Computation Progress
'+ - ''+ - ''); - popwin.document.close(); - -ENDPOP - $r->rflush(); -# ---------------------------- Gathering the Data of students' tries - my $index; - for ($index=0;$index<=$#students;$index++) { -#----------- update progress - $r->print(''); - $r->rflush(); - &ExtractStudentData($students[$index],$cid); - } -#--------------------- close Progress Line - $r->print(''); - $r->rflush(); -# -------------------- sorting the Data - @list = sort (@list); - - $OpSel2=''; - $OpSel1='selected'; - - $p_count = 0; - my $nIdx = 0; - my $dummy; - my $p_val; - my $ResId; - my $NoElements = $#list + 1; -#-------------------------------- loop for data representation - foreach (sort keys %mapsort) { - my ($Hid,$pr)=split(/\:/,$mapsort{$_}); - my @lpr=split(/\&/,$pr); - &CreateTable(1,$Hid); - for (my $i=1; $i<=$#lpr; $i++) { - my %storestats=(); - my ($PrOrd,$Prob,$Tries,$Wrongs,$Code)=split(/\:/,$list[$nIdx]); - my $Temp = $Prob; - my $MxTries = 0; - my $TotalTries = 0; - my $YES = 0; - my $Incorrect = 0; - my $Override = 0; - my $StdNo = 0; - my @StdLst; - while ( $PrOrd == $lpr[$i] ) - { - $nIdx++; - $StdNo++; - $StdLst[ $StdNo ] = $Tries; - $TotalTries += $Tries; - if ( $MxTries < $Tries ) { $MxTries = $Tries; } - if ( $Code eq 'C' ){ $YES++; } - elsif( $Code eq 'I' ) { $Incorrect++; } - elsif( $Code eq 'O' ) { $Override++; } - elsif( $Code eq 'U' ) { $StdNo--; } - ($PrOrd,$Prob,$Tries,$Wrongs,$Code)=split(/\:/,$list[$nIdx]); - } - - $p_count++; - my $Dummy; - ($ResId,$Dummy)=split(/\*/,$Temp); +sub current_student { + return $curr_student; +} - $Temp = ''.$hash{'title_'.$ResId}.$Dummy.''; - - my $res = &Apache::lonnet::declutter($hash{'src_'.$ResId}); - my $urlres=$res; - $ResId=~/(\d+)\.(\d+)/; - my $Map = &Apache::lonnet::declutter( $hash{'map_id_'.$1} ); - $urlres=$Map; - - $res = ''.$res.''; - #$Map = ''.$res.''; - -#------------------------ Compute the Average of Tries about one problem - my $Average = ($StdNo) ? $TotalTries/$StdNo : 0; - - $storestats{$ENV{'request.course.id'}.'___'.$urlres.'___timestamp'}=time; - $storestats{$ENV{'request.course.id'}.'___'.$urlres.'___stdno'}=$StdNo; - $storestats{$ENV{'request.course.id'}.'___'.$urlres.'___avetries'}=$Average; - -#-------------------------------- Compute percentage of Wrong tries - my $Wrong = ( $StdNo ) ? 100 * ( $Incorrect / $StdNo ) : 0; - -#-------------------------------- Compute Standard Deviation - my $StdDev = 0; - if ( $StdNo > 1 ) { - for ( my $n = 0; $n < $StdNo; $n++ ) { - my $Dif = $StdLst[ $n ]-$Average; - $StdDev += $Dif*$Dif; - } - $StdDev /= ( $StdNo - 1 ); - $StdDev = sqrt( $StdDev ); - } - -#-------------------------------- Compute Degree of Difficulty - my $DoDiff = 0; - if( $TotalTries > 0 ) { - $DoDiff = 1 - ( ( $YES + $Override ) / $TotalTries ); -# $DoDiff = ($TotalTries)/($YES + $Override+ 0.1); - } - - $storestats{$ENV{'request.course.id'}.'___'.$urlres.'___difficulty'}=$DoDiff; - -#-------------------------------- Compute the Skewness - my $Skewness = 0; - my $Sum = 0; - if ( $StdNo > 0 && $StdDev > 0 ) { - for ( my $n = 0; $n < $StdNo; $n++ ) { - my $Dif = $StdLst[ $n ]-$Average; - $Skewness += $Dif*$Dif*$Dif; - } - $Skewness /= $StdNo; - $Skewness /= $StdDev*$StdDev*$StdDev; - } -#----------------- Some restition in presenting the float numbers - my $Avg = sprintf( "%.2f", $Average ); - my $Wrng = sprintf( "%.1f", $Wrong ); - my $SD = sprintf( "%.1f", $StdDev ); - my $DoD = sprintf( "%.2f", $DoDiff ); - my $Sk = sprintf( "%.1f", $Skewness ); - my $join = $PrOrd.':'.