1083:
1084: &Discriminant();
1085:
1086: $OpSel2='';
1087: $OpSel1='selected';
1088:
1089: $p_count = 0;
1090: my $nIdx = 0;
1091: my $dummy;
1092: my $p_val;
1093: my $ResId;
1094: my $NoElements = $#list + 1;
1095: #-------------------------------- loop for data representation
1096: foreach (sort keys %mapsort) {
1097: my ($Hid,$pr)=split(/\:/,$mapsort{$_});
1098: my @lpr=split(/\&/,$pr);
1099: &CreateTable(1,$Hid);
1100: for (my $i=1; $i<=$#lpr; $i++) {
1101: my %storestats=();
1102: my ($PrOrd,$Prob,$Tries,$Wrongs,$Code)=split(/\&/,$list[$nIdx]);
1103: my $Temp = $Prob;
1104: my $MxTries = 0;
1105: my $TotalTries = 0;
1106: my $YES = 0;
1107: my $Incorrect = 0;
1108: my $Override = 0;
1109: my $StdNo = 0;
1110: my @StdLst;
1111: while ( $PrOrd == $lpr[$i] )
1112: {
1113: $nIdx++;
1114: $StdNo++;
1115: $StdLst[ $StdNo ] = $Tries;
1116: $TotalTries += $Tries;
1117: if ( $MxTries < $Tries ) { $MxTries = $Tries; }
1118: if ( $Code eq 'C' ){ $YES++; }
1119: elsif( $Code eq 'I' ) { $Incorrect++; }
1120: elsif( $Code eq 'O' ) { $Override++; }
1121: elsif( $Code eq 'U' ) { $StdNo--; }
1122: ($PrOrd,$Prob,$Tries,$Wrongs,$Code)=split(/\&/,$list[$nIdx]);
1123: }
1124:
1125: $p_count++;
1126: my $Dummy;
1127: ($ResId,$Dummy)=split(/\*/,$Temp);
1128:
1129: $Temp = '<a href="'.$hash{'src_'.$ResId}.
1130: '" target="_blank">'.$hash{'title_'.$ResId}.$Dummy.'</a>';
1131:
1132: my $res = &Apache::lonnet::declutter($hash{'src_'.$ResId});
1133: my $urlres=$res;
1134:
1135: $ResId=~/(\d+)\.(\d+)/;
1136: my $Map = &Apache::lonnet::declutter( $hash{'map_id_'.$1} );
1137: $urlres=$Map;
1138:
1139: $res = '<a href="'.$hash{'src_'.$ResId}.'">'.$res.'</a>';
1140: #$Map = '<a href="'.$Map.'">'.$res.'</a>';
1141:
1142: #------------------------ Compute the Average of Tries about one problem
1143: my $Average = ($StdNo) ? $TotalTries/$StdNo : 0;
1144:
1145: $storestats{$ENV{'request.course.id'}.'___'.$urlres.'___timestamp'}=time;
1146: $storestats{$ENV{'request.course.id'}.'___'.$urlres.'___stdno'}=$StdNo;
1147: $storestats{$ENV{'request.course.id'}.'___'.$urlres.'___avetries'}=$Average;
1148:
1149: #-------------------------------- Compute percentage of Wrong tries
1150: my $Wrong = ( $StdNo ) ? 100 * ( $Incorrect / $StdNo ) : 0;
1151:
1152: #-------------------------------- Compute Standard Deviation
1153: my $StdDev = 0;
1154: if ( $StdNo > 1 ) {
1155: for ( my $n = 0; $n < $StdNo; $n++ ) {
1156: my $Dif = $StdLst[ $n ]-$Average;
1157: $StdDev += $Dif*$Dif;
1158: }
1159: $StdDev /= ( $StdNo - 1 );
1160: $StdDev = sqrt( $StdDev );
1161: }
1162:
1163: #-------------------------------- Compute Degree of Difficulty
1164: my $DoDiff = 0;
1165: if( $TotalTries > 0 ) {
1166: $DoDiff = 1 - ( ( $YES + $Override ) / $TotalTries );
1167: # $DoDiff = ($TotalTries)/($YES + $Override+ 0.1);
1168: }
1169:
1170: $storestats{$ENV{'request.course.id'}.'___'.$urlres.'___difficulty'}=$DoDiff;
1171:
1172: #-------------------------------- Compute the Skewness
1173: my $Skewness = 0;
1174: my $Sum = 0;
