Annotation of loncom/interface/lonstatistics.pm, revision 1.17
1.1 albertel 1: # The LearningOnline Network with CAPA
2: # (Publication Handler
3: #
1.17 ! minaeibi 4: # $Id: lonstatistics.pm,v 1.16 2002/05/13 15:01:54 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
1.15 minaeibi 33: # 1/22,2/1,2/6,2/25,3/2,3/6,3/17,3/21,3/22,3/26,4/7,5/6,5/12 Behrouz Minaei
1.14 minaeibi 34: #
1.1 albertel 35: ###
36:
1.3 minaeibi 37: package Apache::lonstatistics;
1.1 albertel 38:
1.15 minaeibi 39: use strict;
1.1 albertel 40: use Apache::Constants qw(:common :http);
41: use Apache::lonnet();
42: use Apache::lonhomework;
1.12 minaeibi 43: use Apache::loncommon;
1.1 albertel 44: use HTML::TokeParser;
45: use GDBM_File;
46:
47: # -------------------------------------------------------------- Module Globals
48: my %hash;
49: my %CachData;
50: my %GraphDat;
1.12 minaeibi 51: my %OpResp;
1.1 albertel 52: my %maps;
1.5 minaeibi 53: my %mapsort;
1.1 albertel 54: my %section;
55: my %StuBox;
56: my %DiscFac;
1.7 minaeibi 57: my %DisUp;
58: my %DisLow;
59: my $UpCnt;
1.1 albertel 60: my $CurMap;
61: my $CurSec;
62: my $CurStu;
63: my @cols;
64: my @list;
65: my @students;
66: my $p_count;
67: my $Pos;
68: my $r;
69: my $OpSel1;
70: my $OpSel2;
71: my $OpSel3;
72: my $OpSel4;
73: my $GData;
74: my $cid;
75: my $firstres;
76: my $lastres;
1.5 minaeibi 77: my $DiscFlag;
78: my $HWN;
79: my $P_Order;
1.15 minaeibi 80: my %foil_to_concept;
81: my @Concepts;
82: my %ConceptData;
1.6 minaeibi 83: my %Header = (0,"Homework Sets Order",1,"#Stdnts",2,"Tries",3,"Mod",
1.5 minaeibi 84: 4,"Mean",5,"#YES",6,"#yes",7,"%Wrng",8,"DoDiff",
1.15 minaeibi 85: 9,"S.D.",10,"Skew.",11,"D.F.1st",12,"D.F.2nd");
86: my @shown;
87:
88: sub InitAnalysis {
89: my ($rid, $student)=@_;
90: my ($uname,$udom)=split(/\:/,$student);
91: $rid=~/(\d+)\.(\d+)/;
92: my $symb=&Apache::lonnet::declutter($hash{'map_id_'.$1}).'___'.$2.'___'.
93: &Apache::lonnet::declutter($hash{'src_'.$rid});
94: my $URI = $hash{'src_'.$rid};
95: my $Answ=&Apache::lonnet::ssi($URI,('grade_target' => 'analyze',
96: 'grade_username' => $uname,
97: 'grade_domain' => $udom,
98: 'grade_courseid' => $cid,
99: 'grade_symb' => $symb));
100: # my $Answ=&Apache::lonnet::ssi($URI,('grade_target' => 'analyze'));
101:
102: (my $garbage,$Answ)=split(/_HASH_REF__/,$Answ,2);
1.17 ! minaeibi 103: my %Answer=();
1.15 minaeibi 104: %Answer=&Apache::lonnet::str2hash($Answ);
105:
106: my $parts='';
107: foreach my $elm (@{$Answer{"parts"}}) {
108: $parts.="$elm,";
109: }
110: chop($parts);
111: my $conc='';
112: foreach my $elm (@{$Answer{"$parts.concepts"}}) {
113: $conc.="$elm@";
114: }
115: chop($conc);
116:
117: @Concepts=split(/\@/,$conc);
118: my $show='';
119: foreach my $elm (@{$Answer{"$parts.shown"}}) {
120: $show.="$elm@";
121: }
122: chop($show);
123: @shown=split(/\@/,$show);
1.17 ! minaeibi 124: # $r->print("<br> shown:".$show);# $r->rflush();
1.15 minaeibi 125: foreach my $concept (@{$Answer{"$parts.concepts"}}) {
126: foreach my $foil (@{$Answer{"$parts.concept.$concept"}}) {
127: $foil_to_concept{$foil} = $concept;
1.17 ! minaeibi 128: $ConceptData{$foil} = $Answer{"$parts.foil.value.$foil"};
1.15 minaeibi 129: }
130: }
131: return $symb;
132: }
133:
134:
135: sub Interval {
1.16 minaeibi 136: my ($rid,$part,$symb)=@_;
1.15 minaeibi 137: my $Int=$ConceptData{"Interval"};
1.16 minaeibi 138: my $due = &Apache::lonnet::EXT('resource.$part.duedate',$symb)+1;
139: my $opn = &Apache::lonnet::EXT('resource.$part.opendate',$symb);
1.15 minaeibi 140: my $add=int(($due-$opn)/$Int);
1.17 ! minaeibi 141: #$r->print("<br> $opn, to $due add=$add int=$Int");#$r->rflush();
1.15 minaeibi 142: $ConceptData{"Int.0"}=$opn;
143: for (my $i=1;$i<$Int;$i++) {
144: $ConceptData{"Int.$i"}=$opn+$i*$add;
145: }
146: $ConceptData{"Int.$Int"}=$due;
147: for (my $i=0;$i<$Int;$i++) {
148: for (my $n=0; $n<=$#Concepts; $n++ ) {
149: my $tmp=$Concepts[$n];
150: $ConceptData{"$tmp.$i.true"}=0;
151: $ConceptData{"$tmp.$i.false"}=0;
152: }
153: }
154: }
155:
156:
157: sub ShowOpGraph {
158:
159: my ($InpStr, $Int_No)=@_;
160:
161: $r->print(<<ENDPOP);
162: <script language="JavaScript">
163:
164: function display(name) {
165: document.forms.displayform.elements.dis.value=name;
166: window.status=name;
167: }
168: function cleardisplay() {
169: document.forms.displayform.elements.dis.value='';
170: window.status='No Concept in particular';
171: }
172:
173: </script>
174: ENDPOP
175:
1.16 minaeibi 176: my ($rid,$part)=split(/\:/,substr($InpStr,8));
1.15 minaeibi 177: $ConceptData{"Interval"}=$Int_No;
1.16 minaeibi 178: my $symb=&InitAnalysis($rid,$students[0]);
179: &Interval($rid,$part,$symb);
1.15 minaeibi 180: my $URI = $hash{'src_'.$rid};
181: my $Src = $hash{'title_'.$rid};
182: $Src =~ s/\ /"_"/eg;
183: $r->print('<br><b>'.$URI.'</b>');
184: for (my $n=1; $n<=$#Concepts+1; $n++ ) {
185: my $tmp=$Concepts[$n-1];
186: $tmp =~ s/</" less than "/eg;
187: $r->print("<br><b>Concept $n</b>:$tmp");
188: }
189: $r->rflush();
190:
1.16 minaeibi 191: &Create_PrgWin();
192: &Update_PrgWin("Starting to analyze problem");
1.15 minaeibi 193: for (my $index=0;$index<=$#students;$index++) {
194: &Update_PrgWin($index);
195: &OpStatus($rid,$students[$index]);
196: }
197: &Close_PrgWin();
198:
199: for (my $k=0; $k<$Int_No; $k++ ) {
200: my $data1='';
201: my $data2='';
202: &DrawGraph(&AdjustData($k).'+'.$Src.'+'.($k+1));
203: }
1.17 ! minaeibi 204: #$Apache::lonxml::debug=1;
! 205: #&Apache::lonhomework::showhash(%ConceptData);
! 206: #$Apache::lonxml::debug=0;
1.15 minaeibi 207: my $Answ=&Apache::lonnet::ssi($URI);
208: $r->print("<br><b>Here you can see the Problem:</b><br>$Answ");
209: }
210:
211: sub AdjustData {
212: my $k=shift;
213: my $Max=0;
214: my @data1;
215: my @data2;
216: for (my $n=0; $n<=$#Concepts; $n++ ) {
217: my $tmp=$Concepts[$n];
218: $data1[$n]=$ConceptData{"$tmp.$k.true"};
219: $data2[$n]=$ConceptData{"$tmp.$k.false"};
220: my $Sum=$data1[$n]+$data2[$n];
221: if ( $Max<$Sum ) {$Max=$Sum;}
1.17 ! minaeibi 222: $ConceptData{"$tmp.true"}+=$data1[$n];
! 223: $ConceptData{"$tmp.false"}+=$data2[$n];
1.15 minaeibi 224: }
225: for (my $n=0; $n<=$#Concepts; $n++ ) {
226: if ($data1[$n]+$data2[$n]<$Max) {
227: $data2[$n]+=$Max-($data1[$n]+$data2[$n]);
228: }
229: }
230: return join(',',@data1).'+'.
231: join(',',@data2).'+'.
232: $Max.'+'.($#data1+1);
233: }
234:
235:
236: sub DrawGraph {
237: my $data=shift;
238: my($data1,$data2,$Max,$P_No,$Src,$k)=split(/\+/,$data);
239:
240: my $Str="\n".'<table border=1>'.
241: "\n".'<tr>'.
242: "\n".'<th> Correct Answers </th>'.
243: "\n".'<th> Wrong Answers </th>'.
244: "\n".'<th> From </th>'.
245: "\n".'<th> To </th>'.
246: "\n".'</tr>'.
