1: # The LearningOnline Network with CAPA
2: # (Publication Handler
3: #
4: # $Id: lonstatistics.pm,v 1.19 2002/05/16 01:27:05 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 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 $P_Order;
81: my %foil_to_concept;
82: my @Concepts;
83: my %ConceptData;
84: my %Header = (0,"Homework Sets Order",1,"#Stdnts",2,"Tries",3,"Mod",
85: 4,"Mean",5,"#YES",6,"#yes",7,"%Wrng",8,"DoDiff",
86: 9,"S.D.",10,"Skew.",11,"D.F.1st",12,"D.F.2nd");
87: my %Answer = ();
88:
89: sub InitAnalysis {
90: my ($rid, $student)=@_;
91: my ($uname,$udom)=split(/\:/,$student);
92: $rid=~/(\d+)\.(\d+)/;
93: my $symb=&Apache::lonnet::declutter($hash{'map_id_'.$1}).'___'.$2.'___'.
94: &Apache::lonnet::declutter($hash{'src_'.$rid});
95: my $URI = $hash{'src_'.$rid};
96: my $Answ=&Apache::lonnet::ssi($URI,('grade_target' => 'analyze',
97: 'grade_username' => $uname,
98: 'grade_domain' => $udom,
99: 'grade_courseid' => $cid,
100: 'grade_symb' => $symb));
101: # my $Answ=&Apache::lonnet::ssi($URI,('grade_target' => 'analyze'));
102:
103: (my $garbage,$Answ)=split(/_HASH_REF__/,$Answ,2);
104: %Answer=();
105: %Answer=&Apache::lonnet::str2hash($Answ);
106:
107: my $parts='';
108: foreach my $elm (@{$Answer{"parts"}}) {
109: $parts.="$elm,";
110: }
111: chop($parts);
112: my $conc='';
113: foreach my $elm (@{$Answer{"$parts.concepts"}}) {
114: $conc.="$elm@";
115: }
116: chop($conc);
117:
118: @Concepts=split(/\@/,$conc);
119: foreach my $concept (@{$Answer{"$parts.concepts"}}) {
120: foreach my $foil (@{$Answer{"$parts.concept.$concept"}}) {
121: $foil_to_concept{$foil} = $concept;
122: #$ConceptData{$foil} = $Answer{"$parts.foil.value.$foil"};
123: }
124: }
125: return $symb;
126: }
127:
128:
129: sub Interval {
130: my ($rid,$part,$symb)=@_;
131: my $Int=$ConceptData{"Interval"};
132: my $due = &Apache::lonnet::EXT('resource.$part.duedate',$symb)+1;
133: my $opn = &Apache::lonnet::EXT('resource.$part.opendate',$symb);
134: my $add=int(($due-$opn)/$Int);
135: $ConceptData{"Int.0"}=$opn;
136: for (my $i=1;$i<$Int;$i++) {
137: $ConceptData{"Int.$i"}=$opn+$i*$add;
138: }
139: $ConceptData{"Int.$Int"}=$due;
140: for (my $i=0;$i<$Int;$i++) {
141: for (my $n=0; $n<=$#Concepts; $n++ ) {
142: my $tmp=$Concepts[$n];
143: $ConceptData{"$tmp.$i.true"}=0;
144: $ConceptData{"$tmp.$i.false"}=0;
145: }
146: }
147: }
148:
149:
150: sub ShowOpGraph {
151: my ($InpStr, $Int_No)=@_;
152: my ($rid,$part)=split(/\:/,substr($InpStr,8));
153: $ConceptData{"Interval"}=$Int_No;
154: #Initialize the option response true answers
155: my $symb=&InitAnalysis($rid,$students[0]);
156: #compute the intervals
157: &Interval($rid,$part,$symb);
158: my $URI = $hash{'src_'.$rid};
159: my $Src = $hash{'title_'.$rid};
160: $Src =~ s/\ /"_"/eg;
161: $r->print('<br><b>'.$URI.'</b>');
162: $r->rflush();
163:
164: #Java script Progress window
165: &Create_PrgWin();
166: &Update_PrgWin("Starting to analyze problem");
167: for (my $index=0;$index<=$#students;$index++) {
168: &Update_PrgWin($index);
169: &OpStatus($rid,$students[$index]);
170: }
171: &Close_PrgWin();
172:
173: $r->print('<br>');
174: for (my $k=0; $k<$Int_No; $k++ ) {
175: &DrawGraph($k,$Src);
176: }
177: #$Apache::lonxml::debug=1;
178: #&Apache::lonhomework::showhash(%ConceptData);
179: #$Apache::lonxml::debug=0;
180: my $Answ=&Apache::lonnet::ssi($URI);
181: $r->print("<br><b>Here you can see the Problem:</b><br>$Answ");
182: }
183:
184:
185: sub DrawGraph {
186: my ($k,$Src)=@_;
187: my $Max=0;
188: my @data1;
189: my @data2;
190: my $Correct=0;
191: my $Wrong=0;
192: # Adjust Data and find the Max
193: for (my $n=0; $n<=$#Concepts; $n++ ) {
194: my $tmp=$Concepts[$n];
195: $data1[$n]=$ConceptData{"$tmp.$k.true"};
196: $Correct+=$data1[$n];
197: $data2[$n]=$ConceptData{"$tmp.$k.false"};
198: $Wrong+=$data2[$n];
199: my $Sum=$data1[$n]+$data2[$n];
200: if ( $Max<$Sum ) {$Max=$Sum;}
201: }
202: for (my $n=0; $n<=$#Concepts; $n++ ) {
203: if ($data1[$n]+$data2[$n]<$Max) {
204: $data2[$n]+=$Max-($data1[$n]+$data2[$n]);
205: }
206: }
207: my $P_No = $#data1+1;
208: # $r->print('<br><b>From: ['.localtime($ConceptData{'Int.'.($k-1)}).
209: # '] To: ['.localtime($ConceptData{"Int.$k"}).']</b>');
210: my $Str = "\n".'<table border=2>'.
211: "\n".'<tr>'.
212: "\n".'<th> # </th>'.
213: "\n".'<th> Concept </th>'.
214: "\n".'<th> Correct </th>'.
215: "\n".'<th> Wrong </th>'.
216: "\n".'</tr>';
217:
218: for (my $n=0; $n<=$#Concepts; $n++ ) {
219: $Str .= "\n"."<tr>".
220: "\n"."<td>".($n+1)."</td>".
221: "\n"."<td bgcolor=#FFFFDD> ".$Concepts[$n]." </td>".
222: "\n"."<td bgcolor=#DDFFDD> ".$data1[$n]." </td>".
223: "\n"."<td bgcolor=#FFDDDD> ".$data2[$n]." </td>".
224: "\n"."</tr>";
225: }
226: #$Apache::lonxml::debug=1;
227: #&Apache::lonhomework::showhash(%ConceptData);
228: #$Apache::lonxml::debug=0;
229:
230: # $Str.='<td></td><td><b>From:['.localtime($ConceptData{'Int.$k'}).
231: # '] To: ['.localtime($ConceptData{'Int.'.($k+1)}).
232: # "]</b></td><td>$Correct</td><td>$Wrong</td>";#
233:
234: $Str .= "\n".'</table>';
235:
236: # $r->print($Str);
237:
238: if ( $Max > 1 ) {
239: $Max += (10 - $Max % 10);
240: $Max = int($Max);
241: } else { $Max = 1; }
242:
243:
244: my $Titr=($ConceptData{'Interval'}>1) ? $Src.'_interval_'.($k+1) : $Src;
245: # $GData=$Titr.'&Concepts'.'&'.'Answers'.'&'.$Max.'&'.$P_No.'&'.$data1.'&'.$data2;
246: $GData="$Titr&Concepts&Answers&$Max&$P_No&".
247: (join(',',@data1)).'&'.(join(',',@data2));
248:
249: $r->print('<IMG src="/cgi-bin/graph.gif?'.$GData.'" border=1/>');
250: }
251:
252:
253: sub AnalyzeProblem {
254: # selecting the number of intervals
255: my $OpSel='';
256: my $CurInt = $ENV{'form.interval'};
257: if ($CurInt eq '') {$CurMap = '1';}
258: my $Ptr = '<b>Select number of intervals</b>'."\n".
259: '<select name="interval">'."\n";
260: for (my $n=1;$n<=7;$n++) {
261: $Ptr .= '<option';
262: if ($CurInt eq $n) {$Ptr .= ' selected';}
263: $Ptr .= '>'.$n."</option>"."\n";
264: }
265: $Ptr .= '</select>'."\n";
266: $r->print( $Ptr );
267:
268: #the table of option response problems
269: $r->print('<br><b> Option Response Problems in this course:</b><br><br>');
270: my $Str = "\n".'<table border=2>'.
271: "\n".'<tr>'.
272: "\n".'<th> # </th>'.
273: "\n".'<th> Problem Title </th>'.