1175: if ( $StdNo > 0 && $StdDev > 0 ) {
1176: for ( my $n = 0; $n < $StdNo; $n++ ) {
1177: my $Dif = $StdLst[ $n ]-$Average;
1178: $Skewness += $Dif*$Dif*$Dif;
1179: }
1180: $Skewness /= $StdNo;
1181: $Skewness /= $StdDev*$StdDev*$StdDev;
1182: }
1183:
1184: #--------------------- Compute the Discrimination Factors
1185: my ($Up1,$Up2)=split(/\:/,$DisUp{$lpr[$i]});
1186: my ($Lw1,$Lw2)=split(/\:/,$DisLow{$lpr[$i]});
1187: my $Dis1 = $Up1 - $Lw1;
1188: my $Dis2 = $Up2 - $Lw2;
1189: my $_D1 = sprintf("%.2f", $Dis1);
1190: my $_D2 = sprintf("%.2f", $Dis2);
1191:
1192: #----------------- Some restition in presenting the float numbers
1193: my $Avg = sprintf( "%.2f", $Average );
1194: my $Wrng = sprintf( "%.1f", $Wrong );
1195: my $SD = sprintf( "%.1f", $StdDev );
1196: my $DoD = sprintf( "%.2f", $DoDiff );
1197: my $Sk = sprintf( "%.1f", $Skewness );
1198: my $join = $lpr[$i].'&'.$Temp.'&'.$StdNo.'&'.
1199: $TotalTries.'&'.$MxTries.'&'.$Avg.'&'.
1200: $YES.'&'.$Override.'&'.$Wrng.'&'.$DoD.'&'.
1201: $SD.'&'.$Sk.'&'.$_D1.'&'.$_D2.'&'.
1202: $Prob;
1203: $CachData{($p_count-1)}=$join;
1204:
1205: $urlres=~/^(\w+)\/(\w+)/;
1206: if ($StdNo) {
1207: &Apache::lonnet::put('resevaldata',\%storestats,$1,$2);
1208: }
1209: #-------------------------------- Row of statistical table
1210: if ( $DiscFlag == 0 ) {
1211: &TableRow($join,$i,($p_count-1));
1212: }
1213: }
1214: &CloseTable();
1215: }
1216: &Close_PrgWin();
1217: }
1218:
1219: sub Cache_Statistics {
1220: my @list = ();
1221: my $Useful;
1222: my $UnUseful;
1223: # $r->print('<input type="hidden" name="show" value="excel" />'."\n");
1224: my %myHeader = reverse( %Header );
1225: $Pos = $myHeader{$ENV{'form.sort'}};
1226: if ($Pos > 0) {$Pos++;}
1227: $p_count = 0;
1228: foreach my $key( keys %CachData) {
1229: my @Temp=split(/\&/,$CachData{$key});
1230: if ( $Pos == 0 ) {
1231: ($UnUseful,$Useful)=split(/\>/,$Temp[$Pos]);
1232: }
1233: else {
1234: $Useful = $Temp[$Pos];
1235: }
1236: $list[$p_count]=$Useful.'@'.$CachData{$key};
1237: $p_count++;
1238: }
1239:
1240: @list = sort MySort (@list);
1241:
1242: my $nIdx=0;
1243:
1244: if ( $Pos == 0 ) {
1245: foreach (sort keys %mapsort) {
1246: my ($Hid,$pr)=split(/\:/,$mapsort{$_});
1247: &CreateTable(1,$Hid);
1248: my @lpr=split(/\&/,$pr);
1249: for (my $i=1; $i<=$#lpr; $i++) {
1250: my($Pre, $Post) = split(/\@/,$list[$nIdx]);
1251: #$r->print('<br>'.$Pre.'---'.$Post);
1252: &TableRow($Post,$i,$nIdx);
1253: $nIdx++;
1254: }
1255: &CloseTable();
1256: }
1257: }
1258: else {
1259: &CreateTable(0);
1260: for ( my $nIdx = 0; $nIdx < $p_count; $nIdx++ ) {
1261: my($Pre, $Post) = split(/\@/,$list[$nIdx]);
1262: &TableRow($Post,$nIdx,$nIdx);
1263: }
1264: &CloseTable();
1265: }
1266: }
1267:
1268: sub TableRow {
1269: my ($Str,$Idx,$RealIdx)=@_;
1270: my($PrOrd,$Temp,$StdNo,$TotalTries,$MxTries,$Avg,$YES,$Override,
1271: $Wrng,$DoD,$SD,$Sk,$_D1,$_D2,$Prob)=split(/\&/,$Str);
1272: if ($ENV{'form.showcsv'}) {
1273: my ($ResId,$Dummy)=split(/\*/,$Prob);
1274: my $Ptr = "\n".'<br>'.
