Annotation of loncom/interface/lonstatistics.pm, revision 1.18
1.1 albertel 1: # The LearningOnline Network with CAPA
2: # (Publication Handler
3: #
1.18 ! minaeibi 4: # $Id: lonstatistics.pm,v 1.14 2002/03/26 18:11:32 minaeibi Exp $
1.1 albertel 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
1.15 minaeibi 30: # 5/5,7/9,7/25/1,8/11,9/13,9/26,10/5,10/9,10/22,10/26 Behrouz Minaei
1.14 minaeibi 31: # 11/1,11/4,11/16,12/14,12/16,12/18,12/20,12/31 Behrouz Minaei
1.1 albertel 32: # YEAR=2002
1.18 ! minaeibi 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 Behrouz Minaei
1.14 minaeibi 35: #
1.1 albertel 36: ###
37:
1.3 minaeibi 38: package Apache::lonstatistics;
1.1 albertel 39:
1.15 minaeibi 40: use strict;
1.1 albertel 41: use Apache::Constants qw(:common :http);
42: use Apache::lonnet();
43: use Apache::lonhomework;
1.12 minaeibi 44: use Apache::loncommon;
1.1 albertel 45: use HTML::TokeParser;
46: use GDBM_File;
47:
48: # -------------------------------------------------------------- Module Globals
49: my %hash;
50: my %CachData;
51: my %GraphDat;
1.12 minaeibi 52: my %OpResp;
1.1 albertel 53: my %maps;
1.5 minaeibi 54: my %mapsort;
1.1 albertel 55: my %section;
56: my %StuBox;
57: my %DiscFac;
1.7 minaeibi 58: my %DisUp;
59: my %DisLow;
60: my $UpCnt;
1.1 albertel 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;
1.5 minaeibi 78: my $DiscFlag;
79: my $HWN;
80: my $P_Order;
1.15 minaeibi 81: my %foil_to_concept;
82: my @Concepts;
83: my %ConceptData;
1.6 minaeibi 84: my %Header = (0,"Homework Sets Order",1,"#Stdnts",2,"Tries",3,"Mod",
1.5 minaeibi 85: 4,"Mean",5,"#YES",6,"#yes",7,"%Wrng",8,"DoDiff",
1.15 minaeibi 86: 9,"S.D.",10,"Skew.",11,"D.F.1st",12,"D.F.2nd");
1.18 ! minaeibi 87: my %Answer = ();
1.15 minaeibi 88:
89: sub InitAnalysis {
90: my ($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__/,$Answ,2);
1.18 ! minaeibi 104: %Answer=();
1.15 minaeibi 105: %Answer=&Apache::lonnet::str2hash($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: }
123: }
124: return $symb;
125: }
126:
127:
128: sub Interval {
1.16 minaeibi 129: my ($rid,$part,$symb)=@_;
1.15 minaeibi 130: my $Int=$ConceptData{"Interval"};
1.16 minaeibi 131: my $due = &Apache::lonnet::EXT('resource.$part.duedate',$symb)+1;
132: my $opn = &Apache::lonnet::EXT('resource.$part.opendate',$symb);
1.15 minaeibi 133: my $add=int(($due-$opn)/$Int);
134: $ConceptData{"Int.0"}=$opn;
135: for (my $i=1;$i<$Int;$i++) {
136: $ConceptData{"Int.$i"}=$opn+$i*$add;
137: }
138: $ConceptData{"Int.$Int"}=$due;
139: for (my $i=0;$i<$Int;$i++) {
140: for (my $n=0; $n<=$#Concepts; $n++ ) {
141: my $tmp=$Concepts[$n];
142: $ConceptData{"$tmp.$i.true"}=0;
143: $ConceptData{"$tmp.$i.false"}=0;
144: }
145: }
146: }
147:
148:
149: sub ShowOpGraph {
150: my ($InpStr, $Int_No)=@_;
1.16 minaeibi 151: my ($rid,$part)=split(/\:/,substr($InpStr,8));
1.15 minaeibi 152: $ConceptData{"Interval"}=$Int_No;
1.16 minaeibi 153: my $symb=&InitAnalysis($rid,$students[0]);
154: &Interval($rid,$part,$symb);
1.15 minaeibi 155: my $URI = $hash{'src_'.$rid};
156: my $Src = $hash{'title_'.$rid};
157: $Src =~ s/\ /"_"/eg;
158: $r->print('<br><b>'.$URI.'</b>');
159: $r->rflush();
160:
1.16 minaeibi 161: &Create_PrgWin();
162: &Update_PrgWin("Starting to analyze problem");
1.15 minaeibi 163: for (my $index=0;$index<=$#students;$index++) {
164: &Update_PrgWin($index);
165: &OpStatus($rid,$students[$index]);
166: }
167: &Close_PrgWin();
168:
169: for (my $k=0; $k<$Int_No; $k++ ) {
1.18 ! minaeibi 170: &DrawGraph($k,$Src);
1.15 minaeibi 171: }
1.17 minaeibi 172: #$Apache::lonxml::debug=1;
173: #&Apache::lonhomework::showhash(%ConceptData);
174: #$Apache::lonxml::debug=0;
1.15 minaeibi 175: my $Answ=&Apache::lonnet::ssi($URI);
176: $r->print("<br><b>Here you can see the Problem:</b><br>$Answ");
177: }
178:
1.18 ! minaeibi 179:
! 180: sub DrawGraph {
! 181: my ($k,$Src)=@_;
1.15 minaeibi 182: my $Max=0;
183: my @data1;
184: my @data2;
1.18 ! minaeibi 185: my $Correct=0;
! 186: my $Wrong=0;
! 187: # Adjust Data and find the Max
1.15 minaeibi 188: for (my $n=0; $n<=$#Concepts; $n++ ) {
189: my $tmp=$Concepts[$n];
190: $data1[$n]=$ConceptData{"$tmp.$k.true"};
1.18 ! minaeibi 191: $Correct+=$data1[$n];
1.15 minaeibi 192: $data2[$n]=$ConceptData{"$tmp.$k.false"};
1.18 ! minaeibi 193: $Wrong+=$data2[$n];
1.15 minaeibi 194: my $Sum=$data1[$n]+$data2[$n];
195: if ( $Max<$Sum ) {$Max=$Sum;}
196: }
197: for (my $n=0; $n<=$#Concepts; $n++ ) {
198: if ($data1[$n]+$data2[$n]<$Max) {
199: $data2[$n]+=$Max-($data1[$n]+$data2[$n]);
200: }
201: }
1.18 ! minaeibi 202: my $P_No = $#data1+1;
! 203: # $r->print('<br><b>From: ['.localtime($ConceptData{'Int.'.($k-1)}).
! 204: # '] To: ['.localtime($ConceptData{"Int.$k"}).']</b>');
! 205: my $Str = "\n".'<table border=2>'.
! 206: "\n".'<tr>'.
! 207: "\n".'<th> # </th>'.
! 208: "\n".'<th> Concept </th>'.
! 209: "\n".'<th> Correct </th>'.
! 210: "\n".'<th> Wrong </th>'.
! 211: "\n".'</tr>';
1.15 minaeibi 212:
1.18 ! minaeibi 213: for (my $n=0; $n<=$#Concepts; $n++ ) {
! 214: $Str .= "\n"."<tr>".
! 215: "\n"."<td>".($n+1)."</td>".
! 216: "\n"."<td bgcolor=#FFFFDD> ".$Concepts[$n]." </td>".
! 217: "\n"."<td bgcolor=#DDFFDD> ".$data1[$n]." </td>".
! 218: "\n"."<td bgcolor=#FFDDDD> ".$data2[$n]." </td>".
! 219: "\n"."</tr>";
! 220: }
! 221: $Str.='<td></td><td><b>From:['.localtime($ConceptData{'Int.'.($k-1)}).
! 222: '] To: ['.localtime($ConceptData{"Int.$k"}).
! 223: "]</b></td><td>$Correct</td><td>$Wrong</td>";
1.15 minaeibi 224:
1.18 ! minaeibi 225: $Str .= "\n".'</table>';
1.15 minaeibi 226:
227: $r->print($Str);
1.18 ! minaeibi 228:
! 229: if ( $Max > 1 ) {
! 230: $Max += (10 - $Max % 10);
! 231: $Max = int($Max);
! 232: } else { $Max = 1; }
! 233:
! 234: if ( $Max > 1 ) {
! 235: $Max += (10 - $Max % 10);
! 236: $Max = int($Max);
! 237: } else { $Max = 1; }
1.15 minaeibi 238: my $Titr=($ConceptData{'Interval'}>1) ? $Src.'_interval_'.$k : $Src;
1.18 ! minaeibi 239: # $GData=$Titr.'&Concepts'.'&'.'Answers'.'&'.$Max.'&'.$P_No.'&'.$data1.'&'.$data2;
! 240: $GData="$Titr&Concepts&Answers&$Max&$P_No&".
! 241: (join(',',@data1)).'&'.(join(',',@data2));
! 242:
! 243: $r->print('<br><IMG src="/cgi-bin/graph.gif?'.$GData.'" />');
1.15 minaeibi 244: }
245:
246:
247: sub AnalyzeProblem {
248: # -------------------------------- Selecting the number of intervals
249: my $OpSel='';
250: my $CurInt = $ENV{'form.interval'};
251: if ($CurInt eq '') {$CurMap = '1';}
252: my $Ptr = '<b>Select number of intervals</b>'."\n".
