--- loncom/interface/statistics/lonproblemanalysis.pm 2003/10/14 20:20:40 1.36 +++ loncom/interface/statistics/lonproblemanalysis.pm 2003/10/21 16:00:30 1.44 @@ -1,7 +1,6 @@ # The LearningOnline Network with CAPA # - -# $Id: lonproblemanalysis.pm,v 1.36 2003/10/14 20:20:40 matthew Exp $ +# $Id: lonproblemanalysis.pm,v 1.44 2003/10/21 16:00:30 matthew Exp $ # # Copyright Michigan State University Board of Trustees # @@ -35,6 +34,14 @@ use Apache::lonhtmlcommon(); use Apache::loncoursedata(); use Apache::lonstatistics; use Apache::lonlocal; +use HTML::Entities(); +use Time::Local(); +use Spreadsheet::WriteExcel(); + +my $plotcolors = ['#33ff00', + '#0033cc', '#990000', '#aaaa66', '#663399', '#ff9933', + '#66ccff', '#ff9999', '#cccc33', '#660000', '#33cc66', + ]; sub BuildProblemAnalysisPage { my ($r,$c)=@_; @@ -43,7 +50,8 @@ sub BuildProblemAnalysisPage { # my @Students = @Apache::lonstatistics::Students; # - if (exists($ENV{'form.updatecaches'}) || + if (exists($ENV{'form.ClearCache'}) || + exists($ENV{'form.updatecaches'}) || (exists($ENV{'form.firstanalysis'}) && $ENV{'form.firstanalysis'} ne 'no')) { &Apache::lonstatistics::Gather_Full_Student_Data($r); @@ -53,6 +61,7 @@ sub BuildProblemAnalysisPage { } else { $r->print(''); } + $r->rflush(); if (exists($ENV{'form.problemchoice'}) && ! exists($ENV{'form.SelectAnother'})) { $r->print(''); $r->print(' 'x5); + $r->print(''); + $r->print(' 'x5); # $r->print('
'); # my ($symb,$part,$resid) = &get_problem_symb( &Apache::lonnet::unescape($ENV{'form.problemchoice'}) ); + $r->rflush(); # my $resource = &get_resource_from_symb($symb); if (defined($resource)) { + $r->print('

'.$resource->{'title'}.'

'); + $r->print('

'.$resource->{'src'}.'

'); + $r->rflush(); my %Data = &get_problem_data($resource->{'src'}); + my $PerformanceData = + &Apache::loncoursedata::get_optionresponse_data + (\@Students,$symb,$resid); my $ORdata = $Data{$part.'.'.$resid}; + if (exists($ENV{'form.ExcelOutput'}) && + defined($PerformanceData)) { + my $result = &prepare_excel_sheet($r,$resource, + $PerformanceData,$ORdata); + $r->print($result); + $r->rflush(); + } ## ## Render the problem my $base; @@ -93,31 +119,34 @@ sub BuildProblemAnalysisPage { ''. $rendered_problem. ''); - ## - ## Analyze the problem - my $PerformanceData = - &Apache::loncoursedata::get_optionresponse_data - (\@Students,$symb,$resid); - if (defined($PerformanceData) && - ref($PerformanceData) eq 'ARRAY') { - if ($ENV{'form.AnalyzeOver'} eq 'Tries') { - my $analysis_html = &tries_analysis($PerformanceData, - $ORdata); - $r->print($analysis_html); - } elsif ($ENV{'form.AnalyzeOver'} eq 'Time') { - my $analysis_html = &time_analysis($PerformanceData, - $ORdata); - $r->print($analysis_html); + $r->rflush(); + if (! exists($ENV{'form.ExcelOutput'})) { + ## + ## Analyze the problem + if (defined($PerformanceData) && + ref($PerformanceData) eq 'ARRAY') { + if ($ENV{'form.AnalyzeOver'} eq 'Tries') { + my $analysis_html = &tries_analysis($r, + $PerformanceData, + $ORdata); + $r->print($analysis_html); + $r->rflush(); + } elsif ($ENV{'form.AnalyzeOver'} eq 'Time') { + my $analysis_html = &time_analysis($PerformanceData, + $ORdata); + $r->print($analysis_html); + $r->rflush(); + } else { + $r->print('

'. + &mt('The analysis you have selected is '. + 'not supported at this time'). + '

'); + } } else { $r->print('

'. - &mt('The analysis you have selected is '. - 'not supported at this time'). + &mt('There is no student data for this problem.'). '

'); } - } else { - $r->print('

'. - &mt('There is no student data for this problem.'). - '

