'.
''.
$rendered_problem.
@@ -77,14 +109,14 @@ sub BuildProblemAnalysisPage {
(\@Students,$symb,$resid);
if (defined($PerformanceData) &&
ref($PerformanceData) eq 'ARRAY') {
- if ($ENV{'form.AnalyzeBy'} eq 'Tries') {
- my $analysis_html = &DoTriesAnalysis($PerformanceData,
+ 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);
-# } elsif ($ENV{'form.AnalyzeBy'} eq 'Time') {
-# my $analysis_html = &DoTimeAnalysis($PerformanceData,
-# $ORdata);
-# $r->print($analysis_html);
} else {
$r->print(''.
&mt('The analysis you have selected is '.
@@ -101,113 +133,272 @@ sub BuildProblemAnalysisPage {
}
$r->print(' ');
} else {
+ $r->print('');
+ $r->print(' 'x5);
$r->print(''.&mt('Please select a problem to analyze').'');
+ $r->print(&OptionResponseProblemSelector());
}
- # Okay, they asked for data, so make sure we get the latest data.
- $r->print(&OptionResponseProblemSelector());
}
-sub DoTriesAnalysis {
- my ($PerformanceData,$ORdata) = @_;
- my $mintries = 1;
- my $maxtries = 10;
- my %ResponseData = &analyze_option_data_by_tries($PerformanceData,
- $mintries,$maxtries);
- my @Foils = sort(keys(%ResponseData));
- my %Row_Label;
+#########################################################
+#########################################################
+##
+## Misc interface routines use by analysis code
+##
+#########################################################
+#########################################################
+sub build_foil_index {
+ my ($ORdata) = @_;
+ return if (! exists($ORdata->{'Foils'}));
+ my %Foildata = %{$ORdata->{'Foils'}};
+ my @Foils = sort(keys(%Foildata));
+ my %Concepts;
foreach my $foilid (@Foils) {
- my $value = $ORdata->{'Foiltext'}->{$foilid};
-# &Apache::lonnet::logthis('row label '.$foilid.' = '.$value);
- $Row_Label{$foilid} = $ORdata->{'Foiltext'}->{$foilid};
+ push(@{$Concepts{$Foildata{$foilid}->{'Concept'}}},
+ $foilid);
}
- my @Rows;
- $Rows[0] = [' | '];
- for (my $i=$mintries;$i<=$maxtries;$i++) {
- push (@{$Rows[0]},
- ''.&mt('Attempt').' '.$i.' | ');
+ undef(@Foils);
+ # Having gathered the concept information in a hash, we now translate it
+ # into an array because we need to be consistent about order.
+ # Also put the foils in order, too.
+ my $sortfunction = sub {
+ my %Numbers = (one => 1,
+ two => 2,
+ three => 3,
+ four => 4,
+ five => 5,
+ six => 6,
+ seven => 7,
+ eight => 8,
+ nine => 9,
+ ten => 10,);
+ my $a1 = $a;
+ my $b1 = $b;
+ if (exists($Numbers{lc($a)})) {
+ $a1 = $Numbers{lc($a)};
+ }
+ if (exists($Numbers{lc($b)})) {
+ $b1 = $Numbers{lc($b)};
+ }
+ $a1 cmp $b1;
+ };
+ my @Concepts;
+ foreach my $concept (sort $sortfunction (keys(%Concepts))) {
+ push(@Concepts,{ name => $concept,
+ foils => [@{$Concepts{$concept}}]});
+ push(@Foils,(@{$Concepts{$concept}}));
}
- $Rows[1] = [''.&mt('Foil').' | '];
- for (my $i=$mintries;$i<=$maxtries;$i++) {
- push (@{$Rows[1]},(''.&mt('Correct').' | ',
- ''.&mt('Incorrect').' | ',
- ''.&mt('Percent Correct').' | ',
- ));
- }
- my @PlotData;
- my @CumulativePlotData;
- my $index = 1;
- foreach my $foilid (@Foils) {
- my @Data = (''.$index.' '.$Row_Label{$foilid}.' | ');
- for (my $i=$mintries;$i<=$maxtries;$i++) {
- push(@Data,
- (''.$ResponseData{$foilid}->[$i]->{'correct'}.' | ',
- ''.$ResponseData{$foilid}->[$i]->{'incorrect'}.
- ' | ',
- ''.
- sprintf("%4.2f",
- $ResponseData{$foilid}->[$i]->{'percent_corr'}).