253: '<select name="interval">'."\n";
254: for (my $n=1;$n<=7;$n++) {
255: $Ptr .= '<option';
256: if ($CurInt eq $n) {$Ptr .= ' selected';}
257: $Ptr .= '>'.$n."</option>"."\n";
258: }
259: $Ptr .= '</select>'."\n";
260: $r->print( $Ptr );
261:
262: $r->print('<br><b> Option Response Problems in this course:</b><br><br>');
263: my $Str = "\n".'<table border=2>'.
264: "\n".'<tr>'.
265: "\n".'<th> # </th>'.
266: "\n".'<th> Problem Title </th>'.
267: "\n".'<th> Resouse </th>'.
268: "\n".'<th> Address </th>'.
269: "\n".'</tr>';
270:
271: my $P_No=1;
272: foreach (sort keys %OpResp) {
1.16 minaeibi 273: my ($rid,$part)=split(/\:/,$OpResp{$_});
274: my $Temp = '<a href="'.$hash{'src_'.$rid}.
275: '" target="_blank">'.$hash{'title_'.$rid}.'</a>';
1.15 minaeibi 276: $Str .= "\n"."<tr>".
277: "\n"."<td> $P_No </td>".
278: "\n"."<td bgcolor=#DDFFDD> ".$Temp." </td>".
1.16 minaeibi 279: "\n"."<td bgcolor=#EEFFCC> ".$hash{'src_'.$rid}." </td>".
280: "\n"."<td> ".'<input type="submit" name="sort" value="'.'Analyze_'.$rid.'" />'.'</td>'.
1.15 minaeibi 281: "\n"."</tr>";
282: $P_No++;
283: }
284: $Str .= "\n".'</table>';
285: $Str .= "\n".'</form>';
286: $r->print($Str);
287: $r->rflush();
288: }
289:
290:
291: sub Decide {
292: my ($type,$foil,$time)=@_;
293: my $k=0;
294: while ($time>$ConceptData{'Int.'.($k+1)} &&
295: $k<$ConceptData{'Interval'}) {$k++;}
296: $ConceptData{"$foil_to_concept{$foil}.$k.$type"}++;
297: }
298:
299:
300: sub OpStatus {
301: my ($rid,$student)=@_;
302: my ($uname,$udom)=split(/\:/,$student);
303: my $code='U';
304: $rid=~/(\d+)\.(\d+)/;
305: my $symb=&Apache::lonnet::declutter($hash{'map_id_'.$1}).'___'.$2.'___'.
306: &Apache::lonnet::declutter($hash{'src_'.$rid});
307: my %reshash=&Apache::lonnet::restore($symb,$cid,$udom,$uname);
308: my @True = ();
309: my @False = ();
310: my $flag=0;
311: if ($reshash{'version'}) {
1.18 ! minaeibi 312: my $tries=0;
! 313: &Apache::lonhomework::showhash(%Answer);
1.15 minaeibi 314: for (my $version=1;$version<=$reshash{'version'};$version++) {
315: my $time=$reshash{"$version:timestamp"};
1.18 ! minaeibi 316:
! 317: foreach my $key (sort(split(/\:/,$reshash{$version.':keys'}))) {
! 318: if (($key=~/\.(\w+)\.(\w+)\.submission$/)) {
! 319: my $Id1 = $1; my $Id2 = $2;
! 320: #check if this is a repeat submission, if so skip it
! 321: if ($reshash{"$version:resource.$Id1.previous"}) { next; }
! 322: #if no solved this wasn't a real submission, ignore it
! 323: if (!defined($reshash{"$version:resource.$Id1.solved"})) {
! 324: &Apache::lonxml::debug("skipping ");
! 325: next;
! 326: }
! 327: my $Resp = $reshash{"$version:$key"};
1.15 minaeibi 328: my %submission=&Apache::lonnet::str2hash($Resp);
329: foreach (keys %submission) {
1.18 ! minaeibi 330: my $Ansr = $Answer{"$Id1.$Id2.foil.value.$_"};
1.15 minaeibi 331: if ($submission{$_}) {
332: if ($submission{$_} eq $Ansr) {
333: &Decide("true",$_,$time );
334: }
335: else {&Decide("false",$_,$time );}
336: }
337: }
338: }
339: }
340: }
341: }
342: }
1.11 minaeibi 343:
344:
1.7 minaeibi 345: #------- Processing upperlist and lowerlist according to each problem
346: sub ProcessDisc {
347: my @List = @_;
348: @List = sort (@List);
349: my $Count = $#List+1;
350: my $Prb;
351: my @Dis;
352: my $Slvd=0;
353: my $tmp;
1.8 minaeibi 354: my $Sum1=0;
355: my $Sum2=0;
1.7 minaeibi 356: my $nIdx=0;
357: my $nStud=0;
358: my %Proc;
359: undef %Proc;
360: while ($nIdx<$Count) {
361: ($Prb,$tmp)=split(/\=/,$List[$nIdx]);
362: @Dis=split(/\+/,$tmp);
363: my $Temp = $Prb;
364: do {
365: $nIdx++;
366: $nStud++;
1.8 minaeibi 367: $Sum1 += $Dis[0];
368: $Sum2 += $Dis[1];
1.7 minaeibi 369: ($Prb,$tmp)=split(/\=/,$List[$nIdx]);
370: @Dis=split(/\+/,$tmp);
371: } while ( $Prb eq $Temp && $nIdx < $Count );
1.8 minaeibi 372: # $Proc{$Temp}=($Sum1/$nStud).':'.$nStud;
373: $Proc{$Temp}=($Sum1/$nStud).':'.($Sum2/$nStud);
1.15 minaeibi 374: # $r->print("$nIdx) $Temp --> ($nStud) $Proc{$Temp} <br>");
1.8 minaeibi 375: $Sum1=0;
376: $Sum2=0;
1.7 minaeibi 377: $nStud=0;
378: }
379: return %Proc;
380: }
381:
382:
383: #------- Creating Discimination factor
384: sub Discriminant {
385: my $Count=0;
386: foreach (keys(%DiscFac)){
387: $Count++;
388: }
389: $UpCnt = int(0.27*$Count);
390: my $low=0;
391: my $up=$Count-$UpCnt;
392: my @UpList=();
393: my @LowList=();
394: $Count=0;
395: foreach my $key (sort(keys(%DiscFac))){
396: $Count++;
397: #$r->print("<br>$Count) $key = $DiscFac{$key}");
398: if ($low < $UpCnt || $Count > $up) {
399: $low++;
400: my $str=$DiscFac{$key};
401: foreach(split(/\:/,$str)){
402: if ($_) {
403: if ($low<$UpCnt){push(@LowList,$_);}
404: else {push(@UpList,$_);}
405: }
406: }
407: }
408: }
409: %DisUp=&ProcessDisc(@UpList);
410: %DisLow=&ProcessDisc(@LowList);
411: }
412:
413:
1.1 albertel 414: sub NumericSort {
415: $a <=> $b;
416: }
417:
418: # ------ Create different Student Report
419: sub StudentReport {
420: my ($sname,$sdom)=@_;
421: if ( $sname eq 'All Students' ) {
422: $r->print( '<h3><font color=blue>WARNING:
423: Please select a student</font></h3>' );
424: return;
425: }
1.14 minaeibi 426: my %result = &Apache::lonnet::dump($cid,$sdom,$sname);
1.1 albertel 427: my $ResId;
1.5 minaeibi 428: my $PrOrd;
1.1 albertel 429: my $Code;
430: my $Tries;
431: my $TotalTries = 0;
432: my $ParCr = 0;
433: my $Wrongs;
434: my %TempHash;
435: my $Version;
436: my $LatestVersion;
437: my $PtrTry='';
438: my $PtrCod='';
439: my $SetNo=0;
440: my $Str = "\n".'<table border=2>'.
441: "\n".'<tr>'.
442: "\n".'<th> # </th>'.
443: "\n".'<th> Set Title </th>'.
444: "\n".'<th> Results </th>'.
445: "\n".'<th> Tries </th>'.
446: "\n".'</tr>';
1.14 minaeibi 447: my ($temp)=keys(%result);
448: unless ($temp=~/^error\:/) {
1.5 minaeibi 449: foreach my $CurCol (@cols) {
450: if (!$CurCol){
1.1 albertel 451: my $Set=&Apache::lonnet::declutter($hash{'map_id_'.$1});
452: if ( $Set ) {
453: $SetNo++;
454: $Str .= "\n"."<tr>".
455: "\n"."<td> $SetNo </td>".
456: "\n"."<td> $Set </td>".
457: "\n"."<td> $PtrCod </td>".
458: "\n"."<td> $PtrTry</td>".
459: "\n"."</tr>";
460: }
461: $PtrTry='';
462: $PtrCod='';
463: next;
464: }
1.5 minaeibi 465: ($PrOrd,$ResId)=split(/\:/,$CurCol);
1.1 albertel 466: $ResId=~/(\d+)\.(\d+)/;
467: my $Map = &Apache::lonnet::declutter( $hash{'map_id_'.$1} );
468: if ( $CurMap ne 'All Maps' ) {
469: my ( $ResMap, $NameMap ) = split(/\=/,$CurMap);
470: if ( $Map ne $ResMap ) { next; }
471: }
472: my $meta=$hash{'src_'.$ResId};
473: my $PartNo = 0;
474: undef %TempHash;
1.5 minaeibi 475: foreach (split(/\,/,&Apache::lonnet::metadata($meta,'keys'))){
1.12 minaeibi 476: if ($_=~/^stores\_(\w+)\_tries$/) {
1.1 albertel 477: my $Part=&Apache::lonnet::metadata($meta,$_.'.part');
478: if ( $TempHash{"$Part"} eq '' ) {
479: $TempHash{"$Part"} = $Part;
480: $TempHash{$PartNo}=$Part;
481: $TempHash{"$Part.Code"} = '-';
1.5 minaeibi 482: $TempHash{"$Part.PrOrd"} = $PrOrd+$PartNo;
1.1 albertel 483: $PartNo++;
484: }
485: }
1.5 minaeibi 486: }
1.1 albertel 487:
488: my $Prob = $Map.'___'.$2.'___'.