247: "\n"."<tr>".
248: "\n"."<td> $data1 </td>".
249: "\n"."<td> $data2 </td>".
250: "\n"."<td> ".localtime($ConceptData{'Int.'.($k-1)})." </td>".
251: "\n"."<td> ".localtime($ConceptData{'Int.'.$k}-1)." </td>".
252: "\n"."</tr></table>";
253: $r->print($Str);
254: # $r->print('<br><b>Correct Answers:</b> '.$data1.
255: # '<br><b>Wrong Answers: </b>'.$data2);
256: # $r->print('<br><b>From: </b>'.localtime($ConceptData{'Int.'.($k-1)}).
257: # '<br><b>To: </b>'.localtime($ConceptData{"Int.$k"}));
258:
259: # if ( $Max > 1 ) {
260: # $Max += (10 - $Max % 10);
261: # $Max = int($Max);
262: # }
263: # else { $Max = 1; }
264: my $Titr=($ConceptData{'Interval'}>1) ? $Src.'_interval_'.$k : $Src;
1.17 ! minaeibi 265: $GData=$Titr.'&'.'Concepts'.'&'.'Answers'.'&'.$Max.'&'.$P_No.'&'.$data1.'&'.$data2;
1.15 minaeibi 266: if($ConceptData{'Interval'}>1){
267: $r->print('<br><IMG src="/cgi-bin/graph.gif?'.$GData.'" />');
268: return;
269: }
270: $r->print('<br>Move your mouse over a bar to find out the concept');
271: my $ptr='';
272: $ptr.="\n".'<form method="post" action="" name="displayform"> <input type=text name="dis" size=80> </form>';
273: $ptr.="\n".'<p><img src=/cgi-bin/graph.gif?'.$GData.
274: ' usemap="#Map" border=1>'.
275: "\n".'<map name="Map">';
276: my $gap=12;
277: my $Size=340;
278: my $barsize=($P_No) ? int($Size/$P_No) : 1;
279: for (my $i=0; $i<$P_No; $i++) {
280: my $x1=80+$gap*$i+($i*$barsize);
281: my $x2=$x1+$barsize;
282: my $y1=25;
283: my $y2=350;
284: my $j=$i+1;
285: $ptr.="\n".'<area shape="rect" coords='.$x1.','.$y1.','.$x2.','.$y2.' onMouseOver="display('."'Concept $j: $Concepts[$i]'".'); " href="javascript:alert('."'Concept $j: $Concepts[$i]'".');">';
286: }
287: $ptr.="\n".'<area shape="default" onMouseOver="cleardisplay(); " href="javascript:alert('.'No Concept in particular'.');">';
288: $ptr.="\n".'</map></p>';
289: $r->print('<br>'.$ptr.'<br>');
290: }
291:
292:
293: sub AnalyzeProblem {
294: # -------------------------------- Selecting the number of intervals
295: my $OpSel='';
296: my $CurInt = $ENV{'form.interval'};
297: if ($CurInt eq '') {$CurMap = '1';}
298: my $Ptr = '<b>Select number of intervals</b>'."\n".
299: '<select name="interval">'."\n";
300: for (my $n=1;$n<=7;$n++) {
301: $Ptr .= '<option';
302: if ($CurInt eq $n) {$Ptr .= ' selected';}
303: $Ptr .= '>'.$n."</option>"."\n";
304: }
305: $Ptr .= '</select>'."\n";
306: $r->print( $Ptr );
307:
308: $r->print('<br><b> Option Response Problems in this course:</b><br><br>');
309: my $Str = "\n".'<table border=2>'.
310: "\n".'<tr>'.
311: "\n".'<th> # </th>'.
312: "\n".'<th> Problem Title </th>'.
313: "\n".'<th> Resouse </th>'.
314: "\n".'<th> Address </th>'.
315: "\n".'</tr>';
316:
317: my $P_No=1;
318: foreach (sort keys %OpResp) {
1.16 minaeibi 319: my ($rid,$part)=split(/\:/,$OpResp{$_});
320: my $Temp = '<a href="'.$hash{'src_'.$rid}.
321: '" target="_blank">'.$hash{'title_'.$rid}.'</a>';
1.15 minaeibi 322: $Str .= "\n"."<tr>".
323: "\n"."<td> $P_No </td>".
324: "\n"."<td bgcolor=#DDFFDD> ".$Temp." </td>".
1.16 minaeibi 325: "\n"."<td bgcolor=#EEFFCC> ".$hash{'src_'.$rid}." </td>".
326: "\n"."<td> ".'<input type="submit" name="sort" value="'.'Analyze_'.$rid.'" />'.'</td>'.
1.15 minaeibi 327: "\n"."</tr>";
328: $P_No++;
329: }
330: $Str .= "\n".'</table>';
331: $Str .= "\n".'</form>';
332: $r->print($Str);
333: $r->rflush();
334: }
335:
336:
337: sub Decide {
338: my ($type,$foil,$time)=@_;
339: my $k=0;
340: while ($time>$ConceptData{'Int.'.($k+1)} &&
341: $k<$ConceptData{'Interval'}) {$k++;}
342: $ConceptData{"$foil_to_concept{$foil}.$k.$type"}++;
343: }
344:
345:
346: sub OpStatus {
347: my ($rid,$student)=@_;
348: my ($uname,$udom)=split(/\:/,$student);
349: my $code='U';
350: $rid=~/(\d+)\.(\d+)/;
351: my $symb=&Apache::lonnet::declutter($hash{'map_id_'.$1}).'___'.$2.'___'.
352: &Apache::lonnet::declutter($hash{'src_'.$rid});
353: my %reshash=&Apache::lonnet::restore($symb,$cid,$udom,$uname);
354: my @True = ();
355: my @False = ();
356: my $flag=0;
357: @shown=();
358: if ($reshash{'version'}) {
359: for (my $version=1;$version<=$reshash{'version'};$version++) {
360: my $time=$reshash{"$version:timestamp"};
361: foreach (sort(split(/\:/,$reshash{$version.':keys'}))) {
362: if (($_=~/\.(\w+)\.(\w+)\.submission$/)) {
1.17 ! minaeibi 363: #my $Id1=$1; my $Id2=$2;
1.15 minaeibi 364: my $Resp = $reshash{$_};
365: my %submission=&Apache::lonnet::str2hash($Resp);
366: foreach (keys %submission) {
1.17 ! minaeibi 367: my $Ansr = $ConceptData{"$_"};
! 368: #my $Ansr = $Answer{"$Id1.$Id2.foil.value.$_"};
1.15 minaeibi 369: #$r->print("<br>shown: ".join(',',@shown)." size=$#shown");
370: if ($submission{$_}) {
371: #if($#shown==-1){
372: #my @str=split(/\&/,$Resp);
373: #my $garb;
374: #for(my $j=0;$j<=$#str;$j++){
375: # ($shown[$j],$garb)=split(/\=/,$str[$j]);
376: #}
377: ##$r->print("<br>shown: ".join(',',@shown)." size=$#shown");
378: #}
379: if ($submission{$_} eq $Ansr) {
380: &Decide("true",$_,$time );
381: }
382: else {&Decide("false",$_,$time );}
383: }
384: #else {
385: # if ($#shown==-1 && $flag==0) {
386: # $flag++;
387: # &InitAnalysis($rid,$student);
388: # }
389: # my @erl=split(/\:/,$_);
390: # for (my $i=0;$i<=$#shown; $i++){
391: # my $Ans=$Answer{"$Id1.$Id2.foil.value.$shown[$i]"};
392: # if ($erl[$i] eq $Ans) {
393: # &Decide("true",$shown[$i],$time);
394: # }
395: # else {&Decide("false",$shown[$i],$time);}
396: # }
397: #}
398: }
399: }
400: }
401: }
402: }
403: }
1.11 minaeibi 404:
405:
1.7 minaeibi 406: #------- Processing upperlist and lowerlist according to each problem
407: sub ProcessDisc {
408: my @List = @_;
409: @List = sort (@List);
410: my $Count = $#List+1;
411: my $Prb;
412: my @Dis;
413: my $Slvd=0;
414: my $tmp;
1.8 minaeibi 415: my $Sum1=0;
416: my $Sum2=0;
1.7 minaeibi 417: my $nIdx=0;
418: my $nStud=0;
419: my %Proc;
420: undef %Proc;
421: while ($nIdx<$Count) {
422: ($Prb,$tmp)=split(/\=/,$List[$nIdx]);
423: @Dis=split(/\+/,$tmp);
424: my $Temp = $Prb;
425: do {
426: $nIdx++;
427: $nStud++;
1.8 minaeibi 428: $Sum1 += $Dis[0];
429: $Sum2 += $Dis[1];
1.7 minaeibi 430: ($Prb,$tmp)=split(/\=/,$List[$nIdx]);
431: @Dis=split(/\+/,$tmp);
432: } while ( $Prb eq $Temp && $nIdx < $Count );
1.8 minaeibi 433: # $Proc{$Temp}=($Sum1/$nStud).':'.$nStud;
434: $Proc{$Temp}=($Sum1/$nStud).':'.($Sum2/$nStud);
1.15 minaeibi 435: # $r->print("$nIdx) $Temp --> ($nStud) $Proc{$Temp} <br>");
1.8 minaeibi 436: $Sum1=0;
437: $Sum2=0;
1.7 minaeibi 438: $nStud=0;
439: }
440: return %Proc;
441: }
442:
443:
444: #------- Creating Discimination factor
445: sub Discriminant {
446: my $Count=0;
447: foreach (keys(%DiscFac)){
448: $Count++;
449: }
450: $UpCnt = int(0.27*$Count);
451: my $low=0;
452: my $up=$Count-$UpCnt;
453: my @UpList=();
454: my @LowList=();
455: $Count=0;
456: foreach my $key (sort(keys(%DiscFac))){
457: $Count++;
458: #$r->print("<br>$Count) $key = $DiscFac{$key}");
459: if ($low < $UpCnt || $Count > $up) {
460: $low++;
461: my $str=$DiscFac{$key};
462: foreach(split(/\:/,$str)){
463: if ($_) {
464: if ($low<$UpCnt){push(@LowList,$_);}
465: else {push(@UpList,$_);}
466: }
467: }
468: }
469: }
470: %DisUp=&ProcessDisc(@UpList);
471: %DisLow=&ProcessDisc(@LowList);
472: }
473:
474:
1.1 albertel 475: sub NumericSort {
476: $a <=> $b;
477: }
478:
479: # ------ Create different Student Report
480: sub StudentReport {
481: my ($sname,$sdom)=@_;
482: if ( $sname eq 'All Students' ) {
483: $r->print( '<h3><font color=blue>WARNING:
484: Please select a student</font></h3>' );
485: return;
486: }
1.14 minaeibi 487: my %result = &Apache::lonnet::dump($cid,$sdom,$sname);
1.1 albertel 488: my $ResId;
1.5 minaeibi 489: my $PrOrd;
1.1 albertel 490: my $Code;
491: my $Tries;
492: my $TotalTries = 0;
493: my $ParCr = 0;
494: my $Wrongs;
495: my %TempHash;
496: my $Version;
497: my $LatestVersion;
498: my $PtrTry='';
499: my $PtrCod='';
500: my $SetNo=0;
501: my $Str = "\n".'<table border=2>'.
