1: # The LearningOnline Network with CAPA
2: # (Publication Handler
3: #
4: # $Id: lonstatistics.pm,v 1.15 2002/05/13 13:50:45 minaeibi Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: # (Navigate problems for statistical reports
29: # YEAR=2001
30: # 5/5,7/9,7/25/1,8/11,9/13,9/26,10/5,10/9,10/22,10/26 Behrouz Minaei
31: # 11/1,11/4,11/16,12/14,12/16,12/18,12/20,12/31 Behrouz Minaei
32: # YEAR=2002
33: # 1/22,2/1,2/6,2/25,3/2,3/6,3/17,3/21,3/22,3/26,4/7,5/6,5/12 Behrouz Minaei
34: #
35: ###
36:
37: package Apache::lonstatistics;
38:
39: use strict;
40: use Apache::Constants qw(:common :http);
41: use Apache::lonnet();
42: use Apache::lonhomework;
43: use Apache::loncommon;
44: use HTML::TokeParser;
45: use GDBM_File;
46:
47: # -------------------------------------------------------------- Module Globals
48: my %hash;
49: my %CachData;
50: my %GraphDat;
51: my %OpResp;
52: my %maps;
53: my %mapsort;
54: my %section;
55: my %StuBox;
56: my %DiscFac;
57: my %DisUp;
58: my %DisLow;
59: my $UpCnt;
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;
77: my $DiscFlag;
78: my $HWN;
79: my $P_Order;
80: my %foil_to_concept;
81: my @Concepts;
82: my %ConceptData;
83: my %Header = (0,"Homework Sets Order",1,"#Stdnts",2,"Tries",3,"Mod",
84: 4,"Mean",5,"#YES",6,"#yes",7,"%Wrng",8,"DoDiff",
85: 9,"S.D.",10,"Skew.",11,"D.F.1st",12,"D.F.2nd");
86: my %Answer = ();
87: my @shown;
88:
89: sub InitAnalysis {
90: my ($rid, $student)=@_;
91: my ($uname,$udom)=split(/\:/,$student);
92: $rid=~/(\d+)\.(\d+)/;
93: my $symb=&Apache::lonnet::declutter($hash{'map_id_'.$1}).'___'.$2.'___'.
94: &Apache::lonnet::declutter($hash{'src_'.$rid});
95: my $URI = $hash{'src_'.$rid};
96: my $Answ=&Apache::lonnet::ssi($URI,('grade_target' => 'analyze',
97: 'grade_username' => $uname,
98: 'grade_domain' => $udom,
99: 'grade_courseid' => $cid,
100: 'grade_symb' => $symb));
101: # my $Answ=&Apache::lonnet::ssi($URI,('grade_target' => 'analyze'));
102:
103: (my $garbage,$Answ)=split(/_HASH_REF__/,$Answ,2);
104: %Answer=();
105: %Answer=&Apache::lonnet::str2hash($Answ);
106:
107: my $parts='';
108: foreach my $elm (@{$Answer{"parts"}}) {
109: $parts.="$elm,";
110: }
111: chop($parts);
112: my $conc='';
113: foreach my $elm (@{$Answer{"$parts.concepts"}}) {
114: $conc.="$elm@";
115: }
116: chop($conc);
117:
118: @Concepts=split(/\@/,$conc);
119: my $show='';
120: foreach my $elm (@{$Answer{"$parts.shown"}}) {
121: $show.="$elm@";
122: }
123: chop($show);
124: @shown=split(/\@/,$show);
125: # $r->print("<br> shown:".$show);
126: # $r->rflush();
127:
128: foreach my $concept (@{$Answer{"$parts.concepts"}}) {
129: foreach my $foil (@{$Answer{"$parts.concept.$concept"}}) {
130: $foil_to_concept{$foil} = $concept;
131: }
132: }
133: return $symb;
134: }
135:
136:
137: sub Interval {
138: my $symb=shift;
139: my $Int=$ConceptData{"Interval"};
140: my $due = &Apache::lonnet::EXT('resource.0.duedate',$symb)+1;
141: my $opn = &Apache::lonnet::EXT('resource.0.opendate',$symb);
142: my $add=int(($due-$opn)/$Int);
143: # $r->print("<br> $opn, to $due add=$add int=$Int");
144: #$r->rflush();
145: $ConceptData{"Int.0"}=$opn;
146: for (my $i=1;$i<$Int;$i++) {
147: $ConceptData{"Int.$i"}=$opn+$i*$add;
148: }
149: $ConceptData{"Int.$Int"}=$due;
150: for (my $i=0;$i<$Int;$i++) {
151: for (my $n=0; $n<=$#Concepts; $n++ ) {
152: my $tmp=$Concepts[$n];
153: $ConceptData{"$tmp.$i.true"}=0;
154: $ConceptData{"$tmp.$i.false"}=0;
155: }
156: }
157: }
158:
159:
160: sub ShowOpGraph {
161:
162: my ($InpStr, $Int_No)=@_;
163:
164: $r->print(<<ENDPOP);
165: <script language="JavaScript">
166:
167: function display(name) {
168: document.forms.displayform.elements.dis.value=name;
169: window.status=name;
170: }
171: function cleardisplay() {
172: document.forms.displayform.elements.dis.value='';
173: window.status='No Concept in particular';
174: }
175:
176: </script>
177: ENDPOP
178:
179: &Create_PrgWin();
180: &Update_PrgWin("Starting to analyze problem");
181: my $rid=substr($InpStr,8);
182: $ConceptData{"Interval"}=$Int_No;
183: &Interval(&InitAnalysis($rid,$students[0]));
184: my $URI = $hash{'src_'.$rid};
185: my $Src = $hash{'title_'.$rid};
186: $Src =~ s/\ /"_"/eg;
187: $r->print('<br><b>'.$URI.'</b>');
188: for (my $n=1; $n<=$#Concepts+1; $n++ ) {
189: my $tmp=$Concepts[$n-1];
190: $tmp =~ s/</" less than "/eg;
191: $r->print("<br><b>Concept $n</b>:$tmp");
192: }
193:
194: $r->rflush();
195:
196: for (my $index=0;$index<=$#students;$index++) {
197: &Update_PrgWin($index);
198: &OpStatus($rid,$students[$index]);
199: }
200: &Close_PrgWin();
201:
202: #$Apache::lonxml::debug=1;
203: #&Apache::lonhomework::showhash(%ConceptData);
204: #$Apache::lonxml::debug=0;
205:
206: for (my $k=0; $k<$Int_No; $k++ ) {
207: my $data1='';
208: my $data2='';
209: &DrawGraph(&AdjustData($k).'+'.$Src.'+'.($k+1));
210: }
211: my $Answ=&Apache::lonnet::ssi($URI);
212: $r->print("<br><b>Here you can see the Problem:</b><br>$Answ");
213: }
214:
215: sub AdjustData {
216: my $k=shift;
217: my $Max=0;
218: my @data1;
219: my @data2;
220: for (my $n=0; $n<=$#Concepts; $n++ ) {
221: my $tmp=$Concepts[$n];
222: $data1[$n]=$ConceptData{"$tmp.$k.true"};
223: $data2[$n]=$ConceptData{"$tmp.$k.false"};
224: my $Sum=$data1[$n]+$data2[$n];
225: if ( $Max<$Sum ) {$Max=$Sum;}
226: }
227: for (my $n=0; $n<=$#Concepts; $n++ ) {
228: if ($data1[$n]+$data2[$n]<$Max) {
229: $data2[$n]+=$Max-($data1[$n]+$data2[$n]);
230: }
231: }
232: return join(',',@data1).'+'.
233: join(',',@data2).'+'.
234: $Max.'+'.($#data1+1);
235: }
236:
237:
238: sub DrawGraph {
239: my $data=shift;
240: my($data1,$data2,$Max,$P_No,$Src,$k)=split(/\+/,$data);
241:
242: my $Str="\n".'<table border=1>'.
243: "\n".'<tr>'.
244: "\n".'<th> Correct Answers </th>'.
245: "\n".'<th> Wrong Answers </th>'.
246: "\n".'<th> From </th>'.
247: "\n".'<th> To </th>'.
248: "\n".'</tr>'.
249: "\n"."<tr>".
250: "\n"."<td> $data1 </td>".
251: "\n"."<td> $data2 </td>".
252: "\n"."<td> ".localtime($ConceptData{'Int.'.($k-1)})." </td>".
253: "\n"."<td> ".localtime($ConceptData{'Int.'.$k}-1)." </td>".
254: "\n"."</tr></table>";
255: $r->print($Str);
256:
257: # $r->print('<br><b>Correct Answers:</b> '.$data1.