489: &Apache::lonnet::declutter( $hash{'src_'.$ResId} );
490: $Code='U';
491: $Tries = 0;
492: $Wrongs = 0;
1.7 minaeibi 493: $LatestVersion = $result{"version:$Prob"};
1.1 albertel 494: if ( $LatestVersion ) {
495: for ( my $Version=1; $Version<=$LatestVersion; $Version++ ) {
496: my $vkeys = $result{"$Version:keys:$Prob"};
497: my @keys = split(/\:/,$vkeys);
498:
499: foreach my $Key (@keys) {
500: if (($Key=~/\.(\w+)\.solved$/) && ($Key!~/^\d+\:/)) {
501: my $Part = $1;
502: $Tries = $result{"$Version:$Prob:resource.$Part.tries"};
503: $TempHash{"$Part.Tries"} = ($Tries) ? $Tries : 0;
504: $TotalTries += $Tries;
505: my $Val = $result{"$Version:$Prob:resource.$Part.solved"};
506: if ( $Val eq 'correct_by_student' )
507: { $Wrongs = $Tries - 1; $Code = 'Y'; }
508: elsif ( $Val eq 'correct_by_override' )
509: { $Wrongs = $Tries - 1; $Code = 'y'; }
510: elsif ( $Val eq 'incorrect_attempted' ||
511: $Val eq 'incorrect_by_override' )
512: { $Wrongs = $Tries; $Code = 'N'; }
513: $TempHash{"$Part.Code"} = $Code;
514: $TempHash{"$Part.Wrongs"} = $Wrongs;
515: }
516: }
1.7 minaeibi 517: }
1.1 albertel 518: for ( my $n = 0; $n < $PartNo; $n++ ) {
519: my $part = $TempHash{$n};
520: if ($PtrTry ne '') {$PtrTry .= ',';}
521: $PtrTry .= "$TempHash{$part.'.Tries'}";
522: $PtrCod .= "$TempHash{$part.'.Code'}";
523: }
524: }
525: else {
526: for(my $n=0; $n<$PartNo; $n++) {
527: if ($PtrTry ne '') {$PtrTry .= ',';}
528: $PtrTry .= "0";
529: $PtrCod .= "-";
530: }
531: }
532: }
533: }
534: $Str .= "\n".'</table>';
535: $r->print($Str);
536: $r->rflush();
537: }
538:
1.5 minaeibi 539: sub CreateTable {
1.18 ! minaeibi 540: my ($Hd, $Hid)=@_;
! 541: if ($ENV{'form.showcsv'}) {
! 542: if ( $Hd == 1 ) {
! 543: $r->print('<br>"'.$hash{'title_'.$Hid}.'","'.$hash{'src_'.$Hid}.'"');
! 544: }
! 545: return;
! 546: }
1.7 minaeibi 547: my $ColNo=0;
548: foreach (keys(%Header)){
549: $ColNo++;
550: }
1.5 minaeibi 551: if ( $Hd == 1 ) {
552: $r->print('<br><a href="'.$hash{'src_'.$Hid}.
1.7 minaeibi 553: '" target="_blank">'.$hash{'title_'.$Hid}.'</a>');
1.5 minaeibi 554: }
555: my $Result = "\n".'<table border=2>';
556: $Result .= '<tr><th>P#</th>'."\n";
1.7 minaeibi 557: for ( my $nIdx=0; $nIdx < $ColNo; $nIdx++ ) {
1.5 minaeibi 558: $Result .= '<th>'.'<input type="submit" name="sort" value="'.
559: $Header{$nIdx}.'" />'.'</th>'."\n";
560: }
561: $Result .= "\n".'</tr>'."\n";
562: $r->print( $Result );
563: $r->rflush();
564: }
1.1 albertel 565:
1.5 minaeibi 566: sub CloseTable {
1.18 ! minaeibi 567: if ($ENV{'form.showcsv'}) {
! 568: return;
! 569: }
1.5 minaeibi 570: $r->print("\n".'</table>'."\n");
571: $r->rflush();
572: }
573:
1.1 albertel 574: # ------------------------------------------- Prepare Statistics Table
575: sub PreStatTable {
576: my $CacheDB = "/home/httpd/perl/tmp/$ENV{'user.name'}".
577: "_$ENV{'user.domain'}_$cid\_statistics.db";
578: my $GraphDB = "/home/httpd/perl/tmp/$ENV{'user.name'}".
579: "_$ENV{'user.domain'}_$cid\_graph.db";
1.6 minaeibi 580: my $OpSel11='';
581: my $OpSel12='';
582: my $OpSel13='';
583: my $Status = $ENV{'form.status'};
584: if ( $Status eq 'Any' ) { $OpSel13='selected'; }
585: elsif ($Status eq 'Expired' ) { $OpSel12 = 'selected'; }
586: else { $OpSel11 = 'selected'; }
1.1 albertel 587:
588: my $Ptr = '';
1.6 minaeibi 589: $Ptr .= '<br><b> Student Status: </b>'."\n".
590: '<select name="status">'.
591: '<option '.$OpSel11.' >Active</option>'."\n".
592: '<option '.$OpSel12.' >Expired</option>'."\n".
593: '<option '.$OpSel13.' >Any</option> </select> '."\n";
594: $Ptr .= ' ';
595: $Ptr .= '<input type=submit name=sort value="Recalculate Statistics"/>'."\n";
1.1 albertel 596:
597: $Ptr .= '<br><b> Sorting Type: </b>'."\n".
598: '<select name="order"> <option '.$OpSel1.' >Ascending</option>'."\n".
599: '<option '.$OpSel2.'>Descending</option> </select> '."\n";
600: $Ptr .= ' ';
601: $Ptr .= '<input type="submit" name="sort" value="DoDiff Graph" />'."\n";
602: $Ptr .= ' ';
603: $Ptr .= '<input type="submit" name="sort" value="%Wrong Graph" />'."\n";
604:
605: $Ptr .= '<pre>'.
1.7 minaeibi 606: '<b> #Stdnts</b>: Total Number of Students opened the problem.<br>'.
607: '<b> Tries </b>: Total Number of Tries for solving the problem.<br>'.
1.18 ! minaeibi 608: '<b> Max </b> : Maximunm Number of Tries for solving the problem.<br>'.
! 609: '<b> Avg. </b>: Average Number of the tries. [ Tries / #Stdnts ]<br>'.
1.7 minaeibi 610: '<b> #YES </b>: Number of students solved the problem correctly.<br>'.
611: '<b> #yes </b>: Number of students solved the problem by override.<br>'.
612: '<b> %Wrng </b>: Percentage of students tried to solve the problem but'.
1.2 minaeibi 613: ' still incorrect. [ 100*((#Stdnts-(#YES+#yes))/#Stdnts) ]<br>'.
1.8 minaeibi 614: # ' DoDiff : Degree of Difficulty of the problem. [ Tries/(#YES+#yes+0.1) ]<br>'. Kashy formula
615: '<b> DoDiff </b>: Degree of Difficulty of the problem. [ 1 - ((#YES+#yes) / Tries) ]<br>'. #Gerd formula
1.7 minaeibi 616: '<b> S.D. </b> : Standard Deviation of the tries.'.
1.18 ! minaeibi 617: '[ sqrt(sum((Xi - Avg.)^2)) / (#Stdnts-1)'.
1.5 minaeibi 618: ' where Xi denotes every student\'s tries ]<br>'.
1.7 minaeibi 619: '<b> Skew. </b>: Skewness of the students tries.'.
1.18 ! minaeibi 620: ' [ (sqrt( sum((Xi - Avg.)^3) / #Stdnts)) / (S.D.^3) ]<br>'.
1.8 minaeibi 621: '<b> Dis.F. </b>: Discrimination Factor: A Standard for '.
622: 'evaluating the problem according to a Criterion<br>'.
623: '<b> [Applied Criterion in %27 Upper Students - '.
624: 'Applied the same Criterion in %27 Lower Students]</b><br>'.
1.14 minaeibi 625: '<b> 1st Criterion</b> for Sorting the Students: '.
626: '<b>Sum of Partial Credit Awarded / Total Number of Tries</b><br>'.
627: '<b> 2nd Criterion</b> for Sorting the Students: '.
628: '<b>Total number of Correct Answers / Total Number of Tries</b>'.