'); } } else { $r->print('resource is undefined'); @@ -132,7 +161,6 @@ sub BuildProblemAnalysisPage { } } - ######################################################### ######################################################### ## @@ -142,6 +170,7 @@ sub BuildProblemAnalysisPage { ######################################################### sub build_foil_index { my ($ORdata) = @_; + return if (! exists($ORdata->{'Foils'})); my %Foildata = %{$ORdata->{'Foils'}}; my @Foils = sort(keys(%Foildata)); my %Concepts; @@ -164,8 +193,8 @@ sub build_foil_index { eight => 8, nine => 9, ten => 10,); - my $a1 = $a; - my $b1 = $b; + my $a1 = lc($a); + my $b1 = lc($b); if (exists($Numbers{$a})) { $a1 = $Numbers{$a}; } @@ -176,43 +205,70 @@ sub build_foil_index { }; my @Concepts; foreach my $concept (sort $sortfunction (keys(%Concepts))) { - push(@Concepts,{name => $concept, + push(@Concepts,{ name => $concept, foils => [@{$Concepts{$concept}}]}); push(@Foils,(@{$Concepts{$concept}})); } # # Build up the table of row labels. my $table = ''."\n"; - $table .= ''. - ''. - ''. - ''. - ''. - ''. - ''. - "\n"; + if (@Concepts > 1) { + $table .= ''. + ''. + ''. + ''. + ''. + ''. + ''. + "\n"; + } else { + $table .= ''. + ''. + ''. + ''. + ''. + "\n"; + } my $conceptindex = 1; my $foilindex = 1; foreach my $concept (@Concepts) { my @FoilsInConcept = @{$concept->{'foils'}}; my $firstfoil = shift(@FoilsInConcept); - $table .= ''. - ''. - ''. - ''. - ''. - ''. - ''. - "\n"; - foreach my $foilid (@FoilsInConcept) { + if (@Concepts > 1) { $table .= ''. - ''. - ''. - ''. - ''. - ''. - ''. + ''. + ''. + ''. + ''. + ''. + ''. "\n"; + } else { + $table .= ''. + ''. + ''. + ''. + ''. + "\n"; + } + foreach my $foilid (@FoilsInConcept) { + if (@Concepts > 1) { + $table .= ''. + ''. + ''. + ''. + ''. + ''. + ''. + "\n"; + } else { + $table .= ''. + ''. + ''. + ''. + ''. + "\n"; + } } continue { $foilindex++; } @@ -220,9 +276,29 @@ sub build_foil_index { $conceptindex++; } $table .= "
'.&mt('Concept Number').''.&mt('Concept').''.&mt('Foil Number').''.&mt('Foil Name').''.&mt('Foil Text').''.&mt('Correct Value').'
'.&mt('Concept Number').''.&mt('Concept').''.&mt('Foil Number').''.&mt('Foil Name').''.&mt('Foil Text').''.&mt('Correct Value').'
'.&mt('Foil Number').''.&mt('Foil Name').''.&mt('Foil Text').''.&mt('Correct Value').'
'.$conceptindex.''.$concept->{'name'}.''.$foilindex++.''.$Foildata{$firstfoil}->{'name'}.''.$Foildata{$firstfoil}->{'text'}.''.$Foildata{$firstfoil}->{'value'}.'
'.$foilindex.''.$Foildata{$foilid}->{'name'}.''.$Foildata{$foilid}->{'text'}.''.$Foildata{$foilid}->{'value'}.''.$conceptindex.''.$concept->{'name'}.''.$foilindex++.''.$Foildata{$firstfoil}->{'name'}.''.$Foildata{$firstfoil}->{'text'}.''.$Foildata{$firstfoil}->{'value'}.'
'.$foilindex++.''.$Foildata{$firstfoil}->{'name'}.''.$Foildata{$firstfoil}->{'text'}.''.$Foildata{$firstfoil}->{'value'}.'
'.$foilindex.''.$Foildata{$foilid}->{'name'}.''.$Foildata{$foilid}->{'text'}.''.$Foildata{$foilid}->{'value'}.'
'.$foilindex.''.$Foildata{$foilid}->{'name'}.''.$Foildata{$foilid}->{'text'}.''.$Foildata{$foilid}->{'value'}.'
\n"; + # + # Build option index with color stuff return ($table,\@Foils,\@Concepts); } +sub build_option_index { + my ($ORdata)= @_; + my $table = "\n"; + my $optionindex = 0; + my @Rows; + foreach my $option (&mt('correct option chosen'),@{$ORdata->{'Options'}}) { + push (@Rows, + ''. + ''. + ''. + "\n"); + } + shift(@Rows); # Throw away 'correct option chosen' color + $table .= join('',reverse(@Rows)); + $table .= "
'. + (' 'x4).''.$option.'
\n"; +} + ######################################################### ######################################################### ## @@ -231,70 +307,150 @@ sub build_foil_index { ######################################################### ######################################################### sub tries_analysis { - my ($PerformanceData,$ORdata) = @_; + my ($r,$PerformanceData,$ORdata) = @_; my $mintries = 1; my $maxtries = $ENV{'form.NumPlots'}; - my %ResponseData = &analyze_option_data_by_tries($PerformanceData, - $mintries,$maxtries); my ($table,$Foils,$Concepts) = &build_foil_index($ORdata); + if ((@$Concepts < 2) && ($ENV{'form.AnalyzeAs'} ne 'Foils')) { + $table = '

'. + &mt('Not enough data for concept analysis. '. + 'Performing Foil Analysis'). + '

