version 1.44, 2003/03/26 17:03:41
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version 1.61, 2003/11/11 22:14:28
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Line 26
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# |
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# (Navigate problems for statistical reports |
# (Navigate problems for statistical reports |
# |
# |
### |
############################################### |
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############################################### |
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=pod |
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=head1 NAME |
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lonproblemstatistics |
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=head1 SYNOPSIS |
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Routines to present problem statistics to instructors via tables, |
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Excel files, and plots. |
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=over 4 |
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=cut |
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############################################### |
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############################################### |
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package Apache::lonproblemstatistics; |
package Apache::lonproblemstatistics; |
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Line 35 use Apache::lonnet();
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Line 54 use Apache::lonnet();
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use Apache::lonhtmlcommon; |
use Apache::lonhtmlcommon; |
use Apache::loncoursedata; |
use Apache::loncoursedata; |
use Apache::lonstatistics; |
use Apache::lonstatistics; |
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use Apache::lonlocal; |
use Spreadsheet::WriteExcel; |
use Spreadsheet::WriteExcel; |
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####################################################### |
## |
####################################################### |
## Localization notes: |
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## |
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## in @Fields[0]->{'long_title'} is placed in Excel files and is used as the |
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## header for plots created with Graph.pm, both of which more than likely do |
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## not support localization. |
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## |
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my @Fields = ( |
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{ name => 'problem_num', |
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title => 'P#', |
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align => 'right', |
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color => '#FFFFE6' }, |
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{ name => 'container', |
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title => 'Sequence or Folder', |
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align => 'left', |
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color => '#FFFFE6', |
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sortable => 'yes' }, |
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{ name => 'title', |
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title => 'Title', |
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align => 'left', |
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color => '#FFFFE6', |
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special => 'link', |
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sortable => 'yes', }, |
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{ name => 'part', |
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title => 'Part', |
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align => 'left', |
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color => '#FFFFE6', |
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}, |
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{ name => 'num_students', |
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title => '#Stdnts', |
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align => 'right', |
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color => '#EEFFCC', |
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format => '%d', |
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sortable => 'yes', |
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graphable => 'yes', |
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long_title => 'Number of Students Attempting Problem' }, |
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{ name => 'tries', |
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title => 'Tries', |
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align => 'right', |
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color => '#EEFFCC', |
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format => '%d', |
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sortable => 'yes', |
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graphable => 'yes', |
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long_title => 'Total Number of Tries' }, |
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{ name => 'max_tries', |
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title => 'Max Tries', |
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align => 'right', |
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color => '#DDFFFF', |
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format => '%d', |
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sortable => 'yes', |
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graphable => 'yes', |
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long_title => 'Maximum Number of Tries' }, |
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{ name => 'mean_tries', |
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title => 'Mean Tries', |
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align => 'right', |
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color => '#DDFFFF', |
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format => '%5.2f', |
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sortable => 'yes', |
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graphable => 'yes', |
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long_title => 'Average Number of Tries' }, |
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{ name => 'std_tries', |
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title => 'S.D. tries', |
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align => 'right', |
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color => '#DDFFFF', |
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format => '%5.2f', |
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sortable => 'yes', |
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graphable => 'yes', |
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long_title => 'Standard Deviation of Number of Tries' }, |