502: "\n".'<tr>'.
503: "\n".'<th> # </th>'.
504: "\n".'<th> Set Title </th>'.
505: "\n".'<th> Results </th>'.
506: "\n".'<th> Tries </th>'.
507: "\n".'</tr>';
1.14 minaeibi 508: my ($temp)=keys(%result);
509: unless ($temp=~/^error\:/) {
1.5 minaeibi 510: foreach my $CurCol (@cols) {
511: if (!$CurCol){
1.1 albertel 512: my $Set=&Apache::lonnet::declutter($hash{'map_id_'.$1});
513: if ( $Set ) {
514: $SetNo++;
515: $Str .= "\n"."<tr>".
516: "\n"."<td> $SetNo </td>".
517: "\n"."<td> $Set </td>".
518: "\n"."<td> $PtrCod </td>".
519: "\n"."<td> $PtrTry</td>".
520: "\n"."</tr>";
521: }
522: $PtrTry='';
523: $PtrCod='';
524: next;
525: }
1.5 minaeibi 526: ($PrOrd,$ResId)=split(/\:/,$CurCol);
1.1 albertel 527: $ResId=~/(\d+)\.(\d+)/;
528: my $Map = &Apache::lonnet::declutter( $hash{'map_id_'.$1} );
529: if ( $CurMap ne 'All Maps' ) {
530: my ( $ResMap, $NameMap ) = split(/\=/,$CurMap);
531: if ( $Map ne $ResMap ) { next; }
532: }
533: my $meta=$hash{'src_'.$ResId};
534: my $PartNo = 0;
535: undef %TempHash;
1.5 minaeibi 536: foreach (split(/\,/,&Apache::lonnet::metadata($meta,'keys'))){
1.12 minaeibi 537: if ($_=~/^stores\_(\w+)\_tries$/) {
1.1 albertel 538: my $Part=&Apache::lonnet::metadata($meta,$_.'.part');
539: if ( $TempHash{"$Part"} eq '' ) {
540: $TempHash{"$Part"} = $Part;
541: $TempHash{$PartNo}=$Part;
542: $TempHash{"$Part.Code"} = '-';
1.5 minaeibi 543: $TempHash{"$Part.PrOrd"} = $PrOrd+$PartNo;
1.1 albertel 544: $PartNo++;
545: }
546: }
1.5 minaeibi 547: }
1.1 albertel 548:
549: my $Prob = $Map.'___'.$2.'___'.
550: &Apache::lonnet::declutter( $hash{'src_'.$ResId} );
551: $Code='U';
552: $Tries = 0;
553: $Wrongs = 0;
1.7 minaeibi 554: $LatestVersion = $result{"version:$Prob"};
1.1 albertel 555: if ( $LatestVersion ) {
556: for ( my $Version=1; $Version<=$LatestVersion; $Version++ ) {
557: my $vkeys = $result{"$Version:keys:$Prob"};
558: my @keys = split(/\:/,$vkeys);
559:
560: foreach my $Key (@keys) {
561: if (($Key=~/\.(\w+)\.solved$/) && ($Key!~/^\d+\:/)) {
562: my $Part = $1;
563: $Tries = $result{"$Version:$Prob:resource.$Part.tries"};
564: $TempHash{"$Part.Tries"} = ($Tries) ? $Tries : 0;
565: $TotalTries += $Tries;
566: my $Val = $result{"$Version:$Prob:resource.$Part.solved"};
567: if ( $Val eq 'correct_by_student' )
568: { $Wrongs = $Tries - 1; $Code = 'Y'; }
569: elsif ( $Val eq 'correct_by_override' )
570: { $Wrongs = $Tries - 1; $Code = 'y'; }
571: elsif ( $Val eq 'incorrect_attempted' ||
572: $Val eq 'incorrect_by_override' )
573: { $Wrongs = $Tries; $Code = 'N'; }
574: $TempHash{"$Part.Code"} = $Code;
575: $TempHash{"$Part.Wrongs"} = $Wrongs;
576: }
577: }
1.7 minaeibi 578: }
1.1 albertel 579: for ( my $n = 0; $n < $PartNo; $n++ ) {
580: my $part = $TempHash{$n};
581: if ($PtrTry ne '') {$PtrTry .= ',';}
582: $PtrTry .= "$TempHash{$part.'.Tries'}";
583: $PtrCod .= "$TempHash{$part.'.Code'}";
584: }
585: }
586: else {
587: for(my $n=0; $n<$PartNo; $n++) {
588: if ($PtrTry ne '') {$PtrTry .= ',';}
589: $PtrTry .= "0";
590: $PtrCod .= "-";
591: }
592: }
593: }
594: }
595: $Str .= "\n".'</table>';
596: $r->print($Str);
597: $r->rflush();
598: }
599:
1.5 minaeibi 600: sub CreateTable {
1.7 minaeibi 601: my $ColNo=0;
602: foreach (keys(%Header)){
603: $ColNo++;
604: }
1.5 minaeibi 605: my ($Hd, $Hid)=@_;
606: if ( $Hd == 1 ) {
607: $r->print('<br><a href="'.$hash{'src_'.$Hid}.
1.7 minaeibi 608: '" target="_blank">'.$hash{'title_'.$Hid}.'</a>');
1.5 minaeibi 609: }
610: my $Result = "\n".'<table border=2>';
611: $Result .= '<tr><th>P#</th>'."\n";
1.7 minaeibi 612: for ( my $nIdx=0; $nIdx < $ColNo; $nIdx++ ) {
1.5 minaeibi 613: $Result .= '<th>'.'<input type="submit" name="sort" value="'.
614: $Header{$nIdx}.'" />'.'</th>'."\n";
615: }
616: $Result .= "\n".'</tr>'."\n";
617: $r->print( $Result );
618: $r->rflush();
619: }
1.1 albertel 620:
1.5 minaeibi 621: sub CloseTable {
622: $r->print("\n".'</table>'."\n");
623: $r->rflush();
624: }
625:
1.1 albertel 626: # ------------------------------------------- Prepare Statistics Table
627: sub PreStatTable {
628: my $CacheDB = "/home/httpd/perl/tmp/$ENV{'user.name'}".
629: "_$ENV{'user.domain'}_$cid\_statistics.db";
630: my $GraphDB = "/home/httpd/perl/tmp/$ENV{'user.name'}".
631: "_$ENV{'user.domain'}_$cid\_graph.db";
1.6 minaeibi 632: my $OpSel11='';
633: my $OpSel12='';
634: my $OpSel13='';
635: my $Status = $ENV{'form.status'};
636: if ( $Status eq 'Any' ) { $OpSel13='selected'; }
637: elsif ($Status eq 'Expired' ) { $OpSel12 = 'selected'; }
638: else { $OpSel11 = 'selected'; }
1.1 albertel 639:
640: my $Ptr = '';
1.6 minaeibi 641: $Ptr .= '<br><b> Student Status: </b>'."\n".
642: '<select name="status">'.
643: '<option '.$OpSel11.' >Active</option>'."\n".
644: '<option '.$OpSel12.' >Expired</option>'."\n".
645: '<option '.$OpSel13.' >Any</option> </select> '."\n";
646: $Ptr .= ' ';
647: $Ptr .= '<input type=submit name=sort value="Recalculate Statistics"/>'."\n";
1.1 albertel 648:
649: $Ptr .= '<br><b> Sorting Type: </b>'."\n".
650: '<select name="order"> <option '.$OpSel1.' >Ascending</option>'."\n".
651: '<option '.$OpSel2.'>Descending</option> </select> '."\n";
652: $Ptr .= ' ';
653: $Ptr .= '<input type="submit" name="sort" value="DoDiff Graph" />'."\n";
654: $Ptr .= ' ';
655: $Ptr .= '<input type="submit" name="sort" value="%Wrong Graph" />'."\n";
656:
657: $Ptr .= '<pre>'.
1.7 minaeibi 658: '<b> #Stdnts</b>: Total Number of Students opened the problem.<br>'.