$Temp.':'.$StdNo.':'. - $TotalTries.':'.$MxTries.':'.$Avg.':'. - $YES.':'.$Override.':'.$Wrng.':'.$DoD.':'. - $SD.':'.$Sk.':'.$Prob; - $CachData{($p_count-1)}=$join; - - $urlres=~/^(\w+)\/(\w+)/; - if ($StdNo) { - &Apache::lonnet::put('resevaldata',\%storestats,$1,$2); - } -#-------------------------------- Row of statistical table - if ( $DiscFlag == 0 ) { - &TableRow($join,$i,($p_count-1)); - } - } - &CloseTable(); - } -} -sub Cache_Statistics { - my @list = (); - my $Useful; - my $UnUseful; - my %myHeader = reverse( %Header ); - $Pos = $myHeader{$ENV{'form.sort'}}; - if ($Pos > 0) {$Pos++;} - $p_count = 0; - foreach my $key( keys %CachData) { - my @Temp=split(/\:/,$CachData{$key}); - if ( $Pos == 0 ) { - ($UnUseful,$Useful)=split(/\>/,$Temp[$Pos]); - } - else { - $Useful = $Temp[$Pos]; - } - $list[$p_count]=$Useful.'&'.$CachData{$key}; - $p_count++; - } - - @list = sort MySort (@list); - - my $nIdx=0; - - if ( $Pos == 0 ) { - foreach (sort keys %mapsort) { - my ($Hid,$pr)=split(/\:/,$mapsort{$_}); - &CreateTable(1,$Hid); - my @lpr=split(/\&/,$pr); - for (my $i=1; $i<=$#lpr; $i++) { - my($Pre, $Post) = split(/\&/,$list[$nIdx]); - &TableRow($Post,$i,$nIdx); - $nIdx++; - } - &CloseTable(); - } - } - else { - &CreateTable(0); - for ( my $nIdx = 0; $nIdx < $p_count; $nIdx++ ) { - my($Pre, $Post) = split(/\&/,$list[$nIdx]); - &TableRow($Post,$nIdx,$nIdx); - } - &CloseTable(); - } +sub previous_student { + return $prev_student; } -sub TableRow { - my ($Str,$Idx,$RealIdx)=@_; - my($PrOrd,$Temp,$StdNo,$TotalTries,$MxTries,$Avg,$YES, - $Override,$Wrng,$DoD,$SD,$Sk,$Prob)=split(/\:/,$Str); - $r->print( "\n".''); - $section{$ssec}=$ssec; - if ($CurSec eq 'All Sections' || $ssec eq $CurSec) { - $students[$StudNo]=$name; - $StuBox{$sname}=$ssec; - } - $StudNo++; - } - } - } - else { - $r->print('
Could not access course data
'); - } - $r->print("Total number of students : ".($#students+1)); - $r->rflush(); -# --------------- Find all assessments and put them into some linear-like order - &tracetable($firstres,'&'.$lastres.'&'); -# my $c=0; -# foreach (sort keys %mapsort) { -# $r->print(''.$c.')'.$_.' ... '.$mapsort{$_}); -# $c++; -# } -#foreach(@cols) { -# $c++; -# $r->print('
'.$cols[$c]); -#} -#$r->print('
Count = '.$c); +sub selected_sequences_with_assessments { + my ($mode) = @_; + $mode = 'selected' if (! defined($mode)); + my $navmap = Apache::lonnavmaps::navmap->new(); + if (!defined($navmap)) { + return ('Can not open Coursemap'); + } + # + my @sequences = $navmap->retrieveResources(undef, + sub { shift->is_map(); },1,0,1); + my $toplevelseq = $navmap->getById('0.0'); + if (!grep(/^\Q$toplevelseq\E$/,@sequences)) { + unshift(@sequences,$toplevelseq); + } + + my @sequences_with_assessments; + foreach my $sequence (@sequences) { + if ($navmap->hasResource($sequence,sub { shift->is_problem(); },0,1)){ + push(@sequences_with_assessments,$sequence); + } } + # + my @sequences_to_show; + foreach my $sequence (@sequences_with_assessments) { + if ($mode eq 'all') { + push (@sequences_to_show,$sequence); + } elsif ($mode eq 'selected') { + foreach my $map_symb (&get_selected_maps('Maps')) { + if ($sequence->symb eq $map_symb || $map_symb eq 'all'){ + push (@sequences_to_show,$sequence); + last; # Only put it in once + } + } + } -# ------------------------------------------------------------- End render page - else { - $r->print('
