Annotation of loncom/interface/lonstatistics.pm, revision 1.99

1.1       albertel    1: # The LearningOnline Network with CAPA
                      2: #
1.99    ! matthew     3: # $Id: lonstatistics.pm,v 1.98 2004/02/20 16:24:20 matthew Exp $
1.1       albertel    4: #
                      5: # Copyright Michigan State University Board of Trustees
                      6: #
                      7: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
                      8: #
                      9: # LON-CAPA is free software; you can redistribute it and/or modify
                     10: # it under the terms of the GNU General Public License as published by
                     11: # the Free Software Foundation; either version 2 of the License, or
                     12: # (at your option) any later version.
                     13: #
                     14: # LON-CAPA is distributed in the hope that it will be useful,
                     15: # but WITHOUT ANY WARRANTY; without even the implied warranty of
                     16: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
                     17: # GNU General Public License for more details.
                     18: #
                     19: # You should have received a copy of the GNU General Public License
                     20: # along with LON-CAPA; if not, write to the Free Software
                     21: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
                     22: #
                     23: # /home/httpd/html/adm/gpl.txt
                     24: #
                     25: # http://www.lon-capa.org/
                     26: #
                     27: # (Navigate problems for statistical reports
1.14      minaeibi   28: #
1.1       albertel   29: ###
                     30: 
1.59      matthew    31: =pod
                     32: 
                     33: =head1 NAME
                     34: 
                     35: lonstatistics
                     36: 
                     37: =head1 SYNOPSIS
                     38: 
                     39: Main handler for statistics and chart.
                     40: 
                     41: =over 4
                     42: 
                     43: =cut
                     44: 
1.55      minaeibi   45: package Apache::lonstatistics;
1.1       albertel   46: 
1.30      stredwic   47: use strict;
1.1       albertel   48: use Apache::Constants qw(:common :http);
1.61      matthew    49: use vars qw(
                     50:     @FullClasslist 
                     51:     @Students
                     52:     @Sections 
                     53:     @SelectedSections
                     54:     %StudentData
                     55:     @StudentDataOrder
                     56:     @SelectedStudentData
                     57:     $top_map 
                     58:     @Sequences 
                     59:     @SelectedMaps
1.94      matthew    60:     @Assessments
                     61:     $enrollment_status);
1.61      matthew    62: 
1.1       albertel   63: use Apache::lonnet();
                     64: use Apache::lonhomework;
1.12      minaeibi   65: use Apache::loncommon;
1.29      stredwic   66: use Apache::loncoursedata;
                     67: use Apache::lonhtmlcommon;
1.97      matthew    68: use Apache::lonmysql;
                     69: use Apache::lonlocal;
                     70: use Time::HiRes;
                     71: #
                     72: # Statistics Packages
1.61      matthew    73: use Apache::lonproblemanalysis();
1.89      matthew    74: use Apache::lonsubmissiontimeanalysis();
1.94      matthew    75: use Apache::loncorrectproblemplot();
1.61      matthew    76: use Apache::lonproblemstatistics();
                     77: use Apache::lonstudentassessment();
1.49      stredwic   78: use Apache::lonpercentage;
1.97      matthew    79: use Apache::lonstudentsubmissions();
1.60      matthew    80: 
                     81: #######################################################
                     82: #######################################################
                     83: 
                     84: =pod
                     85: 
                     86: =item Package Variables
                     87: 
                     88: =item @FullClasslist The full classlist
                     89: 
                     90: =item @Students The students we are concerned with for this invocation
                     91: 
                     92: =item @Sections The sections available in this class
                     93: 
                     94: =item $curr_student The student currently being examined
                     95: 
                     96: =item $prev_student The student previous in the classlist
                     97: 
                     98: =item $next_student The student next in the classlist
                     99: 
                    100: =over
                    101: 
                    102: =cut 
                    103: 
                    104: #######################################################
                    105: #######################################################
                    106: #
                    107: # Classlist variables
                    108: #
1.59      matthew   109: my $curr_student;
                    110: my $prev_student;
                    111: my $next_student;
                    112: 
                    113: #######################################################
                    114: #######################################################
                    115: 
                    116: =pod
                    117: 
                    118: =item &clear_classlist_variables()
                    119: 
                    120: undef the following package variables:
                    121: 
                    122: =over
                    123: 
1.60      matthew   124: =item @FullClasslist
                    125: 
                    126: =item @Students
1.59      matthew   127: 
1.60      matthew   128: =item @Sections
1.59      matthew   129: 
1.60      matthew   130: =item @SelectedSections
1.59      matthew   131: 
1.61      matthew   132: =item %StudentData
                    133: 
                    134: =item @StudentDataOrder
                    135: 
                    136: =item @SelectedStudentData
                    137: 
1.60      matthew   138: =item $curr_student
1.59      matthew   139: 
1.60      matthew   140: =item $prev_student
1.59      matthew   141: 
1.60      matthew   142: =item $next_student
1.59      matthew   143: 
                    144: =back
                    145: 
                    146: =cut
                    147: 
                    148: #######################################################
                    149: #######################################################
                    150: sub clear_classlist_variables {
                    151:     undef(@FullClasslist);
                    152:     undef(@Students);
                    153:     undef(@Sections);
1.60      matthew   154:     undef(@SelectedSections);
1.61      matthew   155:     undef(%StudentData);
                    156:     undef(@SelectedStudentData);
1.59      matthew   157:     undef($curr_student);
                    158:     undef($prev_student);
                    159:     undef($next_student);
                    160: }
                    161: 
                    162: #######################################################
                    163: #######################################################
                    164: 
                    165: =pod
                    166: 
                    167: =item &PrepareClasslist()
                    168: 
                    169: Build up the classlist information.  The classlist information is kept in
                    170: the following package variables:
                    171: 
                    172: =over
                    173: 
1.60      matthew   174: =item @FullClasslist
                    175: 
                    176: =item @Students
1.59      matthew   177: 
1.60      matthew   178: =item @Sections
1.59      matthew   179: 
1.60      matthew   180: =item @SelectedSections
1.59      matthew   181: 
1.61      matthew   182: =item %StudentData
                    183: 
                    184: =item @SelectedStudentData
                    185: 
1.60      matthew   186: =item $curr_student
1.59      matthew   187: 
1.60      matthew   188: =item $prev_student
1.59      matthew   189: 
1.60      matthew   190: =item $next_student
1.59      matthew   191: 
                    192: =back
                    193: 
                    194: $curr_student, $prev_student, and $next_student may not be defined, depending
                    195: upon the calling context.