'.$table; + $ENV{'form.AnalyzeAs'} = 'Foils'; + } + my %ResponseData = &analyze_option_data_by_tries($r,$PerformanceData, + $mintries,$maxtries); + my $analysis = ''; + if ($ENV{'form.AnalyzeAs'} eq 'Foils') { + $analysis = &Tries_Foil_Analysis($mintries,$maxtries,$Foils, + \%ResponseData,$ORdata); + } else { + $analysis = &Tries_Concept_Analysis($mintries,$maxtries, + $Concepts,\%ResponseData,$ORdata); + } + $table .= $analysis; + return $table; +} + +sub Tries_Foil_Analysis { + my ($mintries,$maxtries,$Foils,$respdat,$ORdata) = @_; + my %ResponseData = %$respdat; # # Compute the data neccessary to make the plots - my @PlotData; - my $xlabel; - if ($ENV{'form.AnalyzeAs'} eq 'Foils') { - $xlabel = 'Foil Number'; - foreach my $foilid (@$Foils) { - for (my $i=$mintries;$i<=$maxtries;$i++) { - # - # Gather the per-attempt data - my $percent; - if ($ResponseData{$foilid}->[$i]->{'total'} == 0) { - $percent = 0; - } else { - $percent = $ResponseData{$foilid}->[$i]->{'correct'} / - $ResponseData{$foilid}->[$i]->{'total'}; - } - push (@{$PlotData[$i]->{'total'}}, - $ResponseData{$foilid}->[$i]->{'total'}); - push (@{$PlotData[$i]->{'good'}},100 * $percent); - push (@{$PlotData[$i]->{'bad'}}, 100 *(1-$percent)); + my @PlotData; + foreach my $foilid (@$Foils) { + for (my $i=$mintries;$i<=$maxtries;$i++) { + if ($ResponseData{$foilid}->[$i]->{'_total'} == 0) { + push(@{$PlotData[$i]->{'_correct'}},0); + } else { + push(@{$PlotData[$i]->{'_correct'}}, + 100*$ResponseData{$foilid}->[$i]->{'_correct'}/ + $ResponseData{$foilid}->[$i]->{'_total'}); } - } - } else { - # Concept analysis - $xlabel = 'Concept Number'; - foreach my $concept (@$Concepts) { - for (my $i=$mintries;$i<=$maxtries;$i++) { - # - # Gather the per-attempt data - my ($correct,$incorrect,$total); - foreach my $foil (@{$concept->{'foils'}}) { - $correct += $ResponseData{$foil}->[$i]->{'correct'}; - $incorrect += $ResponseData{$foil}->[$i]->{'incorrect'}; - $total += $ResponseData{$foil}->[$i]->{'total'}; - } - push (@{$PlotData[$i]->{'correct'}}, $correct); - push (@{$PlotData[$i]->{'incorrect'}},$incorrect); - push (@{$PlotData[$i]->{'total'}}, $total); - my $percent; - if ($total == 0) { - $percent = 0; + foreach my $option (@{$ORdata->{'Options'}}) { + push(@{$PlotData[$i]->{'_total'}}, + $ResponseData{$foilid}->[$i]->{'_total'}); + if ($ResponseData{$foilid}->[$i]->{'_total'} == 0) { + push (@{$PlotData[$i]->{$option}},0); } else { - $percent = $correct/$total; + if ($ResponseData{$foilid}->[$i]->{'_total'} == + $ResponseData{$foilid}->[$i]->{'_correct'}) { + push(@{$PlotData[$i]->{$option}},0); + } else { + push (@{$PlotData[$i]->{$option}}, + 100 * $ResponseData{$foilid}->[$i]->{$option} / + ($ResponseData{$foilid}->[$i]->{'_total'} - + $ResponseData{$foilid}->[$i]->{'_correct'})); + } } - push (@{$PlotData[$i]->{'good'}},100*$percent); - push (@{$PlotData[$i]->{'bad'}},100*(1-$percent)); } } } # # Build a table for the plots - $table .= "\n"; - my @Plots; + my $analysis_html = "
\n"; + my $foilkey = &build_option_index($ORdata); + for (my $i=$mintries;$i<=$maxtries;$i++) { + my $count = $ResponseData{'_total'}->[$i]; + if ($count == 0) { + $count = 'no submissions'; + } elsif ($count == 1) { + $count = '1 submission'; + } else { + $count = $count.' submissions'; + } + my $title = 'Attempt '.$i.', '.$count; + my @Datasets; + foreach my $option ('_correct',@{$ORdata->{'Options'}}) { + next if (! exists($PlotData[$i]->{$option})); + push(@Datasets,$PlotData[$i]->{$option}); + } + my $correctgraph = &Apache::loncommon::DrawGraph + ($title,'Foil Number','Percent Correct', + 100,$plotcolors,$Datasets[0]); + $analysis_html.= ''; + ## + ## + for (my $i=0; $i< scalar(@{$Datasets[0]});$i++) { + $Datasets[0]->[$i]=0; + } + $count = $ResponseData{'_total'}->[$i]-$ResponseData{'_correct'}->[$i]; + if ($count == 0) { + $count = 'no submissions'; + } elsif ($count == 1) { + $count = '1 submission'; + } else { + $count = $count.' submissions'; + } + $title = 'Attempt '.$i.', '.$count; + my $incorrectgraph = &Apache::loncommon::DrawGraph + ($title,'Foil Number','% Option Chosen Incorrectly', + 100,$plotcolors,@Datasets); + $analysis_html.= ''; + $analysis_html.= '\n"; + } + $analysis_html .= "
'.$correctgraph.''.$incorrectgraph.''.$foilkey."