659: '<b> Tries </b>: Total Number of Tries for solving the problem.<br>'.
660: '<b> Mod </b> : Maximunm Number of Tries for solving the problem.<br>'.
661: '<b> Mean </b>: Average Number of the tries. [ Tries / #Stdnts ]<br>'.
662: '<b> #YES </b>: Number of students solved the problem correctly.<br>'.
663: '<b> #yes </b>: Number of students solved the problem by override.<br>'.
664: '<b> %Wrng </b>: Percentage of students tried to solve the problem but'.
1.2 minaeibi 665: ' still incorrect. [ 100*((#Stdnts-(#YES+#yes))/#Stdnts) ]<br>'.
1.8 minaeibi 666: # ' DoDiff : Degree of Difficulty of the problem. [ Tries/(#YES+#yes+0.1) ]<br>'. Kashy formula
667: '<b> DoDiff </b>: Degree of Difficulty of the problem. [ 1 - ((#YES+#yes) / Tries) ]<br>'. #Gerd formula
1.7 minaeibi 668: '<b> S.D. </b> : Standard Deviation of the tries.'.
1.2 minaeibi 669: '[ sqrt(sum((Xi - Mean)^2)) / (#Stdnts-1)'.
1.5 minaeibi 670: ' where Xi denotes every student\'s tries ]<br>'.
1.7 minaeibi 671: '<b> Skew. </b>: Skewness of the students tries.'.
1.8 minaeibi 672: ' [ (sqrt( sum((Xi - Mean)^3) / #Stdnts)) / (S.D.^3) ]<br>'.
673: '<b> Dis.F. </b>: Discrimination Factor: A Standard for '.
674: 'evaluating the problem according to a Criterion<br>'.
675: '<b> [Applied Criterion in %27 Upper Students - '.
676: 'Applied the same Criterion in %27 Lower Students]</b><br>'.
1.14 minaeibi 677: '<b> 1st Criterion</b> for Sorting the Students: '.
678: '<b>Sum of Partial Credit Awarded / Total Number of Tries</b><br>'.
679: '<b> 2nd Criterion</b> for Sorting the Students: '.
680: '<b>Total number of Correct Answers / Total Number of Tries</b>'.
1.1 albertel 681: '</pre>';
682:
683: $r->print($Ptr);
684: $r->rflush();
685:
686: if ((-e "$CacheDB")&&($ENV{'form.sort'} ne 'Recalculate Statistics')) {
687: if (tie(%CachData,'GDBM_File',"$CacheDB",&GDBM_READER,0640)) {
688: tie(%GraphDat,'GDBM_File',$GraphDB,&GDBM_WRCREAT,0640);
689: &Cache_Statistics();
690: }
691: else {
692: $r->print("Unable to tie hash to db file");
693: }
694: }
695: else {
696: if (tie(%CachData,'GDBM_File',$CacheDB,&GDBM_WRCREAT,0640)) {
697: tie(%GraphDat,'GDBM_File',$GraphDB,&GDBM_WRCREAT,0640);
698: foreach (keys %DiscFac) {delete $CachData{$_};}
699: foreach (keys %CachData) {delete $CachData{$_};}
700: $DiscFlag=0;
701: &Build_Statistics();
702: }
703: else {
704: $r->print("Unable to tie hash to db file");
705: }
706: }
1.12 minaeibi 707:
1.15 minaeibi 708: # $r->print('Total instances of the problems : '.($p_count*($#students+1)));
1.1 albertel 709: untie(%CachData);
710: untie(%GraphDat);
711: }
712:
713:
714: # ------------------------------------- Find the section of student in a course
715:
716: sub usection {
1.6 minaeibi 717: my ($udom,$unam,$courseid,$ActiveFlag)=@_;
1.1 albertel 718: $courseid=~s/\_/\//g;
719: $courseid=~s/^(\w)/\/$1/;
1.6 minaeibi 720: foreach (split(/\&/,&Apache::lonnet::reply('dump:'.
721: $udom.':'.$unam.':roles',
722: &Apache::lonnet::homeserver($unam,$udom)))){
1.1 albertel 723: my ($key,$value)=split(/\=/,$_);
724: $key=&Apache::lonnet::unescape($key);
725: if ($key=~/^$courseid(?:\/)*(\w+)*\_st$/) {
726: my $section=$1;
727: if ($key eq $courseid.'_st') { $section=''; }
728: my ($dummy,$end,$start)=split(/\_/,&Apache::lonnet::unescape($value));
1.6 minaeibi 729: if ( $ActiveFlag ne 'Any' ) {
730: my $now=time;
731: my $notactive=0;
732: if ($start) {
733: if ($now<$start) { $notactive=1; }
734: }
735: if ($end) {
736: if ($now>$end) { $notactive=1; }
737: }
738: if ((($ActiveFlag eq 'Expired') && $notactive == 1) ||
739: (($ActiveFlag eq 'Active') && $notactive == 0 ) ) {
740: return $section;
741: }
742: else { return '-1'; }
743: }
1.1 albertel 744: return $section;
745: }
1.6 minaeibi 746: }
747: return '-1';
1.1 albertel 748: }
749:
750:
751: # ------ Dump the Student's DB file and handling the data for statistics table
752: sub ExtractStudentData {
1.14 minaeibi 753: my $student=shift;
1.1 albertel 754: my ($sname,$sdom) = split( /\:/, $student );
1.14 minaeibi 755: my %result = &Apache::lonnet::dump($cid,$sdom,$sname);
1.1 albertel 756: my $ResId;
1.5 minaeibi 757: my $PrOrd;
1.1 albertel 758: my $Dis = '';
759: my $Code;
760: my $Tries;
761: my $ParCr;
762: my $TotalTries = 0;
763: my $TotalOpend = 0;
764: my $ProbSolved = 0;
765: my $ProbTot = 0;
766: my $TimeTot = 0;
767: my $TotParCr = 0;
768: my $Wrongs;
769: my %TempHash;
1.15 minaeibi 770: my $Version;
1.1 albertel 771: my $LatestVersion;
772: my $SecLimit;
773: my $MapLimit;
1.14 minaeibi 774: my ($temp)=keys(%result);
775: unless ($temp=~/^error\:/) {
1.5 minaeibi 776: foreach my $CurCol(@cols) {
777: ($PrOrd,$ResId)=split(/\:/,$CurCol);
778: if ( !$CurCol ) { next; }
1.1 albertel 779: $ResId=~/(\d+)\.(\d+)/;
1.5 minaeibi 780: my $MapId=$1;
781: my $PrbId=$2;
1.15 minaeibi 782: my $MapOrg = $hash{'map_id_'.$MapId};
783: my $Map = &Apache::lonnet::declutter($MapOrg);
1.1 albertel 784: if ( $CurMap ne 'All Maps' ) {
785: my ( $ResMap, $NameMap ) = split(/\=/,$CurMap);
786: if ( $Map ne $ResMap ) { next; }
787: }
788: my $meta=$hash{'src_'.$ResId};
789: my $PartNo = 0;
790: $Dis .= ':';
791: undef %TempHash;
1.12 minaeibi 792:
793: foreach (split(/\,/,&Apache::lonnet::metadata($meta,'keys'))) {
794: if ($_=~/^stores\_(\w+)\_tries$/) {
1.1 albertel 795: my $Part=&Apache::lonnet::metadata($meta,$_.'.part');
796: if ( $TempHash{"$Part"} eq '' ) {
797: $TempHash{"$Part"} = $Part;
798: $TempHash{$PartNo}=$Part;
799: $TempHash{"$Part.Code"} = 'U';
1.5 minaeibi 800: $TempHash{"$Part.PrOrd"} = $PrOrd+$PartNo;
1.1 albertel 801: $PartNo++;
802: }
1.14 minaeibi 803: #my $Part=&Apache::lonnet::metadata($meta,$_.'.part');
1.1 albertel 804: }
1.5 minaeibi 805: }
1.15 minaeibi 806: &Apache::lonnet::declutter( $hash{'src_'.$ResId} );
807: my $URI = $hash{'src_'.$ResId};
1.5 minaeibi 808: my $Prob = $Map.'___'.$PrbId.'___'.
1.15 minaeibi 809: &Apache::lonnet::declutter($URI);
1.1 albertel 810: $Code='U';
811: $Tries = 0;
812: $ParCr = 0;
813: $Wrongs = 0;
1.15 minaeibi 814: $LatestVersion = $result{"version:$Prob"};
1.1 albertel 815: if ( $LatestVersion ) {
816: for ( my $Version=1; $Version<=$LatestVersion; $Version++ ) {
817: my $vkeys = $result{"$Version:keys:$Prob"};
818: my @keys = split(/\:/,$vkeys);
819: foreach my $Key (@keys) {
820: if (($Key=~/\.(\w+)\.solved$/) && ($Key!~/^\d+\:/)) {
821: my $Part = $1;
822: $Tries = $result{"$Version:$Prob:resource.$Part.tries"};
823: $ParCr = $result{"$Version:$Prob:resource.$Part.awarded"};
824: my $Time = $result{"$Version:$Prob:timestamp"};
825: $TempHash{"$Part.Time"} = ($Time) ? $Time : 0;
826: $TempHash{"$Part.Tries"} = ($Tries) ? $Tries : 0;
827: $TempHash{"$Part.ParCr"} = ($ParCr) ? $ParCr : 0;
828: $TotalTries += $TempHash{"$Part.Tries"};
829: $TotParCr += $TempHash{"$Part.ParCr"};
830: my $Val = $result{"$Version:$Prob:resource.$Part.solved"};
831: if ( $Val eq 'correct_by_student' )
832: { $Wrongs = $Tries - 1; $Code = 'C'; }
833: elsif ( $Val eq 'correct_by_override' )
834: { $Wrongs = $Tries - 1; $Code = 'O'; }
835: elsif ( $Val eq 'incorrect_attempted' ||
836: $Val eq 'incorrect_by_override' )
837: { $Wrongs = $Tries; $Code = 'I'; }
838: $TempHash{"$Part.Code"} = $Code;
839: $TempHash{"$Part.Wrongs"} = $Wrongs;
840: }
841: }
842: }
843: for ( my $n = 0; $n < $PartNo; $n++ ) {
844: my $part = $TempHash{$n};
845: my $Yes = 0;
846: if ( $TempHash{$part.'.Code'} eq 'C' ||
847: $TempHash{$part.'.Code'} eq 'O' )
1.7 minaeibi 848: {$ProbSolved++;$Yes=1;}
849:
850: # my $ptr = "$hash{'title_'.$ResId}";
1.12 minaeibi 851: my $ptr = $TempHash{$part.'.PrOrd'}.'&'.$ResId;
1.7 minaeibi 852:
1.1 albertel 853: if ( $PartNo > 1 ) {
1.5 minaeibi 854: $ptr .= "*(part $part)";
1.12 minaeibi 855: $Dis .= '&';
1.1 albertel 856: }
857: my $Fac = ($TempHash{"$part.Tries"}) ?