                    196: 
                    197: =cut
                    198: 
                    199: #######################################################
                    200: #######################################################
                    201: sub PrepareClasslist {
                    202:     my %Sections;
                    203:     &clear_classlist_variables();
                    204:     #
                    205:     # Retrieve the classlist
                    206:     my $cid  = $ENV{'request.course.id'};
                    207:     my $cdom = $ENV{'course.'.$cid.'.domain'};
                    208:     my $cnum = $ENV{'course.'.$cid.'.num'};
                    209:     my ($classlist,$field_names) = &Apache::loncoursedata::get_classlist($cid,
                    210:                                                                   $cdom,$cnum);
1.60      matthew   211:     if (exists($ENV{'form.Section'})) {
1.59      matthew   212:         if (ref($ENV{'form.Section'})) {
1.61      matthew   213:             @SelectedSections = @{$ENV{'form.Section'}};
                    214:         } elsif ($ENV{'form.Section'} !~ /^\s*$/) {
                    215:             @SelectedSections = ($ENV{'form.Section'});
                    216:         }
                    217:     }
                    218:     @SelectedSections = ('all') if (! @SelectedSections);
                    219:     foreach (@SelectedSections) {
                    220:         if ($_ eq 'all') {
                    221:             @SelectedSections = ('all');
1.59      matthew   222:         }
                    223:     }
1.61      matthew   224:     #
1.69      matthew   225:     # Deal with instructors with restricted section access
1.70      matthew   226:     if ($ENV{'request.course.sec'} !~ /^\s*$/) {
1.69      matthew   227:         @SelectedSections = ($ENV{'request.course.sec'});
                    228:     }
                    229:     #
1.61      matthew   230:     # Set up %StudentData
                    231:     @StudentDataOrder = qw/fullname username domain id section status/;
                    232:     foreach my $field (@StudentDataOrder) {
                    233:         $StudentData{$field}->{'title'} = $field;
1.63      matthew   234:         $StudentData{$field}->{'base_width'} = length($field);
1.61      matthew   235:         $StudentData{$field}->{'width'} = 
                    236:                                $StudentData{$field}->{'base_width'};
                    237:     }
1.59      matthew   238:     #
1.68      matthew   239:     # get the status requested
1.94      matthew   240:     $enrollment_status = 'Active';
                    241:     $enrollment_status = $ENV{'form.Status'} if (exists($ENV{'form.Status'}));
1.68      matthew   242:     #
1.59      matthew   243:     # Process the classlist
                    244:     while (my ($student,$student_data) = each (%$classlist)) {
                    245:         my $studenthash = ();
                    246:         for (my $i=0; $i< scalar(@$field_names);$i++) {
1.61      matthew   247:             my $field = $field_names->[$i];
                    248:             # Store the data
                    249:             $studenthash->{$field}=$student_data->[$i];
                    250:             # Keep track of the width of the fields
                    251:             next if (! exists($StudentData{$field}));
1.63      matthew   252:             my $length = length($student_data->[$i]);
1.61      matthew   253:             if ($StudentData{$field}->{'width'} < $length) {
                    254:                 $StudentData{$field}->{'width'} = $length; 
                    255:             }
1.59      matthew   256:         }
                    257:         push (@FullClasslist,$studenthash);
                    258:         #
                    259:         # Build up a list of sections
                    260:         my $section = $studenthash->{'section'};
1.60      matthew   261:         if (! defined($section) || $section =~/^\s*$/ || $section == -1) {
                    262:             $studenthash->{'section'} = 'none';
                    263:             $section = $studenthash->{'section'};
                    264:         }
1.59      matthew   265:         $Sections{$section}++;
                    266:         #
                    267:         # Only put in the list those students we are interested in
1.60      matthew   268:         foreach my $sect (@SelectedSections) {
1.68      matthew   269:             if ( (($sect eq 'all') || 
                    270:                   ($section eq $sect)) &&
1.94      matthew   271:                  (($studenthash->{'status'} eq $enrollment_status) || 
                    272:                   ($enrollment_status eq 'Any')) 
1.68      matthew   273:                  ){
1.60      matthew   274:                 push (@Students,$studenthash);
                    275:                 last;
                    276:             }
1.59      matthew   277:         }
                    278:     }
                    279:     #
                    280:     # Put the consolidated section data in the right place
1.70      matthew   281:     if ($ENV{'request.course.sec'} !~ /^\s*$/) {
1.69      matthew   282:         @Sections = ($ENV{'request.course.sec'});
                    283:     } else {
                    284:         @Sections = sort {$a cmp $b} keys(%Sections);
                    285:         unshift(@Sections,'all'); # Put 'all' at the front of the list
                    286:     }
1.59      matthew   287:     #
                    288:     # Sort the Students
                    289:     my $sortby = 'fullname';
1.60      matthew   290:     $sortby = $ENV{'form.sort'} if (exists($ENV{'form.sort'}));
                    291:     my @TmpStudents = sort { $a->{$sortby} cmp $b->{$sortby} ||
                    292:                              $a->{'fullname'} cmp $b->{'fullname'} } @Students;
                    293:     @Students = @TmpStudents;
1.59      matthew   294:     # 
                    295:     # Now deal with that current student thing....
1.72      matthew   296:     $curr_student = undef;
                    297:     if (exists($ENV{'form.SelectedStudent'})) {
1.59      matthew   298:         my ($current_uname,$current_dom) = 
1.72      matthew   299:             split(':',$ENV{'form.SelectedStudent'});
1.59      matthew   300:         my $i;
                    301:         for ($i = 0; $i<=$#Students; $i++) {
                    302:             next if (($Students[$i]->{'username'} ne $current_uname) || 
                    303:                      ($Students[$i]->{'domain'}   ne $current_dom));
1.60      matthew   304:             $curr_student = $Students[$i];
1.59      matthew   305:             last; # If we get here, we have our student.
