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version 1.37, 2002/11/26 16:59:03
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version 1.122.2.3, 2014/03/03 20:45:05
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| # The LearningOnline Network with CAPA |
# The LearningOnline Network with CAPA |
| # (Publication Handler |
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| # |
# |
| # $Id$ |
# $Id$ |
| # |
# |
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| # http://www.lon-capa.org/ |
# http://www.lon-capa.org/ |
| # |
# |
| # (Navigate problems for statistical reports |
# (Navigate problems for statistical reports |
| # YEAR=2001 |
|
| # 5/5,7/9,7/25/1,8/11,9/13,9/26,10/5,10/9,10/22,10/26 Behrouz Minaei |
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| # 11/1,11/4,11/16,12/14,12/16,12/18,12/20,12/31 Behrouz Minaei |
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| # YEAR=2002 |
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| # 1/22,2/1,2/6,2/25,3/2,3/26,4/7,5/6 Behrouz Minaei |
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| # 5/12,5/26,7/16,7/29,8/5,10/31 Behrouz Minaei |
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| # |
# |
| ### |
############################################### |
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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; |
| |
|
| use strict; |
use strict; |
| use Apache::lonnet(); |
use Apache::lonnet; |
| |
use Apache::loncommon(); |
| use Apache::lonhtmlcommon; |
use Apache::lonhtmlcommon; |
| use Apache::loncoursedata; |
use Apache::loncoursedata; |
| use GDBM_File; |
use Apache::lonstatistics; |
| |
use LONCAPA::lonmetadata(); |
| |
use Apache::lonlocal; |
| sub InitializeProblemStatistics { |
use Spreadsheet::WriteExcel; |
| my ($cacheDB, $students, $courseID, $c, $r)=@_; |
use Apache::lonstathelpers(); |
| my %cache; |
use Time::HiRes; |
| |
use LONCAPA; |
| unless(tie(%cache,'GDBM_File',$cacheDB,&GDBM_READER(),0640)) { |
|
| $r->print('Unable to tie database1.'); |
|
| return ('ERROR', undef); |
my @StatsArray; |
| } |
my %SeqStat; # keys are symbs, values are hash refs |
| |
|
| # Remove students who don't have the proper section. |
## |
| my @sectionsSelected = split(':',$cache{'sectionsSelected'}); |
## Localization notes: |
| for(my $studentIndex=((scalar @$students)-1); $studentIndex>=0; |
## |
| $studentIndex--) { |
## in @Fields[0]->{'long_title'} is placed in Excel files and is used as the |
| my $value = $cache{$students->[$studentIndex].':section'}; |
## header for plots created with Graph.pm, both of which more than likely do |
| my $found = 0; |
## not support localization. |
| foreach (@sectionsSelected) { |
## |
| if($_ eq 'none') { |
## Additional Notes: |
| if($value eq '' || !defined($value) || $value eq ' ') { |
## Localization can be done and is done before passing the phrases |
| $found = 1; |
## to the output. |
| last; |
## This might conflict with special characters, e.g. German Umlaute or |
| } |
## chinese characters. Do not use such characters in this case. |
| } else { |
## If this failed, consider that the sequence and folder names |
| if($value eq $_) { |
## are also passed to the output and would fail the same way. |
| $found = 1; |
## |
| last; |
# |
| } |
# |
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## |
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## Description of Field attributes |
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## |
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## Attribute Required Value Meaning or Use |
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## |
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## name yes any scalar Used to uniquely identify field |
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## title yes any scalar This is what the user sees to identify |
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## the field. Passed through &mt(). |
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## long_title yes any scalar Used as graph heading and in excel |
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## output. Passed through &mt(). |
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## align no (left|right|center) HTML cell contents alignment |
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## color yes html color HTML cell background color |
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## used to visually group statistics |
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## special no (link) Indicates a link, target is name.link |
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## Currently set in &get_statistics() |
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## graphable no (yes|no) Can a bar graph of the field be |
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## produced? |
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## sortable no (yes|no) Should a sort link be put in the |
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## column header? |
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## selectable yes (yes|no) Can the column be removed from the |
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## statistics display? |
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## selected yes (yes|no) Is the column selected by default? |
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## |
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## format no sprintf format string |
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## |
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## excel_format no excel format type |
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## (see &Apache::loncommon::define_excel_formats |
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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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selectable => 'no', |
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defaultselected => 'yes', |
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}, |
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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', |
| |
selectable => 'no', |
| |
defaultselected => 'yes', |
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}, |
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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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selectable => 'no', |
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defaultselected => 'yes', |
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}, |
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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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selectable => 'no', |
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defaultselected => 'yes', |
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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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selectable => 'yes', |
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defaultselected => 'yes', |
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}, |
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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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selectable => 'yes', |
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defaultselected => 'yes', |
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}, |
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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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selectable => 'yes', |
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defaultselected => 'yes', |
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}, |
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{ name => 'min_tries', |
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title => 'Min 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 => 'Minimum Number of Tries', |
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selectable => 'yes', |
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defaultselected => 'yes', |
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}, |
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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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selectable => 'yes', |
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defaultselected => 'yes', |
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}, |
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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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selectable => 'yes', |
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defaultselected => 'yes', |
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}, |
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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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selectable => 'yes', |
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defaultselected => 'no', |
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}, |
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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 => '%4.1f',# 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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selectable => 'yes', |
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defaultselected => 'yes', |
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}, |
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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 => '%4.1f',# 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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selectable => 'yes', |
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defaultselected => 'yes', |
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}, |
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{ name => 'tries_per_correct', |
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title => 'tries/correct', |
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align => 'right', |
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color => '#FFDDDD', |
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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 => 'Tries per Correct Answer', |
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selectable => 'yes', |
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defaultselected => 'yes', |
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}, |
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{ name => 'num_wrong', |
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title => '#Wrng', |
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align => 'right', |
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color => '#FFDDDD', |
