Computation Progress
'+ - ''+ - ''); - popwin.document.close(); - -ENDPOP +=item &output_html_grouped_by_sequence() - $r->rflush(); -} +Presents the statistics data as an html table organized by the order +the assessments appear in the course. -# update progress -sub Update_PrgWin { - my ($totalStudents,$index,$name,$r)=@_; - $r->print(''); - $r->rflush(); -} +=cut -# close Progress Line -sub Close_PrgWin { - my ($r)=@_; - $r->print(''); - $r->rflush(); -} - -# ------ Dump the Student's DB file and handling the data for statistics table -sub ExtractStudentData { - my ($cache,$name,$list,$Discuss,$r,$discriminant)=@_; - my $totalTries = 0; - my $totalAwarded = 0; - my $spent=0; - my $spent_yes=0; - my $TotDiscuss=0; - my $TotalOpend = 0; - my $ProbSolved = 0; - my $ProbTot = 0; - my $TotFirst = 0; - my $TimeTot = 0; - my $Discussed=0; - my $discrim=''; - my $tempSequenceOrder=100; - -#$Apache::lonxml::debug=1; -#&Apache::lonhomework::showhash(%$cache); -#$Apache::lonxml::debug=0; - - foreach my $sequence (split(':', $cache->{'orderedSequences'})) { - my $tempProblemOrder=100; - if($cache->{'ProblemStatisticsMaps'} ne 'All Maps' && - $cache->{'ProblemStatisticsMaps'} ne $cache->{$sequence.':title'}) { -# $r->print("sequences=$cache->{'orderedSequences'}"); -# $r->print("
".$cache->{$sequence.':title'}); - next; - } - $tempSequenceOrder++; - - #$discrim .= '&'; - foreach my $problemID (split(':', $cache->{$sequence.':problems'})) { -# $r->print("
problems=$cache->{$sequence.':problems'}"); - my $problem = $cache->{$problemID.':problem'}; -# $r->print("
$problemID === $problem"); - my $LatestVersion = $cache->{$name.':version:'.$problem}; - # Output dashes for all the parts of this problem if there - # is no version information about the current problem. - #if(!$LatestVersion) { - # foreach my $part (split(/\:/,$cache->{$sequence.':'. - # $problemID. - # ':parts'})) { - # $codes .= "-,"; - # $attempts .= "0,"; - # } - # next; - #} - - my %partData=undef; - $partData{'count'}=0; - # Initialize part data, display skips correctly - # Skip refers to when a student made no submissions on that - # part/problem. - foreach my $part (split(/\:/,$cache->{$sequence.':'. - $problemID. - ':parts'})) { - $tempProblemOrder++; - $partData{'count'}++; -# $r->print("
parts=$cache->{$sequence.':'.$problemID.':parts'}"); - $partData{$part.':order'}=$tempProblemOrder; - $partData{$part.':tries'}=0; - $partData{$part.':code'}='-'; +############################################### +############################################### +sub output_html_grouped_by_sequence { + my ($r) = @_; + my $problem_num = 0; + #$r->print(&ProblemStatisticsLegend()); + foreach my $sequence (&Apache::lonstatistics::Sequences_with_Assess()) { + next if ($sequence->{'num_assess'}<1); + $r->print("
".$sequence->{'title'}."