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{ name => 'skew_tries', |
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title => 'Skew Tries', |
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align => 'right', |
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color => '#DDFFFF', |
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format => '%5.2f', |
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sortable => 'yes', |
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graphable => 'yes', |
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long_title => 'Skew of Number of Tries' }, |
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{ name => 'deg_of_diff', |
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title => 'DoDiff', |
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align => 'right', |
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color => '#DDFFFF', |
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format => '%5.2f', |
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sortable => 'yes', |
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graphable => 'yes', |
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long_title => 'Degree of Difficulty'. |
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'[ 1 - ((#YES+#yes) / Tries) ]'}, |
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{ name => 'num_solved', |
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title => '#YES', |
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align => 'right', |
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color => '#FFDDDD', |
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format => '%d', |
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sortable => 'yes', |
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graphable => 'yes', |
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long_title => 'Number of Students able to Solve' }, |
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{ name => 'num_override', |
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title => '#yes', |
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align => 'right', |
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color => '#FFDDDD', |
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format => '%d', |
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sortable => 'yes', |
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graphable => 'yes', |
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long_title => 'Number of Students given Override' }, |
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{ name => 'per_wrong', |
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title => '%Wrng', |
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align => 'right', |
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color => '#FFFFE6', |
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format => '%4.1f', |
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sortable => 'yes', |
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graphable => 'yes', |
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long_title => 'Percent of students whose final answer is wrong' }, |
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); |
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sub CreateInterface { |
############################################### |
my $Str = ''; |
############################################### |
$Str .= '<table cellspacing="5">'."\n"; |
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$Str .= '<tr>'; |
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$Str .= '<td align="center"><b>Sections</b></td>'; |
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$Str .= '<td align="center"><b>Sequences and Folders</b></td>'; |
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$Str .= '<td align="center"><b>Output</b></td>'; |
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$Str .= '</tr>'."\n"; |
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# |
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$Str .= '<tr><td align="center">'."\n"; |
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$Str .= &Apache::lonstatistics::SectionSelect('Section','multiple',5); |
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$Str .= '</td><td align="center">'; |
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# |
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my $only_seq_with_assessments = sub { |
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my $s=shift; |
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if ($s->{'num_assess'} < 1) { |
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return 0; |
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} else { |
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return 1; |
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} |
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}; |
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$Str .= &Apache::lonstatistics::MapSelect('Maps','multiple,all',5, |
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$only_seq_with_assessments); |
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$Str .= '</td><td>'."\n"; |
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$Str .= &CreateAndParseOutputSelector(); |
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$Str .= '</td></tr>'."\n"; |
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$Str .= '</table>'."\n"; |
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return $Str; |
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} |
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####################################################### |
=pod |
####################################################### |
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=pod |
=item &CreateInterface() |
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=item &CreateAndParseOutputSelector() |
Create the main intereface for the statistics page. Allows the user to |
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select sections, maps, and output. |
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=cut |
=cut |
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####################################################### |
############################################### |
####################################################### |
############################################### |
my $output_mode; |
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my $show; |
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my @OutputOptions = |
my @OutputOptions = |
( |
( |
{ name => 'problem statistics grouped by sequence', |
{ name => 'problem statistics grouped by sequence', |
Line 105 my @OutputOptions =
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Line 203 my @OutputOptions =
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mode => 'excel', |
mode => 'excel', |
show => 'all', |
show => 'all', |
}, |
}, |
{ name => 'Degree of Difficulty Plot', |
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value => 'plot deg diff', |
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description => 'Generate a plot of the degree of difficulty of each '. |