258: # '<br><b>Wrong Answers: </b>'.$data2);
259: # $r->print('<br><b>From: </b>'.localtime($ConceptData{'Int.'.($k-1)}).
260: # '<br><b>To: </b>'.localtime($ConceptData{"Int.$k"}));
261:
262: # if ( $Max > 1 ) {
263: # $Max += (10 - $Max % 10);
264: # $Max = int($Max);
265: # }
266: # else { $Max = 1; }
267: my $Titr=($ConceptData{'Interval'}>1) ? $Src.'_interval_'.$k : $Src;
268: $GData=$Titr.'&'.'Answers'.'&'.$Max.'&'.$P_No.'&'.$data1.'&'.$data2;
269: if($ConceptData{'Interval'}>1){
270: $r->print('<br><IMG src="/cgi-bin/graph.gif?'.$GData.'" />');
271: return;
272: }
273: $r->print('<br>Move your mouse over a bar to find out the concept');
274: my $ptr='';
275: $ptr.="\n".'<form method="post" action="" name="displayform"> <input type=text name="dis" size=80> </form>';
276: $ptr.="\n".'<p><img src=/cgi-bin/graph.gif?'.$GData.
277: ' usemap="#Map" border=1>'.
278: "\n".'<map name="Map">';
279: my $gap=12;
280: my $Size=340;
281: my $barsize=($P_No) ? int($Size/$P_No) : 1;
282: for (my $i=0; $i<$P_No; $i++) {
283: my $x1=80+$gap*$i+($i*$barsize);
284: my $x2=$x1+$barsize;
285: my $y1=25;
286: my $y2=350;
287: my $j=$i+1;
288: $ptr.="\n".'<area shape="rect" coords='.$x1.','.$y1.','.$x2.','.$y2.' onMouseOver="display('."'Concept $j: $Concepts[$i]'".'); " href="javascript:alert('."'Concept $j: $Concepts[$i]'".');">';
289: }
290: $ptr.="\n".'<area shape="default" onMouseOver="cleardisplay(); " href="javascript:alert('.'No Concept in particular'.');">';
291: $ptr.="\n".'</map></p>';
292: $r->print('<br>'.$ptr.'<br>');
293: }
294:
295:
296: sub AnalyzeProblem {
297: # -------------------------------- Selecting the number of intervals
298: my $OpSel='';
299: my $CurInt = $ENV{'form.interval'};
300: if ($CurInt eq '') {$CurMap = '1';}
301: my $Ptr = '<b>Select number of intervals</b>'."\n".
302: '<select name="interval">'."\n";
303: for (my $n=1;$n<=7;$n++) {
304: $Ptr .= '<option';
305: if ($CurInt eq $n) {$Ptr .= ' selected';}
306: $Ptr .= '>'.$n."</option>"."\n";
307: }
308: $Ptr .= '</select>'."\n";
309: $r->print( $Ptr );
310:
311: $r->print('<br><b> Option Response Problems in this course:</b><br><br>');
312: my $Str = "\n".'<table border=2>'.
313: "\n".'<tr>'.
314: "\n".'<th> # </th>'.
315: "\n".'<th> Problem Title </th>'.
316: "\n".'<th> Resouse </th>'.
317: "\n".'<th> Address </th>'.
318: "\n".'</tr>';
319:
320: my $P_No=1;
321: foreach (sort keys %OpResp) {
322: my $Temp = '<a href="'.$hash{'src_'.$OpResp{$_}}.
323: '" target="_blank">'.$hash{'title_'.$OpResp{$_}}.'</a>';
324: $Str .= "\n"."<tr>".
325: "\n"."<td> $P_No </td>".
326: "\n"."<td bgcolor=#DDFFDD> ".$Temp." </td>".
327: "\n"."<td bgcolor=#EEFFCC> ".$hash{'src_'.$OpResp{$_}}." </td>".
328: "\n"."<td> ".'<input type="submit" name="sort" value="'.'Analyze_'.$OpResp{$_}.'" />'.'</td>'.
329: "\n"."</tr>";
330: $P_No++;
331: }
332: $Str .= "\n".'</table>';
333: $Str .= "\n".'</form>';
334: $r->print($Str);
335: $r->rflush();
336: }
337:
338:
339: sub Decide {
340: my ($type,$foil,$time)=@_;
341: my $k=0;
342: while ($time>$ConceptData{'Int.'.($k+1)} &&
343: $k<$ConceptData{'Interval'}) {$k++;}
344: $ConceptData{"$foil_to_concept{$foil}.$k.$type"}++;
345: }
346:
347:
348: sub OpStatus {
349: my ($rid,$student)=@_;
350: my ($uname,$udom)=split(/\:/,$student);
351: my $code='U';
352: $rid=~/(\d+)\.(\d+)/;
353: my $symb=&Apache::lonnet::declutter($hash{'map_id_'.$1}).'___'.$2.'___'.
354: &Apache::lonnet::declutter($hash{'src_'.$rid});
355: my %reshash=&Apache::lonnet::restore($symb,$cid,$udom,$uname);
356: my @True = ();
357: my @False = ();
358: my $flag=0;
359: @shown=();
360: if ($reshash{'version'}) {
361: for (my $version=1;$version<=$reshash{'version'};$version++) {
362: my $time=$reshash{"$version:timestamp"};
363: foreach (sort(split(/\:/,$reshash{$version.':keys'}))) {
364: if (($_=~/\.(\w+)\.(\w+)\.submission$/)) {
365: my $Id1 = $1;
366: my $Id2 = $2;
367: my $Resp = $reshash{$_};
368: my %submission=&Apache::lonnet::str2hash($Resp);
369: foreach (keys %submission) {
370: my $Ansr = $Answer{"$Id1.$Id2.foil.value.$_"};
371: #$r->print("<br>shown: ".join(',',@shown)." size=$#shown");
372: if ($submission{$_}) {
373: #if($#shown==-1){
374: #my @str=split(/\&/,$Resp);
375: #my $garb;
376: #for(my $j=0;$j<=$#str;$j++){
377: # ($shown[$j],$garb)=split(/\=/,$str[$j]);
378: #}
379: ##$r->print("<br>shown: ".join(',',@shown)." size=$#shown");
380: #}
381: if ($submission{$_} eq $Ansr) {
382: &Decide("true",$_,$time );
383: }
384: else {&Decide("false",$_,$time );}
385: }
386: #else {
387: # if ($#shown==-1 && $flag==0) {
388: # $flag++;
389: # &InitAnalysis($rid,$student);
390: # }
391: # my @erl=split(/\:/,$_);
392: # for (my $i=0;$i<=$#shown; $i++){
393: # my $Ans=$Answer{"$Id1.$Id2.foil.value.$shown[$i]"};
394: # if ($erl[$i] eq $Ans) {
395: # &Decide("true",$shown[$i],$time);
396: # }
397: # else {&Decide("false",$shown[$i],$time);}
398: # }
399: #}
400: }
401: }
402: }
403: }
404: }
405: }
406:
407:
408: #------- Processing upperlist and lowerlist according to each problem
409: sub ProcessDisc {
410: my @List = @_;
411: @List = sort (@List);
412: my $Count = $#List+1;
413: my $Prb;
414: my @Dis;
415: my $Slvd=0;
416: my $tmp;
417: my $Sum1=0;
418: my $Sum2=0;
419: my $nIdx=0;
420: my $nStud=0;
421: my %Proc;
422: undef %Proc;
423: while ($nIdx<$Count) {
424: ($Prb,$tmp)=split(/\=/,$List[$nIdx]);
425: @Dis=split(/\+/,$tmp);
426: my $Temp = $Prb;
427: do {
428: $nIdx++;
429: $nStud++;
430: $Sum1 += $Dis[0];
431: $Sum2 += $Dis[1];
432: ($Prb,$tmp)=split(/\=/,$List[$nIdx]);
433: @Dis=split(/\+/,$tmp);
434: } while ( $Prb eq $Temp && $nIdx < $Count );
435: # $Proc{$Temp}=($Sum1/$nStud).':'.$nStud;
436: $Proc{$Temp}=($Sum1/$nStud).':'.($Sum2/$nStud);
437: # $r->print("$nIdx) $Temp --> ($nStud) $Proc{$Temp} <br>");
438: $Sum1=0;
439: $Sum2=0;
440: $nStud=0;
441: }
442: return %Proc;
443: }
444:
445:
446: #------- Creating Discimination factor
447: sub Discriminant {
448: my $Count=0;
449: foreach (keys(%DiscFac)){
450: $Count++;
451: }
452: $UpCnt = int(0.27*$Count);
453: my $low=0;
454: my $up=$Count-$UpCnt;
455: my @UpList=();
456: my @LowList=();
457: $Count=0;
458: foreach my $key (sort(keys(%DiscFac))){
459: $Count++;
460: #$r->print("<br>$Count) $key = $DiscFac{$key}");
461: if ($low < $UpCnt || $Count > $up) {
462: $low++;
463: my $str=$DiscFac{$key};
464: foreach(split(/\:/,$str)){
465: if ($_) {
466: if ($low<$UpCnt){push(@LowList,$_);}
467: else {push(@UpList,$_);}
468: }
469: }
470: }
471: }
472: %DisUp=&ProcessDisc(@UpList);
473: %DisLow=&ProcessDisc(@LowList);
474: }
475:
476:
477: sub NumericSort {
478: $a <=> $b;
479: }
480:
481: # ------ Create different Student Report
482: sub StudentReport {
483: my ($sname,$sdom)=@_;
484: if ( $sname eq 'All Students' ) {
485: $r->print( '<h3><font color=blue>WARNING:
486: Please select a student</font></h3>' );
487: return;
488: }
489: my %result = &Apache::lonnet::dump($cid,$sdom,$sname);
490: my $ResId;
491: my $PrOrd;
492: my $Code;
493: my $Tries;
494: my $TotalTries = 0;
495: my $ParCr = 0;
496: my $Wrongs;
497: my %TempHash;
498: my $Version;
499: my $LatestVersion;
500: my $PtrTry='';
501: my $PtrCod='';
502: my $SetNo=0;
503: my $Str = "\n".'<table border=2>'.
