--- loncom/interface/statistics/lonproblemstatistics.pm 2002/08/14 16:18:55 1.25
+++ loncom/interface/statistics/lonproblemstatistics.pm 2003/03/26 21:55:18 1.46
@@ -1,7 +1,6 @@
# The LearningOnline Network with CAPA
-# (Publication Handler
#
-# $Id: lonproblemstatistics.pm,v 1.25 2002/08/14 16:18:55 stredwic Exp $
+# $Id: lonproblemstatistics.pm,v 1.46 2003/03/26 21:55:18 matthew Exp $
#
# Copyright Michigan State University Board of Trustees
#
@@ -26,394 +25,725 @@
# http://www.lon-capa.org/
#
# (Navigate problems for statistical reports
-# YEAR=2001
-# 5/5,7/9,7/25/1,8/11,9/13,9/26,10/5,10/9,10/22,10/26 Behrouz Minaei
-# 11/1,11/4,11/16,12/14,12/16,12/18,12/20,12/31 Behrouz Minaei
-# YEAR=2002
-# 1/22,2/1,2/6,2/25,3/2,3/6,3/17,3/21,3/22,3/26,4/7,5/6 Behrouz Minaei
-# 5/12,5/14,5/15,5/19,5/26,7/16,7/25,7/29,8/5 Behrouz Minaei
#
###
-package Apache::lonproblemstatistics;
+package Apache::lonproblemstatistics;
use strict;
use Apache::lonnet();
use Apache::lonhtmlcommon;
use Apache::loncoursedata;
-use GDBM_File;
+use Apache::lonstatistics;
+use Spreadsheet::WriteExcel;
-my $jr;
+#######################################################
+#######################################################
-sub BuildProblemStatisticsPage {
- my ($cacheDB, $students, $courseID, $c, $r)=@_;
- my %cache;
+sub CreateInterface {
+ my $Str = '';
+ $Str .= '
'."\n";
+ $Str .= '';
+ $Str .= 'Sections ';
+ $Str .= 'Sequences and Folders ';
+ $Str .= 'Output ';
+ $Str .= ' '."\n";
+ #
+ $Str .= ''."\n";
+ $Str .= &Apache::lonstatistics::SectionSelect('Section','multiple',5);
+ $Str .= ' ';
+ #
+ my $only_seq_with_assessments = sub {
+ my $s=shift;
+ if ($s->{'num_assess'} < 1) {
+ return 0;
+ } else {
+ return 1;
+ }
+ };
+ $Str .= &Apache::lonstatistics::MapSelect('Maps','multiple,all',5,
+ $only_seq_with_assessments);
+ $Str .= ' '."\n";
+ $Str .= &CreateAndParseOutputSelector();
+ $Str .= ' '."\n";
+ $Str .= '
'."\n";
+ return $Str;
+}
- $jr = $r;
+#######################################################
+#######################################################
- unless(tie(%cache,'GDBM_File',$cacheDB,&GDBM_READER(),0640)) {
- $r->print('Unable to tie database.');
- return;
+=pod
+
+=item &CreateAndParseOutputSelector()
+
+=cut
+
+#######################################################
+#######################################################
+my $output_mode;
+my $show;
+
+my @OutputOptions =
+ (
+ { name => 'problem statistics grouped by sequence',
+ value => 'HTML problem statistics grouped',
+ description => 'Output statistics for the problem parts.',
+ mode => 'html',
+ show => 'grouped',
+ },
+ { name => 'problem statistics ungrouped',
+ value => 'HTML problem statistics ungrouped',
+ description => 'Output statistics for the problem parts.',
+ mode => 'html',
+ show => 'ungrouped',
+ },
+ { name => 'problem statistics, Excel',
+ value => 'Excel problem statistics',
+ description => 'Output statistics for the problem parts '.
+ 'in an Excel workbook',
+ mode => 'excel',
+ show => 'all',
+ },
+ { name => 'Degree of Difficulty Plot',
+ value => 'plot deg diff',
+ description => 'Generate a plot of the degree of difficulty of each '.
+ 'problem part.',
+ mode => 'plot',
+ show => 'deg of diff',
+ },
+ { name => 'Percent Wrong Plot',
+ value => 'plot per wrong',
+ description => 'Generate a plot showing the percent of students who '.
+ 'were unable to complete each problem part',
+ mode => 'plot',
+ show => 'per wrong',
+ },
+ );
+
+sub OutputDescriptions {
+ my $Str = '';
+ $Str .= "Output Modes \n";
+ $Str .= "\n";
+ foreach my $outputmode (@OutputOptions) {
+ $Str .=" ".$outputmode->{'name'}." \n";
+ $Str .=" ".$outputmode->{'description'}." \n";
}
+ $Str .= " \n";
+ return $Str;
+}
- # Remove students who don't have the proper section.