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'problem part.', |
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mode => 'plot', |
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show => 'deg of diff', |
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}, |
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{ name => 'Percent Wrong Plot', |
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value => 'plot per wrong', |
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description => 'Generate a plot showing the percent of students who '. |
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'were unable to complete each problem part', |
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mode => 'plot', |
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show => 'per wrong', |
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}, |
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); |
); |
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sub OutputDescriptions { |
sub CreateInterface { |
my $Str = ''; |
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$Str .= "<h2>Output Modes</h2>\n"; |
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$Str .= "<dl>\n"; |
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foreach my $outputmode (@OutputOptions) { |
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$Str .=" <dt>".$outputmode->{'name'}."</dt>\n"; |
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$Str .=" <dd>".$outputmode->{'description'}."</dd>\n"; |
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} |
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$Str .= "</dl>\n"; |
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return $Str; |
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} |
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sub CreateAndParseOutputSelector { |
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my $Str = ''; |
my $Str = ''; |
my $elementname = 'outputmode'; |
$Str .= '<table cellspacing="5">'."\n"; |
# |
$Str .= '<tr>'; |
# Format for output options is 'mode, restrictions'; |
$Str .= '<td align="center"><b>'.&mt('Sections').'</b></td>'; |
my $selected = 'html, with links'; |
$Str .= '<td align="center"><b>'.&mt('Enrollment Status').'</b></td>'; |
if (exists($ENV{'form.'.$elementname})) { |
$Str .= '<td align="center"><b>'.&mt('Sequences and Folders').'</b></td>'; |
if (ref($ENV{'form.'.$elementname} eq 'ARRAY')) { |
$Str .= '<td align="center"><b>'.&mt('Output').'</b></td>'; |
$selected = $ENV{'form.'.$elementname}->[0]; |
$Str .= '</tr>'."\n"; |
} else { |
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$selected = $ENV{'form.'.$elementname}; |
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} |
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} |
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# |
# |
# Set package variables describing output mode |
$Str .= '<tr><td align="center">'."\n"; |
$output_mode = 'html'; |
$Str .= &Apache::lonstatistics::SectionSelect('Section','multiple',5); |
$show = 'all'; |
$Str .= '</td><td align="center">'; |
foreach my $option (@OutputOptions) { |
$Str .= &Apache::lonhtmlcommon::StatusOptions(undef,undef,5); |
next if ($option->{'value'} ne $selected); |
$Str .= '</td><td align="center">'; |
$output_mode = $option->{'mode'}; |
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$show = $option->{'show'}; |
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} |
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# |
# |
# Build the form element |
my $only_seq_with_assessments = sub { |
$Str = qq/<select size="5" name="$elementname">/; |
my $s=shift; |
foreach my $option (@OutputOptions) { |
if ($s->{'num_assess'} < 1) { |
$Str .= "\n".' <option value="'.$option->{'value'}.'"'; |
return 0; |
$Str .= " selected " if ($option->{'value'} eq $selected); |
} else { |
$Str .= ">".$option->{'name'}."<\/option>"; |
return 1; |
} |
} |
$Str .= "\n</select>"; |
}; |
return $Str; |
$Str .= &Apache::lonstatistics::MapSelect('Maps','multiple,all',5, |
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$only_seq_with_assessments); |
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$Str .= '</td><td>'."\n"; |
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my ($html,$outputmode,$show) = |
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&Apache::lonstatistics::CreateAndParseOutputSelector( |
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'statsoutputmode', |
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'HTML problem statistics grouped', |
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@OutputOptions); |
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$Str .= $html; |
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$Str .= '</td></tr>'."\n"; |
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$Str .= '</table>'."\n"; |
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$Str .= '<input type="submit" name="GenerateStatistics" value="'. |
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&mt('Generate Statistics').'" />'; |
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$Str .= ' 'x5; |
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$Str .= '<input type="submit" name="ClearCache" value="'. |
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&mt('Clear Caches').'" />'; |
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$Str .= ' 'x5; |
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return ($Str,$outputmode,$show); |
} |
} |
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############################################### |
############################################### |
############################################### |
############################################### |
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############################################### |
=pod |
############################################### |
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sub Gather_Student_Data { |
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my ($r) = @_; |
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my $c = $r->connection(); |
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# |
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my @Sequences = &Apache::lonstatistics::Sequences_with_Assess(); |
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# |
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my @Students = @Apache::lonstatistics::Students; |
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# |
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# Open the progress window |
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my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin |
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($r,'Statistics Compilation Status', |
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'Statistics Compilation Progress', scalar(@Students)); |
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# |
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while (my $student = shift @Students) { |
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return if ($c->aborted()); |
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my ($status,undef) = &Apache::loncoursedata::ensure_current_data |