Undefined course sequence
'); } - &MapSecOptions(); + return $navmap,@sequences_to_show; } -sub Menu { - my $InpStr = $ENV{'form.sort'}; - if ( $InpStr eq 'DoDiff Graph' || $InpStr eq '%Wrong Graph' ) { - &GetGraphData($InpStr); - $r->print('
');
- }
- else {
- $r->print('
');
-# ---------------------------------------------------------------- Course title
- $r->print('Course : "'. - $ENV{'course.'.$ENV{'request.course.id'}. - '.description'}.'"
'.localtime().'
'); -# ------------------------------- This is going to take a while, produce output - $r->rflush(); - - $r->print("\n".''. - "\n".''. - "\n".''); - $r->rflush(); +sub map_select { + my ($elementname,$status,$numvisible)=@_; + if ($numvisible < 1) { + return; + } + # + # Set up array of selected items + my @selected_maps = &get_selected_maps($elementname); + # + # Build the form element + my $form = "\n"; + $form .= '\n"; + return $form; } -sub StudentOptions { - my $OpSel5=''; - $CurStu = $ENV{'form.student'}; - if ( $CurStu eq '' ) { - $CurStu = 'All Students'; - $OpSel5 = 'selected'; - } - my $Ptr =''; -# ----------------------------------- Loading the Students Combobox - $Ptr .= 'Select Student'."\n". - ''; - $Ptr .= '
'; - $r->print( $Ptr ); - $r->rflush(); + +sub SectionSelect { + my ($elementname,$status,$numvisible)=@_; + if ($numvisible < 1) { + return; + } + # + # Make sure we have the data we need to continue + if (! @Sections) { + &PrepareClasslist() + } + # + # Build the form element + my $Str = "\n"; + $Str .= '\n"; + return $Str; } -sub GetStatus { - $OpSelDis1=''; - $OpSelDis2=''; - $OpSel1=''; - $OpSel2=''; - $OpSel3=''; - $OpSel4=''; - -# if ( $ENV{'form.DisType'} eq 'Total Number of Correct Answers' ) { -# $OpSelDis1='selected'; -# $CurDis=0; -# } -# else { $OpSel2 = 'selected'; $CurDis = 1;} - - if ( $ENV{'form.order'} eq 'Descending' ) { $OpSel2='selected'; } - else { $OpSel1 = 'selected'; } - - my %myHeader = reverse( %Header ); - $Pos = $myHeader{$ENV{'form.sort'}}; - if ($Pos == 0) { - $OpSel1 = 'selected'; - $ENV{'form.order'}='Ascendig'; - } - - $CurMap = $ENV{'form.maps'}; - if ( $CurMap eq '' ) { - $CurMap = 'All Maps'; - $OpSel3 = 'selected'; - } - $CurSec = $ENV{'form.section'}; - if ( $CurSec eq '' ) { - $CurSec = 'All Sections'; - $OpSel4 = 'selected'; +sub GroupSelect { + my ($elementname,$status,$numvisible)=@_; + if ($numvisible < 1) { + return; + } + # + # Make sure we have the data we need to continue + if (! @Groups) { + &PrepareClasslist(); + } + # + # Build the form element + my $Str = "\n"; + $Str .= '\n"; } -sub MapSecOptions { -# ----------------------------------- Loading the Maps Combobox - my $Ptr = '
'; - $Ptr .= '
'; - $Ptr .= '
Select Map '."\n". - ''; - $Ptr .= ' '; - -# ----------------------------------- Loading the Sections Combobox - $Ptr .= '
Select Section'."\n". - ''."\n"; - $r->print( $Ptr ); + $Str .= '