- my @sectionsSelected = split(':',$cache{'sectionsSelected'});
- for(my $studentIndex=((scalar @$students)-1); $studentIndex>=0;
- $studentIndex--) {
- my $value = $cache{$students->[$studentIndex].':section'};
- my $found = 0;
- foreach (@sectionsSelected) {
- if($_ eq 'none') {
- if($value eq '' || !defined($value) || $value eq ' ') {
- $found = 1;
- last;
- }
- } else {
- if($value eq $_) {
- $found = 1;
- last;
- }
- }
- }
- if($found == 0) {
- splice(@$students, $studentIndex, 1);
+sub CreateAndParseOutputSelector {
+ my $Str = '';
+ my $elementname = 'outputmode';
+ #
+ # Format for output options is 'mode, restrictions';
+ my $selected = 'html, with links';
+ if (exists($ENV{'form.'.$elementname})) {
+ if (ref($ENV{'form.'.$elementname} eq 'ARRAY')) {
+ $selected = $ENV{'form.'.$elementname}->[0];
+ } else {
+ $selected = $ENV{'form.'.$elementname};
}
}
+ #
+ # Set package variables describing output mode
+ $output_mode = 'html';
+ $show = 'all';
+ foreach my $option (@OutputOptions) {
+ next if ($option->{'value'} ne $selected);
+ $output_mode = $option->{'mode'};
+ $show = $option->{'show'};
+ }
+ #
+ # Build the form element
+ $Str = qq//;
+ foreach my $option (@OutputOptions) {
+ $Str .= "\n".' {'value'} eq $selected);
+ $Str .= ">".$option->{'name'}."<\/option>";
+ }
+ $Str .= "\n ";
+ return $Str;
+}
- my $Ptr = '';
- $Ptr .= '';
- $Ptr .= 'Select Map '."\n";
- $Ptr .= '';
- $Ptr .= &Apache::lonhtmlcommon::MapOptions(\%cache, 'ProblemStatistics',
- 'Statistics');
- $Ptr .= ' '."\n";
- $Ptr .= 'Sorting Type: '."\n";
- $Ptr .= ''."\n";
- $Ptr .= &Apache::lonhtmlcommon::AscendOrderOptions(
- $cache{'ProblemStatisticsAscend'},
- 'ProblemStatistics',
- 'Statistics');
- $Ptr .= ' '."\n";
- $Ptr .= 'Select Sections ';
- $Ptr .= ' '."\n";
- $Ptr .= ''."\n";
- my @sections = split(':',$cache{'sectionList'});
- $Ptr .= &Apache::lonhtmlcommon::MultipleSectionSelect(\@sections,
- \@sectionsSelected,
- 'Statistics');
- $Ptr .= ' '."\n";
- $Ptr .= &ProblemStatisticsButtons($cache{'DisplayFormat'},
- $cache{'DisplayLegend'});
- $Ptr .= '
';
- if($cache{'DisplayLegend'} eq 'Show Legend') {
- $Ptr .= &ProblemStatisticsLegend();
+###############################################
+###############################################
+
+###############################################
+###############################################
+sub Gather_Student_Data {
+ my ($r) = @_;
+ my $c = $r->connection();
+ #
+ my @Sequences = &Apache::lonstatistics::Sequences_with_Assess();
+ #
+ my @Students = @Apache::lonstatistics::Students;
+ #
+ # Open the progress window
+ my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin
+ ($r,'Statistics Compilation Status',
+ 'Statistics Compilation Progress', scalar(@Students));
+ #
+ while (my $student = shift @Students) {
+ return if ($c->aborted());
+ my ($status,undef) = &Apache::loncoursedata::ensure_current_data
+ ($student->{'username'},$student->{'domain'},
+ $ENV{'request.course.id'});
+ &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
+ 'last student');
}
- $r->print($Ptr);
+ &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
$r->rflush();
+}
- my @Header = ("Homework Sets Order","#Stdnts","Tries","Mod",
- "Mean","#YES","#yes","%Wrng","DoDiff",
- "S.D.","Skew.","D.F.1st","D.F.2nd","Disc.");
- my $color=&setbgcolor(0);
+###############################################
+###############################################
-# my %Discuss=&Apache::loncoursedata::LoadDiscussion($courseID);
- my $lastStatus = (defined($cache{'StatisticsLastStatus'})) ?