- ' | '));
- #
- # Gather the per-attempt data
- push (@{$PlotData[$i]->{'good'}},
- $ResponseData{$foilid}->[$i]->{'percent_corr'});
- push (@{$PlotData[$i]->{'bad'}},
- 100-$ResponseData{$foilid}->[$i]->{'percent_corr'});
- }
- for (my $i=0;$i<=$maxtries;$i++) {
- push (@{$CumulativePlotData[$i]->{'good'}},
- $CumulativePlotData[-1]->{'good'}+
- $ResponseData{$foilid}->[$i]->{'correct'});
- push (@{$CumulativePlotData[$i]->{'bad'}},
- $CumulativePlotData[-1]->{'bad'}+
- $ResponseData{$foilid}->[$i]->{'incorrect'});
+ #
+ # Build up the table of row labels.
+ my $table = ''."\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);
+ if (@Concepts > 1) {
+ $table .= ''.
+ ''.$conceptindex.' | '.
+ ''.$concept->{'name'}.' | '.
+ ''.$foilindex++.' | '.
+ ''.$Foildata{$firstfoil}->{'name'}.' | '.
+ ''.$Foildata{$firstfoil}->{'text'}.' | '.
+ ''.$Foildata{$firstfoil}->{'value'}.' | '.
+ " \n";
+ } else {
+ $table .= ''.
+ ''.$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++;
}
- push(@Rows,\@Data);
} continue {
- $index++;
+ $conceptindex++;
}
- my @Data = (' | ');
+ $table .= " \n";
+ #
+ # Build option index with color stuff
+ return ($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,
+ ''.
+ ''.
+ (' 'x4).' | '.
+ ''.$option.' | '.
+ " \n");
+ }
+ $table .= join('',reverse(@Rows));
+ $table .= " \n";
+}
+
+#########################################################
+#########################################################
+##
+## Tries Analysis
+##
+#########################################################
+#########################################################
+sub tries_analysis {
+ my ($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);
+ #
+ # Compute the data neccessary to make the plots
+ my @PlotData; # Array which holds the data for each plot
+ # @{$PlotData[$try]->{'datasetname'}} holds the data for
+ # try $try with respect to 'datasetname'. The array is
+ # filled either with per-foil or per-concept data.
+ my ($extrakey,$xlabel,$ylabel);
+ if ($ENV{'form.AnalyzeAs'} eq 'Foils') {
+ $extrakey = &build_option_index($ORdata);
+ $xlabel = 'Foil Number';
+ $ylabel = 'Percent Choosing Option';
+ foreach my $foilid (@$Foils) {
+ for (my $i=$mintries;$i<=$maxtries;$i++) {
+ foreach my $option ('_correct',@{$ORdata->{'Options'}}) {
+ push(@{$PlotData[$i]->{'_total'}},
+ $ResponseData{$foilid}->[$i]->{'_total'});
+ if ($ResponseData{$foilid}->[$i]->{'_total'} == 0) {
+ push (@{$PlotData[$i]->{$option}},0);
+ } else {
+ push (@{$PlotData[$i]->{$option}},
+ 100 * $ResponseData{$foilid}->[$i]->{$option} /
+ $ResponseData{$foilid}->[$i]->{'_total'});
+ }
+ }
+ }
+ }
+ } else {
+ # 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.
+ $extrakey = '';
+ $xlabel = 'Concept Number';
+ $ylabel = 'Percent Correct';
+ 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'});
+ }
+ }
+ }
+ } # End of work to fill @PlotData
+ #
+ # Build a table for the plots
+ $table .= "\n";
+ my @Plots;
for (my $i=$mintries;$i<=$maxtries;$i++) {
- my $minstu = $ResponseData{$Foils[0]}->[$i]->{'total'};
- my $maxstu = $ResponseData{$Foils[0]}->[$i]->{'total'};
- foreach my $foilid (@Foils) {
- if ($minstu > $ResponseData{$foilid}->[$i]->{'total'}) {
- $minstu = $ResponseData{$foilid}->[$i]->{'total'};
- }
- if ($maxstu < $ResponseData{$foilid}->[$i]->{'total'}) {
- $maxstu = $ResponseData{$foilid}->[$i]->{'total'};
+ my $minstu = $PlotData[$i]->{'_total'}->[0];
+ my $maxstu = $PlotData[$i]->{'_total'}->[0];
+ foreach my $count (@{$PlotData[$i]->{'_total'}}) {
+ if ($minstu > $count) {
+ $minstu = $count;
+ }
+ if ($maxstu < $count) {
+ $maxstu = $count;
}
}
- $maxstu = 0 if (! $maxstu);
- $minstu = 0 if (! $minstu);
- my $graphlink;
+ $maxstu = 0 if (! defined($maxstu));
+ $minstu = 0 if (! defined($minstu));
+ my $title;
if ($maxstu == $minstu) {
- $graphlink = &Apache::loncommon::DrawGraph
- ('Attempt '.$i.', '.$maxstu.' students',
- 'Foil Number',
- 'Percent Correct',
- 100,
- $PlotData[$i]->{'good'},
- $PlotData[$i]->{'bad'});
+ $title = 'Attempt '.$i.', '.$maxstu.' students';
} else {
- $graphlink = &Apache::loncommon::DrawGraph
- ('Attempt '.$i.', '.$minstu.'-'.$maxstu.