1.1 albertel 629: '</pre>';
630:
631: $r->print($Ptr);
1.18 ! minaeibi 632:
! 633: $r->print('Output CSV format: <input type=checkbox name=showcsv onClick="submit()"');
! 634: if ($ENV{'form.showcsv'}) { $r->print(' checked'); }
! 635: $r->print('>');
! 636:
1.1 albertel 637: $r->rflush();
638:
639: if ((-e "$CacheDB")&&($ENV{'form.sort'} ne 'Recalculate Statistics')) {
640: if (tie(%CachData,'GDBM_File',"$CacheDB",&GDBM_READER,0640)) {
641: tie(%GraphDat,'GDBM_File',$GraphDB,&GDBM_WRCREAT,0640);
642: &Cache_Statistics();
643: }
644: else {
645: $r->print("Unable to tie hash to db file");
646: }
647: }
648: else {
649: if (tie(%CachData,'GDBM_File',$CacheDB,&GDBM_WRCREAT,0640)) {
650: tie(%GraphDat,'GDBM_File',$GraphDB,&GDBM_WRCREAT,0640);
651: foreach (keys %DiscFac) {delete $CachData{$_};}
652: foreach (keys %CachData) {delete $CachData{$_};}
653: $DiscFlag=0;
654: &Build_Statistics();
655: }
656: else {
657: $r->print("Unable to tie hash to db file");
658: }
659: }
1.12 minaeibi 660:
1.15 minaeibi 661: # $r->print('Total instances of the problems : '.($p_count*($#students+1)));
1.1 albertel 662: untie(%CachData);
663: untie(%GraphDat);
664: }
665:
666:
667: # ------------------------------------- Find the section of student in a course
668:
669: sub usection {
1.6 minaeibi 670: my ($udom,$unam,$courseid,$ActiveFlag)=@_;
1.1 albertel 671: $courseid=~s/\_/\//g;
672: $courseid=~s/^(\w)/\/$1/;
1.6 minaeibi 673: foreach (split(/\&/,&Apache::lonnet::reply('dump:'.
674: $udom.':'.$unam.':roles',
675: &Apache::lonnet::homeserver($unam,$udom)))){
1.1 albertel 676: my ($key,$value)=split(/\=/,$_);
677: $key=&Apache::lonnet::unescape($key);
678: if ($key=~/^$courseid(?:\/)*(\w+)*\_st$/) {
679: my $section=$1;
680: if ($key eq $courseid.'_st') { $section=''; }
681: my ($dummy,$end,$start)=split(/\_/,&Apache::lonnet::unescape($value));
1.6 minaeibi 682: if ( $ActiveFlag ne 'Any' ) {
683: my $now=time;
684: my $notactive=0;
685: if ($start) {
686: if ($now<$start) { $notactive=1; }
687: }
688: if ($end) {
689: if ($now>$end) { $notactive=1; }
690: }
691: if ((($ActiveFlag eq 'Expired') && $notactive == 1) ||
692: (($ActiveFlag eq 'Active') && $notactive == 0 ) ) {
693: return $section;
694: }
695: else { return '-1'; }
696: }
1.1 albertel 697: return $section;
698: }
1.6 minaeibi 699: }
700: return '-1';
1.1 albertel 701: }
702:
703:
704: # ------ Dump the Student's DB file and handling the data for statistics table
705: sub ExtractStudentData {
1.14 minaeibi 706: my $student=shift;
1.1 albertel 707: my ($sname,$sdom) = split( /\:/, $student );
1.14 minaeibi 708: my %result = &Apache::lonnet::dump($cid,$sdom,$sname);
1.1 albertel 709: my $ResId;
1.5 minaeibi 710: my $PrOrd;
1.1 albertel 711: my $Dis = '';
712: my $Code;
713: my $Tries;
714: my $ParCr;
715: my $TotalTries = 0;
716: my $TotalOpend = 0;
717: my $ProbSolved = 0;
718: my $ProbTot = 0;
719: my $TimeTot = 0;
720: my $TotParCr = 0;
721: my $Wrongs;
722: my %TempHash;
1.15 minaeibi 723: my $Version;
1.1 albertel 724: my $LatestVersion;
725: my $SecLimit;
726: my $MapLimit;
1.14 minaeibi 727: my ($temp)=keys(%result);
728: unless ($temp=~/^error\:/) {
1.5 minaeibi 729: foreach my $CurCol(@cols) {
730: ($PrOrd,$ResId)=split(/\:/,$CurCol);
731: if ( !$CurCol ) { next; }
1.1 albertel 732: $ResId=~/(\d+)\.(\d+)/;
1.5 minaeibi 733: my $MapId=$1;
734: my $PrbId=$2;
1.15 minaeibi 735: my $MapOrg = $hash{'map_id_'.$MapId};
736: my $Map = &Apache::lonnet::declutter($MapOrg);
1.1 albertel 737: if ( $CurMap ne 'All Maps' ) {
738: my ( $ResMap, $NameMap ) = split(/\=/,$CurMap);
739: if ( $Map ne $ResMap ) { next; }
740: }
741: my $meta=$hash{'src_'.$ResId};
742: my $PartNo = 0;
743: $Dis .= ':';
744: undef %TempHash;
1.12 minaeibi 745:
746: foreach (split(/\,/,&Apache::lonnet::metadata($meta,'keys'))) {
747: if ($_=~/^stores\_(\w+)\_tries$/) {
1.1 albertel 748: my $Part=&Apache::lonnet::metadata($meta,$_.'.part');
749: if ( $TempHash{"$Part"} eq '' ) {
750: $TempHash{"$Part"} = $Part;
751: $TempHash{$PartNo}=$Part;
752: $TempHash{"$Part.Code"} = 'U';
1.5 minaeibi 753: $TempHash{"$Part.PrOrd"} = $PrOrd+$PartNo;
1.1 albertel 754: $PartNo++;
755: }
1.14 minaeibi 756: #my $Part=&Apache::lonnet::metadata($meta,$_.'.part');
1.1 albertel 757: }
1.5 minaeibi 758: }
1.15 minaeibi 759: &Apache::lonnet::declutter( $hash{'src_'.$ResId} );
760: my $URI = $hash{'src_'.$ResId};
1.5 minaeibi 761: my $Prob = $Map.'___'.$PrbId.'___'.
1.15 minaeibi 762: &Apache::lonnet::declutter($URI);
1.1 albertel 763: $Code='U';
764: $Tries = 0;
765: $ParCr = 0;
766: $Wrongs = 0;
1.15 minaeibi 767: $LatestVersion = $result{"version:$Prob"};
1.1 albertel 768: if ( $LatestVersion ) {
769: for ( my $Version=1; $Version<=$LatestVersion; $Version++ ) {
770: my $vkeys = $result{"$Version:keys:$Prob"};
771: my @keys = split(/\:/,$vkeys);
772: foreach my $Key (@keys) {
773: if (($Key=~/\.(\w+)\.solved$/) && ($Key!~/^\d+\:/)) {
774: my $Part = $1;
775: $Tries = $result{"$Version:$Prob:resource.$Part.tries"};
776: $ParCr = $result{"$Version:$Prob:resource.$Part.awarded"};
777: my $Time = $result{"$Version:$Prob:timestamp"};
778: $TempHash{"$Part.Time"} = ($Time) ? $Time : 0;
779: $TempHash{"$Part.Tries"} = ($Tries) ? $Tries : 0;
780: $TempHash{"$Part.ParCr"} = ($ParCr) ? $ParCr : 0;
781: $TotalTries += $TempHash{"$Part.Tries"};
782: $TotParCr += $TempHash{"$Part.ParCr"};
783: my $Val = $result{"$Version:$Prob:resource.$Part.solved"};
784: if ( $Val eq 'correct_by_student' )
785: { $Wrongs = $Tries - 1; $Code = 'C'; }
786: elsif ( $Val eq 'correct_by_override' )
787: { $Wrongs = $Tries - 1; $Code = 'O'; }
788: elsif ( $Val eq 'incorrect_attempted' ||
789: $Val eq 'incorrect_by_override' )
790: { $Wrongs = $Tries; $Code = 'I'; }
791: $TempHash{"$Part.Code"} = $Code;
792: $TempHash{"$Part.Wrongs"} = $Wrongs;
793: }
794: }
795: }
796: for ( my $n = 0; $n < $PartNo; $n++ ) {
797: my $part = $TempHash{$n};
798: my $Yes = 0;
799: if ( $TempHash{$part.'.Code'} eq 'C' ||
800: $TempHash{$part.'.Code'} eq 'O' )
1.7 minaeibi 801: {$ProbSolved++;$Yes=1;}
802:
803: # my $ptr = "$hash{'title_'.$ResId}";
1.12 minaeibi 804: my $ptr = $TempHash{$part.'.PrOrd'}.'&'.$ResId;
1.7 minaeibi 805:
1.1 albertel 806: if ( $PartNo > 1 ) {
1.5 minaeibi 807: $ptr .= "*(part $part)";
1.12 minaeibi 808: $Dis .= '&';
1.1 albertel 809: }
810: my $Fac = ($TempHash{"$part.Tries"}) ?
811: ($TempHash{"$part.ParCr"}/$TempHash{"$part.Tries"}) : 0;
812: my $DisF;
813: if ( $Fac > 0 && $Fac < 1 ) {
814: $DisF = sprintf( "%.4f", $Fac );
815: }
816: else {$DisF = $Fac;}
1.15 minaeibi 817: # $DisF .= '+'.$TempHash{"$part.Time"};33333333
1.1 albertel 818: $TimeTot += $TempHash{"$part.Time"};
1.7 minaeibi 819: $Dis .= $TempHash{$part.'.PrOrd'}.'='.$DisF.'+'.$Yes;
1.12 minaeibi 820: $ptr .= "&$TempHash{$part.'.Tries'}".
821: "&$TempHash{$part.'.Wrongs'}".