- $cache{'StatisticsLastStatus'} : 'Nothing';
- my $whichStudents = join(':::',sort(@$students));
- if(!defined($cache{'StatisticsCached'}) ||
- $lastStatus ne $cache{'Status'} ||
- $whichStudents ne $cache{'StatisticsWhichStudents'}) {
- if(defined($cache{'StatisticsCached'})) {
- untie(%cache);
- unless(tie(%cache,'GDBM_File',$cacheDB,&GDBM_WRCREAT(),0640)) {
- $r->print('Unable to tie database.');
- return;
- }
- my @statkeys = split(':::', $cache{'StatisticsKeys'});
- delete $cache{'StatisticsKeys'};
- delete $cache{'StatisticsCached'};
- foreach(@statkeys) {
- delete $cache{$_};
- }
- }
- untie(%cache);
- &Apache::loncoursedata::DownloadStudentCourseDataSeparate($students,
- 'true',
- $cacheDB,
- 'true',
- 'true',
- $courseID,
- $r, $c);
- if($c->aborted()) { return; }
-
- unless(tie(%cache,'GDBM_File',$cacheDB,&GDBM_READER(),0640)) {
- $r->print('Unable to tie database.');
- return;
- }
- my ($problemData) = &ExtractStudentData(\%cache, $students);
- &CalculateStatistics($problemData, \%cache);
- untie(%cache);
-
- unless(tie(%cache,'GDBM_File',$cacheDB,&GDBM_WRCREAT(),0640)) {
- $r->print('Unable to tie database.');
- return;
- }
- foreach(keys(%$problemData)) {
- $cache{$_} = $problemData->{$_};
- }
- $cache{'StatisticsKeys'} = join(':::', keys(%$problemData));
- $cache{'StatisticsCached'} = 'true';
- $cache{'StatisticsLastStatus'} = $cache{'Status'};
- $cache{'StatisticsWhichStudents'} = $whichStudents;
- untie(%cache);
-
- unless(tie(%cache,'GDBM_File',$cacheDB,&GDBM_READER(),0640)) {
- $r->print('Unable to tie database.');
- return;
+###############################################
+###############################################
+sub BuildProblemStatisticsPage {
+ my ($r,$c)=@_;
+ #
+ $output_mode = 'html';
+ $show = 'grouped';
+ #
+ $r->print(&CreateInterface());
+ $r->print(' ');
+ $r->print(' ');
+ if (! exists($ENV{'form.statsfirstcall'})) {
+ return;
+ }
+ #
+ &Gather_Student_Data($r);
+ #
+ #
+ if ($output_mode eq 'html') {
+ $r->print("".
+ $ENV{'course.'.$ENV{'request.course.id'}.'.description'}.
+ " \n");
+ $r->print("".localtime(time)." ");
+ $r->rflush();
+ if ($show eq 'grouped') {
+ &output_html_grouped_by_sequence($r);
+ } elsif ($show eq 'ungrouped') {
+ &output_html_ungrouped($r);
+ }
+ } elsif ($output_mode eq 'excel') {
+ $r->print("Preparing Excel Spreadsheet ");
+ &output_excel($r);
+ } elsif ($output_mode eq 'plot') {
+ if ($show eq 'deg of diff') {
+ &plot_statistics($r,'DoDiff');
+ } elsif ($show eq 'per wrong') {
+ &plot_statistics($r,'%Wrng');
}
+ } else {
+ $r->print("Not implemented ");
}
+ return;
+}
- my $orderedProblems = &SortProblems(\%cache,
- $cache{'ProblemStatisticsSort'},
- $cache{'ProblemStatisticsAscend'});
- &BuildStatisticsTable(\%cache, $cache{'DisplayFormat'}, $orderedProblems,
- \@Header, $r, $color);
- untie(%cache);
+###############################################
+###############################################
+###############################################
+###############################################
+sub output_html_grouped_by_sequence {
+ my ($r) = @_;
+ my $problem_num = 0;
+ #$r->print(&ProblemStatisticsLegend());
+ my @Header = ("Title","Part","#Stdnts","Tries","Mod",
+ "Mean","#YES","#yes","%Wrng","DoDiff",
+ "S.D.","Skew.");#,"D.F.1st","D.F.2nd");
+ # #FFFFE6 #EEFFCC #DDFFFF FFDDDD #DDFFDD #FFDDFF
+ foreach my $sequence (&Apache::lonstatistics::Sequences_with_Assess()) {
+ my $show_part = 0;
+ next if ($sequence->{'num_assess'}<1);
+ $r->print("".$sequence->{'title'}." ");
+ $r->print(''."\n");
+ $r->print(''."\n");
+ $r->print(''.
+ join(" ",@Header)." \n");
+ foreach my $resource (@{$sequence->{'contents'}}) {
+ next if ($resource->{'type'} ne 'assessment');
+ foreach my $part (@{$resource->{'parts'}}) {
+ $problem_num++;
+ my ($num,$tries,$mod,$mean,$Solved,$solved,$DegOfDiff,$STD,
+ $SKEW) = &Apache::loncoursedata::get_problem_statistics
+ (undef,$resource->{'symb'},$part,
+ $ENV{'request.course.id'});
+ #
+ $show_part = 1 if ($part ne '0');
+ $part = ' ' if ($part == 0);
+ #
+ my $wrongpercent = 0;
+ if (defined($num) && $num > 0) {
+ $wrongpercent=int(10*100*($num-$Solved+$solved)/$num)/10;
+ }
+ my $option = '';
+ $option .= 'no part' if (! $show_part);
+ $r->print(''.&statistics_html_table_data
+ ($resource,$part,$num,$tries,$mod,$mean,$Solved,
+ $solved,$wrongpercent,$DegOfDiff,$STD,$SKEW,
+ $option).