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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 => 'Number of students whose final answer is wrong', |
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selectable => 'yes', |
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defaultselected => 'yes', |
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}, |
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{ name => 'per_wrong', |
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title => '%Wrng', |
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align => 'right', |
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color => '#FFDDDD', |
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format => '%4.1f', |
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sortable => 'yes', |
| |
graphable => 'yes', |
| |
long_title => 'Percent of students whose final answer is wrong', |
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selectable => 'yes', |
| |
defaultselected => 'yes', |
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}, |
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{ name => 'deg_of_diff', |
| |
title => 'DoDiff', |
| |
align => 'right', |
| |
color => '#FFFFE6', |
| |
format => '%5.2f', |
| |
sortable => 'yes', |
| |
graphable => 'yes', |
| |
long_title => 'Degree of Difficulty'. |
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' ~[ 1 - ((#YES+#yes) / Tries) ~]', |
| |
selectable => 'yes', |
| |
defaultselected => 'yes', |
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}, |
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{ name => 'deg_of_disc', |
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title => 'DoDisc', |
| |
align => 'right', |
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color => '#FFFFE6', |
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format => '%4.2f', |
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sortable => 'yes', |
| |
graphable => 'yes', |
| |
long_title => 'Degree of Discrimination', |
| |
selectable => 'yes', |
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defaultselected => 'yes', |
| |
}, |
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## duedate included for research purposes. Commented out most of the time. |
| |
# { name => 'duedate', |
| |
# title => 'Due Date', |
| |
# align => 'left', |
| |
# color => '#FFFFFF', |
| |
# sortable => 'yes', |
| |
# graphable => 'no', |
| |
# long_title => 'Due date of resource for instructor', |
| |
# selectable => 'no', |
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# defaultselected => 'yes', |
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# }, |
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## opendate included for research purposes. Commented out most of the time. |
| |
# { name => 'opendate', |
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# title => 'Open Date', |
| |
# align => 'left', |
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# color => '#FFFFFF', |
| |
# sortable => 'yes', |
| |
# graphable => 'no', |
| |
# long_title => 'date resource became answerable', |
| |
# selectable => 'no', |
| |
# defaultselected => 'yes', |
| |
# }, |
| |
## symb included for research purposes. Commented out most of the time. |
| |
# { name => 'symb', |
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# title => 'Symb', |
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# align => 'left', |
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# color => '#FFFFFF', |
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# sortable => 'yes', |
| |
# graphable => 'no', |
| |
# long_title => 'Unique LON-CAPA identifier for problem', |
| |
# selectable => 'no', |
| |
# defaultselected => 'yes', |
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# }, |
| |
## resptypes included for research purposes. Commented out most of the time. |
| |
# { name => 'resptypes', |
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# title => 'Response Types', |
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# align => 'left', |
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# color => '#FFFFFF', |
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# sortable => 'no', |
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# graphable => 'no', |
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# long_title => 'Response Types used in this problem', |
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# selectable => 'no', |
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# defaultselected => 'yes', |
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# }, |
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## maxtries included for research purposes. Commented out most of the time. |
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# { name => 'maxtries', |
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# title => 'Maxtries', |
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# align => 'left', |
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# color => '#FFFFFF', |
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# sortable => 'no', |
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# graphable => 'no', |
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# long_title => 'Maximum number of tries', |
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# selectable => 'no', |
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# defaultselected => 'yes', |
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# }, |
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## hinttries included for research purposes. Commented out most of the time. |
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# { name => 'hinttries', |
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# title => 'hinttries', |
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# align => 'left', |
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# color => '#FFFFFF', |
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# sortable => 'no', |
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# graphable => 'no', |
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# long_title => 'Number of tries before a hint appears', |
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# selectable => 'no', |
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# defaultselected => 'yes', |
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# }, |
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# |
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## problem weight for instructor |
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{ name => 'weight', |
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title => 'weight', |
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align => 'right', |
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color => '#FFFFFF', |
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sortable => 'no', |
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graphable => 'no', |
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long_title => 'Problem weight (for instructor)', |
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selectable => 'yes', |
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defaultselected => 'yes', |
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}, |
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); |
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|
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my @SeqFields = ( |
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{ name => 'title', |
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title => 'Sequence', |
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align => 'left', |
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color => '#FFFFE6', |
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special => 'no', |
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sortable => 'no', |
| |
selectable => 'yes', |
| |
defaultselected => 'no', |
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}, |
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{ name => 'items', |
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title => '#Items', |
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align => 'right', |
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color => '#FFFFE6', |
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format => '%4d', |
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sortable => 'no', |
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graphable => 'no', |
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long_title => 'Number of Items in Sequence', |
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selectable => 'yes', |
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defaultselected => 'no', |
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}, |
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{ name => 'scoremean', |
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title => 'Score Mean', |
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align => 'right', |
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color => '#FFFFE6', |
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format => '%4.2f', |
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sortable => 'no', |
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graphable => 'no', |
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long_title => 'Mean Sequence Score', |
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selectable => 'yes', |
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defaultselected => 'no', |
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}, |
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{ name => 'scorestd', |
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title => 'Score STD', |
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align => 'right', |
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color => '#FFFFE6', |
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format => '%4.2f', |
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sortable => 'no', |
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graphable => 'no', |
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long_title => 'Standard Deviation of Sequence Scores', |
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selectable => 'yes', |
| |
defaultselected => 'no', |
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}, |
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{ name => 'scoremax', |
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title => 'Score Max', |
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align => 'right', |
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color => '#FFFFE6', |
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format => '%4.2f', |
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sortable => 'no', |
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graphable => 'no', |