                    306:         }
1.72      matthew   307:         if (defined($curr_student)) {
                    308:             if ($i == 0) {
                    309:                 $prev_student = undef;
                    310:             } else {
                    311:                 $prev_student = $Students[$i-1];
                    312:             }
                    313:             if ($i == $#Students) {
                    314:                 $next_student = undef;
                    315:             } else {
                    316:                 $next_student = $Students[$i+1];
                    317:             }
1.59      matthew   318:         }
                    319:     }
1.61      matthew   320:     #
                    321:     if (exists($ENV{'form.StudentData'})) {
                    322:         if (ref($ENV{'form.StudentData'}) eq 'ARRAY') {
                    323:             @SelectedStudentData = @{$ENV{'form.StudentData'}};
                    324:         } else {
                    325:             @SelectedStudentData = ($ENV{'form.StudentData'});
                    326:         }
                    327:     } else {
1.72      matthew   328:         @SelectedStudentData = ('username');
1.61      matthew   329:     }
                    330:     foreach (@SelectedStudentData) {
                    331:         if ($_ eq 'all') {
                    332:             @SelectedStudentData = ('all');
                    333:             last;
                    334:         }
                    335:     }
                    336:     #
                    337:     return;
                    338: }
                    339: 
1.71      matthew   340: 
                    341: #######################################################
                    342: #######################################################
                    343: 
                    344: =pod
                    345: 
                    346: =item get_students
                    347: 
                    348: Returns a list of the selected students
                    349: 
                    350: =cut
                    351: 
                    352: #######################################################
                    353: #######################################################
                    354: sub get_students {
                    355:     if (! @Students) {
                    356:         &PrepareClasslist()
                    357:     }
                    358:     return @Students;
                    359: }
                    360: 
1.61      matthew   361: #######################################################
                    362: #######################################################
                    363: 
                    364: =pod
                    365: 
                    366: =item &current_student()
                    367: 
                    368: Returns a pointer to a hash containing data about the currently
                    369: selected student.
                    370: 
                    371: =cut
                    372: 
                    373: #######################################################
                    374: #######################################################
                    375: sub current_student { 
1.72      matthew   376:     return $curr_student;
1.61      matthew   377: }
                    378: 
                    379: #######################################################
                    380: #######################################################
                    381: 
                    382: =pod
                    383: 
                    384: =item &previous_student()
                    385: 
                    386: Returns a pointer to a hash containing data about the student prior
                    387: in the list of students.  Or something.  
                    388: 
                    389: =cut
                    390: 
                    391: #######################################################
                    392: #######################################################
                    393: sub previous_student { 
1.72      matthew   394:     return $prev_student;
1.59      matthew   395: }
                    396: 
                    397: #######################################################
                    398: #######################################################
1.61      matthew   399: 
                    400: =pod
                    401: 
                    402: =item &next_student()
                    403: 
                    404: Returns a pointer to a hash containing data about the next student
                    405: to be viewed.
                    406: 
                    407: =cut
                    408: 
                    409: #######################################################
                    410: #######################################################
                    411: sub next_student { 
1.72      matthew   412:     return $next_student;
1.61      matthew   413: }
1.60      matthew   414: 
                    415: #######################################################
                    416: #######################################################
                    417: 
                    418: =pod
                    419: 
                    420: =item &clear_sequence_variables()
                    421: 
                    422: =cut
                    423: 
                    424: #######################################################
                    425: #######################################################
                    426: sub clear_sequence_variables {
                    427:     undef($top_map);
                    428:     undef(@Sequences);
                    429:     undef(@Assessments);
                    430: }
                    431: 
                    432: #######################################################
                    433: #######################################################
                    434: 
                    435: =pod
                    436: 
1.61      matthew   437: =item &SetSelectedMaps($elementname)
                    438: 
                    439: Sets the @SelectedMaps array from $ENV{'form.'.$elementname};
                    440: 
                    441: =cut
                    442: 
                    443: #######################################################
                    444: #######################################################
                    445: sub SetSelectedMaps {
                    446:     my $elementname = shift;
                    447:     if (exists($ENV{'form.'.$elementname})) {
                    448:         if (ref($ENV{'form.'.$elementname})) {
                    449:             @SelectedMaps = @{$ENV{'form.'.$elementname}};
                    450:         } else {
                    451:             @SelectedMaps = ($ENV{'form.'.$elementname});
                    452:         }
                    453:     } else {
                    454:         @SelectedMaps = ('all');
                    455:     }
1.64      matthew   456: }
                    457: 
                    458: 
                    459: #######################################################
                    460: #######################################################
                    461: 
                    462: =pod
                    463: 
                    464: =item &Sequences_with_Assess()
                    465: 
                    466: Returns an array containing the subset of @Sequences which contain
                    467: assessments.
                    468: 
                    469: =cut
                    470: 
                    471: #######################################################
                    472: #######################################################
                    473: sub Sequences_with_Assess {
                    474:     my @Sequences_to_Show;
                    475:     foreach my $map_symb (@SelectedMaps) {
                    476:         foreach my $sequence (@Sequences) {
                    477:             next if ($sequence->{'symb'} ne $map_symb && $map_symb ne 'all');
                    478:             next if ($sequence->{'num_assess'} < 1);
                    479:             push (@Sequences_to_Show,$sequence);
                    480:         }
                    481:     }
                    482:     return @Sequences_to_Show;
1.61      matthew   483: }
                    484: 
                    485: #######################################################
                    486: #######################################################
                    487: 
                    488: =pod
                    489: 
1.60      matthew   490: =item &PrepareCourseData($r)
                    491: 
                    492: =cut
                    493: 
                    494: #######################################################
                    495: #######################################################
                    496: sub PrepareCourseData {
                    497:     my ($r) = @_;
                    498:     &clear_sequence_variables();
1.61      matthew   499:     my ($top,$sequences,$assessments) = 
                    500:         &Apache::loncoursedata::get_sequence_assessment_data();
1.60      matthew   501:     if (! defined($top) || ! ref($top)) {
                    502:         # There has been an error, better report it
                    503:         &Apache::lonnet::logthis('top is undefined');
                    504:         return;
                    505:     }
                    506:     $top_map = $top if (ref($top));
                    507:     @Sequences = @{$sequences} if (ref($sequences) eq 'ARRAY');
1.61      matthew   508:     @Assessments = @{$assessments} if (ref($assessments) eq 'ARRAY');
                    509:     return;
                    510: }
                    511: 
                    512: #######################################################
                    513: #######################################################
1.60      matthew   514: 
                    515: =pod
                    516: 
1.61      matthew   517: =item &log_sequence($sequence,$recursive,$padding)
                    518: 
                    519: Write data about the sequence to a logfile.  If $recursive is not
                    520: undef the data is written recursively.  $padding is used for recursive
                    521: calls.