+ " \n");
+ }
+ }
+ $r->print("
\n");
+ $r->print("
\n");
+ $r->rflush();
+ }
+ #
return;
}
-sub BuildGraphicChart {
- my ($graph,$cacheDB,$courseDescription,$r)=@_;
- my %cache;
- my $max = 0;
-
- unless(tie(%cache,'GDBM_File',$cacheDB,&GDBM_READER(),0640)) {
- return 'Unable to tie database.';
- }
-
- my @problems = split(':::', $cache{'problemList'});
- my @values = ();
- foreach (@problems) {
- my $data = 0;
- if($graph eq 'DoDiffGraph') {
- $data = sprintf("%.2f", $cache{$_.':degreeOfDifficulty'}),
- } else {
- $data = sprintf("%.1f", $cache{$_.':percentWrong'}),
+###############################################
+###############################################
+
+###############################################
+###############################################
+sub output_html_ungrouped {
+ my ($r,$option) = @_;
+ #
+ my $problem_num = 0;
+ my $show_container = 0;
+ my $show_part = 0;
+ #$r->print(&ProblemStatisticsLegend());
+ my @Header = ("Title","Part","#Stdnts","Tries","Mod",
+ "Mean","#YES","#yes","%Wrng","DoDiff",
+ "S.D.","Skew");#,"D.F.1st","D.F.2nd");
+ #
+ my $sortby = undef;
+ foreach (@Header) {
+ if ($ENV{'form.sortby'} eq $_) {
+ $sortby = $_;
+ }
+ }
+ if (! defined($sortby) || $sortby eq '') {
+ $sortby = 'Container';
+ }
+ # If there is more than one sequence, list their titles
+ my @Sequences = &Apache::lonstatistics::Sequences_with_Assess();
+ if (@Sequences > 1) {
+ unshift(@Header,"Container");
+ $show_container = 1;
+ }
+ #
+ # If the option for showing the problem number is needed, push that
+ # on the list too
+ if (defined($option) && $option =~ /show probnum/) {
+ unshift(@Header,"P#");
+ }
+ #
+ $r->print(''."\n");
+ $r->rflush();
+ #
+ # Compile the data
+ my @Statsarray;
+ foreach my $sequence (@Sequences) {
+ next if ($sequence->{'num_assess'}<1);
+ foreach my $resource (@{$sequence->{'contents'}}) {
+ next if ($resource->{'type'} ne 'assessment');
+ foreach my $part (@{$resource->{'parts'}}) {
+ $problem_num++;
+ my ($num,$tries,$mod,$mean,$Solved,$solved,$DegOfDiff,$STD,
+ $SKEW) = &Apache::loncoursedata::get_problem_statistics
+ (undef,$resource->{'symb'},$part,
+ $ENV{'request.course.id'});
+ #
+ $show_part = 1 if ($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,
+ 'problem_num' => $problem_num,
+ });
+ }
}
- if($max < $data) {
- $max = $data;
+ }
+ #
+ # Table Headers
+ $r->print(''."\n");
+ my $Str = '';
+ foreach (@Header) {
+ next if ($_ eq 'Part' && !$show_part);
+ # Do not allow sorting on some fields
+ if ($_ eq $sortby || /^(Part|P\#)$/) {
+ $Str .= ''.$_.' ';
+ } else {
+ $Str .= ''.
+ ''.
+ $_.' ';
}
- push(@values, $data);
}
- untie(%cache);
-
- my $sendValues = join(',', @values);
- my $sendCount = scalar(@values);
-
- my $title = '';
- if($graph eq 'DoDiffGraph') {
- $title = 'Degree-of-Difficulty';
+ $r->print(''.$Str." \n");
+ #
+ # Sort the data
+ my @OutputOrder;
+ if ($sortby eq 'Container') {
+ @OutputOrder = @Statsarray;
} else {
- $title = 'Wrong-Percentage';
+ # $sortby is already defined, so we can charge ahead
+ if ($sortby =~ /^(title|part)$/i) {
+ # Alpha comparison
+ @OutputOrder = sort {
+ lc($a->{$sortby}) cmp lc($b->{$sortby}) ||
+ lc($a->{'Title'}) cmp lc($b->{'Title'}) ||
+ lc($a->{'Part'}) cmp lc($b->{'Part'});
+ } @Statsarray;
+ } else {
+ # Numerical comparison
+ @OutputOrder = sort {
+ my $retvalue = 0;
+ if ($b->{$sortby} eq 'nan') {
+ if ($a->{$sortby} ne 'nan') {
+ $retvalue = -1;
+ } else {
+ $retvalue = 0;
+ }
+ }
+ if ($a->{$sortby} eq 'nan') {
+ if ($b->{$sortby} ne 'nan') {
+ $retvalue = 1;
+ }
+ }
+ if ($retvalue eq '0') {
+ $retvalue = $b->{$sortby} <=> $a->{$sortby} ||
+ lc($a->{'Title'}) <=> lc($b->{'Title'}) ||
+ lc($a->{'Part'}) <=> lc($b->{'Part'});
+ }
+ $retvalue;
+ } @Statsarray;
+ }
}
- my @GData = ($courseDescription, 'Problems', $title, $max, $sendCount,
- $sendValues);
-
- $r->print(''."\n");
- $r->print(' ');
- $r->print('
\n");
+ $r->print("
\n");
+ $r->rflush();
+ #
+ return;
}
-sub BuildStatisticsTable {
- my ($cache,$displayFormat,$orderedProblems,$headings,$r,$color)=@_;
-#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, $students);
-
- if($displayFormat ne 'Display CSV Format') {
- $r->print(''."\n");
- $r->print(''."\n");
- $r->print(&CreateProblemStatisticsTableHeading($headings, $r));
+###############################################
+###############################################
+sub output_excel {
+ my ($r) = @_;
+ my $filename = '/prtspool/'.