\n"; + return $analysis_html; +} + +sub Tries_Concept_Analysis { + my ($mintries,$maxtries,$Concepts,$respdat,$ORdata) = @_; + my %ResponseData = %$respdat; + my $analysis_html = "\n"; + # + # Compute the data neccessary to make the plots + my @PlotData; + # Concept analysis + # + # Note: we do not bother with characterizing the students incorrect + # answers at the concept level because an incorrect answer for one foil + # may be a correct answer for another foil. + my %ConceptData; + foreach my $concept (@{$Concepts}) { + for (my $i=$mintries;$i<=$maxtries;$i++) { + # + # Gather the per-attempt data + my $cdata = $ConceptData{$concept}->[$i]; + foreach my $foilid (@{$concept->{'foils'}}) { + $cdata->{'_correct'} += + $ResponseData{$foilid}->[$i]->{'_correct'}; + $cdata->{'_total'} += + $ResponseData{$foilid}->[$i]->{'_total'}; + } + push (@{$PlotData[$i]->{'_total'}},$cdata->{'_total'}); + if ($cdata->{'_total'} == 0) { + push (@{$PlotData[$i]->{'_correct'}},0); + } else { + push (@{$PlotData[$i]->{'_correct'}}, + 100*$cdata->{'_correct'}/$cdata->{'_total'}); + } + } + } + # Build a table for the plots for (my $i=$mintries;$i<=$maxtries;$i++) { - my $minstu = $PlotData[$i]->{'total'}->[0]; - my $maxstu = $PlotData[$i]->{'total'}->[0]; - foreach my $count (@{$PlotData[$i]->{'total'}}) { + my $minstu = $PlotData[$i]->{'_total'}->[0]; + my $maxstu = $PlotData[$i]->{'_total'}->[0]; + foreach my $count (@{$PlotData[$i]->{'_total'}}) { if ($minstu > $count) { $minstu = $count; } @@ -302,71 +458,45 @@ sub tries_analysis { $maxstu = $count; } } - $maxstu = 0 if (! $maxstu); - $minstu = 0 if (! $minstu); + $maxstu = 0 if (! defined($maxstu)); + $minstu = 0 if (! defined($minstu)); my $title; - if ($maxstu == $minstu) { - $title = 'Attempt '.$i.', '.$maxstu.' students'; + my $count = $ResponseData{'_total'}->[$i]; + if ($count == 0) { + $count = 'no submissions'; + } elsif ($count == 1) { + $count = '1 submission'; } else { - $title = 'Attempt '.$i.', '.$minstu.'-'.$maxstu.' students'; + $count = $count.' submissions'; } - my $graphlink = &Apache::loncommon::DrawGraph($title, - $xlabel, - 'Percent Correct', - 100, - $PlotData[$i]->{'good'}, - $PlotData[$i]->{'bad'}); - push(@Plots,$graphlink); - } - # - # Should this be something the user can set? Too many dialogs! - my $plots_per_row = 2; - while (my $plotlink = shift(@Plots)) { - $table .= ''; - for (my $i=1;$i<$plots_per_row;$i++) { - if ($plotlink = shift(@Plots)) { - $table .= ''; - } else { - $table .= ''; - } - } - $table .= "\n"; + $title = 'Attempt '.$i.', '.$count; + my $graphlink = &Apache::loncommon::DrawGraph + ($title,'Concept Number','Percent Correct', + 100,$plotcolors,$PlotData[$i]->{'_correct'}); + $analysis_html.= '\n"; } - $table .= "
'.$plotlink.''.$plotlink.'
'.$graphlink."
\n"; - return ($table); + $analysis_html .= "\n"; + return $analysis_html; } sub analyze_option_data_by_tries { - my ($PerformanceData,$mintries,$maxtries) = @_; + my ($r,$PerformanceData,$mintries,$maxtries) = @_; my %Trydata; $mintries = 1 if (! defined($mintries) || $mintries < 1); $maxtries = $mintries if (! defined($maxtries) || $maxtries < $mintries); foreach my $row (@$PerformanceData) { next if (! defined($row)); - my ($grading,$submission,$time,$tries) = @$row; - my @Foilgrades = split('&',$grading); - my @Foilsubs = split('&',$submission); - for (my $numtries = 1; $numtries <= $maxtries; $numtries++) { - if ($tries == $numtries) { - foreach my $foilgrade (@Foilgrades) { - my ($foilid,$correct) = split('=',$foilgrade); - if ($correct) { - $Trydata{$foilid}->[$numtries]->{'correct'}++; - } else { - $Trydata{$foilid}->[$numtries]->{'incorrect'}++; - } - } + my $tries = &get_tries_from_row($row); + my %Row = &Process_Row($row); + next if (! %Row); + while (my ($foilid,$href) = each(%Row)) { + if (! ref($href)) { + $Trydata{$foilid}->[$tries] += $href; + next; + } + while (my ($option,$value) = each(%$href)) { + $Trydata{$foilid}->[$tries]->{$option}+=$value; } - } - } - foreach my $foilid (keys(%Trydata)) { - foreach my $tryhash (@{$Trydata{$foilid}}) { - next if ((! exists($tryhash->{'correct'}) && - ! exists($tryhash->{'incorrect'})) || - ($tryhash->{'correct'} < 1 && - $tryhash->{'incorrect'} < 1)); - $tryhash->{'total'} = $tryhash->{'correct'} + - $tryhash->{'incorrect'}; } } return %Trydata; @@ -381,106 +511,623 @@ sub analyze_option_data_by_tries { ######################################################### sub time_analysis { my ($PerformanceData,$ORdata) = @_; - my $num_plots = $ENV{'form.NumPlots'}; my ($table,$Foils,$Concepts) = &build_foil_index($ORdata); + if ((@$Concepts < 2) && ($ENV{'form.AnalyzeAs'} ne 'Foils')) { + $table = '