'.&mt('Select One Student').'
' + .''.&mt("Click on a student's name or username to view their chart").'
' + .&Apache::loncommon::start_data_table() + .&Apache::loncommon::start_data_table_header_row(); + foreach my $field (@Fields) { + $Str .= ''.&mt('Please select a report to generate').'
'; + foreach my $reportdata (@reports) { + $Str .=''. + $reportdata->{'name'}."
\n"; + $Str .= ' '.(' 'x8).$reportdata->{'short_description'}. + "\n"; + } + $Str .="\n"; + # + return $Str; +} + - if (&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'})) { -# ------------------------------------------- Set document type for header only - if ($r->header_only) { - if ($ENV{'browser.mathml'}) { - $r->content_type('text/xml'); - } - else { - $r->content_type('text/html'); - } - $r->send_http_header; - return OK; - } - my $requrl=$r->uri; -# ----------------------------------------------------------------- Tie db file - - undef %hash; - - if ($ENV{'request.course.fn'}) { - my $fn=$ENV{'request.course.fn'}; - if (-e "$fn.db") { - if (tie(%hash,'GDBM_File',"$fn.db",&GDBM_READER,0640)) { -# ------------------------------------------------------------------- Hash tied - $r->content_type('text/html'); - $r->send_http_header; - &Menu(); - } - else { - $r->content_type('text/html'); - $r->send_http_header; - $r->print('Coursemap undefined.'); - } -# ------------------------------------------------------------------ Untie hash - unless (untie(%hash)) { - &Apache::lonnet::logthis("WARNING: ". - "Could not untie coursemap $fn (browse)."); - } - -# -------------------------------------------------------------------- All done - return OK; -# ----------------------------------------------- Errors, hash could no be tied - } - } - else { - $ENV{'user.error.msg'}="$requrl:bre:0:0:Course not initialized"; - return HTTP_NOT_ACCEPTABLE; - } - } - else { - $ENV{'user.error.msg'}= - $r->uri.":vgr:0:0:Cannot view grades for complete course"; - return HTTP_NOT_ACCEPTABLE; +sub handler { + my $r=shift; + my $c = $r->connection(); + # + # Check for overloading + my $loaderror=&Apache::lonnet::overloaderror($r); + if ($loaderror) { return $loaderror; } + $loaderror= + &Apache::lonnet::overloaderror($r, + $env{'course.'.$env{'request.course.id'}.'.home'}); + if ($loaderror) { return $loaderror; } + # + # Check for access + if (! &Apache::lonnet::allowed('vgr',$env{'request.course.id'})) { + $env{'user.error.msg'}= + $r->uri.":vgr:0:0:Cannot view grades for complete course"; + if (! &Apache::lonnet::allowed('vgr', + $env{'request.course.id'}.'/'.$env{'request.course.sec'})) { + $env{'user.error.msg'}= + $r->uri.":vgr:0:0:Cannot view grades with given role"; + return HTTP_NOT_ACCEPTABLE; + } + } + # + # Send the header + &Apache::loncommon::no_cache($r); + &Apache::loncommon::content_type($r,'text/html'); + $r->send_http_header; + if ($r->header_only) { return OK; } + # + # Extract form elements from query string + &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'}, + ['sort','reportSelected', + 'SelectedStudent']); + # + # Give the LON-CAPA page header + my $style = <'. + &mt('Unable to connect to database!'). + '
'); + $r->print('' + .&mt('Please notify the server administrator [_1]', + ,''.$serveradmin.'') + .'