                    522: 
                    523: =cut
                    524: 
                    525: #######################################################
                    526: #######################################################
                    527: sub log_sequence {
                    528:     my ($seq,$recursive,$padding) = @_;
                    529:     $padding = '' if (! defined($padding));
                    530:     if (ref($seq) ne 'HASH') {
                    531:         &Apache::lonnet::logthis('log_sequence passed bad sequnce');
                    532:         return;
                    533:     }
                    534:     &Apache::lonnet::logthis($padding.'sequence '.$seq->{'title'});
                    535:     while (my($key,$value) = each(%$seq)) {
                    536:         next if ($key eq 'contents');
                    537:         if (ref($value) eq 'ARRAY') {
                    538:             for (my $i=0;$i< scalar(@$value);$i++) {
                    539:                 &Apache::lonnet::logthis($padding.$key.'['.$i.']='.
                    540:                                          $value->[$i]);
                    541:             }
                    542:         } else {
                    543:             &Apache::lonnet::logthis($padding.$key.'='.$value);
                    544:         }
                    545:     }
                    546:     if (defined($recursive)) {
                    547:         &Apache::lonnet::logthis($padding.'-'x20);
                    548:         &Apache::lonnet::logthis($padding.'contains:');
                    549:         foreach my $item (@{$seq->{'contents'}}) {
                    550:             if ($item->{'type'} eq 'container') {
                    551:                 &log_sequence($item,$recursive,$padding.'    ');
                    552:             } else {
                    553:                 &Apache::lonnet::logthis($padding.'title = '.$item->{'title'});
                    554:                 while (my($key,$value) = each(%$item)) {
                    555:                     next if ($key eq 'title');
                    556:                     if (ref($value) eq 'ARRAY') {
                    557:                         for (my $i=0;$i< scalar(@$value);$i++) {
                    558:                             &Apache::lonnet::logthis($padding.$key.'['.$i.']='.
                    559:                                                      $value->[$i]);
                    560:                         }
                    561:                     } else {
                    562:                         &Apache::lonnet::logthis($padding.$key.'='.$value);
                    563:                     }
                    564:                 }
                    565:             }
1.60      matthew   566:         }
1.61      matthew   567:         &Apache::lonnet::logthis($padding.'end contents of '.$seq->{'title'});
                    568:         &Apache::lonnet::logthis($padding.'-'x20);
1.60      matthew   569:     }
1.61      matthew   570:     return;
                    571: }
                    572: 
                    573: ##############################################
                    574: ##############################################
                    575: 
                    576: =pod 
                    577: 
                    578: =item &StudentDataSelect($elementname,$status,$numvisible,$selected)
                    579: 
                    580: Returns html for a selection box allowing the user to choose one (or more) 
                    581: of the fields of student data available (fullname, username, id, section, etc)
                    582: 
                    583: =over 4
                    584: 
                    585: =item $elementname The name of the HTML form element
                    586: 
                    587: =item $status 'multiple' or 'single' selection box
                    588: 
                    589: =item $numvisible The number of options to be visible
                    590: 
                    591: =back
1.60      matthew   592: 
                    593: =cut
                    594: 
1.61      matthew   595: ##############################################
                    596: ##############################################
                    597: sub StudentDataSelect {
                    598:     my ($elementname,$status,$numvisible)=@_;
                    599:     if ($numvisible < 1) {
                    600:         return;
                    601:     }
                    602:     #
                    603:     # Build the form element
                    604:     my $Str = "\n";
                    605:     $Str .= '<select name="'.$elementname.'" ';
                    606:     if ($status ne 'single') {
                    607:         $Str .= 'multiple="true" ';
                    608:     }
                    609:     $Str .= 'size="'.$numvisible.'" >'."\n";
                    610:     #
                    611:     # Deal with 'all'
                    612:     $Str .= '    <option value="all" ';
                    613:     foreach (@SelectedStudentData) {
                    614:         if ($_ eq 'all') {
                    615:             $Str .= 'selected ';
                    616:             last;
                    617:         }
                    618:     }
                    619:     $Str .= ">all</option>\n";
                    620:     #
                    621:     # Loop through the student data fields
                    622:     foreach my $item (@StudentDataOrder) {
                    623:         $Str .= '    <option value="'.$item.'" ';
                    624:         foreach (@SelectedStudentData) {
                    625:             if ($item eq $_ ) {
                    626:                 $Str .= 'selected ';
                    627:                 last;
                    628:             }
                    629:         }
                    630:         $Str .= '>'.$item."</option>\n";
                    631:     }
                    632:     $Str .= "</select>\n";
                    633:     return $Str;
1.60      matthew   634: }
                    635: 
                    636: ##############################################
                    637: ##############################################
                    638: 
                    639: =pod 
                    640: 
1.61      matthew   641: =item &MapSelect($elementname,$status,$numvisible,$restriction) 
1.60      matthew   642: 
                    643: Returns html for a selection box allowing the user to choose one (or more) 
                    644: of the sequences in the course.  The values of the sequences are the symbs.
                    645: If the top sequence is selected, the value 'top' will result.
                    646: 
                    647: =over 4
                    648: 
                    649: =item $elementname The name of the HTML form element
                    650: 
                    651: =item $status 'multiple' or 'single' selection box
                    652: 
                    653: =item $numvisible The number of options to be visible
                    654: 
                    655: =item $restriction Code reference to subroutine which returns true or 
                    656: false.  The code must expect a reference to a sequence data structure.