'. + &mt('Not enough data for concept analysis. '. + 'Performing Foil Analysis'). + '

'.$table; + $ENV{'form.AnalyzeAs'} = 'Foils'; + } + my $num_plots = $ENV{'form.NumPlots'}; my $num_data = scalar(@$PerformanceData)-1; my $percent = sprintf('%2f',100/$num_plots); + # + $table .= "\n"; for (my $i=0;$i<$num_plots;$i++) { + ## my $starttime = &Apache::lonhtmlcommon::get_date_from_form ('startdate_'.$i); my $endtime = &Apache::lonhtmlcommon::get_date_from_form ('enddate_'.$i); - my ($begin_index,$end_index,$plottitle,$plothtml,$data); if (! defined($starttime) || ! defined($endtime)) { - $begin_index = $i*int($num_data/$num_plots); - $end_index = ($i+1)*int($num_data/$num_plots); - my $lownum = sprintf('%2.1f',$i*$percent); - $lownum =~ s/(\.0)$//; - my $highnum = sprintf('%2.1f',($i+1)*$percent); - $highnum =~ s/(\.0)$//; - $plottitle = $lownum.'% to '.$highnum.'% of submissions'; - } else { - my $j; - while (++$j < scalar(@$PerformanceData)) { - last if ($PerformanceData->[$j]->[2] > $starttime); - } - $begin_index = $j; - while (++$j < scalar(@$PerformanceData)) { - last if ($PerformanceData->[$j]->[2] > $endtime); - } - $end_index = $j; - $plottitle = 'Tries plot '.($i+1); - } - ($plothtml,$starttime,$endtime,$data) = - &analyze_option_data_by_time($PerformanceData, - $begin_index,$end_index, - $plottitle, - @$Foils); + my $sec_in_day = 86400; + my $last_sub_time = &get_time_from_row($PerformanceData->[-1]); + my ($sday,$smon,$syear); + (undef,undef,undef,$sday,$smon,$syear) = + localtime($last_sub_time - $sec_in_day*$i); + $starttime = &Time::Local::timelocal(0,0,0,$sday,$smon,$syear); + $endtime = $starttime + $sec_in_day; + if ($i == ($num_plots -1 )) { + $starttime = &get_time_from_row($PerformanceData->[0]); + } + } my $startdateform = &Apache::lonhtmlcommon::date_setter ('Statistics','startdate_'.$i,$starttime); my $enddateform = &Apache::lonhtmlcommon::date_setter ('Statistics','enddate_'.$i,$endtime); - $plothtml.= "
\n". - "Start Time: "." ".$startdateform."
\n". - "End Time  : "." ".$enddateform."
\n"; - $table.=$plothtml; + # + my $begin_index; + my $end_index; + my $j; + while (++$j < scalar(@$PerformanceData)) { + last if (&get_time_from_row($PerformanceData->[$j]) > $starttime); + } + $begin_index = $j; + while (++$j < scalar(@$PerformanceData)) { + last if (&get_time_from_row($PerformanceData->[$j]) > $endtime); + } + $end_index = $j; + ## + my $interval = { + begin_index => $begin_index, + end_index => $end_index, + startdateform => $startdateform, + enddateform => $enddateform, + }; + if ($ENV{'form.AnalyzeAs'} eq 'Foils') { + $table .= &Foil_Time_Analysis($PerformanceData,$ORdata,$Foils, + $interval); + } else { + $table .= &Concept_Time_Analysis($PerformanceData,$ORdata, + $Concepts,$interval); + } } + # return $table; } -sub analyze_option_data_by_time { - my ($PerformanceData,$begin_index,$end_index,$description,@Foils) = @_; +sub Foil_Time_Analysis { + my ($PerformanceData,$ORdata,$Foils,$interval) = @_; + my $analysis_html; + my $foilkey = &build_option_index($ORdata); + my ($begin_index,$end_index) = ($interval->{'begin_index'}, + $interval->{'end_index'}); my %TimeData; # - # Get the start and end times for this segment of the plot - my $starttime = $PerformanceData->[$begin_index]->[2]; - my $endtime = $PerformanceData->[$end_index ]->[2]; - # # Compute the number getting the foils correct or incorrects - for (my $i=$begin_index;$i<=$end_index;$i++) { - my $row = $PerformanceData->[$i]; + for (my $j=$begin_index;$j<=$end_index;$j++) { + my $row = $PerformanceData->[$j]; next if (! defined($row)); - my ($grading,$submission,$time,$tries) = @$row; - my @Foilgrades = split('&',$grading); - my @Foilsubs = split('&',$submission); - foreach my $foilgrade (@Foilgrades) { - my ($foilid,$correct) = split('=',$foilgrade); - if ($correct) { - $TimeData{$foilid}->{'correct'}++; + my %Row = &Process_Row($row); + while (my ($foilid,$href) = each(%Row)) { + if (! ref($href)) { + $TimeData{$foilid} += $href; + next; + } + while (my ($option,$value) = each(%$href)) { + $TimeData{$foilid}->{$option}+=$value; + } + } + } + my @Plotdata; + foreach my $foil (@$Foils) { + my $total = $TimeData{$foil}->{'_total'}; + if ($total == 0) { + push(@{$Plotdata[0]},0); + } else { + push(@{$Plotdata[0]}, + 100 * $TimeData{$foil}->{'_correct'} / $total); + } + my $total_incorrect = $total - $TimeData{$foil}->{'_correct'}; + my $optionidx = 1; + foreach my $option (@{$ORdata->{'Options'}}) { + if ($total_incorrect == 0) { + push(@{$Plotdata[$optionidx]},0); } else { - $TimeData{$foilid}->{'incorrect'}++; + push(@{$Plotdata[$optionidx]}, + 100 * $TimeData{$foil}->{$option} / $total_incorrect); } + } continue { + $optionidx++; } } # - # Compute the total and percent correct - my @Plotdata1; - my @Plotdata2; - foreach my $foilid (@Foils) { - if (! exists($TimeData{$foilid}->{'correct'})) { - $TimeData{$foilid}->{'correct'} = 0; + # Create the plot + my $count = $end_index-$begin_index; + my $title; + if ($count == 0) { + $title = 'no submissions'; + } elsif ($count == 1) { + $title = 'one submission'; + } else { + $title = $count.' submissions'; + } + my $correctplot = &Apache::loncommon::DrawGraph($title, + 'Foil Number', + 'Percent Correct', + 100, + $plotcolors, + $Plotdata[0]); + for (my $j=0; $j< scalar(@{$Plotdata[0]});$j++) { + $Plotdata[0]->[$j]=0; + } + $count = $end_index-$begin_index-$TimeData{'_correct'}; + if ($count == 0) { + $title = 'no submissions'; + } elsif ($count == 1) { + $title = 'one submission'; + } else { + $title = $count.' submissions'; + } + my $incorrectplot = &Apache::loncommon::DrawGraph($title, + 'Foil Number', + 'Incorrect Option Choice', + 100, + $plotcolors, + @Plotdata); + $analysis_html.=''. + ''. + ''. + ''."\n"; + $analysis_html.= ''.''. + "\n"; + return $analysis_html; +} + +sub Concept_Time_Analysis { + my ($PerformanceData,$ORdata,$Concepts,$interval) = @_; + my $analysis_html; + ## + ## Determine starttime, endtime, startindex, endindex + my ($begin_index,$end_index) = ($interval->{'begin_index'}, + $interval->{'end_index'}); + my %TimeData; + # + # Compute the number getting the foils correct or incorrects + for (my $j=$begin_index;$j<=$end_index;$j++) { + my $row = $PerformanceData->[$j]; + next if (! defined($row)); + my %Row = &Process_Row($row); + while (my ($foilid,$href) = each(%Row)) { + if (! ref($href)) { + $TimeData{$foilid} += $href; + next; + } + while (my ($option,$value) = each(%$href)) { + $TimeData{$foilid}->{$option}+=$value; + } + } + } + # + # Put the data in plottable form + my @Plotdata; + foreach my $concept (@$Concepts) { + my ($total,$correct); + foreach my $foil (@{$concept->{'foils'}}) { + $total += $TimeData{$foil}->{'_total'}; + $correct += $TimeData{$foil}->{'_correct'}; } - if (! exists($TimeData{$foilid}->{'incorrect'})) { - $TimeData{$foilid}->{'incorrect'} = 0; + if ($total == 0) { + push(@Plotdata,0); + } else { + push(@Plotdata,100 * $correct / $total); } - $TimeData{$foilid}->{'total'} = $TimeData{$foilid}->{'correct'} + - $TimeData{$foilid}->{'incorrect'}; - $TimeData{$foilid}->{'percent_corr'} = 100 * - $TimeData{$foilid}->{'correct'} / - $TimeData{$foilid}->{'total'}; - push (@Plotdata1, $TimeData{$foilid}->{'percent_corr'}); - push (@Plotdata2,100-$TimeData{$foilid}->{'percent_corr'}); } # # Create the plot - my $graphlink = &Apache::loncommon::DrawGraph - ($description,#'Time Interval Analysis', - 'Foil Number', - 'Percent Correct / Incorrect', - 100, - \@Plotdata1,\@Plotdata2); + my $title = ($end_index - $begin_index).' submissions'; + my $correctplot = &Apache::loncommon::DrawGraph($title, + 'Concept Number', + 'Percent Correct', + 100, + $plotcolors, + \@Plotdata); + $analysis_html.=''. + ''. + ''. + "\n"; + return $analysis_html; +} + +######################################################### +######################################################### +## +## Excel output +## +######################################################### +######################################################### +sub prepare_excel_sheet { + my ($r,$resource,$PerformanceData,$ORdata) = @_; + my $response = ''; + my (undef,$Foils,$Concepts) = &build_foil_index($ORdata); + # + # Create excel worksheet + my $filename = '/prtspool/'. + $ENV{'user.name'}.'_'.$ENV{'user.domain'}.'_'. + time.'_'.rand(1000000000).'.xls'; + my $workbook = Spreadsheet::WriteExcel->new('/home/httpd'.$filename); + if (! defined($workbook)) { + $r->log_error("Error creating excel spreadsheet $filename: $!"); + $r->print('

'.&mt("Unable to create new Excel file. ". + "This error has been logged. ". + "Please alert your LON-CAPA administrator"). + '