"); + $r->print('| '."\n");
+ $r->print(' |
'.$name.'---'.$ptr.'==='.$DoDiff); - - my $Fac = ($partData{$_.':tries'}) ? - ($partData{$_.':awarded'}/$partData{$_.':tries'}) : 0; - my $DisF; - if($Fac > 0 && $Fac < 1) { - $DisF = sprintf( "%.4f", $Fac ); - } else { - $DisF = $Fac; + if ($a->{$sortby} eq 'nan') { + if ($b->{$sortby} ne 'nan') { + $retvalue = 1; + } } - - if ($Discuss->{"$name:$problem"}) { - $TotDiscuss++; - $Discussed=1; + if ($retvalue eq '0') { + $retvalue = $b->{$sortby} <=> $a->{$sortby} || + lc($a->{'title'}) <=> lc($b->{'title'}) || + lc($a->{'part'}) <=> lc($b->{'part'}); } - my $time = $cache->{"$name:$LatestVersion:$problem:timestamp"}; - $discrim .= $tempSequenceOrder.'@'.$pOrder.'='.$DisF.'+'.$Yes; - $ptr .= '&'.$partData{$_.':tries'}. - '&'.$partData{$_.':wrong'}. - '&'.$partData{$_.':code'}; - push (@$list, $ptr."&$Discussed"); -# $r->print('
'.$_.$name.'---'.$ptr); - -#### if ($DoDiff>0.85) { + $retvalue; + } @Statsarray; + } + } + $option .= 'no part' if (! $show_part); + my $num_output = 0; + # + # output the headers + $r->print('
| '."\n");
+ $r->print(' |
| '."\n");
+ $r->print(' |
'.$name.'---'.$problem.'---'.$spe); -# } - $TotalOpend++; - $ProbTot++; +=pod - $tempProblemOrder++; - } +=item &output_excel() + +Presents the statistical data in an Excel 95 compatable spreadsheet file. + +=cut + +############################################### +############################################### +sub output_excel { + my ($r) = @_; + my $filename = '/prtspool/'. + $ENV{'user.name'}.'_'.$ENV{'user.domain'}.'_'. + time.'_'.rand(1000000000).'.xls'; + # + my ($starttime,$endtime) = &Apache::lonstathelpers::get_time_limits(); + # + my $excel_workbook = undef; + my $excel_sheet = undef; + # + my $rows_output = 0; + my $cols_output = 0; + # + # Create sheet + $excel_workbook = Spreadsheet::WriteExcel->new('/home/httpd'.$filename); + # + # Check for errors + if (! defined($excel_workbook)) { + $r->log_error("Error creating excel spreadsheet $filename: $!"); + $r->print(&mt("Problems creating new Excel file. ". + "This error has been logged. ". + "Please alert your LON-CAPA administrator.")); + return ; + } + # + # The excel spreadsheet stores temporary data in files, then put them + # together. If needed we should be able to disable this (memory only). + # The temporary directory must be specified before calling 'addworksheet'. + # File::Temp is used to determine the temporary directory. + $excel_workbook->set_tempdir($Apache::lonnet::tmpdir); + # + # Add a worksheet + my $sheetname = $ENV{'course.'.$ENV{'request.course.id'}.'.description'}; + if (length($sheetname) > 31) { + $sheetname = substr($sheetname,0,31); + } + $excel_sheet = $excel_workbook->addworksheet( + &Apache::loncommon::clean_excel_name($sheetname) + ); + # + # Put the course description in the header + $excel_sheet->write($rows_output,$cols_output++, + $ENV{'course.'.$ENV{'request.course.id'}.'.description'}); + $cols_output += 3; + # + # Put a description of the sections listed + my $sectionstring = ''; + my @Sections = @Apache::lonstatistics::SelectedSections; + if (scalar(@Sections) > 1) { + if (scalar(@Sections) > 2) { + my $last = pop(@Sections); + $sectionstring = "Sections ".join(', ',@Sections).', and '.$last; + } else { + $sectionstring = "Sections ".join(' and ',@Sections); + } + } else { + if ($Sections[0] eq 'all') { + $sectionstring = "All sections"; + } else { + $sectionstring = "Section ".