1275: "\n".'"'.($RealIdx+1).'",'.
1276: "\n".'"'.$hash{'title_'.$ResId}.$Dummy.'",'.
1277: "\n".'"'.$hash{'src_'.$ResId}.'",'.
1278: "\n".'"'.$StdNo.'",'.
1279: "\n".'"'.$TotalTries.'",'.
1280: "\n".'"'.$MxTries.'",'.
1281: "\n".'"'.$Avg.'",'.
1282: "\n".'"'.$YES.'",'.
1283: "\n".'"'.$Override.'",'.
1284: "\n".'"'.$Wrng.'",'.
1285: "\n".'"'.$DoD.'",'.
1286: "\n".'"'.$SD.'",'.
1287: "\n".'"'.$Sk.'",'.
1288: "\n".'"'.$_D1.'",'.
1289: "\n".'"'.$_D2.'"';
1290: $r->print("\n".$Ptr);
1291: }
1292: else{
1293: my $Ptr = "\n".'<tr>'.
1294: "\n".'<td>'.($RealIdx+1).'</td>'.
1295: # "\n".'<td>'.$PrOrd.$Temp.'</td>'.
1296: "\n".'<td>'.$Temp.'</td>'.
1297: "\n".'<td bgcolor='.$color{"yellow"}.'> '.$StdNo.'</td>'.
1298: "\n".'<td bgcolor='.$color{"yellow"}.'>'.$TotalTries.'</td>'.
1299: "\n".'<td bgcolor='.$color{"yellow"}.'>'.$MxTries.'</td>'.
1300: "\n".'<td bgcolor='.$color{"gb"}.'>'.$Avg.'</td>'.
1301: "\n".'<td bgcolor='.$color{"gb"}.'> '.$YES.'</td>'.
1302: "\n".'<td bgcolor='.$color{"gb"}.'> '.$Override.'</td>'.
1303: "\n".'<td bgcolor='.$color{"red"}.'> '.$Wrng.'</td>'.
1304: "\n".'<td bgcolor='.$color{"red"}.'> '.$DoD.'</td>'.
1305: "\n".'<td bgcolor='.$color{"green"}.'> '.$SD.'</td>'.
1306: "\n".'<td bgcolor='.$color{"green"}.'> '.$Sk.'</td>'.
1307: "\n".'<td bgcolor='.$color{"purple"}.'> '.$_D1.'</td>'.
1308: "\n".'<td bgcolor='.$color{"purple"}.'> '.$_D2.'</td>';
1309: $r->print("\n".$Ptr.'</tr>' );
1310: }
1311: $GraphDat{$RealIdx}=$DoD.':'.$Wrng;
1312: }
1313:
1314: # ------------------------------------------- Prepare data for Graphical chart
1315:
1316: sub GetGraphData {
1317: my $ylab = shift;
1318: my $Col;
1319: my $data='';
1320: my $count = 0;
1321: my $Max = 0;
1322: my $cid=$ENV{'request.course.id'};
1323: my $GraphDB = "/home/httpd/perl/tmp/$ENV{'user.name'}".