                    657: 
                    658: =back
                    659: 
                    660: =cut
                    661: 
                    662: ##############################################
                    663: ##############################################
                    664: sub MapSelect {
1.61      matthew   665:     my ($elementname,$status,$numvisible,$restriction)=@_;
1.60      matthew   666:     if ($numvisible < 1) {
                    667:         return;
                    668:     }
                    669:     #
                    670:     # Set up array of selected items
1.61      matthew   671:     &SetSelectedMaps($elementname);
1.60      matthew   672:     #
                    673:     # Set up the restriction call
                    674:     if (! defined($restriction)) {
                    675:         $restriction = sub { 1; };
                    676:     }
                    677:     #
                    678:     # Build the form element
                    679:     my $Str = "\n";
                    680:     $Str .= '<select name="'.$elementname.'" ';
                    681:     if ($status ne 'single') {
                    682:         $Str .= 'multiple="true" ';
                    683:     }
                    684:     $Str .= 'size="'.$numvisible.'" >'."\n";
                    685:     #
1.61      matthew   686:     # Deal with 'all'
                    687:     foreach (@SelectedMaps) {
                    688:         if ($_ eq 'all') {
                    689:             @SelectedMaps = ('all');
                    690:             last;
                    691:         }
                    692:     }
                    693:     #
                    694:     # Put in option for 'all'
                    695:     $Str .= '    <option value="all" ';
                    696:     foreach (@SelectedMaps) {
                    697:         if ($_ eq 'all') {
                    698:             $Str .= 'selected ';
                    699:             last;
                    700:         }
                    701:     }
                    702:     $Str .= ">all</option>\n";
                    703:     #
1.60      matthew   704:     # Loop through the sequences
1.61      matthew   705:     foreach my $seq (@Sequences) {
                    706:         next if (! $restriction->($seq));
                    707:         $Str .= '    <option value="'.$seq->{'symb'}.'" ';
                    708:         foreach (@SelectedMaps) {
                    709:             if ($seq->{'symb'} eq $_) {
1.60      matthew   710:                 $Str .= 'selected ';
                    711:                 last;
                    712:             }
                    713:         }
1.61      matthew   714:         $Str .= '>'.$seq->{'title'}."</option>\n";
1.60      matthew   715:     }
                    716:     $Str .= "</select>\n";
                    717:     return $Str;
                    718: }
                    719: 
                    720: ##############################################
                    721: ##############################################
                    722: 
                    723: =pod 
                    724: 
                    725: =item &SectionSelect($elementname,$status,$numvisible) 
                    726: 
                    727: Returns html for a selection box allowing the user to choose one (or more) 
                    728: of the sections in the course.  
                    729: 
1.71      matthew   730: Uses the package variables @Sections and @SelectedSections
1.60      matthew   731: =over 4
                    732: 
                    733: =item $elementname The name of the HTML form element
                    734: 
                    735: =item $status 'multiple' or 'single' selection box
                    736: 
                    737: =item $numvisible The number of options to be visible
                    738: 
                    739: =back
                    740: 
                    741: =cut
                    742: 
                    743: ##############################################
                    744: ##############################################
                    745: sub SectionSelect {
                    746:     my ($elementname,$status,$numvisible)=@_;
                    747:     if ($numvisible < 1) {
                    748:         return;
                    749:     }
                    750:     #
1.71      matthew   751:     # Make sure we have the data we need to continue
                    752:     if (! @Sections) {
                    753:         &PrepareClasslist()
                    754:     }
                    755:     #
1.60      matthew   756:     # Build the form element
                    757:     my $Str = "\n";
                    758:     $Str .= '<select name="'.$elementname.'" ';
                    759:     if ($status ne 'single') {
                    760:         $Str .= 'multiple="true" ';
                    761:     }
                    762:     $Str .= 'size="'.$numvisible.'" >'."\n";
                    763:     #
                    764:     # Loop through the sequences
                    765:     foreach my $s (@Sections) {
                    766:         $Str .= '    <option value="'.$s.'" ';
                    767:         foreach (@SelectedSections) {
1.61      matthew   768:             if ($s eq $_) {
1.60      matthew   769:                 $Str .= 'selected ';
                    770:                 last;
                    771:             }
                    772:         }
                    773:         $Str .= '>'.$s."</option>\n";
                    774:     }
                    775:     $Str .= "</select>\n";
                    776:     return $Str;
1.80      matthew   777: }
                    778: 
                    779: #######################################################
                    780: #######################################################
                    781: 
                    782: =pod
                    783: 
                    784: =item &CreateAndParseOutputSelector()
                    785: 
                    786: Construct a selection list of options for output and parse output selections.
                    787: 
                    788: =cut
                    789: 
                    790: #######################################################
                    791: #######################################################
                    792: sub OutputDescriptions {
                    793:     my (@OutputOptions) = @_;
                    794:     my $Str = '';
                    795:     $Str .= "<h2>Output Modes</h2>\n";
                    796:     $Str .= "<dl>\n";
                    797:     foreach my $outputmode (@OutputOptions) {
                    798: 	$Str .="    <dt>".$outputmode->{'name'}."</dt>\n";
                    799: 	$Str .="        <dd>".$outputmode->{'description'}."</dd>\n";
                    800:     }
                    801:     $Str .= "</dl>\n";
                    802:     return $Str;
                    803: }
                    804: 
                    805: sub CreateAndParseOutputSelector {
                    806:     my ($elementname,$default,@OutputOptions) = @_;
                    807:     my $output_mode;
                    808:     my $show;
                    809:     my $Str = '';
                    810:     #
                    811:     # Format for output options is 'mode, restrictions';
                    812:     my $selected = $default;
                    813:     if (exists($ENV{'form.'.$elementname})) {
                    814:         if (ref($ENV{'form.'.$elementname} eq 'ARRAY')) {
                    815:             $selected = $ENV{'form.'.$elementname}->[0];
                    816:         } else {
                    817:             $selected = $ENV{'form.'.$elementname};
                    818:         }
                    819:     }
                    820:     #
                    821:     # Set package variables describing output mode
                    822:     $output_mode = 'html';
                    823:     $show        = 'all';
                    824:     foreach my $option (@OutputOptions) {
                    825:         next if ($option->{'value'} ne $selected);
                    826:         $output_mode = $option->{'mode'};
                    827:         $show        = $option->{'show'};
                    828:     }
                    829:     #
                    830:     # Build the form element
                    831:     $Str = qq/<select size="5" name="$elementname">/;
                    832:     foreach my $option (@OutputOptions) {
                    833:         if (exists($option->{'special'}) && 
                    834:             $option->{'special'} =~ /do not show/) {
                    835:             next;
                    836:         }
                    837:         $Str .= "\n".'    <option value="'.$option->{'value'}.'"';
                    838:         $Str .= " selected " if ($option->{'value'} eq $selected);
1.81      matthew   839:         $Str .= ">".&mt($option->{'name'})."<\/option>";
1.80      matthew   840:     }
                    841:     $Str .= "\n</select>";
                    842:     return ($Str,$output_mode,$show);
1.79      matthew   843: }
                    844: 
                    845: ###############################################
                    846: ###############################################
                    847: 
                    848: =pod 
                    849: 
                    850: =item &Gather_Student_Data()
                    851: 
                    852: Ensures all student data is up to date.