$Sections[0]; } } - my $pstr; - if($totalTries) { - my $DisFac = ($totalAwarded/$totalTries); - my $DisFactor = sprintf( "%.4f", $DisFac ); - my $TS = sprintf( "%.2f", $spent ); - my $TS_yes = sprintf( "%.2f", $spent_yes ); - $pstr=$DisFactor.':'.$name.':'.$ProbTot.':'.$TotalOpend.':'. - $totalTries.':'.$ProbSolved.':'.$TotFirst.':'. - $TS_yes.':'.$TS.':'.$TotDiscuss; - (%$discriminant)->{$pstr}=$discrim; + $excel_sheet->write($rows_output,$cols_output++,$sectionstring); + $cols_output += scalar(@Sections); + # + # Time restrictions + my $time_string; + if (defined($starttime)) { + # call localtime but not lonlocal:locallocaltime because excel probably + # cannot handle localized text. Probably. + $time_string .= 'Data collected from '.localtime($time_string); + if (defined($endtime)) { + $time_string .= ' to '.localtime($endtime); + } + $time_string .= '.'; + } elsif (defined($endtime)) { + # See note above about lonlocal:locallocaltime + $time_string .= 'Data collected before '.localtime($endtime).'.'; + } + + # + # Put the date in there too + $excel_sheet->write($rows_output,$cols_output++, + 'Compiled on '.localtime(time)); + # + $rows_output++; + $cols_output=0; + # + # Long Headersheaders + foreach my $field (@Fields) { + next if ($field->{'name'} eq 'problem_num'); + if (exists($field->{'long_title'})) { + $excel_sheet->write($rows_output,$cols_output++, + $field->{'long_title'}); + } else { + $excel_sheet->write($rows_output,$cols_output++,''); + } + } + $rows_output++; + $cols_output=0; + # Brief headers + foreach my $field (@Fields) { + next if ($field->{'name'} eq 'problem_num'); + # Use english for excel as I am not sure how well excel handles + # other character sets.... + $excel_sheet->write($rows_output,$cols_output++,$field->{'title'}); + } + $rows_output++; + # + # Write the data + my $problem_num=0; + foreach my $sequence (&Apache::lonstatistics::Sequences_with_Assess()) { + next if ($sequence->{'num_assess'}<1); + foreach my $resource (@{$sequence->{'contents'}}) { + next if ($resource->{'type'} ne 'assessment'); + foreach my $part (@{$resource->{'parts'}}) { + $cols_output=0; + $problem_num++; + my $data = &get_statistics($sequence,$resource,$part, + $problem_num); + # + if (!defined($part) || $part eq '') { + $part = ' '; + } + foreach my $field (@Fields) { + next if ($field->{'name'} eq 'problem_num'); + $excel_sheet->write($rows_output,$cols_output++, + $data->{$field->{'name'}}); + } + $rows_output++; + } + } } + # + # Write the excel file + $excel_workbook->close(); + # Tell the user where to get their excel file + $r->print('
'. + ''. + &mt('Your Excel Spreadsheet').''."\n"); + $r->rflush(); + return; } +############################################### +############################################### +=pod -sub MySort { - my $pos=shift; - if ( $pos > 0 ) { - if ($ENV{'form.order'} eq 'Descending') {$b <=> $a;} - else { $a <=> $b; } - } - else { -# if ($ENV{'form.order'} eq 'Descending') {$b cmp $a;} -# else { $a cmp $b; } - $a cmp $b; - } -} +=item &statistics_html_table_data() +Help function used to format the rows for HTML table output. +=cut -sub BuildStatisticsTable { - my ($cache,$upper,$lower,$list,$headings,$students,$r,$color)=@_; - my $NoElements = scalar @$list; - my @list=sort(@$list); - -#6666666 -# my $file="/home/httpd/perl/tmp/183d.txt"; -# open(OUT, ">$file"); -#6666666 -## &Apache::lonstatistics::Create_PrgWin($r); -##777777 -## my (%Activity) = &LoadActivityLog(); -## $r->print(''); -## my ($doDiffFile) = &LoadDoDiffFile(); - -##777777 -## $Str .