822: "&$TempHash{$part.'.Code'}";
1.1 albertel 823: push (@list, $ptr);
824: $TotalOpend++;
825: $ProbTot++;
826: }
827: }
1.5 minaeibi 828: #else {
829: #for(my $n=0; $n<$PartNo; $n++) {
1.11 minaeibi 830: # push (@list, "$TempHash{'0'.'.PrOrd'}.':'.$ResId:0:0:U");
1.5 minaeibi 831: # $ProbTot++;
832: #}
833: #}
1.1 albertel 834: }
835: if ( $TotalTries ) {
836: my $DisFac = ( $TotalTries ) ? ($TotParCr/$TotalTries) : 0;
837: my $DisFactor = sprintf( "%.4f", $DisFac );
1.7 minaeibi 838: $DiscFac{$DisFactor}=$Dis;
839: #my $time;
840: #if ($ProbSolved){
841: #$time = int(($TimeTot/$ProbSolved)-10000000);
842: #}
843: #$DiscFac{($DisFactor.':'.$sname.':'.$ProbTot.':'.$TotalOpend.':'.
844: # $TotalTries.':'.$ProbSolved.':'.$time)}=$Dis;
1.1 albertel 845: }
846: }
847: #$r->print($sname.' PrCr= '.$TotParCr.' Slvd= '.$ProbSolved.' Tries='.$TotalTries.'<br>');
848: }
849:
850:
851: # ------------------------------------------------------------ Build page table
852: sub tracetable {
853: my ($rid,$beenhere)=@_;
1.12 minaeibi 854: my $IsMap=0;
1.1 albertel 855: $rid=~/(\d+)\.(\d+)/;
856: $maps{&Apache::lonnet::declutter($hash{'map_id_'.$1})}='';#$hash{'title_'.$rid};
1.5 minaeibi 857: #$maps{$HWN}=$hash{'title_'.$rid};
1.1 albertel 858: unless ($beenhere=~/\&$rid\&/) {
859: $beenhere.=$rid.'&';
860: if (defined($hash{'is_map_'.$rid})) {
861: my $cmap=$hash{'map_type_'.$hash{'map_pc_'.$hash{'src_'.$rid}}};
862: if ( $cmap eq 'sequence' || $cmap eq 'page' ) {
863: $cols[$#cols+1]=0;
1.5 minaeibi 864: $P_Order++;
865: $HWN=$P_Order;
1.12 minaeibi 866: $mapsort{$HWN} = $rid.':';
867: $IsMap=1;
868:
1.1 albertel 869: #$maps{&Apache::lonnet::declutter($hash{'src_'.$rid})}=
870: # $hash{'title_'.$rid};
871: }
872: if ((defined($hash{'map_start_'.$hash{'src_'.$rid}})) &&
873: (defined($hash{'map_finish_'.$hash{'src_'.$rid}}))) {
1.5 minaeibi 874: my $frid=$hash{'map_finish_'.$hash{'src_'.$rid}};
1.1 albertel 875:
1.5 minaeibi 876: &tracetable($hash{'map_start_'.$hash{'src_'.$rid}},
877: '&'.$frid.'&');
1.1 albertel 878:
1.5 minaeibi 879: $cols[$#cols+1]=($P_Order+1).':'.$frid;
880:
881: my $meta=$hash{'src_'.$frid};
882: my $PartNo = 0;
1.14 minaeibi 883: my $Part;
1.13 minaeibi 884: # if ($IsMap==0){
1.5 minaeibi 885: if ($meta) {
886: if ($meta=~/\.(problem|exam|quiz|assess|survey|form)$/) {
887: foreach (split(/\,/,&Apache::lonnet::metadata($meta,'keys'))) {
1.12 minaeibi 888: if ($_=~/^stores\_(\w+)\_tries$/) {
1.14 minaeibi 889: $Part=&Apache::lonnet::metadata($meta,$_.'.part');
1.5 minaeibi 890: $P_Order++;
891: $mapsort{$HWN} .= '&'.$P_Order;
892: $PartNo++;
1.11 minaeibi 893: #$r->print('<br>'.$PartNo.'---'.$P_Order);
1.5 minaeibi 894: }
1.14 minaeibi 895: foreach my $K(split(/\,/,&Apache::lonnet::metadata($meta,'packages'))) {
896: if ($K=~/^optionresponse\_($Part)\_(\w+)$/) {
897: #$r->print('<br>'.$_.'...'.$P_Order.'---'.$Part);
1.16 minaeibi 898: $OpResp{$P_Order}="$frid:$Part";
1.14 minaeibi 899: }
900: }
1.5 minaeibi 901: }
902: }
903: }
1.1 albertel 904: }
1.13 minaeibi 905: # }
1.1 albertel 906: } else {
1.5 minaeibi 907: $cols[$#cols+1]=($P_Order+1).':'.$rid;
908: my $meta=$hash{'src_'.$rid};
909: my $PartNo = 0;
1.12 minaeibi 910: if ($meta) {
1.5 minaeibi 911: if ($meta=~/\.(problem|exam|quiz|assess|survey|form)$/) {
1.12 minaeibi 912: foreach my $Key(split(/\,/,&Apache::lonnet::metadata($meta,'keys'))) {
913: if ($Key=~/^stores\_(\w+)\_tries$/) {
914: my $Part=&Apache::lonnet::metadata($meta,$Key.'.part');
1.5 minaeibi 915: $P_Order++;
916: $mapsort{$HWN} .= '&'.$P_Order;
917: $PartNo++;
1.12 minaeibi 918: foreach (split(/\,/,&Apache::lonnet::metadata($meta,'packages'))) {
919: if ($_=~/^optionresponse\_($Part)\_(\w+)$/) {
920: #$r->print('<br>'.$_.'...'.$P_Order.'---'.$Part);
1.16 minaeibi 921: $OpResp{$P_Order}="$rid:$Part";;
1.12 minaeibi 922: }
923:
924: }
925:
1.5 minaeibi 926: }
927: }
928: }
1.12 minaeibi 929: }
1.1 albertel 930: }
931: if (defined($hash{'to_'.$rid})) {
1.5 minaeibi 932: foreach (split(/\,/,$hash{'to_'.$rid})){
1.1 albertel 933: &tracetable($hash{'goesto_'.$_},$beenhere);
1.5 minaeibi 934: }
1.1 albertel 935: }
936: }
937: }
938:
939: sub MySort {
1.6 minaeibi 940: if ( $Pos > 0 ) {
1.1 albertel 941: if ($ENV{'form.order'} eq 'Descending') {$b <=> $a;}
942: else { $a <=> $b; }
943: }
944: else {
945: if ($ENV{'form.order'} eq 'Descending') {$b cmp $a;}
946: else { $a cmp $b; }
947: }
948: }
949:
1.15 minaeibi 950: sub Create_PrgWin {
951: #----------- Create progress
1.1 albertel 952: $r->print(<<ENDPOP);
1.5 minaeibi 953: <script>
1.1 albertel 954: popwin=open('','popwin','width=400,height=100');
1.7 minaeibi 955: popwin.document.writeln('<html><body bgcolor="#88DDFF">'+
1.1 albertel 956: '<title>LON-CAPA Statistics</title>'+
957: '<h4>Computation Progress</h4>'+
958: '<form name=popremain>'+
959: '<input type=text size=35 name=remaining value=Starting></form>'+
960: '</body></html>');
961: popwin.document.close();
1.5 minaeibi 962: </script>
1.1 albertel 963: ENDPOP
964:
965: $r->rflush();
1.15 minaeibi 966: }
967:
968:
969: sub Update_PrgWin {
1.1 albertel 970: #----------- update progress
1.15 minaeibi 971: my $index = shift;
972: $r->print('<script>popwin.document.popremain.remaining.value="'.
973: 'Computing '.($index+1).'/'.($#students+1).': '.
974: $students[$index].'";</script>');
975: $r->rflush();
976: }
977:
978: sub Close_PrgWin {
979: #--------------------- close Progress Line
980: $r->print('<script>popwin.close()</script>');
981: $r->rflush();
982: }
1.1 albertel 983:
1.15 minaeibi 984: sub Build_Statistics {
985: &Create_PrgWin();
986: # ---------------------------- Gathering the Data of students' tries
987: for (my $index=0;$index<=$#students;$index++) {
988: &Update_PrgWin($index);
1.14 minaeibi 989: &ExtractStudentData($students[$index]);
1.1 albertel 990: }
1.7 minaeibi 991:
1.1 albertel 992: # -------------------- sorting the Data
1.7 minaeibi 993: $r->print('<script>popwin.document.popremain.remaining.value="'.