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($student->{'username'},$student->{'domain'}, |
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$ENV{'request.course.id'}); |
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&Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state, |
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'last student'); |
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} |
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&Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state); |
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$r->rflush(); |
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} |
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############################################### |
=item &BuildProblemStatisticsPage() |
############################################### |
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Main interface to problem statistics. |
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=cut |
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############################################### |
############################################### |
############################################### |
############################################### |
sub BuildProblemStatisticsPage { |
sub BuildProblemStatisticsPage { |
my ($r,$c)=@_; |
my ($r,$c)=@_; |
# |
# |
$output_mode = 'html'; |
my %Saveable_Parameters = ('Status' => 'scalar', |
$show = 'grouped'; |
'statsoutputmode' => 'scalar', |
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'Section' => 'array', |
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'StudentData' => 'array', |
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'Maps' => 'array'); |
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&Apache::loncommon::store_course_settings('statistics', |
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\%Saveable_Parameters); |
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&Apache::loncommon::restore_course_settings('statistics', |
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\%Saveable_Parameters); |
# |
# |
$r->print(&CreateInterface()); |
&Apache::lonstatistics::PrepareClasslist(); |
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# |
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my ($interface,$output_mode,$show) = &CreateInterface(); |
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$r->print($interface); |
$r->print('<input type="hidden" name="statsfirstcall" value="no" />'); |
$r->print('<input type="hidden" name="statsfirstcall" value="no" />'); |
$r->print('<input type="hidden" name="sortby" value="'.$ENV{'form.sortby'}. |
$r->print('<input type="hidden" name="sortby" value="'.$ENV{'form.sortby'}. |
'" />'); |
'" />'); |
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$r->print('<input type="hidden" name="plot" value="" />'); |
if (! exists($ENV{'form.statsfirstcall'})) { |
if (! exists($ENV{'form.statsfirstcall'})) { |
return; |
return; |
} |
} |
# |
# |
&Gather_Student_Data($r); |
&Apache::lonstatistics::Gather_Student_Data($r); |
# |
# |
# |
# |
if ($output_mode eq 'html') { |
if ($output_mode eq 'html') { |
Line 231 sub BuildProblemStatisticsPage {
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Line 302 sub BuildProblemStatisticsPage {
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&output_html_ungrouped($r); |
&output_html_ungrouped($r); |
} |
} |
} elsif ($output_mode eq 'excel') { |
} elsif ($output_mode eq 'excel') { |
$r->print("<h2>Preparing Excel Spreadsheet</h2>"); |
$r->print('<h2>'.&mt('Preparing Excel Spreadsheet').'</h2>'); |
&output_excel($r); |
&output_excel($r); |
} else { |
} else { |
$r->print("<h1>Not implemented</h1>"); |
$r->print('<h1>'.&mt('Not implemented').'</h1>'); |
} |
} |
return; |
return; |
} |
} |
Line 242 sub BuildProblemStatisticsPage {
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Line 313 sub BuildProblemStatisticsPage {
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############################################### |
############################################### |
############################################### |
############################################### |
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=pod |
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=item &output_html_grouped_by_sequence() |
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Presents the statistics data as an html table organized by the order |
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the assessments appear in the course. |
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=cut |
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############################################### |
############################################### |
############################################### |
############################################### |
sub output_html_grouped_by_sequence { |
sub output_html_grouped_by_sequence { |
my ($r) = @_; |
my ($r) = @_; |
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my $problem_num = 0; |
#$r->print(&ProblemStatisticsLegend()); |
#$r->print(&ProblemStatisticsLegend()); |
my @Header = ("Title","Part","#Stdnts","Tries","Mod", |
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"Mean","#YES","#yes","%Wrng","DoDiff", |
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"S.D.","Skew.");#,"D.F.1st","D.F.2nd"); |
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# #FFFFE6 #EEFFCC #DDFFFF FFDDDD #DDFFDD #FFDDFF |
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foreach my $sequence (&Apache::lonstatistics::Sequences_with_Assess()) { |
foreach my $sequence (&Apache::lonstatistics::Sequences_with_Assess()) { |
my $show_part = 0; |
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next if ($sequence->{'num_assess'}<1); |
next if ($sequence->{'num_assess'}<1); |
$r->print("<h3>".$sequence->{'title'}."</h3>"); |
$r->print("<h3>".$sequence->{'title'}."</h3>"); |
$r->print('<table border="0"><tr><td bgcolor="#777777">'."\n"); |
$r->print('<table border="0"><tr><td bgcolor="#777777">'."\n"); |
$r->print('<table border="0" cellpadding="3">'."\n"); |
$r->print('<table border="0" cellpadding="3">'."\n"); |
$r->print('<tr bgcolor="#FFFFE6"><th>'. |
$r->print('<tr bgcolor="#FFFFE6">'); |
join("</th><th>",@Header)."</th></tr>\n"); |
my $Str = &statistics_table_header('no container no plots'); |
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$r->print('<tr bgcolor="#FFFFE6">'.$Str."</tr>\n"); |
foreach my $resource (@{$sequence->{'contents'}}) { |
foreach my $resource (@{$sequence->{'contents'}}) { |
next if ($resource->{'type'} ne 'assessment'); |
next if ($resource->{'type'} ne 'assessment'); |
foreach my $part (@{$resource->{'parts'}}) { |
foreach my $part (@{$resource->{'parts'}}) { |
my ($num,$tries,$mod,$mean,$Solved,$solved,$DegOfDiff,$STD, |
$problem_num++; |
$SKEW) = &Apache::loncoursedata::get_problem_statistics |
my $data = &get_statistics($sequence,$resource,$part, |
(undef,$resource->{'symb'},$part, |
$problem_num); |
$ENV{'request.course.id'}); |
my $option = ''; |
# |
$r->print('<tr>'.&statistics_html_table_data($data, |
$show_part = 1 if ($part ne '0'); |
'no container'). |
$part = ' ' if ($part == 0); |
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# |
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my $wrongpercent = 0; |
