--- loncom/interface/statistics/lonproblemanalysis.pm 2003/10/14 21:58:25 1.37 +++ loncom/interface/statistics/lonproblemanalysis.pm 2003/10/17 22:05:45 1.42 @@ -1,7 +1,6 @@ # The LearningOnline Network with CAPA # - -# $Id: lonproblemanalysis.pm,v 1.37 2003/10/14 21:58:25 matthew Exp $ +# $Id: lonproblemanalysis.pm,v 1.42 2003/10/17 22:05:45 matthew Exp $ # # Copyright Michigan State University Board of Trustees # @@ -36,6 +35,12 @@ use Apache::loncoursedata(); use Apache::lonstatistics; use Apache::lonlocal; use HTML::Entities(); +use Time::Local(); + +my $plotcolors = ['#33ff00', + '#0033cc', '#990000', '#aaaa66', '#663399', '#ff9933', + '#66ccff', '#ff9999', '#cccc33', '#660000', '#33cc66', + ]; sub BuildProblemAnalysisPage { my ($r,$c)=@_; @@ -44,7 +49,8 @@ sub BuildProblemAnalysisPage { # my @Students = @Apache::lonstatistics::Students; # - if (exists($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); @@ -54,6 +60,7 @@ sub BuildProblemAnalysisPage { } else { $r->print(''); } + $r->rflush(); if (exists($ENV{'form.problemchoice'}) && ! exists($ENV{'form.SelectAnother'})) { $r->print(''."\n"; - $table .= ''. - ''.&mt('Concept Number').''. - ''.&mt('Concept').''. - ''.&mt('Foil Number').''. - ''.&mt('Foil Name').''. - ''.&mt('Foil Text').''. - ''.&mt('Correct Value').''. - "\n"; + if (@Concepts > 1) { + $table .= ''. + ''.&mt('Concept Number').''. + ''.&mt('Concept').''. + ''.&mt('Foil Number').''. + ''.&mt('Foil Name').''. + ''.&mt('Foil Text').''. + ''.&mt('Correct Value').''. + "\n"; + } else { + $table .= ''. + ''.&mt('Foil Number').''. + ''.&mt('Foil Name').''. + ''.&mt('Foil Text').''. + ''.&mt('Correct Value').''. + "\n"; + } my $conceptindex = 1; my $foilindex = 1; foreach my $concept (@Concepts) { my @FoilsInConcept = @{$concept->{'foils'}}; my $firstfoil = shift(@FoilsInConcept); - $table .= ''. - ''.$conceptindex.''. - ''.$concept->{'name'}.''. - ''.$foilindex++.''. - ''.$Foildata{$firstfoil}->{'name'}.''. - ''.$Foildata{$firstfoil}->{'text'}.''. - ''.$Foildata{$firstfoil}->{'value'}.''. - "\n"; - foreach my $foilid (@FoilsInConcept) { + if (@Concepts > 1) { + $table .= ''. + ''.$conceptindex.''. + ''.$concept->{'name'}.''. + ''.$foilindex++.''. + ''.$Foildata{$firstfoil}->{'name'}.''. + ''.$Foildata{$firstfoil}->{'text'}.''. + ''.$Foildata{$firstfoil}->{'value'}.''. + "\n"; + } else { $table .= ''. - ''. - ''. - ''.$foilindex.''. - ''.$Foildata{$foilid}->{'name'}.''. - ''.$Foildata{$foilid}->{'text'}.''. - ''.$Foildata{$foilid}->{'value'}.''. + ''.$foilindex++.''. + ''.$Foildata{$firstfoil}->{'name'}.''. + ''.$Foildata{$firstfoil}->{'text'}.''. + ''.$Foildata{$firstfoil}->{'value'}.''. "\n"; + } + foreach my $foilid (@FoilsInConcept) { + if (@Concepts > 1) { + $table .= ''. + ''. + ''. + ''.$foilindex.''. + ''.$Foildata{$foilid}->{'name'}.''. + ''.$Foildata{$foilid}->{'text'}.''. + ''.$Foildata{$foilid}->{'value'}.''. + "\n"; + } else { + $table .= ''. + ''.$foilindex.''. + ''.$Foildata{$foilid}->{'name'}.''. + ''.$Foildata{$foilid}->{'text'}.''. + ''.$Foildata{$foilid}->{'value'}.''. + "\n"; + } } continue { $foilindex++; } @@ -221,9 +256,29 @@ sub build_foil_index { $conceptindex++; } $table .