994: 'Calculating Discrimination Factors...";</script>');
995:
1.5 minaeibi 996: @list = sort (@list);
997:
1.7 minaeibi 998:
999: &Discriminant();
1000:
1.1 albertel 1001: $OpSel2='';
1002: $OpSel1='selected';
1003:
1004: $p_count = 0;
1005: my $nIdx = 0;
1006: my $dummy;
1007: my $p_val;
1008: my $ResId;
1009: my $NoElements = $#list + 1;
1010: #-------------------------------- loop for data representation
1.5 minaeibi 1011: foreach (sort keys %mapsort) {
1012: my ($Hid,$pr)=split(/\:/,$mapsort{$_});
1013: my @lpr=split(/\&/,$pr);
1014: &CreateTable(1,$Hid);
1015: for (my $i=1; $i<=$#lpr; $i++) {
1016: my %storestats=();
1.12 minaeibi 1017: my ($PrOrd,$Prob,$Tries,$Wrongs,$Code)=split(/\&/,$list[$nIdx]);
1.5 minaeibi 1018: my $Temp = $Prob;
1019: my $MxTries = 0;
1020: my $TotalTries = 0;
1021: my $YES = 0;
1022: my $Incorrect = 0;
1023: my $Override = 0;
1024: my $StdNo = 0;
1025: my @StdLst;
1026: while ( $PrOrd == $lpr[$i] )
1027: {
1028: $nIdx++;
1029: $StdNo++;
1030: $StdLst[ $StdNo ] = $Tries;
1031: $TotalTries += $Tries;
1032: if ( $MxTries < $Tries ) { $MxTries = $Tries; }
1033: if ( $Code eq 'C' ){ $YES++; }
1034: elsif( $Code eq 'I' ) { $Incorrect++; }
1035: elsif( $Code eq 'O' ) { $Override++; }
1036: elsif( $Code eq 'U' ) { $StdNo--; }
1.12 minaeibi 1037: ($PrOrd,$Prob,$Tries,$Wrongs,$Code)=split(/\&/,$list[$nIdx]);
1.5 minaeibi 1038: }
1039:
1040: $p_count++;
1041: my $Dummy;
1042: ($ResId,$Dummy)=split(/\*/,$Temp);
1.1 albertel 1043:
1.5 minaeibi 1044: $Temp = '<a href="'.$hash{'src_'.$ResId}.
1045: '" target="_blank">'.$hash{'title_'.$ResId}.$Dummy.'</a>';
1.15 minaeibi 1046:
1.5 minaeibi 1047: my $res = &Apache::lonnet::declutter($hash{'src_'.$ResId});
1048: my $urlres=$res;
1.1 albertel 1049:
1.5 minaeibi 1050: $ResId=~/(\d+)\.(\d+)/;
1051: my $Map = &Apache::lonnet::declutter( $hash{'map_id_'.$1} );
1052: $urlres=$Map;
1.1 albertel 1053:
1.5 minaeibi 1054: $res = '<a href="'.$hash{'src_'.$ResId}.'">'.$res.'</a>';
1055: #$Map = '<a href="'.$Map.'">'.$res.'</a>';
1.1 albertel 1056:
1057: #------------------------ Compute the Average of Tries about one problem
1.5 minaeibi 1058: my $Average = ($StdNo) ? $TotalTries/$StdNo : 0;
1.1 albertel 1059:
1.5 minaeibi 1060: $storestats{$ENV{'request.course.id'}.'___'.$urlres.'___timestamp'}=time;
1061: $storestats{$ENV{'request.course.id'}.'___'.$urlres.'___stdno'}=$StdNo;
1062: $storestats{$ENV{'request.course.id'}.'___'.$urlres.'___avetries'}=$Average;
1.1 albertel 1063:
1064: #-------------------------------- Compute percentage of Wrong tries
1.5 minaeibi 1065: my $Wrong = ( $StdNo ) ? 100 * ( $Incorrect / $StdNo ) : 0;
1.1 albertel 1066:
1067: #-------------------------------- Compute Standard Deviation
1.5 minaeibi 1068: my $StdDev = 0;
1069: if ( $StdNo > 1 ) {
1070: for ( my $n = 0; $n < $StdNo; $n++ ) {
1071: my $Dif = $StdLst[ $n ]-$Average;
1072: $StdDev += $Dif*$Dif;
1073: }
1074: $StdDev /= ( $StdNo - 1 );
1075: $StdDev = sqrt( $StdDev );
1076: }
1.1 albertel 1077:
1078: #-------------------------------- Compute Degree of Difficulty
1.5 minaeibi 1079: my $DoDiff = 0;
1080: if( $TotalTries > 0 ) {
1081: $DoDiff = 1 - ( ( $YES + $Override ) / $TotalTries );
1.1 albertel 1082: # $DoDiff = ($TotalTries)/($YES + $Override+ 0.1);
1.5 minaeibi 1083: }
1.1 albertel 1084:
1.5 minaeibi 1085: $storestats{$ENV{'request.course.id'}.'___'.$urlres.'___difficulty'}=$DoDiff;
1.1 albertel 1086:
1087: #-------------------------------- Compute the Skewness
1.5 minaeibi 1088: my $Skewness = 0;
1089: my $Sum = 0;
1090: if ( $StdNo > 0 && $StdDev > 0 ) {
1091: for ( my $n = 0; $n < $StdNo; $n++ ) {
1092: my $Dif = $StdLst[ $n ]-$Average;
1093: $Skewness += $Dif*$Dif*$Dif;
1094: }
1095: $Skewness /= $StdNo;
1.15 minaeibi 1096: $Skewness /= $StdDev*$StdDev*$StdDev;
1.5 minaeibi 1097: }
1.7 minaeibi 1098:
1099: #--------------------- Compute the Discrimination Factors
1.8 minaeibi 1100: my ($Up1,$Up2)=split(/\:/,$DisUp{$lpr[$i]});
1101: my ($Lw1,$Lw2)=split(/\:/,$DisLow{$lpr[$i]});
1102: my $Dis1 = $Up1 - $Lw1;
1103: my $Dis2 = $Up2 - $Lw2;
1104: my $_D1 = sprintf("%.2f", $Dis1);
1105: my $_D2 = sprintf("%.2f", $Dis2);
1.7 minaeibi 1106:
1.1 albertel 1107: #----------------- Some restition in presenting the float numbers
1.5 minaeibi 1108: my $Avg = sprintf( "%.2f", $Average );
1109: my $Wrng = sprintf( "%.1f", $Wrong );
1110: my $SD = sprintf( "%.1f", $StdDev );
1111: my $DoD = sprintf( "%.2f", $DoDiff );
1112: my $Sk = sprintf( "%.1f", $Skewness );
1.15 minaeibi 1113: my $join = $lpr[$i].'&'.$Temp.'&'.$StdNo.'&'.
1.12 minaeibi 1114: $TotalTries.'&'.$MxTries.'&'.$Avg.'&'.
1115: $YES.'&'.$Override.'&'.$Wrng.'&'.$DoD.'&'.
1.15 minaeibi 1116: $SD.'&'.$Sk.'&'.$_D1.'&'.$_D2.'&'.
1117: $Prob;
1.5 minaeibi 1118: $CachData{($p_count-1)}=$join;
1119:
1120: $urlres=~/^(\w+)\/(\w+)/;
1121: if ($StdNo) {
1122: &Apache::lonnet::put('resevaldata',\%storestats,$1,$2);
1123: }
1.1 albertel 1124: #-------------------------------- Row of statistical table
1.5 minaeibi 1125: if ( $DiscFlag == 0 ) {
1126: &TableRow($join,$i,($p_count-1));
1127: }
1128: }
1129: &CloseTable();
1.1 albertel 1130: }
1.15 minaeibi 1131: &Close_PrgWin();
1.1 albertel 1132: }
1133:
1134: sub Cache_Statistics {
1135: my @list = ();
1136: my $Useful;
1137: my $UnUseful;
1138: my %myHeader = reverse( %Header );
1139: $Pos = $myHeader{$ENV{'form.sort'}};
1.5 minaeibi 1140: if ($Pos > 0) {$Pos++;}
1.1 albertel 1141: $p_count = 0;
1142: foreach my $key( keys %CachData) {
1.12 minaeibi 1143: my @Temp=split(/\&/,$CachData{$key});
1.6 minaeibi 1144: if ( $Pos == 0 ) {
1.1 albertel 1145: ($UnUseful,$Useful)=split(/\>/,$Temp[$Pos]);
1146: }
1147: else {
1148: $Useful = $Temp[$Pos];
1149: }
1.12 minaeibi 1150: $list[$p_count]=$Useful.'@'.$CachData{$key};
1.1 albertel 1151: $p_count++;
1152: }
1153:
1154: @list = sort MySort (@list);
1155:
1.5 minaeibi 1156: my $nIdx=0;
1157:
1158: if ( $Pos == 0 ) {
1159: foreach (sort keys %mapsort) {
1160: my ($Hid,$pr)=split(/\:/,$mapsort{$_});
1161: &CreateTable(1,$Hid);
1162: my @lpr=split(/\&/,$pr);
1163: for (my $i=1; $i<=$#lpr; $i++) {
1.12 minaeibi 1164: my($Pre, $Post) = split(/\@/,$list[$nIdx]);
1165: #$r->print('<br>'.$Pre.'---'.$Post);
1.5 minaeibi 1166: &TableRow($Post,$i,$nIdx);
1167: $nIdx++;
1168: }
1169: &CloseTable();
1170: }
1171: }
1172: else {
1173: &CreateTable(0);
1174: for ( my $nIdx = 0; $nIdx < $p_count; $nIdx++ ) {
1.12 minaeibi 1175: my($Pre, $Post) = split(/\@/,$list[$nIdx]);
1.5 minaeibi 1176: &TableRow($Post,$nIdx,$nIdx);
1177: }
1178: &CloseTable();
1179: }
1180: }
1181:
1182: sub TableRow {
1183: my ($Str,$Idx,$RealIdx)=@_;
1.12 minaeibi 1184: my($PrOrd,$Temp,$StdNo,$TotalTries,$MxTries,$Avg,$YES,$Override,
1185: $Wrng,$DoD,$SD,$Sk,$_D1,$_D2,$Prob)=split(/\&/,$Str);
1.18 ! minaeibi 1186: if ($ENV{'form.showcsv'}) {
! 1187: my ($ResId,$Dummy)=split(/\*/,$Prob);
! 1188: my $Ptr = "\n".'<br>'.