                    853: 
                    854: =cut
                    855: 
                    856: ###############################################
                    857: ###############################################
                    858: sub Gather_Student_Data {
                    859:     my ($r) = @_;
                    860:     my $c = $r->connection();
1.83      matthew   861:     #
                    862:     &Apache::loncoursedata::clear_internal_caches();
1.79      matthew   863:     #
                    864:     my @Sequences = &Apache::lonstatistics::Sequences_with_Assess();
                    865:     #
                    866:     my @Students = @Apache::lonstatistics::Students;
                    867:     #
                    868:     # Open the progress window
                    869:     my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin
                    870:         ($r,'Statistics Compilation Status',
                    871:          'Statistics Compilation Progress', scalar(@Students));
                    872:     #
                    873:     while (my $student = shift @Students) {
                    874:         return if ($c->aborted());
                    875:         my ($status,undef) = &Apache::loncoursedata::ensure_current_data
                    876:             ($student->{'username'},$student->{'domain'},
                    877:              $ENV{'request.course.id'});
                    878:         &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
1.86      www       879:                                                  &mt('last student'));
1.79      matthew   880:     }
                    881:     &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
                    882:     $r->rflush();
1.60      matthew   883: }
                    884: 
1.82      matthew   885: ###############################################
                    886: ###############################################
                    887: 
                    888: =pod 
                    889: 
                    890: =item &Gather_Full_Student_Data()
                    891: 
                    892: Ensures all student data is up to date.
                    893: 
                    894: =cut
                    895: 
                    896: ###############################################
                    897: ###############################################
                    898: sub Gather_Full_Student_Data {
                    899:     my ($r) = @_;
                    900:     my $c = $r->connection();
1.84      matthew   901:     #
                    902:     &Apache::loncoursedata::clear_internal_caches();
1.82      matthew   903:     #
                    904:     my @Students = @Apache::lonstatistics::Students;
                    905:     #
                    906:     # Open the progress window
                    907:     my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin
                    908:         ($r,&mt('Student Data Compilation Status'),
                    909:          &mt('Student Data Compilation Progress'), scalar(@Students));
                    910:     #
                    911:     while (my $student = shift @Students) {
                    912:         return if ($c->aborted());
                    913:         my ($status,undef) = &Apache::loncoursedata::ensure_current_full_data
                    914:             ($student->{'username'},$student->{'domain'},
                    915:              $ENV{'request.course.id'});
                    916:         &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
                    917:                                                  &mt('last student'));
                    918:     }
                    919:     &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
                    920:     $r->rflush();
                    921: }
                    922: 
1.61      matthew   923: ##################################################
                    924: ##################################################
1.60      matthew   925: sub DisplayClasslist {
                    926:     my ($r)=@_;
                    927:     #
                    928:     my @Fields = ('fullname','username','domain','id','section');
                    929:     #
                    930:     my $Str='';
1.78      matthew   931:     if (! @Students) {
                    932:         if ($SelectedSections[0] eq 'all') { 
                    933:             if (lc($ENV{'form.Status'}) eq 'any') {
                    934:                 $Str .= '<h2>There are no students in the course.</h2>';
                    935:             } elsif (lc($ENV{'form.Status'}) eq 'active') {
                    936:                 $Str .= '<h2>There are no currently enrolled students in '.
                    937:                     'the course.</h2>';
                    938:             } elsif (lc($ENV{'form.Status'}) eq 'expired') {
                    939:                 $Str .= '<h2>There are no previously enrolled '.
                    940:                     'students in the course.</h2>';
                    941:             }
                    942:         } else { 
                    943:             my $sections;
                    944:             if (@SelectedSections == 1) {
                    945:                 $sections = 'section '.$SelectedSections[0];
                    946:             } elsif (@SelectedSections > 2) {
                    947:                 $sections = 'sections '.join(', ',@SelectedSections);
                    948:                 $sections =~ s/, ([^,])*$/, and $1/;
                    949:             } else {
                    950:                 $sections = 'sections '.join(' and ',@SelectedSections);
                    951:             }
                    952:             if (lc($ENV{'form.Status'}) eq 'any') {
                    953:                 $Str .= '<h2>There are no students in '.$sections.'.</h2>';
                    954:             } elsif (lc($ENV{'form.Status'}) eq 'active') {
                    955:                 $Str .= '<h2>There are no currently enrolled students '.
                    956:                     'in '.$sections.'.</h2>';
                    957:             } elsif (lc($ENV{'form.Status'}) eq 'expired') {
                    958:                 $Str .= '<h2>There are no previously enrolled students '.
                    959:                     'in '.$sections.'.</h2>';
                    960:             }
                    961:         }
                    962:         $Str.= '<a href="/adm/statistics?reportSelected=student_assessment">'.
                    963:             'Return to the chart.</a>';
                    964:         $r->print($Str);
                    965:         $r->rflush();
                    966:         return;
                    967:     }
                    968: 
1.76      matthew   969:     # "Click" is asinine but it is probably not my place to change the world.
1.78      matthew   970:     $Str .= '<h2>Click on a students name or username to view their chart</h2>';
1.60      matthew   971:     $Str .= '<table border="0"><tr><td bgcolor="#777777">'."\n";
                    972:     $Str .= '<table border="0" cellpadding="3"><tr bgcolor="#e6ffff">'."\n";
                    973:     foreach my $field (@Fields) {
1.65      matthew   974:         $Str .= '<th><a href="/adm/statistics?reportSelected=classlist&sort='.$field.'">'.$field.