504: "\n".'<tr>'.
505: "\n".'<th> # </th>'.
506: "\n".'<th> Set Title </th>'.
507: "\n".'<th> Results </th>'.
508: "\n".'<th> Tries </th>'.
509: "\n".'</tr>';
510: my ($temp)=keys(%result);
511: unless ($temp=~/^error\:/) {
512: foreach my $CurCol (@cols) {
513: if (!$CurCol){
514: my $Set=&Apache::lonnet::declutter($hash{'map_id_'.$1});
515: if ( $Set ) {
516: $SetNo++;
517: $Str .= "\n"."<tr>".
518: "\n"."<td> $SetNo </td>".
519: "\n"."<td> $Set </td>".
520: "\n"."<td> $PtrCod </td>".
521: "\n"."<td> $PtrTry</td>".
522: "\n"."</tr>";
523: }
524: $PtrTry='';
525: $PtrCod='';
526: next;
527: }
528: ($PrOrd,$ResId)=split(/\:/,$CurCol);
529: $ResId=~/(\d+)\.(\d+)/;
530: my $Map = &Apache::lonnet::declutter( $hash{'map_id_'.$1} );
531: if ( $CurMap ne 'All Maps' ) {
532: my ( $ResMap, $NameMap ) = split(/\=/,$CurMap);
533: if ( $Map ne $ResMap ) { next; }
534: }
535: my $meta=$hash{'src_'.$ResId};
536: my $PartNo = 0;
537: undef %TempHash;
538: foreach (split(/\,/,&Apache::lonnet::metadata($meta,'keys'))){
539: if ($_=~/^stores\_(\w+)\_tries$/) {
540: my $Part=&Apache::lonnet::metadata($meta,$_.'.part');
541: if ( $TempHash{"$Part"} eq '' ) {
542: $TempHash{"$Part"} = $Part;
543: $TempHash{$PartNo}=$Part;
544: $TempHash{"$Part.Code"} = '-';
545: $TempHash{"$Part.PrOrd"} = $PrOrd+$PartNo;
546: $PartNo++;
547: }
548: }
549: }
550:
551: my $Prob = $Map.'___'.$2.'___'.
552: &Apache::lonnet::declutter( $hash{'src_'.$ResId} );
553: $Code='U';
554: $Tries = 0;
555: $Wrongs = 0;
556: $LatestVersion = $result{"version:$Prob"};
557: if ( $LatestVersion ) {
558: for ( my $Version=1; $Version<=$LatestVersion; $Version++ ) {
559: my $vkeys = $result{"$Version:keys:$Prob"};
560: my @keys = split(/\:/,$vkeys);
561:
562: foreach my $Key (@keys) {
563: if (($Key=~/\.(\w+)\.solved$/) && ($Key!~/^\d+\:/)) {
564: my $Part = $1;
565: $Tries = $result{"$Version:$Prob:resource.$Part.tries"};
566: $TempHash{"$Part.Tries"} = ($Tries) ? $Tries : 0;
567: $TotalTries += $Tries;
568: my $Val = $result{"$Version:$Prob:resource.$Part.solved"};
569: if ( $Val eq 'correct_by_student' )
570: { $Wrongs = $Tries - 1; $Code = 'Y'; }
571: elsif ( $Val eq 'correct_by_override' )
572: { $Wrongs = $Tries - 1; $Code = 'y'; }
573: elsif ( $Val eq 'incorrect_attempted' ||
574: $Val eq 'incorrect_by_override' )
575: { $Wrongs = $Tries; $Code = 'N'; }
576: $TempHash{"$Part.Code"} = $Code;
577: $TempHash{"$Part.Wrongs"} = $Wrongs;
578: }
579: }
580: }
581: for ( my $n = 0; $n < $PartNo; $n++ ) {
582: my $part = $TempHash{$n};
583: if ($PtrTry ne '') {$PtrTry .= ',';}
584: $PtrTry .= "$TempHash{$part.'.Tries'}";
585: $PtrCod .= "$TempHash{$part.'.Code'}";
586: }
587: }
588: else {
589: for(my $n=0; $n<$PartNo; $n++) {
590: if ($PtrTry ne '') {$PtrTry .= ',';}
591: $PtrTry .= "0";
592: $PtrCod .= "-";
593: }
594: }
595: }
596: }
597: $Str .= "\n".'</table>';
598: $r->print($Str);
599: $r->rflush();
600: }
601:
602: sub CreateTable {
603: my $ColNo=0;
604: foreach (keys(%Header)){
605: $ColNo++;
606: }
607: my ($Hd, $Hid)=@_;
608: if ( $Hd == 1 ) {
609: $r->print('<br><a href="'.$hash{'src_'.$Hid}.
610: '" target="_blank">'.$hash{'title_'.$Hid}.'</a>');
611: }
612: my $Result = "\n".'<table border=2>';
613: $Result .= '<tr><th>P#</th>'."\n";
614: for ( my $nIdx=0; $nIdx < $ColNo; $nIdx++ ) {
615: $Result .= '<th>'.'<input type="submit" name="sort" value="'.
616: $Header{$nIdx}.'" />'.'</th>'."\n";
617: }
618: $Result .= "\n".'</tr>'."\n";
619: $r->print( $Result );
620: $r->rflush();
621: }
622:
623: sub CloseTable {
624: $r->print("\n".'</table>'."\n");
625: $r->rflush();
626: }
627:
628: # ------------------------------------------- Prepare Statistics Table
629: sub PreStatTable {
630: my $CacheDB = "/home/httpd/perl/tmp/$ENV{'user.name'}".
631: "_$ENV{'user.domain'}_$cid\_statistics.db";
632: my $GraphDB = "/home/httpd/perl/tmp/$ENV{'user.name'}".
633: "_$ENV{'user.domain'}_$cid\_graph.db";
634: my $OpSel11='';
635: my $OpSel12='';
636: my $OpSel13='';
637: my $Status = $ENV{'form.status'};
638: if ( $Status eq 'Any' ) { $OpSel13='selected'; }
639: elsif ($Status eq 'Expired' ) { $OpSel12 = 'selected'; }
640: else { $OpSel11 = 'selected'; }
641:
642: my $Ptr = '';
643: $Ptr .= '<br><b> Student Status: </b>'."\n".
644: '<select name="status">'.
645: '<option '.$OpSel11.' >Active</option>'."\n".
646: '<option '.$OpSel12.' >Expired</option>'."\n".
647: '<option '.$OpSel13.' >Any</option> </select> '."\n";
648: $Ptr .= ' ';
649: $Ptr .= '<input type=submit name=sort value="Recalculate Statistics"/>'."\n";
650:
651: $Ptr .= '<br><b> Sorting Type: </b>'."\n".
652: '<select name="order"> <option '.$OpSel1.' >Ascending</option>'."\n".