'); + return undef; + } + # + $workbook->set_tempdir('/home/httpd/perl/tmp'); + # + # Define some potentially useful formats + my $format; + $format->{'header'} = $workbook->add_format(bold => 1, + bottom => 1, + align => 'center'); + $format->{'bold'} = $workbook->add_format(bold=>1); + $format->{'h1'} = $workbook->add_format(bold=>1, size=>18); + $format->{'h2'} = $workbook->add_format(bold=>1, size=>16); + $format->{'h3'} = $workbook->add_format(bold=>1, size=>14); + $format->{'date'} = $workbook->add_format(num_format=> + 'mmm d yyyy hh:mm AM/PM'); # - return ($graphlink,$starttime,$endtime,\%TimeData); + # Create and populate main worksheets + my $problem_data_sheet = $workbook->addworksheet('Problem Data'); + my $student_data_sheet = $workbook->addworksheet('Student Data'); + my $response_data_sheet = $workbook->addworksheet('Response Data'); + foreach my $sheet ($problem_data_sheet,$student_data_sheet, + $response_data_sheet) { + $sheet->write(0,0,$resource->{'title'},$format->{'h2'}); + $sheet->write(1,0,$resource->{'src'},$format->{'h3'}); + } + # + my $result; + $result = &build_problem_data_worksheet($problem_data_sheet,$format, + $Concepts,$ORdata); + if ($result ne 'okay') { + # Do something useful + } + $result = &build_student_data_worksheet($student_data_sheet,$format); + if ($result ne 'okay') { + # Do something useful + } + $result = &build_response_data_worksheet($response_data_sheet,$format, + $PerformanceData,$Foils, + $ORdata); + if ($result ne 'okay') { + # Do something useful + } + $response_data_sheet->activate(); + # + # Close the excel file + $workbook->close(); + # + # Write a link to allow them to download it + $result .= '

'.&mt('Excel Raw Data Output').'

'. + '

'. + &mt('Your Excel spreadsheet.'). + '