1324: "_$ENV{'user.domain'}_$cid\_graph.db";
1325: foreach (keys %GraphDat) {delete $GraphDat{$_};}
1326: if (-e "$GraphDB") {
1327: if (tie(%GraphDat,'GDBM_File',"$GraphDB",&GDBM_READER,0640)) {
1328: if ( $ylab eq 'DoDiff Graph' ) {
1329: $ylab = 'Degree-of-Difficulty';
1330: $Col = 0;
1331: }
1332: else {
1333: $ylab = 'Wrong-Percentage';
1334: $Col = 1;
1335: }
1336: foreach (sort NumericSort keys %GraphDat) {
1337: my @Temp=split(/\:/,$GraphDat{$_});
1338: my $inf = $Temp[$Col];
1339: if ( $Max < $inf ) {$Max = $inf;}
1340: $data .= $inf.',';
1341: $count++;
1342: }
1343: if ( $Max > 1 ) {
1344: $Max += (10 - $Max % 10);
1345: $Max = int($Max);
1346: }
1347: else { $Max = 1; }
1348: untie(%GraphDat);
1349: my $Course = $ENV{'course.'.$cid.'.description'};
1350: $Course =~ s/\ /"_"/eg;
1351: $GData=$Course.'&'.'Problems'.'&'.$ylab.'&'.$Max.'&'.$count.'&'.$data;
1352: }
1353: else {
1354: $r->print("Unable to tie hash to db file");
1355: }
1356: }
1357: }
1358:
1359:
1360: sub initial {
1361: # --------------------------------- Initialize the global varaibles
1362: undef @students;
1363: undef @cols;
1364: undef %maps;
1365: undef %section;
1366: undef %StuBox;
1367: undef @list;
1368: undef %CachData;
1369: undef %GraphDat;
1370: undef %DiscFac;
1371: undef %OpResp;
1372: undef %ConceptData;
1373: undef $CurMap;
1374: undef $CurSec;
1375: undef $CurStu;
1376: undef $p_count;
1377: undef $Pos;
1378: undef $GData;
1379: $DiscFlag=0;
1380: $P_Order=100000;
1381: $HWN=$P_Order;
1382: &setbgcolor(0);
1383: }
1384:
1385: # For loading the colored table for display or un-colored for print
1386: sub setbgcolor {
1387: my $PrintTable=shift;
1388: undef %color;
1389: if ($PrintTable){
1390: $color{"gb"}="#FFFFFF";
1391: $color{"red"}="#FFFFFF";
1392: $color{"yellow"}="#FFFFFF";
1393: $color{"green"}="#FFFFFF";
1394: $color{"purple"}="#FFFFFF";
1395: } else {
1396: $color{"gb"}="#DDFFFF";
1397: $color{"red"}="#FFDDDD";
1398: $color{"yellow"}="#EEFFCC";
1399: $color{"green"}="#DDFFDD";
1400: $color{"purple"}="#FFDDFF";
1401: }
1402: }
1403:
1404: # my $CacheDB = "/home/httpd/perl/tmp/$ENV{'user.name'}".