653: '<option '.$OpSel2.'>Descending</option> </select> '."\n";
654: $Ptr .= ' ';
655: $Ptr .= '<input type="submit" name="sort" value="DoDiff Graph" />'."\n";
656: $Ptr .= ' ';
657: $Ptr .= '<input type="submit" name="sort" value="%Wrong Graph" />'."\n";
658:
659: $Ptr .= '<pre>'.
660: '<b> #Stdnts</b>: Total Number of Students opened the problem.<br>'.
661: '<b> Tries </b>: Total Number of Tries for solving the problem.<br>'.
662: '<b> Mod </b> : Maximunm Number of Tries for solving the problem.<br>'.
663: '<b> Mean </b>: Average Number of the tries. [ Tries / #Stdnts ]<br>'.
664: '<b> #YES </b>: Number of students solved the problem correctly.<br>'.
665: '<b> #yes </b>: Number of students solved the problem by override.<br>'.
666: '<b> %Wrng </b>: Percentage of students tried to solve the problem but'.
667: ' still incorrect. [ 100*((#Stdnts-(#YES+#yes))/#Stdnts) ]<br>'.
668: # ' DoDiff : Degree of Difficulty of the problem. [ Tries/(#YES+#yes+0.1) ]<br>'. Kashy formula
669: '<b> DoDiff </b>: Degree of Difficulty of the problem. [ 1 - ((#YES+#yes) / Tries) ]<br>'. #Gerd formula
670: '<b> S.D. </b> : Standard Deviation of the tries.'.
671: '[ sqrt(sum((Xi - Mean)^2)) / (#Stdnts-1)'.
672: ' where Xi denotes every student\'s tries ]<br>'.
673: '<b> Skew. </b>: Skewness of the students tries.'.
674: ' [ (sqrt( sum((Xi - Mean)^3) / #Stdnts)) / (S.D.^3) ]<br>'.
675: '<b> Dis.F. </b>: Discrimination Factor: A Standard for '.
676: 'evaluating the problem according to a Criterion<br>'.
677: '<b> [Applied Criterion in %27 Upper Students - '.
678: 'Applied the same Criterion in %27 Lower Students]</b><br>'.
679: '<b> 1st Criterion</b> for Sorting the Students: '.
680: '<b>Sum of Partial Credit Awarded / Total Number of Tries</b><br>'.
681: '<b> 2nd Criterion</b> for Sorting the Students: '.
682: '<b>Total number of Correct Answers / Total Number of Tries</b>'.
683: '</pre>';
684:
685: $r->print($Ptr);
686: $r->rflush();
687:
688: if ((-e "$CacheDB")&&($ENV{'form.sort'} ne 'Recalculate Statistics')) {
689: if (tie(%CachData,'GDBM_File',"$CacheDB",&GDBM_READER,0640)) {
690: tie(%GraphDat,'GDBM_File',$GraphDB,&GDBM_WRCREAT,0640);
691: &Cache_Statistics();
692: }
693: else {
694: $r->print("Unable to tie hash to db file");
695: }
696: }
697: else {
698: if (tie(%CachData,'GDBM_File',$CacheDB,&GDBM_WRCREAT,0640)) {
699: tie(%GraphDat,'GDBM_File',$GraphDB,&GDBM_WRCREAT,0640);
700: foreach (keys %DiscFac) {delete $CachData{$_};}
701: foreach (keys %CachData) {delete $CachData{$_};}
702: $DiscFlag=0;
703: &Build_Statistics();
704: }
705: else {
706: $r->print("Unable to tie hash to db file");
707: }
708: }
709:
710: # $r->print('Total instances of the problems : '.($p_count*($#students+1)));
711: untie(%CachData);
712: untie(%GraphDat);
713: }
714:
715:
716: # ------------------------------------- Find the section of student in a course
717:
718: sub usection {
719: my ($udom,$unam,$courseid,$ActiveFlag)=@_;
720: $courseid=~s/\_/\//g;
721: $courseid=~s/^(\w)/\/$1/;
722: foreach (split(/\&/,&Apache::lonnet::reply('dump:'.
723: $udom.':'.$unam.':roles',
724: &Apache::lonnet::homeserver($unam,$udom)))){
725: my ($key,$value)=split(/\=/,$_);
726: $key=&Apache::lonnet::unescape($key);
727: if ($key=~/^$courseid(?:\/)*(\w+)*\_st$/) {
728: my $section=$1;
729: if ($key eq $courseid.'_st') { $section=''; }
730: my ($dummy,$end,$start)=split(/\_/,&Apache::lonnet::unescape($value));
731: if ( $ActiveFlag ne 'Any' ) {
732: my $now=time;
733: my $notactive=0;
734: if ($start) {
735: if ($now<$start) { $notactive=1; }
736: }
737: if ($end) {
738: if ($now>$end) { $notactive=1; }
739: }
740: if ((($ActiveFlag eq 'Expired') && $notactive == 1) ||
741: (($ActiveFlag eq 'Active') && $notactive == 0 ) ) {
742: return $section;
743: }
744: else { return '-1'; }
745: }
746: return $section;
747: }
748: }
749: return '-1';
750: }
751:
752:
753: # ------ Dump the Student's DB file and handling the data for statistics table
754: sub ExtractStudentData {
755: my $student=shift;
756: my ($sname,$sdom) = split( /\:/, $student );
757: my %result = &Apache::lonnet::dump($cid,$sdom,$sname);
758: my $ResId;
759: my $PrOrd;
760: my $Dis = '';
761: my $Code;
762: my $Tries;
763: my $ParCr;
764: my $TotalTries = 0;
765: my $TotalOpend = 0;
766: my $ProbSolved = 0;
767: my $ProbTot = 0;
768: my $TimeTot = 0;
769: my $TotParCr = 0;
770: my $Wrongs;
771: my %TempHash;
772: my $Version;
773: my $LatestVersion;
774: my $SecLimit;
775: my $MapLimit;
776: my ($temp)=keys(%result);
777: unless ($temp=~/^error\:/) {
778: foreach my $CurCol(@cols) {
779: ($PrOrd,$ResId)=split(/\:/,$CurCol);
780: if ( !$CurCol ) { next; }
781: $ResId=~/(\d+)\.(\d+)/;
782: my $MapId=$1;
783: my $PrbId=$2;
784: my $MapOrg = $hash{'map_id_'.$MapId};
785: my $Map = &Apache::lonnet::declutter($MapOrg);
786: if ( $CurMap ne 'All Maps' ) {
787: my ( $ResMap, $NameMap ) = split(/\=/,$CurMap);
788: if ( $Map ne $ResMap ) { next; }
789: }
790: my $meta=$hash{'src_'.$ResId};
791: my $PartNo = 0;
792: $Dis .= ':';
793: undef %TempHash;
794:
795: foreach (split(/\,/,&Apache::lonnet::metadata($meta,'keys'))) {
796: if ($_=~/^stores\_(\w+)\_tries$/) {
797: my $Part=&Apache::lonnet::metadata($meta,$_.'.part');
798: if ( $TempHash{"$Part"} eq '' ) {
799: $TempHash{"$Part"} = $Part;
800: $TempHash{$PartNo}=$Part;
801: $TempHash{"$Part.Code"} = 'U';
802: $TempHash{"$Part.PrOrd"} = $PrOrd+$PartNo;
803: $PartNo++;
804: }
805: #my $Part=&Apache::lonnet::metadata($meta,$_.'.part');
806: }
807: }
808: &Apache::lonnet::declutter( $hash{'src_'.$ResId} );
809: my $URI = $hash{'src_'.$ResId};
810: my $Prob = $Map.'___'.$PrbId.'___'.