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long_title => 'Maximum Sequence Score', |
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selectable => 'yes', |
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defaultselected => 'no', |
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}, |
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{ name => 'scoremin', |
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title => 'Score Min', |
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align => 'right', |
| |
color => '#FFFFE6', |
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format => '%4.2f', |
| |
sortable => 'no', |
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graphable => 'no', |
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long_title => 'Minimum Sequence Score', |
| |
selectable => 'yes', |
| |
defaultselected => 'no', |
| |
}, |
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{ name => 'scorecount', |
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title => 'Score N', |
| |
align => 'right', |
| |
color => '#FFFFE6', |
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format => '%4d', |
| |
sortable => 'no', |
| |
graphable => 'no', |
| |
long_title => 'Number of Students in score computations', |
| |
selectable => 'yes', |
| |
defaultselected => 'no', |
| |
}, |
| |
{ name => 'countmean', |
| |
title => 'Count Mean', |
| |
align => 'right', |
| |
color => '#FFFFFF', |
| |
format => '%4.2f', |
| |
sortable => 'no', |
| |
graphable => 'no', |
| |
long_title => 'Mean Sequence Score', |
| |
selectable => 'yes', |
| |
defaultselected => 'no', |
| |
}, |
| |
{ name => 'countstd', |
| |
title => 'Count STD', |
| |
align => 'right', |
| |
color => '#FFFFFF', |
| |
format => '%4.2f', |
| |
sortable => 'no', |
| |
graphable => 'no', |
| |
long_title => 'Standard Deviation of Sequence Scores', |
| |
selectable => 'yes', |
| |
defaultselected => 'no', |
| |
}, |
| |
{ name => 'countmax', |
| |
title => 'Count Max', |
| |
align => 'right', |
| |
color => '#FFFFFF', |
| |
format => '%4.2f', |
| |
sortable => 'no', |
| |
graphable => 'no', |
| |
long_title => 'Maximum Number of Correct Problems', |
| |
selectable => 'yes', |
| |
defaultselected => 'no', |
| |
}, |
| |
{ name => 'countmin', |
| |
title => 'Count Min', |
| |
align => 'right', |
| |
color => '#FFFFFF', |
| |
format => '%4.2f', |
| |
sortable => 'no', |
| |
graphable => 'no', |
| |
long_title => 'Minimum Number of Correct Problems', |
| |
selectable => 'yes', |
| |
defaultselected => 'no', |
| |
}, |
| |
{ name => 'count', |
| |
title => 'Count N', |
| |
align => 'right', |
| |
color => '#FFFFFF', |
| |
format => '%4d', |
| |
sortable => 'no', |
| |
graphable => 'no', |
| |
long_title => 'Number of Students in score computations', |
| |
selectable => 'yes', |
| |
defaultselected => 'no', |
| |
}, |
| |
{ name => 'KR-21', |
| |
title => 'KR-21', |
| |
align => 'right', |
| |
color => '#FFAAAA', |
| |
format => '%4.2f', |
| |
sortable => 'no', |
| |
graphable => 'no', |
| |
long_title => 'KR-21 reliability statistic', |
| |
selectable => 'yes', |
| |
defaultselected => 'no', |
| |
}, |
| |
); |
| |
|
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my %SelectedFields; |
| |
|
| |
sub parse_field_selection { |
| |
# |
| |
# Pull out the defaults |
| |
if (! defined($env{'form.fieldselections'})) { |
| |
$env{'form.fieldselections'} = []; |
| |
foreach my $field (@Fields) { |
| |
next if ($field->{'selectable'} ne 'yes'); |
| |
if ($field->{'defaultselected'} eq 'yes') { |
| |
push(@{$env{'form.fieldselections'}},$field->{'name'}); |
| } |
} |
| } |
} |
| if($found == 0) { |
|
| splice(@$students, $studentIndex, 1); |
|
| } |
|
| } |
|
| |
|
| my $isNotCached = 0; |
|
| my $lastStatus = (defined($cache{'StatisticsLastStatus'})) ? |
|
| $cache{'StatisticsLastStatus'} : 'Nothing'; |
|
| my $whichStudents = join(':::',sort(@$students)); |
|
| if(!defined($cache{'StatisticsCached'}) || |
|
| $lastStatus ne $cache{'Status'} || |
|
| $whichStudents ne $cache{'StatisticsWhichStudents'}) { |
|
| $isNotCached = 1; |
|
| } |
} |
| |
# |
| untie(%cache); |
# Make sure the data we are plotting is there |
| unless(tie(%cache,'GDBM_File',$cacheDB,&GDBM_WRCREAT(),0640)) { |
my %NeededFields; |
| $r->print('Unable to tie database.2'); |
if (exists($env{'form.plot'}) && $env{'form.plot'} ne '' && |
| return ('ERROR', undef); |
$env{'form.plot'} ne 'none') { |
| } |
if ($env{'form.plot'} eq 'degrees') { |
| if($isNotCached && defined($cache{'StatisticsCached'})) { |
$NeededFields{'deg_of_diff'}++; |
| my @statkeys = split(':::', $cache{'StatisticsKeys'}); |
$NeededFields{'deg_of_disc'}++; |
| delete $cache{'StatisticsKeys'}; |
} elsif ($env{'form.plot'} eq 'tries statistics') { |
| delete $cache{'StatisticsCached'}; |
$NeededFields{'mean_tries'}++; |
| foreach(@statkeys) { |
$NeededFields{'std_tries'}++; |
| delete $cache{$_}; |
$NeededFields{'problem_num'}++; |
| |
} else { |
| |
$NeededFields{$env{'form.plot'}}++; |
| } |
} |
| } |
} |
| |
# |
| untie(%cache); |
# This should not happen, but in case it does... |
| if($isNotCached) { |
if (ref($env{'form.fieldselections'}) ne 'ARRAY') { |
| &Apache::loncoursedata::DownloadStudentCourseDataSeparate($students, |
$env{'form.fieldselections'} = [$env{'form.fieldselections'}]; |
| 'true', |
} |
| $cacheDB, |
# |
| 'true', |
# Set the field data and the selected fields (for easier checking) |
| 'true', |
undef(%SelectedFields); |
| $courseID, |
foreach my $field (@Fields) { |
| $r, $c); |
if ($field->{'selectable'} ne 'yes') { |
| } |
$field->{'selected'} = 'yes'; |
| if($c->aborted()) { return ('ERROR', undef); } |
} else { |
| |
$field->{'selected'} = 'no'; |
| unless(tie(%cache,'GDBM_File',$cacheDB,&GDBM_READER(),0640)) { |
} |
| $r->print('Unable to tie database.3'); |
if (exists($NeededFields{$field->{'name'}})) { |
| return ('ERROR', undef); |
$field->{'selected'} = 'yes'; |
| |
$SelectedFields{$field->{'name'}}++; |
| |
} |
| |
foreach my $selection (@{$env{'form.fieldselections'}}) { |
| |
if ($selection eq $field->{'name'} || $selection eq 'all') { |
| |
$field->{'selected'} = 'yes'; |
| |
$SelectedFields{$field->{'name'}}++; |
| |
} |
| |
} |
| } |
} |
| my $problemData; |
# |
| if($isNotCached) { |
# Always show all the sequence statistics (for now) |
| ($problemData) = &ExtractStudentData(\%cache, $students); |
foreach my $field (@SeqFields) { |
| &CalculateStatistics($problemData, \%cache, $courseID); |
$field->{'selected'} = 'yes'; |
| } |
} |
| untie(%cache); |
return; |
| |
} |
| |
|
| unless(tie(%cache,'GDBM_File',$cacheDB,&GDBM_WRCREAT(),0640)) { |
sub field_selection_input { |
| $r->print('Unable to tie database.4'); |
my $Str = '<select name="fieldselections" multiple="multiple" size="5">'."\n"; |
| return ('ERROR', undef); |
$Str .= '<option value="all">'.&mt('all').'</option>'."\n"; |
| } |
foreach my $field (@Fields) { |
| if($isNotCached) { |
next if ($field->{'selectable'} ne 'yes'); |
| foreach(keys(%$problemData)) { |
$Str .= ' <option value="'.$field->{'name'}.'"'; |
| $cache{$_} = $problemData->{$_}; |
if ($field->{'selected'} eq 'yes') { |
| |
$Str .= ' selected="selected"'; |
| } |
} |
| $cache{'StatisticsKeys'} = join(':::', keys(%$problemData)); |
$Str .= '>'.&mt($field->{'title'}).'</option>'."\n"; |
| $cache{'StatisticsCached'} = 'true'; |
|
| $cache{'StatisticsLastStatus'} = $cache{'Status'}; |
|
| $cache{'StatisticsWhichStudents'} = $whichStudents; |
|
| } |
} |
| untie(%cache); |
$Str .= "</select>\n"; |
| |
} |
| |
|
| unless(tie(%cache,'GDBM_File',$cacheDB,&GDBM_READER(),0640)) { |
############################################### |
| $r->print('Unable to tie database.5'); |
############################################### |
| return ('ERROR', undef); |
|
| } |
|
| |
|
| my $orderedProblems = &SortProblems(\%cache, |
=pod |
| $cache{'ProblemStatisticsSort'}, |
|
| $cache{'SortProblems'}, |
|
| $cache{'ProblemStatisticsAscend'}); |
|
| untie(%cache); |
|
| |
|
| return ('OK', $orderedProblems); |
=item &CreateInterface() |
| |
|
| |
Create the main intereface for the statistics page. Allows the user to |
| |
select sections, maps, and output. |
| |
|
| |
=cut |
| |
|
| |
############################################### |
| |
############################################### |
| |
sub CreateInterface { |
| |
my ($r) = @_; |
| |
# |
| |
&parse_field_selection(); |
| |
# |
| |
my $Str = ''; |
| |
$Str .= &Apache::loncommon::start_data_table(); |
| |
$Str .= &Apache::loncommon::start_data_table_header_row(); |
| |
$Str .= '<th>'.&mt('Sections').'</th>'; |
| |
$Str .= '<th>'.&mt('Groups').'</th>'; |
| |
$Str .= '<th>'.&mt('Access Status').'</th>'; |
| |
$Str .= '<th>'.&mt('Sequences and Folders').'</th>'; |
| |
$Str .= '<th>'.&mt('Statistics').'</th>'; |
| |
$Str .= '<th>'.&mt('Plot Graph').'</th>'; |
| |
$Str .= '<th>'.&mt('Time Period').'</th>'; |
| |
$Str .= &Apache::loncommon::end_data_table_header_row(); |
| |
# |
| |
$Str .= &Apache::loncommon::start_data_table_row(); |
| |
$Str .= '<td align="center" valign="top">'."\n"; |
| |
$Str .= &Apache::lonstatistics::SectionSelect('Section','multiple',5); |
| |
$Str .= '</td><td align="center" valign="top">'; |
| |
$Str .= &Apache::lonstatistics::GroupSelect('Group','multiple',5); |
| |
$Str .= '</td><td align="center" valign="top">'; |
| |
$Str .= &Apache::lonhtmlcommon::StatusOptions(undef,undef,5); |
| |
$Str .= '</td><td align="center" valign="top">'; |
| |
# |
| |
$Str .= &Apache::lonstatistics::map_select('Maps','multiple,all',5); |
| |
$Str .= '</td><td align="center" valign="top">'; |
| |
$Str .= &field_selection_input(); |
| |
$Str .= '</td><td align="center" valign="top">'; |
| |
$Str .= &plot_dropdown(); |
| |
$Str .= "\n"; |
| |
$Str .= '</td><td align="center" valign="top">'; |
| |
$Str .= &Apache::lonstathelpers::limit_by_time_form(); |
| |
$Str .= '</td>'."\n"; |
| |
$Str .= &Apache::loncommon::end_data_table_row(); |
| |
$Str .= &Apache::loncommon::end_data_table(); |
| |
# |
| |
$Str .= '<input type="submit" name="GenerateStatistics" value="'. |
| |
&mt('Generate Statistics').'" />'; |
| |
$Str .= (' 'x10); |
| |
# |
| |
return $Str; |
| } |
} |
| |
|
| sub BuildProblemStatisticsPage { |
############################################### |
| my ($cacheDB, $students, $courseID, $c, $r)=@_; |
############################################### |
| |
|
| my @Header = ("Homework Sets Order","#Stdnts","Tries","Mod", |
=pod |
| "Mean","#YES","#yes","%Wrng","DoDiff", |
|
| "S.D.","Skew.","D.F.1st","D.F.2nd"); |
|
| my $color=&setbgcolor(0); |
|
| my %cache; |
|
| |
|
| unless(tie(%cache,'GDBM_File',$cacheDB,&GDBM_READER(),0640)) { |
=item &BuildProblemStatisticsPage() |
| $r->print('Unable to tie database.6'); |
|
| |
Main interface to problem statistics. |
| |
|
| |
=cut |
| |
|
| |
############################################### |
| |
############################################### |
| |
my $navmap; |
| |
my @sequences; |
| |
|
| |
sub clean_up { |
| |
undef($navmap); |
| |
undef(@sequences); |
| |
} |