= &Classify($discriminantFactor, $students); - - my $p_count = 0; - my $dummy; - my $p_val; - my $ResId; - my %TempCache; - my $cIdx=0; - - foreach my $sequence (split(':', $cache->{'orderedSequences'})) { - if($cache->{'ProblemStatisticsMaps'} ne 'All Maps' && - $cache->{'ProblemStatisticsMaps'} ne $cache->{$sequence.':title'}) { - next; - } - &CreateProblemStatisticsTableHeading($cache->{'DisplayFormat'}, - $cache->{$sequence.':source'}, - $cache->{$sequence.':title'}, - $headings,$r); - my ($tar,$Tries,$Wrongs,$Code,$Disc)=split(/\&/, - $list[$cIdx]); - my ($SqOrd,$PrOrd,$Prob)=split(/\:/,$tar); - $sequence+=100; - while ($SqOrd==$sequence && $cIdx<$NoElements) { - my %storestats=(); - my $pOrd=$PrOrd; - my $Temp = $Prob; - my $MxTries = 0; - my $TotalTries = 0; - my $YES = 0; - my $Incorrect = 0; - my $Override = 0; - my $StdNo = 0; - my $DiscNo=0; - my @StdLst; - while ($pOrd==$PrOrd && $cIdx<$NoElements) - { - $cIdx++; - $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 '-' ) { $StdNo--; } - ($tar,$Tries,$Wrongs,$Code,$Disc)=split(/\&/, - $list[$cIdx]); - ($SqOrd,$PrOrd,$Prob)=split(/\:/,$tar); - } - - $p_count++; - my $Dummy; - ($ResId,$Dummy)=split(/\*/,$Temp); - -###################### - $Temp = ''.$cache->{$ResId.':title'}.$Dummy.''; - - #$r->print('
rid='.$ResId); - #$r->print('
src='.$cache->{$ResId.':source'}); - #$r->print('
tit='.$cache->{$ResId.':title'}); - - my $res = &Apache::lonnet::declutter($cache->{$ResId.':source'}); - my $urlres=$res; - - $ResId=~/(\d+)\.(\d+)/; - my $Map = &Apache::lonnet::declutter( $cache->{'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*$StdDev; - } - -#--------------------- Compute the Discrimination Factors - my ($Up1,$Up2)=split(/\:/,$upper->{$sequence.'@'.$pOrd}); - my ($Lw1,$Lw2)=split(/\:/,$lower->{$sequence.'@'.$pOrd}); - - my $Dis1 = $Up1 - $Lw1; - my $Dis2 = $Up2 - $Lw2; - my $_D1 = sprintf("%.2f", $Dis1); - my $_D2 = sprintf("%.2f", $Dis2); - -#----------------- 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 = $sequence.'@'.$pOrd.'&'.$Temp.'&'.$StdNo.'&'. - $TotalTries.'&'.$MxTries.'&'.$Avg.'&'. - $YES.'&'.$Override.'&'.$Wrng.'&'.$DoD.'&'. - $SD.'&'.$Sk.'&'.$_D1.'&'.$_D2.'&'. - $DiscNo.'&'.$Prob; - -#####{$sequence.'@'.$pOrd} - $TempCache{'CacheTable:'.($p_count-1)}=$join; - -#6666666 -# $r->print('
'.$out.'&'.$DoD); -# print (OUT $out.'@'.$DoD.'&'); -#6666666 - - $urlres=~/^(\w+)\/(\w+)/; - if ($StdNo) { - &Apache::lonnet::put('resevaldata',\%storestats,$1,$2); - } -#-------------------------------- Row of statistical table - &TableRow($cache,$join,$cIdx,($p_count-1),$r,$color, - \%TempCache); - } - $TempCache{'ProblemCount'}=$p_count; - &CloseTable($cache,$r); - } -### &Close_PrgWin(); -#666666 -# close( OUT ); -#666666 - return \%TempCache; +############################################### +############################################### +sub statistics_html_table_data { + my ($data,$options) = @_; + my $row = ''; + foreach my $field (@Fields) { + next if ($options =~ /no $field->{'name'}/); + $row .= '
'.$list[$k]); +sub statistics_table_header { + my ($options) = @_; + my $header_row; + foreach my $field (@Fields) { + next if ($options =~ /no $field->{'name'}/); + $header_row .= '
".&Apache::loncommon::DrawBarGraph($title, + 'Problem Number', + $yaxis, + $Max, + undef, # colors + undef, # labels + \@Data)."