274: "\n".'<th> Resouse </th>'.
275: "\n".'<th> Address </th>'.
276: "\n".'</tr>';
277:
278: my $P_No=1;
279: foreach (sort keys %OpResp) {
280: my ($rid,$part)=split(/\:/,$OpResp{$_});
281: my $Temp = '<a href="'.$hash{'src_'.$rid}.
282: '" target="_blank">'.$hash{'title_'.$rid}.'</a>';
283: $Str .= "\n"."<tr>".
284: "\n"."<td> $P_No </td>".
285: "\n"."<td bgcolor=#DDFFDD> ".$Temp." </td>".
286: "\n"."<td bgcolor=#EEFFCC> ".$hash{'src_'.$rid}." </td>".
287: "\n"."<td> ".'<input type="submit" name="sort" value="'.'Analyze_'.$rid.'" />'.'</td>'.
288: "\n"."</tr>";
289: $P_No++;
290: }
291: $Str .= "\n".'</table>';
292: $Str .= "\n".'</form>';
293: $r->print($Str);
294: $r->rflush();
295: }
296:
297:
298: sub Decide {
299: #deciding the true or false answer belongs to each interval
300: my ($type,$foil,$time)=@_;
301: my $k=0;
302: while ($time>$ConceptData{'Int.'.($k+1)} &&
303: $k<$ConceptData{'Interval'}) {$k++;}
304: $ConceptData{"$foil_to_concept{$foil}.$k.$type"}++;
305: }
306:
307:
308: #restore the student submissions and finding the result
309: sub OpStatus {
310: my ($rid,$student)=@_;
311: my ($uname,$udom)=split(/\:/,$student);
312: my $code='U';
313: $rid=~/(\d+)\.(\d+)/;
314: my $symb=&Apache::lonnet::declutter($hash{'map_id_'.$1}).'___'.$2.'___'.
315: &Apache::lonnet::declutter($hash{'src_'.$rid});
316: my %reshash=&Apache::lonnet::restore($symb,$cid,$udom,$uname);
317: my @True = ();
318: my @False = ();
319: my $flag=0;
320: if ($reshash{'version'}) {
321: my $tries=0;
322: &Apache::lonhomework::showhash(%Answer);
323: for (my $version=1;$version<=$reshash{'version'};$version++) {
324: my $time=$reshash{"$version:timestamp"};
325:
326: foreach my $key (sort(split(/\:/,$reshash{$version.':keys'}))) {
327: if (($key=~/\.(\w+)\.(\w+)\.submission$/)) {
328: my $Id1 = $1; my $Id2 = $2;
329: #check if this is a repeat submission, if so skip it
330: if ($reshash{"$version:resource.$Id1.previous"}) { next; }
331: #if no solved this wasn't a real submission, ignore it
332: if (!defined($reshash{"$version:resource.$Id1.solved"})) {
333: &Apache::lonxml::debug("skipping ");
334: next;
335: }
336: my $Resp = $reshash{"$version:$key"};
337: my %submission=&Apache::lonnet::str2hash($Resp);
338: foreach (keys %submission) {
339: my $Ansr = $Answer{"$Id1.$Id2.foil.value.$_"};
340: if ($submission{$_}) {
341: if ($submission{$_} eq $Ansr) {
342: &Decide("true",$_,$time );
343: }
344: else {&Decide("false",$_,$time );}
345: }
346: }
347: }
348: }
349: }
350: }
351: }
352:
353:
354: #------- Processing upperlist and lowerlist according to each problem
355: sub ProcessDisc {
356: my @List = @_;
357: @List = sort (@List);
358: my $Count = $#List+1;
359: my $Prb;
360: my @Dis;
361: my $Slvd=0;
362: my $tmp;
363: my $Sum1=0;
364: my $Sum2=0;
365: my $nIdx=0;
366: my $nStud=0;
367: my %Proc;
368: undef %Proc;
369: while ($nIdx<$Count) {
370: ($Prb,$tmp)=split(/\=/,$List[$nIdx]);
371: @Dis=split(/\+/,$tmp);
372: my $Temp = $Prb;
373: do {
374: $nIdx++;
375: $nStud++;
376: $Sum1 += $Dis[0];
377: $Sum2 += $Dis[1];
378: ($Prb,$tmp)=split(/\=/,$List[$nIdx]);
379: @Dis=split(/\+/,$tmp);
380: } while ( $Prb eq $Temp && $nIdx < $Count );
381: # $Proc{$Temp}=($Sum1/$nStud).':'.$nStud;
382: $Proc{$Temp}=($Sum1/$nStud).':'.($Sum2/$nStud);
383: # $r->print("$nIdx) $Temp --> ($nStud) $Proc{$Temp} <br>");
384: $Sum1=0;
385: $Sum2=0;
386: $nStud=0;
387: }
388: return %Proc;
389: }
390:
391:
392: #------- Creating Discimination factor
393: sub Discriminant {
394: my $Count=0;
395: foreach (keys(%DiscFac)){
396: $Count++;
397: }
398: $UpCnt = int(0.27*$Count);
399: my $low=0;
400: my $up=$Count-$UpCnt;
401: my @UpList=();
402: my @LowList=();
403: $Count=0;
404: foreach my $key (sort(keys(%DiscFac))){
405: $Count++;
406: #$r->print("<br>$Count) $key = $DiscFac{$key}");
407: if ($low < $UpCnt || $Count > $up) {
408: $low++;
409: my $str=$DiscFac{$key};
410: foreach(split(/\:/,$str)){
411: if ($_) {
412: if ($low<$UpCnt){push(@LowList,$_);}
413: else {push(@UpList,$_);}
414: }
415: }
416: }
417: }
418: %DisUp=&ProcessDisc(@UpList);
419: %DisLow=&ProcessDisc(@LowList);
420: }
421:
422:
423: sub NumericSort {
424: $a <=> $b;
425: }
426:
427: # ------ Create different Student Report
428: sub StudentReport {
429: my ($sname,$sdom)=@_;
430: if ( $sname eq 'All Students' ) {
431: $r->print( '<h3><font color=blue>WARNING:
432: Please select a student</font></h3>' );
433: return;
434: }
435: my %result = &Apache::lonnet::dump($cid,$sdom,$sname);
436: my $ResId;
437: my $PrOrd;
438: my $Code;
439: my $Tries;
440: my $TotalTries = 0;
441: my $ParCr = 0;
442: my $Wrongs;
443: my %TempHash;
444: my $Version;
445: my $LatestVersion;
446: my $PtrTry='';
447: my $PtrCod='';
448: my $SetNo=0;
449: my $Str = "\n".'<table border=2>'.
450: "\n".'<tr>'.
451: "\n".'<th> # </th>'.
452: "\n".'<th> Set Title </th>'.
453: "\n".'<th> Results </th>'.
454: "\n".'<th> Tries </th>'.
455: "\n".'</tr>';
456: my ($temp)=keys(%result);
457: unless ($temp=~/^error\:/) {
458: foreach my $CurCol (@cols) {
459: if (!$CurCol){
460: my $Set=&Apache::lonnet::declutter($hash{'map_id_'.$1});
461: if ( $Set ) {
462: $SetNo++;
463: $Str .= "\n"."<tr>".
464: "\n"."<td> $SetNo </td>".
465: "\n"."<td> $Set </td>".
466: "\n"."<td> $PtrCod </td>".
467: "\n"."<td> $PtrTry</td>".
468: "\n"."</tr>";
469: }
470: $PtrTry='';
471: $PtrCod='';
472: next;
473: }
474: ($PrOrd,$ResId)=split(/\:/,$CurCol);
475: $ResId=~/(\d+)\.(\d+)/;
476: my $Map = &Apache::lonnet::declutter( $hash{'map_id_'.$1} );
477: if ( $CurMap ne 'All Maps' ) {
478: my ( $ResMap, $NameMap ) = split(/\=/,$CurMap);
479: if ( $Map ne $ResMap ) { next; }
480: }
481: my $meta=$hash{'src_'.$ResId};
482: my $PartNo = 0;
483: undef %TempHash;
484: foreach (split(/\,/,&Apache::lonnet::metadata($meta,'keys'))){
485: if ($_=~/^stores\_(\w+)\_tries$/) {
486: my $Part=&Apache::lonnet::metadata($meta,$_.'.part');
487: if ( $TempHash{"$Part"} eq '' ) {
488: $TempHash{"$Part"} = $Part;
489: $TempHash{$PartNo}=$Part;
490: $TempHash{"$Part.Code"} = '-';
491: $TempHash{"$Part.PrOrd"} = $PrOrd+$PartNo;
492: $PartNo++;
493: }
494: }
495: }
496:
497: my $Prob = $Map.'___'.$2.'___'.