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if (defined($num) && $num > 0) { |
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$wrongpercent=int(10*100*($num-$Solved+$solved)/$num)/10; |
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} |
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$r->print('<tr>'.&statistics_html_table_data |
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($resource,$part,$num,$tries,$mod,$mean,$Solved, |
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$solved,$wrongpercent,$DegOfDiff,$STD,$SKEW, |
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$show_part). |
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"</tr>\n"); |
"</tr>\n"); |
} |
} |
} |
} |
Line 292 sub output_html_grouped_by_sequence {
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Line 359 sub output_html_grouped_by_sequence {
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############################################### |
############################################### |
############################################### |
############################################### |
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=pod |
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=item &output_html_ungrouped() |
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Presents the statistics data in a single html table which can be sorted by |
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different columns. |
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=cut |
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############################################### |
############################################### |
############################################### |
############################################### |
sub output_html_ungrouped { |
sub output_html_ungrouped { |
my ($r) = @_; |
my ($r,$option) = @_; |
# |
# |
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if (exists($ENV{'form.plot'}) && $ENV{'form.plot'} ne '') { |
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&plot_statistics($r,$ENV{'form.plot'}); |
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} |
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# |
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my $problem_num = 0; |
my $show_container = 0; |
my $show_container = 0; |
my $show_part = 0; |
my $show_part = 0; |
#$r->print(&ProblemStatisticsLegend()); |
#$r->print(&ProblemStatisticsLegend()); |
my @Header = ("Title","Part","#Stdnts","Tries","Mod", |
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"Mean","#YES","#yes","%Wrng","DoDiff", |
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"S.D.","Skew");#,"D.F.1st","D.F.2nd"); |
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# |
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my $sortby = undef; |
my $sortby = undef; |
foreach (@Header) { |
foreach my $field (@Fields) { |
if ($ENV{'form.sortby'} eq $_) { |
if ($ENV{'form.sortby'} eq $field->{'name'}) { |
$sortby = $_; |
$sortby = $field->{'name'}; |
} |
} |
} |
} |
if (! defined($sortby) || $sortby eq '') { |
if (! defined($sortby) || $sortby eq '' || $sortby eq 'problem_num') { |
$sortby = 'Container'; |
$sortby = 'container'; |
} |
} |
# #FFFFE6 #EEFFCC #DDFFFF FFDDDD #DDFFDD #FFDDFF |
# If there is more than one sequence, list their titles |
my @Sequences = &Apache::lonstatistics::Sequences_with_Assess(); |
my @Sequences = &Apache::lonstatistics::Sequences_with_Assess(); |
if (@Sequences > 1) { |
if (@Sequences < 1) { |
unshift(@Header,"Container"); |
$option .= ' no container'; |
$show_container = 1; |
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} |
} |
# |
# |
$r->print('<table border="0"><tr><td bgcolor="#777777">'."\n"); |
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$r->rflush(); |
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# |
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# Compile the data |
# Compile the data |
my @Statsarray; |
my @Statsarray; |
foreach my $sequence (@Sequences) { |
foreach my $sequence (@Sequences) { |
Line 330 sub output_html_ungrouped {
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Line 403 sub output_html_ungrouped {
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foreach my $resource (@{$sequence->{'contents'}}) { |
foreach my $resource (@{$sequence->{'contents'}}) { |
next if ($resource->{'type'} ne 'assessment'); |
next if ($resource->{'type'} ne 'assessment'); |
foreach my $part (@{$resource->{'parts'}}) { |
foreach my $part (@{$resource->{'parts'}}) { |
my ($num,$tries,$mod,$mean,$Solved,$solved,$DegOfDiff,$STD, |
$problem_num++; |
$SKEW) = &Apache::loncoursedata::get_problem_statistics |
my $data = &get_statistics($sequence,$resource,$part, |
(undef,$resource->{'symb'},$part, |
$problem_num); |
$ENV{'request.course.id'}); |
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# |
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$show_part = 1 if ($part ne '0'); |
$show_part = 1 if ($part ne '0'); |
$part = ' ' if ($part == 0); |
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# |
# |
my $wrongpercent = 0; |
push (@Statsarray,$data); |
if (defined($num) && $num > 0) { |
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$wrongpercent=int(10*100*($num-$Solved+$solved)/$num)/10; |
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} |
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push (@Statsarray, |
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{ 'sequence' => $sequence, |
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'resource' => $resource, |
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'Title' => $resource->{'title'}, |
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'Part' => $part, |
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'#Stdnts' => $num, |
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'Tries' => $tries, |
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'Mod' => $mod, |
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'Mean' => $mean, |
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'#YES' => $Solved, |
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'#yes' => $solved, |
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'%Wrng' => $wrongpercent, |
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'DoDiff' => $DegOfDiff, |
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'S.D.' => $STD, |
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'Skew' => $SKEW, |
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}); |
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} |
} |
} |
} |
} |
} |
# |
# |
# Table Headers |
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$r->print('<table border="0" cellpadding="3">'."\n"); |
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my $Str = ''; |
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foreach (@Header) { |
|
next if ($_ eq 'Part' && !$show_part); |
|
# Do not allow sorting on some fields |
|
if ($_ eq $sortby || /^(Part)$/) { |
|
$Str .= '<th>'.$_.'</th>'; |
|
} else { |
|
$Str .= '<th>'. |
|
'<a href="javascript:document.Statistics.sortby.value='."'$_'". |
|
';document.Statistics.submit();">'. |
|
$_.'</a></th>'; |
|
} |
|
} |
|
$r->print('<tr bgcolor="#FFFFE6">'.$Str."</tr>\n"); |
|
# |
|