858: ($TempHash{"$part.ParCr"}/$TempHash{"$part.Tries"}) : 0;
859: my $DisF;
860: if ( $Fac > 0 && $Fac < 1 ) {
861: $DisF = sprintf( "%.4f", $Fac );
862: }
863: else {$DisF = $Fac;}
1.15 minaeibi 864: # $DisF .= '+'.$TempHash{"$part.Time"};33333333
1.1 albertel 865: $TimeTot += $TempHash{"$part.Time"};
1.7 minaeibi 866: $Dis .= $TempHash{$part.'.PrOrd'}.'='.$DisF.'+'.$Yes;
1.12 minaeibi 867: $ptr .= "&$TempHash{$part.'.Tries'}".
868: "&$TempHash{$part.'.Wrongs'}".
869: "&$TempHash{$part.'.Code'}";
1.1 albertel 870: push (@list, $ptr);
871: $TotalOpend++;
872: $ProbTot++;
873: }
874: }
1.5 minaeibi 875: #else {
876: #for(my $n=0; $n<$PartNo; $n++) {
1.11 minaeibi 877: # push (@list, "$TempHash{'0'.'.PrOrd'}.':'.$ResId:0:0:U");
1.5 minaeibi 878: # $ProbTot++;
879: #}
880: #}
1.1 albertel 881: }
882: if ( $TotalTries ) {
883: my $DisFac = ( $TotalTries ) ? ($TotParCr/$TotalTries) : 0;
884: my $DisFactor = sprintf( "%.4f", $DisFac );
1.7 minaeibi 885: $DiscFac{$DisFactor}=$Dis;
886: #my $time;
887: #if ($ProbSolved){
888: #$time = int(($TimeTot/$ProbSolved)-10000000);
889: #}
890: #$DiscFac{($DisFactor.':'.$sname.':'.$ProbTot.':'.$TotalOpend.':'.
891: # $TotalTries.':'.$ProbSolved.':'.$time)}=$Dis;
1.1 albertel 892: }
893: }
894: #$r->print($sname.' PrCr= '.$TotParCr.' Slvd= '.$ProbSolved.' Tries='.$TotalTries.'<br>');
895: }
896:
897:
898: # ------------------------------------------------------------ Build page table
899: sub tracetable {
900: my ($rid,$beenhere)=@_;
1.12 minaeibi 901: my $IsMap=0;
1.1 albertel 902: $rid=~/(\d+)\.(\d+)/;
903: $maps{&Apache::lonnet::declutter($hash{'map_id_'.$1})}='';#$hash{'title_'.$rid};
1.5 minaeibi 904: #$maps{$HWN}=$hash{'title_'.$rid};
1.1 albertel 905: unless ($beenhere=~/\&$rid\&/) {
906: $beenhere.=$rid.'&';
907: if (defined($hash{'is_map_'.$rid})) {
908: my $cmap=$hash{'map_type_'.$hash{'map_pc_'.$hash{'src_'.$rid}}};
909: if ( $cmap eq 'sequence' || $cmap eq 'page' ) {
910: $cols[$#cols+1]=0;
1.5 minaeibi 911: $P_Order++;
912: $HWN=$P_Order;
1.12 minaeibi 913: $mapsort{$HWN} = $rid.':';
914: $IsMap=1;
915:
1.1 albertel 916: #$maps{&Apache::lonnet::declutter($hash{'src_'.$rid})}=
917: # $hash{'title_'.$rid};
918: }
919: if ((defined($hash{'map_start_'.$hash{'src_'.$rid}})) &&
920: (defined($hash{'map_finish_'.$hash{'src_'.$rid}}))) {
1.5 minaeibi 921: my $frid=$hash{'map_finish_'.$hash{'src_'.$rid}};
1.1 albertel 922:
1.5 minaeibi 923: &tracetable($hash{'map_start_'.$hash{'src_'.$rid}},
924: '&'.$frid.'&');
1.1 albertel 925:
1.5 minaeibi 926: $cols[$#cols+1]=($P_Order+1).':'.$frid;
927:
928: my $meta=$hash{'src_'.$frid};
929: my $PartNo = 0;
1.14 minaeibi 930: my $Part;
1.13 minaeibi 931: # if ($IsMap==0){
1.5 minaeibi 932: if ($meta) {
933: if ($meta=~/\.(problem|exam|quiz|assess|survey|form)$/) {
934: foreach (split(/\,/,&Apache::lonnet::metadata($meta,'keys'))) {
1.12 minaeibi 935: if ($_=~/^stores\_(\w+)\_tries$/) {
1.14 minaeibi 936: $Part=&Apache::lonnet::metadata($meta,$_.'.part');
1.5 minaeibi 937: $P_Order++;
938: $mapsort{$HWN} .= '&'.$P_Order;
939: $PartNo++;
1.11 minaeibi 940: #$r->print('<br>'.$PartNo.'---'.$P_Order);
1.5 minaeibi 941: }
1.14 minaeibi 942: foreach my $K(split(/\,/,&Apache::lonnet::metadata($meta,'packages'))) {
943: if ($K=~/^optionresponse\_($Part)\_(\w+)$/) {
944: #$r->print('<br>'.$_.'...'.$P_Order.'---'.$Part);
1.16 minaeibi 945: $OpResp{$P_Order}="$frid:$Part";
1.14 minaeibi 946: }
947: }
1.5 minaeibi 948: }
949: }
950: }
1.1 albertel 951: }
1.13 minaeibi 952: # }
1.1 albertel 953: } else {
1.5 minaeibi 954: $cols[$#cols+1]=($P_Order+1).':'.$rid;
955: my $meta=$hash{'src_'.$rid};
956: my $PartNo = 0;
1.12 minaeibi 957: if ($meta) {
1.5 minaeibi 958: if ($meta=~/\.(problem|exam|quiz|assess|survey|form)$/) {
1.12 minaeibi 959: foreach my $Key(split(/\,/,&Apache::lonnet::metadata($meta,'keys'))) {
960: if ($Key=~/^stores\_(\w+)\_tries$/) {
961: my $Part=&Apache::lonnet::metadata($meta,$Key.'.part');
1.5 minaeibi 962: $P_Order++;
963: $mapsort{$HWN} .= '&'.$P_Order;
964: $PartNo++;
1.12 minaeibi 965: foreach (split(/\,/,&Apache::lonnet::metadata($meta,'packages'))) {
966: if ($_=~/^optionresponse\_($Part)\_(\w+)$/) {
967: #$r->print('<br>'.$_.'...'.$P_Order.'---'.$Part);
1.16 minaeibi 968: $OpResp{$P_Order}="$rid:$Part";;
1.12 minaeibi 969: }
970:
971: }
972:
1.5 minaeibi 973: }
974: }
975: }
1.12 minaeibi 976: }
1.1 albertel 977: }
978: if (defined($hash{'to_'.$rid})) {
1.5 minaeibi 979: foreach (split(/\,/,$hash{'to_'.$rid})){
1.1 albertel 980: &tracetable($hash{'goesto_'.$_},$beenhere);
1.5 minaeibi 981: }
1.1 albertel 982: }
983: }
984: }
985:
986: sub MySort {
1.6 minaeibi 987: if ( $Pos > 0 ) {
1.1 albertel 988: if ($ENV{'form.order'} eq 'Descending') {$b <=> $a;}
989: else { $a <=> $b; }
990: }
991: else {
992: if ($ENV{'form.order'} eq 'Descending') {$b cmp $a;}
993: else { $a cmp $b; }
994: }
995: }
996:
1.15 minaeibi 997: sub Create_PrgWin {
998: #----------- Create progress
1.1 albertel 999: $r->print(<<ENDPOP);
1.5 minaeibi 1000: <script>
1.1 albertel 1001: popwin=open('','popwin','width=400,height=100');
1.7 minaeibi 1002: popwin.document.writeln('<html><body bgcolor="#88DDFF">'+
1.1 albertel 1003: '<title>LON-CAPA Statistics</title>'+
1004: '<h4>Computation Progress</h4>'+
1005: '<form name=popremain>'+
1006: '<input type=text size=35 name=remaining value=Starting></form>'+
1007: '</body></html>');
1008: popwin.document.close();
1.5 minaeibi 1009: </script>
1.1 albertel 1010: ENDPOP
1011:
1012: $r->rflush();
1.15 minaeibi 1013: }
1014:
1015:
1016: sub Update_PrgWin {
1.1 albertel 1017: #----------- update progress
1.15 minaeibi 1018: my $index = shift;
1019: $r->print('<script>popwin.document.popremain.remaining.value="'.