498: &Apache::lonnet::declutter( $hash{'src_'.$ResId} );
499: $Code='U';
500: $Tries = 0;
501: $Wrongs = 0;
502: $LatestVersion = $result{"version:$Prob"};
503: if ( $LatestVersion ) {
504: for ( my $Version=1; $Version<=$LatestVersion; $Version++ ) {
505: my $vkeys = $result{"$Version:keys:$Prob"};
506: my @keys = split(/\:/,$vkeys);
507:
508: foreach my $Key (@keys) {
509: if (($Key=~/\.(\w+)\.solved$/) && ($Key!~/^\d+\:/)) {
510: my $Part = $1;
511: $Tries = $result{"$Version:$Prob:resource.$Part.tries"};
512: $TempHash{"$Part.Tries"} = ($Tries) ? $Tries : 0;
513: $TotalTries += $Tries;
514: my $Val = $result{"$Version:$Prob:resource.$Part.solved"};
515: if ( $Val eq 'correct_by_student' )
516: { $Wrongs = $Tries - 1; $Code = 'Y'; }
517: elsif ( $Val eq 'correct_by_override' )
518: { $Wrongs = $Tries - 1; $Code = 'y'; }
519: elsif ( $Val eq 'incorrect_attempted' ||
520: $Val eq 'incorrect_by_override' )
521: { $Wrongs = $Tries; $Code = 'N'; }
522: $TempHash{"$Part.Code"} = $Code;
523: $TempHash{"$Part.Wrongs"} = $Wrongs;
524: }
525: }
526: }
527: for ( my $n = 0; $n < $PartNo; $n++ ) {
528: my $part = $TempHash{$n};
529: if ($PtrTry ne '') {$PtrTry .= ',';}
530: $PtrTry .= "$TempHash{$part.'.Tries'}";
531: $PtrCod .= "$TempHash{$part.'.Code'}";
532: }
533: }
534: else {
535: for(my $n=0; $n<$PartNo; $n++) {
536: if ($PtrTry ne '') {$PtrTry .= ',';}
537: $PtrTry .= "0";
538: $PtrCod .= "-";
539: }
540: }
541: }
542: }
543: $Str .= "\n".'</table>';
544: $r->print($Str);
545: $r->rflush();
546: }
547:
548: sub CreateTable {
549: my ($Hd, $Hid)=@_;
550: if ($ENV{'form.showcsv'}) {
551: if ( $Hd == 1 ) {
552: $r->print('<br>"'.$hash{'title_'.$Hid}.'","'.$hash{'src_'.$Hid}.'"');
553: }
554: return;
555: }
556: my $ColNo=0;
557: foreach (keys(%Header)){
558: $ColNo++;
559: }
560: if ( $Hd == 1 ) {
561: $r->print('<br><a href="'.$hash{'src_'.$Hid}.
562: '" target="_blank">'.$hash{'title_'.$Hid}.'</a>');
563: }
564: my $Result = "\n".'<table border=2>';
565: $Result .= '<tr><th>P#</th>'."\n";
566: for ( my $nIdx=0; $nIdx < $ColNo; $nIdx++ ) {
567: $Result .= '<th>'.'<input type="submit" name="sort" value="'.
568: $Header{$nIdx}.'" />'.'</th>'."\n";
569: }
570: $Result .= "\n".'</tr>'."\n";
571: $r->print( $Result );
572: $r->rflush();
573: }
574:
575: sub CloseTable {
576: if ($ENV{'form.showcsv'}) {
577: return;
578: }
579: $r->print("\n".'</table>'."\n");
580: $r->rflush();
581: }
582:
583: # ------------------------------------------- Prepare Statistics Table
584: sub PreStatTable {
585:
586: my $CacheDB = "/home/httpd/perl/tmp/$ENV{'user.name'}".
587: "_$ENV{'user.domain'}_$cid\_statistics.db";
588: my $GraphDB = "/home/httpd/perl/tmp/$ENV{'user.name'}".
589: "_$ENV{'user.domain'}_$cid\_graph.db";
590: my $OpSel11='';
591: my $OpSel12='';
592: my $OpSel13='';
593: my $Status = $ENV{'form.status'};
594: if ( $Status eq 'Any' ) { $OpSel13='selected'; }
595: elsif ($Status eq 'Expired' ) { $OpSel12 = 'selected'; }
596: else { $OpSel11 = 'selected'; }
597:
598: my $Ptr = '';
599: $Ptr .= '<br><b> Student Status: </b>'."\n".
600: '<select name="status">'.
601: '<option '.$OpSel11.' >Active</option>'."\n".
602: '<option '.$OpSel12.' >Expired</option>'."\n".
603: '<option '.$OpSel13.' >Any</option> </select> '."\n";
604: $Ptr .= ' ';
605: $Ptr .= '<input type=submit name=sort value="Recalculate Statistics"/>'."\n";
606:
607: $Ptr .= '<br><b> Sorting Type: </b>'."\n".
608: '<select name="order"> <option '.$OpSel1.' >Ascending</option>'."\n".
609: '<option '.$OpSel2.'>Descending</option> </select> '."\n";
610: $Ptr .= ' ';
611: $Ptr .= '<input type="submit" name="sort" value="DoDiff Graph" />'."\n";
612: $Ptr .= ' ';
613: $Ptr .= '<input type="submit" name="sort" value="%Wrong Graph" />'."\n";
614:
615: $Ptr .= '<pre>'.
616: '<b> #Stdnts</b>: Total Number of Students opened the problem.<br>'.
617: '<b> Tries </b>: Total Number of Tries for solving the problem.<br>'.
618: '<b> Max </b> : Maximunm Number of Tries for solving the problem.<br>'.
619: '<b> Avg. </b>: Average Number of the tries. [ Tries / #Stdnts ]<br>'.
620: '<b> #YES </b>: Number of students solved the problem correctly.<br>'.
621: '<b> #yes </b>: Number of students solved the problem by override.<br>'.
622: '<b> %Wrng </b>: Percentage of students tried to solve the problem but'.
623: ' still incorrect. [ 100*((#Stdnts-(#YES+#yes))/#Stdnts) ]<br>'.
624: # ' DoDiff : Degree of Difficulty of the problem. [ Tries/(#YES+#yes+0.1) ]<br>'. Kashy formula
625: '<b> DoDiff </b>: Degree of Difficulty of the problem. [ 1 - ((#YES+#yes) / Tries) ]<br>'. #Gerd formula
626: '<b> S.D. </b> : Standard Deviation of the tries.'.
627: '[ sqrt(sum((Xi - Avg.)^2)) / (#Stdnts-1)'.
628: ' where Xi denotes every student\'s tries ]<br>'.
629: '<b> Skew. </b>: Skewness of the students tries.'.
630: ' [ (sqrt( sum((Xi - Avg.)^3) / #Stdnts)) / (S.D.^3) ]<br>'.
631: '<b> Dis.F. </b>: Discrimination Factor: A Standard for '.
632: 'evaluating the problem according to a Criterion<br>'.
633: '<b> [Applied Criterion in %27 Upper Students - '.
634: 'Applied the same Criterion in %27 Lower Students]</b><br>'.
635: '<b> 1st Criterion</b> for Sorting the Students: '.
636: '<b>Sum of Partial Credit Awarded / Total Number of Tries</b><br>'.
637: '<b> 2nd Criterion</b> for Sorting the Students: '.
638: '<b>Total number of Correct Answers / Total Number of Tries</b>'.
639: '</pre>';
640:
641: $r->print($Ptr);
642:
643: $r->print('Output CSV format: <input type=checkbox name=showcsv onClick="submit()"');
644: if ($ENV{'form.showcsv'}) { $r->print(' checked'); }
645: $r->print('>');
646:
647: $r->rflush();
648:
649: if ((-e "$CacheDB")&&($ENV{'form.sort'} ne 'Recalculate Statistics')) {
650: if (tie(%CachData,'GDBM_File',"$CacheDB",&GDBM_READER,0640)) {
651: tie(%GraphDat,'GDBM_File',$GraphDB,&GDBM_WRCREAT,0640);
652: &Cache_Statistics();
653: }
654: else {
655: $r->print("Unable to tie hash to db file");
656: }
657: }
658: else {
659: if (tie(%CachData,'GDBM_File',$CacheDB,&GDBM_WRCREAT,0640)) {
660: tie(%GraphDat,'GDBM_File',$GraphDB,&GDBM_WRCREAT,0640);
661: foreach (keys %DiscFac) {delete $CachData{$_};}
662: foreach (keys %CachData) {delete $CachData{$_};}
663: $DiscFlag=0;
664: &Build_Statistics();
665: }
666: else {
667: $r->print("Unable to tie hash to db file");
668: }
669: }
670:
671: # $r->print('Total instances of the problems : '.($p_count*($#students+1)));
672: untie(%CachData);
673: untie(%GraphDat);
674: }
675:
676:
677: # ------------------------------------- Find the section of student in a course
678:
679: sub usection {
680: my ($udom,$unam,$courseid,$ActiveFlag)=@_;
681: $courseid=~s/\_/\//g;
682: $courseid=~s/^(\w)/\/$1/;
683: foreach (split(/\&/,&Apache::lonnet::reply('dump:'.