+ $ENV{'user.name'}.'_'.$ENV{'user.domain'}.'_'.
+ time.'_'.rand(1000000000).'.xls';
+ #
+ 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("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 = $excel_workbook->addworksheet($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 {
- $r->print(' ');
+ if ($Sections[0] eq 'all') {
+ $sectionstring = "All sections";
+ } else {
+ $sectionstring = "Section ".$Sections[0];
+ }
}
-
- my $count = 1;
- foreach(@$orderedProblems) {
- my ($sequence,$problem,$part)=split(':', $_);
- if($cache->{'StatisticsMaps'} ne 'All Maps' &&
- $cache->{'StatisticsMaps'} ne $cache->{$sequence.':title'}) {
- next;
- }
-
- my $ref = ''.$cache->{$problem.':title'}.' ';
-# my $ref = $cache->{$problem.':title'};
- my $title = $cache->{$problem.':title'};
- my $source = 'source';
- my $tableData = join('&', $ref, $title, $source,
- $cache->{$_.':studentCount'},
- $cache->{$_.':totalTries'},
- $cache->{$_.':maxTries'},
- sprintf("%.2f", $cache->{$_.':mean'}),
- $cache->{$_.':correct'},
- $cache->{$_.':correctByOverride'},
- sprintf("%.1f", $cache->{$_.':percentWrong'}),
- sprintf("%.2f", $cache->{$_.':degreeOfDifficulty'}),
- sprintf("%.1f", $cache->{$_.':standardDeviation'}),
- sprintf("%.1f", $cache->{$_.':skewness'}),
- sprintf("%.2f", $cache->{$_.':discriminationFactor1'}),
- sprintf("%.2f", $cache->{$_.':discriminationFactor2'}),
- 0); # 0 is for discussion, need to figure out
-
- &TableRow($displayFormat,$tableData,$count,$r,$color);
- $count++;
- }
- if($cache->{'DisplayFormat'} ne 'Display CSV Format') {
- $r->print('
'."\n");
- }
- $r->print('
');
-#6666666
-# $r->print(' '.$out.'&'.$DoD);
-# print (OUT $out.'@'.$DoD.'&');
-#6666666
-
-#6666666
-# close( OUT );
-#666666
+ $excel_sheet->write($rows_output,$cols_output++,$sectionstring);
+ $cols_output += scalar(@Sections);
+ #
+ # Put the date in there too
+ $excel_sheet->write($rows_output,$cols_output++,
+ 'Compiled on '.localtime(time));
+ #
+ $rows_output++;
+ $cols_output=0;
+ #
+ # Add the headers
+ my @Header = ("Container","Title","Part","#Stdnts","Tries","Mod",
+ "Mean","#YES","#yes","%Wrng","DoDiff",
+ "S.D.","Skew.");#,"D.F.1st","D.F.2nd");
+ foreach (@Header) {
+ $excel_sheet->write($rows_output,$cols_output++,$_);
+ }
+ $rows_output++;
+ #
+ # Write the data
+ 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'}}) {
+ $cols_output=0;
+ my ($num,$tries,$mod,$mean,$Solved,$solved,$DegOfDiff,$STD,
+ $SKEW) = &Apache::loncoursedata::get_problem_statistics
+ (undef,$resource->{'symb'},$part,
+ $ENV{'request.course.id'});
+ #
+ if (!defined($part) || $part eq '') {
+ $part = ' ';
+ }
+ my $wrongpercent = 0;
+ if (defined($num) && $num > 0) {
+ $wrongpercent=int(10*100*($num-$Solved+$solved)/$num)/10;
+ }
+ foreach ($sequence->{'title'},$resource->{'title'},$part,
+ $num,$tries,$mod,$mean,$Solved,$solved,$wrongpercent,
+ $DegOfDiff,$STD,$SKEW) {
+ $excel_sheet->write($rows_output,$cols_output++,$_);
+ }
+ $rows_output++;
+ }
+ }
+ }
+ #
+ # Write the excel file
+ $excel_workbook->close();
+ # Tell the user where to get their excel file
+ $r->print(' '.
+ '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,$DiscNo,$Prob)=split(/\&/,$Str);
- my $Ptr;
- if($displayFormat eq 'Display CSV Format') {
- $Ptr="\n".' '.
- "\n".'"'.$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".'"'.$DiscNo.'"';
+###############################################
+###############################################
- $r->print("\n".$Ptr);
- } else {
- $Ptr="\n".''.
- "\n".''.$RealIdx.' '.
- "\n".''.$ref.' '.
- "\n".' '.$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.' ';
- $r->print("\n".$Ptr.' ' );
+###############################################
+###############################################
+sub statistics_html_table_data {
+ my ($resource,$part,$num,$tries,$mod,$mean,$Solved,$solved,$wrongpercent,
+ $DegOfDiff,$STD,$SKEW,$options) = @_;
+ my $row = '';
+ $row .= ''.