# Sort the data |
# Sort the data |
my @OutputOrder; |
my @OutputOrder; |
if ($sortby eq 'Container') { |
if ($sortby eq 'container') { |
@OutputOrder = @Statsarray; |
@OutputOrder = @Statsarray; |
} else { |
} else { |
# $sortby is already defined, so we can charge ahead |
# $sortby is already defined, so we can charge ahead |
Line 389 sub output_html_ungrouped {
|
Line 423 sub output_html_ungrouped {
|
# Alpha comparison |
# Alpha comparison |
@OutputOrder = sort { |
@OutputOrder = sort { |
lc($a->{$sortby}) cmp lc($b->{$sortby}) || |
lc($a->{$sortby}) cmp lc($b->{$sortby}) || |
lc($a->{'Title'}) cmp lc($b->{'Title'}) || |
lc($a->{'title'}) cmp lc($b->{'title'}) || |
lc($a->{'Part'}) cmp lc($b->{'Part'}); |
lc($a->{'part'}) cmp lc($b->{'part'}); |
} @Statsarray; |
} @Statsarray; |
} else { |
} else { |
# Numerical comparison |
# Numerical comparison |
Line 410 sub output_html_ungrouped {
|
Line 444 sub output_html_ungrouped {
|
} |
} |
if ($retvalue eq '0') { |
if ($retvalue eq '0') { |
$retvalue = $b->{$sortby} <=> $a->{$sortby} || |
$retvalue = $b->{$sortby} <=> $a->{$sortby} || |
lc($a->{'Title'}) <=> lc($b->{'Title'}) || |
lc($a->{'title'}) <=> lc($b->{'title'}) || |
lc($a->{'Part'}) <=> lc($b->{'Part'}); |
lc($a->{'part'}) <=> lc($b->{'part'}); |
} |
} |
$retvalue; |
$retvalue; |
} @Statsarray; |
} @Statsarray; |
} |
} |
} |
} |
foreach my $row (@OutputOrder) { |
$option .= 'no part' if (! $show_part); |
$r->print('<tr>'); |
my $num_output = 0; |
if ($show_container) { |
# |
$r->print('<td bgcolor="#FFFFE6">' |
# output the headers |
.$row->{'sequence'}->{'title'}.'</td>'); |
$r->print('<table border="0"><tr><td bgcolor="#777777">'."\n"); |
|
$r->print('<table border="0" cellpadding="3">'."\n"); |
|
my $Str = &statistics_table_header($option.' sortable'); |
|
$r->print('<tr bgcolor="#FFFFE6">'.$Str."</tr>\n"); |
|
# |
|
foreach my $rowdata (@OutputOrder) { |
|
$num_output++; |
|
if ($num_output % 25 == 0) { |
|
$r->print("</table>\n</td></tr></table>\n"); |
|
# |
|
$r->print('<table border="0"><tr><td bgcolor="#777777">'."\n"); |
|
$r->print('<table border="0" cellpadding="3">'."\n"); |
|
my $Str = &statistics_table_header($option.' sortable'); |
|
$r->print('<tr bgcolor="#FFFFE6">'.$Str."</tr>\n"); |
|
$r->rflush(); |
} |
} |
$r->print(&stats_row_from_hash($row,$show_part)); |
$r->print('<tr>'.&statistics_html_table_data($rowdata,$option). |
$r->print("</tr>\n"); |
"</tr>\n"); |
} |
} |
$r->print("</table>\n"); |
$r->print("</table>\n"); |
$r->print("</td></tr></table>\n"); |
$r->print("</td></tr></table>\n"); |
Line 433 sub output_html_ungrouped {
|
Line 481 sub output_html_ungrouped {
|
return; |
return; |
} |
} |
|
|
sub stats_row_from_hash { |
|
my ($data,$show_part) = @_; |
|
return &statistics_html_table_data($data->{'resource'},$data->{'Part'}, |
|
$data->{'#Stdnts'}, $data->{'Tries'}, |
|
$data->{'Mod'}, $data->{'Mean'}, |
|
$data->{'#YES'}, $data->{'#yes'}, |
|
$data->{"\%Wrng"}, $data->{'DoDiff'}, |
|
$data->{'S.D.'}, $data->{'Skew'}, |
|
$show_part); |
|
} |
|
|
|
############################################### |
############################################### |
############################################### |
############################################### |
|
|
|
=pod |
|
|
|
=item &output_excel() |
|
|
|
Presents the statistical data in an Excel 95 compatable spreadsheet file. |
|
|
|
=cut |
|
|
############################################### |
############################################### |
############################################### |
############################################### |
sub output_excel { |
sub output_excel { |
Line 467 sub output_excel {
|
Line 512 sub output_excel {
|
# Check for errors |
# Check for errors |
if (! defined($excel_workbook)) { |
if (! defined($excel_workbook)) { |
$r->log_error("Error creating excel spreadsheet $filename: $!"); |
$r->log_error("Error creating excel spreadsheet $filename: $!"); |
$r->print("Problems creating new Excel file. ". |
$r->print(&mt("Problems creating new Excel file. ". |
"This error has been logged. ". |
"This error has been logged. ". |
"Please alert your LON-CAPA administrator"); |
"Please alert your LON-CAPA administrator.")); |
return ; |
return ; |
} |
} |
# |
# |
Line 518 sub output_excel {
|
Line 563 sub output_excel {
|
$rows_output++; |
$rows_output++; |
$cols_output=0; |
$cols_output=0; |
# |
# |
# Add the headers |
# Long Headersheaders |
my @Header = ("Container","Title","Part","#Stdnts","Tries","Mod", |
foreach my $field (@Fields) { |
"Mean","#YES","#yes","%Wrng","DoDiff", |
next if ($field->{'name'} eq 'problem_num'); |
"S.D.","Skew.");#,"D.F.1st","D.F.2nd"); |
if (exists($field->{'long_title'})) { |
foreach (@Header) { |
$excel_sheet->write($rows_output,$cols_output++, |
$excel_sheet->write($rows_output,$cols_output++,$_); |
$field->{'long_title'}); |
|
} else { |
|
$excel_sheet->write($rows_output,$cols_output++,''); |
|
} |
|
} |
|
$rows_output++; |
|
$cols_output=0; |
|
# Brief headers |
|
foreach my $field (@Fields) { |
|
next if ($field->{'name'} eq 'problem_num'); |
|
# Use english for excel as I am not sure how well excel handles |
|
# other character sets.... |
|
$excel_sheet->write($rows_output,$cols_output++,$field->{'title'}); |
} |
} |
$rows_output++; |
$rows_output++; |
# |
# |
# Write the data |
# Write the data |
|
my $problem_num=0; |
foreach my $sequence (&Apache::lonstatistics::Sequences_with_Assess()) { |
foreach my $sequence (&Apache::lonstatistics::Sequences_with_Assess()) { |
next if ($sequence->{'num_assess'}<1); |
next if ($sequence->{'num_assess'}<1); |
foreach my $resource (@{$sequence->{'contents'}}) { |
foreach my $resource (@{$sequence->{'contents'}}) { |
next if ($resource->{'type'} ne 'assessment'); |
next if ($resource->{'type'} ne 'assessment'); |
foreach my $part (@{$resource->{'parts'}}) { |
foreach my $part (@{$resource->{'parts'}}) { |
$cols_output=0; |
$cols_output=0; |
my ($num,$tries,$mod,$mean,$Solved,$solved,$DegOfDiff,$STD, |
$problem_num++; |
$SKEW) = &Apache::loncoursedata::get_problem_statistics |
my $data = &get_statistics($sequence,$resource,$part, |
(undef,$resource->{'symb'},$part, |
$problem_num); |
$ENV{'request.course.id'}); |
|
# |
# |
if (!defined($part) || $part eq '') { |
if (!defined($part) || $part eq '') { |
$part = ' '; |
$part = ' '; |
} |
} |
my $wrongpercent = 0; |
foreach my $field (@Fields) { |
if (defined($num) && $num > 0) { |
next if ($field->{'name'} eq 'problem_num'); |
$wrongpercent=int(10*100*($num-$Solved+$solved)/$num)/10; |
$excel_sheet->write($rows_output,$cols_output++, |
} |
$data->{$field->{'name'}}); |
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++; |
$rows_output++; |
} |
} |
Line 560 sub output_excel {
|
Line 613 sub output_excel {
|
$excel_workbook->close(); |
$excel_workbook->close(); |
# Tell the user where to get their excel file |
# Tell the user where to get their excel file |
$r->print('<br />'. |
$r->print('<br />'. |
'<a href="'.$filename.'">Your Excel spreadsheet.</a>'."\n"); |
'<a href="'.$filename.'">'. |
|
&mt('Your Excel Spreadsheet').'</a>'."\n"); |
$r->rflush(); |
$r->rflush(); |
return; |
return; |
} |
} |
|
|
|
############################################### |
|
############################################### |
|
|
|
=pod |
|
|
sub statistics_html_table_data { |
=item &statistics_html_table_data() |