684: $udom.':'.$unam.':roles',
685: &Apache::lonnet::homeserver($unam,$udom)))){
686: my ($key,$value)=split(/\=/,$_);
687: $key=&Apache::lonnet::unescape($key);
688: if ($key=~/^$courseid(?:\/)*(\w+)*\_st$/) {
689: my $section=$1;
690: if ($key eq $courseid.'_st') { $section=''; }
691: my ($dummy,$end,$start)=split(/\_/,&Apache::lonnet::unescape($value));
692: if ( $ActiveFlag ne 'Any' ) {
693: my $now=time;
694: my $notactive=0;
695: if ($start) {
696: if ($now<$start) { $notactive=1; }
697: }
698: if ($end) {
699: if ($now>$end) { $notactive=1; }
700: }
701: if ((($ActiveFlag eq 'Expired') && $notactive == 1) ||
702: (($ActiveFlag eq 'Active') && $notactive == 0 ) ) {
703: return $section;
704: }
705: else { return '-1'; }
706: }
707: return $section;
708: }
709: }
710: return '-1';
711: }
712:
713:
714: # ------ Dump the Student's DB file and handling the data for statistics table
715: sub ExtractStudentData {
716: my $student=shift;
717: my ($sname,$sdom) = split( /\:/, $student );
718: my %result = &Apache::lonnet::dump($cid,$sdom,$sname);
719: my $ResId;
720: my $PrOrd;
721: my $Dis = '';
722: my $Code;
723: my $Tries;
724: my $ParCr;
725: my $TotalTries = 0;
726: my $TotalOpend = 0;
727: my $ProbSolved = 0;
728: my $ProbTot = 0;
729: my $TimeTot = 0;
730: my $TotParCr = 0;
731: my $Wrongs;
732: my %TempHash;
733: my $Version;
734: my $LatestVersion;
735: my $SecLimit;
736: my $MapLimit;
737: my ($temp)=keys(%result);
738: unless ($temp=~/^error\:/) {
739: foreach my $CurCol(@cols) {
740: ($PrOrd,$ResId)=split(/\:/,$CurCol);
741: if ( !$CurCol ) { next; }
742: $ResId=~/(\d+)\.(\d+)/;
743: my $MapId=$1;
744: my $PrbId=$2;
745: my $MapOrg = $hash{'map_id_'.$MapId};
746: my $Map = &Apache::lonnet::declutter($MapOrg);
747: if ( $CurMap ne 'All Maps' ) {
748: my ( $ResMap, $NameMap ) = split(/\=/,$CurMap);
749: if ( $Map ne $ResMap ) { next; }
750: }
751: my $meta=$hash{'src_'.$ResId};
752: my $PartNo = 0;
753: $Dis .= ':';
754: undef %TempHash;
755:
756: foreach (split(/\,/,&Apache::lonnet::metadata($meta,'keys'))) {
757: if ($_=~/^stores\_(\w+)\_tries$/) {
758: my $Part=&Apache::lonnet::metadata($meta,$_.'.part');
759: if ( $TempHash{"$Part"} eq '' ) {
760: $TempHash{"$Part"} = $Part;
761: $TempHash{$PartNo}=$Part;
762: $TempHash{"$Part.Code"} = 'U';
763: $TempHash{"$Part.PrOrd"} = $PrOrd+$PartNo;
764: $PartNo++;
765: }
766: #my $Part=&Apache::lonnet::metadata($meta,$_.'.part');
767: }
768: }
769: &Apache::lonnet::declutter( $hash{'src_'.$ResId} );
770: my $URI = $hash{'src_'.$ResId};
771: my $Prob = $Map.'___'.$PrbId.'___'.
772: &Apache::lonnet::declutter($URI);
773: $Code='U';
774: $Tries = 0;
775: $ParCr = 0;
776: $Wrongs = 0;
777: $LatestVersion = $result{"version:$Prob"};
778: if ( $LatestVersion ) {
779: for ( my $Version=1; $Version<=$LatestVersion; $Version++ ) {
780: my $vkeys = $result{"$Version:keys:$Prob"};
781: my @keys = split(/\:/,$vkeys);
782: foreach my $Key (@keys) {
783: if (($Key=~/\.(\w+)\.solved$/) && ($Key!~/^\d+\:/)) {
784: my $Part = $1;
785: $Tries = $result{"$Version:$Prob:resource.$Part.tries"};
786: $ParCr = $result{"$Version:$Prob:resource.$Part.awarded"};
787: my $Time = $result{"$Version:$Prob:timestamp"};
788: $TempHash{"$Part.Time"} = ($Time) ? $Time : 0;
789: $TempHash{"$Part.Tries"} = ($Tries) ? $Tries : 0;
790: $TempHash{"$Part.ParCr"} = ($ParCr) ? $ParCr : 0;
791: $TotalTries += $TempHash{"$Part.Tries"};
792: $TotParCr += $TempHash{"$Part.ParCr"};
793: my $Val = $result{"$Version:$Prob:resource.$Part.solved"};
794: if ( $Val eq 'correct_by_student' )
795: { $Wrongs = $Tries - 1; $Code = 'C'; }
796: elsif ( $Val eq 'correct_by_override' )
797: { $Wrongs = $Tries - 1; $Code = 'O'; }
798: elsif ( $Val eq 'incorrect_attempted' ||
799: $Val eq 'incorrect_by_override' )
800: { $Wrongs = $Tries; $Code = 'I'; }
801: $TempHash{"$Part.Code"} = $Code;
802: $TempHash{"$Part.Wrongs"} = $Wrongs;
803: }
804: }
805: }
806: for ( my $n = 0; $n < $PartNo; $n++ ) {
807: my $part = $TempHash{$n};
808: my $Yes = 0;
809: if ( $TempHash{$part.'.Code'} eq 'C' ||
810: $TempHash{$part.'.Code'} eq 'O' )
811: {$ProbSolved++;$Yes=1;}
812:
813: # my $ptr = "$hash{'title_'.$ResId}";
814: my $ptr = $TempHash{$part.'.PrOrd'}.'&'.$ResId;
815:
816: if ( $PartNo > 1 ) {
817: $ptr .= "*(part $part)";
818: $Dis .= '&';
819: }
820: my $Fac = ($TempHash{"$part.Tries"}) ?
821: ($TempHash{"$part.ParCr"}/$TempHash{"$part.Tries"}) : 0;
822: my $DisF;
823: if ( $Fac > 0 && $Fac < 1 ) {
824: $DisF = sprintf( "%.4f", $Fac );
825: }
826: else {$DisF = $Fac;}
827: # $DisF .= '+'.$TempHash{"$part.Time"};33333333
828: $TimeTot += $TempHash{"$part.Time"};
829: $Dis .= $TempHash{$part.'.PrOrd'}.'='.$DisF.'+'.$Yes;
830: $ptr .= "&$TempHash{$part.'.Tries'}".
831: "&$TempHash{$part.'.Wrongs'}".
832: "&$TempHash{$part.'.Code'}";
833: push (@list, $ptr);
834: $TotalOpend++;
835: $ProbTot++;
836: }
837: }
838: #else {
839: #for(my $n=0; $n<$PartNo; $n++) {
840: # push (@list, "$TempHash{'0'.'.PrOrd'}.':'.$ResId:0:0:U");
841: # $ProbTot++;
842: #}
843: #}
844: }
845: if ( $TotalTries ) {
846: my $DisFac = ( $TotalTries ) ? ($TotParCr/$TotalTries) : 0;
847: my $DisFactor = sprintf( "%.4f", $DisFac );
848: $DiscFac{$DisFactor}=$Dis;
849: #my $time;
850: #if ($ProbSolved){
851: #$time = int(($TimeTot/$ProbSolved)-10000000);
852: #}
853: #$DiscFac{($DisFactor.':'.$sname.':'.$ProbTot.':'.$TotalOpend.':'.