- ' students',
- 'Foil Number',
- 'Percent Correct',
- 100,
- $PlotData[$i]->{'good'},
- $PlotData[$i]->{'bad'});
+ $title = 'Attempt '.$i.', '.$minstu.'-'.$maxstu.' students';
}
- push(@Data,''.$graphlink.' | ');
+ my @Datasets;
+ foreach my $option ('_correct',@{$ORdata->{'Options'}}) {
+ next if (! exists($PlotData[$i]->{$option}));
+ push(@Datasets,$PlotData[$i]->{$option});
+ }
+ my $graphlink = &Apache::loncommon::DrawGraph($title,
+ $xlabel,
+ $ylabel,
+ 100,
+ $plotcolors,
+ @Datasets);
+ push(@Plots,$graphlink);
}
- push (@Rows,\@Data);
- my $table = ''."\n";
- for (my $i=0; $i <=$#Rows;$i++) {
- $table .= ''.join('',@{$Rows[$i]})." \n";
+ #
+ # Should this be something the user can set? Too many dialogs!
+ while (my $plotlink = shift(@Plots)) {
+ $table .= ''.$plotlink.' | '.$extrakey." | \n";
}
- $table .= ' ';
+ $table .= " \n";
return ($table);
}
@@ -219,49 +410,186 @@ sub analyze_option_data_by_tries {
foreach my $row (@$PerformanceData) {
next if (! defined($row));
my ($grading,$submission,$time,$tries) = @$row;
+ next if ($grading eq 'MISSING_ANSWER');
my @Foilgrades = split('&',$grading);
my @Foilsubs = split('&',$submission);
for (my $numtries = 1; $numtries <= $maxtries; $numtries++) {
if ($tries == $numtries) {
- foreach my $foilgrade (@Foilgrades) {
- my ($foilid,$correct) = split('=',$foilgrade);
+ for (my $i=0;$i<=$#Foilgrades;$i++) {
+ my ($foilid,$correct) = split('=',$Foilgrades[$i]);
+ my (undef,$submission) = split('=',$Foilsubs[$i]);
+ $submission = &Apache::lonnet::unescape($submission);
if ($correct) {
- $Trydata{$foilid}->[$numtries]->{'correct'}++;
+ $Trydata{$foilid}->[$numtries]->{'_correct'}++;
} else {
- $Trydata{$foilid}->[$numtries]->{'incorrect'}++;
+ $Trydata{$foilid}->[$numtries]->{$submission}++;
}
+ $Trydata{$foilid}->[$numtries]->{'_total'}++;
}
}
}
}
- 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'};
- $tryhash->{'percent_corr'} = 100 *
- ($tryhash->{'correct'} /
- ($tryhash->{'correct'} + $tryhash->{'incorrect'})
- );
+ return %Trydata;
+}
+
+#########################################################
+#########################################################
+##
+## Time Analysis
+##
+#########################################################
+#########################################################
+sub time_analysis {
+ my ($PerformanceData,$ORdata) = @_;
+ my $num_plots = $ENV{'form.NumPlots'};
+ my ($table,$Foils,$Concepts) = &build_foil_index($ORdata);
+ my $num_data = scalar(@$PerformanceData)-1;
+ my $percent = sprintf('%2f',100/$num_plots);
+ my $extratable = '';
+ if ($ENV{'form.AnalyzeAs'} eq 'Foils') {
+ $extratable = &build_option_index($ORdata);
+ }
+ $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,
+ $plottitle,$Foils,
+ $Concepts,$ORdata);
+ my $startdateform = &Apache::lonhtmlcommon::date_setter
+ ('Statistics','startdate_'.$i,$starttime);
+ my $enddateform = &Apache::lonhtmlcommon::date_setter
+ ('Statistics','enddate_'.$i,$endtime);
+ $table.="".$plothtml.' | '.