1020: 'Computing '.($index+1).'/'.($#students+1).': '.
1021: $students[$index].'";</script>');
1022: $r->rflush();
1023: }
1024:
1025: sub Close_PrgWin {
1026: #--------------------- close Progress Line
1027: $r->print('<script>popwin.close()</script>');
1028: $r->rflush();
1029: }
1.1 albertel 1030:
1.15 minaeibi 1031: sub Build_Statistics {
1032: &Create_PrgWin();
1033: # ---------------------------- Gathering the Data of students' tries
1034: for (my $index=0;$index<=$#students;$index++) {
1035: &Update_PrgWin($index);
1.14 minaeibi 1036: &ExtractStudentData($students[$index]);
1.1 albertel 1037: }
1.7 minaeibi 1038:
1.1 albertel 1039: # -------------------- sorting the Data
1.7 minaeibi 1040: $r->print('<script>popwin.document.popremain.remaining.value="'.
1041: 'Calculating Discrimination Factors...";</script>');
1042:
1.5 minaeibi 1043: @list = sort (@list);
1044:
1.7 minaeibi 1045:
1046: &Discriminant();
1047:
1.1 albertel 1048: $OpSel2='';
1049: $OpSel1='selected';
1050:
1051: $p_count = 0;
1052: my $nIdx = 0;
1053: my $dummy;
1054: my $p_val;
1055: my $ResId;
1056: my $NoElements = $#list + 1;
1057: #-------------------------------- loop for data representation
1.5 minaeibi 1058: foreach (sort keys %mapsort) {
1059: my ($Hid,$pr)=split(/\:/,$mapsort{$_});
1060: my @lpr=split(/\&/,$pr);
1061: &CreateTable(1,$Hid);
1062: for (my $i=1; $i<=$#lpr; $i++) {
1063: my %storestats=();
1.12 minaeibi 1064: my ($PrOrd,$Prob,$Tries,$Wrongs,$Code)=split(/\&/,$list[$nIdx]);
1.5 minaeibi 1065: my $Temp = $Prob;
1066: my $MxTries = 0;
1067: my $TotalTries = 0;
1068: my $YES = 0;
1069: my $Incorrect = 0;
1070: my $Override = 0;
1071: my $StdNo = 0;
1072: my @StdLst;
1073: while ( $PrOrd == $lpr[$i] )
1074: {
1075: $nIdx++;
1076: $StdNo++;
1077: $StdLst[ $StdNo ] = $Tries;
1078: $TotalTries += $Tries;
1079: if ( $MxTries < $Tries ) { $MxTries = $Tries; }
1080: if ( $Code eq 'C' ){ $YES++; }
1081: elsif( $Code eq 'I' ) { $Incorrect++; }
1082: elsif( $Code eq 'O' ) { $Override++; }
1083: elsif( $Code eq 'U' ) { $StdNo--; }
1.12 minaeibi 1084: ($PrOrd,$Prob,$Tries,$Wrongs,$Code)=split(/\&/,$list[$nIdx]);
1.5 minaeibi 1085: }
1086:
1087: $p_count++;
1088: my $Dummy;
1089: ($ResId,$Dummy)=split(/\*/,$Temp);
1.1 albertel 1090:
1.5 minaeibi 1091: $Temp = '<a href="'.$hash{'src_'.$ResId}.
1092: '" target="_blank">'.$hash{'title_'.$ResId}.$Dummy.'</a>';
1.15 minaeibi 1093:
1.5 minaeibi 1094: my $res = &Apache::lonnet::declutter($hash{'src_'.$ResId});
1095: my $urlres=$res;
1.1 albertel 1096:
1.5 minaeibi 1097: $ResId=~/(\d+)\.(\d+)/;
1098: my $Map = &Apache::lonnet::declutter( $hash{'map_id_'.$1} );
1099: $urlres=$Map;
1.1 albertel 1100:
1.5 minaeibi 1101: $res = '<a href="'.$hash{'src_'.$ResId}.'">'.$res.'</a>';
1102: #$Map = '<a href="'.$Map.'">'.$res.'</a>';
1.1 albertel 1103:
1104: #------------------------ Compute the Average of Tries about one problem
1.5 minaeibi 1105: my $Average = ($StdNo) ? $TotalTries/$StdNo : 0;
1.1 albertel 1106:
1.5 minaeibi 1107: $storestats{$ENV{'request.course.id'}.'___'.$urlres.'___timestamp'}=time;
1108: $storestats{$ENV{'request.course.id'}.'___'.$urlres.'___stdno'}=$StdNo;
1109: $storestats{$ENV{'request.course.id'}.'___'.$urlres.'___avetries'}=$Average;
1.1 albertel 1110:
1111: #-------------------------------- Compute percentage of Wrong tries
1.5 minaeibi 1112: my $Wrong = ( $StdNo ) ? 100 * ( $Incorrect / $StdNo ) : 0;
1.1 albertel 1113:
1114: #-------------------------------- Compute Standard Deviation
1.5 minaeibi 1115: my $StdDev = 0;
1116: if ( $StdNo > 1 ) {
1117: for ( my $n = 0; $n < $StdNo; $n++ ) {
1118: my $Dif = $StdLst[ $n ]-$Average;
1119: $StdDev += $Dif*$Dif;
1120: }
1121: $StdDev /= ( $StdNo - 1 );
1122: $StdDev = sqrt( $StdDev );
1123: }
1.1 albertel 1124:
1125: #-------------------------------- Compute Degree of Difficulty
1.5 minaeibi 1126: my $DoDiff = 0;
1127: if( $TotalTries > 0 ) {
1128: $DoDiff = 1 - ( ( $YES + $Override ) / $TotalTries );
1.1 albertel 1129: # $DoDiff = ($TotalTries)/($YES + $Override+ 0.1);
1.5 minaeibi 1130: }
1.1 albertel 1131:
1.5 minaeibi 1132: $storestats{$ENV{'request.course.id'}.'___'.$urlres.'___difficulty'}=$DoDiff;
1.1 albertel 1133:
1134: #-------------------------------- Compute the Skewness
1.5 minaeibi 1135: my $Skewness = 0;
1136: my $Sum = 0;
1137: if ( $StdNo > 0 && $StdDev > 0 ) {
1138: for ( my $n = 0; $n < $StdNo; $n++ ) {
1139: my $Dif = $StdLst[ $n ]-$Average;
1140: $Skewness += $Dif*$Dif*$Dif;
1141: }
1142: $Skewness /= $StdNo;
1.15 minaeibi 1143: $Skewness /= $StdDev*$StdDev*$StdDev;
1.5 minaeibi 1144: }
1.7 minaeibi 1145:
1146: #--------------------- Compute the Discrimination Factors
1.8 minaeibi 1147: my ($Up1,$Up2)=split(/\:/,$DisUp{$lpr[$i]});
1148: my ($Lw1,$Lw2)=split(/\:/,$DisLow{$lpr[$i]});
1149: my $Dis1 = $Up1 - $Lw1;
1150: my $Dis2 = $Up2 - $Lw2;
1151: my $_D1 = sprintf("%.2f", $Dis1);
1152: my $_D2 = sprintf("%.2f", $Dis2);
1.7 minaeibi 1153:
1.1 albertel 1154: #----------------- Some restition in presenting the float numbers
1.5 minaeibi 1155: my $Avg = sprintf( "%.2f", $Average );
1156: my $Wrng = sprintf( "%.1f", $Wrong );
1157: my $SD = sprintf( "%.1f", $StdDev );
1158: my $DoD = sprintf( "%.2f", $DoDiff );
1159: my $Sk = sprintf( "%.1f", $Skewness );
1.15 minaeibi 1160: my $join = $lpr[$i].'&'.$Temp.'&'.$StdNo.'&'.
1.12 minaeibi 1161: $TotalTries.'&'.$MxTries.'&'.$Avg.'&'.
1162: $YES.'&'.$Override.'&'.$Wrng.'&'.$DoD.'&'.
1.15 minaeibi 1163: $SD.'&'.$Sk.'&'.$_D1.'&'.$_D2.'&'.