854: # $TotalTries.':'.$ProbSolved.':'.$time)}=$Dis;
855: }
856: }
857: #$r->print($sname.' PrCr= '.$TotParCr.' Slvd= '.$ProbSolved.' Tries='.$TotalTries.'<br>');
858: }
859:
860:
861: # ------------------------------------------------------------ Build page table
862: sub tracetable {
863: my ($rid,$beenhere)=@_;
864: my $IsMap=0;
865: $rid=~/(\d+)\.(\d+)/;
866: $maps{&Apache::lonnet::declutter($hash{'map_id_'.$1})}='';#$hash{'title_'.$rid};
867: #$maps{$HWN}=$hash{'title_'.$rid};
868: unless ($beenhere=~/\&$rid\&/) {
869: $beenhere.=$rid.'&';
870: if (defined($hash{'is_map_'.$rid})) {
871: my $cmap=$hash{'map_type_'.$hash{'map_pc_'.$hash{'src_'.$rid}}};
872: if ( $cmap eq 'sequence' || $cmap eq 'page' ) {
873: $cols[$#cols+1]=0;
874: $P_Order++;
875: $HWN=$P_Order;
876: $mapsort{$HWN} = $rid.':';
877: $IsMap=1;
878:
879: #$maps{&Apache::lonnet::declutter($hash{'src_'.$rid})}=
880: # $hash{'title_'.$rid};
881: }
882: if ((defined($hash{'map_start_'.$hash{'src_'.$rid}})) &&
883: (defined($hash{'map_finish_'.$hash{'src_'.$rid}}))) {
884: my $frid=$hash{'map_finish_'.$hash{'src_'.$rid}};
885:
886: &tracetable($hash{'map_start_'.$hash{'src_'.$rid}},
887: '&'.$frid.'&');
888:
889: $cols[$#cols+1]=($P_Order+1).':'.$frid;
890:
891: my $meta=$hash{'src_'.$frid};
892: my $PartNo = 0;
893: my $Part;
894: # if ($IsMap==0){
895: if ($meta) {
896: if ($meta=~/\.(problem|exam|quiz|assess|survey|form)$/) {
897: foreach (split(/\,/,&Apache::lonnet::metadata($meta,'keys'))) {
898: if ($_=~/^stores\_(\w+)\_tries$/) {
899: $Part=&Apache::lonnet::metadata($meta,$_.'.part');
900: $P_Order++;
901: $mapsort{$HWN} .= '&'.$P_Order;
902: $PartNo++;
903: #$r->print('<br>'.$PartNo.'---'.$P_Order);
904: }
905: foreach my $K(split(/\,/,&Apache::lonnet::metadata($meta,'packages'))) {
906: if ($K=~/^optionresponse\_($Part)\_(\w+)$/) {
907: #$r->print('<br>'.$_.'...'.$P_Order.'---'.$Part);
908: $OpResp{$P_Order}="$frid:$Part";
909: }
910: }
911: }
912: }
913: }
914: }
915: # }
916: } else {
917: $cols[$#cols+1]=($P_Order+1).':'.$rid;
918: my $meta=$hash{'src_'.$rid};
919: my $PartNo = 0;
920: if ($meta) {
921: if ($meta=~/\.(problem|exam|quiz|assess|survey|form)$/) {
922: foreach my $Key(split(/\,/,&Apache::lonnet::metadata($meta,'keys'))) {
923: if ($Key=~/^stores\_(\w+)\_tries$/) {
924: my $Part=&Apache::lonnet::metadata($meta,$Key.'.part');
925: $P_Order++;
926: $mapsort{$HWN} .= '&'.$P_Order;
927: $PartNo++;
928: foreach (split(/\,/,&Apache::lonnet::metadata($meta,'packages'))) {
929: if ($_=~/^optionresponse\_($Part)\_(\w+)$/) {
930: #$r->print('<br>'.$_.'...'.$P_Order.'---'.$Part);
931: $OpResp{$P_Order}="$rid:$Part";;
932: }
933:
934: }
935:
936: }
937: }
938: }
939: }
940: }
941: if (defined($hash{'to_'.$rid})) {
942: foreach (split(/\,/,$hash{'to_'.$rid})){
943: &tracetable($hash{'goesto_'.$_},$beenhere);
944: }
945: }
946: }
947: }
948:
949: sub MySort {
950: if ( $Pos > 0 ) {
951: if ($ENV{'form.order'} eq 'Descending') {$b <=> $a;}
952: else { $a <=> $b; }
953: }
954: else {
955: if ($ENV{'form.order'} eq 'Descending') {$b cmp $a;}
956: else { $a cmp $b; }
957: }
958: }
959:
960: sub Create_PrgWin {
961: #----------- Create progress
962: $r->print(<<ENDPOP);
963: <script>
964: popwin=open('','popwin','width=400,height=100');
965: popwin.document.writeln('<html><body bgcolor="#88DDFF">'+
966: '<title>LON-CAPA Statistics</title>'+
967: '<h4>Computation Progress</h4>'+
968: '<form name=popremain>'+
969: '<input type=text size=35 name=remaining value=Starting></form>'+
970: '</body></html>');
971: popwin.document.close();
972: </script>
973: ENDPOP
974:
975: $r->rflush();
976: }
977:
978:
979: sub Update_PrgWin {
980: #----------- update progress
981: my $index = shift;
982: $r->print('<script>popwin.document.popremain.remaining.value="'.
983: 'Computing '.($index+1).'/'.($#students+1).': '.
984: $students[$index].'";</script>');
985: $r->rflush();
986: }
987:
988: sub Close_PrgWin {
989: #--------------------- close Progress Line
990: $r->print('<script>popwin.close()</script>');
991: $r->rflush();
992: }
993:
994: sub Build_Statistics {
995: &Create_PrgWin();
996: # ---------------------------- Gathering the Data of students' tries
997: for (my $index=0;$index<=$#students;$index++) {
998: &Update_PrgWin($index);
999: &ExtractStudentData($students[$index]);
1000: }
1001:
1002: # -------------------- sorting the Data
1003: $r->print('<script>popwin.document.popremain.remaining.value="'.
1004: 'Calculating Discrimination Factors...";</script>');
1005:
1006: @list = sort (@list);
1007:
1008: &Discriminant();
1009:
1010: $OpSel2='';
1011: $OpSel1='selected';
1012:
1013: $p_count = 0;
1014: my $nIdx = 0;
1015: my $dummy;
1016: my $p_val;
1017: my $ResId;
1018: my $NoElements = $#list + 1;
1019: #-------------------------------- loop for data representation
1020: foreach (sort keys %mapsort) {
1021: my ($Hid,$pr)=split(/\:/,$mapsort{$_});
1022: my @lpr=split(/\&/,$pr);
1023: &CreateTable(1,$Hid);
1024: for (my $i=1; $i<=$#lpr; $i++) {
1025: my %storestats=();
1026: my ($PrOrd,$Prob,$Tries,$Wrongs,$Code)=split(/\&/,$list[$nIdx]);
1027: my $Temp = $Prob;
1028: my $MxTries = 0;
1029: my $TotalTries = 0;
1030: my $YES = 0;
1031: my $Incorrect = 0;
1032: my $Override = 0;
1033: my $StdNo = 0;
1034: my @StdLst;
1035: while ( $PrOrd == $lpr[$i] )
1036: {
1037: $nIdx++;
1038: $StdNo++;
1039: $StdLst[ $StdNo ] = $Tries;
1040: $TotalTries += $Tries;
1041: if ( $MxTries < $Tries ) { $MxTries = $Tries; }
1042: if ( $Code eq 'C' ){ $YES++; }
1043: elsif( $Code eq 'I' ) { $Incorrect++; }
1044: elsif( $Code eq 'O' ) { $Override++; }
1045: elsif( $Code eq 'U' ) { $StdNo--; }
1046: ($PrOrd,$Prob,$Tries,$Wrongs,$Code)=split(/\&/,$list[$nIdx]);
1047: }
1048:
1049: $p_count++;
1050: my $Dummy;
1051: ($ResId,$Dummy)=split(/\*/,$Temp);
1052:
1053: $Temp = '<a href="'.$hash{'src_'.$ResId}.
