version 1.104, 2005/04/07 06:56:24
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version 1.119, 2011/01/17 00:19:41
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Line 52 package Apache::lonproblemstatistics;
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Line 52 package Apache::lonproblemstatistics;
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use strict; |
use strict; |
use Apache::lonnet; |
use Apache::lonnet; |
use Apache::loncommon(); |
use Apache::loncommon(); |
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use Apache::lonquickgrades(); |
use Apache::lonhtmlcommon; |
use Apache::lonhtmlcommon; |
use Apache::loncoursedata; |
use Apache::loncoursedata; |
use Apache::lonstatistics; |
use Apache::lonstatistics; |
Line 60 use Apache::lonlocal;
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Line 61 use Apache::lonlocal;
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use Spreadsheet::WriteExcel; |
use Spreadsheet::WriteExcel; |
use Apache::lonstathelpers(); |
use Apache::lonstathelpers(); |
use Time::HiRes; |
use Time::HiRes; |
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use LONCAPA; |
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my @StatsArray; |
my @StatsArray; |
my %SeqStat; # keys are symbs, values are hash refs |
my %SeqStat; # keys are symbs, values are hash refs |
Line 121 my @Fields = (
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Line 124 my @Fields = (
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align => 'left', |
align => 'left', |
color => '#FFFFE6', |
color => '#FFFFE6', |
special => 'link', |
special => 'link', |
sortable => 'yes', |
sortable => 'yes', |
selectable => 'no', |
selectable => 'no', |
defaultselected => 'yes', |
defaultselected => 'yes', |
}, |
}, |
{ name => 'part', |
{ name => 'part', |
title => 'Part', |
title => 'Part', |
align => 'left', |
align => 'left', |
color => '#FFFFE6', |
color => '#FFFFE6', |
Line 373 my @SeqFields = (
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Line 376 my @SeqFields = (
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align => 'left', |
align => 'left', |
color => '#FFFFE6', |
color => '#FFFFE6', |
special => 'no', |
special => 'no', |
sortable => 'no', |
sortable => 'no', |
selectable => 'yes', |
selectable => 'yes', |
defaultselected => 'no', |
defaultselected => 'no', |
}, |
}, |
Line 508 my @SeqFields = (
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Line 511 my @SeqFields = (
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long_title => 'KR-21 reliability statistic', |
long_title => 'KR-21 reliability statistic', |
selectable => 'yes', |
selectable => 'yes', |
defaultselected => 'no', |
defaultselected => 'no', |
}, |
}, |
); |
); |
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my %SelectedFields; |
my %SelectedFields; |
Line 575 sub parse_field_selection {
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Line 578 sub parse_field_selection {
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} |
} |
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sub field_selection_input { |
sub field_selection_input { |
my $Str = '<select name="fieldselections" multiple size="5">'."\n"; |
my $Str = '<select name="fieldselections" multiple="multiple" size="5">'."\n"; |
$Str .= '<option value="all">all</option>'."\n"; |
$Str .= '<option value="all">all</option>'."\n"; |
foreach my $field (@Fields) { |
foreach my $field (@Fields) { |
next if ($field->{'selectable'} ne 'yes'); |
next if ($field->{'selectable'} ne 'yes'); |
Line 608 sub CreateInterface {
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Line 611 sub CreateInterface {
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&parse_field_selection(); |
&parse_field_selection(); |
# |
# |
my $Str = ''; |
my $Str = ''; |
$Str .= &Apache::lonhtmlcommon::breadcrumbs |
$Str .= '<p>'; |