1164: $Prob;
1.5 minaeibi 1165: $CachData{($p_count-1)}=$join;
1166:
1167: $urlres=~/^(\w+)\/(\w+)/;
1168: if ($StdNo) {
1169: &Apache::lonnet::put('resevaldata',\%storestats,$1,$2);
1170: }
1.1 albertel 1171: #-------------------------------- Row of statistical table
1.5 minaeibi 1172: if ( $DiscFlag == 0 ) {
1173: &TableRow($join,$i,($p_count-1));
1174: }
1175: }
1176: &CloseTable();
1.1 albertel 1177: }
1.15 minaeibi 1178: &Close_PrgWin();
1.1 albertel 1179: }
1180:
1181: sub Cache_Statistics {
1182: my @list = ();
1183: my $Useful;
1184: my $UnUseful;
1185: my %myHeader = reverse( %Header );
1186: $Pos = $myHeader{$ENV{'form.sort'}};
1.5 minaeibi 1187: if ($Pos > 0) {$Pos++;}
1.1 albertel 1188: $p_count = 0;
1189: foreach my $key( keys %CachData) {
1.12 minaeibi 1190: my @Temp=split(/\&/,$CachData{$key});
1.6 minaeibi 1191: if ( $Pos == 0 ) {
1.1 albertel 1192: ($UnUseful,$Useful)=split(/\>/,$Temp[$Pos]);
1193: }
1194: else {
1195: $Useful = $Temp[$Pos];
1196: }
1.12 minaeibi 1197: $list[$p_count]=$Useful.'@'.$CachData{$key};
1.1 albertel 1198: $p_count++;
1199: }
1200:
1201: @list = sort MySort (@list);
1202:
1.5 minaeibi 1203: my $nIdx=0;
1204:
1205: if ( $Pos == 0 ) {
1206: foreach (sort keys %mapsort) {
1207: my ($Hid,$pr)=split(/\:/,$mapsort{$_});
1208: &CreateTable(1,$Hid);
1209: my @lpr=split(/\&/,$pr);
1210: for (my $i=1; $i<=$#lpr; $i++) {
1.12 minaeibi 1211: my($Pre, $Post) = split(/\@/,$list[$nIdx]);
1212: #$r->print('<br>'.$Pre.'---'.$Post);
1.5 minaeibi 1213: &TableRow($Post,$i,$nIdx);
1214: $nIdx++;
1215: }
1216: &CloseTable();
1217: }
1218: }
1219: else {
1220: &CreateTable(0);
1221: for ( my $nIdx = 0; $nIdx < $p_count; $nIdx++ ) {
1.12 minaeibi 1222: my($Pre, $Post) = split(/\@/,$list[$nIdx]);
1.5 minaeibi 1223: &TableRow($Post,$nIdx,$nIdx);
1224: }
1225: &CloseTable();
1226: }
1227: }
1228:
1229: sub TableRow {
1230: my ($Str,$Idx,$RealIdx)=@_;
1.12 minaeibi 1231: my($PrOrd,$Temp,$StdNo,$TotalTries,$MxTries,$Avg,$YES,$Override,
1232: $Wrng,$DoD,$SD,$Sk,$_D1,$_D2,$Prob)=split(/\&/,$Str);
1233: my $Ptr = "\n".'<tr>'.
1.5 minaeibi 1234: "\n".'<td>'.($RealIdx+1).'</td>'.
1.13 minaeibi 1235: # "\n".'<td>'.$PrOrd.$Temp.'</td>'.
1.8 minaeibi 1236: "\n".'<td>'.$Temp.'</td>'.
1.7 minaeibi 1237: "\n".'<td bgcolor="#EEFFCC"> '.$StdNo.'</td>'.
1238: "\n".'<td bgcolor="#EEFFCC">'.$TotalTries.'</td>'.
1239: "\n".'<td bgcolor="#EEFFCC">'.$MxTries.'</td>'.
1.5 minaeibi 1240: "\n".'<td bgcolor="#DDFFFF">'.$Avg.'</td>'.
1241: "\n".'<td bgcolor="#DDFFFF"> '.$YES.'</td>'.
1242: "\n".'<td bgcolor="#DDFFFF"> '.$Override.'</td>'.
1243: "\n".'<td bgcolor="#FFDDDD"> '.$Wrng.'</td>'.
1244: "\n".'<td bgcolor="#FFDDDD">'.$DoD.'</td>'.
1245: "\n".'<td bgcolor="#DDFFDD"> '.$SD.'</td>'.
1246: "\n".'<td bgcolor="#DDFFDD"> '.$Sk.'</td>'.
1.8 minaeibi 1247: "\n".'<td bgcolor="#FFDDFF"> '.$_D1.'</td>'.
1.12 minaeibi 1248: "\n".'<td bgcolor="#FFDDFF"> '.$_D2.'</td>';
1249: $r->print("\n".$Ptr.'</tr>' );
1.5 minaeibi 1250: $GraphDat{$RealIdx}=$DoD.':'.$Wrng;
1.1 albertel 1251: }
1252:
1253: # ------------------------------------------- Prepare data for Graphical chart
1254:
1255: sub GetGraphData {
1.17 ! minaeibi 1256: my $ylab = shift;
1.1 albertel 1257: my $Col;
1258: my $data='';
1259: my $count = 0;
1260: my $Max = 0;
1261: my $cid=$ENV{'request.course.id'};
1262: my $GraphDB = "/home/httpd/perl/tmp/$ENV{'user.name'}".
1263: "_$ENV{'user.domain'}_$cid\_graph.db";
1264: foreach (keys %GraphDat) {delete $GraphDat{$_};}
1265: if (-e "$GraphDB") {
1266: if (tie(%GraphDat,'GDBM_File',"$GraphDB",&GDBM_READER,0640)) {
1.17 ! minaeibi 1267: if ( $ylab eq 'DoDiff Graph' ) {
! 1268: $ylab = 'Degree-of-Difficulty';
1.1 albertel 1269: $Col = 0;
1270: }
1271: else {
1.17 ! minaeibi 1272: $ylab = 'Wrong-Percentage';
1.1 albertel 1273: $Col = 1;
1274: }
1275: foreach (sort NumericSort keys %GraphDat) {
1276: my @Temp=split(/\:/,$GraphDat{$_});
1277: my $inf = $Temp[$Col];
1278: if ( $Max < $inf ) {$Max = $inf;}
1279: $data .= $inf.',';
1280: $count++;
1281: }
1.15 minaeibi 1282: if ( $Max > 1 ) {
1283: $Max += (10 - $Max % 10);
1284: $Max = int($Max);
1285: }
1286: else { $Max = 1; }
1.1 albertel 1287: untie(%GraphDat);
1288: my $Course = $ENV{'course.'.$cid.'.description'};
1289: $Course =~ s/\ /"_"/eg;
1.17 ! minaeibi 1290: $GData=$Course.'&'.'Problems'.'&'.$ylab.'&'.$Max.'&'.$count.'&'.$data;
1.1 albertel 1291: }
1292: else {
1293: $r->print("Unable to tie hash to db file");
1294: }
1295: }
1296: }
1297:
1298:
1299: sub initial {
1300: # --------------------------------- Initialize the global varaibles
1301: undef @students;
1302: undef @cols;
1303: undef %maps;
1304: undef %section;
1305: undef %StuBox;
1306: undef @list;
1307: undef %CachData;
1308: undef %GraphDat;
1309: undef %DiscFac;
1.12 minaeibi 1310: undef %OpResp;
1.15 minaeibi 1311: undef %ConceptData;
1.1 albertel 1312: undef $CurMap;
1313: undef $CurSec;
1314: undef $CurStu;
1315: undef $p_count;
1316: undef $Pos;
1317: undef $GData;
1.5 minaeibi 1318: $DiscFlag=0;
1319: $P_Order=100000;
1320: $HWN=$P_Order;
1.1 albertel 1321: }
1322:
1323:
1324: sub ClassList {
1325:
1326: &GetStatus();
1327:
1328: $cid=$ENV{'request.course.id'};
1329: my $chome=$ENV{'course.'.$cid.'.home'};
1330: my ($cdom,$cnum)=split(/\_/,$cid);
1331: # ----------------------- Get first and last resource, see if there is anything
1332: $firstres=$hash{'map_start_/res/'.$ENV{'request.course.uri'}};
1333: $lastres=$hash{'map_finish_/res/'.$ENV{'request.course.uri'}};
1334: if (($firstres) && ($lastres)) {
1335: # ----------------------------------------------------------------- Render page
1336: my $classlst=&Apache::lonnet::reply
1337: ('dump:'.$cdom.':'.$cnum.':classlist',$chome);
1338: my $StudNo = 0;
1.6 minaeibi 1339: my $now=time;
1.1 albertel 1340: unless ($classlst=~/^error\:/) {
1341: foreach (sort split(/\&/,$classlst)) {
1342: my ($name,$value)=split(/\=/,$_);
1343: my ($end,$start)=split(/\:/,&Apache::lonnet::unescape($value));
1344: $name=&Apache::lonnet::unescape($name);
1345: my ($sname,$sdom)=split(/\:/,$name);
1.6 minaeibi 1346: my $active=1;
1347: my $Status=$ENV{'form.status'};
1348: $Status = ($Status) ? $Status : 'Active';
1349: if ( ( ($end) && $now > $end ) &&
1350: ( ($Status eq 'Active') ) ) { $active=0; }
1351: if ( ($Status eq 'Expired') &&
1352: ($end == 0 || $now < $end) ) { $active=0; }
1.15 minaeibi 1353: #//new
1354: # $Status = 'Any';
1355: #end new
1.6 minaeibi 1356: if ($active) {
1357: my $thisindex=$#students+1;
1358: $name=&Apache::lonnet::unescape($name);
1359: $students[$thisindex]=$name;
1360: my ($sname,$sdom)=split(/\:/,$name);
1361: #my %reply=&Apache::lonnet::idrget($sdom,$sname);
1362: #my $reply=&Apache::lonnet::reply('get:'.$sdom.':'.$sname.