1405: # "_$ENV{'user.domain'}_$cid\_classlist.db";
1406: # if (-e "$CacheDB") {
1407: # if (tie(%students,'GDBM_File',"$CacheDB",&GDBM_READER,0640)) {
1408: # &CachClassList();
1409: # }
1410: # else {
1411: # $r->print("Unable to tie hash to db file");
1412: # }
1413: # }
1414: # else {
1415: # if (tie(%students,'GDBM_File',$CacheDB,&GDBM_WRCREAT,0640)) {
1416: # &MakeClassList();
1417: # }
1418: # else {
1419: # $r->print("Unable to tie hash to db file");
1420: # }
1421: # }
1422: # untie(%students);
1423:
1424: sub ClassList {
1425:
1426: &GetStatus();
1427:
1428: $cid=$ENV{'request.course.id'};
1429: my ($cdom,$cnum)=split(/\_/,$cid);
1430: # ----------------------- Get first and last resource, see if there is anything
1431: $firstres=$hash{'map_start_/res/'.$ENV{'request.course.uri'}};
1432: $lastres=$hash{'map_finish_/res/'.$ENV{'request.course.uri'}};
1433: if (($firstres) && ($lastres)) {
1434:
1435: my $StudNo = 0;
1436: my $now=time;
1437: my %classlist=&Apache::lonnet::dump('classlist',$cdom,$cnum);
1438:
1439: my ($checkForError)=keys(%classlist);
1440: if($checkForError=~/^(con_lost|error|no_such_host)/i) {
1441: $r->print('<h1>Could not access course data</h1>');
1442: } else {
1443: foreach my $name (sort keys (%classlist)) {
1444: my $value=$classlist{$name};
1445: my ($end,$start)=split(/\:/,$value);
1446: my $active=1;
1447: my $Status=$ENV{'form.status'};
1448: $Status = ($Status) ? $Status : 'Active';
1449: if ( ( ($end) && $now > $end ) &&
1450: ( ($Status eq 'Active') ) ) { $active=0; }
1451: if ( ($Status eq 'Expired') &&
1452: ($end == 0 || $now < $end) ) { $active=0; }
1453: if ($active) {
1454: my $thisindex=$#students+1;
1455: $students[$thisindex]=$name;
1456: my ($sname,$sdom)=split(/\:/,$name);
1457: my $ssec=&usection($sdom,$sname,$cid,$Status);
1458: if ($ssec==-1 || $ssec eq 'adm' ) {next;}
1459: $ssec=($ssec) ? $ssec : '(none)';
1460: #$ssec=(int($ssec)) ? int($ssec) : $ssec;
1461: $section{$ssec}=$ssec;
1462: if ($CurSec eq 'All Sections' || $ssec eq $CurSec) {
1463: $students[$StudNo]=$name;
1464: $StuBox{$sname}=$sdom;
1465: }
1466: $StudNo++;
1467: }
1468: }
1469: }
1470:
1471: $r->print("Total number of students : ".($#students+1));
1472: $r->rflush();
1473: # --------------- Find all assessments and put them into some linear-like order
1474: &tracetable($firstres,'&'.$lastres.'&');
1475: # my $c=0;
1476: # foreach (sort keys %mapsort) {
1477: # $r->print('<br>'.$c.')'.$_.' ... '.$mapsort{$_});
1478: # $c++;
1479: # }
1480: # my $c=1;
1481: # foreach (sort keys %OpResp) {
1482: # $r->print('<br>'.$c.')'.$_.' ... '.$OpResp{$_}.' ... '.$hash{'src_'.$OpResp{$_}});
1483: # $c++;
1484: # }
1485:
1486: }
1487:
1488: # ------------------------------------------------------------- End render page
1489: else {
1490: $r->print('<h3>Undefined course sequence</h3>');
1491: }
1492: }
1493:
1494:
1495: sub Title {
1496: $r->print('<html><head><title>LON-CAPA Statistics</title></head>');
1497: $r->print('<body bgcolor="#FFFFFF">'.
1498: '<script>window.focus(); window.width=500;window.height=500;</script>'.
1499: '<img align=right src=/adm/lonIcons/lonlogos.gif>');
1500: # ---------------------------------------------------------------- Course title
1501: $r->print('<h1> Course : "'.
1502: $ENV{'course.'.$ENV{'request.course.id'}.