(undef,'Overall Problem Statistics','Statistics_Overall_Key'); |
$Str .= &Apache::loncommon::start_data_table(); |
$Str .= '<table cellspacing="5">'."\n"; |
$Str .= &Apache::loncommon::start_data_table_header_row(); |
$Str .= '<tr>'; |
$Str .= '<th>'.&mt('Sections').'</th>'; |
$Str .= '<td align="center"><b>'.&mt('Sections').'</b></td>'; |
$Str .= '<th>'.&mt('Groups').'</th>'; |
$Str .= '<td align="center"><b>'.&mt('Enrollment Status').'</b></td>'; |
$Str .= '<th>'.&mt('Access Status').'</th>'; |
$Str .= '<td align="center"><b>'.&mt('Sequences and Folders').'</b></td>'; |
$Str .= '<th>'.&mt('Sequences and Folders').'</th>'; |
$Str .= '<td align="center"><b>'.&mt('Statistics').'</b></td>'; |
$Str .= '<th>'.&mt('Statistics').'</th>'; |
$Str .= '<td rowspan="2">'. |
$Str .= '<th>'.&mt('Plot Graph').'</th>'; |
&Apache::lonstathelpers::limit_by_time_form().'</td>'; |
$Str .= '<th>'.&mt('Time Period').'</th>'; |
$Str .= '</tr>'."\n"; |
$Str .= &Apache::loncommon::end_data_table_header_row(); |
# |
# |
$Str .= '<tr><td align="center">'."\n"; |
$Str .= &Apache::loncommon::start_data_table_row(); |
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$Str .= '<td align="center" valign="top">'."\n"; |
$Str .= &Apache::lonstatistics::SectionSelect('Section','multiple',5); |
$Str .= &Apache::lonstatistics::SectionSelect('Section','multiple',5); |
$Str .= '</td><td align="center">'; |
$Str .= '</td><td align="center" valign="top">'; |
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$Str .= &Apache::lonstatistics::GroupSelect('Group','multiple',5); |
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$Str .= '</td><td align="center" valign="top">'; |
$Str .= &Apache::lonhtmlcommon::StatusOptions(undef,undef,5); |
$Str .= &Apache::lonhtmlcommon::StatusOptions(undef,undef,5); |
$Str .= '</td><td align="center">'; |
$Str .= '</td><td align="center" valign="top">'; |
# |
# |
$Str .= &Apache::lonstatistics::map_select('Maps','multiple,all',5); |
$Str .= &Apache::lonstatistics::map_select('Maps','multiple,all',5); |
$Str .= '</td><td>'.&field_selection_input(); |
$Str .= '</td><td align="center" valign="top">'; |
$Str .= '</td></tr>'."\n"; |
$Str .= &field_selection_input(); |
$Str .= '</table>'."\n"; |
$Str .= '</td><td align="center" valign="top">'; |
# |
$Str .= &plot_dropdown(); |
$Str .= '<p>'.&mt('Status: [_1]', |
$Str .= '</td>'."\n"; |
'<input type="text" '. |
$Str .= '</td><td align="center" valign="top">'; |
'name="stats_status" size="60" value="" />' |
$Str .= &Apache::lonstathelpers::limit_by_time_form(); |
). |
$Str .= '</td>'."\n"; |
'</nobr></p>'; |
$Str .= &Apache::loncommon::end_data_table_row(); |
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$Str .= &Apache::loncommon::end_data_table(); |
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# |
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$Str .= '<p><span class="LC_nobreak">' |
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.&mt('Status: [_1]', |
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'<input type="text" name="stats_status"' |
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.' size="60" value="" readonly="readonly" />') |
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.'</span></p>'; |
# |
# |
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$Str .= '</p>'; |
$Str .= '<input type="submit" name="GenerateStatistics" value="'. |
$Str .= '<input type="submit" name="GenerateStatistics" value="'. |
&mt('Generate Statistics').'" />'; |
&mt('Generate Statistics').'" />'; |
$Str .= ' 'x5; |
$Str .= (' 'x10); |
$Str .= 'Plot '.&plot_dropdown().(' 'x10); |
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# |
# |
return $Str; |
return $Str; |
} |
} |
Line 661 Main interface to problem statistics.
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Line 674 Main interface to problem statistics.