1363: # ':environment:lastname&generation&firstname&middlename',
1364: # &Apache::lonnet::homeserver($sname,$sdom));
1365: my $ssec=&usection($sdom,$sname,$cid,$Status);
1.15 minaeibi 1366: # if ($ssec==-1 ) {next;}
1367: if ($ssec==-1 || $ssec eq 'adm' ) {next;}
1.6 minaeibi 1368: $ssec=($ssec) ? $ssec : '(none)';
1369: #$ssec=(int($ssec)) ? int($ssec) : $ssec;
1370: $section{$ssec}=$ssec;
1371: if ($CurSec eq 'All Sections' || $ssec eq $CurSec) {
1372: $students[$StudNo]=$name;
1.7 minaeibi 1373: $StuBox{$sname}=$sdom;
1.6 minaeibi 1374: }
1375: $StudNo++;
1376: }
1.1 albertel 1377: }
1378: }
1379: else {
1380: $r->print('<h1>Could not access course data</h1>');
1.2 minaeibi 1381: }
1.1 albertel 1382: $r->print("Total number of students : ".($#students+1));
1383: $r->rflush();
1384: # --------------- Find all assessments and put them into some linear-like order
1385: &tracetable($firstres,'&'.$lastres.'&');
1.5 minaeibi 1386: # my $c=0;
1387: # foreach (sort keys %mapsort) {
1388: # $r->print('<br>'.$c.')'.$_.' ... '.$mapsort{$_});
1389: # $c++;
1390: # }
1.15 minaeibi 1391: # my $c=1;
1392: # foreach (sort keys %OpResp) {
1393: # $r->print('<br>'.$c.')'.$_.' ... '.$OpResp{$_}.' ... '.$hash{'src_'.$OpResp{$_}});
1394: # $c++;
1395: # }
1396:
1.1 albertel 1397: }
1398:
1399: # ------------------------------------------------------------- End render page
1400: else {
1401: $r->print('<h3>Undefined course sequence</h3>');
1402: }
1.15 minaeibi 1403: }
1404:
1405:
1406: sub Title {
1407: $r->print('<html><head><title>LON-CAPA Statistics</title></head>');
1408: $r->print('<body bgcolor="#FFFFFF">'.
1409: '<script>window.focus(); window.width=500;window.height=500;</script>'.
1410: '<img align=right src=/adm/lonIcons/lonlogos.gif>');
1411: # ---------------------------------------------------------------- Course title
1412: $r->print('<h1> Course : "'.
1413: $ENV{'course.'.$ENV{'request.course.id'}.
1414: '.description'}.'"</h1><h2>'.localtime().'</h2>');
1415: # ------------------------------- This is going to take a while, produce output
1416: $r->rflush();
1417: }
1418:
1419: sub CreateForm {
1420: $r->print("\n".'<form name=stat method=post action="/adm/statistics" >');
1421: my $content = $ENV{'form.sort'};
1422: if ($content eq '' || $content eq 'Return to Menu') {
1423: my $Ptr = '<h3>';
1424: $Ptr .= '<input type=submit name=sort value="Problem Stats"/>';
1425: $Ptr .= '<br><br>';
1426: $Ptr .= '<input type=submit name=sort value="Problem Analysis"/>';
1427: $Ptr .= '<br><br>';
1428: $Ptr .= '<input type=submit name=sort value="Student Assessment"/>';
1429: $Ptr .= '</h3>';
1430: $r->print( $Ptr );
1431: }
1432: else {
1433: if ( $content eq 'Student Assessment' ||
1434: $content eq 'Create Student Report' ) {
1435: &MapSecOptions();
1436: &StudentOptions();
1437: &StudentReport($CurStu,$StuBox{"$CurStu"});
1438: }
1439: elsif ( $content eq 'Problem Analysis' ) {
1440: &AnalyzeProblem();
1441: }
1442: else {
1443: &MapSecOptions();
1444: &PreStatTable();
1445: }
1446: }
1.1 albertel 1447: }
1448:
1449:
1450: sub Menu {
1.15 minaeibi 1451: &initial();
1452: &Title();
1453: &ClassList();
1.1 albertel 1454: my $InpStr = $ENV{'form.sort'};
1.15 minaeibi 1455: if ($InpStr=~/^Analyze\_/) {
1456: &ShowOpGraph($InpStr,$ENV{'form.interval'});
1457: }
1458: elsif ( $InpStr eq 'DoDiff Graph' || $InpStr eq '%Wrong Graph' ) {
1.1 albertel 1459: &GetGraphData($InpStr);
1460: $r->print('<IMG src="/cgi-bin/graph.gif?'.$GData.'" />');
1461: }
1462: else {
1.15 minaeibi 1463: &CreateForm();
1464: $r->print("\n".'</form>');
1.1 albertel 1465: }
1.15 minaeibi 1466: $r->print("\n".'</body>'.
1467: "\n".'</html>');
1468: $r->rflush();
1.1 albertel 1469: }
1470:
1471: sub StudentOptions {
1472: my $OpSel5='';
1473: $CurStu = $ENV{'form.student'};
1474: if ( $CurStu eq '' ) {
1475: $CurStu = 'All Students';
1476: $OpSel5 = 'selected';
1477: }
1478: my $Ptr ='';
1479: # ----------------------------------- Loading the Students Combobox
1480: $Ptr .= '<br><b>Select Student</b>'."\n".
1481: '<select name="student">'."\n".
1482: '<option '.$OpSel5.'>All Students</option>';
1483: foreach my $key ( sort keys %StuBox ) {
1484: $Ptr .= '<option';
1485: if ($CurStu eq $key) {$Ptr .= ' selected';}
1486: $Ptr .= '>'.$key."</option>\n";
1487: }
1488: $Ptr .= '</select>';
1489: $Ptr .= '<br><input type="submit" name="sort" value="Create Student Report" />';
1490: $r->print( $Ptr );
1491: $r->rflush();
1492: }
1493:
1.15 minaeibi 1494:
1.1 albertel 1495: sub GetStatus {
1496: $OpSel1='';
1497: $OpSel2='';
1498: $OpSel3='';
1499: $OpSel4='';
1500:
1501: if ( $ENV{'form.order'} eq 'Descending' ) { $OpSel2='selected'; }
1502: else { $OpSel1 = 'selected'; }
1.5 minaeibi 1503:
1504: my %myHeader = reverse( %Header );
1505: $Pos = $myHeader{$ENV{'form.sort'}};
1506: if ($Pos == 0) {
1507: $OpSel1 = 'selected';
1508: $ENV{'form.order'}='Ascendig';
1509: }
1510:
1.1 albertel 1511: $CurMap = $ENV{'form.maps'};
1512: if ( $CurMap eq '' ) {
1513: $CurMap = 'All Maps';
1514: $OpSel3 = 'selected';
1515: }
1516: $CurSec = $ENV{'form.section'};
1517: if ( $CurSec eq '' ) {
1518: $CurSec = 'All Sections';
1519: $OpSel4 = 'selected';
1520: }
1521: }
1522:
1523:
1524: sub MapSecOptions {
1525: # ----------------------------------- Loading the Maps Combobox
1526: my $Ptr = '<br>';
1527: $Ptr .= '<br><input type="submit" name="sort" value="Return to Menu" />';
1528: $Ptr .= '<br><b> Select Map </b>'."\n".
1529: '<select name="maps">'."\n".
1530: '<option '.$OpSel3.'>All Maps</option>';
1531: foreach my $key ( sort keys %maps ) {
1532: $Ptr .= '<option';
1533: if ($CurMap eq $key) {$Ptr .= ' selected';}
1534: $Ptr .= '>'.$key."</option>\n";
1535: }
1536: $Ptr .= '</select>';
1537: $Ptr .= ' ';
1538:
1539: # ----------------------------------- Loading the Sections Combobox
1540: $Ptr .= '<br><b>Select Section</b>'."\n".
1541: '<select name="section">'."\n".
1542: '<option '.$OpSel4.'>All Sections</option>';
1543: foreach my $key ( sort keys %section ) {
1544: $Ptr .= '<option';
1545: if ($CurSec eq $key) {$Ptr .= ' selected';}
1546: $Ptr .= '>'.$key."</option>"."\n";
1547: }
1548: $Ptr .= '</select>'."\n";
1549:
1550: $r->print( $Ptr );
1551: $r->rflush();
1552: }
1553:
1554:
1555: # ================================================================ Main Handler
1556:
1557: sub handler {
1558: $r=shift;
1559:
1560: if (&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'})) {
1561: # ------------------------------------------- Set document type for header only
1562: if ($r->header_only) {
1563: if ($ENV{'browser.mathml'}) {
1564: $r->content_type('text/xml');
1565: }
1566: else {
1567: $r->content_type('text/html');
1568: }
1569: $r->send_http_header;
1570: return OK;
1571: }
1572: my $requrl=$r->uri;
1573: # ----------------------------------------------------------------- Tie db file
1574:
1575: undef %hash;
1576:
1577: if ($ENV{'request.course.fn'}) {
1578: my $fn=$ENV{'request.course.fn'};
1579: if (-e "$fn.db") {
1580: if (tie(%hash,'GDBM_File',"$fn.db",&GDBM_READER,0640)) {
1581: # ------------------------------------------------------------------- Hash tied
1582: $r->content_type('text/html');
1583: $r->send_http_header;
1584: &Menu();
1585: }
1586: else {
1587: $r->content_type('text/html');
1588: $r->send_http_header;
1589: $r->print('<html><body>Coursemap undefined.</body></html>');
1590: }
1591: # ------------------------------------------------------------------ Untie hash
1592: unless (untie(%hash)) {
1593: &Apache::lonnet::logthis("<font color=blue>WARNING: ".
1594: "Could not untie coursemap $fn (browse).</font>");
1595: }
1596:
1597: # -------------------------------------------------------------------- All done
1598: return OK;
1599: # ----------------------------------------------- Errors, hash could no be tied
1600: }
1601: }
1602: else {
1603: $ENV{'user.error.msg'}="$requrl:bre:0:0:Course not initialized";
1604: return HTTP_NOT_ACCEPTABLE;
1605: }
1606: }
1607: else {
1608: $ENV{'user.error.msg'}=
1609: $r->uri.":vgr:0:0:Cannot view grades for complete course";
1610:
1611: return HTTP_NOT_ACCEPTABLE;
1612: }
1613: }
1614: 1;
1615: __END__
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