811: &Apache::lonnet::declutter($URI);
812: $Code='U';
813: $Tries = 0;
814: $ParCr = 0;
815: $Wrongs = 0;
816: $LatestVersion = $result{"version:$Prob"};
817: if ( $LatestVersion ) {
818: for ( my $Version=1; $Version<=$LatestVersion; $Version++ ) {
819: my $vkeys = $result{"$Version:keys:$Prob"};
820: my @keys = split(/\:/,$vkeys);
821: foreach my $Key (@keys) {
822: if (($Key=~/\.(\w+)\.solved$/) && ($Key!~/^\d+\:/)) {
823: my $Part = $1;
824: $Tries = $result{"$Version:$Prob:resource.$Part.tries"};
825: $ParCr = $result{"$Version:$Prob:resource.$Part.awarded"};
826: my $Time = $result{"$Version:$Prob:timestamp"};
827: $TempHash{"$Part.Time"} = ($Time) ? $Time : 0;
828: $TempHash{"$Part.Tries"} = ($Tries) ? $Tries : 0;
829: $TempHash{"$Part.ParCr"} = ($ParCr) ? $ParCr : 0;
830: $TotalTries += $TempHash{"$Part.Tries"};
831: $TotParCr += $TempHash{"$Part.ParCr"};
832: my $Val = $result{"$Version:$Prob:resource.$Part.solved"};
833: if ( $Val eq 'correct_by_student' )
834: { $Wrongs = $Tries - 1; $Code = 'C'; }
835: elsif ( $Val eq 'correct_by_override' )
836: { $Wrongs = $Tries - 1; $Code = 'O'; }
837: elsif ( $Val eq 'incorrect_attempted' ||
838: $Val eq 'incorrect_by_override' )
839: { $Wrongs = $Tries; $Code = 'I'; }
840: $TempHash{"$Part.Code"} = $Code;
841: $TempHash{"$Part.Wrongs"} = $Wrongs;
842: }
843: }
844: }
845: for ( my $n = 0; $n < $PartNo; $n++ ) {
846: my $part = $TempHash{$n};
847: my $Yes = 0;
848: if ( $TempHash{$part.'.Code'} eq 'C' ||
849: $TempHash{$part.'.Code'} eq 'O' )
850: {$ProbSolved++;$Yes=1;}
851:
852: # my $ptr = "$hash{'title_'.$ResId}";
853: my $ptr = $TempHash{$part.'.PrOrd'}.'&'.$ResId;
854:
855: if ( $PartNo > 1 ) {
856: $ptr .= "*(part $part)";
857: $Dis .= '&';
858: }
859: my $Fac = ($TempHash{"$part.Tries"}) ?
860: ($TempHash{"$part.ParCr"}/$TempHash{"$part.Tries"}) : 0;
861: my $DisF;
862: if ( $Fac > 0 && $Fac < 1 ) {
863: $DisF = sprintf( "%.4f", $Fac );
864: }
865: else {$DisF = $Fac;}
866: # $DisF .= '+'.$TempHash{"$part.Time"};33333333
867: $TimeTot += $TempHash{"$part.Time"};
868: $Dis .= $TempHash{$part.'.PrOrd'}.'='.$DisF.'+'.$Yes;
869: $ptr .= "&$TempHash{$part.'.Tries'}".
870: "&$TempHash{$part.'.Wrongs'}".
871: "&$TempHash{$part.'.Code'}";
872: push (@list, $ptr);
873: $TotalOpend++;
874: $ProbTot++;
875: }
876: }
877: #else {
878: #for(my $n=0; $n<$PartNo; $n++) {
879: # push (@list, "$TempHash{'0'.'.PrOrd'}.':'.$ResId:0:0:U");
880: # $ProbTot++;
881: #}
882: #}
883: }
884: if ( $TotalTries ) {
885: my $DisFac = ( $TotalTries ) ? ($TotParCr/$TotalTries) : 0;
886: my $DisFactor = sprintf( "%.4f", $DisFac );
887: $DiscFac{$DisFactor}=$Dis;
888: #my $time;
889: #if ($ProbSolved){
890: #$time = int(($TimeTot/$ProbSolved)-10000000);
891: #}
892: #$DiscFac{($DisFactor.':'.$sname.':'.$ProbTot.':'.$TotalOpend.':'.
893: # $TotalTries.':'.$ProbSolved.':'.$time)}=$Dis;
894: }
895: }
896: #$r->print($sname.' PrCr= '.$TotParCr.' Slvd= '.$ProbSolved.' Tries='.$TotalTries.'<br>');
897: }
898:
899:
900: # ------------------------------------------------------------ Build page table
901: sub tracetable {
902: my ($rid,$beenhere)=@_;
903: my $IsMap=0;
904: $rid=~/(\d+)\.(\d+)/;
905: $maps{&Apache::lonnet::declutter($hash{'map_id_'.$1})}='';#$hash{'title_'.$rid};
906: #$maps{$HWN}=$hash{'title_'.$rid};
907: unless ($beenhere=~/\&$rid\&/) {
908: $beenhere.=$rid.'&';
909: if (defined($hash{'is_map_'.$rid})) {
910: my $cmap=$hash{'map_type_'.$hash{'map_pc_'.$hash{'src_'.$rid}}};
911: if ( $cmap eq 'sequence' || $cmap eq 'page' ) {
912: $cols[$#cols+1]=0;
913: $P_Order++;
914: $HWN=$P_Order;
915: $mapsort{$HWN} = $rid.':';
916: $IsMap=1;
917:
918: #$maps{&Apache::lonnet::declutter($hash{'src_'.$rid})}=
919: # $hash{'title_'.$rid};
920: }
921: if ((defined($hash{'map_start_'.$hash{'src_'.$rid}})) &&
922: (defined($hash{'map_finish_'.$hash{'src_'.$rid}}))) {
923: my $frid=$hash{'map_finish_'.$hash{'src_'.$rid}};
924:
925: &tracetable($hash{'map_start_'.$hash{'src_'.$rid}},
926: '&'.$frid.'&');
927:
928: $cols[$#cols+1]=($P_Order+1).':'.$frid;
929:
930: my $meta=$hash{'src_'.$frid};
931: my $PartNo = 0;
932: my $Part;
933: # if ($IsMap==0){
934: if ($meta) {
935: if ($meta=~/\.(problem|exam|quiz|assess|survey|form)$/) {
936: foreach (split(/\,/,&Apache::lonnet::metadata($meta,'keys'))) {
937: if ($_=~/^stores\_(\w+)\_tries$/) {
938: $Part=&Apache::lonnet::metadata($meta,$_.'.part');
939: $P_Order++;
940: $mapsort{$HWN} .= '&'.$P_Order;
941: $PartNo++;
942: #$r->print('<br>'.$PartNo.'---'.$P_Order);
943: }
944: foreach my $K(split(/\,/,&Apache::lonnet::metadata($meta,'packages'))) {
945: if ($K=~/^optionresponse\_($Part)\_(\w+)$/) {
946: #$r->print('<br>'.$_.'...'.$P_Order.'---'.$Part);
947: $OpResp{$P_Order}=$frid;
948: }
949:
950: }
951: }
952: }
953: }
954: }
955: # }
956: } else {
957: $cols[$#cols+1]=($P_Order+1).':'.$rid;
958: my $meta=$hash{'src_'.$rid};
959: my $PartNo = 0;
960: if ($meta) {
961: if ($meta=~/\.(problem|exam|quiz|assess|survey|form)$/) {
962: foreach my $Key(split(/\,/,&Apache::lonnet::metadata($meta,'keys'))) {
963: if ($Key=~/^stores\_(\w+)\_tries$/) {
964: my $Part=&Apache::lonnet::metadata($meta,$Key.'.part');
965: $P_Order++;
966: $mapsort{$HWN} .= '&'.$P_Order;
967: $PartNo++;
968: foreach (split(/\,/,&Apache::lonnet::metadata($meta,'packages'))) {
969: if ($_=~/^optionresponse\_($Part)\_(\w+)$/) {
970: #$r->print('<br>'.$_.'...'.$P_Order.'---'.$Part);
971: $OpResp{$P_Order}=$rid;
972: }
973:
974: }
975:
976: }
977: }
978: }
979: }
980: }
981: if (defined($hash{'to_'.$rid})) {
982: foreach (split(/\,/,$hash{'to_'.$rid})){
983: &tracetable($hash{'goesto_'.$_},$beenhere);
984: }
985: }
986: }
987: }
988:
989: sub MySort {
990: if ( $Pos > 0 ) {
991: if ($ENV{'form.order'} eq 'Descending') {$b <=> $a;}
992: else { $a <=> $b; }
993: }
994: else {
995: if ($ENV{'form.order'} eq 'Descending') {$b cmp $a;}
996: else { $a cmp $b; }
997: }
998: }
999:
1000: sub Create_PrgWin {
1001: #----------- Create progress
1002: $r->print(<<ENDPOP);
1003: <script>
1004: popwin=open('','popwin','width=400,height=100');
1005: popwin.document.writeln('<html><body bgcolor="#88DDFF">'+
1006: '<title>LON-CAPA Statistics</title>'+
1007: '<h4>Computation Progress</h4>'+
1008: '<form name=popremain>'+
1009: '<input type=text size=35 name=remaining value=Starting></form>'+
1010: '</body></html>');
1011: popwin.document.close();
1012: </script>
1013: ENDPOP
1014:
1015: $r->rflush();
1016: }
1017:
1018:
1019: sub Update_PrgWin {
1020: #----------- update progress
1021: my $index = shift;
1022: $r->print('<script>popwin.document.popremain.remaining.value="'.
1023: 'Computing '.($index+1).'/'.($#students+1).': '.