+ ''.
+ $resource->{'title'}.' '.
+ ' ';
+ $row .= ''.$part.' ' if ($options !~ /no part/);
+ foreach ($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 $row;
+}
+
+###############################################
+###############################################
+sub plot_statistics {
+ my ($r,$datafield) = @_;
+ my @Data;
+ #
+ my %Fields = ('#Stdnts'=> 0,
+ 'Tries' => 1,
+ 'Mod' => 2,
+ 'Mean' => 3,
+ '#YES' => 4,
+ '#yes' => 5,
+ '%Wrng' => 9,
+ 'DoDiff' => 6,
+ 'S.D.' => 7,
+ 'Skew' => 8,);
+ #
+ my $field = '%Wrng';
+ foreach (keys(%Fields)) {
+ $field = $_ if ($datafield eq $_);
+ }
+ my $fieldindex = $Fields{$field};
+ #
+ my $Max = 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'}}) {
+ my @Results = &Apache::loncoursedata::get_problem_statistics
+ (undef,$resource->{'symb'},$part,
+ $ENV{'request.course.id'});
+ my ($num,$Solved,$solved) = @Results[0,4,5];
+ my $wrongpercent = 0;
+ if (defined($num) && $num > 0) {
+ $wrongpercent=int(10*100*($num-$Solved+$solved)/$num)/10;
+ }
+ push (@Results,$wrongpercent);
+ my $data = $Results[$fieldindex];
+ $data = 0 if ($data eq 'nan');
+ $Max = $data if ($Max<$data);
+ push (@Data,$data);
+ }
+ }
}
-
+ #
+ # Print out plot request
+ my $title = 'Percent Wrong';
+ if ($field eq 'DoDiff') {
+ $title = 'Degree of Difficulty';
+ }
+ my $yaxis = 'Percent';
+ if ($field eq 'DoDiff') {
+ $yaxis = '';
+ } elsif ($field ne '%Wrng') {
+ $yaxis = '';
+ }
+ #
+ # Determine appropriate value for $Max
+ if ($field eq 'DoDiff') {
+ if ($Max > 0.5) {
+ $Max = 1;
+ } elsif ($Max > 0.2) {
+ $Max = 0.5;
+ } elsif ($Max > 0.1) {
+ $Max = 0.2;
+ }
+ } elsif ($field eq '%Wrng') {
+ if ($Max > 50) {
+ $Max = 100;
+ } elsif ($Max > 25) {
+ $Max = 50;
+ } elsif ($Max > 20) {
+ $Max = 25;
+ } elsif ($Max > 10) {
+ $Max = 20;
+ } elsif ($Max > 5) {
+ $Max = 10;
+ } else {
+ $Max = 5;
+ }
+ }
+
+ $r->print("".&DrawGraph(\@Data,$title,'Problem Number',$yaxis,
+ $Max)."
\n");
+ #
+ # Print out the data
+ $ENV{'form.sortby'} = 'Contents';
+ &output_html_ungrouped($r,'show probnum');
return;
}
-# For loading the colored table for display or un-colored for print
-sub setbgcolor {
- my $PrintTable=shift;
- my %color;
- if ($PrintTable){
- $color{"gb"}="#FFFFFF";
- $color{"red"}="#FFFFFF";
- $color{"yellow"}="#FFFFFF";
- $color{"green"}="#FFFFFF";
- $color{"purple"}="#FFFFFF";
- } else {
- $color{"gb"}="#DDFFFF";
- $color{"red"}="#FFDDDD";
- $color{"yellow"}="#EEFFCC";
- $color{"green"}="#DDFFDD";
- $color{"purple"}="#FFDDFF";
- }
-
- return \%color;
-}
-
-sub ProblemStatisticsButtons {
- my ($displayFormat, $displayLegend)=@_;
-
- my $Ptr = '';
- $Ptr .= ' 1 ) {
+ if ($Max % 10) {
+ if ( int($Max) < $Max ) {
+ $Max++;
+ $Max = int($Max);
+ }
+ }
+ } else {
+ $Max = 1;
+ }
+ my @GData = ($title,$xaxis,$yaxis,$Max,$sendCount,$sendValues);
+ return ' ';
}
+###############################################
+###############################################
+
+###############################################
+###############################################
sub ProblemStatisticsLegend {
my $Ptr = '';
$Ptr = '';
@@ -456,8 +786,8 @@ sub ProblemStatisticsLegend {
$Ptr .= 'Dis.F. ';
$Ptr .= 'Discrimination Factor: A Standard for evaluating the ';
$Ptr .= 'problem according to a Criterion ';
- $Ptr .= '[Applied Criterion in %27 Upper Students - ';
- $Ptr .= 'Applied the same Criterion in %27 Lower Students] ';
+ $Ptr .= '[Criterion to group students into %27 Upper Students - ';
+ $Ptr .= 'and %27 Lower Students] ';
$Ptr .= '1st Criterion for Sorting the Students: ';
$Ptr .= 'Sum of Partial Credit Awarded / Total Number of Tries ';
$Ptr .= '2nd Criterion for Sorting the Students: ';
@@ -466,250 +796,9 @@ sub ProblemStatisticsLegend {
$Ptr .= ' Disc. ';
$Ptr .= 'Number of Students had at least one discussion.';
$Ptr .= '
';
-
return $Ptr;
}
-#------- Processing upperlist and lowerlist according to each problem
-
-sub ExtractStudentData {
- my ($cache, $students)=@_;
-
-#$Apache::lonxml::debug=1;
-#&Apache::lonhomework::showhash(%$cache);
-#$Apache::lonxml::debug=0;
-
- my @problemList=();
- my %problemData;
- foreach my $sequence (split(':', $cache->{'orderedSequences'})) {
- foreach my $problemID (split(':', $cache->{$sequence.':problems'})) {
- foreach my $part (split(/\:/,$cache->{$sequence.':'.