my ($resource,$part,$num,$tries,$mod,$mean,$Solved,$solved,$wrongpercent, |
|
$DegOfDiff,$STD,$SKEW,$show_part) = @_; |
|
my $row = ''; |
|
$row .= '<td bgcolor="#FFFFE6">'. |
|
'<a href="'.$resource->{'src'}.'" target="_blank" >'. |
|
$resource->{'title'}.'</a>'. |
|
'</td>'; |
|
$row .= '<td bgcolor="#FFFFE6">'.$part.'</td>' if ($show_part); |
|
foreach ($num,$tries) { |
|
$row .= '<td bgcolor="#EEFFCC" align="right">'.$_.'</td>'; |
|
} |
|
foreach ($mod,$mean) { |
|
$row .= '<td bgcolor="#DDFFFF" align="right">'. |
|
sprintf("%5.2f",$_).'</td>'; |
|
} |
|
foreach ($Solved,$solved) { |
|
$row .= '<td bgcolor="#DDFFFF" align="right">'.$_.'</td>'; |
|
} |
|
foreach ($wrongpercent) { |
|
$row .= '<td bgcolor="#DDFFFF" align="right">'. |
|
sprintf("%5.1f",$_).'</td>'; |
|
} |
|
foreach ($DegOfDiff,$STD,$SKEW) { |
|
$row .= '<td bgcolor="#FFDDDD" align="right">'. |
|
sprintf("%5.2f",$_).'</td>'; |
|
} |
|
return $row; |
|
} |
|
|
|
|
Help function used to format the rows for HTML table output. |
|
|
|
=cut |
|
|
############################################### |
############################################### |
############################################### |
############################################### |
|
sub statistics_html_table_data { |
sub BuildGraphicChart { |
my ($data,$options) = @_; |
my ($graph,$cacheDB,$courseDescription,$students,$courseID,$r,$c)=@_; |
my $row = ''; |
my %cache; |
foreach my $field (@Fields) { |
my $max; |
next if ($options =~ /no $field->{'name'}/); |
my $title = ''; |
$row .= '<td bgcolor="'.$field->{'color'}.'"'; |
if($graph eq 'DoDiffGraph') { |
if (exists($field->{'align'})) { |
$title = 'Degree-of-Difficulty'; |
$row .= ' align="'.$field->{'align'}.'"'; |
} else { |
|
$title = 'Wrong-Percentage'; |
|
} |
|
my $currentSequence = -1; |
|
my $sortProblems = 'Sort Within Sequence'; |
|
my ($result, $orderedProblems) = |
|
&InitializeProblemStatistics($cacheDB, $students, $courseID, $c, $r); |
|
if($result ne 'OK') { |
|
return; |
|
} |
|
my @values = (); |
|
unless(tie(%cache,'GDBM_File',$cacheDB,&GDBM_READER(),0640)) { |
|
return 'Unable to tie database.7'; |
|
} |
|
foreach(@$orderedProblems) { |
|
my ($sequence,$problem,$part)=split(':', $_); |
|
if($cache{'StatisticsMaps'} ne 'All Maps' && |
|
$cache{'StatisticsMaps'} ne $cache{$sequence.':title'}) { |
|
next; |
|
} |
|
if( $currentSequence == -1 || |
|
($sortProblems eq 'Sort Within Sequence' && |
|
$currentSequence != $sequence)) { |
|
if($currentSequence != -1) { |
|
&DrawGraph(\@values,$courseDescription,$title,$max,$r); |
|
} |
|
if($sortProblems eq 'Sort Within Sequence') { |
|
$r->print('<br><b>'.$cache{$sequence.':title'}.'</b>'."\n"); |
|
} |
} |
$currentSequence = $sequence; |
$row .= '>'; |
@values = (); |
if (exists($field->{'special'}) && $field->{'special'} eq 'link') { |
$max=0; |
$row .= '<a href="'.$data->{$field->{'name'}.'.link'}.'">'; |
} |
} |
my $data = 0; |
if (exists($field->{'format'})) { |
if($graph eq 'DoDiffGraph') { |
$row .= sprintf($field->{'format'},$data->{$field->{'name'}}); |
$data = sprintf("%.2f", $cache{$_.':degreeOfDifficulty'}), |
|
} else { |
} else { |
$data = sprintf("%.1f", $cache{$_.':percentWrong'}), |
$row .= $data->{$field->{'name'}}; |
} |
} |
if($max < $data) { |
if (exists($field->{'special'}) && $field->{'special'} eq 'link') { |
$max = $data; |
$row.= '</a>'; |
} |
} |
push(@values, $data); |
$row .= '</td>'; |
} |
} |
untie(%cache); |
return $row; |
&DrawGraph(\@values,$courseDescription,$title,$max,$r); |
|
return; |
|
} |
|
|
|
sub DrawGraph { |
|
my ($values,$courseDescription,$title,$Max,$r)=@_; |
|
my $sendValues = join(',', @$values); |
|
my $sendCount = scalar(@$values); |
|
$r->print("<br>The Maximum Value is: $Max"); |
|
if ( $Max > 1 ) { |
|
if ($Max % 10) { |
|
if ( int($Max) < $Max ) { |
|
$Max++; |
|
$Max = int($Max); |
|
} |
|
} |
|
#(10 - $Max % 10); |
|
} else { $Max = 1; } |
|
my @GData = ('','Problem_number',$title,$Max,$sendCount,$sendValues); |
|
# $r->print('</form>'."\n"); |
|
$r->print('<br>'."\n"); |
|
$r->print('<IMG src="/cgi-bin/graph.png?'. |
|
(join('&', @GData)).'" border="1" />'); |
|
# $r->print('<form>'."\n"); |
|
$r->print('<br>'."\n"); |
|
} |
} |
|
|
#---- Problem Statistics Web Page --------------------------------------- |
sub statistics_table_header { |
sub CreateProblemStatisticsTableHeading { |
my ($options) = @_; |
my ($headings,$r)=@_; |
my $header_row; |
my $Str=''; |
foreach my $field (@Fields) { |
$Str .= '<tr>'."\n"; |
next if ($options =~ /no $field->{'name'}/); |
$Str .= '<th bgcolor="#ffffe6">P#</th>'."\n"; |
$header_row .= '<th>'; |
foreach(@$headings) { |
if ($options =~ /sortable/ && |
$Str .= '<th bgcolor="#ffffe6">'; |
exists($field->{'sortable'}) && $field->{'sortable'} eq 'yes') { |
$Str .= '<a href="/adm/statistics?reportSelected='; |
$header_row .= '<a href="javascript:'. |
$Str .= &Apache::lonnet::escape('Problem Statistics'); |
'document.Statistics.sortby.value='."'".$field->{'name'}."'". |
$Str .= '&ProblemStatisticsSort='; |
';document.Statistics.submit();">'; |
$Str .= &Apache::lonnet::escape($_).'">'.$_.'</a> </th>'."\n"; |
} |
|
$header_row .= &mt($field->{'title'}); |
|
if ($options =~ /sortable/) { |
|
$header_row.= '</a>'; |
|
} |
|
if ($options !~ /no plots/ && |
|
exists($field->{'graphable'}) && |
|
$field->{'graphable'} eq 'yes') { |
|
$header_row.=' ('; |
|
$header_row .= '<a href="javascript:'. |
|
"document.Statistics.plot.value='$field->{'name'}'". |
|
';document.Statistics.submit();">'; |
|
$header_row .= &mt('plot').'</a>)'; |
|
} |
|
$header_row .= '</th>'; |
} |
} |
$Str .= "\n".'</tr>'."\n"; |
return $header_row; |
return $Str; |
|
} |
} |
|
|
sub BuildStatisticsTable { |
############################################### |
my ($cache,$displayFormat,$sortProblems,$orderedProblems,$headings, |
############################################### |
$r,$color)=@_; |
|
my $count = 1; |
=pod |
my $currentSequence = -1; |
|
foreach(@$orderedProblems) { |
=item &plot_statistics() |
my ($sequence,$problem,$part)=split(':', $_); |
|
if($cache->{'StatisticsMaps'} ne 'All Maps' && |
=cut |
$cache->{'StatisticsMaps'} ne $cache->{$sequence.':title'}) { |
|
next; |
############################################### |
} |
############################################### |
if($currentSequence == -1 || |
sub plot_statistics { |
($sortProblems eq 'Sort Within Sequence' && |
my ($r,$datafield) = @_; |
$currentSequence != $sequence)) { |
my @Data; |
if($displayFormat ne 'Display CSV Format') { |
# |
if($currentSequence ne -1) { |
# |
$r->print('</table>'); |
my $sortfield = undef; |
$r->print('</td></tr></table><br>'); |
my $title = undef; |
} |
foreach my $field (@Fields) { |
if($sortProblems eq 'Sort Within Sequence') { |
if ($datafield eq $field->{'name'} && |
$r->print('<b>'.$cache->{$sequence.':title'}.'</b>'); |
exists($field->{'graphable'}) && $field->{'graphable'} eq 'yes') { |
} |
$sortfield = $field->{'name'}; |
$r->print('<table border="0"><tr><td bgcolor="#777777">'."\n"); |
$title = $field->{'long_title'}; |
$r->print('<table border="0" cellpadding="3">'."\n"); |
} |
$r->print(&CreateProblemStatisticsTableHeading($headings, $r)); |
} |
} else { |
return if (! defined($sortfield) || $sortfield eq ''); |
if($sortProblems eq 'Sort Within Sequence') { |
# |
$r->print('"'.$cache->{$sequence.':title'}.'"'); |