1024: $students[$index].'";</script>');
1025: $r->rflush();
1026: }
1027:
1028: sub Close_PrgWin {
1029: #--------------------- close Progress Line
1030: $r->print('<script>popwin.close()</script>');
1031: $r->rflush();
1032: }
1033:
1034: sub Build_Statistics {
1035: &Create_PrgWin();
1036: # ---------------------------- Gathering the Data of students' tries
1037: for (my $index=0;$index<=$#students;$index++) {
1038: &Update_PrgWin($index);
1039: &ExtractStudentData($students[$index]);
1040: }
1041:
1042: # -------------------- sorting the Data
1043: $r->print('<script>popwin.document.popremain.remaining.value="'.
1044: 'Calculating Discrimination Factors...";</script>');
1045:
1046: @list = sort (@list);
1047:
1048:
1049: &Discriminant();
1050:
1051: $OpSel2='';
1052: $OpSel1='selected';
1053:
1054: $p_count = 0;
1055: my $nIdx = 0;
1056: my $dummy;
1057: my $p_val;
1058: my $ResId;
1059: my $NoElements = $#list + 1;
1060: #-------------------------------- loop for data representation
1061: foreach (sort keys %mapsort) {
1062: my ($Hid,$pr)=split(/\:/,$mapsort{$_});
1063: my @lpr=split(/\&/,$pr);
1064: &CreateTable(1,$Hid);
1065: for (my $i=1; $i<=$#lpr; $i++) {
1066: my %storestats=();
1067: my ($PrOrd,$Prob,$Tries,$Wrongs,$Code)=split(/\&/,$list[$nIdx]);
1068: my $Temp = $Prob;
1069: my $MxTries = 0;
1070: my $TotalTries = 0;
1071: my $YES = 0;
1072: my $Incorrect = 0;
1073: my $Override = 0;
1074: my $StdNo = 0;
1075: my @StdLst;
1076: while ( $PrOrd == $lpr[$i] )
1077: {
1078: $nIdx++;
1079: $StdNo++;
1080: $StdLst[ $StdNo ] = $Tries;
1081: $TotalTries += $Tries;
1082: if ( $MxTries < $Tries ) { $MxTries = $Tries; }
1083: if ( $Code eq 'C' ){ $YES++; }
1084: elsif( $Code eq 'I' ) { $Incorrect++; }
1085: elsif( $Code eq 'O' ) { $Override++; }
1086: elsif( $Code eq 'U' ) { $StdNo--; }
1087: ($PrOrd,$Prob,$Tries,$Wrongs,$Code)=split(/\&/,$list[$nIdx]);
1088: }
1089:
1090: $p_count++;
1091: my $Dummy;
1092: ($ResId,$Dummy)=split(/\*/,$Temp);
1093:
1094: $Temp = '<a href="'.$hash{'src_'.$ResId}.
1095: '" target="_blank">'.$hash{'title_'.$ResId}.$Dummy.'</a>';
1096:
1097: my $res = &Apache::lonnet::declutter($hash{'src_'.$ResId});
1098: my $urlres=$res;
1099:
1100: $ResId=~/(\d+)\.(\d+)/;
1101: my $Map = &Apache::lonnet::declutter( $hash{'map_id_'.$1} );
1102: $urlres=$Map;
1103:
1104: $res = '<a href="'.$hash{'src_'.$ResId}.'">'.$res.'</a>';
1105: #$Map = '<a href="'.$Map.'">'.$res.'</a>';
1106:
1107: #------------------------ Compute the Average of Tries about one problem
1108: my $Average = ($StdNo) ? $TotalTries/$StdNo : 0;
1109:
1110: $storestats{$ENV{'request.course.id'}.'___'.$urlres.'___timestamp'}=time;
1111: $storestats{$ENV{'request.course.id'}.'___'.$urlres.'___stdno'}=$StdNo;
1112: $storestats{$ENV{'request.course.id'}.'___'.$urlres.'___avetries'}=$Average;
1113:
1114: #-------------------------------- Compute percentage of Wrong tries
1115: my $Wrong = ( $StdNo ) ? 100 * ( $Incorrect / $StdNo ) : 0;
1116:
1117: #-------------------------------- Compute Standard Deviation
1118: my $StdDev = 0;
1119: if ( $StdNo > 1 ) {
1120: for ( my $n = 0; $n < $StdNo; $n++ ) {
1121: my $Dif = $StdLst[ $n ]-$Average;
1122: $StdDev += $Dif*$Dif;
1123: }
1124: $StdDev /= ( $StdNo - 1 );
1125: $StdDev = sqrt( $StdDev );
1126: }
1127:
1128: #-------------------------------- Compute Degree of Difficulty
1129: my $DoDiff = 0;
1130: if( $TotalTries > 0 ) {
1131: $DoDiff = 1 - ( ( $YES + $Override ) / $TotalTries );
1132: # $DoDiff = ($TotalTries)/($YES + $Override+ 0.1);
1133: }
1134:
1135: $storestats{$ENV{'request.course.id'}.'___'.$urlres.'___difficulty'}=$DoDiff;
1136:
1137: #-------------------------------- Compute the Skewness
1138: my $Skewness = 0;
1139: my $Sum = 0;
1140: if ( $StdNo > 0 && $StdDev > 0 ) {
1141: for ( my $n = 0; $n < $StdNo; $n++ ) {
1142: my $Dif = $StdLst[ $n ]-$Average;
1143: $Skewness += $Dif*$Dif*$Dif;
1144: }
1145: $Skewness /= $StdNo;
1146: $Skewness /= $StdDev*$StdDev*$StdDev;
1147: }
1148:
1149: #--------------------- Compute the Discrimination Factors
1150: my ($Up1,$Up2)=split(/\:/,$DisUp{$lpr[$i]});
1151: my ($Lw1,$Lw2)=split(/\:/,$DisLow{$lpr[$i]});
1152: my $Dis1 = $Up1 - $Lw1;
1153: my $Dis2 = $Up2 - $Lw2;
1154: my $_D1 = sprintf("%.2f", $Dis1);
1155: my $_D2 = sprintf("%.2f", $Dis2);
1156:
1157: #----------------- Some restition in presenting the float numbers
1158: my $Avg = sprintf( "%.2f", $Average );
1159: my $Wrng = sprintf( "%.1f", $Wrong );
1160: my $SD = sprintf( "%.1f", $StdDev );
1161: my $DoD = sprintf( "%.2f", $DoDiff );
1162: my $Sk = sprintf( "%.1f", $Skewness );
1163: my $join = $lpr[$i].'&'.$Temp.'&'.$StdNo.'&'.
1164: $TotalTries.'&'.$MxTries.'&'.$Avg.'&'.
1165: $YES.'&'.$Override.'&'.$Wrng.'&'.$DoD.'&'.
1166: $SD.'&'.$Sk.'&'.$_D1.'&'.$_D2.'&'.
1167: $Prob;
1168: $CachData{($p_count-1)}=$join;
1169:
1170: $urlres=~/^(\w+)\/(\w+)/;
1171: if ($StdNo) {
1172: &Apache::lonnet::put('resevaldata',\%storestats,$1,$2);
1173: }
1174: #-------------------------------- Row of statistical table
1175: if ( $DiscFlag == 0 ) {
1176: &TableRow($join,$i,($p_count-1));
1177: }
1178: }
1179: &CloseTable();
1180: }
1181: &Close_PrgWin();
1182: }
1183:
1184: sub Cache_Statistics {
1185: my @list = ();
1186: my $Useful;
1187: my $UnUseful;
1188: my %myHeader = reverse( %Header );
1189: $Pos = $myHeader{$ENV{'form.sort'}};
1190: if ($Pos > 0) {$Pos++;}
1191: $p_count = 0;
1192: foreach my $key( keys %CachData) {
1193: my @Temp=split(/\&/,$CachData{$key});
1194: if ( $Pos == 0 ) {
1195: ($UnUseful,$Useful)=split(/\>/,$Temp[$Pos]);
1196: }
1197: else {
1198: $Useful = $Temp[$Pos];
1199: }
1200: $list[$p_count]=$Useful.'@'.$CachData{$key};
1201: $p_count++;
1202: }
1203:
1204: @list = sort MySort (@list);
1205:
1206: my $nIdx=0;
1207:
1208: if ( $Pos == 0 ) {
1209: foreach (sort keys %mapsort) {
1210: my ($Hid,$pr)=split(/\:/,$mapsort{$_});
1211: &CreateTable(1,$Hid);
1212: my @lpr=split(/\&/,$pr);
1213: for (my $i=1; $i<=$#lpr; $i++) {
1214: my($Pre, $Post) = split(/\@/,$list[$nIdx]);
1215: #$r->print('<br>'.$Pre.'---'.$Post);
1216: &TableRow($Post,$i,$nIdx);
1217: $nIdx++;
1218: }
1219: &CloseTable();
1220: }
1221: }
1222: else {
1223: &CreateTable(0);
1224: for ( my $nIdx = 0; $nIdx < $p_count; $nIdx++ ) {
1225: my($Pre, $Post) = split(/\@/,$list[$nIdx]);
1226: &TableRow($Post,$nIdx,$nIdx);
1227: }
1228: &CloseTable();
1229: }
1230: }
1231:
1232: sub TableRow {
1233: my ($Str,$Idx,$RealIdx)=@_;
1234: my($PrOrd,$Temp,$StdNo,$TotalTries,$MxTries,$Avg,$YES,$Override,
1235: $Wrng,$DoD,$SD,$Sk,$_D1,$_D2,$Prob)=split(/\&/,$Str);
1236: my $Ptr = "\n".'<tr>'.
