| '. - join(" | ",@Header)." | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
'."\n");
- $r->rflush();
- #
# Compile the data
my @Statsarray;
foreach my $sequence (@Sequences) {
@@ -322,58 +418,19 @@ sub output_html_ungrouped {
foreach my $resource (@{$sequence->{'contents'}}) {
next if ($resource->{'type'} ne 'assessment');
foreach my $part (@{$resource->{'parts'}}) {
- my ($num,$tries,$mod,$mean,$Solved,$solved,$DegOfDiff,$STD,
- $SKEW) = &Apache::loncoursedata::get_problem_statistics
- (undef,$resource->{'symb'},$part,
- $ENV{'request.course.id'});
- #
+ $problem_num++;
+ my $data = &get_statistics($sequence,$resource,$part,
+ $problem_num);
$show_part = 1 if ($part ne '0');
- $part = ' ' if ($part == 0);
#
- my $wrongpercent = 0;
- if (defined($num) && $num > 0) {
- $wrongpercent=int(10*100*($num-$Solved+$solved)/$num)/10;
- }
- push (@Statsarray,
- { 'sequence' => $sequence,
- 'resource' => $resource,
- 'Title' => $resource->{'title'},
- 'Part' => $part,
- '#Stdnts' => $num,
- 'Tries' => $tries,
- 'Mod' => $mod,
- 'Mean' => $mean,
- '#YES' => $Solved,
- '#yes' => $solved,
- '%Wrng' => $wrongpercent,
- 'DoDiff' => $DegOfDiff,
- 'S.D.' => $STD,
- 'Skew' => $SKEW,
- });
+ push (@Statsarray,$data);
}
}
}
#
- # Table Headers
- $r->print('
'.
- ''.
- $resource->{'title'}.''.
- ' | ';
- $row .= ''.$part.' | ' if ($show_part);
- foreach ($num,$tries) {
- $row .= ''.$_.' | ';
- }
- foreach ($mod,$mean) {
- $row .= ''.
- sprintf("%5.2f",$_).' | ';
- }
- foreach ($Solved,$solved) {
- $row .= ''.$_.' | ';
- }
- foreach ($wrongpercent) {
- $row .= ''.
- sprintf("%5.1f",$_).' | ';
- }
- foreach ($DegOfDiff,$STD,$SKEW) {
- $row .= ''.
- sprintf("%5.2f",$_).' | ';
- }
- return $row;
-}
+=pod
+
+=item &output_excel()
+Presents the statistical data in an Excel 95 compatable spreadsheet file.
+
+=cut
###############################################
###############################################
-
-sub BuildGraphicChart {
- my ($graph,$cacheDB,$courseDescription,$students,$courseID,$r,$c)=@_;
- my %cache;
- my $max;
- my $title = '';
- if($graph eq 'DoDiffGraph') {
- $title = 'Degree-of-Difficulty';
+sub output_excel {
+ my ($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 {
- $title = 'Wrong-Percentage';
- }
- my $currentSequence = -1;
- my $sortProblems = 'Sort Within Sequence';
- my ($result, $orderedProblems) =
- &InitializeProblemStatistics($cacheDB, $students, $courseID, $c, $r);
- if($result ne 'OK') {
- return;
- }
- my @values = ();
- unless(tie(%cache,'GDBM_File',$cacheDB,&GDBM_READER(),0640)) {
- return 'Unable to tie database.7';
- }
- foreach(@$orderedProblems) {
- my ($sequence,$problem,$part)=split(':', $_);
- if($cache{'StatisticsMaps'} ne 'All Maps' &&
- $cache{'StatisticsMaps'} ne $cache{$sequence.':title'}) {
- next;
- }
- if( $currentSequence == -1 ||
- ($sortProblems eq 'Sort Within Sequence' &&
- $currentSequence != $sequence)) {
- if($currentSequence != -1) {
- &DrawGraph(\@values,$courseDescription,$title,$max,$r);
- }
- if($sortProblems eq 'Sort Within Sequence') {