- $problemID.
- ':parts'})) {
- my $id = $sequence.':'.$problemID.':'.$part;
- push(@problemList, $id);
- my $totalTries = 0;
- my $totalAwarded = 0;
- my $correct = 0;
- my $correctByOverride = 0;
- my $studentCount = 0;
- my $maxTries = 0;
- my $totalFirst = 0;
- my @studentTries=();
- foreach(@$students) {
- my $code = $cache->{"$_:$problemID:$part:code"};
-
- if(defined($cache->{$_.':error'}) || $code eq ' ' ||
- $cache->{"$_:$problemID:NoVersion"} eq 'true') {
- next;
- }
-
- $studentCount++;
- my $tries = $cache->{"$_:$problemID:$part:tries"};
- if($maxTries < $tries) {
- $maxTries = $tries;
- }
- $totalTries += $tries;
- push(@studentTries, $tries);
-
- my $awarded = $cache->{"$_:$problemID:$part:awarded"};
- $totalAwarded += $awarded;
-
- if($code eq '*') {
- $correct++;
- if($tries == 1) {
- $totalFirst++;
- }
- } elsif($code eq '+') {
- $correctByOverride++;
- }
- }
-
- $problemData{$id.':sequenceTitle'} =
- $cache->{$sequence.':title'};
- $problemData{$id.':studentCount'} = $studentCount;
- $problemData{$id.':totalTries'} = $totalTries;
- $problemData{$id.':studentTries'} = \@studentTries;
- $problemData{$id.':totalAwarded'} = $totalAwarded;
- $problemData{$id.':correct'} = $correct;
- $problemData{$id.':correctByOverride'} = $correctByOverride;
- $problemData{$id.':wrong'} = $studentCount -
- ($correct + $correctByOverride);
- $problemData{$id.':maxTries'} = $maxTries;
- $problemData{$id.':totalFirst'} = $totalFirst;
- }
- }
- }
-
- my @upperStudents1=();
- my @lowerStudents1=();
- my @upperStudents2=();
- my @lowerStudents2=();
- my $upperCount = int(0.27*scalar(@$students));
- # Discriminant Factor criterion 1
- my $sortedStudents = &SortDivideByTries($students,$cache,':totalAwarded');
-
- for(my $i=0; $i<$upperCount; $i++) {
- push(@lowerStudents1, $sortedStudents->[$i]);
- push(@upperStudents1, $sortedStudents->[(scalar(@$students)-$i-1)]);
- }
-
- $problemData{'studentsUpperListCriterion1'}=join(':::', @upperStudents1);
- $problemData{'studentsLowerListCriterion1'}=join(':::', @lowerStudents1);
-
- # Discriminant Factor criterion 2
- $sortedStudents = &SortDivideByTries($students, $cache, ':totalSolved');
-
- for(my $i=0; $i<$upperCount; $i++) {
- push(@lowerStudents2, $sortedStudents->[$i]);
- push(@upperStudents2, $sortedStudents->[(scalar(@$students)-$i-1)]);
- }
- $problemData{'studentsUpperListCriterion2'}=join(':::', @upperStudents2);
- $problemData{'studentsLowerListCriterion2'}=join(':::', @lowerStudents2);
-
- $problemData{'problemList'} = join(':::', @problemList);
-# $Discussed=0;
-# if($Discuss->{"$name:$problem"}) {
-# $TotDiscuss++;
-# $Discussed=1;
-# }
-
- return \%problemData;
-}
-
-sub SortDivideByTries {
- my ($toSort, $data, $sortOn)=@_;
- my @orderedData = sort { ($data->{$a.':totalTries'}) ?
- ($data->{$a.$sortOn}/$data->{$a.':totalTries'}):0
- <=>
- ($data->{$b.':totalTries'}) ?