1237: "\n".'<td>'.($RealIdx+1).'</td>'.
1238: # "\n".'<td>'.$PrOrd.$Temp.'</td>'.
1239: "\n".'<td>'.$Temp.'</td>'.
1240: "\n".'<td bgcolor="#EEFFCC"> '.$StdNo.'</td>'.
1241: "\n".'<td bgcolor="#EEFFCC">'.$TotalTries.'</td>'.
1242: "\n".'<td bgcolor="#EEFFCC">'.$MxTries.'</td>'.
1243: "\n".'<td bgcolor="#DDFFFF">'.$Avg.'</td>'.
1244: "\n".'<td bgcolor="#DDFFFF"> '.$YES.'</td>'.
1245: "\n".'<td bgcolor="#DDFFFF"> '.$Override.'</td>'.
1246: "\n".'<td bgcolor="#FFDDDD"> '.$Wrng.'</td>'.
1247: "\n".'<td bgcolor="#FFDDDD">'.$DoD.'</td>'.
1248: "\n".'<td bgcolor="#DDFFDD"> '.$SD.'</td>'.
1249: "\n".'<td bgcolor="#DDFFDD"> '.$Sk.'</td>'.
1250: "\n".'<td bgcolor="#FFDDFF"> '.$_D1.'</td>'.
1251: "\n".'<td bgcolor="#FFDDFF"> '.$_D2.'</td>';
1252: $r->print("\n".$Ptr.'</tr>' );
1253: $GraphDat{$RealIdx}=$DoD.':'.$Wrng;
1254: }
1255:
1256: # ------------------------------------------- Prepare data for Graphical chart
1257:
1258: sub GetGraphData {
1259: my $Tag = shift;
1260: my $Col;
1261: my $data='';
1262: my $count = 0;
1263: my $Max = 0;
1264: my $cid=$ENV{'request.course.id'};
1265: my $GraphDB = "/home/httpd/perl/tmp/$ENV{'user.name'}".
1266: "_$ENV{'user.domain'}_$cid\_graph.db";
1267: foreach (keys %GraphDat) {delete $GraphDat{$_};}
1268: if (-e "$GraphDB") {
1269: if (tie(%GraphDat,'GDBM_File',"$GraphDB",&GDBM_READER,0640)) {
1270: if ( $Tag eq 'DoDiff Graph' ) {
1271: $Tag = 'Degree-of-Difficulty';
1272: $Col = 0;
1273: }
1274: else {
1275: $Tag = 'Wrong-Percentage';
1276: $Col = 1;
1277: }
1278: foreach (sort NumericSort keys %GraphDat) {
1279: my @Temp=split(/\:/,$GraphDat{$_});
1280: my $inf = $Temp[$Col];
1281: if ( $Max < $inf ) {$Max = $inf;}
1282: $data .= $inf.',';
1283: $count++;
1284: }
1285: if ( $Max > 1 ) {
1286: $Max += (10 - $Max % 10);
1287: $Max = int($Max);
1288: }
1289: else { $Max = 1; }
1290: untie(%GraphDat);
1291: my $Course = $ENV{'course.'.$cid.'.description'};
1292: $Course =~ s/\ /"_"/eg;
1293: $GData=$Course.'&'.$Tag.'&'.$Max.'&'.$count.'&'.$data;
1294: }
1295: else {
1296: $r->print("Unable to tie hash to db file");
1297: }
1298: }
1299: }
1300:
1301:
1302: sub initial {
1303: # --------------------------------- Initialize the global varaibles
1304: undef @students;
1305: undef @cols;
1306: undef %maps;
1307: undef %section;
1308: undef %StuBox;
1309: undef @list;
1310: undef %CachData;
1311: undef %GraphDat;
1312: undef %DiscFac;
1313: undef %OpResp;
1314: undef %ConceptData;
1315: undef $CurMap;
1316: undef $CurSec;
1317: undef $CurStu;
1318: undef $p_count;
1319: undef $Pos;
1320: undef $GData;
1321: $DiscFlag=0;
1322: $P_Order=100000;
1323: $HWN=$P_Order;
1324: }
1325:
1326:
1327: sub ClassList {
1328:
1329: &GetStatus();
1330:
1331: $cid=$ENV{'request.course.id'};
1332: my $chome=$ENV{'course.'.$cid.'.home'};
1333: my ($cdom,$cnum)=split(/\_/,$cid);
1334: # ----------------------- Get first and last resource, see if there is anything
1335: $firstres=$hash{'map_start_/res/'.$ENV{'request.course.uri'}};
1336: $lastres=$hash{'map_finish_/res/'.$ENV{'request.course.uri'}};
1337: if (($firstres) && ($lastres)) {
1338: # ----------------------------------------------------------------- Render page
1339: my $classlst=&Apache::lonnet::reply
1340: ('dump:'.$cdom.':'.$cnum.':classlist',$chome);
1341: my $StudNo = 0;
1342: my $now=time;
1343: unless ($classlst=~/^error\:/) {
1344: foreach (sort split(/\&/,$classlst)) {
1345: my ($name,$value)=split(/\=/,$_);
1346: my ($end,$start)=split(/\:/,&Apache::lonnet::unescape($value));
1347: $name=&Apache::lonnet::unescape($name);
1348: my ($sname,$sdom)=split(/\:/,$name);
1349: my $active=1;
1350: my $Status=$ENV{'form.status'};
1351: $Status = ($Status) ? $Status : 'Active';
1352: if ( ( ($end) && $now > $end ) &&
1353: ( ($Status eq 'Active') ) ) { $active=0; }
1354: if ( ($Status eq 'Expired') &&
1355: ($end == 0 || $now < $end) ) { $active=0; }
1356: #//new
1357: # $Status = 'Any';
1358: #end new
1359: if ($active) {
1360: my $thisindex=$#students+1;
1361: $name=&Apache::lonnet::unescape($name);
1362: $students[$thisindex]=$name;
1363: my ($sname,$sdom)=split(/\:/,$name);
1364: #my %reply=&Apache::lonnet::idrget($sdom,$sname);
1365: #my $reply=&Apache::lonnet::reply('get:'.$sdom.':'.$sname.
1366: # ':environment:lastname&generation&firstname&middlename',
1367: # &Apache::lonnet::homeserver($sname,$sdom));
1368: my $ssec=&usection($sdom,$sname,$cid,$Status);
1369: # if ($ssec==-1 ) {next;}
1370: if ($ssec==-1 || $ssec eq 'adm' ) {next;}
1371: $ssec=($ssec) ? $ssec : '(none)';
1372: #$ssec=(int($ssec)) ? int($ssec) : $ssec;
1373: $section{$ssec}=$ssec;
1374: if ($CurSec eq 'All Sections' || $ssec eq $CurSec) {
1375: $students[$StudNo]=$name;
1376: $StuBox{$sname}=$sdom;
1377: }
1378: $StudNo++;
1379: }
1380: }
1381: }
1382: else {
1383: $r->print('<h1>Could not access course data</h1>');
1384: }
1385: $r->print("Total number of students : ".($#students+1));
1386: $r->rflush();
1387: # --------------- Find all assessments and put them into some linear-like order
1388: &tracetable($firstres,'&'.$lastres.'&');
1389: # my $c=0;
1390: # foreach (sort keys %mapsort) {
1391: # $r->print('<br>'.$c.')'.$_.' ... '.$mapsort{$_});
1392: # $c++;
1393: # }
1394: # my $c=1;
1395: # foreach (sort keys %OpResp) {
1396: # $r->print('<br>'.$c.')'.$_.' ... '.$OpResp{$_}.' ... '.$hash{'src_'.$OpResp{$_}});
1397: # $c++;
1398: # }
1399:
1400: }
1401:
1402: # ------------------------------------------------------------- End render page
1403: else {
1404: $r->print('<h3>Undefined course sequence</h3>');
1405: }
1406: }
1407:
1408:
1409: sub Title {
1410: $r->print('<html><head><title>LON-CAPA Statistics</title></head>');
1411: $r->print('<body bgcolor="#FFFFFF">'.