+ "Start Time: ".$startdateform." ".
+ "End Time : "." ".$enddateform." ".
+ 'Plot Title :'.(" "x3).
+ ' '.$extratable.
+ " | \n";
}
- return %Trydata;
+ $table .=" \n";
+ return $table;
}
-sub get_problem_symb {
- my $problemstring = shift();
- my ($symb,$partid,$resid) = ($problemstring=~ /^(.*):([^:]*):([^:]*)$/);
- return ($symb,$partid,$resid);
+sub analyze_option_data_by_time {
+ my ($PerformanceData,$begin_index,
+ $end_index,$description,$Foils,$Concepts,$ORdata) = @_;
+ 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];
+ next if (! defined($row));
+ my ($grading,$submission,$time,$tries) = @$row;
+ next if ($grading eq 'MISSING_ANSWER');
+ my @Foilgrades = split('&',$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) {
+ $TimeData{$foilid}->{'_correct'}++;
+ } else {
+ $submission = &HTML::Entities::decode($submission);
+ $submission =~ s/\%20/ /g;
+ $TimeData{$foilid}->{$submission}++;
+ }
+ $TimeData{$foilid}->{'_total'}++;
+ }
+ }
+ #
+ # Compute the total and percent correct
+ my @Plotdata;
+ my ($xlabel,$ylabel);
+ if ($ENV{'form.AnalyzeAs'} eq 'Foils') {
+ $xlabel = 'Foil Number';
+ $ylabel = 'Option Chosen';
+ foreach my $foil (@$Foils) {
+ my $total = $TimeData{$foil}->{'_total'};
+ my $optionidx = 0;
+ foreach my $option ('_correct',@{$ORdata->{'Options'}}) {
+ if ($total > 0) {
+ push(@{$Plotdata[$optionidx]},
+ 100 * $TimeData{$foil}->{$option} / $total);
+ } else {
+ push(@{$Plotdata[$optionidx]},0);
+ }
+ } continue {
+ $optionidx++;
+ }
+ }
+ } else {
+ $xlabel = 'Concept Number';
+ $ylabel = 'Percent Correct';
+ foreach my $concept (@$Concepts) {
+ my $correct;
+ my $total;
+ foreach my $foil (@{$concept->{'foils'}}) {
+ $correct+=$TimeData{$foil}->{'_correct'};
+ $total +=$TimeData{$foil}->{'_total'};
+ }
+ if ($total > 0) {
+ push(@{$Plotdata[0]},100 * $correct / $total);
+ } else {
+ push(@{$Plotdata[0]},0);
+ }
+ }
+ }
+ #
+ # Create the plot
+ my $graphlink = &Apache::loncommon::DrawGraph
+ ($description,#'Time Interval Analysis',
+ $xlabel,
+ $ylabel,
+ 100,
+ $plotcolors,
+ @Plotdata);
+ #
+ return ($graphlink,$starttime,$endtime,\%TimeData);
}
+#########################################################
+#########################################################
+##
+## Interface
+##
+#########################################################
+#########################################################
sub CreateInterface {
##
## Environment variable initialization
- if (! exists$ENV{'form.AnalyzeBy'}) {
- $ENV{'form.AnalyzeBy'} = 'Tries';
+ if (! exists$ENV{'form.AnalyzeOver'}) {
+ $ENV{'form.AnalyzeOver'} = 'Tries';
}
##
## Build the menu
@@ -270,10 +598,11 @@ sub CreateInterface {
$Str .= ' |
'."\n";
$Str .= &Apache::lonstatistics::SectionSelect('Section','multiple',5);
$Str .= ' | ';
@@ -282,7 +611,7 @@ sub CreateInterface {
$Str .= &Apache::lonhtmlcommon::StatusOptions(undef,undef,5);
$Str .= '';
#
- $Str .= '';
+# $Str .= ' | ';
my $only_seq_with_assessments = sub {
my $s=shift;
if ($s->{'num_assess'} < 1) {
@@ -291,31 +620,63 @@ sub CreateInterface {
return 1;
}
};
- $Str .= &Apache::lonstatistics::MapSelect('Maps','multiple,all',5,
+ &Apache::lonstatistics::MapSelect('Maps','multiple,all',5,
$only_seq_with_assessments);
- $Str .= ' | ';
- #
+ ##
+ ##
$Str .= '';
- $Str .='';
- $Str .='';
+ $Str .= ' | ';
- #
+ ##
+ ##
$Str .= '
'."\n";
$Str .= '