my $Max = 0; |
} |
my $problem_num = 0; |
$r->print('<br>'); |
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 $problem_number++; |
|
my $data = &get_statistics($sequence,$resource,$part, |
|
$problem_num); |
|
my $value = $data->{$sortfield}; |
|
$Max = $value if ($Max < $value); |
|
push (@Data,$value); |
} |
} |
$currentSequence = $sequence; |
|
} |
} |
my $ref = '<a href="'.$cache->{$problem.':source'}. |
|
'" target="_blank">'.$cache->{$problem.':title'}.'</a>'; |
|
my $title = $cache->{$problem.':title'}; |
|
if($part != 0) { |
|
$title .= ' Part '.$part; |
|
} |
|
my $source = $cache->{$problem.':source'}; |
|
my $tableData = join('&', $ref, $title, $source, |
|
$cache->{$_.':studentCount'}, |
|
$cache->{$_.':totalTries'}, |
|
$cache->{$_.':maxTries'}, |
|
$cache->{$_.':mean'}, |
|
$cache->{$_.':correct'}, |
|
$cache->{$_.':correctByOverride'}, |
|
$cache->{$_.':percentWrong'}, |
|
$cache->{$_.':degreeOfDifficulty'}, |
|
$cache->{$_.':standardDeviation'}, |
|
$cache->{$_.':skewness'}, |
|
$cache->{$_.':discriminationFactor1'}, |
|
$cache->{$_.':discriminationFactor2'}); |
|
&TableRow($displayFormat,$tableData,$count,$r,$color); |
|
$count++; |
|
} |
|
if($displayFormat ne 'Display CSV Format') { |
|
$r->print('</table>'."\n"); |
|
$r->print('</td></tr></table>'); |
|
} else { |
|
$r->print('<br>'); |
|
} |
} |
return; |
# |
} |
# Print out plot request |
|
my $yaxis = ''; |
sub TableRow { |
if ($sortfield eq 'per_wrong') { |
my ($displayFormat,$Str,$RealIdx,$r,$color)=@_; |
$yaxis = 'Percent'; |
my($ref,$title,$source,$StdNo,$TotalTries,$MxTries,$Avg,$YES,$Override, |
} |
$Wrng,$DoD,$SD,$Sk,$_D1,$_D2)=split(/\&/,$Str); |
# |
my $Ptr; |
# Determine appropriate value for $Max |
if($displayFormat eq 'Display CSV Format') { |
if ($sortfield eq 'deg_of_diff') { |
$Ptr='"'.$RealIdx.'",'."\n". |
if ($Max > 0.5) { |
'"'.$title.'",'."\n". |
$Max = 1; |
'"'.$source.'",'."\n". |
} elsif ($Max > 0.2) { |
'"'.$StdNo.'",'."\n". |
$Max = 0.5; |
'"'.$TotalTries.'",'."\n". |
} elsif ($Max > 0.1) { |
'"'.$MxTries.'",'."\n". |
$Max = 0.2; |
'"'.$Avg.'",'."\n". |
} |
'"'.$YES.'",'."\n". |
} elsif ($sortfield eq 'per_wrong') { |
'"'.$Override.'",'."\n". |
if ($Max > 50) { |
'"'.$Wrng.'",'."\n". |
$Max = 100; |
'"'.$DoD.'",'."\n". |
} elsif ($Max > 25) { |
'"'.$SD.'",'."\n". |
$Max = 50; |
'"'.$Sk.'",'."\n". |
} elsif ($Max > 20) { |
'"'.$_D1.'",'."\n". |
$Max = 25; |
'"'.$_D2.'"'."\n". |
} elsif ($Max > 10) { |
"<br>\n"; |
$Max = 20; |
$r->print("\n".$Ptr); |
} elsif ($Max > 5) { |
} else { |
$Max = 10; |
$Ptr='<tr>'."\n". |
} else { |
'<td bgcolor="#ffffe6">'.$RealIdx.'</td>'."\n". |
$Max = 5; |
'<td bgcolor="#ffffe6">'.$ref.'</td>'."\n". |
} |
'<td bgcolor='.$color->{"yellow"}.'> '.$StdNo.'</td>'."\n". |
|
'<td bgcolor='.$color->{"yellow"}.'>'.$TotalTries.'</td>'."\n". |
|
'<td bgcolor='.$color->{"yellow"}.'>'.$MxTries.'</td>'."\n". |
|
'<td bgcolor='.$color->{"gb"}.'>'.$Avg.'</td>'."\n". |
|
'<td bgcolor='.$color->{"gb"}.'> '.$YES.'</td>'."\n". |
|
'<td bgcolor='.$color->{"gb"}.'> '.$Override.'</td>'."\n". |
|
'<td bgcolor='.$color->{"red"}.'> '.$Wrng.'</td>'."\n". |
|
'<td bgcolor='.$color->{"red"}.'> '.$DoD.'</td>'."\n". |
|
'<td bgcolor='.$color->{"green"}.'> '.$SD.'</td>'."\n". |
|
'<td bgcolor='.$color->{"green"}.'> '.$Sk.'</td>'."\n". |
|
'<td bgcolor='.$color->{"purple"}.'> '.$_D1.'</td>'."\n". |
|
'<td bgcolor='.$color->{"purple"}.'> '.$_D2.'</td>'."\n"; |
|
$r->print($Ptr.'</tr>'."\n"); |
|
} |
} |
|
|
|
$r->print("<p>".&Apache::loncommon::DrawBarGraph($title, |
|
'Problem Number', |
|
$yaxis, |
|
$Max, |
|
undef, |
|
\@Data)."</p>\n"); |
|
# |
|
# Print out the data |
|
$ENV{'form.sortby'} = 'Contents'; |
|
# &output_html_ungrouped($r); |
return; |
return; |
} |
} |
|
|
# For loading the colored table for display or un-colored for print |
sub get_statistics { |
sub setbgcolor { |
my ($sequence,$resource,$part,$problem_num) = @_; |
my $PrintTable=shift; |
# |
my %color; |
my $symb = $resource->{'symb'}; |
if ($PrintTable){ |
my $courseid = $ENV{'request.course.id'}; |
$color{"gb"}="#FFFFFF"; |
# |
$color{"red"}="#FFFFFF"; |
my $students = \@Apache::lonstatistics::Students; |
$color{"yellow"}="#FFFFFF"; |
if ($Apache::lonstatistics::SelectedSections[0] eq 'all') { |
$color{"green"}="#FFFFFF"; |
$students = undef; |
$color{"purple"}="#FFFFFF"; |
|
} else { |
|
$color{"gb"}="#DDFFFF"; |
|
$color{"red"}="#FFDDDD"; |
|
$color{"yellow"}="#EEFFCC"; |
|
$color{"green"}="#DDFFDD"; |
|
$color{"purple"}="#FFDDFF"; |
|
} |
} |
return \%color; |
my $data = &Apache::loncoursedata::get_problem_statistics |
|
($students,$symb,$part,$courseid); |
|
$data->{'part'} = $part; |
|
$data->{'problem_num'} = $problem_num; |
|
$data->{'container'} = $sequence->{'title'}; |
|
$data->{'title'} = $resource->{'title'}; |
|
$data->{'title.link'} = $resource->{'src'}.'?symb='. |
|
&Apache::lonnet::escape($resource->{'symb'}); |
|
# |
|
return $data; |
} |
} |
|
|
sub ProblemStatisticsButtons { |
############################################### |
my ($displayFormat, $displayLegend, $sortProblems)=@_; |
############################################### |
my $Ptr = '<tr><td></td><td align="left">'; |
|
$Ptr .= '<input type="submit" name="DoDiffGraph" '; |
=pod |
$Ptr .= 'value="Plot Degree of Difficulty" />'."\n"; |
|
$Ptr .= '</td><td align="left">'; |
|
$Ptr .= '<input type="submit" name="PercentWrongGraph" '; |
|
$Ptr .= 'value="Plot Percent Wrong" />'."\n"; |
|
$Ptr .= '</td></tr><tr><td></td><td>'."\n"; |
|
$Ptr .= '<input type="submit" name="SortProblems" '; |
|
if($sortProblems eq 'Sort All Problems') { |
|
$Ptr .= 'value="Sort Within Sequence" />'."\n"; |
|
} else { |
|
$Ptr .= 'value="Sort All Problems" />'."\n"; |
|
} |
|
$Ptr .= '</td><td align="left">'; |
|
$Ptr .= '<input type="submit" name="DisplayLegend" '; |
|
if($displayLegend eq 'Show Legend') { |
|
$Ptr .= 'value="Hide Legend" />'."\n"; |
|
} else { |
|
$Ptr .= 'value="Show Legend" />'."\n"; |
|
} |
|
$Ptr .= '</td><td align="left">'; |
|
$Ptr .= '<input type="submit" name="DisplayCSVFormat" '; |
|
if($displayFormat eq 'Display CSV Format') { |
|
$Ptr .= 'value="Display Table Format" />'."\n"; |
|
} else { |
|
$Ptr .= 'value="Display CSV Format" />'."\n"; |
|
} |
|
$Ptr .= '</td></tr>'; |
|
return $Ptr; |
|
} |
|
|
|
|
=item &ProblemStatisticsLegend() |
|
|
|
HELP This needs to be localized, or at least generated automatically. |
|
|
|
=cut |
|
|
|
############################################### |
|
############################################### |
sub ProblemStatisticsLegend { |
sub ProblemStatisticsLegend { |
my $Ptr = ''; |
my $Ptr = ''; |
$Ptr = '<table border="0">'; |
$Ptr = '<table border="0">'; |
Line 869 sub ProblemStatisticsLegend {
|
Line 821 sub ProblemStatisticsLegend {
|
$Ptr .= '<b>Tries</b></td>'; |
$Ptr .= '<b>Tries</b></td>'; |
$Ptr .= '<td>Total number of tries for solving the problem.'; |
$Ptr .= '<td>Total number of tries for solving the problem.'; |
$Ptr .= '</td></tr><tr><td>'; |
$Ptr .= '</td></tr><tr><td>'; |
$Ptr .= '<b>Mod</b></td>'; |
$Ptr .= '<b>Max Tries</b></td>'; |
$Ptr .= '<td>Largest number of tries for solving the problem by a student.'; |
$Ptr .= '<td>Largest number of tries for solving the problem by a student.'; |
$Ptr .= '</td></tr><tr><td>'; |
$Ptr .= '</td></tr><tr><td>'; |
$Ptr .= '<b>Mean</b></td>'; |
$Ptr .= '<b>Mean</b></td>'; |