1503: '.description'}.'"</h1><h2>'.localtime().'</h2>');
1504: # ------------------------------- This is going to take a while, produce output
1505: $r->rflush();
1506: }
1507:
1508:
1509: sub CreateForm {
1510: $r->print("\n".'<form name=stat method=post action="/adm/statistics" >');
1511: my $content = $ENV{'form.sort'};
1512: if (!($ENV{'form.showcsv'}) &&
1513: ($content eq '' || $content eq 'Return to Menu')) {
1514: my $Ptr = '<h3>';
1515: $Ptr .= '<input type=submit name=sort value="Problem Stats"/>';
1516: $Ptr .= '<br><br>';
1517: $Ptr .= '<input type=submit name=sort value="Problem Analysis"/>';
1518: $Ptr .= '<br><br>';
1519: $Ptr .= '<input type=submit name=sort value="Student Assessment"/>';
1520: $Ptr .= '</h3>';
1521: #$Ptr .= '<input type=submit name=sort value="Activity Log"/>';
1522: $r->print( $Ptr );
1523: }
1524: else {
1525: &ClassList();
1526: if ( $content eq 'Student Assessment' ||
1527: $content eq 'Create Student Report' ) {
1528: &MapSecOptions();
1529: &StudentOptions();
1530: &StudentReport($CurStu,$StuBox{"$CurStu"});
1531: }
1532: elsif ( $content eq 'Problem Analysis' ) {
1533: &AnalyzeProblem();
1534: }
1535: else {
1536: &MapSecOptions();
1537: &PreStatTable();
1538: }
1539: }
1540: }
1541:
1542:
1543: sub Menu {
1544: &initial();
1545: # my $fn=$ENV{'request.course.fn'};
1546: # $r->print( '<br>'.$fn.'<br>' );
1547:
1548: # $Apache::lonxml::debug=1;
1549: # &Apache::lonhomework::showhash(%ENV);
1550: # $Apache::lonxml::debug=0;
1551:
1552: &Title();
1553: my $InpStr = $ENV{'form.sort'};
1554: if ($InpStr eq 'Activity Log') {
1555: &Activity();
1556: }
1557: elsif ($InpStr=~/^Analyze\_/) {
1558: &ClassList();
1559: &ShowOpGraph($InpStr,$ENV{'form.interval'});
1560: }
1561: elsif ( $InpStr eq 'DoDiff Graph' || $InpStr eq '%Wrong Graph' ) {
1562: &GetGraphData($InpStr);
1563: $r->print('<IMG src="/cgi-bin/graph.gif?'.$GData.'" />');
1564: }
1565: else {
1566: &CreateForm();
1567: $r->print("\n".'</form>');
1568: }
1569: $r->print("\n".'</body>'.
1570: "\n".'</html>');
1571: $r->rflush();
1572: }
1573:
1574:
1575: sub StudentOptions {
1576: my $OpSel5='';
1577: $CurStu = $ENV{'form.student'};
1578: if ( $CurStu eq '' ) {
1579: $CurStu = 'All Students';
1580: $OpSel5 = 'selected';
1581: }
1582: my $Ptr ='';
1583: # ----------------------------------- Loading the Students Combobox
1584: $Ptr .= '<br><b>Select Student</b>'."\n".
1585: '<select name="student">'."\n".
1586: '<option '.$OpSel5.'>All Students</option>';
1587: foreach my $key ( sort keys %StuBox ) {
1588: $Ptr .= '<option';
1589: if ($CurStu eq $key) {$Ptr .= ' selected';}
1590: $Ptr .= '>'.$key."</option>\n";
1591: }
1592: $Ptr .= '</select>';
1593: $Ptr .= '<br><input type="submit" name="sort" value="Create Student Report" />';
1594: $r->print( $Ptr );
1595: $r->rflush();
1596: }
1597:
1598:
1599: sub GetStatus {
1600: $OpSel1='';
1601: $OpSel2='';
1602: $OpSel3='';
1603: $OpSel4='';
1604:
1605: if ( $ENV{'form.order'} eq 'Descending' ) { $OpSel2='selected'; }
1606: else { $OpSel1 = 'selected'; }
1607:
1608: my %myHeader = reverse( %Header );
1609: $Pos = $myHeader{$ENV{'form.sort'}};
1610: if ($Pos == 0) {
1611: $OpSel1 = 'selected';
1612: $ENV{'form.order'}='Ascendig';
1613: }
1614:
1615: $CurMap = $ENV{'form.maps'};
1616: if ( $CurMap eq '' ) {
1617: $CurMap = 'All Maps';
1618: $OpSel3 = 'selected';
1619: }
1620: $CurSec = $ENV{'form.section'};
1621: if ( $CurSec eq '' ) {
1622: $CurSec = 'All Sections';
1623: $OpSel4 = 'selected';
1624: }
1625: }
1626:
1627:
1628: sub MapSecOptions {
1629: # ----------------------------------- Loading the Maps Combobox
1630: my $Ptr = '<br>';
1631: $Ptr .= '<input type="submit" name="sort" value="Return to Menu" />';
1632: $Ptr .= '<br><b> Select Map </b>'."\n".