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my $navmap; |
my $navmap; |
my @sequences; |
my @sequences; |
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sub clean_up { |
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undef($navmap); |
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undef(@sequences); |
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} |
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sub BuildProblemStatisticsPage { |
sub BuildProblemStatisticsPage { |
my ($r,$c)=@_; |
my ($r,$c)=@_; |
undef($navmap); |
undef($navmap); |
Line 669 sub BuildProblemStatisticsPage {
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Line 687 sub BuildProblemStatisticsPage {
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my %Saveable_Parameters = ('Status' => 'scalar', |
my %Saveable_Parameters = ('Status' => 'scalar', |
'statsoutputmode' => 'scalar', |
'statsoutputmode' => 'scalar', |
'Section' => 'array', |
'Section' => 'array', |
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'Groups' => 'array', |
'StudentData' => 'array', |
'StudentData' => 'array', |
'Maps' => 'array', |
'Maps' => 'array', |
'fieldselections'=> 'array'); |
'fieldselections'=> 'array'); |
Line 684 sub BuildProblemStatisticsPage {
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Line 703 sub BuildProblemStatisticsPage {
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undef(%SeqStat); |
undef(%SeqStat); |
# |
# |
# Finally let the user know we are here |
# Finally let the user know we are here |
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$r->print(&Apache::lonhtmlcommon::breadcrumbs('Overall Problem Statistics', |
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'Statistics_Overall_Key')); |
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&Apache::lonquickgrades::startGradeScreen($r,'statistics'); |
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my $interface = &CreateInterface($r); |
my $interface = &CreateInterface($r); |
$r->print($interface); |
$r->print($interface); |
$r->print('<input type="hidden" name="sortby" value="'.$env{'form.sortby'}. |
$r->print('<input type="hidden" name="sortby" value="'.$env{'form.sortby'}. |
'" />'); |
'" />'); |
# |
# |
my @CacheButtonHTML = |
my @CacheButtonHTML = |
&Apache::lonstathelpers::manage_caches($r,'Statistics','stats_status'); |
&Apache::lonstathelpers::manage_caches($r,'Statistics','stats_status'); |
my $Str; |
my $Str; |
foreach my $html (@CacheButtonHTML) { |
foreach my $html (@CacheButtonHTML) { |
Line 698 sub BuildProblemStatisticsPage {
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Line 721 sub BuildProblemStatisticsPage {
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# |
# |
$r->print($Str); |
$r->print($Str); |
if (! exists($env{'form.firstrun'})) { |
if (! exists($env{'form.firstrun'})) { |
$r->print('<h3>'. |
$r->print('<p class="LC_info"><b>'. |
&mt('Press "Generate Statistics" when you are ready.'). |
&mt('Press "Generate Statistics" when you are ready.'). |
'</h3><p>'. |
'</b></p>'. |
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'<p class="LC_info">'. |
&mt('It may take some time to update the student data '. |
&mt('It may take some time to update the student data '. |
'for the first analysis. Future analysis this session '. |
'for the first analysis. Future analysis this session '. |
' will not have this delay.'). |
'will not have this delay.'). |
'</p>'); |
'</p>'); |
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&clean_up(); |
return; |
return; |
} |
} |
$r->rflush(); |
$r->rflush(); |
Line 713 sub BuildProblemStatisticsPage {
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Line 738 sub BuildProblemStatisticsPage {
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# it does not slow things down noticably. |
# it does not slow things down noticably. |
&Apache::loncoursedata::populate_weight_table(); |
&Apache::loncoursedata::populate_weight_table(); |
# |
# |
($navmap,@sequences) = |
($navmap,@sequences) = |
&Apache::lonstatistics::selected_sequences_with_assessments(); |
&Apache::lonstatistics::selected_sequences_with_assessments(); |
if (! ref($navmap)) { |
if (! ref($navmap)) { |
$r->print('<h1>'.&mt('A course-wide error occured.').'</h1>'. |
$r->print('<div class="LC_error">'.&mt('A course-wide error occurred.').'</div>'. |