! 1189: "\n".'"'.($RealIdx+1).'",'.
! 1190: "\n".'"'.$hash{'title_'.$ResId}.$Dummy.'",'.
! 1191: "\n".'"'.$hash{'src_'.$ResId}.'",'.
! 1192: "\n".'"'.$StdNo.'",'.
! 1193: "\n".'"'.$TotalTries.'",'.
! 1194: "\n".'"'.$MxTries.'",'.
! 1195: "\n".'"'.$Avg.'",'.
! 1196: "\n".'"'.$YES.'",'.
! 1197: "\n".'"'.$Override.'",'.
! 1198: "\n".'"'.$Wrng.'",'.
! 1199: "\n".'"'.$DoD.'",'.
! 1200: "\n".'"'.$SD.'",'.
! 1201: "\n".'"'.$Sk.'",'.
! 1202: "\n".'"'.$_D1.'",'.
! 1203: "\n".'"'.$_D2.'"';
! 1204: $r->print("\n".$Ptr);
! 1205: }
! 1206: else{
! 1207: my $Ptr = "\n".'<tr>'.
1.5 minaeibi 1208: "\n".'<td>'.($RealIdx+1).'</td>'.
1.13 minaeibi 1209: # "\n".'<td>'.$PrOrd.$Temp.'</td>'.
1.8 minaeibi 1210: "\n".'<td>'.$Temp.'</td>'.
1.7 minaeibi 1211: "\n".'<td bgcolor="#EEFFCC"> '.$StdNo.'</td>'.
1212: "\n".'<td bgcolor="#EEFFCC">'.$TotalTries.'</td>'.
1213: "\n".'<td bgcolor="#EEFFCC">'.$MxTries.'</td>'.
1.5 minaeibi 1214: "\n".'<td bgcolor="#DDFFFF">'.$Avg.'</td>'.
1215: "\n".'<td bgcolor="#DDFFFF"> '.$YES.'</td>'.
1216: "\n".'<td bgcolor="#DDFFFF"> '.$Override.'</td>'.
1217: "\n".'<td bgcolor="#FFDDDD"> '.$Wrng.'</td>'.
1218: "\n".'<td bgcolor="#FFDDDD">'.$DoD.'</td>'.
1219: "\n".'<td bgcolor="#DDFFDD"> '.$SD.'</td>'.
1220: "\n".'<td bgcolor="#DDFFDD"> '.$Sk.'</td>'.
1.8 minaeibi 1221: "\n".'<td bgcolor="#FFDDFF"> '.$_D1.'</td>'.
1.12 minaeibi 1222: "\n".'<td bgcolor="#FFDDFF"> '.$_D2.'</td>';
1.18 ! minaeibi 1223: $r->print("\n".$Ptr.'</tr>' );
! 1224: }
1.5 minaeibi 1225: $GraphDat{$RealIdx}=$DoD.':'.$Wrng;
1.1 albertel 1226: }
1227:
1228: # ------------------------------------------- Prepare data for Graphical chart
1229:
1230: sub GetGraphData {
1.17 minaeibi 1231: my $ylab = shift;
1.1 albertel 1232: my $Col;
1233: my $data='';
1234: my $count = 0;
1235: my $Max = 0;
1236: my $cid=$ENV{'request.course.id'};
1237: my $GraphDB = "/home/httpd/perl/tmp/$ENV{'user.name'}".
1238: "_$ENV{'user.domain'}_$cid\_graph.db";
1239: foreach (keys %GraphDat) {delete $GraphDat{$_};}
1240: if (-e "$GraphDB") {
1241: if (tie(%GraphDat,'GDBM_File',"$GraphDB",&GDBM_READER,0640)) {
1.17 minaeibi 1242: if ( $ylab eq 'DoDiff Graph' ) {
1243: $ylab = 'Degree-of-Difficulty';
1.1 albertel 1244: $Col = 0;
1245: }
1246: else {
1.17 minaeibi 1247: $ylab = 'Wrong-Percentage';
1.1 albertel 1248: $Col = 1;
1249: }
1250: foreach (sort NumericSort keys %GraphDat) {
1251: my @Temp=split(/\:/,$GraphDat{$_});
1252: my $inf = $Temp[$Col];
1253: if ( $Max < $inf ) {$Max = $inf;}
1254: $data .= $inf.',';
1255: $count++;
1256: }
1.15 minaeibi 1257: if ( $Max > 1 ) {
1258: $Max += (10 - $Max % 10);
1259: $Max = int($Max);
1260: }
1261: else { $Max = 1; }
1.1 albertel 1262: untie(%GraphDat);
1263: my $Course = $ENV{'course.'.$cid.'.description'};
1264: $Course =~ s/\ /"_"/eg;
1.17 minaeibi 1265: $GData=$Course.'&'.'Problems'.'&'.$ylab.'&'.$Max.'&'.$count.'&'.$data;
1.1 albertel 1266: }
1267: else {
1268: $r->print("Unable to tie hash to db file");
1269: }
1270: }
1271: }
1272:
1273:
1274: sub initial {
1275: # --------------------------------- Initialize the global varaibles
1276: undef @students;
1277: undef @cols;
1278: undef %maps;
1279: undef %section;
1280: undef %StuBox;
1281: undef @list;
1282: undef %CachData;
1283: undef %GraphDat;
1284: undef %DiscFac;
1.12 minaeibi 1285: undef %OpResp;
1.15 minaeibi 1286: undef %ConceptData;
1.1 albertel 1287: undef $CurMap;
1288: undef $CurSec;
1289: undef $CurStu;
1290: undef $p_count;
1291: undef $Pos;
1292: undef $GData;
1.5 minaeibi 1293: $DiscFlag=0;
1294: $P_Order=100000;
1295: $HWN=$P_Order;
1.1 albertel 1296: }
1297:
1298:
1299: sub ClassList {
1300:
1301: &GetStatus();
1302:
1303: $cid=$ENV{'request.course.id'};
1304: my $chome=$ENV{'course.'.$cid.'.home'};
1305: my ($cdom,$cnum)=split(/\_/,$cid);
1306: # ----------------------- Get first and last resource, see if there is anything
1307: $firstres=$hash{'map_start_/res/'.$ENV{'request.course.uri'}};
1308: $lastres=$hash{'map_finish_/res/'.$ENV{'request.course.uri'}};
1309: if (($firstres) && ($lastres)) {
1.18 ! minaeibi 1310: #my %result = &Apache::lonnet::dump('classlist',$sdom,$sname);
! 1311: my $classlst=&Apache::lonnet::reply('dump:'.$cdom.':'.$cnum.':classlist',$chome);
1.1 albertel 1312: my $StudNo = 0;
1.6 minaeibi 1313: my $now=time;
1.1 albertel 1314: unless ($classlst=~/^error\:/) {
1315: foreach (sort split(/\&/,$classlst)) {
1316: my ($name,$value)=split(/\=/,$_);
1317: my ($end,$start)=split(/\:/,&Apache::lonnet::unescape($value));
1318: $name=&Apache::lonnet::unescape($name);
1319: my ($sname,$sdom)=split(/\:/,$name);
1.6 minaeibi 1320: my $active=1;
1321: my $Status=$ENV{'form.status'};
1322: $Status = ($Status) ? $Status : 'Active';
1323: if ( ( ($end) && $now > $end ) &&
1324: ( ($Status eq 'Active') ) ) { $active=0; }
1325: if ( ($Status eq 'Expired') &&
1326: ($end == 0 || $now < $end) ) { $active=0; }
1327: if ($active) {
1328: my $thisindex=$#students+1;
1329: $name=&Apache::lonnet::unescape($name);
1330: $students[$thisindex]=$name;
1331: my ($sname,$sdom)=split(/\:/,$name);
1332: #my %reply=&Apache::lonnet::idrget($sdom,$sname);
1333: #my $reply=&Apache::lonnet::reply('get:'.$sdom.':'.$sname.
1334: # ':environment:lastname&generation&firstname&middlename',
1335: # &Apache::lonnet::homeserver($sname,$sdom));
1336: my $ssec=&usection($sdom,$sname,$cid,$Status);
1.15 minaeibi 1337: # if ($ssec==-1 ) {next;}
1338: if ($ssec==-1 || $ssec eq 'adm' ) {next;}
1.6 minaeibi 1339: $ssec=($ssec) ? $ssec : '(none)';
1340: #$ssec=(int($ssec)) ? int($ssec) : $ssec;
1341: $section{$ssec}=$ssec;
1342: if ($CurSec eq 'All Sections' || $ssec eq $CurSec) {
1343: $students[$StudNo]=$name;
1.7 minaeibi 1344: $StuBox{$sname}=$sdom;
1.6 minaeibi 1345: }
1346: $StudNo++;
1347: }
1.1 albertel 1348: }
1349: }
1350: else {
1351: $r->print('<h1>Could not access course data</h1>');
1.2 minaeibi 1352: }
1.1 albertel 1353: $r->print("Total number of students : ".($#students+1));
1354: $r->rflush();
1355: # --------------- Find all assessments and put them into some linear-like order
1356: &tracetable($firstres,'&'.$lastres.'&');
1.5 minaeibi 1357: # my $c=0;
1358: # foreach (sort keys %mapsort) {
1359: # $r->print('<br>'.$c.')'.$_.' ... '.$mapsort{$_});
1360: # $c++;
1361: # }
1.15 minaeibi 1362: # my $c=1;
1363: # foreach (sort keys %OpResp) {
1364: # $r->print('<br>'.$c.')'.$_.' ... '.$OpResp{$_}.' ... '.$hash{'src_'.$OpResp{$_}});
1365: # $c++;
1366: # }
1367:
1.1 albertel 1368: }
1369:
1370: # ------------------------------------------------------------- End render page
1371: else {
1372: $r->print('<h3>Undefined course sequence</h3>');
1373: }
1.15 minaeibi 1374: }
1375:
1376:
1377: sub Title {
1378: $r->print('<html><head><title>LON-CAPA Statistics</title></head>');
1379: $r->print('<body bgcolor="#FFFFFF">'.