\n"); + # + # Print out the data + $ENV{'form.sortby'} = 'Contents'; +# &output_html_ungrouped($r); + return; } +######################################################## +######################################################## =pod - if ( $Pos == 0 ) { - foreach my $sequence (split(':', $cache->{'orderedSequences'})) { - if($cache->{'ProblemStatisticsMaps'} ne 'All Maps' && - $cache->{'ProblemStatisticsMaps'} ne $cache->{$sequence.':title'}) { - next; - } - &CreateProblemStatisticsTableHeading($cache->{'DisplayFormat'}, - $cache->{$sequence.':source'}, - $cache->{$sequence.':title'}, - $headings,$r); - - my ($tar,$Tries,$Wrongs,$Code,$Disc)=split(/\&/, - $list[$cIdx]); - my ($SqOrd,$PrOrd,$Prob)=split(/\:/,$tar); - $sequence+=100; - while ($SqOrd==$sequence && $cIdx<$NoElements) { - my %storestats=(); - my @lpr=split(/\&/,$pr); - for (my $i=1; $i<=$#lpr; $i++) { - my($Pre, $Post) = split(/\@/,$list[$nIndex]); - #$r->print(''.$Pre.'---'.$Post); - &TableRow($cache,$Post,$i,$nIndex,$color,\%GraphDat); - $nIndex++; - } - &CloseTable($cache); - } - } - else { - &CreateProblemStatisticsTableHeading($cache->{'DisplayFormat'}, - $cache->{$sequence.':source'}, - $cache->{$sequence.':title'}, - $headings,$r); - for ( my $nIndex = 0; $nIndex < $p_count; $nIndex++ ) { - my($Pre, $Post) = split(/\@/,$list[$nIndex]); - &TableRow($cache,$Post,$nIndex,$nIndex,$color,\%GraphDat); - } - &CloseTable($cache); - } +=item &get_statistics() - return \%TempCache; -} +Wrapper routine from the call to loncoursedata::get_problem_statistics. +Calls lonstathelpers::get_time_limits() to limit the data set by time. -=cut +Inputs: $sequence, $resource, $part, $problem_num +Returns: Hash reference with statistics data from +loncoursedata::get_problem_statistics. -sub TableRow { - my ($cache,$Str,$Idx,$RealIdx,$r,$color,$GraphDat)=@_; - my($PrOrd,$Temp,$StdNo,$TotalTries,$MxTries,$Avg,$YES,$Override, - $Wrng,$DoD,$SD,$Sk,$_D1,$_D2,$DiscNo,$Prob)=split(/\&/,$Str); - my $Ptr; - if($cache->{'DisplayFormat'} eq 'Display CSV Format') { - my ($ResId,$Dummy)=split(/\*/,$Prob); - $Ptr="\n".'
'. - "\n".'"'.($RealIdx+1).'",'. - "\n".'"'.$cache->{$ResId.':title'}.$Dummy.'",'. - "\n".'"'.$cache->{$ResId.':source'}.'",'. - "\n".'"'.$StdNo.'",'. - "\n".'"'.$TotalTries.'",'. - "\n".'"'.$MxTries.'",'. - "\n".'"'.$Avg.'",'. - "\n".'"'.$YES.'",'. - "\n".'"'.$Override.'",'. - "\n".'"'.$Wrng.'",'. - "\n".'"'.$DoD.'",'. - "\n".'"'.$SD.'",'. - "\n".'"'.$Sk.'",'. - "\n".'"'.$_D1.'",'. - "\n".'"'.$_D2.'"'. - "\n".'"'.$DiscNo.'"'; +=cut - $r->print("\n".$Ptr); - } else { - $Ptr="\n".'