'<h3>'.$navmap.'</h3>'); |
'<h3>'.$navmap.'</h3>'); |
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&clean_up(); |
return; |
return; |
} |
} |
if (exists($env{'form.Excel'})) { |
if (exists($env{'form.Excel'})) { |
Line 725 sub BuildProblemStatisticsPage {
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Line 751 sub BuildProblemStatisticsPage {
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&Apache::lonstatistics::section_and_enrollment_description(). |
&Apache::lonstatistics::section_and_enrollment_description(). |
'</h4>'); |
'</h4>'); |
&Excel_output($r); |
&Excel_output($r); |
} else { |
} else { |
$r->print('<input type="submit" name="Excel" value="'. |
$r->print('<input type="submit" name="Excel" value="'. |
&mt('Produce Excel Output').'" />'.' 'x5); |
&mt('Produce Excel Output').'" />'.' 'x5); |
$r->rflush(); |
$r->rflush(); |
Line 734 sub BuildProblemStatisticsPage {
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Line 760 sub BuildProblemStatisticsPage {
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'</h4>'); |
'</h4>'); |
my $count = 0; |
my $count = 0; |
foreach my $seq (@sequences) { |
foreach my $seq (@sequences) { |
my @resources = |
my @resources = |
&Apache::lonstathelpers::get_resources($navmap,$seq); |
&Apache::lonstathelpers::get_resources($navmap,$seq); |
$count += scalar(@resources); |
$count += scalar(@resources); |
} |
} |
Line 765 sub BuildProblemStatisticsPage {
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Line 791 sub BuildProblemStatisticsPage {
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&output_sequence_statistics($r); |
&output_sequence_statistics($r); |
} |
} |
} |
} |
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&clean_up(); |
return; |
return; |
} |
} |
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Line 778 sub output_sequence_statistics {
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Line 805 sub output_sequence_statistics {
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'<table border="0" cellpadding="3">'."\n". |
'<table border="0" cellpadding="3">'."\n". |
'<tr bgcolor="#FFFFE6">'); |
'<tr bgcolor="#FFFFE6">'); |
$r->print(&sequence_html_header()); |
$r->print(&sequence_html_header()); |
foreach my $seq (@sequences) { |
foreach my $seq (@sequences) { |
last if ($c->aborted); |
last if ($c->aborted); |
&compute_sequence_statistics($seq); |
&compute_sequence_statistics($seq); |
$r->print(&sequence_html_output($seq)); |
$r->print(&sequence_html_output($seq)); |
Line 1001 sub make_single_stat_plot {
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Line 1028 sub make_single_stat_plot {
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} |
} |
# |
# |
# Build up the data sets to plot |
# Build up the data sets to plot |
my @Labels; |
my @Labels; |
my @Data; |
my @Data; |
my $max = 1; |
my $max = 1; |
foreach my $data (@StatsArray) { |
foreach my $data (@StatsArray) { |
Line 1041 sub degrees_plot {
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Line 1068 sub degrees_plot {
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my $plot = ''; |
my $plot = ''; |
my $ymax = 0; |
my $ymax = 0; |
my $ymin = 0; |
my $ymin = 0; |
my @Disc; my @Diff; my @Labels; |
my @Disc; my @Diff; my @Labels; |
foreach my $data (@StatsArray) { |
foreach my $data (@StatsArray) { |
push(@Labels,$data->{'problem_num'}); |
push(@Labels,$data->{'problem_num'}); |
my $disc = $data->{'deg_of_disc'}; |
my $disc = $data->{'deg_of_disc'}; |
Line 1131 sub degrees_plot {
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Line 1158 sub degrees_plot {
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</curve> |
</curve> |
</gnuplot> |
</gnuplot> |
END |
END |
my $plotresult = |
my $plotresult = |
'<p>'.&Apache::lonxml::xmlparse($r,'web',$plot).'</p>'.$/; |
'<p>'.&Apache::lonxml::xmlparse($r,'web',$plot).'</p>'.$/; |
$r->print($plotresult); |
$r->print($plotresult); |
return; |
return; |
Line 1216 sub tries_data_plot {
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Line 1243 sub tries_data_plot {
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</curve> |
</curve> |
</gnuplot> |
</gnuplot> |
END |
END |
my $plotresult = |
my $plotresult = |
'<p>'.&Apache::lonxml::xmlparse($r,'web',$plot).'</p>'.$/; |
'<p>'.&Apache::lonxml::xmlparse($r,'web',$plot).'</p>'.$/; |
$r->print($plotresult); |