1054: '" target="_blank">'.$hash{'title_'.$ResId}.$Dummy.'</a>';
1055:
1056: my $res = &Apache::lonnet::declutter($hash{'src_'.$ResId});
1057: my $urlres=$res;
1058:
1059: $ResId=~/(\d+)\.(\d+)/;
1060: my $Map = &Apache::lonnet::declutter( $hash{'map_id_'.$1} );
1061: $urlres=$Map;
1062:
1063: $res = '<a href="'.$hash{'src_'.$ResId}.'">'.$res.'</a>';
1064: #$Map = '<a href="'.$Map.'">'.$res.'</a>';
1065:
1066: #------------------------ Compute the Average of Tries about one problem
1067: my $Average = ($StdNo) ? $TotalTries/$StdNo : 0;
1068:
1069: $storestats{$ENV{'request.course.id'}.'___'.$urlres.'___timestamp'}=time;
1070: $storestats{$ENV{'request.course.id'}.'___'.$urlres.'___stdno'}=$StdNo;
1071: $storestats{$ENV{'request.course.id'}.'___'.$urlres.'___avetries'}=$Average;
1072:
1073: #-------------------------------- Compute percentage of Wrong tries
1074: my $Wrong = ( $StdNo ) ? 100 * ( $Incorrect / $StdNo ) : 0;
1075:
1076: #-------------------------------- Compute Standard Deviation
1077: my $StdDev = 0;
1078: if ( $StdNo > 1 ) {
1079: for ( my $n = 0; $n < $StdNo; $n++ ) {
1080: my $Dif = $StdLst[ $n ]-$Average;
1081: $StdDev += $Dif*$Dif;
1082: }
1083: $StdDev /= ( $StdNo - 1 );
1084: $StdDev = sqrt( $StdDev );
1085: }
1086:
1087: #-------------------------------- Compute Degree of Difficulty
1088: my $DoDiff = 0;
1089: if( $TotalTries > 0 ) {
1090: $DoDiff = 1 - ( ( $YES + $Override ) / $TotalTries );
1091: # $DoDiff = ($TotalTries)/($YES + $Override+ 0.1);
1092: }
1093:
1094: $storestats{$ENV{'request.course.id'}.'___'.$urlres.'___difficulty'}=$DoDiff;
1095:
1096: #-------------------------------- Compute the Skewness
1097: my $Skewness = 0;
1098: my $Sum = 0;
1099: if ( $StdNo > 0 && $StdDev > 0 ) {
1100: for ( my $n = 0; $n < $StdNo; $n++ ) {
1101: my $Dif = $StdLst[ $n ]-$Average;
1102: $Skewness += $Dif*$Dif*$Dif;
1103: }
1104: $Skewness /= $StdNo;
1105: $Skewness /= $StdDev*$StdDev*$StdDev;
1106: }
1107:
1108: #--------------------- Compute the Discrimination Factors
1109: my ($Up1,$Up2)=split(/\:/,$DisUp{$lpr[$i]});
1110: my ($Lw1,$Lw2)=split(/\:/,$DisLow{$lpr[$i]});
1111: my $Dis1 = $Up1 - $Lw1;
1112: my $Dis2 = $Up2 - $Lw2;
1113: my $_D1 = sprintf("%.2f", $Dis1);
1114: my $_D2 = sprintf("%.2f", $Dis2);
1115:
1116: #----------------- Some restition in presenting the float numbers
1117: my $Avg = sprintf( "%.2f", $Average );
1118: my $Wrng = sprintf( "%.1f", $Wrong );
1119: my $SD = sprintf( "%.1f", $StdDev );
1120: my $DoD = sprintf( "%.2f", $DoDiff );
1121: my $Sk = sprintf( "%.1f", $Skewness );
1122: my $join = $lpr[$i].'&'.$Temp.'&'.$StdNo.'&'.
1123: $TotalTries.'&'.$MxTries.'&'.$Avg.'&'.
1124: $YES.'&'.$Override.'&'.$Wrng.'&'.$DoD.'&'.
1125: $SD.'&'.$Sk.'&'.$_D1.'&'.$_D2.'&'.
1126: $Prob;
1127: $CachData{($p_count-1)}=$join;
1128:
1129: $urlres=~/^(\w+)\/(\w+)/;
1130: if ($StdNo) {
1131: &Apache::lonnet::put('resevaldata',\%storestats,$1,$2);
1132: }
1133: #-------------------------------- Row of statistical table
1134: if ( $DiscFlag == 0 ) {
1135: &TableRow($join,$i,($p_count-1));
1136: }
1137: }
1138: &CloseTable();
1139: }
1140: &Close_PrgWin();
1141: }
1142:
1143: sub Cache_Statistics {
1144: my @list = ();
1145: my $Useful;
1146: my $UnUseful;
1147: my %myHeader = reverse( %Header );
1148: #&Apache::lonnet::delenv('form_');
1149: #&Apache::lonnet::delenv('test');
1150: $Pos = $myHeader{$ENV{'form.sort'}};
1151: if ($Pos > 0) {$Pos++;}
1152: $p_count = 0;
1153: foreach my $key( keys %CachData) {
1154: my @Temp=split(/\&/,$CachData{$key});
1155: if ( $Pos == 0 ) {
1156: ($UnUseful,$Useful)=split(/\>/,$Temp[$Pos]);
1157: }
1158: else {
1159: $Useful = $Temp[$Pos];
1160: }
1161: $list[$p_count]=$Useful.'@'.$CachData{$key};
1162: $p_count++;
1163: }
1164:
1165: @list = sort MySort (@list);
1166:
1167: my $nIdx=0;
1168:
1169: if ( $Pos == 0 ) {
1170: foreach (sort keys %mapsort) {
1171: my ($Hid,$pr)=split(/\:/,$mapsort{$_});
1172: &CreateTable(1,$Hid);
1173: my @lpr=split(/\&/,$pr);
1174: for (my $i=1; $i<=$#lpr; $i++) {
1175: my($Pre, $Post) = split(/\@/,$list[$nIdx]);
1176: #$r->print('<br>'.$Pre.'---'.$Post);
1177: &TableRow($Post,$i,$nIdx);
1178: $nIdx++;
1179: }
1180: &CloseTable();
1181: }
1182: }
1183: else {
1184: &CreateTable(0);
1185: for ( my $nIdx = 0; $nIdx < $p_count; $nIdx++ ) {
1186: my($Pre, $Post) = split(/\@/,$list[$nIdx]);
1187: &TableRow($Post,$nIdx,$nIdx);
1188: }
1189: &CloseTable();
1190: }
1191: }
1192:
1193: sub TableRow {
1194: my ($Str,$Idx,$RealIdx)=@_;
1195: my($PrOrd,$Temp,$StdNo,$TotalTries,$MxTries,$Avg,$YES,$Override,
1196: $Wrng,$DoD,$SD,$Sk,$_D1,$_D2,$Prob)=split(/\&/,$Str);
1197: if ($ENV{'form.showcsv'}) {
1198: my ($ResId,$Dummy)=split(/\*/,$Prob);
1199: my $Ptr = "\n".'<br>'.
1200: "\n".'"'.($RealIdx+1).'",'.
1201: "\n".'"'.$hash{'title_'.$ResId}.$Dummy.'",'.
1202: "\n".'"'.$hash{'src_'.$ResId}.'",'.
1203: "\n".'"'.$StdNo.'",'.
1204: "\n".'"'.$TotalTries.'",'.
1205: "\n".'"'.$MxTries.'",'.
1206: "\n".'"'.$Avg.'",'.
1207: "\n".'"'.$YES.'",'.
1208: "\n".'"'.$Override.'",'.
1209: "\n".'"'.$Wrng.'",'.
1210: "\n".'"'.$DoD.'",'.
1211: "\n".'"'.$SD.'",'.
1212: "\n".'"'.$Sk.'",'.
1213: "\n".'"'.$_D1.'",'.
1214: "\n".'"'.$_D2.'"';
1215: $r->print("\n".$Ptr);
1216: }
1217: else{
1218: my $Ptr = "\n".'<tr>'.
1219: "\n".'<td>'.($RealIdx+1).'</td>'.
1220: # "\n".'<td>'.$PrOrd.$Temp.'</td>'.
1221: "\n".'<td>'.$Temp.'</td>'.
1222: "\n".'<td bgcolor="#EEFFCC"> '.$StdNo.'</td>'.
1223: "\n".'<td bgcolor="#EEFFCC">'.$TotalTries.'</td>'.
1224: "\n".'<td bgcolor="#EEFFCC">'.$MxTries.'</td>'.
1225: "\n".'<td bgcolor="#DDFFFF">'.$Avg.'</td>'.
1226: "\n".'<td bgcolor="#DDFFFF"> '.$YES.'</td>'.
1227: "\n".'<td bgcolor="#DDFFFF"> '.$Override.'</td>'.
1228: "\n".'<td bgcolor="#FFDDDD"> '.$Wrng.'</td>'.
1229: "\n".'<td bgcolor="#FFDDDD">'.$DoD.'</td>'.
1230: "\n".'<td bgcolor="#DDFFDD"> '.$SD.'</td>'.
1231: "\n".'<td bgcolor="#DDFFDD"> '.$Sk.'</td>'.
1232: "\n".'<td bgcolor="#FFDDFF"> '.$_D1.'</td>'.
1233: "\n".'<td bgcolor="#FFDDFF"> '.$_D2.'</td>';
1234: $r->print("\n".$Ptr.'</tr>' );
1235: }
1236: $GraphDat{$RealIdx}=$DoD.':'.$Wrng;
1237: }
1238:
1239: # ------------------------------------------- Prepare data for Graphical chart
1240:
1241: sub GetGraphData {
1242: my $ylab = shift;
1243: my $Col;
1244: my $data='';
1245: my $count = 0;
1246: my $Max = 0;
1247: my $cid=$ENV{'request.course.id'};
1248: my $GraphDB = "/home/httpd/perl/tmp/$ENV{'user.name'}".