'); + $r->print(''. + &mt('Course Statistics and Charts cannot be '. + 'retrieved until the database is restarted. '. + 'Your data is intact but cannot be displayed '. + 'at this time.').'
'); + $r->print(&Apache::loncommon::end_page()); + return; + } + # + # Clean out the caches + if (exists($env{'form.ClearCache'})) { + &Apache::loncoursedata::delete_caches($env{'requres.course.id'}); + } + # + # Begin form output + $r->print('\n"); } + $r->print(&Apache::loncommon::end_page()); + $r->rflush(); + # + return OK; } + 1; + __END__ +=pod + +=head1 NAME + +lonstatistics + +=head1 SYNOPSIS + +Main handler for statistics and chart. + +This is part of the LearningOnline Network with CAPA project +described at http://www.lon-capa.org. + + +=head1 PACKAGE VARIABLES + +=over + +=item @FullClasslist The full classlist + +=item @Students The students we are concerned with for this invocation + +=item @Sections The sections available in this class + +=item @Groups The groups available in the class + +=item $curr_student The student currently being examined + +=item $prev_student The student previous in the classlist + +=item $next_student The student next in the classlist + +=back + +=head1 SUBROUTINES + +=over + +=item &clear_classlist_variables() + +undef the following package variables: + +=over 4 + +=item * @FullClasslist + +=item * @Students + +=item * @Sections + +=item * @Groups + +=item * %StudentData + +=item * @StudentDataOrder + +=item * @SelectedStudentData + +=item * $curr_student + +=item * $prev_student + +=item * $next_student + +=back + +=item &PrepareClasslist() + +Build up the classlist information. The classlist information is kept in +the following package variables: + +=over 4 + +=item * @FullClasslist + +=item * @Students + +=item * @Sections + +=item * @Groups + +=item * %StudentData + +=item * @SelectedStudentData + +=item * $curr_student + +=item * $prev_student + +=item * $next_student + +=back + +$curr_student, $prev_student, and $next_student may not be defined, depending +upon the calling context. + +=item get_selected_sections() + +Returns an array of the selected sections + +=item get_selected_groups() + +Returns an array of the selected groups + +=item §ion_and_enrollment_description() + +Returns a string describing the currently selected section(s), group(s) and +access status. + +Inputs: mode = 'plaintext' or 'localized' (defaults to 'localized') + 'plaintext' is used for example in Excel spreadsheets. +Returns: scalar description string. + +=item section_or_group_text() + +=item get_students() + +Returns a list of the selected students + +=item ¤t_student() + +Returns a pointer to a hash containing data about the currently +selected student. + +=item &previous_student() + +Returns a pointer to a hash containing data about the student prior +in the list of students. Or something. + +=item &next_student() + +Returns a pointer to a hash containing data about the next student +to be viewed. + +=item &StudentDataSelect($elementname,$status,$numvisible,$selected) + +Returns html for a selection box allowing the user to choose one (or more) +of the fields of student data available (fullname, username, id, section, etc) + +=over 4 + +=item * $elementname The name of the HTML form element + +=item * $status 'multiple' or 'single' selection box + +=item * $numvisible The number of options to be visible + +=back + +=item &get_selected_maps($elementname) + +Input: Name of the