'."\n"; + return $result; +} + +sub build_problem_data_worksheet { + my ($worksheet,$format,$Concepts,$ORdata) = @_; + my $rows_output = 3; + my $cols_output = 0; + $worksheet->write($rows_output++,0,'Problem Structure',$format->{'h3'}); + ## + ## + my @Headers; + if (@$Concepts > 1) { + @Headers = ("Concept\nNumber",'Concept',"Foil\nNumber", + 'Foil Name','Foil Text','Correct value'); + } else { + @Headers = ('Foil Number','FoilName','Foil Text','Correct value'); + } + $worksheet->write_row($rows_output++,0,\@Headers,$format->{'header'}); + my %Foildata = %{$ORdata->{'Foils'}}; + my $conceptindex = 1; + my $foilindex = 1; + foreach my $concept (@$Concepts) { + my @FoilsInConcept = @{$concept->{'foils'}}; + my $firstfoil = shift(@FoilsInConcept); + if (@$Concepts > 1) { + $worksheet->write_row($rows_output++,0, + [$conceptindex, + $concept->{'name'}, + $foilindex++, + $Foildata{$firstfoil}->{'name'}, + $Foildata{$firstfoil}->{'text'}, + $Foildata{$firstfoil}->{'value'},]); + } else { + $worksheet->write_row($rows_output++,0, + [ $foilindex++, + $Foildata{$firstfoil}->{'name'}, + $Foildata{$firstfoil}->{'text'}, + $Foildata{$firstfoil}->{'value'},]); + } + foreach my $foilid (@FoilsInConcept) { + if (@$Concepts > 1) { + $worksheet->write_row($rows_output++,0, + ['', + '', + $foilindex, + $Foildata{$foilid}->{'name'}, + $Foildata{$foilid}->{'text'}, + $Foildata{$foilid}->{'value'},]); + } else { + $worksheet->write_row($rows_output++,0, + [$foilindex, + $Foildata{$foilid}->{'name'}, + $Foildata{$foilid}->{'text'}, + $Foildata{$foilid}->{'value'},]); + } + } continue { + $foilindex++; + } + } continue { + $conceptindex++; + } + $rows_output++; + $rows_output++; + ## + ## Option data output + $worksheet->write($rows_output++,0,'Options',$format->{'header'}); + foreach my $string (@{$ORdata->{'Options'}}) { + $worksheet->write($rows_output++,0,$string); + } + return 'okay'; +} + +sub build_student_data_worksheet { + my ($worksheet,$format) = @_; + my $rows_output = 3; + my $cols_output = 0; + $worksheet->write($rows_output++,0,'Student Data',$format->{'h3'}); + my @Headers = ('full name','username','domain','section', + "student\nnumber",'identifier'); + $worksheet->write_row($rows_output++,0,\@Headers,$format->{'header'}); + my @Students = @Apache::lonstatistics::Students; + my $studentrows = &Apache::loncoursedata::get_student_data(\@Students); + my %ids; + foreach my $row (@$studentrows) { + my ($mysqlid,$student) = @$row; + $ids{$student}=$mysqlid; + } + foreach my $student (@Students) { + my $name_domain = $student->{'username'}.':'.$student->{'domain'}; + $worksheet->write_row($rows_output++,0, + [$student->{'fullname'}, + $student->{'username'},$student->{'domain'}, + $student->{'section'},$student->{'id'}, + $ids{$name_domain}]); + } + return; +} + +sub build_response_data_worksheet { + my ($worksheet,$format,$PerformanceData,$Foils,$ORdata)=@_; + my $rows_output = 3; + my $cols_output = 0; + $worksheet->write($rows_output++,0,'Response Data',$format->{'h3'}); + $worksheet->set_column(1,1,20); + $worksheet->set_column(2,2,13); + my @Headers = ('identifier','time','award detail','attempt'); + foreach my $foil (@$Foils) { + push (@Headers,$foil.' submission'); + push (@Headers,$foil.' grading'); + } + $worksheet->write_row($rows_output++,0,\@Headers,$format->{'header'}); + # + foreach my $row (@$PerformanceData) { + next if (! defined($row)); + my ($student,$award,$grading,$submission,$time,$tries) = @$row; + my @Foilgrades = split('&',$grading); + my @Foilsubs = split('&',$submission); + my %ResponseData; + for (my $j=0;$j<=$#Foilgrades;$j++) { + my ($foilid,$correct) = split('=',$Foilgrades[$j]); + my (undef,$submission) = split('=',$Foilsubs[$j]); + $submission = &Apache::lonnet::unescape($submission); + $ResponseData{$foilid.' submission'}=$submission; + $ResponseData{$foilid.' award'}=$correct; + } + $worksheet->write($rows_output,$cols_output++,$student); + $worksheet->write($rows_output,$cols_output++, + &calc_serial($time),$format->{'date'}); + $worksheet->write($rows_output,$cols_output++,$award); + $worksheet->write($rows_output,$cols_output++,$tries); + foreach my $foilid (@$Foils) { + $worksheet->write($rows_output,$cols_output++, + $ResponseData{$foilid.' submission'}); + $worksheet->write($rows_output,$cols_output++, + $ResponseData{$foilid.' award'}); + } + $rows_output++; + $cols_output = 0; + } + return; +} + + +## +## The following is copied from datecalc1.pl, part of the +## Spreadsheet::WriteExcel CPAN module. +## +## +###################################################################### +# +# Demonstration of writing date/time cells to Excel spreadsheets, +# using UNIX/Perl time as source of date/time. +# +# Copyright 2000, Andrew Benham, adsb@bigfoot.com +# +###################################################################### +# +# UNIX/Perl time is the time since the Epoch (00:00:00 GMT, 1 Jan 1970) +# measured in seconds. +# +# An Excel file can use exactly one of two different date/time systems. +# In these systems, a floating point number represents the number of days +# (and fractional parts of the day) since a start point. The floating point +# number is referred to as a 'serial'. +# The two systems ('1900' and '1904') use different starting points: +# '1900'; '1.00' is 1 Jan 1900 BUT 1900 is erroneously regarded as +# a leap year - see: +# http://support.microsoft.com/support/kb/articles/Q181/3/70.asp +# for the excuse^H^H^H^H^H^Hreason. +# '1904'; '1.00' is 2 Jan 1904. +# +# The '1904' system is the default for Apple Macs. Windows versions of +# Excel have the option to use the '1904' system. +# +# Note that Visual Basic's "DateSerial" function does NOT erroneously +# regard 1900 as a leap year, and thus its serials do not agree with +# the 1900 serials of Excel for dates before 1 Mar 1900. +# +# Note that StarOffice (at least at version 5.2) does NOT erroneously +# regard 1900 as a leap year, and thus its serials do not agree with +# the 1900 serials of Excel for dates before 1 Mar 1900. +# +###################################################################### +# +# Calculation description +# ======================= +# +# 1900 system +# ----------- +# Unix time is '0' at 00:00:00 GMT 1 Jan 1970, i.e. 70 years after 1 Jan 1900. +# Of those 70 years, 17 (1904,08,12,16,20,24,28,32,36,40,44,48,52,56,60,64,68) +# were leap years with an extra day. +# Thus there were 17 + 70*365 days = 25567 days between 1 Jan 1900 and +# 1 Jan 1970. +# In the 1900 system, '1' is 1 Jan 1900, but as 1900 was not a leap year +# 1 Jan 1900 should really be '2', so 1 Jan 1970 is '25569'. +# +# 1904 system +# ----------- +# Unix time is '0' at 00:00:00 GMT 1 Jan 1970, i.e. 66 years after 1 Jan 1904. +# Of those 66 years, 17 (1904,08,12,16,20,24,28,32,36,40,44,48,52,56,60,64,68) +# were leap years with an extra day. +# Thus there were 17 + 66*365 days = 24107 days between 1 Jan 1904 and +# 1 Jan 1970. +# In the 1904 system, 2 Jan 1904 being '1', 1 Jan 1970 is '24107'. +# +###################################################################### +# +# Copyright (c) 2000, Andrew Benham. +# This program is free software. It may be used, redistributed and/or +# modified under the same terms as Perl itself. +# +# Andrew Benham, adsb@bigfoot.com +# London, United Kingdom +# 11 Nov 2000 +# +###################################################################### + +# Use 1900 date system on all platforms other than Apple Mac (for which +# use 1904 date system). +my $DATE_SYSTEM = ($^O eq 'MacOS') ? 