1633: '<select name="maps">'."\n".
1634: '<option '.$OpSel3.'>All Maps</option>';
1635: foreach my $key ( sort keys %maps ) {
1636: $Ptr .= '<option';
1637: if ($CurMap eq $key) {$Ptr .= ' selected';}
1638: $Ptr .= '>'.$key."</option>\n";
1639: }
1640: $Ptr .= '</select>';
1641: $Ptr .= ' ';
1642:
1643: # ----------------------------------- Loading the Sections Combobox
1644: $Ptr .= '<br><b>Select Section</b>'."\n".
1645: '<select name="section">'."\n".
1646: '<option '.$OpSel4.'>All Sections</option>';
1647: foreach my $key ( sort keys %section ) {
1648: $Ptr .= '<option';
1649: if ($CurSec eq $key) {$Ptr .= ' selected';}
1650: $Ptr .= '>'.$key."</option>"."\n";
1651: }
1652: $Ptr .= '</select>'."\n";
1653:
1654: $r->print( $Ptr );
1655: $r->rflush();
1656: }
1657:
1658:
1659: # ================================================================ Main Handler
1660:
1661: sub handler {
1662: $r=shift;
1663:
1664: if (&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'})) {
1665: # ------------------------------------------- Set document type for header only
1666: if ($r->header_only) {
1667: if ($ENV{'browser.mathml'}) {
1668: $r->content_type('text/xml');
1669: }
1670: else {
1671: $r->content_type('text/html');
1672: }
1673: $r->send_http_header;
1674: return OK;
1675: }
1676: my $requrl=$r->uri;
1677: # ----------------------------------------------------------------- Tie db file
1678:
1679: undef %hash;
1680:
1681: if ($ENV{'request.course.fn'}) {
1682: my $fn=$ENV{'request.course.fn'};
1683: if (-e "$fn.db") {
1684: if (tie(%hash,'GDBM_File',"$fn.db",&GDBM_READER,0640)) {
1685: # ------------------------------------------------------------------- Hash tied
1686: $r->content_type('text/html');
1687: $r->send_http_header;
1688: &Menu();
1689: }
1690: else {
1691: $r->content_type('text/html');
1692: $r->send_http_header;
1693: $r->print('<html><body>Coursemap undefined.</body></html>');
1694: }
1695: # ------------------------------------------------------------------ Untie hash
1696: unless (untie(%hash)) {
1697: &Apache::lonnet::logthis("<font color=blue>WARNING: ".
1698: "Could not untie coursemap $fn (browse).</font>");
1699: }
1700:
1701: # -------------------------------------------------------------------- All done
1702: return OK;
1703: # ----------------------------------------------- Errors, hash could no be tied
1704: }
1705: }
1706: else {
1707: $ENV{'user.error.msg'}="$requrl:bre:0:0:Course not initialized";
1708: return HTTP_NOT_ACCEPTABLE;
1709: }
1710: }
1711: else {
1712: $ENV{'user.error.msg'}=
1713: $r->uri.":vgr:0:0:Cannot view grades for complete course";
1714:
1715: return HTTP_NOT_ACCEPTABLE;
1716: }
1717: }
1718: 1;
1719: __END__
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/back.gif){kind=icon}
Return to lonstatistics.pm CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [LON-CAPA] / loncom / interface