= "\n"; + # + # Build option index with color stuff return ($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"; +} + ######################################################### ######################################################### ## @@ -235,67 +290,147 @@ sub tries_analysis { my ($PerformanceData,$ORdata) = @_; my $mintries = 1; my $maxtries = $ENV{'form.NumPlots'}; + my ($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; + $ENV{'form.AnalyzeAs'} = 'Foils'; + } my %ResponseData = &analyze_option_data_by_tries($PerformanceData, $mintries,$maxtries); - my ($table,$Foils,$Concepts) = &build_foil_index($ORdata); + 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; + 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'}); + } + 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 = $ResponseData{$foilid}->[$i]->{'correct'} / - $ResponseData{$foilid}->[$i]->{'total'}; + if ($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]->{'total'}}, - $ResponseData{$foilid}->[$i]->{'total'}); - push (@{$PlotData[$i]->{'good'}},100 * $percent); - push (@{$PlotData[$i]->{'bad'}}, 100 *(1-$percent)); } } - } 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; - } else { - $percent = $correct/$total; + } + # + # Build a table for the 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'}/$cdata->{'_total'}); } - push (@{$PlotData[$i]->{'good'}},100*$percent); - push (@{$PlotData[$i]->{'bad'}},100*(1-$percent)); - } } } - # # Build a table for the plots - $table .= "
\n"; - my @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; } @@ -303,38 +438,25 @@ 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 { @@ -344,30 +466,16 @@ sub analyze_option_data_by_tries { $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($row); + while (my ($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'} + - $tryhash->{'incorrect'}; } } return %Trydata; @@ -382,141 +490,242 @@ sub analyze_option_data_by_tries { ######################################################### sub time_analysis { my ($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 = $ENV{'form.plottitle_'.$i}; - } - ($plothtml,$starttime,$endtime,$data) = - &analyze_option_data_by_time($PerformanceData, - $begin_index,$end_index, - $plottitle, - @$Concepts); + 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); - $table.="\n"; + # + 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); + } } - $table .="
".$plothtml.''. - "Start Time:  ".$startdateform."
". - "End Time  : "." ".$enddateform."
". - 'Plot Title  :'. - '
'. - "
\n"; + # return $table; } -sub analyze_option_data_by_time { - my ($PerformanceData,$begin_index,$end_index,$description,@Concepts) = @_; +sub Foil_Time_Analysis { + my ($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'}++; - } else { - $TimeData{$foilid}->{'incorrect'}++; + 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; } } } - # - # Compute the total and percent correct - my @Plotdata1; - my @Plotdata2; - foreach my $concept (@Concepts) { - my ($correct,$incorrect,$total); - foreach my $foilid (@{$concept->{'foils'}}) { - if (! exists($TimeData{$foilid}->{'correct'})) { - $TimeData{$foilid}->{'correct'} = 0; - } - if (! exists($TimeData{$foilid}->{'incorrect'})) { - $incorrect = 0; - $TimeData{$foilid}->{'incorrect'} = 0; - } - $correct += $TimeData{$foilid}->{'correct'}; - $incorrect += $TimeData{$foilid}->{'incorrect'}; - $total += $TimeData{$foilid}->{'correct'}+ - $TimeData{$foilid}->{'incorrect'}; - $TimeData{$foilid}->{'total'} = $TimeData{$foilid}->{'correct'} + - $TimeData{$foilid}->{'incorrect'}; - my $percent; - if ($TimeData{$foilid}->{'total'} == 0) { - $percent = 0; - } else { - $percent = $TimeData{$foilid}->{'correct'} / - $TimeData{$foilid}->{'total'}; - } - $TimeData{$foilid}->{'percent_corr'} = 100 * $percent; - if ($ENV{'form.AnalyzeAs'} eq 'Foils') { - push (@Plotdata1, $TimeData{$foilid}->{'percent_corr'}); - push (@Plotdata2,100-$TimeData{$foilid}->{'percent_corr'}); - } + 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'} / $total); } - if ($ENV{'form.AnalyzeAs'} ne 'Foils') { - if ($total == 0) { - push (@Plotdata1,0); - push (@Plotdata2,100); + my $total_incorrect = $total - $TimeData{$foil}->{'_correct'}; + my $optionidx = 1; + foreach my $option (@{$ORdata->{'Options'}}) { + if ($total_incorrect == 0) { + push(@{$Plotdata[$optionidx]},0); } else { - push (@Plotdata1,100 * $correct / $total); - push (@Plotdata2,100 * (1-$correct / $total)); + push(@{$Plotdata[$optionidx]}, + 100 * $TimeData{$foil}->{$option} / $total_incorrect); } + } continue { + $optionidx++; } } # # Create the plot - my $xlabel; - if ($ENV{'form.AnalyzeAs'} eq 'Foils') { - $xlabel = 'Foil Number'; + my $count = $end_index-$begin_index; + my $title; + if ($count == 0) { + $title = 'no submissions'; + } elsif ($count == 1) { + $title = 'one submission'; } else { - $xlabel = 'Concept Number'; + $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); + $analysis_html.=''. + ''.$correctplot.''. + ''.$incorrectplot.''. + ''.$foilkey.''."\n"; + $analysis_html.= ''.''. + 'Start Time:'. + '  '.$interval->{'startdateform'}.'
'. + 'End Time  : '. + ' '.$interval->{'enddateform'}.'
'. +# 'Plot Title  :'. +# (" "x3).$interval->{'titleform'}. + ''. + "\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; + } + } } - my $graphlink = &Apache::loncommon::DrawGraph - ($description,#'Time Interval Analysis', - $xlabel, - 'Percent Correct / Incorrect', - 100, - \@Plotdata1,\@Plotdata2); # - return ($graphlink,$starttime,$endtime,\%TimeData); + # 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 ($total == 0) { + push(@Plotdata,0); + } else { + push(@Plotdata,100 * $correct / $total); + } + } + # + # Create the plot + my $title = ($end_index - $begin_index).' submissions'; + my $correctplot = &Apache::loncommon::DrawGraph($title, + 'Concept Number', + 'Percent Correct', + 100, + $plotcolors, + \@Plotdata); + $analysis_html.=''. + ''.$correctplot.''. + ''. + 'Start Time:  '.$interval->{'startdateform'}.'
'. + 'End Time  : '. + ' '.$interval->{'enddateform'}.'
'. +# 'Plot Title  :'.(" "x3). +# $interval->{'titleform'}. + ''. + "\n"; + return $analysis_html; +} + +######################################################### +######################################################### +## +## Excel output +## +######################################################### +######################################################### +sub prepare_excel_sheet { + my ($PerformanceData,$ORdata) = @_; + my (undef,$Foils,$Concepts) = &build_foil_index($ORdata); +} + +sub process_data_for_excel_sheet { + my ($PerformanceData,$Foils,$Concepts,$ORdata)=@_; } ######################################################### @@ -618,7 +827,7 @@ sub CreateInterface { ## $Str .= ''."\n"; $Str .= ''."\n"; - return ($Str); + return $Str; } sub OptionResponseProblemSelector { @@ -690,6 +899,53 @@ sub get_resource_from_symb { return undef; } +sub get_time_from_row { + my ($row) = @_; + if (ref($row)) { + return $row->[3]; + } + return undef; +} + +sub get_tries_from_row { + my ($row) = @_; + if (ref($row)) { + return $row->[4]; + } + return undef; +} + +sub Process_Row { + my ($row) = @_; + my %RowData; + my ($award,$grading,$submission,$time,$tries) = @$row; + next 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); + $submission =~ s/\%20/ /g; + $RowData{$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 $Answ=&Apache::lonnet::ssi($url,('grade_target' => 'analyze')); @@ -714,8 +970,6 @@ sub get_problem_data { } } } else { - $value =~ s/^\s*//g; - $value =~ s/\s*$//g; if ($key=~ /^foil\.text\.(.*)$/) { my $foil = $1; $Partdata{$part}->{'Foils'}->{$foil}->{'name'}=$foil;