1249: "_$ENV{'user.domain'}_$cid\_graph.db";
1250: foreach (keys %GraphDat) {delete $GraphDat{$_};}
1251: if (-e "$GraphDB") {
1252: if (tie(%GraphDat,'GDBM_File',"$GraphDB",&GDBM_READER,0640)) {
1253: if ( $ylab eq 'DoDiff Graph' ) {
1254: $ylab = 'Degree-of-Difficulty';
1255: $Col = 0;
1256: }
1257: else {
1258: $ylab = 'Wrong-Percentage';
1259: $Col = 1;
1260: }
1261: foreach (sort NumericSort keys %GraphDat) {
1262: my @Temp=split(/\:/,$GraphDat{$_});
1263: my $inf = $Temp[$Col];
1264: if ( $Max < $inf ) {$Max = $inf;}
1265: $data .= $inf.',';
1266: $count++;
1267: }
1268: if ( $Max > 1 ) {
1269: $Max += (10 - $Max % 10);
1270: $Max = int($Max);
1271: }
1272: else { $Max = 1; }
1273: untie(%GraphDat);
1274: my $Course = $ENV{'course.'.$cid.'.description'};
1275: $Course =~ s/\ /"_"/eg;
1276: $GData=$Course.'&'.'Problems'.'&'.$ylab.'&'.$Max.'&'.$count.'&'.$data;
1277: }
1278: else {
1279: $r->print("Unable to tie hash to db file");
1280: }
1281: }
1282: }
1283:
1284:
1285: sub initial {
1286: # --------------------------------- Initialize the global varaibles
1287: undef @students;
1288: undef @cols;
1289: undef %maps;
1290: undef %section;
1291: undef %StuBox;
1292: undef @list;
1293: undef %CachData;
1294: undef %GraphDat;
1295: undef %DiscFac;
1296: undef %OpResp;
1297: undef %ConceptData;
1298: undef $CurMap;
1299: undef $CurSec;
1300: undef $CurStu;
1301: undef $p_count;
1302: undef $Pos;
1303: undef $GData;
1304: $DiscFlag=0;
1305: $P_Order=100000;
1306: $HWN=$P_Order;
1307: }
1308:
1309: # my $CacheDB = "/home/httpd/perl/tmp/$ENV{'user.name'}".
1310: # "_$ENV{'user.domain'}_$cid\_classlist.db";
1311: # if (-e "$CacheDB") {
1312: # if (tie(%students,'GDBM_File',"$CacheDB",&GDBM_READER,0640)) {
1313: # &CachClassList();
1314: # }
1315: # else {
1316: # $r->print("Unable to tie hash to db file");
1317: # }
1318: # }
1319: # else {
1320: # if (tie(%students,'GDBM_File',$CacheDB,&GDBM_WRCREAT,0640)) {
1321: # &MakeClassList();
1322: # }
1323: # else {
1324: # $r->print("Unable to tie hash to db file");
1325: # }
1326: # }
1327: # untie(%students);
1328:
1329:
1330: sub ClassList {
1331:
1332: &GetStatus();
1333:
1334: $cid=$ENV{'request.course.id'};
1335: my $chome=$ENV{'course.'.$cid.'.home'};
1336: my ($cdom,$cnum)=split(/\_/,$cid);
1337: # ----------------------- Get first and last resource, see if there is anything
1338: $firstres=$hash{'map_start_/res/'.$ENV{'request.course.uri'}};
1339: $lastres=$hash{'map_finish_/res/'.$ENV{'request.course.uri'}};
1340: if (($firstres) && ($lastres)) {
1341: # my %students = &Apache::lonnet::dump('classlist',$cdom,$cnum);
1342: # $Apache::lonxml::debug=1;
1343: # &Apache::lonhomework::showhash(%students);
1344: # $Apache::lonxml::debug=0;
1345: # my $StudNo = 0;
1346: # my $now=time;
1347: # my ($temp)=keys(%students);
1348: # unless ($temp=~/^error\:/) {
1349: # foreach my $KeyPoint(sort keys(%students)) {
1350: my $classlst=&Apache::lonnet::reply('dump:'.$cdom.':'.$cnum.':classlist',$chome);
1351: my $StudNo = 0;
1352: my $now=time;
1353: unless ($classlst=~/^error\:/) {
1354: foreach my $KeyPoint(sort split(/\&/,$classlst)) {
1355: my ($name,$value)=split(/\=/,$KeyPoint);
1356: my ($end,$start)=split(/\:/,&Apache::lonnet::unescape($value));
1357: my $active=1;
1358: my $Status=$ENV{'form.status'};
1359: $Status = ($Status) ? $Status : 'Active';
1360: if ( ( ($end) && $now > $end ) &&
1361: ( ($Status eq 'Active') ) ) { $active=0; }
1362:
1363: if ( ($Status eq 'Expired') &&
1364: ($end == 0 || $now < $end) ) { $active=0; }
1365:
1366: if ($active) {
1367: my $thisindex=$#students+1;
1368: $name=&Apache::lonnet::unescape($name);
1369: $students[$thisindex]=$name;
1370: my ($sname,$sdom)=split(/\:/,$name);
1371: my $ssec=&usection($sdom,$sname,$cid,$Status);
1372: if ($ssec==-1 || $ssec eq 'adm' ) {next;}
1373: $ssec=($ssec) ? $ssec : '(none)';
1374: #$ssec=(int($ssec)) ? int($ssec) : $ssec;
1375: $section{$ssec}=$ssec;
1376: if ($CurSec eq 'All Sections' || $ssec eq $CurSec) {
1377: $students[$StudNo]=$name;
1378: $StuBox{$sname}=$sdom;
1379: }
1380: $StudNo++;
1381: }
1382: }
1383: }
1384: else {
1385: $r->print('<h1>Could not access course data</h1>');
1386: }
1387: $r->print("Total number of students : ".($#students+1));
1388: $r->rflush();
1389: # --------------- Find all assessments and put them into some linear-like order
1390: &tracetable($firstres,'&'.$lastres.'&');
1391: # my $c=0;
1392: # foreach (sort keys %mapsort) {
1393: # $r->print('<br>'.$c.')'.$_.' ... '.$mapsort{$_});
1394: # $c++;
1395: # }
1396: # my $c=1;
1397: # foreach (sort keys %OpResp) {
1398: # $r->print('<br>'.$c.')'.$_.' ... '.$OpResp{$_}.' ... '.$hash{'src_'.$OpResp{$_}});
1399: # $c++;
1400: # }
1401:
1402: }
1403:
1404: # ------------------------------------------------------------- End render page
1405: else {
1406: $r->print('<h3>Undefined course sequence</h3>');
1407: }
1408: }
1409:
1410:
1411: sub ClassListnew {
1412:
1413: &GetStatus();
1414:
1415: $cid=$ENV{'request.course.id'};
1416: my $chome=$ENV{'course.'.$cid.'.home'};
1417: my ($cdom,$cnum)=split(/\_/,$cid);
1418: # ----------------------- Get first and last resource, see if there is anything
1419: $firstres=$hash{'map_start_/res/'.$ENV{'request.course.uri'}};
1420: $lastres=$hash{'map_finish_/res/'.$ENV{'request.course.uri'}};
1421: if (($firstres) && ($lastres)) {
1422:
1423: my %students = &Apache::lonnet::dump('classlist',$cdom,$cnum);
1424: my $StudNo = 0;
1425: my $now=time;
1426: my ($temp)=keys(%students);
1427: unless ($temp=~/^error\:/) {
1428: foreach (sort keys(%students)) {
1429: my ($name,$value)=split(/\=/,$_);
1430: my ($end,$start)=split(/\:/,&Apache::lonnet::unescape($value));
1431: $name=&Apache::lonnet::unescape($name);
1432: my ($sname,$sdom)=split(/\:/,$name);
1433: my $active=1;
1434: my $Status=$ENV{'form.status'};
1435: $Status = ($Status) ? $Status : 'Active';
1436: if ( ( ($end) && $now > $end ) &&
1437: ( ($Status eq 'Active') ) ) { $active=0; }
1438: if ( ($Status eq 'Expired') &&
1439: ($end == 0 || $now < $end) ) { $active=0; }
1440: if ($active) {
1441: my $thisindex=$#students+1;
1442: $name=&Apache::lonnet::unescape($name);
1443: $students[$thisindex]=$name;
1444: my ($sname,$sdom)=split(/\:/,$name);
1445: #my %reply=&Apache::lonnet::idrget($sdom,$sname);
1446: #my $reply=&Apache::lonnet::reply('get:'.$sdom.':'.$sname.
1447: # ':environment:lastname&generation&firstname&middlename',
1448: # &Apache::lonnet::homeserver($sname,$sdom));
1449: my $ssec=&usection($sdom,$sname,$cid,$Status);
1450: # if ($ssec==-1 ) {next;}
1451: if ($ssec==-1 || $ssec eq 'adm' ) {next;}
1452: $ssec=($ssec) ? $ssec : '(none)';
1453: #$ssec=(int($ssec)) ? int($ssec) : $ssec;
1454: $section{$ssec}=$ssec;
1455: if ($CurSec eq 'All Sections' || $ssec eq $CurSec) {
1456: $students[$StudNo]=$name;
1457: $StuBox{$sname}=$sdom;
1458: }
1459: $StudNo++;
1460: }
1461: }
1462: }
1463: else {
1464: $r->print('<h1>Could not access course data</h1>');
1465: }
1466: $r->print("Total number of students : ".($#students+1));
1467: $r->rflush();
1468: # --------------- Find all assessments and put them into some linear-like order
1469: &tracetable($firstres,'&'.$lastres.'&');
1470: }
1471:
1472: # ------------------------------------------------------------- End render page
1473: else {
1474: $r->print('<h3>Undefined course sequence</h3>');
1475: }
1476: }
1477:
1478:
1479: sub Title {
1480: $r->print('<html><head><title>LON-CAPA Statistics</title></head>');
1481: $r->print('<body bgcolor="#FFFFFF">'.