| |
|
| |
sub BuildProblemStatisticsPage { |
| |
my ($r,$c)=@_; |
| |
undef($navmap); |
| |
undef(@sequences); |
| |
# |
| |
my %Saveable_Parameters = ('Status' => 'scalar', |
| |
'statsoutputmode' => 'scalar', |
| |
'Section' => 'array', |
| |
'Groups' => 'array', |
| |
'StudentData' => 'array', |
| |
'Maps' => 'array', |
| |
'fieldselections'=> 'array'); |
| |
&Apache::loncommon::store_course_settings('statistics', |
| |
\%Saveable_Parameters); |
| |
&Apache::loncommon::restore_course_settings('statistics', |
| |
\%Saveable_Parameters); |
| |
# |
| |
&Apache::lonstatistics::PrepareClasslist(); |
| |
# |
| |
# Clear the package variables |
| |
undef(@StatsArray); |
| |
undef(%SeqStat); |
| |
# |
| |
# Finally let the user know we are here |
| |
$r->print(&Apache::lonhtmlcommon::breadcrumbs('Overall Problem Statistics', |
| |
'Statistics_Overall_Key')); |
| |
|
| |
my $interface = &CreateInterface($r); |
| |
$r->print($interface); |
| |
$r->print('<input type="hidden" name="sortby" value="'.$env{'form.sortby'}. |
| |
'" />'); |
| |
# |
| |
my @CacheButtonHTML = |
| |
&Apache::lonstathelpers::manage_caches($r,'Statistics','stats_status'); |
| |
my $Str; |
| |
foreach my $html (@CacheButtonHTML) { |
| |
$Str.=$html.(' 'x5); |
| |
} |
| |
# |
| |
$r->print($Str); |
| |
if (! exists($env{'form.firstrun'})) { |
| |
$r->print('<p class="LC_info"><b>'. |
| |
&mt('Press "Generate Statistics" when you are ready.'). |
| |
'</b></p>'. |
| |
'<p class="LC_info">'. |
| |
&mt('It may take some time to update the student data '. |
| |
'for the first analysis. Future analysis this session '. |
| |
'will not have this delay.'). |
| |
'</p>'); |
| |
&clean_up(); |
| return; |
return; |
| } |
} |
| my $Ptr = ''; |
|
| $Ptr .= '<table border="0" cellspacing="5"><tbody>'; |
|
| $Ptr .= '<tr><td align="right"><b>Select Map</b></td>'."\n"; |
|
| $Ptr .= '<td align="left">'; |
|
| $Ptr .= &Apache::lonhtmlcommon::MapOptions(\%cache, 'Statistics', |
|
| 'Statistics'); |
|
| $Ptr .= '</td></tr>'."\n"; |
|
| $Ptr .= '<tr><td align="right"><b>Sorting Type:</b></td>'."\n"; |
|
| $Ptr .= '<td align="left">'."\n"; |
|
| $Ptr .= &Apache::lonhtmlcommon::AscendOrderOptions( |
|
| $cache{'ProblemStatisticsAscend'}, |
|
| 'ProblemStatistics', |
|
| 'Statistics'); |
|
| $Ptr .= '</td></tr>'."\n"; |
|
| $Ptr .= '<tr><td align="right"><b>Select Sections</b>'; |
|
| $Ptr .= '</td>'."\n"; |
|
| $Ptr .= '<td align="left">'."\n"; |
|
| my @sections = split(':',$cache{'sectionList'}); |
|
| my @sectionsSelected = split(':',$cache{'sectionsSelected'}); |
|
| $Ptr .= &Apache::lonhtmlcommon::MultipleSectionSelect(\@sections, |
|
| \@sectionsSelected, |
|
| 'Statistics'); |
|
| $Ptr .= '</td></tr>'."\n"; |
|
| $Ptr .= &ProblemStatisticsButtons($cache{'DisplayFormat'}, |
|
| $cache{'DisplayLegend'}, |
|
| $cache{'SortProblems'}); |
|
| $Ptr .= '</table>'; |
|
| if($cache{'DisplayLegend'} eq 'Show Legend') { |
|
| $Ptr .= &ProblemStatisticsLegend(); |
|
| } |
|
| $r->print($Ptr); |
|
| $r->rflush(); |
$r->rflush(); |
| untie(%cache); |
# |
| |
# This probably does not need to be done each time we are called, but |
| my ($result, $orderedProblems) = |
# it does not slow things down noticably. |
| &InitializeProblemStatistics($cacheDB, $students, $courseID, $c, $r); |
&Apache::loncoursedata::populate_weight_table(); |
| if($result ne 'OK') { |
# |
| |
($navmap,@sequences) = |
| |
&Apache::lonstatistics::selected_sequences_with_assessments(); |
| |
if (! ref($navmap)) { |
| |
$r->print('<div class="LC_error">'.&mt('A course-wide error occurred.').'</div>'. |
| |
'<h3>'.$navmap.'</h3>'); |
| |
&clean_up(); |
| return; |
return; |
| } |
} |
| |
if (exists($env{'form.Excel'})) { |
| unless(tie(%cache,'GDBM_File',$cacheDB,&GDBM_READER(),0640)) { |
$r->print('<p>'. |
| $r->print('Unable to tie database.6'); |
&Apache::lonstatistics::section_and_enrollment_description(). |
| return; |
'</p>'); |
| |
&Excel_output($r); |
| |
} else { |
| |
$r->print('<input type="submit" name="Excel" value="'. |
| |
&mt('Produce Excel Output').'" />'.' 'x5); |
| |
$r->rflush(); |
| |
$r->print('<p>'. |
| |
&Apache::lonstatistics::section_and_enrollment_description(). |
| |
'</p>'); |
| |
my $count = 0; |
| |
foreach my $seq (@sequences) { |
| |
my @resources = |
| |
&Apache::lonstathelpers::get_resources($navmap,$seq); |
| |
$count += scalar(@resources); |
| |
} |
| |
if ($count > 10) { |
| |
$r->print('<p>'. |
| |
&mt('Compiling statistics for [quant,_1,problem]',$count). |
| |
'</p>'); |
| |
if ($count > 30) { |
| |
$r->print('<p class="LC_info">'.&mt('This will take some time.').'</p>'); |
| |
} |
| |
$r->rflush(); |
| |
} |
| |
# |
| |
my $sortby = $env{'form.sortby'}; |
| |
$sortby = 'container' if (! defined($sortby) || $sortby =~ /^\s*$/); |
| |
my $plot = $env{'form.plot'}; |
| |
if ($plot eq '' || $plot eq 'none') { |
| |
undef($plot); |
| |
} |
| |
if ($sortby eq 'container' && ! defined($plot)) { |
| |
&output_sequence_statistics($r); |
| |
&output_html_by_sequence($r); |
| |
} else { |
| |
if (defined($plot)) { |
| |
&make_plot($r,$plot); |
| |
} |
| |
&output_html_stats($r); |
| |
&output_sequence_statistics($r); |
| |
} |
| } |
} |
| &BuildStatisticsTable(\%cache, $cache{'DisplayFormat'}, |
&clean_up(); |
| $cache{'SortProblems'}, $orderedProblems, |
|
| \@Header, $r, $color); |
|
| untie(%cache); |
|
| |
|
| return; |
return; |
| } |
} |
| |
|
| sub BuildGraphicChart { |
sub output_sequence_statistics { |
| my ($graph,$cacheDB,$courseDescription,$students,$courseID,$r,$c)=@_; |
my ($r) = @_; |
| my %cache; |
my $c=$r->connection(); |
| my $max; |
$r->print('<h2>'.&mt('Sequence Statistics'). |
| unless(tie(%cache,'GDBM_File',$cacheDB,&GDBM_READER(),0640)) { |
&Apache::loncommon::help_open_topic('Statistics_Sequence'). |
| return 'Unable to tie database.7'; |
'</h2>'); |
| |
$r->print(&Apache::loncommon::start_data_table()); |
| |
$r->print(&sequence_html_header()); |
| |
foreach my $seq (@sequences) { |
| |
last if ($c->aborted); |
| |
&compute_sequence_statistics($seq); |
| |
$r->print(&sequence_html_output($seq)); |
| } |
} |
| |
$r->print(&Apache::loncommon::end_data_table()); |
| |
$r->rflush(); |
| |
return; |
| |
} |
| |
|
| my $title = ''; |
|
| if($graph eq 'DoDiffGraph') { |
########################################################## |
| $title = 'Degree-of-Difficulty'; |
########################################################## |
| } else { |
## |
| $title = 'Wrong-Percentage'; |
## HTML output routines |
| |
## |
| |
########################################################## |
| |
########################################################## |
| |
sub output_html_by_sequence { |
| |
my ($r) = @_; |
| |
my $c = $r->connection(); |
| |
$r->print('<br />'.&html_preamble()); |
| |
# |
| |
foreach my $seq (@sequences) { |
| |
last if ($c->aborted); |
| |
$r->print("<h3>".$seq->compTitle."</h3>". |
| |
&Apache::loncommon::start_data_table(). |
| |
&Apache::loncommon::start_data_table_header_row(). |
| |
&statistics_table_header('no container'). |
| |
&Apache::loncommon::end_data_table_header_row()."\n"); |
| |
my @Data = &compute_statistics_on_sequence($seq); |
| |
foreach my $data (@Data) { |
| |
$r->print(&Apache::loncommon::start_data_table_row(). |
| |
&statistics_html_table_data($data,'no container'). |
| |
&Apache::loncommon::end_data_table_row()."\n"); |
| |
} |
| |
$r->print(&Apache::loncommon::end_data_table()."\n"); |
| |
$r->rflush(); |
| } |
} |
| |
return; |
| |
} |
| |
|
| my $currentSequence = -1; |
sub output_html_stats { |
| my $sortProblems = 'Sort Within Sequence'; |
my ($r)=@_; |
| |
&compute_all_statistics($r); |
| |
$r->print(&html_preamble()); |
| |
&sort_data($env{'form.sortby'}); |
| |
# |
| |
my $count=0; |
| |
foreach my $data (@StatsArray) { |
| |
if ($count++ % 50 == 0) { |
| |
$r->print(&Apache::loncommon::end_data_table()); |
| |
$r->print(&Apache::loncommon::start_data_table(). |
| |
&Apache::loncommon::start_data_table_row(). |
| |
&statistics_table_header(). |
| |
&Apache::loncommon::end_data_table_row()); |
| |
} |
| |
$r->print(&Apache::loncommon::start_data_table_row(). |
| |
&statistics_html_table_data($data). |
| |
&Apache::loncommon::end_data_table_row()); |
| |
} |
| |
$r->print(&Apache::loncommon::end_data_table_row()); |
| |
return; |
| |
} |
| |
|
| my ($result, $orderedProblems) = |
sub html_preamble { |
| &InitializeProblemStatistics($cacheDB, $students, $courseID, $c, $r); |
my $Str=''; |
| if($result ne 'OK') { |
$Str .= "<h2>". |
| return; |
$env{'course.'.$env{'request.course.id'}.'.description'}. |
| |
"</h2>\n"; |
| |
my ($starttime,$endtime) = &Apache::lonstathelpers::get_time_limits(); |
| |
if (defined($starttime) || defined($endtime)) { |
| |
# Inform the user what the time limits on the data are. |
| |
$Str .= '<h3>'.&mt('Statistics on submissions from [_1] to [_2]', |
| |
&Apache::lonlocal::locallocaltime($starttime), |
| |
&Apache::lonlocal::locallocaltime($endtime) |
| |
).'</h3>'; |
| } |
} |
| |
$Str .= "<p>".&mt('Compiled on [_1]', |
| |
&Apache::lonlocal::locallocaltime(time))."</p>"; |
| |
return $Str; |
| |
} |
| |
|
| my @values = (); |
|
| |
|
| foreach(@$orderedProblems) { |
############################################### |
| my ($sequence,$problem,$part)=split(':', $_); |
############################################### |
| if($cache{'StatisticsMaps'} ne 'All Maps' && |
## |
| $cache{'StatisticsMaps'} ne $cache{$sequence.':title'}) { |
## Misc HTML output routines |
| next; |
## |
| } |
############################################### |
| |
############################################### |
| if( $currentSequence == -1 || |
sub statistics_html_table_data { |
| ($sortProblems eq 'Sort Within Sequence' && |
my ($data,$options) = @_; |
| $currentSequence != $sequence)) { |
my $row = ''; |
| if($currentSequence != -1) { |
foreach my $field (@Fields) { |
| &DrawGraph(\@values,$courseDescription,$title,$max,$r); |
next if ($options =~ /no $field->{'name'}/); |
| } |
next if ($field->{'selected'} ne 'yes'); |
| if($sortProblems eq 'Sort Within Sequence') { |
$row .= '<td style="background-color:'.$field->{'color'}.'"'; |
| $r->print('<br><b>'.$cache{$sequence.':title'}.'</b>'."\n"); |
if (exists($field->{'align'})) { |
| |
$row .= ' align="'.$field->{'align'}.'"'; |
| } |
} |
| |
$row .= '>'; |
| $currentSequence = $sequence; |
if (exists($field->{'special'}) && $field->{'special'} eq 'link') { |
| @values = (); |
$row .= '<a href="'.$data->{$field->{'name'}.'.link'}.'">'; |
| $max=0; |
|
| } |
} |
| my $data = 0; |
if (exists($field->{'format'}) && $data->{$field->{'name'}} !~ /[A-Z]/i) { |
| 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,$r); |
|
| |
|
| return; |
|
| } |
} |
| |
|
| |
sub statistics_table_header { |
| sub DrawGraph { |
my ($options) = @_; |
| my ($values,$courseDescription,$title,$Max,$r)=@_; |
my $header_row; |
| my $sendValues = join(',', @$values); |
foreach my $field (@Fields) { |
| my $sendCount = scalar(@$values); |
next if ($options =~ /no $field->{'name'}/); |
| $r->print("<br>The Maximum Value is: $Max"); |