1380: '<script>window.focus(); window.width=500;window.height=500;</script>'.
1381: '<img align=right src=/adm/lonIcons/lonlogos.gif>');
1382: # ---------------------------------------------------------------- Course title
1383: $r->print('<h1> Course : "'.
1384: $ENV{'course.'.$ENV{'request.course.id'}.
1385: '.description'}.'"</h1><h2>'.localtime().'</h2>');
1386: # ------------------------------- This is going to take a while, produce output
1387: $r->rflush();
1388: }
1389:
1390: sub CreateForm {
1391: $r->print("\n".'<form name=stat method=post action="/adm/statistics" >');
1392: my $content = $ENV{'form.sort'};
1.18 ! minaeibi 1393: if (!($ENV{'form.showcsv'}) && ($content eq '' || $content eq 'Return to Menu')) {
1.15 minaeibi 1394: my $Ptr = '<h3>';
1395: $Ptr .= '<input type=submit name=sort value="Problem Stats"/>';
1396: $Ptr .= '<br><br>';
1397: $Ptr .= '<input type=submit name=sort value="Problem Analysis"/>';
1398: $Ptr .= '<br><br>';
1399: $Ptr .= '<input type=submit name=sort value="Student Assessment"/>';
1400: $Ptr .= '</h3>';
1401: $r->print( $Ptr );
1402: }
1403: else {
1404: if ( $content eq 'Student Assessment' ||
1405: $content eq 'Create Student Report' ) {
1406: &MapSecOptions();
1407: &StudentOptions();
1408: &StudentReport($CurStu,$StuBox{"$CurStu"});
1409: }
1410: elsif ( $content eq 'Problem Analysis' ) {
1411: &AnalyzeProblem();
1412: }
1413: else {
1414: &MapSecOptions();
1415: &PreStatTable();
1416: }
1417: }
1.1 albertel 1418: }
1419:
1420:
1421: sub Menu {
1.15 minaeibi 1422: &initial();
1.18 ! minaeibi 1423: #$Apache::lonxml::debug=1;
! 1424: #&Apache::lonhomework::showhash(%ENV);
! 1425: #$Apache::lonxml::debug=0;
1.15 minaeibi 1426: &Title();
1427: &ClassList();
1.1 albertel 1428: my $InpStr = $ENV{'form.sort'};
1.15 minaeibi 1429: if ($InpStr=~/^Analyze\_/) {
1430: &ShowOpGraph($InpStr,$ENV{'form.interval'});
1431: }
1432: elsif ( $InpStr eq 'DoDiff Graph' || $InpStr eq '%Wrong Graph' ) {
1.1 albertel 1433: &GetGraphData($InpStr);
1434: $r->print('<IMG src="/cgi-bin/graph.gif?'.$GData.'" />');
1435: }
1436: else {
1.15 minaeibi 1437: &CreateForm();
1438: $r->print("\n".'</form>');
1.1 albertel 1439: }
1.15 minaeibi 1440: $r->print("\n".'</body>'.
1441: "\n".'</html>');
1442: $r->rflush();
1.1 albertel 1443: }
1444:
1445: sub StudentOptions {
1446: my $OpSel5='';
1447: $CurStu = $ENV{'form.student'};
1448: if ( $CurStu eq '' ) {
1449: $CurStu = 'All Students';
1450: $OpSel5 = 'selected';
1451: }
1452: my $Ptr ='';
1453: # ----------------------------------- Loading the Students Combobox
1454: $Ptr .= '<br><b>Select Student</b>'."\n".
1455: '<select name="student">'."\n".
1456: '<option '.$OpSel5.'>All Students</option>';
1457: foreach my $key ( sort keys %StuBox ) {
1458: $Ptr .= '<option';
1459: if ($CurStu eq $key) {$Ptr .= ' selected';}
1460: $Ptr .= '>'.$key."</option>\n";
1461: }
1462: $Ptr .= '</select>';
1463: $Ptr .= '<br><input type="submit" name="sort" value="Create Student Report" />';
1464: $r->print( $Ptr );
1465: $r->rflush();
1466: }
1467:
1.15 minaeibi 1468:
1.1 albertel 1469: sub GetStatus {
1470: $OpSel1='';
1471: $OpSel2='';
1472: $OpSel3='';
1473: $OpSel4='';
1474:
1475: if ( $ENV{'form.order'} eq 'Descending' ) { $OpSel2='selected'; }
1476: else { $OpSel1 = 'selected'; }
1.5 minaeibi 1477:
1478: my %myHeader = reverse( %Header );
1479: $Pos = $myHeader{$ENV{'form.sort'}};
1480: if ($Pos == 0) {
1481: $OpSel1 = 'selected';
1482: $ENV{'form.order'}='Ascendig';
1483: }
1484:
1.1 albertel 1485: $CurMap = $ENV{'form.maps'};
1486: if ( $CurMap eq '' ) {
1487: $CurMap = 'All Maps';
1488: $OpSel3 = 'selected';
1489: }
1490: $CurSec = $ENV{'form.section'};
1491: if ( $CurSec eq '' ) {
1492: $CurSec = 'All Sections';
1493: $OpSel4 = 'selected';
1494: }
1495: }
1496:
1497:
1498: sub MapSecOptions {
1499: # ----------------------------------- Loading the Maps Combobox
1.18 ! minaeibi 1500: my $Ptr = '';
! 1501: $Ptr .= '<input type="submit" name="sort" value="Return to Menu" />';
1.1 albertel 1502: $Ptr .= '<br><b> Select Map </b>'."\n".
1503: '<select name="maps">'."\n".
1504: '<option '.$OpSel3.'>All Maps</option>';
1505: foreach my $key ( sort keys %maps ) {
1506: $Ptr .= '<option';
1507: if ($CurMap eq $key) {$Ptr .= ' selected';}
1508: $Ptr .= '>'.$key."</option>\n";
1509: }
1510: $Ptr .= '</select>';
1511: $Ptr .= ' ';
1512:
1513: # ----------------------------------- Loading the Sections Combobox
1514: $Ptr .= '<br><b>Select Section</b>'."\n".
1515: '<select name="section">'."\n".
1516: '<option '.$OpSel4.'>All Sections</option>';
1517: foreach my $key ( sort keys %section ) {
1518: $Ptr .= '<option';
1519: if ($CurSec eq $key) {$Ptr .= ' selected';}
1520: $Ptr .= '>'.$key."</option>"."\n";
1521: }
1522: $Ptr .= '</select>'."\n";
1523:
1524: $r->print( $Ptr );
1525: $r->rflush();
1526: }
1527:
1528:
1529: # ================================================================ Main Handler
1530:
1531: sub handler {
1532: $r=shift;
1533:
1534: if (&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'})) {
1535: # ------------------------------------------- Set document type for header only
1536: if ($r->header_only) {
1537: if ($ENV{'browser.mathml'}) {
1538: $r->content_type('text/xml');
1539: }
1540: else {
1541: $r->content_type('text/html');
1542: }
1543: $r->send_http_header;
1544: return OK;
1545: }
1546: my $requrl=$r->uri;
1547: # ----------------------------------------------------------------- Tie db file
1548:
1549: undef %hash;
1550:
1551: if ($ENV{'request.course.fn'}) {
1552: my $fn=$ENV{'request.course.fn'};
1553: if (-e "$fn.db") {
1554: if (tie(%hash,'GDBM_File',"$fn.db",&GDBM_READER,0640)) {
1555: # ------------------------------------------------------------------- Hash tied
1556: $r->content_type('text/html');
1557: $r->send_http_header;
1558: &Menu();
1559: }
1560: else {
1561: $r->content_type('text/html');
1562: $r->send_http_header;
1563: $r->print('<html><body>Coursemap undefined.</body></html>');
1564: }
1565: # ------------------------------------------------------------------ Untie hash
1566: unless (untie(%hash)) {
1567: &Apache::lonnet::logthis("<font color=blue>WARNING: ".
1568: "Could not untie coursemap $fn (browse).</font>");
1569: }
1570:
1571: # -------------------------------------------------------------------- All done
1572: return OK;
1573: # ----------------------------------------------- Errors, hash could no be tied
1574: }
1575: }
1576: else {
1577: $ENV{'user.error.msg'}="$requrl:bre:0:0:Course not initialized";
1578: return HTTP_NOT_ACCEPTABLE;
1579: }
1580: }
1581: else {
1582: $ENV{'user.error.msg'}=
1583: $r->uri.":vgr:0:0:Cannot view grades for complete course";
1584:
1585: return HTTP_NOT_ACCEPTABLE;
1586: }
1587: }
1588: 1;
1589: __END__
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