1412: '<script>window.focus(); window.width=500;window.height=500;</script>'.
1413: '<img align=right src=/adm/lonIcons/lonlogos.gif>');
1414: # ---------------------------------------------------------------- Course title
1415: $r->print('<h1> Course : "'.
1416: $ENV{'course.'.$ENV{'request.course.id'}.
1417: '.description'}.'"</h1><h2>'.localtime().'</h2>');
1418: # ------------------------------- This is going to take a while, produce output
1419: $r->rflush();
1420: }
1421:
1422: sub CreateForm {
1423: $r->print("\n".'<form name=stat method=post action="/adm/statistics" >');
1424: my $content = $ENV{'form.sort'};
1425: if ($content eq '' || $content eq 'Return to Menu') {
1426: my $Ptr = '<h3>';
1427: $Ptr .= '<input type=submit name=sort value="Problem Stats"/>';
1428: $Ptr .= '<br><br>';
1429: $Ptr .= '<input type=submit name=sort value="Problem Analysis"/>';
1430: $Ptr .= '<br><br>';
1431: $Ptr .= '<input type=submit name=sort value="Student Assessment"/>';
1432: $Ptr .= '</h3>';
1433: $r->print( $Ptr );
1434: }
1435: else {
1436: if ( $content eq 'Student Assessment' ||
1437: $content eq 'Create Student Report' ) {
1438: &MapSecOptions();
1439: &StudentOptions();
1440: &StudentReport($CurStu,$StuBox{"$CurStu"});
1441: }
1442: elsif ( $content eq 'Problem Analysis' ) {
1443: &AnalyzeProblem();
1444: }
1445: else {
1446: &MapSecOptions();
1447: &PreStatTable();
1448: }
1449: }
1450: }
1451:
1452:
1453: sub Menu {
1454: &initial();
1455: &Title();
1456: &ClassList();
1457: my $InpStr = $ENV{'form.sort'};
1458: if ($InpStr=~/^Analyze\_/) {
1459: &ShowOpGraph($InpStr,$ENV{'form.interval'});
1460: }
1461: #elsif ($InpStr=~/^View\_/) {
1462: # &ShowStG();
1463: # }
1464: elsif ( $InpStr eq 'DoDiff Graph' || $InpStr eq '%Wrong Graph' ) {
1465: &GetGraphData($InpStr);
1466: $r->print('<IMG src="/cgi-bin/graph.gif?'.$GData.'" />');
1467: }
1468: else {
1469: &CreateForm();
1470: $r->print("\n".'</form>');
1471: }
1472: $r->print("\n".'</body>'.
1473: "\n".'</html>');
1474: $r->rflush();
1475: }
1476:
1477: sub StudentOptions {
1478: my $OpSel5='';
1479: $CurStu = $ENV{'form.student'};
1480: if ( $CurStu eq '' ) {
1481: $CurStu = 'All Students';
1482: $OpSel5 = 'selected';
1483: }
1484: my $Ptr ='';
1485: # ----------------------------------- Loading the Students Combobox
1486: $Ptr .= '<br><b>Select Student</b>'."\n".
1487: '<select name="student">'."\n".
1488: '<option '.$OpSel5.'>All Students</option>';
1489: foreach my $key ( sort keys %StuBox ) {
1490: $Ptr .= '<option';
1491: if ($CurStu eq $key) {$Ptr .= ' selected';}
1492: $Ptr .= '>'.$key."</option>\n";
1493: }
1494: $Ptr .= '</select>';
1495: $Ptr .= '<br><input type="submit" name="sort" value="Create Student Report" />';
1496: $r->print( $Ptr );
1497: $r->rflush();
1498: }
1499:
1500:
1501: sub GetStatus {
1502: $OpSel1='';
1503: $OpSel2='';
1504: $OpSel3='';
1505: $OpSel4='';
1506:
1507: if ( $ENV{'form.order'} eq 'Descending' ) { $OpSel2='selected'; }
1508: else { $OpSel1 = 'selected'; }
1509:
1510: my %myHeader = reverse( %Header );
1511: $Pos = $myHeader{$ENV{'form.sort'}};
1512: if ($Pos == 0) {
1513: $OpSel1 = 'selected';
1514: $ENV{'form.order'}='Ascendig';
1515: }
1516:
1517: $CurMap = $ENV{'form.maps'};
1518: if ( $CurMap eq '' ) {
1519: $CurMap = 'All Maps';
1520: $OpSel3 = 'selected';
1521: }
1522: $CurSec = $ENV{'form.section'};
1523: if ( $CurSec eq '' ) {
1524: $CurSec = 'All Sections';
1525: $OpSel4 = 'selected';
1526: }
1527: }
1528:
1529:
1530: sub MapSecOptions {
1531: # ----------------------------------- Loading the Maps Combobox
1532: my $Ptr = '<br>';
1533: $Ptr .= '<br><input type="submit" name="sort" value="Return to Menu" />';
1534: $Ptr .= '<br><b> Select Map </b>'."\n".
1535: '<select name="maps">'."\n".
1536: '<option '.$OpSel3.'>All Maps</option>';
1537: foreach my $key ( sort keys %maps ) {
1538: $Ptr .= '<option';
1539: if ($CurMap eq $key) {$Ptr .= ' selected';}
1540: $Ptr .= '>'.$key."</option>\n";
1541: }
1542: $Ptr .= '</select>';
1543: $Ptr .= ' ';
1544:
1545: # ----------------------------------- Loading the Sections Combobox
1546: $Ptr .= '<br><b>Select Section</b>'."\n".
1547: '<select name="section">'."\n".
1548: '<option '.$OpSel4.'>All Sections</option>';
1549: foreach my $key ( sort keys %section ) {
1550: $Ptr .= '<option';
1551: if ($CurSec eq $key) {$Ptr .= ' selected';}
1552: $Ptr .= '>'.$key."</option>"."\n";
1553: }
1554: $Ptr .= '</select>'."\n";
1555:
1556: $r->print( $Ptr );
1557: $r->rflush();
1558: }
1559:
1560:
1561: # ================================================================ Main Handler
1562:
1563: sub handler {
1564: $r=shift;
1565:
1566: if (&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'})) {
1567: # ------------------------------------------- Set document type for header only
1568: if ($r->header_only) {
1569: if ($ENV{'browser.mathml'}) {
1570: $r->content_type('text/xml');
1571: }
1572: else {
1573: $r->content_type('text/html');
1574: }
1575: $r->send_http_header;
1576: return OK;
1577: }
1578: my $requrl=$r->uri;
1579: # ----------------------------------------------------------------- Tie db file
1580:
1581: undef %hash;
1582:
1583: if ($ENV{'request.course.fn'}) {
1584: my $fn=$ENV{'request.course.fn'};
1585: if (-e "$fn.db") {
1586: if (tie(%hash,'GDBM_File',"$fn.db",&GDBM_READER,0640)) {
1587: # ------------------------------------------------------------------- Hash tied
1588: $r->content_type('text/html');
1589: $r->send_http_header;
1590: &Menu();
1591: }
1592: else {
1593: $r->content_type('text/html');
1594: $r->send_http_header;
1595: $r->print('<html><body>Coursemap undefined.</body></html>');
1596: }
1597: # ------------------------------------------------------------------ Untie hash
1598: unless (untie(%hash)) {
1599: &Apache::lonnet::logthis("<font color=blue>WARNING: ".
1600: "Could not untie coursemap $fn (browse).</font>");
1601: }
1602:
1603: # -------------------------------------------------------------------- All done
1604: return OK;
1605: # ----------------------------------------------- Errors, hash could no be tied
1606: }
1607: }
1608: else {
1609: $ENV{'user.error.msg'}="$requrl:bre:0:0:Course not initialized";
1610: return HTTP_NOT_ACCEPTABLE;
1611: }
1612: }
1613: else {
1614: $ENV{'user.error.msg'}=
1615: $r->uri.":vgr:0:0:Cannot view grades for complete course";
1616:
1617: return HTTP_NOT_ACCEPTABLE;
1618: }
1619: }
1620: 1;
1621: __END__
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