$r->print($plotresult); |
return; |
return; |
Line 1302 sub Excel_output {
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Line 1329 sub Excel_output {
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&Apache::lonstatistics::section_and_enrollment_description('plaintext'), |
&Apache::lonstatistics::section_and_enrollment_description('plaintext'), |
$format->{'h3'}); |
$format->{'h3'}); |
$cols_output += scalar(&Apache::lonstatistics::get_selected_sections()); |
$cols_output += scalar(&Apache::lonstatistics::get_selected_sections()); |
|
$cols_output += scalar(&Apache::lonstatistics::get_selected_groups()); |
# |
# |
# Time restrictions |
# Time restrictions |
my $time_string; |
my $time_string; |
Line 1326 sub Excel_output {
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Line 1354 sub Excel_output {
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$excel_sheet->write($rows_output,$cols_output++, |
$excel_sheet->write($rows_output,$cols_output++, |
'Compiled on '.localtime(time)); |
'Compiled on '.localtime(time)); |
# |
# |
$rows_output++; |
$rows_output++; |
$cols_output=0; |
$cols_output=0; |
## |
## |
## Sequence Statistics |
## Sequence Statistics |
## |
## |
&write_headers($excel_sheet,$format,\$rows_output,\$cols_output, |
&write_headers($excel_sheet,$format,\$rows_output,\$cols_output, |
\@SeqFields); |
\@SeqFields); |
foreach my $seq (@sequences) { |
foreach my $seq (@sequences) { |
Line 1408 sub write_headers {
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Line 1436 sub write_headers {
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foreach my $field (@{$Fields}) { |
foreach my $field (@{$Fields}) { |
next if ($field->{'selected'} ne 'yes'); |
next if ($field->{'selected'} ne 'yes'); |
next if ($field->{'name'} eq 'problem_num'); |
next if ($field->{'name'} eq 'problem_num'); |
# Use english for excel as I am not sure how well excel handles |
# Use english for excel as I am not sure how well excel handles |
# other character sets.... |
# other character sets.... |
$excel_sheet->write($$rows_output,$$cols_output, |
$excel_sheet->write($$rows_output,$$cols_output, |
$field->{'title'}, |
$field->{'title'}, |
Line 1432 sub compute_statistics_on_sequence {
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Line 1460 sub compute_statistics_on_sequence {
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my @Data; |
my @Data; |
foreach my $res (&Apache::lonstathelpers::get_resources($navmap,$seq)) { |
foreach my $res (&Apache::lonstathelpers::get_resources($navmap,$seq)) { |
foreach my $part (@{$res->parts}) { |
foreach my $part (@{$res->parts}) { |
next if ($res->is_survey($part)); |
next if (($res->is_survey($part)) || ($res->is_anonsurvey($part))) ; |
# |
# |
# This is where all the work happens |
# This is where all the work happens |
my $data = &get_statistics($seq,$res,$part,scalar(@StatsArray)+1); |
my $data = &get_statistics($seq,$res,$part,scalar(@StatsArray)+1); |
Line 1521 sub sort_data {
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Line 1549 sub sort_data {
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=item &get_statistics() |
=item &get_statistics() |
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|
Wrapper routine from the call to loncoursedata::get_problem_statistics. |
Wrapper routine from the call to loncoursedata::get_problem_statistics. |
Calls lonstathelpers::get_time_limits() to limit the data set by time |
Calls lonstathelpers::get_time_limits() to limit the data set by time |
and &compute_discrimination_factor |
and &compute_discrimination_factor |
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Inputs: $sequence, $resource, $part, $problem_num |
Inputs: $sequence, $resource, $part, $problem_num |
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Returns: Hash reference with statistics data from |
Returns: Hash reference with statistics data from |
loncoursedata::get_problem_statistics. |
loncoursedata::get_problem_statistics. |
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=cut |
=cut |
Line 1543 sub get_statistics {
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Line 1571 sub get_statistics {
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# |
# |
my $data = &Apache::loncoursedata::get_problem_statistics |
my $data = &Apache::loncoursedata::get_problem_statistics |