1.60      matthew   975:             '</a></th>';
                    976:     }
                    977:     $Str .= '</tr>'."\n";
                    978:     #
                    979:     my $alternate = 0;
1.65      matthew   980:     foreach my $student (@Students) { # @Students is a package variable
1.60      matthew   981:         my $sname = $student->{'username'}.':'.$student->{'domain'};
                    982:         if($alternate) {
                    983:             $Str .= '<tr bgcolor="#ffffe6">';
                    984:         } else {
                    985:             $Str .= '<tr bgcolor="#ffffc6">';
                    986:         }
                    987:         $alternate = ($alternate + 1) % 2;
                    988:         #
                    989:         foreach my $field (@Fields) {
                    990:             $Str .= '<td>';
1.78      matthew   991:             if ($field eq 'fullname' || $field eq 'username') {
1.60      matthew   992:                 $Str .= '<a href="/adm/statistics?reportSelected=';
1.65      matthew   993:                 $Str .= &Apache::lonnet::escape('student_assessment');
1.72      matthew   994:                 $Str .= '&sort='.&Apache::lonnet::escape($ENV{'form.sort'});
                    995:                 $Str .= '&SelectedStudent=';
1.61      matthew   996:                 $Str .= &Apache::lonnet::escape($sname).'">';
1.60      matthew   997:                 $Str .= $student->{$field}.'&nbsp';
                    998:                 $Str .= '</a>';
                    999:             } else {
                   1000:                 $Str .= $student->{$field};
                   1001:             }
                   1002:             $Str .= '</td>';
                   1003:         }
                   1004:         $Str .= "</tr>\n";
                   1005:     }
                   1006:     $Str .= '</table></td></tr></table>'."\n";
                   1007:     #
                   1008:     $r->print($Str);
                   1009:     $r->rflush();
                   1010:     #
                   1011:     return;
                   1012: }
                   1013: 
1.65      matthew  1014: ##############################################
                   1015: ##############################################
1.33      stredwic 1016: sub CreateMainMenu {
1.65      matthew  1017:     #
1.85      matthew  1018:     # Define menu data
                   1019:     my @reports = ({ internal_name => 'problem_statistics',
                   1020:                      name => &mt('Overall Problem Statistics'),
                   1021:                      short_description => 
                   1022:     &mt('Student performance statistics on all problems.'),
                   1023:                  },
                   1024:                    { internal_name => 'problem_analysis',
                   1025:                      name => &mt('Detailed Problem Analysis'),
                   1026:                      short_description => 
                   1027:     &mt('Detailed statistics and graphs of student performance on problems.'),
                   1028:                  },
1.89      matthew  1029:                    { internal_name => 'submissiontime_analysis',
1.94      matthew  1030:                      name => &mt('Submission Time Plots'),
1.89      matthew  1031:                      short_description => 
                   1032:     &mt('Display and analysis of submission times on assessments.'),
                   1033:                  },
1.97      matthew  1034:                    { internal_name => 'student_submission_reports',
                   1035:                      name => &mt('Student Submission Reports'),
                   1036:                      short_description => 
                   1037:     &mt('Prepare Excel spreadsheets of student submissions.'),
                   1038:                  },
1.94      matthew  1039:                    { internal_name => 'correct_problems_plot',
                   1040:                      name => &mt('Correct Problems Plot'),
                   1041:                      short_description => 
                   1042:     &mt('Display a histogram of student performance in the course.'),
                   1043:                  },
1.88      matthew  1044: #                   { internal_name => 'student_assessment',
                   1045: #                     name => &mt('Problem Status Chart'),
                   1046: #                     short_description => 
                   1047: #    &mt('Brief view of each students performance in course.'),
                   1048: #                 },
1.85      matthew  1049:                    # 'percentage'  => 'Correct-problems Plot',
                   1050:                    # 'activitylog' => 'Activity Log',
                   1051:                    );
1.65      matthew  1052:     #
1.85      matthew  1053:     # Create the menu
                   1054:     my $Str;
1.98      matthew  1055:     $Str .= '<h2>'.&mt('Please select a report to generate').'</h2>';
1.85      matthew  1056:     foreach my $reportdata (@reports) {
1.87      matthew  1057:         $Str .='    <h3><a href="/adm/statistics?reportSelected='.
1.85      matthew  1058:             $reportdata->{'internal_name'}.'" >'.
1.87      matthew  1059:             $reportdata->{'name'}."</a></h3>\n";
                   1060:         $Str .= '    '.('&nbsp;'x8).$reportdata->{'short_description'}.
                   1061:             "\n";
1.85      matthew  1062:     }
                   1063:     $Str .="</dl>\n";
1.65      matthew  1064:     #
1.33      stredwic 1065:     return $Str;
                   1066: }
                   1067: 
1.65      matthew  1068: ##############################################
                   1069: ##############################################
1.1       albertel 1070: sub handler {
1.31      minaeibi 1071:     my $r=shift;
1.65      matthew  1072:     my $c = $r->connection();
                   1073:     #
                   1074:     # Check for overloading
1.51      www      1075:     my $loaderror=&Apache::lonnet::overloaderror($r);
                   1076:     if ($loaderror) { return $loaderror; }
                   1077:     $loaderror=
                   1078:        &Apache::lonnet::overloaderror($r,
                   1079:          $ENV{'course.'.$ENV{'request.course.id'}.'.home'});
                   1080:     if ($loaderror) { return $loaderror; }
1.65      matthew  1081:     #
                   1082:     # Check for access
1.69      matthew  1083:     if (! &Apache::lonnet::allowed('vgr',$ENV{'request.course.id'})) {
1.27      stredwic 1084:         $ENV{'user.error.msg'}=
1.69      matthew  1085:             $r->uri.":vgr:0:0:Cannot view grades for complete course";
                   1086:         if (! &Apache::lonnet::allowed('vgr',
                   1087:                       $ENV{'request.course.id'}.'/'.$ENV{'request.course.sec'})) {
                   1088:             $ENV{'user.error.msg'}=
                   1089:                 $r->uri.":vgr:0:0:Cannot view grades with given role";
                   1090:             return HTTP_NOT_ACCEPTABLE;
                   1091:         }
1.27      stredwic 1092:     }
1.65      matthew  1093:     #
                   1094:     # Send the header
1.92      www      1095:     &Apache::loncommon::no_cache($r);
                   1096:     &Apache::loncommon::content_type($r,'text/html');
1.27      stredwic 1097:     $r->send_http_header;
1.92      www      1098:     if ($r->header_only) { return OK; }
1.65      matthew  1099:     #
                   1100:     # Extract form elements from query string
1.60      matthew  1101:     &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1.65      matthew  1102:                                             ['sort','reportSelected',
1.72      matthew  1103:                                              'SelectedStudent']);
1.65      matthew  1104:     #
                   1105:     # Give the LON-CAPA page header
1.96      matthew  1106:     $r->print('<html><head><title>'.
                   1107:               &mt('Course Statistics and Charts').
                   1108:               "</title></head>\n".
1.98      matthew  1109:               &Apache::loncommon::bodytag('Course Statistics and Charts'));
1.65      matthew  1110:     $r->rflush();
1.85      matthew  1111:     # 
                   1112:     # Either print out a menu for them or send them to a report
1.98      matthew  1113:     &Apache::lonhtmlcommon::clear_breadcrumbs();
                   1114:     &Apache::lonhtmlcommon::add_breadcrumb({href=>'/adm/statistics',
1.99    ! matthew  1115:                                             title=>&mt('Statistics'),
        !          1116:                                             text =>&mt('Statistics'),
1.98      matthew  1117:                                             faq=>139,
                   1118:                                             bug=>'Statistics and Charts'});
1.85      matthew  1119:     if (! exists($ENV{'form.reportSelected'}) || 
                   1120:         $ENV{'form.reportSelected'} eq '') {
1.98      matthew  1121:         $r->print(&Apache::lonhtmlcommon::breadcrumbs
1.99    ! matthew  1122:                   (undef,&mt('Statistics Main Page')).