- $r->print(''.$cache{$sequence.':title'}.''."\n"); - } - $currentSequence = $sequence; - @values = (); - $max=0; - } - my $data = 0; - if($graph eq 'DoDiffGraph') { - $data = sprintf("%.2f", $cache{$_.':degreeOfDifficulty'}), + if ($Sections[0] eq 'all') { + $sectionstring = "All sections"; } else { - $data = sprintf("%.1f", $cache{$_.':percentWrong'}), + $sectionstring = "Section ".$Sections[0]; } - if($max < $data) { - $max = $data; + } + $excel_sheet->write($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++,''); } - push(@values, $data); } - untie(%cache); - &DrawGraph(\@values,$courseDescription,$title,$max,$r); - return; -} - -sub DrawGraph { - my ($values,$courseDescription,$title,$Max,$r)=@_; - my $sendValues = join(',', @$values); - my $sendCount = scalar(@$values); - $r->print(" The Maximum Value is: $Max"); - if ( $Max > 1 ) { - if ($Max % 10) { - if ( int($Max) < $Max ) { - $Max++; - $Max = int($Max); - } - } - #(10 - $Max % 10); - } else { $Max = 1; } - my @GData = ('','Problem_number',$title,$Max,$sendCount,$sendValues); -# $r->print(''."\n"); - $r->print(' '."\n"); - $r->print(' ).') ');
-# $r->print(' |
'); - } - if($sortProblems eq 'Sort Within Sequence') { - $r->print(''.$cache->{$sequence.':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 = ' '; } - $r->print('
| '."\n");
- $r->print(' |
'); } + # + # Write the excel file + $excel_workbook->close(); + # Tell the user where to get their excel file + $r->print('
'. + ''. + &mt('Your Excel Spreadsheet').''."\n"); + $r->rflush(); return; } -sub TableRow { - my ($displayFormat,$Str,$RealIdx,$r,$color)=@_; - my($ref,$title,$source,$StdNo,$TotalTries,$MxTries,$Avg,$YES,$Override, - $Wrng,$DoD,$SD,$Sk,$_D1,$_D2)=split(/\&/,$Str); - my $Ptr; - if($displayFormat eq 'Display CSV Format') { - $Ptr='"'.$RealIdx.'",'."\n". - '"'.$title.'",'."\n". - '"'.$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". - "
\n"; - $r->print("\n".$Ptr); - } else { - $Ptr='
".&Apache::loncommon::DrawBarGraph($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 + +=item &get_statistics() + +Wrapper routine from the call to loncoursedata::get_problem_statistics. +Calls lonstathelpers::get_time_limits() to limit the data set by time. + +Inputs: $sequence, $resource, $part, $problem_num + +Returns: Hash reference with statistics data from +loncoursedata::get_problem_statistics. + +=cut + +######################################################## +######################################################## +sub get_statistics { + my ($sequence,$resource,$part,$problem_num) = @_; + # + my ($starttime,$endtime) = &Apache::lonstathelpers::get_time_limits(); + my $symb = $resource->{'symb'}; + my $courseid = $ENV{'request.course.id'}; + # + my $data = &Apache::loncoursedata::get_problem_statistics + (\@Apache::lonstatistics::SelectedSections, + $Apache::lonstatistics::enrollment_status, + $symb,$part,$courseid,$starttime,$endtime); + $data->{'part'} = $part; + $data->{'problem_num'} = $problem_num; + $data->{'container'} = $sequence->{'title'}; + $data->{'title'} = $resource->{'title'}; + $data->{'title.link'} = $resource->{'src'}.'?symb='. + &Apache::lonnet::escape($resource->{'symb'}); + # + return $data; +} + +############################################### +############################################### + +=pod + +=item &ProblemStatisticsLegend() + +HELP This needs to be localized, or at least generated automatically. + +=cut + +############################################### +############################################### sub ProblemStatisticsLegend { my $Ptr = ''; $Ptr = '| Total number of tries for solving the problem.'; $Ptr .= ' | |
| '; - $Ptr .= 'Mod | '; + $Ptr .= 'Max Tries'; $Ptr .= 'Largest number of tries for solving the problem by a student.'; $Ptr .= ' |
| '; $Ptr .= 'Mean | ';