next if ($field->{'selected'} ne 'yes'); |
| if ( $Max > 1 ) { |
$header_row .= '<th>'; |
| if ($Max % 10) { |
my $header_row_text = &mt($field->{'title'}); |
| if ( int($Max) < $Max ) { |
if (exists($field->{'sortable'}) && $field->{'sortable'} eq 'yes') { |
| $Max++; |
$header_row .= |
| $Max = int($Max); |
'<a href="javascript:'. |
| } |
'document.Statistics.sortby.value='."'".$field->{'name'}."'". |
| } |
';document.Statistics.submit();">'. |
| #(10 - $Max % 10); |
$header_row_text. |
| } else { $Max = 1; } |
'</a>'; |
| |
} else { |
| my @GData = ('','Problem_number',$title,$Max,$sendCount,$sendValues); |
$header_row .= $header_row_text; |
| |
} |
| # $r->print('</form>'."\n"); |
if ($options !~ /no plots/ && |
| $r->print('<br>'."\n"); |
exists($field->{'graphable'}) && |
| $r->print('<IMG src="/cgi-bin/graph.gif?'. |
$field->{'graphable'} eq 'yes') { |
| (join('&', @GData)).'" border="1" />'); |
$header_row.=' ('; |
| # $r->print('<form>'."\n"); |
$header_row .= '<a href="javascript:'. |
| $r->print('<br>'."\n"); |
"document.Statistics.plot.value='$field->{'name'}'". |
| |
';document.Statistics.submit();">'; |
| |
$header_row .= &mt('plot').'</a>)'; |
| |
} |
| |
$header_row .= '</th>'; |
| |
} |
| |
return $header_row; |
| } |
} |
| |
|
| #---- Problem Statistics Web Page --------------------------------------- |
sub sequence_html_header { |
| |
my $Str .= &Apache::loncommon::start_data_table_header_row(); |
| sub CreateProblemStatisticsTableHeading { |
foreach my $field (@SeqFields) { |
| my ($headings,$r)=@_; |
# next if ($field->{'selected'} ne 'yes'); |
| |
$Str .= '<th bgcolor="'.$field->{'color'}.'"'; |
| my $Str=''; |
$Str .= '>'.&mt($field->{'title'}).'</th>'; |
| $Str .= '<tr>'."\n"; |
|
| $Str .= '<th bgcolor="#ffffe6">P#</th>'."\n"; |
|
| foreach(@$headings) { |
|
| $Str .= '<th bgcolor="#ffffe6">'; |
|
| $Str .= '<a href="/adm/statistics?reportSelected='; |
|
| $Str .= &Apache::lonnet::escape('Problem Statistics'); |
|
| $Str .= '&ProblemStatisticsSort='; |
|
| $Str .= &Apache::lonnet::escape($_).'">'.$_.'</a> </th>'."\n"; |
|
| } |
} |
| $Str .= "\n".'</tr>'."\n"; |
$Str .= &Apache::loncommon::end_data_table_header_row(); |
| |
|
| return $Str; |
return $Str; |
| } |
} |
| |
|
| sub BuildStatisticsTable { |
|
| my ($cache,$displayFormat,$sortProblems,$orderedProblems,$headings, |
|
| $r,$color)=@_; |
|
| |
|
| my $count = 1; |
|
| my $currentSequence = -1; |
|
| foreach(@$orderedProblems) { |
|
| my ($sequence,$problem,$part)=split(':', $_); |
|
| if($cache->{'StatisticsMaps'} ne 'All Maps' && |
|
| $cache->{'StatisticsMaps'} ne $cache->{$sequence.':title'}) { |
|
| next; |
|
| } |
|
| |
|
| if($currentSequence == -1 || |
sub sequence_html_output { |
| ($sortProblems eq 'Sort Within Sequence' && |
my ($seq) = @_; |
| $currentSequence != $sequence)) { |
my $data = $SeqStat{$seq->symb}; |
| if($displayFormat ne 'Display CSV Format') { |
my $row = &Apache::loncommon::start_data_table_row(); |
| if($currentSequence ne -1) { |
foreach my $field (@SeqFields) { |
| $r->print('</table>'); |
next if ($field->{'selected'} ne 'yes'); |
| $r->print('</td></tr></table><br>'); |
$row .= '<td bgcolor="'.$field->{'color'}.'"'; |
| } |
if (exists($field->{'align'})) { |
| if($sortProblems eq 'Sort Within Sequence') { |
$row .= ' align="'.$field->{'align'}.'"'; |
| $r->print('<b>'.$cache->{$sequence.':title'}.'</b>'); |
} |
| } |
$row .= '>'; |
| $r->print('<table border="0"><tr><td bgcolor="#777777">'."\n"); |
if (exists($field->{'format'})) { |
| $r->print('<table border="0" cellpadding="3">'."\n"); |
$row .= sprintf($field->{'format'},$data->{$field->{'name'}}); |
| $r->print(&CreateProblemStatisticsTableHeading($headings, $r)); |
} else { |
| } else { |
$row .= $data->{$field->{'name'}}; |
| if($sortProblems eq 'Sort Within Sequence') { |
|
| $r->print('"'.$cache->{$sequence.':title'}.'"'); |
|
| } |
|
| $r->print('<br>'); |
|
| } |
|
| $currentSequence = $sequence; |
|
| } |
} |
| |
$row .= '</td>'; |
| |
} |
| |
$row .= &Apache::loncommon::end_data_table_row()."\n"; |
| |
return $row; |
| |
} |
| |
|
| my $ref = '<a href="'.$cache->{$problem.':source'}. |
#################################################### |
| '" target="_blank">'.$cache->{$problem.':title'}.'</a>'; |
#################################################### |
| my $title = $cache->{$problem.':title'}; |
## |
| if($part != 0) { |
## Plotting Routines |
| $title .= ' Part '.$part; |
## |
| } |
#################################################### |
| my $source = $cache->{$problem.':source'}; |
#################################################### |
| my $tableData = join('&', $ref, $title, $source, |
sub make_plot { |
| $cache->{$_.':studentCount'}, |
my ($r,$plot) = @_; |
| $cache->{$_.':totalTries'}, |
&compute_all_statistics($r); |
| $cache->{$_.':maxTries'}, |
&sort_data($env{'form.sortby'}); |
| $cache->{$_.':mean'}, |
if ($plot eq 'degrees') { |
| $cache->{$_.':correct'}, |
°rees_plot($r); |
| $cache->{$_.':correctByOverride'}, |
} elsif ($plot eq 'tries statistics') { |
| $cache->{$_.':percentWrong'}, |
&tries_data_plot($r); |
| $cache->{$_.':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 { |
} else { |
| $r->print('<br>'); |
&make_single_stat_plot($r,$plot); |
| } |
} |
| |
|
| return; |
return; |
| } |
} |
| |
|
| sub TableRow { |
sub make_single_stat_plot { |
| my ($displayFormat,$Str,$RealIdx,$r,$color)=@_; |
my ($r,$datafield) = @_; |
| my($ref,$title,$source,$StdNo,$TotalTries,$MxTries,$Avg,$YES,$Override, |
# |
| $Wrng,$DoD,$SD,$Sk,$_D1,$_D2)=split(/\&/,$Str); |
my $title; my $yaxis; |
| my $Ptr; |
foreach my $field (@Fields) { |
| if($displayFormat eq 'Display CSV Format') { |
next if ($field->{'name'} ne $datafield); |
| $Ptr='"'.$RealIdx.'",'."\n". |
$title = &mt($field->{'long_title'}); |
| '"'.$title.'",'."\n". |
$yaxis = &mt($field->{'title'}); |
| '"'.$source.'",'."\n". |
last; |
| '"'.$StdNo.'",'."\n". |
} |
| '"'.$TotalTries.'",'."\n". |
if ($title eq '' || $yaxis eq '') { |
| '"'.$MxTries.'",'."\n". |
# datafield is something we do not know enough about to plot |
| '"'.$Avg.'",'."\n". |
$r->print('<p class="LC_warning">'. |
| '"'.$YES.'",'."\n". |
&mt('Unable to plot the requested statistic.'). |
| '"'.$Override.'",'."\n". |
'</p>'); |
| '"'.$Wrng.'",'."\n". |
return; |
| '"'.$DoD.'",'."\n". |
|
| '"'.$SD.'",'."\n". |
|
| '"'.$Sk.'",'."\n". |
|
| '"'.$_D1.'",'."\n". |
|
| '"'.$_D2.'"'."\n". |
|
| "<br>\n"; |
|
| |
|
| $r->print("\n".$Ptr); |
|
| } else { |
|
| $Ptr='<tr>'."\n". |
|
| '<td bgcolor="#ffffe6">'.$RealIdx.'</td>'."\n". |
|
| '<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"); |
|
| } |
} |
| |
# |
| |
# Build up the data sets to plot |
| |
my @Labels; |
| |
my @Data; |
| |
my $max = 1; |
| |
foreach my $data (@StatsArray) { |
| |
push(@Labels,$data->{'problem_num'}); |
| |
push(@Data,$data->{$datafield}); |
| |
if ($data->{$datafield}>$max) { |
| |
$max = $data->{$datafield}; |
| |
} |
| |
} |
| |
foreach (1,2,3,4,5,10,15,20,25,40,50,75,100,150,200,250,300,500,600,750, |
| |
1000,1500,2000,2500,3000,3500,4000,5000,7500,10000,15000,20000) { |
| |
if ($max <= $_) { |
| |
$max = $_; |
| |
last; |
| |
} |
| |
} |
| |
if ($max > 20000) { |
| |
$max = 10000*(int($max/10000)+1); |
| |
} |
| |
# |
| |
$r->print("<p>".&Apache::loncommon::DrawBarGraph($title, |
| |
&mt('Problem Number'), |
| |
$yaxis, |
| |
$max, |
| |
undef, # colors |
| |
\@Labels, |
| |
\@Data)."</p>\n"); |
| return; |
return; |
| } |
} |
| |
|
| # For loading the colored table for display or un-colored for print |
sub degrees_plot { |
| sub setbgcolor { |
my ($r)=@_; |
| my $PrintTable=shift; |
my $count = scalar(@StatsArray); |
| my %color; |
my $width = 50 + 10*$count; |
| if ($PrintTable){ |
$width = 300 if ($width < 300); |
| $color{"gb"}="#FFFFFF"; |
my $height = 300; |
| $color{"red"}="#FFFFFF"; |
my $plot = ''; |
| $color{"yellow"}="#FFFFFF"; |
my $ymax = 0; |
| $color{"green"}="#FFFFFF"; |
my $ymin = 0; |
| $color{"purple"}="#FFFFFF"; |
my @Disc; my @Diff; my @Labels; |
| } else { |
foreach my $data (@StatsArray) { |
| $color{"gb"}="#DDFFFF"; |
push(@Labels,$data->{'problem_num'}); |
| $color{"red"}="#FFDDDD"; |
my $disc = $data->{'deg_of_disc'}; |
| $color{"yellow"}="#EEFFCC"; |
my $diff = $data->{'deg_of_diff'}; |
| $color{"green"}="#DDFFDD"; |
push(@Disc,$disc); |
| $color{"purple"}="#FFDDFF"; |
push(@Diff,$diff); |
| } |
# |
| |
$ymin = $disc if ($ymin > $disc); |
| return \%color; |
$ymin = $diff if ($ymin > $diff); |
| } |
$ymax = $disc if ($ymax < $disc); |
| |
$ymax = $diff if ($ymax < $diff); |
| sub ProblemStatisticsButtons { |
} |
| my ($displayFormat, $displayLegend, $sortProblems)=@_; |
# |
| |
# Make sure we show relevant information. |
| my $Ptr = '<tr><td></td><td align="left">'; |
if ($ymin < 0) { |
| $Ptr .= '<input type="submit" name="DoDiffGraph" '; |
if (abs($ymin) < 0.05) { |
| $Ptr .= 'value="Plot Degree of Difficulty" />'."\n"; |
$ymin = 0; |
| $Ptr .= '</td><td align="left">'; |
} else { |
| $Ptr .= '<input type="submit" name="PercentWrongGraph" '; |
$ymin = -1; |
| $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"; |
|
| } |
} |
| $Ptr .= '</td><td align="left">'; |
if ($ymax > 0) { |
| $Ptr .= '<input type="submit" name="DisplayLegend" '; |
if (abs($ymax) < 0.05) { |
| if($displayLegend eq 'Show Legend') { |
$ymax = 0; |
| $Ptr .= 'value="Hide Legend" />'."\n"; |
} else { |
| } else { |
$ymax = 1; |
| $Ptr .= 'value="Show Legend" />'."\n"; |
} |
| } |
} |
| $Ptr .= '</td><td align="left">'; |
# |
| $Ptr .= '<input type="submit" name="DisplayCSVFormat" '; |
my $xmax = $Labels[-1]; |
| if($displayFormat eq 'Display CSV Format') { |
if ($xmax > 50) { |
| $Ptr .= 'value="Display Table Format" />'."\n"; |
if ($xmax % 10 != 0) { |
| |
$xmax = 10 * (int($xmax/10)+1); |
| |
} |
| } else { |
} else { |
| $Ptr .= 'value="Display CSV Format" />'."\n"; |
if ($xmax % 5 != 0) { |
| |
$xmax = 5 * (int($xmax/5)+1); |
| |
} |
| } |
} |
| $Ptr .= '</td></tr>'; |
# |
| |
my $discdata .= '<data>'.join(',',@Labels).'</data>'.$/. |
| return $Ptr; |
'<data>'.join(',',@Disc).'</data>'.$/; |
| |
# |
| |
my $diffdata .= '<data>'.join(',',@Labels).'</data>'.$/. |
| |
'<data>'.join(',',@Diff).'</data>'.$/; |
| |
# |
| |
my $title = &mt('Degree of Discrimination[_1]and Degree of Difficulty','\n'); |
| |
if ($xmax > 50) { |
| |
$title = &mt('Degree of Discrimination and Degree of Difficulty'); |
| |
} |
| |
my %lt = &Apache::lonlocal::texthash( |
| |
'alttag' => 'Degree of Discrimination and Degree of Difficulty Plot', |
| |
'xlabel' => 'Problem Number', |
| |
); |
| |
# |
| |
$plot=<<"END"; |
| |
<gnuplot |
| |
texfont="10" |
| |
fgcolor="x000000" |
| |
plottype="Cartesian" |
| |
font="large" |
| |
grid="on" |
| |
align="center" |
| |
border="on" |
| |
transparent="on" |
| |
alttag="$lt{'alttag'}" |
| |
samples="100" |
| |
bgcolor="xffffff" |
| |
height="$height" |
| |
width="$width"> |
| |
<key |
| |
pos="top right" |
| |
title="" |
| |
box="off" /> |
| |
<title>$title</title> |
| |
<axis xmin="0" ymin="$ymin" xmax="$xmax" ymax="$ymax" color="x000000" /> |
| |