$nIndex) $sortedList[$nIndex]"); - ($Problem,$tmp)=split(/\=/,$sortedList[$nIndex]); - @Dis=split(/\+/,$tmp); - my $Temp = $Problem; - do { - $nIndex++; - $nStudent++; - $Sum1 += $Dis[0]; - $Sum2 += $Dis[1]; - ($Problem,$tmp)=split(/\=/,$sortedList[$nIndex]); - @Dis=split(/\+/,$tmp); - } while ( $Problem eq $Temp && $nIndex < $Count ); - $Proc{$Temp}=($Sum1/$nStudent).':'.($Sum2/$nStudent); -# $r->print("
$nIndex) $Temp --> ($nStudent) $Proc{$Temp}"); - $Sum1=0; - $Sum2=0; - $nStudent=0; - } - - return %Proc; -} - -#------- Creating Discimination factor -sub Discriminant { - my ($discriminant,$r)=@_; -#$Apache::lonxml::debug=1; -#&Apache::lonhomework::showhash(%$discriminant); -#$Apache::lonxml::debug=0; - my @discriminantKeys=keys(%$discriminant); - my $Count = scalar @discriminantKeys; - - my $UpCnt = int(0.27*$Count); - my $low=0; - my $up=$Count-$UpCnt; - my @UpList=(); - my @LowList=(); - - $Count=0; - foreach my $key (sort(@discriminantKeys)) { - $Count++; - if($low < $UpCnt || $Count > $up) { - $low++; - my $str=$discriminant->{$key}; - foreach(split(/\&/,$str)){ - if($_) { - if($low<$UpCnt) { push(@LowList,$_); } - else { push(@UpList,$_); } - } - } - } - } - my %DisUp = &ProcessDiscriminant(\@UpList,$r); - my %DisLow = &ProcessDiscriminant(\@LowList,$r); - - return (\%DisUp, \%DisLow); -} - #---- END Problem Statistics Web Page ---------------------------------------- -#---- Problem Statistics Graph Web Page -------------------------------------- - -# ------------------------------------------- Prepare data for Graphical chart - -sub BuildDiffGraph { - my ($r)=@_; - - my $graphData = &GetGraphData('DiffGraph', $r); - $r->print('
');
-
- return;
-}
-
-sub BuildWrongGraph {
- my ($r)=@_;
-
- my $graphData = &GetGraphData('WrongGraph', $r);
- $r->print('');
-
- return;
-}
-
-
-sub GetGraphData {
- my ($ylab,$r,%GraphDat)=@_;
- my $Col;
- my $data='';
- my $count = 0;
- my $Max = 0;
- my $cid=$ENV{'request.course.id'};
- my $GraphDB = "/home/httpd/perl/tmp/$ENV{'user.name'}".
- "_$ENV{'user.domain'}_$cid\_graph.db";
- foreach (keys %GraphDat) {delete $GraphDat{$_};}
- if (-e "$GraphDB") {
- if (tie(%GraphDat,'GDBM_File',"$GraphDB",&GDBM_READER,0640)) {
- if ( $ylab eq 'DoDiff Graph' ) {
- $ylab = 'Degree-of-Difficulty';
- $Col = 0;
- }
- else {
- $ylab = 'Wrong-Percentage';
- $Col = 1;
- }
- foreach (sort NumericSort keys %GraphDat) {
- my @Temp=split(/\:/,$GraphDat{$_});
- my $inf = $Temp[$Col];
- if ( $Max < $inf ) {$Max = $inf;}
- $data .= $inf.',';
- $count++;
- }
- if ( $Max > 1 ) {
- $Max += (10 - $Max % 10);
- $Max = int($Max);
- }
- else { $Max = 1; }
- untie(%GraphDat);
- my $Course = $ENV{'course.'.$cid.'.description'};
- $Course =~ s/\ /"_"/eg;
- my $GData=$Course.'&'.'Problems'.'&'.$ylab.'&'.
- $Max.'&'.$count.'&'.$data;
- }
- else {
- $r->print("Unable to tie hash to db file");
- }
- }
-}
-
-
1;
__END__