1482: '<script>window.focus(); window.width=500;window.height=500;</script>'.
1483: '<img align=right src=/adm/lonIcons/lonlogos.gif>');
1484: # ---------------------------------------------------------------- Course title
1485: $r->print('<h1> Course : "'.
1486: $ENV{'course.'.$ENV{'request.course.id'}.
1487: '.description'}.'"</h1><h2>'.localtime().'</h2>');
1488: # ------------------------------- This is going to take a while, produce output
1489: $r->rflush();
1490: }
1491:
1492:
1493: sub CreateForm {
1494: $r->print("\n".'<form name=stat method=post action="/adm/statistics" >');
1495: my $content = $ENV{'form.sort'};
1496: if (!($ENV{'form.showcsv'}) && #|| !($ENV{'csv'})) &&
1497: ($content eq '' || $content eq 'Return to Menu')) {
1498: my $Ptr = '<h3>';
1499: $Ptr .= '<input type=submit name=sort value="Problem Stats"/>';
1500: $Ptr .= '<br><br>';
1501: $Ptr .= '<input type=submit name=sort value="Problem Analysis"/>';
1502: $Ptr .= '<br><br>';
1503: $Ptr .= '<input type=submit name=sort value="Student Assessment"/>';
1504: $Ptr .= '</h3>';
1505: $r->print( $Ptr );
1506: }
1507: else {
1508: &ClassList();
1509: if ( $content eq 'Student Assessment' ||
1510: $content eq 'Create Student Report' ) {
1511: &MapSecOptions();
1512: &StudentOptions();
1513: &StudentReport($CurStu,$StuBox{"$CurStu"});
1514: }
1515: elsif ( $content eq 'Problem Analysis' ) {
1516: &AnalyzeProblem();
1517: }
1518: else {
1519: &MapSecOptions();
1520: &PreStatTable();
1521: }
1522: }
1523: }
1524:
1525:
1526: sub Menu {
1527: &initial();
1528: # $Apache::lonxml::debug=1;
1529: # &Apache::lonhomework::showhash(%ENV);
1530: # $Apache::lonxml::debug=0;
1531: &Title();
1532: my $InpStr = $ENV{'form.sort'};
1533: if ($InpStr=~/^Analyze\_/) {
1534: &ClassList();
1535: &ShowOpGraph($InpStr,$ENV{'form.interval'});
1536: }
1537: elsif ( $InpStr eq 'DoDiff Graph' || $InpStr eq '%Wrong Graph' ) {
1538: &GetGraphData($InpStr);
1539: $r->print('<IMG src="/cgi-bin/graph.gif?'.$GData.'" />');
1540: }
1541: else {
1542: &CreateForm();
1543: $r->print("\n".'</form>');
1544: }
1545: $r->print("\n".'</body>'.
1546: "\n".'</html>');
1547: $r->rflush();
1548: }
1549:
1550: sub StudentOptions {
1551: my $OpSel5='';
1552: $CurStu = $ENV{'form.student'};
1553: if ( $CurStu eq '' ) {
1554: $CurStu = 'All Students';
1555: $OpSel5 = 'selected';
1556: }
1557: my $Ptr ='';
1558: # ----------------------------------- Loading the Students Combobox
1559: $Ptr .= '<br><b>Select Student</b>'."\n".
1560: '<select name="student">'."\n".
1561: '<option '.$OpSel5.'>All Students</option>';
1562: foreach my $key ( sort keys %StuBox ) {
1563: $Ptr .= '<option';
1564: if ($CurStu eq $key) {$Ptr .= ' selected';}
1565: $Ptr .= '>'.$key."</option>\n";
1566: }
1567: $Ptr .= '</select>';
1568: $Ptr .= '<br><input type="submit" name="sort" value="Create Student Report" />';
1569: $r->print( $Ptr );
1570: $r->rflush();
1571: }
1572:
1573:
1574: sub GetStatus {
1575: $OpSel1='';
1576: $OpSel2='';
1577: $OpSel3='';
1578: $OpSel4='';
1579:
1580: if ( $ENV{'form.order'} eq 'Descending' ) { $OpSel2='selected'; }
1581: else { $OpSel1 = 'selected'; }
1582:
1583: my %myHeader = reverse( %Header );
1584: $Pos = $myHeader{$ENV{'form.sort'}};
1585: if ($Pos == 0) {
1586: $OpSel1 = 'selected';
1587: $ENV{'form.order'}='Ascendig';
1588: }
1589:
1590: $CurMap = $ENV{'form.maps'};
1591: if ( $CurMap eq '' ) {
1592: $CurMap = 'All Maps';
1593: $OpSel3 = 'selected';
1594: }
1595: $CurSec = $ENV{'form.section'};
1596: if ( $CurSec eq '' ) {
1597: $CurSec = 'All Sections';
1598: $OpSel4 = 'selected';
1599: }
1600: }
1601:
1602:
1603: sub MapSecOptions {
1604: # ----------------------------------- Loading the Maps Combobox
1605: my $Ptr = '<br>';
1606: $Ptr .= '<input type="submit" name="sort" value="Return to Menu" />';
1607: $Ptr .= '<br><b> Select Map </b>'."\n".
1608: '<select name="maps">'."\n".
1609: '<option '.$OpSel3.'>All Maps</option>';
1610: foreach my $key ( sort keys %maps ) {
1611: $Ptr .= '<option';
1612: if ($CurMap eq $key) {$Ptr .= ' selected';}
1613: $Ptr .= '>'.$key."</option>\n";
1614: }
1615: $Ptr .= '</select>';
1616: $Ptr .= ' ';
1617:
1618: # ----------------------------------- Loading the Sections Combobox
1619: $Ptr .= '<br><b>Select Section</b>'."\n".
1620: '<select name="section">'."\n".
1621: '<option '.$OpSel4.'>All Sections</option>';
1622: foreach my $key ( sort keys %section ) {
1623: $Ptr .= '<option';
1624: if ($CurSec eq $key) {$Ptr .= ' selected';}
1625: $Ptr .= '>'.$key."</option>"."\n";
1626: }
1627: $Ptr .= '</select>'."\n";
1628:
1629: $r->print( $Ptr );
1630: $r->rflush();
1631: }
1632:
1633:
1634: # ================================================================ Main Handler
1635:
1636: sub handler {
1637: $r=shift;
1638:
1639: if (&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'})) {
1640: # ------------------------------------------- Set document type for header only
1641: if ($r->header_only) {
1642: if ($ENV{'browser.mathml'}) {
1643: $r->content_type('text/xml');
1644: }
1645: else {
1646: $r->content_type('text/html');
1647: }
1648: $r->send_http_header;
1649: return OK;
1650: }
1651: my $requrl=$r->uri;
1652: # ----------------------------------------------------------------- Tie db file
1653:
1654: undef %hash;
1655:
1656: if ($ENV{'request.course.fn'}) {
1657: my $fn=$ENV{'request.course.fn'};
1658: if (-e "$fn.db") {
1659: if (tie(%hash,'GDBM_File',"$fn.db",&GDBM_READER,0640)) {
1660: # ------------------------------------------------------------------- Hash tied
1661: $r->content_type('text/html');
1662: $r->send_http_header;
1663: &Menu();
1664: }
1665: else {
1666: $r->content_type('text/html');
1667: $r->send_http_header;
1668: $r->print('<html><body>Coursemap undefined.</body></html>');
1669: }
1670: # ------------------------------------------------------------------ Untie hash
1671: unless (untie(%hash)) {
1672: &Apache::lonnet::logthis("<font color=blue>WARNING: ".
1673: "Could not untie coursemap $fn (browse).</font>");
1674: }
1675:
1676: # -------------------------------------------------------------------- All done
1677: return OK;
1678: # ----------------------------------------------- Errors, hash could no be tied
1679: }
1680: }
1681: else {
1682: $ENV{'user.error.msg'}="$requrl:bre:0:0:Course not initialized";
1683: return HTTP_NOT_ACCEPTABLE;
1684: }
1685: }
1686: else {
1687: $ENV{'user.error.msg'}=
1688: $r->uri.":vgr:0:0:Cannot view grades for complete course";
1689:
1690: return HTTP_NOT_ACCEPTABLE;
1691: }
1692: }
1693: 1;
1694: __END__
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