<xlabel>$lt{'xlabel'}</xlabel> |
| |
<curve |
| |
linestyle="linespoints" |
| |
name="DoDisc" |
| |
pointtype="0" |
| |
color="x000000"> |
| |
$discdata |
| |
</curve> |
| |
<curve |
| |
linestyle="linespoints" |
| |
name="DoDiff" |
| |
pointtype="0" |
| |
color="xFF0000"> |
| |
$diffdata |
| |
</curve> |
| |
</gnuplot> |
| |
END |
| |
my $plotresult = |
| |
'<p>'.&Apache::lonxml::xmlparse($r,'web',$plot).'</p>'.$/; |
| |
$r->print($plotresult); |
| |
return; |
| } |
} |
| |
|
| sub ProblemStatisticsLegend { |
sub tries_data_plot { |
| my $Ptr = ''; |
my ($r)=@_; |
| $Ptr = '<table border="0">'; |
my $count = scalar(@StatsArray); |
| $Ptr .= '<tr><td>'; |
my $width = 50 + 10*$count; |
| $Ptr .= '<b>#Stdnts</b></td>'; |
$width = 300 if ($width < 300); |
| $Ptr .= '<td>Total number of students attempted the problem.'; |
my $height = 300; |
| $Ptr .= '</td></tr><tr><td>'; |
my $plot = ''; |
| $Ptr .= '<b>Tries</b></td>'; |
my @STD; my @Mean; my @Max; my @Min; |
| $Ptr .= '<td>Total number of tries for solving the problem.'; |
my @Labels; |
| $Ptr .= '</td></tr><tr><td>'; |
my $ymax = 5; |
| $Ptr .= '<b>Mod</b></td>'; |
foreach my $data (@StatsArray) { |
| $Ptr .= '<td>Largest number of tries for solving the problem by a student.'; |
my $max = $data->{'mean_tries'} + $data->{'std_tries'}; |
| $Ptr .= '</td></tr><tr><td>'; |
$ymax = $max if ($ymax < $max); |
| $Ptr .= '<b>Mean</b></td>'; |
$ymax = $max if ($ymax < $max); |
| $Ptr .= '<td>Average number of tries. [ Tries / #Stdnts ]'; |
push(@Labels,$data->{'problem_num'}); |
| $Ptr .= '</td></tr><tr><td>'; |
push(@STD,$data->{'std_tries'}); |
| $Ptr .= '<b>#YES</b></td>'; |
push(@Mean,$data->{'mean_tries'}); |
| $Ptr .= '<td>Number of students solved the problem correctly.'; |
} |
| $Ptr .= '</td></tr><tr><td>'; |
# |
| $Ptr .= '<b>#yes</b></td>'; |
# Make sure we show relevant information. |
| $Ptr .= '<td>Number of students solved the problem by override.'; |
my $xmax = $Labels[-1]; |
| $Ptr .= '</td></tr><tr><td>'; |
if ($xmax > 50) { |
| $Ptr .= '<b>%Wrong</b></td>'; |
if ($xmax % 10 != 0) { |
| $Ptr .= '<td>Percentage of students who tried to solve the problem '; |
$xmax = 10 * (int($xmax/10)+1); |
| $Ptr .= 'but is still incorrect. [ 100*((#Stdnts-(#YES+#yes))/#Stdnts) ]'; |
} |
| $Ptr .= '</td></tr><tr><td>'; |
} else { |
| $Ptr .= '<b>DoDiff</b></td>'; |
if ($xmax % 5 != 0) { |
| $Ptr .= '<td>Degree of Difficulty of the problem. '; |
$xmax = 5 * (int($xmax/5)+1); |
| $Ptr .= '[ 1 - ((#YES+#yes) / Tries) ]'; |
} |
| $Ptr .= '</td></tr><tr><td>'; |
} |
| $Ptr .= '<b>S.D.</b></td>'; |
$ymax = int($ymax)+1+2; |
| $Ptr .= '<td>Standard Deviation of the tries. '; |
# |
| $Ptr .= '[ sqrt(sum((Xi - Mean)^2)) / (#Stdnts-1) '; |
my $std_data .= '<data>'.join(',',@Labels).'</data>'.$/. |
| $Ptr .= 'where Xi denotes every student\'s tries ]'; |
'<data>'.join(',',@Mean).'</data>'.$/; |
| $Ptr .= '</td></tr><tr><td>'; |
# |
| $Ptr .= '<b>Skew.</b></td>'; |
my $std_error_data .= '<data>'.join(',',@Labels).'</data>'.$/. |
| $Ptr .= '<td>Skewness of the students tries.'; |
'<data>'.join(',',@Mean).'</data>'.$/. |
| $Ptr .= '[(sqrt( sum((Xi - Mean)^3) / #Stdnts)) / (S.D.^3)]'; |
'<data>'.join(',',@STD).'</data>'.$/; |
| $Ptr .= '</td></tr><tr><td>'; |
# |
| $Ptr .= '<b>Dis.F.</b></td>'; |
my $title = &mt('Mean and S.D. of Tries'); |
| $Ptr .= '<td>Discrimination Factor: A Standard for evaluating the '; |
if ($xmax > 30) { |
| $Ptr .= 'problem according to a Criterion<br>'; |
$title = &mt('Mean and Standard Deviation of Tries'); |
| $Ptr .= '<b>[Criterion to group students into %27 Upper Students - '; |
} |
| $Ptr .= 'and %27 Lower Students]</b><br>'; |
# |
| $Ptr .= '<b>1st Criterion</b> for Sorting the Students: '; |
my %lt = &Apache::lonlocal::texthash( |
| $Ptr .= '<b>Sum of Partial Credit Awarded / Total Number of Tries</b><br>'; |
'alttag' => 'Mean and S.D of Tries Plot', |
| $Ptr .= '<b>2nd Criterion</b> for Sorting the Students: '; |
'xlabel' => 'Problem Number', |
| $Ptr .= '<b>Total number of Correct Answers / Total Number of Tries</b>'; |
'ylabel' => 'Number of Tries', |
| $Ptr .= '</td></tr>'; |
); |
| $Ptr .= '<tr><td><b>Disc.</b></td>'; |
$plot=<<"END"; |
| $Ptr .= '<td>Number of Students had at least one discussion.'; |
<gnuplot |
| $Ptr .= '</td></tr></table>'; |
texfont="10" |
| |
fgcolor="x000000" |
| return $Ptr; |
plottype="Cartesian" |
| } |
font="large" |
| |
grid="on" |
| sub ExtractStudentData { |
align="center" |
| my ($cache, $students)=@_; |
border="on" |
| |
transparent="on" |
| my @problemList=(); |
alttag="$lt{'alttag'}" |
| my %problemData; |
samples="100" |
| foreach my $sequence (split(':', $cache->{'orderedSequences'})) { |
bgcolor="xffffff" |
| foreach my $problemID (split(':', $cache->{$sequence.':problems'})) { |
height="$height" |
| foreach my $part (split(/\:/,$cache->{$sequence.':'. |
width="$width"> |
| $problemID. |
<title>$title</title> |
| ':parts'})) { |
<axis xmin="0" ymin="0" xmax="$xmax" ymax="$ymax" color="x000000" /> |
| my $id = $sequence.':'.$problemID.':'.$part; |
<xlabel>$lt{'xlabel'}</xlabel> |
| push(@problemList, $id); |
<ylabel>$lt{'ylabel'}</ylabel> |
| my $totalTries = 0; |
<curve |
| my $totalAwarded = 0; |
linestyle="yerrorbars" |
| my $correct = 0; |
name="S.D. Tries" |
| my $correctByOverride = 0; |
pointtype="1" |
| my $studentCount = 0; |
color="x666666"> |
| my $maxTries = 0; |
$std_error_data |
| my $totalFirst = 0; |
</curve> |
| my @studentTries=(); |
<curve |
| foreach(@$students) { |
linestyle="points" |
| my $code = $cache->{"$_:$problemID:$part:code"}; |
name="Mean Tries" |
| |
pointtype="1" |
| if(defined($cache->{$_.':error'}) || $code eq ' ' || |
color="xCC4444"> |
| $cache->{"$_:$problemID:NoVersion"} eq 'true') { |
$std_data |
| next; |
</curve> |
| } |
</gnuplot> |
| |
END |
| $studentCount++; |
my $plotresult = |
| my $tries = $cache->{"$_:$problemID:$part:tries"}; |
'<p>'.&Apache::lonxml::xmlparse($r,'web',$plot).'</p>'.$/; |
| if($maxTries < $tries) { |
$r->print($plotresult); |
| $maxTries = $tries; |
return; |
| } |
} |
| $totalTries += $tries; |
|
| push(@studentTries, $tries); |
|
| |
|
| my $awarded = $cache->{"$_:$problemID:$part:awarded"}; |
|
| $totalAwarded += $awarded; |
|
| |
|
| if($code eq '*') { |
sub plot_dropdown { |
| $correct++; |
my $current = ''; |
| if($tries == 1) { |
my $title; |
| $totalFirst++; |
# |
| } |
if (defined($env{'form.plot'})) { |
| } elsif($code eq '+') { |
$current = $env{'form.plot'}; |
| $correctByOverride++; |
} |
| } |
# |
| } |
my @Additional_Plots = ( |
| |
{ graphable=>'yes', |
| |
name => 'degrees', |
| |
title => 'Difficulty Indexes' }, |
| |
{ graphable=>'yes', |
| |
name => 'tries statistics', |
| |
title => 'Tries Statistics' }); |
| |
# |
| |
my $Str= "\n".'<select name="plot" size="1">'; |
| |
$Str .= '<option name="none"></option>'."\n"; |
| |
$Str .= '<option name="none2">'.&mt('none').'</option>'."\n"; |
| |
foreach my $field (@Additional_Plots,@Fields) { |
| |
if (! exists($field->{'graphable'}) || |
| |
$field->{'graphable'} ne 'yes') { |
| |
next; |
| |
} |
| |
$Str .= '<option value="'.$field->{'name'}.'"'; |
| |
if ($field->{'name'} eq $current) { |
| |
$Str .= ' selected="selected"'; |
| |
} |
| |
$title = &mt($field->{'long_title'}); |
| |
$title = &mt($field->{'title'}) if (!$title); |
| |
$Str.= '>'.$title.'</option>'."\n"; |
| |
} |
| |
$Str .= '</select>'."\n"; |
| |
return $Str; |
| |
} |
| |
|
| my $studentTriesJoined = join(':::', @studentTries); |
############################################### |
| $problemData{$id.':sequenceTitle'} = |
############################################### |
| $cache->{$sequence.':title'}; |
## |
| $problemData{$id.':studentCount'} = $studentCount; |
## Excel output routines |
| $problemData{$id.':totalTries'} = $totalTries; |
## |
| $problemData{$id.':studentTries'} = $studentTriesJoined; |
############################################### |
| $problemData{$id.':totalAwarded'} = $totalAwarded; |
############################################### |
| $problemData{$id.':correct'} = $correct; |
sub Excel_output { |
| $problemData{$id.':correctByOverride'} = $correctByOverride; |
my ($r) = @_; |
| $problemData{$id.':wrong'} = $studentCount - |
$r->print('<h2>'.&mt('Preparing Excel Spreadsheet').'</h2>'); |
| ($correct + $correctByOverride); |
## |
| $problemData{$id.':maxTries'} = $maxTries; |
## Compute the statistics |
| $problemData{$id.':totalFirst'} = $totalFirst; |
&compute_all_statistics($r); |
| |
my $c = $r->connection; |
| |
return if ($c->aborted()); |
| |
# |
| |
my ($starttime,$endtime) = &Apache::lonstathelpers::get_time_limits(); |
| |
## |
| |
## Create the excel workbook |
| |
my ($excel_workbook,$filename,$format) = |
| |
&Apache::loncommon::create_workbook($r); |
| |
return if (! defined($excel_workbook)); |
| |
# |
| |
# Add a worksheet |
| |
my $sheetname = $env{'course.'.$env{'request.course.id'}.'.description'}; |
| |
if (length($sheetname) > 31) { |
| |
$sheetname = substr($sheetname,0,31); |
| |
} |
| |
my $excel_sheet = $excel_workbook->addworksheet( |
| |
&Apache::loncommon::clean_excel_name($sheetname)); |
| |
## |
| |
## Begin creating excel sheet |
| |
## |
| |
my ($rows_output,$cols_output) = (0,0); |
| |
# |
| |
# Put the course description in the header |
| |
$excel_sheet->write($rows_output,$cols_output++, |
| |
$env{'course.'.$env{'request.course.id'}.'.description'}, |
| |
$format->{'h1'}); |
| |
$cols_output += 3; |
| |
# |
| |
# Put a description of the sections listed |
| |
my $sectionstring = ''; |
| |
$excel_sheet->write($rows_output,$cols_output++, |
| |
&Apache::lonstatistics::section_and_enrollment_description('plaintext'), |
| |
$format->{'h3'}); |
| |
$cols_output += scalar(&Apache::lonstatistics::get_selected_sections()); |
| |
$cols_output += scalar(&Apache::lonstatistics::get_selected_groups()); |
| |
# |
| |
# Time restrictions |
| |
my $time_string; |
| |
if (defined($starttime)) { |
| |
if (defined($endtime)) { |
| |
$time_string .= &mt('Data collected from [_1] to [_2]', |
| |
&Apache::lonlocal::locallocaltime($starttime), |
| |
&Apache::lonlocal::locallocaltime($endtime)); |
| |
} else { |
| |
$time_string .= &mt('Data collected from [_1]', |
| |
&Apache::lonlocal::locallocaltime($starttime)); |
| |
} |
| |
} elsif (defined($endtime)) { |
| |
$time_string .= &mt('Data collected before [_1]', |
| |
&Apache::lonlocal::locallocaltime($endtime)); |
| |
} |
| |
if (defined($time_string)) { |
| |
$excel_sheet->write($rows_output,$cols_output++,$time_string); |
| |
$cols_output+= 5; |
| |
} |
| |
# |
| |
# Put the date in there too |
| |
$excel_sheet->write($rows_output,$cols_output++, |
| |
&mt('Compiled on [_1]',&Apache::lonlocal::locallocaltime(time))); |
| |
# |
| |
$rows_output++; |
| |
$cols_output=0; |
| |
## |
| |
## Sequence Statistics |
| |
## |
| |
&write_headers($excel_sheet,$format,\$rows_output,\$cols_output, |
| |
\@SeqFields); |
| |
foreach my $seq (@sequences) { |
| |
my $data = $SeqStat{$seq->symb}; |
| |
$cols_output=0; |
| |
foreach my $field (@SeqFields) { |
| |
next if ($field->{'selected'} ne 'yes'); |