([&Apache::lonstatistics::get_selected_sections()], |
([&Apache::lonstatistics::get_selected_sections()], |
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[&Apache::lonstatistics::get_selected_groups()], |
$Apache::lonstatistics::enrollment_status, |
$Apache::lonstatistics::enrollment_status, |
$symb,$part,$courseid,$starttime,$endtime); |
$symb,$part,$courseid,$starttime,$endtime); |
$data->{'symb'} = $symb; |
$data->{'symb'} = $symb; |
Line 1551 sub get_statistics {
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Line 1580 sub get_statistics {
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$data->{'container'} = $sequence->compTitle; |
$data->{'container'} = $sequence->compTitle; |
$data->{'title'} = $resource->compTitle; |
$data->{'title'} = $resource->compTitle; |
$data->{'title.link'} = $resource->src.'?symb='. |
$data->{'title.link'} = $resource->src.'?symb='. |
&Apache::lonnet::escape($resource->symb); |
&escape($resource->symb); |
# |
# |
if ($SelectedFields{'deg_of_disc'}) { |
if ($SelectedFields{'deg_of_disc'}) { |
$data->{'deg_of_disc'} = |
$data->{'deg_of_disc'} = |
&compute_discrimination_factor($resource,$part,$sequence); |
&compute_discrimination_factor($resource,$part,$sequence); |
} |
} |
# |
# |
Line 1567 sub get_statistics {
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Line 1596 sub get_statistics {
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$data->{'course'} = $env{'request.course.id'}; |
$data->{'course'} = $env{'request.course.id'}; |
my $urlres=(&Apache::lonnet::decode_symb($resource->symb))[2]; |
my $urlres=(&Apache::lonnet::decode_symb($resource->symb))[2]; |
$data->{'urlres'}=$urlres; |
$data->{'urlres'}=$urlres; |
my %storestats = |
my %storestats = |
&LONCAPA::lonmetadata::dynamic_metadata_storage($data); |
&LONCAPA::lonmetadata::dynamic_metadata_storage($data); |
my ($dom,$user) = $urlres=~/^(\w+)\/(\w+)/; |
my ($dom,$user) = ($urlres=~m{^($LONCAPA::domain_re)/($LONCAPA::username_re)}); |
&Apache::lonnet::put('nohist_resevaldata',\%storestats,$dom,$user); |
&Apache::lonnet::put('nohist_resevaldata',\%storestats,$dom,$user); |
} |
} |
# |
# |
Line 1577 sub get_statistics {
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Line 1606 sub get_statistics {
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($data->{'num_solved'}+0.1); |
($data->{'num_solved'}+0.1); |
# |
# |
# Get the due date for research purposes (commented out most of the time) |
# Get the due date for research purposes (commented out most of the time) |
# $data->{'duedate'} = |
# my $duedate = &Apache::lonnet::EXT('resource.'.$part.'.duedate',$symb);; |
# &Apache::lonnet::EXT('resource.'.$part.'.duedate',$symb); |
# my $opendate = &Apache::lonnet::EXT('resource.'.$part.'.opendate',$symb); |
# $data->{'opendate'} = |
# my $maxtries = &Apache::lonnet::EXT('resource.'.$part.'.maxtries',$symb); |
# &Apache::lonnet::EXT('resource.'.$part.'.opendate',$symb); |
# my $hinttries = &Apache::lonnet::EXT('resource.'.$part.'.hinttries',$symb); |
# $data->{'maxtries'} = |
my $weight = &Apache::lonnet::EXT('resource.'.$part.'.weight',$symb); |
# &Apache::lonnet::EXT('resource.'.$part.'.maxtries',$symb); |
$data->{'weight'} = $weight; |
# $data->{'hinttries'} = |
# $data->{'duedate'} = $duedate; |
# &Apache::lonnet::EXT('resource.'.$part.'.hinttries',$symb); |
# $data->{'opendate'} = $opendate; |
$data->{'weight'} = |
# $data->{'maxtries'} = $maxtries; |
&Apache::lonnet::EXT('resource.'.$part.'.weight',$symb); |
# $data->{'hinttries'} = $hinttries; |
# $data->{'resptypes'} = join(',',@{$resource->{'partdata'}->{$part}->{'ResponseTypes'}}); |
# $data->{'resptypes'} = join(',',@{$resource->{'partdata'}->{$part}->{'ResponseTypes'}}); |
return $data; |
return $data; |
} |
} |
Line 1617 sub compute_discrimination_factor {
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Line 1646 sub compute_discrimination_factor {
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# |
# |
# rank |
# rank |
my ($starttime,$endtime) = &Apache::lonstathelpers::get_time_limits(); |
my ($starttime,$endtime) = &Apache::lonstathelpers::get_time_limits(); |
my $ranking = |
my $ranking = |
&Apache::loncoursedata::rank_students_by_scores_on_resources |
&Apache::loncoursedata::rank_students_by_scores_on_resources |
(\@Resources, |
(\@Resources, |
[&Apache::lonstatistics::get_selected_sections()], |