- ($data->{$b.$sortOn}/$data->{$b.':totalTries'}):0
- } @$toSort;
-
- return \@orderedData;
-}
-
-sub SortProblems {
- my ($problemData,$sortBy,$ascend)=@_;
-
- my @problems = split(':::', $problemData->{'problemList'});
- if($sortBy eq "Homework Sets Order") {
- return \@problems;
- }
-
- my $data;
-
- if ($sortBy eq "#Stdnts") { $data = ':studentCount'; }
- elsif($sortBy eq "Tries") { $data = ':totalTries'; }
- elsif($sortBy eq "Mod") { $data = ':maxTries'; }
- elsif($sortBy eq "Mean") { $data = ':mean'; }
- elsif($sortBy eq "#YES") { $data = ':correct'; }
- elsif($sortBy eq "#yes") { $data = ':correctByOverride'; }
- elsif($sortBy eq "%Wrng") { $data = ':percentWrong'; }
- elsif($sortBy eq "DoDiff") { $data = ':degreeOfDifficulty'; }
- elsif($sortBy eq "S.D.") { $data = ':standardDeviation'; }
- elsif($sortBy eq "Skew.") { $data = ':skewness'; }
- elsif($sortBy eq "D.F.1st") { $data = ':discriminantFactor1'; }
- elsif($sortBy eq "D.F.2nd") { $data = ':discriminantFactor2'; }
- elsif($sortBy eq "Disc.") { $data = ''; }
- else { return \@problems; }
-
- my @orderedProblems =
- sort { $problemData->{$a.$data} <=> $problemData->{$b.$data} }
- @problems;
- if($ascend eq 'Descending') {
- @orderedProblems = reverse(@orderedProblems);
- }
-
- return \@orderedProblems;
-}
-
-sub CalculateStatistics {
- my ($data, $cache)=@_;
-
- my @problems = split(':::', $data->{'problemList'});
- foreach(@problems) {
- # Mean
- $data->{$_.':mean'} = ($data->{$_.':studentCount'}) ?
- ($data->{$_.':totalTries'} / $data->{$_.':studentCount'}) : 0;
-
- # %Wrong
- $data->{$_.':percentWrong'} = ($data->{$_.':studentCount'}) ?
- (($data->{$_.':wrong'} / $data->{$_.':studentCount'}) * 100.0) :
- 100.0;
-
- # Degree of Difficulty
- $data->{$_.':degreeOfDifficulty'} = ($data->{$_.':totalTries'}) ?
- (1 - (($data->{$_.':correct'} + $data->{$_.':correctByOverride'}) /
- $data->{$_.':totalTries'})) : 0;
-
- # Factor in mean
- my $studentTries = $data->{$_.':studentTries'};
- foreach(my $index=0; $index < scalar(@$studentTries); $index++) {
- $studentTries->[$index] -= $data->{$_.':mean'};
- }
- my $sumSquared = 0;
- my $sumCubed = 0;
- foreach(@$studentTries) {
- my $squared = ($_ * $_);
- my $cubed = ($squared * $_);
- $sumSquared += $squared;
- $sumCubed += $cubed;
- }
-
- # Standard deviation
- $data->{$_.':standardDeviation'} = ($data->{$_.':studentCount'} - 1) ?
- ((sqrt($sumSquared)) / ($data->{$_.':studentCount'} - 1)) : 0;
-
- # Skewness
- my $standardDeviation = $data->{$_.':standardDeviation'};
- $data->{$_.':skewness'} = ($data->{$_.':standardDeviation'}) ?
- (((sqrt($sumSquared)) / $data->{$_.':studentCount'}) /
- ($standardDeviation * $standardDeviation * $standardDeviation)) :
- 0;
-
- # Discrimination Factor 1
- my ($sequence, $problem, $part) = split(':', $_);
-
- my @upper1 = split(':::', $data->{'studentsUpperListCriterion1'});
- my @lower1 = split(':::', $data->{'studentsLowerListCriterion1'});
-
- my $upper1Sum=0;
- foreach my $name (@upper1) {
- $upper1Sum += $cache->{"$name:$problem:$part:awarded"};
- }
- $upper1Sum = (scalar(@upper1)) ? ($upper1Sum/(scalar(@upper1))) : 0;
-
- my $lower1Sum=0;
- foreach my $name (@lower1) {
- $lower1Sum += $cache->{"$name:$problem:$part:awarded"};
- }
- $lower1Sum = (scalar(@lower1)) ? ($lower1Sum/(scalar(@lower1))) : 0;
-
- $data->{$_.':discriminationFactor1'} = $upper1Sum - $lower1Sum;
-
- # Discrimination Factor 2
- my @upper2 = split(':::', $data->{'studentsUpperListCriterion2'});
- my @lower2 = split(':::', $data->{'studentsLowerListCriterion2'});
-
- my $upper2Sum=0;
- foreach my $name (@upper2) {
- $upper2Sum += $cache->{"$name:$problem:$part:awarded"};
- }
- $upper2Sum = (scalar(@upper2)) ? ($upper2Sum/(scalar(@upper2))) : 0;
-
- my $lower2Sum=0;
- foreach my $name (@lower2) {
- $lower2Sum += $cache->{"$name:$problem:$part:awarded"};
- }
- $lower2Sum = (scalar(@lower2)) ? ($lower2Sum/(scalar(@lower2))) : 0;
-
- $data->{$_.':discriminationFactor2'} = $upper2Sum - $lower2Sum;
- }
-
- return;
-}
-
#---- END Problem Statistics Web Page ----------------------------------------
1;