| |
my $fieldformat = undef; |
| |
if (exists($field->{'excel_format'})) { |
| |
$fieldformat = $format->{$field->{'excel_format'}}; |
| } |
} |
| |
$excel_sheet->write($rows_output,$cols_output++, |
| |
$data->{$field->{'name'}},$fieldformat); |
| } |
} |
| |
$rows_output++; |
| |
$cols_output=0; |
| } |
} |
| |
## |
| my @upperStudents1=(); |
## Resource Statistics |
| my @lowerStudents1=(); |
## |
| my @upperStudents2=(); |
$rows_output++; |
| my @lowerStudents2=(); |
$cols_output=0; |
| my $upperCount = int(0.27*scalar(@$students)); |
&write_headers($excel_sheet,$format,\$rows_output,\$cols_output, |
| # Discriminant Factor criterion 1 |
\@Fields); |
| my $sortedStudents = &SortDivideByTries($students,$cache,':totalAwarded'); |
# |
| |
foreach my $data (@StatsArray) { |
| for(my $i=0; $i<$upperCount; $i++) { |
$cols_output=0; |
| push(@lowerStudents1, $sortedStudents->[$i]); |
foreach my $field (@Fields) { |
| push(@upperStudents1, $sortedStudents->[(scalar(@$students)-$i-1)]); |
next if ($field->{'selected'} ne 'yes'); |
| |
next if ($field->{'name'} eq 'problem_num'); |
| |
my $fieldformat = undef; |
| |
if (exists($field->{'excel_format'})) { |
| |
$fieldformat = $format->{$field->{'excel_format'}}; |
| |
} |
| |
$excel_sheet->write($rows_output,$cols_output++, |
| |
$data->{$field->{'name'}},$fieldformat); |
| |
} |
| |
$rows_output++; |
| |
$cols_output=0; |
| } |
} |
| |
# |
| |
$excel_workbook->close(); |
| |
# |
| |
# Tell the user where to get their excel file |
| |
$r->print('<br />'. |
| |
'<a href="'.$filename.'">'. |
| |
&mt('Your Excel Spreadsheet').'</a>'."\n"); |
| |
$r->rflush(); |
| |
return; |
| |
} |
| |
|
| $problemData{'studentsUpperListCriterion1'}=join(':::', @upperStudents1); |
## |
| $problemData{'studentsLowerListCriterion1'}=join(':::', @lowerStudents1); |
## &write_headers |
| |
## |
| # Discriminant Factor criterion 2 |
sub write_headers { |
| $sortedStudents = &SortDivideByTries($students, $cache, ':totalSolved'); |
my ($excel_sheet,$format,$rows_output,$cols_output,$Fields) = @_; |
| |
## |
| for(my $i=0; $i<$upperCount; $i++) { |
## First the long titles |
| push(@lowerStudents2, $sortedStudents->[$i]); |
foreach my $field (@{$Fields}) { |
| push(@upperStudents2, $sortedStudents->[(scalar(@$students)-$i-1)]); |
next if ($field->{'name'} eq 'problem_num'); |
| |
next if ($field->{'selected'} ne 'yes'); |
| |
if (exists($field->{'long_title'})) { |
| |
$excel_sheet->write($$rows_output,${$cols_output}, |
| |
$field->{'long_title'}, |
| |
$format->{'bold'}); |
| |
} else { |
| |
$excel_sheet->write($$rows_output,${$cols_output},''); |
| |
} |
| |
${$cols_output}+= 1; |
| } |
} |
| $problemData{'studentsUpperListCriterion2'}=join(':::', @upperStudents2); |
${$cols_output} =0; |
| $problemData{'studentsLowerListCriterion2'}=join(':::', @lowerStudents2); |
${$rows_output}+=1; |
| |
## |
| $problemData{'problemList'} = join(':::', @problemList); |
## Then the short titles |
| |
foreach my $field (@{$Fields}) { |
| |
next if ($field->{'selected'} ne 'yes'); |
| |
next if ($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'}, |
| |
$format->{'bold'}); |
| |
$$cols_output+=1; |
| |
} |
| |
${$cols_output} =0; |
| |
${$rows_output}+=1; |
| |
return; |
| |
} |
| |
|
| return \%problemData; |
################################################## |
| |
################################################## |
| |
## |
| |
## Statistics Gathering and Manipulation Routines |
| |
## |
| |
################################################## |
| |
################################################## |
| |
sub compute_statistics_on_sequence { |
| |
my ($seq) = @_; |
| |
my @Data; |
| |
foreach my $res (&Apache::lonstathelpers::get_resources($navmap,$seq)) { |
| |
foreach my $part (@{$res->parts}) { |
| |
next if (($res->is_survey($part)) || ($res->is_anonsurvey($part))) ; |
| |
# |
| |
# This is where all the work happens |
| |
my $data = &get_statistics($seq,$res,$part,scalar(@StatsArray)+1); |
| |
push (@Data,$data); |
| |
push (@StatsArray,$data); |
| |
} |
| |
} |
| |
return @Data; |
| } |
} |
| |
|
| sub SortDivideByTries { |
sub compute_all_statistics { |
| my ($toSort, $data, $sortOn)=@_; |
my ($r) = @_; |
| my @orderedData = sort { ($data->{$a.':totalTries'}) ? |
if (@StatsArray > 0) { |
| ($data->{$a.$sortOn}/$data->{$a.':totalTries'}):0 |
# Assume we have already computed the statistics |
| <=> |
return; |
| ($data->{$b.':totalTries'}) ? |
} |
| ($data->{$b.$sortOn}/$data->{$b.':totalTries'}):0 |
my $c = $r->connection; |
| } @$toSort; |
foreach my $seq (@sequences) { |
| |
last if ($c->aborted); |
| |
&compute_sequence_statistics($seq); |
| |
&compute_statistics_on_sequence($seq); |
| |
} |
| |
} |
| |
|
| return \@orderedData; |
sub sort_data { |
| |
my ($sortkey) = @_; |
| |
return if (! @StatsArray); |
| |
# |
| |
# Sort the data |
| |
my $sortby = undef; |
| |
foreach my $field (@Fields) { |
| |
if ($sortkey eq $field->{'name'}) { |
| |
$sortby = $field->{'name'}; |
| |
} |
| |
} |
| |
if (! defined($sortby) || $sortby eq '' || $sortby eq 'problem_num') { |
| |
$sortby = 'container'; |
| |
} |
| |
if ($sortby ne 'container') { |
| |
# $sortby is already defined, so we can charge ahead |
| |
if ($sortby =~ /^(title|part)$/i) { |
| |
# Alpha comparison |
| |
@StatsArray = sort { |
| |
lc($a->{$sortby}) cmp lc($b->{$sortby}) || |
| |
lc($a->{'title'}) cmp lc($b->{'title'}) || |
| |
lc($a->{'part'}) cmp lc($b->{'part'}); |
| |
} @StatsArray; |
| |
} else { |
| |
# Numerical comparison |
| |
@StatsArray = sort { |
| |
my $retvalue = 0; |
| |
if ($b->{$sortby} eq 'nan') { |
| |
if ($a->{$sortby} ne 'nan') { |
| |
$retvalue = -1; |
| |
} else { |
| |
$retvalue = 0; |
| |
} |
| |
} |
| |
if ($a->{$sortby} eq 'nan') { |
| |
if ($b->{$sortby} ne 'nan') { |
| |
$retvalue = 1; |
| |
} |
| |
} |
| |
if ($retvalue eq '0') { |
| |
$retvalue = $b->{$sortby} <=> $a->{$sortby} || |
| |
lc($a->{'title'}) <=> lc($b->{'title'}) || |
| |
lc($a->{'part'}) <=> lc($b->{'part'}); |
| |
} |
| |
$retvalue; |
| |
} @StatsArray; |
| |
} |
| |
} |
| |
# |
| |
# Renumber the data set |
| |
my $count; |
| |
foreach my $data (@StatsArray) { |
| |
$data->{'problem_num'} = ++$count; |
| |
} |
| |
return; |
| } |
} |
| |
|
| sub SortProblems { |
######################################################## |
| my ($problemData,$sortBy,$sortProblems,$ascend)=@_; |
######################################################## |
| |
|
| my @problems = split(':::', $problemData->{'problemList'}); |
=pod |
| if($sortBy eq "Homework Sets Order") { |
|
| return \@problems; |
|
| } |
|
| |
|
| my $data; |
=item &get_statistics() |
| |
|
| if ($sortBy eq "#Stdnts") { $data = ':studentCount'; } |
Wrapper routine from the call to loncoursedata::get_problem_statistics. |
| elsif($sortBy eq "Tries") { $data = ':totalTries'; } |
Calls lonstathelpers::get_time_limits() to limit the data set by time |
| elsif($sortBy eq "Mod") { $data = ':maxTries'; } |
and &compute_discrimination_factor |
| elsif($sortBy eq "Mean") { $data = ':mean'; } |
|
| elsif($sortBy eq "#YES") { $data = ':correct'; } |
Inputs: $sequence, $resource, $part, $problem_num |
| elsif($sortBy eq "#yes") { $data = ':correctByOverride'; } |
|
| elsif($sortBy eq "%Wrng") { $data = ':percentWrong'; } |
Returns: Hash reference with statistics data from |
| elsif($sortBy eq "DoDiff") { $data = ':degreeOfDifficulty'; } |
loncoursedata::get_problem_statistics. |
| elsif($sortBy eq "S.D.") { $data = ':standardDeviation'; } |
|
| elsif($sortBy eq "Skew.") { $data = ':skewness'; } |
=cut |
| elsif($sortBy eq "D.F.1st") { $data = ':discriminationFactor1'; } |
|
| elsif($sortBy eq "D.F.2nd") { $data = ':discriminationFactor2'; } |
######################################################## |
| else { return \@problems; } |
######################################################## |
| |
sub get_statistics { |
| |
my ($sequence,$resource,$part,$problem_num) = @_; |
| |
# |
| |
my ($starttime,$endtime) = &Apache::lonstathelpers::get_time_limits(); |
| |
my $symb = $resource->symb; |
| |
my $courseid = $env{'request.course.id'}; |
| |
# |
| |
my $data = &Apache::loncoursedata::get_problem_statistics |
| |
([&Apache::lonstatistics::get_selected_sections()], |
| |
[&Apache::lonstatistics::get_selected_groups()], |
| |
$Apache::lonstatistics::enrollment_status, |
| |
$symb,$part,$courseid,$starttime,$endtime); |
| |
$data->{'symb'} = $symb; |
| |
$data->{'part'} = $part; |
| |
$data->{'problem_num'} = $problem_num; |
| |
$data->{'container'} = $sequence->compTitle; |
| |
$data->{'title'} = $resource->compTitle; |
| |
$data->{'title.link'} = $resource->src.'?symb='. |
| |
&escape($resource->symb); |
| |
# |
| |
if ($SelectedFields{'deg_of_disc'}) { |
| |
$data->{'deg_of_disc'} = |
| |
&compute_discrimination_factor($resource,$part,$sequence); |
| |
} |
| |
# |
| |
# Store in metadata if computations were done for all students |
| |
if ($data->{'num_students'} > 1) { |
| |
my @Sections = &Apache::lonstatistics::get_selected_sections(); |
| |
my $sections = '"'.join(' ',@Sections).'"'; |
| |
$sections =~ s/&+/_/g; # Ensure no special characters |
| |
$data->{'sections'}=$sections; |
| |
$data->{'course'} = $env{'request.course.id'}; |
| |
my $urlres=(&Apache::lonnet::decode_symb($resource->symb))[2]; |
| |
my %storestats = |
| |
&LONCAPA::lonmetadata::dynamic_metadata_storage($data); |
| |
my ($dom,$user) = ($urlres=~m{^($LONCAPA::domain_re)/($LONCAPA::username_re)}); |
| |
&Apache::lonnet::put('nohist_resevaldata',\%storestats,$dom,$user); |
| |
} |
| |
# |
| |
$data->{'tries_per_correct'} = $data->{'tries'} / |
| |
($data->{'num_solved'}+0.1); |
| |
# |
| |
# Get the due date for research purposes (commented out most of the time) |
| |
# my $duedate = &Apache::lonnet::EXT('resource.'.$part.'.duedate',$symb);; |
| |
# my $opendate = &Apache::lonnet::EXT('resource.'.$part.'.opendate',$symb); |
| |
# my $maxtries = &Apache::lonnet::EXT('resource.'.$part.'.maxtries',$symb); |
| |
# my $hinttries = &Apache::lonnet::EXT('resource.'.$part.'.hinttries',$symb); |
| |
my $weight = &Apache::lonnet::EXT('resource.'.$part.'.weight',$symb); |
| |
$data->{'weight'} = $weight; |
| |
# $data->{'duedate'} = $duedate; |
| |
# $data->{'opendate'} = $opendate; |
| |
# $data->{'maxtries'} = $maxtries; |
| |
# $data->{'hinttries'} = $hinttries; |
| |
# $data->{'resptypes'} = join(',',@{$resource->{'partdata'}->{$part}->{'ResponseTypes'}}); |
| |
return $data; |
| |
} |
| |
|
| my %temp; |
############################################### |
| my @sequenceList=(); |
############################################### |
| foreach(@problems) { |
|
| my ($sequence) = split(':', $_); |
|
| |
|
| my @array=(); |
=pod |
| my $tempArray; |
|
| if(defined($temp{$sequence})) { |
|
| $tempArray = $temp{$sequence}; |
|
| } else { |
|
| push(@sequenceList, $sequence); |
|
| $tempArray = \@array; |
|
| $temp{$sequence} = $tempArray; |
|
| } |
|
| |
|
| push(@$tempArray, $_); |
=item &compute_discrimination_factor() |
| } |
|
| |
|
| my @orderedProblems; |