[&Apache::lonstatistics::get_selected_sections()], |
|
[&Apache::lonstatistics::get_selected_groups()], |
$Apache::lonstatistics::enrollment_status,undef, |
$Apache::lonstatistics::enrollment_status,undef, |
$starttime,$endtime); |
$starttime,$endtime, $symb); |
# |
# |
# compute their percent scores on the problems in the sequence, |
# compute their percent scores on the problems in the sequence, |
my $number_to_grab = int(scalar(@{$ranking})/4); |
my $number_to_grab = int(scalar(@{$ranking})/4); |
my $num_students = scalar(@{$ranking}); |
my $num_students = scalar(@{$ranking}); |
my @BottomSet = map { $_->[&Apache::loncoursedata::RNK_student()]; |
my @BottomSet = map { $_->[&Apache::loncoursedata::RNK_student()]; |
} @{$ranking}[0..$number_to_grab]; |
} @{$ranking}[0..$number_to_grab]; |
my @TopSet = |
my @TopSet = |
map { |
map { |
$_->[&Apache::loncoursedata::RNK_student()]; |
$_->[&Apache::loncoursedata::RNK_student()]; |
} @{$ranking}[($num_students-$number_to_grab)..($num_students-1)]; |
} @{$ranking}[-$number_to_grab..0]; |
if (! @BottomSet || (@BottomSet == 1 && $BottomSet[0] eq '') || |
if (! @BottomSet || (@BottomSet == 1 && $BottomSet[0] eq '') || |
! @TopSet || (@TopSet == 1 && $TopSet[0] eq '')) { |
! @TopSet || (@TopSet == 1 && $TopSet[0] eq '')) { |
return 'nan'; |
return 'nan'; |
} |
} |
my ($bottom_sum,$bottom_max) = |
my ($bottom_sum,$bottom_max) = |
&Apache::loncoursedata::get_sum_of_scores($symb,$part,\@BottomSet, |
&Apache::loncoursedata::get_sum_of_scores($symb,$part,\@BottomSet, |
undef,$starttime,$endtime); |
undef,$starttime,$endtime); |
my ($top_sum,$top_max) = |
my ($top_sum,$top_max) = |
&Apache::loncoursedata::get_sum_of_scores($symb,$part,\@TopSet, |
&Apache::loncoursedata::get_sum_of_scores($symb,$part,\@TopSet, |
undef,$starttime,$endtime); |
undef,$starttime,$endtime); |
my $deg_of_disc; |
my $deg_of_disc; |
Line 1663 sub compute_discrimination_factor {
|
Line 1693 sub compute_discrimination_factor {
|
## |
## |
## K=the number of items in your test |
## K=the number of items in your test |
## M=the mean score on the test |
## M=the mean score on the test |
## s=the standard deviation of the scores on your test |
## s=the standard deviation of the scores on your test |
## |
## |
## then: |
## then: |
## |
## |
## KR-21 rk= [K/(K-1)] * [1- (M*(K-M))/(K*s^2))] |
## KR-21 rk= [K/(K-1)] * [1- (M*(K-M))/(K*s^2))] |
## |
## |
############################################### |
############################################### |
Line 1683 sub compute_sequence_statistics {
|
Line 1713 sub compute_sequence_statistics {
|
my ($starttime,$endtime) = &Apache::lonstathelpers::get_time_limits(); |
my ($starttime,$endtime) = &Apache::lonstathelpers::get_time_limits(); |
# |
# |
# First compute statistics based on student scores |
# First compute statistics based on student scores |
my ($smin,$smax,$sMean,$sSTD,$scount,$sMAX) = |
my ($smin,$smax,$sMean,$sSTD,$scount,$sMAX) = |
&Apache::loncoursedata::score_stats |
&Apache::loncoursedata::score_stats |
([&Apache::lonstatistics::get_selected_sections()], |
([&Apache::lonstatistics::get_selected_sections()], |
|
[&Apache::lonstatistics::get_selected_groups()], |
$Apache::lonstatistics::enrollment_status, |
$Apache::lonstatistics::enrollment_status, |
\@Resources,$starttime,$endtime,undef); |
\@Resources,$starttime,$endtime,undef); |
$SeqStat{$symb}->{'title'} = $seq->compTitle; |
$SeqStat{$symb}->{'title'} = $seq->compTitle; |
Line 1697 sub compute_sequence_statistics {
|
Line 1728 sub compute_sequence_statistics {
|
$SeqStat{$symb}->{'max_possible'} = $sMAX; |
$SeqStat{$symb}->{'max_possible'} = $sMAX; |
# |
# |
# Compute statistics based on the number of correct problems |
# Compute statistics based on the number of correct problems |
# 'correct' is taken to mean |
# 'correct' is taken to mean |
my ($cmin,$cmax,$cMean,$cSTD,$ccount)= |
my ($cmin,$cmax,$cMean,$cSTD,$ccount)= |
&Apache::loncoursedata::count_stats |
&Apache::loncoursedata::count_stats |
([&Apache::lonstatistics::get_selected_sections()], |
([&Apache::lonstatistics::get_selected_sections()], |
|
[&Apache::lonstatistics::get_selected_groups()], |
$Apache::lonstatistics::enrollment_status, |
$Apache::lonstatistics::enrollment_status, |
\@Resources,$starttime,$endtime,undef); |
\@Resources,$starttime,$endtime,undef); |
my $K = $part_count; |
my $K = $part_count; |