1.98      matthew  1123:                   &CreateMainMenu());
1.85      matthew  1124:     } else {
1.65      matthew  1125:     #
1.85      matthew  1126:         if (! &Apache::lonmysql::verify_sql_connection()) {
                   1127:             my $serveradmin = $r->dir_config('lonAdmEMail');
                   1128:             $r->print('<h2><font color="Red">'.
                   1129:                       &mt('Unable to connect to database!').
                   1130:                       '</font></h2>');
                   1131:             $r->print('<p>'.
                   1132:                       &mt('Please notify the server administrator ').
                   1133:                       '<b>'.$serveradmin.'</b></p>');
                   1134:             $r->print('<p>'.
                   1135:                       &mt('Course Statistics and Charts cannot be '.
                   1136:                           'retrieved until the database is restarted.  '.
                   1137:                           'Your data is intact but cannot be displayed '.
                   1138:                           'at this time.').'</p>');
                   1139:             $r->print('</body></html>');
                   1140:             return;
                   1141:         }
                   1142:         #
                   1143:         # Clean out the caches
                   1144:         if (exists($ENV{'form.ClearCache'})) {
                   1145:             &Apache::loncoursedata::delete_caches($ENV{'requres.course.id'});
                   1146:         }
                   1147:         #
                   1148:         # Begin form output
                   1149:         $r->print('<form name="Statistics" ');
                   1150:         $r->print('method="post" action="/adm/statistics">');
                   1151:         $r->rflush();
                   1152:         #
                   1153:         my $GoToPage = $ENV{'form.reportSelected'};
1.90      matthew  1154:         #
                   1155:         # Set up the statistics and chart environment
                   1156:         &PrepareCourseData($r);
                   1157:         #
1.85      matthew  1158:         $r->print('<input type="hidden" name="reportSelected" value="'.
                   1159:                   $GoToPage.'">');
                   1160:         if($GoToPage eq 'activitylog') {
1.65      matthew  1161: #        &Apache::lonproblemstatistics::Activity();
1.85      matthew  1162:         } elsif($GoToPage eq 'problem_statistics') {
1.98      matthew  1163:             &Apache::lonhtmlcommon::add_breadcrumb
                   1164:                 ({href=>'/adm/statistics?reportselected=problem_statistics',
1.99    ! matthew  1165:                   text=>&mt('Overall Problem Statistics'),
1.98      matthew  1166:                   faq=>139,bug=>'Statistics and Charts'});
1.85      matthew  1167:             &Apache::lonproblemstatistics::BuildProblemStatisticsPage($r,$c);
                   1168:         } elsif($GoToPage eq 'problem_analysis') {
1.98      matthew  1169:             &Apache::lonhtmlcommon::add_breadcrumb
                   1170:                 ({href=>'/adm/statistics?reportselected=problem_analysis',
1.99    ! matthew  1171:                   text=>&mt('Detailed Problem Analysis'),
1.98      matthew  1172:                   faq=>139,bug=>'Statistics and Charts'});
1.85      matthew  1173:             &Apache::lonproblemanalysis::BuildProblemAnalysisPage($r,$c);
1.89      matthew  1174:         } elsif($GoToPage eq 'submissiontime_analysis') {
1.98      matthew  1175:             &Apache::lonhtmlcommon::add_breadcrumb
                   1176:                 ({href=>
                   1177:                       '/adm/statistics?reportselected=submissiontime_analysis',
1.99    ! matthew  1178:                       text=>&mt('Submission Time Plots'),
1.98      matthew  1179:                       faq=>139,bug=>'Statistics and Charts'});
1.89      matthew  1180:             &Apache::lonsubmissiontimeanalysis::BuildSubmissionTimePage($r,$c);
1.97      matthew  1181:         } elsif($GoToPage eq 'student_submission_reports') {
1.98      matthew  1182:             &Apache::lonhtmlcommon::add_breadcrumb
                   1183:                 ({href=>
                   1184:                   '/adm/statistics?reportselected=student_submission_reports',
1.99    ! matthew  1185:                   text=>&mt('Student Submission Reports'),
1.98      matthew  1186:                   faq=>139,bug=>'Statistics and Charts'});
1.97      matthew  1187:             &Apache::lonstudentsubmissions::BuildStudentSubmissionsPage($r,$c);
1.94      matthew  1188:         } elsif($GoToPage eq 'correct_problems_plot') {
1.98      matthew  1189:             &Apache::lonhtmlcommon::add_breadcrumb
                   1190:                 ({href=>'/adm/statistics?reportselected=correct_problems_plot',
1.99    ! matthew  1191:                   text=>&mt('Correct Problems Plot'),
1.98      matthew  1192:                   faq=>139,bug=>'Statistics and Charts'});
1.94      matthew  1193:             &Apache::loncorrectproblemplot::BuildCorrectProblemsPage($r,$c);
1.85      matthew  1194:         } elsif($GoToPage eq 'student_assessment') {
1.98      matthew  1195:             &Apache::lonhtmlcommon::clear_breadcrumbs();
                   1196:             &Apache::lonhtmlcommon::add_breadcrumb
                   1197:                 ({href=>'/adm/statistics?reportselected=student_assessment',
1.99    ! matthew  1198:                   text=>&mt('Chart'),
1.98      matthew  1199:                   faq=>139,bug=>'Statistics and Charts'});
1.85      matthew  1200:             &Apache::lonstudentassessment::BuildStudentAssessmentPage($r,$c);
                   1201:         }
                   1202:         #
                   1203:         $r->print("</form>\n");
1.65      matthew  1204:     }
                   1205:     $r->print("</body>\n</html>\n");
                   1206:     $r->rflush();
                   1207:     #
1.27      stredwic 1208:     return OK;
1.1       albertel 1209: }
1.65      matthew  1210: 
1.1       albertel 1211: 1;
1.59      matthew  1212: 
1.65      matthew  1213: #######################################################
                   1214: #######################################################
                   1215: 
1.59      matthew  1216: =pod
                   1217: 
                   1218: =back
                   1219: 
                   1220: =cut
1.65      matthew  1221: 
                   1222: #######################################################
                   1223: #######################################################
1.59      matthew  1224: 
1.1       albertel 1225: __END__
1.31      minaeibi 1226: 

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