1 : 0; + +#----------------------------------------------------------- +# calc_serial() +# +# Called with (up to) 2 parameters. +# 1. Unix timestamp. If omitted, uses current time. +# 2. GMT flag. Set to '1' to return serial in GMT. +# If omitted, returns serial in appropriate timezone. +# +# Returns date/time serial according to $DATE_SYSTEM selected +#----------------------------------------------------------- +sub calc_serial { + my $time = (defined $_[0]) ? $_[0] : time(); + my $gmtflag = (defined $_[1]) ? $_[1] : 0; + + # Divide timestamp by number of seconds in a day. + # This gives a date serial with '0' on 1 Jan 1970. + my $serial = $time / 86400; + + # Adjust the date serial by the offset appropriate to the + # currently selected system (1900/1904). + if ($DATE_SYSTEM == 0) { # use 1900 system + $serial += 25569; + } else { # use 1904 system + $serial += 24107; + } + + unless ($gmtflag) { + # Now have a 'raw' serial with the right offset. But this + # gives a serial in GMT, which is false unless the timezone + # is GMT. We need to adjust the serial by the appropriate + # timezone offset. + # Calculate the appropriate timezone offset by seeing what + # the differences between localtime and gmtime for the given + # time are. + + my @gmtime = gmtime($time); + my @ltime = localtime($time); + + # For the first 7 elements of the two arrays, adjust the + # date serial where the elements differ. + for (0 .. 6) { + my $diff = $ltime[$_] - $gmtime[$_]; + if ($diff) { + $serial += _adjustment($diff,$_); + } + } + } + + # Perpetuate the error that 1900 was a leap year by decrementing + # the serial if we're using the 1900 system and the date is prior to + # 1 Mar 1900. This has the effect of making serial value '60' + # 29 Feb 1900. + + # This fix only has any effect if UNIX/Perl time on the platform + # can represent 1900. Many can't. + + unless ($DATE_SYSTEM) { + $serial-- if ($serial < 61); # '61' is 1 Mar 1900 + } + return $serial; +} + +sub _adjustment { + # Based on the difference in the localtime/gmtime array elements + # number, return the adjustment required to the serial. + + # We only look at some elements of the localtime/gmtime arrays: + # seconds unlikely to be different as all known timezones + # have an offset of integral multiples of 15 minutes, + # but it's easy to do. + # minutes will be different for timezone offsets which are + # not an exact number of hours. + # hours very likely to be different. + # weekday will differ when localtime/gmtime difference + # straddles midnight. + # + # Assume that difference between localtime and gmtime is less than + # 5 days, then don't have to do maths for day of month, month number, + # year number, etc... + + my ($delta,$element) = @_; + my $adjust = 0; + + if ($element == 0) { # Seconds + $adjust = $delta/86400; # 60 * 60 * 24 + } elsif ($element == 1) { # Minutes + $adjust = $delta/1440; # 60 * 24 + } elsif ($element == 2) { # Hours + $adjust = $delta/24; # 24 + } elsif ($element == 6) { # Day of week number + # Catch difference straddling Sat/Sun in either direction + $delta += 7 if ($delta < -4); + $delta -= 7 if ($delta > 4); + + $adjust = $delta; + } + return $adjust; } ######################################################### @@ -582,7 +1229,7 @@ sub CreateInterface { ## $Str .= ''."\n"; $Str .= '
'.$correctplot.''.$incorrectplot.''.$foilkey.'
'. + 'Start Time:'. + '  '.$interval->{'startdateform'}.'
'. + 'End Time  : '. + ' '.$interval->{'enddateform'}.'
'. +# 'Plot Title  :'. +# (" "x3).$interval->{'titleform'}. + '
'.$correctplot.''. + 'Start Time:  '.$interval->{'startdateform'}.'
'. + 'End Time  : '. + ' '.$interval->{'enddateform'}.'
'. +# 'Plot Title  :'.(" "x3). +# $interval->{'titleform'}. + '
'."\n"; - return ($Str); + return $Str; } sub OptionResponseProblemSelector { @@ -592,7 +1239,6 @@ sub OptionResponseProblemSelector { next if ($seq->{'num_assess'}<1); my $seq_str = ''; foreach my $res (@{$seq->{'contents'}}) { -# &Apache::lonnet::logthis('checking '.$res->{'title'}); next if ($res->{'type'} ne 'assessment'); foreach my $part (@{$res->{'parts'}}) { my $partdata = $res->{'partdata'}->{$part}; @@ -655,20 +1301,58 @@ sub get_resource_from_symb { return undef; } +sub get_time_from_row { + my ($row) = @_; + if (ref($row)) { + return $row->[3]; + } + return undef; +} + +sub get_tries_from_row { + my ($row) = @_; + if (ref($row)) { + return $row->[5]; + } + return undef; +} + +sub Process_Row { + my ($row) = @_; + my %RowData; + my ($student_id,$award,$grading,$submission,$time,$tries) = @$row; + return undef if ($award eq 'MISSING_ANSWER'); + if ($award =~ /(APPROX_ANS|EXACT_ANS)/) { + $RowData{'_correct'} = 1; + } + $RowData{'_total'} = 1; + my @Foilgrades = split('&',$grading); + my @Foilsubs = split('&',$submission); + for (my $j=0;$j<=$#Foilgrades;$j++) { + my ($foilid,$correct) = split('=',$Foilgrades[$j]); + my (undef,$submission) = split('=',$Foilsubs[$j]); + if ($correct) { + $RowData{$foilid}->{'_correct'}++; + } else { + $submission = &Apache::lonnet::unescape($submission); + $RowData{$foilid}->{$submission}++; + } + $RowData{$foilid}->{'_total'}++; + } + return %RowData; +} + +## +## get problem data and put it into a useful data structure. +## note: we must force each foil and option to not begin or end with +## spaces as they are stored without such data. +## sub get_problem_data { my ($url) = @_; -# my $Answ=&Apache::lonnet::ssi($URI,('grade_target' => 'analyze', -# 'grade_username' => $sname, -# 'grade_domain' => $sdom, -# 'grade_courseid' => $cid, -# 'grade_symb' => $symb)); my $Answ=&Apache::lonnet::ssi($url,('grade_target' => 'analyze')); (my $garbage,$Answ)=split(/_HASH_REF__/,$Answ,2); my %Answer; %Answer=&Apache::lonnet::str2hash($Answ); -# &Apache::lonnet::logthis('keys of %Answer = '.join(', ',(keys(%Answer)))); -# &Apache::lonnet::logthis('$Answer{parts} = '. -# join(', ',@{$Answer{'parts'}})); my %Partdata; foreach my $part (@{$Answer{'parts'}}) { while (my($key,$value) = each(%Answer)) { @@ -677,7 +1361,6 @@ sub get_problem_data { if (ref($value) eq 'ARRAY') { if ($key eq 'options') { $Partdata{$part}->{'Options'}=$value; - &Apache::lonnet::logthis('Options = '.join(', ',@$value)); } elsif ($key eq 'concepts') { $Partdata{$part}->{'Concepts'}=$value; } elsif ($key =~ /^concept\.(.*)$/) { @@ -687,43 +1370,19 @@ sub get_problem_data { $concept; } } - # &Apache::lonnet::logthis($part.' '.$key.' (array) = '. - # join(', ',@$value)); } else { - $value =~ s/^\s*//g; - $value =~ s/\s*$//g; if ($key=~ /^foil\.text\.(.*)$/) { my $foil = $1; $Partdata{$part}->{'Foils'}->{$foil}->{'name'}=$foil; + $value =~ s/(\s*$|^\s*)//g; $Partdata{$part}->{'Foils'}->{$foil}->{'text'}=$value; } elsif ($key =~ /^foil\.value\.(.*)$/) { my $foil = $1; $Partdata{$part}->{'Foils'}->{$foil}->{'value'}=$value; } - # &Apache::lonnet::logthis($part.' '.$key.' = '.$value); } } } - -# my $parts=''; -# foreach my $elm (@{$Answer{"parts"}}) { -# $parts.="$elm,"; -# } -# chop($parts); -# my $conc=''; -# foreach my $elm (@{$Answer{"$parts.concepts"}}) { -# $conc.="$elm@"; -# } -# chop($conc); -# -# @Concepts=split(/\@/,$conc); -# foreach my $concept (@{$Answer{"$parts.concepts"}}) { -# foreach my $foil (@{$Answer{"$parts.concept.$concept"}}) { -# $foil_to_concept{$foil} = $concept; -# #$ConceptData{$foil} = $Answer{"$parts.foil.value.$foil"}; -# } -# } -# return $symb; return %Partdata; }