Inputs: $Resource, $Sequence |
| if($sortProblems eq "Sort Within Sequence") { |
|
| foreach(keys(%temp)) { |
Returns: integer between -1 and 1 |
| my $tempArray = $temp{$_}; |
|
| my @tempOrder = |
=cut |
| sort { $problemData->{$a.$data} <=> $problemData->{$b.$data} } |
|
| @$tempArray; |
############################################### |
| $temp{$_} = \@tempOrder; |
############################################### |
| } |
sub compute_discrimination_factor { |
| foreach(@sequenceList) { |
my ($resource,$part,$seq) = @_; |
| my $tempArray = $temp{$_}; |
my $symb = $resource->symb; |
| @orderedProblems = (@orderedProblems, @$tempArray); |
my @Resources; |
| } |
foreach my $res (&Apache::lonstathelpers::get_resources($navmap,$seq)){ |
| |
next if ($res->symb eq $symb); |
| |
push (@Resources,$res->symb); |
| |
} |
| |
# |
| |
# rank |
| |
my ($starttime,$endtime) = &Apache::lonstathelpers::get_time_limits(); |
| |
my $ranking = |
| |
&Apache::loncoursedata::rank_students_by_scores_on_resources |
| |
(\@Resources, |
| |
[&Apache::lonstatistics::get_selected_sections()], |
| |
[&Apache::lonstatistics::get_selected_groups()], |
| |
$Apache::lonstatistics::enrollment_status,undef, |
| |
$starttime,$endtime, $symb); |
| |
# |
| |
# compute their percent scores on the problems in the sequence, |
| |
my $number_to_grab = int(scalar(@{$ranking})/4); |
| |
my $num_students = scalar(@{$ranking}); |
| |
my @BottomSet = map { $_->[&Apache::loncoursedata::RNK_student()]; |
| |
} @{$ranking}[0..$number_to_grab]; |
| |
my @TopSet = |
| |
map { |
| |
$_->[&Apache::loncoursedata::RNK_student()]; |
| |
} @{$ranking}[-$number_to_grab..0]; |
| |
if (! @BottomSet || (@BottomSet == 1 && $BottomSet[0] eq '') || |
| |
! @TopSet || (@TopSet == 1 && $TopSet[0] eq '')) { |
| |
return 'nan'; |
| |
} |
| |
my ($bottom_sum,$bottom_max) = |
| |
&Apache::loncoursedata::get_sum_of_scores($symb,$part,\@BottomSet, |
| |
undef,$starttime,$endtime); |
| |
my ($top_sum,$top_max) = |
| |
&Apache::loncoursedata::get_sum_of_scores($symb,$part,\@TopSet, |
| |
undef,$starttime,$endtime); |
| |
my $deg_of_disc; |
| |
if ($top_max == 0 || $bottom_max==0) { |
| |
$deg_of_disc = 'nan'; |
| } else { |
} else { |
| @orderedProblems = |
$deg_of_disc = ($top_sum/$top_max) - ($bottom_sum/$bottom_max); |
| sort { $problemData->{$a.$data} <=> $problemData->{$b.$data} } |
|
| @problems; |
|
| } |
} |
| |
#&Apache::lonnet::logthis(' '.$top_sum.'/'.$top_max. |
| |
# ' - '.$bottom_sum.'/'.$bottom_max); |
| |
return $deg_of_disc; |
| |
} |
| |
|
| if($ascend eq 'Descending') { |
############################################### |
| @orderedProblems = reverse(@orderedProblems); |
############################################### |
| |
## |
| |
## Compute KR-21 |
| |
## |
| |
## To compute KR-21, you need the following information: |
| |
## |
| |
## K=the number of items in your test |
| |
## M=the mean score on the test |
| |
## s=the standard deviation of the scores on your test |
| |
## |
| |
## then: |
| |
## |
| |
## KR-21 rk= [K/(K-1)] * [1- (M*(K-M))/(K*s^2))] |
| |
## |
| |
############################################### |
| |
############################################### |
| |
sub compute_sequence_statistics { |
| |
my ($seq) = @_; |
| |
my $symb = $seq->symb; |
| |
my @Resources; |
| |
my $part_count; |
| |
foreach my $res (&Apache::lonstathelpers::get_resources($navmap,$seq)) { |
| |
push (@Resources,$res->symb); |
| |
$part_count += scalar(@{$res->parts}); |
| |
} |
| |
my ($starttime,$endtime) = &Apache::lonstathelpers::get_time_limits(); |
| |
# |
| |
# First compute statistics based on student scores |
| |
my ($smin,$smax,$sMean,$sSTD,$scount,$sMAX) = |
| |
&Apache::loncoursedata::score_stats |
| |
([&Apache::lonstatistics::get_selected_sections()], |
| |
[&Apache::lonstatistics::get_selected_groups()], |
| |
$Apache::lonstatistics::enrollment_status, |
| |
\@Resources,$starttime,$endtime,undef); |
| |
$SeqStat{$symb}->{'title'} = $seq->compTitle; |
| |
$SeqStat{$symb}->{'scoremax'} = $smax; |
| |
$SeqStat{$symb}->{'scoremin'} = $smin; |
| |
$SeqStat{$symb}->{'scoremean'} = $sMean; |
| |
$SeqStat{$symb}->{'scorestd'} = $sSTD; |
| |
$SeqStat{$symb}->{'scorecount'} = $scount; |
| |
$SeqStat{$symb}->{'max_possible'} = $sMAX; |
| |
# |
| |
# Compute statistics based on the number of correct problems |
| |
# 'correct' is taken to mean |
| |
my ($cmin,$cmax,$cMean,$cSTD,$ccount)= |
| |
&Apache::loncoursedata::count_stats |
| |
([&Apache::lonstatistics::get_selected_sections()], |
| |
[&Apache::lonstatistics::get_selected_groups()], |
| |
$Apache::lonstatistics::enrollment_status, |
| |
\@Resources,$starttime,$endtime,undef); |
| |
my $K = $part_count; |
| |
my $kr_21; |
| |
if ($K > 1 && $cSTD > 0) { |
| |
$kr_21 = ($K/($K-1)) * (1 - $cMean*($K-$cMean)/($K*$cSTD**2)); |
| |
} else { |
| |
$kr_21 = 'nan'; |
| } |
} |
| |
$SeqStat{$symb}->{'countmax'} = $cmax; |
| return \@orderedProblems; |
$SeqStat{$symb}->{'countmin'} = $cmin; |
| |
$SeqStat{$symb}->{'countstd'} = $cSTD; |
| |
$SeqStat{$symb}->{'countmean'} = $cMean; |
| |
$SeqStat{$symb}->{'count'} = $ccount; |
| |
$SeqStat{$symb}->{'items'} = $K; |
| |
$SeqStat{$symb}->{'KR-21'}=$kr_21; |
| |
return; |
| } |
} |
| |
|
| sub CalculateStatistics { |
|
| my ($data, $cache, $courseID)=@_; |
|
| |
|
| my @problems = split(':::', $data->{'problemList'}); |
|
| foreach(@problems) { |
|
| # Mean |
|
| my $mean = ($data->{$_.':studentCount'}) ? |
|
| ($data->{$_.':totalTries'} / $data->{$_.':studentCount'}) : 0; |
|
| $data->{$_.':mean'} = sprintf("%.2f", $mean); |
|
| |
|
| # %Wrong |
=pod |
| my $pw = ($data->{$_.':studentCount'}) ? |
|
| (($data->{$_.':wrong'} / $data->{$_.':studentCount'}) * 100.0) : |
|
| 100.0; |
|
| $data->{$_.':percentWrong'} = sprintf("%.1f", $pw); |
|
| |
|
| # Degree of Difficulty |
=item ProblemStatisticsLegend |
| my $dod = ($data->{$_.':totalTries'}) ? |
|
| (1 - (($data->{$_.':correct'} + $data->{$_.':correctByOverride'}) / |
|
| $data->{$_.':totalTries'})) : 0; |
|
| |
|
| $data->{$_.':degreeOfDifficulty'} = sprintf("%.2f", $dod); |
=over 4 |
| |
|
| # Factor in mean |
=item #Stdnts |
| my @studentTries = split(':::', $data->{$_.':studentTries'}); |
Total number of students attempted the problem. |
| foreach(my $index=0; $index < scalar(@studentTries); $index++) { |
|
| $studentTries[$index] -= $mean; |
|
| } |
|
| my $sumSquared = 0; |
|
| my $sumCubed = 0; |
|
| foreach(@studentTries) { |
|
| my $squared = ($_ * $_); |
|
| my $cubed = ($squared * $_); |
|
| $sumSquared += $squared; |
|
| $sumCubed += $cubed; |
|
| } |
|
| |
|
| # Standard deviation |
=item Tries |
| my $standardDeviation; |
Total number of tries for solving the problem. |
| if($data->{$_.':studentCount'} - 1 > 0) { |
|
| $standardDeviation = (sqrt($sumSquared)) / |
|
| ($data->{$_.':studentCount'} - 1); |
|
| } else { |
|
| $standardDeviation = 0.0; |
|
| } |
|
| $data->{$_.':standardDeviation'} = sprintf("%.1f", $standardDeviation); |
|
| |
|
| # Skewness |
=item Max Tries |
| my $skew; |
Largest number of tries for solving the problem by a student. |
| if($standardDeviation > 0.0999 && $data->{$_.':studentCount'} > 0) { |
|
| $skew = (((sqrt($sumSquared)) / $data->{$_.':studentCount'}) / |
|
| ($standardDeviation * |
|
| $standardDeviation * |
|
| $standardDeviation)); |
|
| } else { |
|
| $skew = 0.0; |
|
| } |
|
| |
|
| $data->{$_.':skewness'} = sprintf("%.1f", $skew); |
=item Mean |
| |
Average number of tries. [ Tries / #Stdnts ] |
| |
|
| # Discrimination Factor 1 |
=item #YES |
| my ($sequence, $problem, $part) = split(':', $_); |
Number of students solved the problem correctly. |
| |
|
| my @upper1 = split(':::', $data->{'studentsUpperListCriterion1'}); |
=item #yes |
| my @lower1 = split(':::', $data->{'studentsLowerListCriterion1'}); |
Number of students solved the problem by override. |
| |
|
| my $upper1Sum=0; |
=item %Wrong |
| foreach my $name (@upper1) { |
Percentage of students who tried to solve the problem |
| $upper1Sum += $cache->{"$name:$problem:$part:awarded"}; |
but is still incorrect. [ 100*((#Stdnts-(#YES+#yes))/#Stdnts) ] |
| } |
|
| $upper1Sum = (scalar(@upper1)) ? ($upper1Sum/(scalar(@upper1))) : 0; |
|
| |
|
| my $lower1Sum=0; |
=item DoDiff |
| foreach my $name (@lower1) { |
Degree of Difficulty of the problem. |
| $lower1Sum += $cache->{"$name:$problem:$part:awarded"}; |
[ 1 - ((#YES+#yes) / Tries) ] |
| } |
|
| $lower1Sum = (scalar(@lower1)) ? ($lower1Sum/(scalar(@lower1))) : 0; |
|
| |
|
| my $df1 = $upper1Sum - $lower1Sum; |
=item S.D. |
| $data->{$_.':discriminationFactor1'} = sprintf("%.2f", $df1); |
Standard Deviation of the tries. |
| |
[ sqrt(sum((Xi - Mean)^2)) / (#Stdnts-1) |
| |
where Xi denotes every student\'s tries ] |
| |
|
| # Discrimination Factor 2 |
=item Skew. |
| my @upper2 = split(':::', $data->{'studentsUpperListCriterion2'}); |
Skewness of the students tries. |
| my @lower2 = split(':::', $data->{'studentsLowerListCriterion2'}); |
[(sqrt( sum((Xi - Mean)^3) / #Stdnts)) / (S.D.^3)] |
| |
|
| my $upper2Sum=0; |
=item Dis.F. |
| foreach my $name (@upper2) { |
Discrimination Factor: A Standard for evaluating the |
| $upper2Sum += $cache->{"$name:$problem:$part:awarded"}; |
problem according to a Criterion<br> |
| } |
|
| $upper2Sum = (scalar(@upper2)) ? ($upper2Sum/(scalar(@upper2))) : 0; |
|
| |
|
| my $lower2Sum=0; |
=item [Criterion to group students into %27 Upper Students - |
| foreach my $name (@lower2) { |
and %27 Lower Students] |
| $lower2Sum += $cache->{"$name:$problem:$part:awarded"}; |
1st Criterion for Sorting the Students: |
| } |
Sum of Partial Credit Awarded / Total Number of Tries |
| $lower2Sum = (scalar(@lower2)) ? ($lower2Sum/(scalar(@lower2))) : 0; |
2nd Criterion for Sorting the Students: |
| |
Total number of Correct Answers / Total Number of Tries |
| |
|
| my $df2 = $upper2Sum - $lower2Sum; |
=item Disc. |
| $data->{$_.':discriminationFactor2'} = sprintf("%.2f", $df2); |
Number of Students had at least one discussion. |
| |
|
| my %storestats; |
=back |
| my $Average = ($data->{$_.':studentCount'}) ? |
|
| $data->{$_.':totalTries'}/$data->{$_.':studentCount'} : 0; |
|
| $storestats{$courseID.'___'.$cache->{$sequence.':source'}. |
|
| '___timestamp'}=time; |
|
| $storestats{$courseID.'___'.$cache->{$sequence.':source'}. |
|
| '___stdno'}=$data->{$_.':studentCount'}; |
|
| $storestats{$courseID.'___'.$cache->{$sequence.':source'}. |
|
| '___avetries'}=$Average; |
|
| $storestats{$courseID.'___'.$cache->{$sequence.':source'}. |
|
| '___difficulty'}=$data->{$_.':degreeOfDifficulty'}; |
|
| $cache->{$sequence.':source'} =~ /^(\w+)\/(\w+)/; |
|
| if($data->{$_.':studentCount'}) { |
|
| &Apache::lonnet::put('nohist_resevaldata',\%storestats,$1,$2); |
|
| } |
|
| } |
|
| |
|
| return; |
=cut |
| } |
|
| |
|
| #---- END Problem Statistics Web Page ---------------------------------------- |
############################################################ |
| |
############################################################ |
| |
|
| 1; |
1; |
| __END__ |
__END__ |
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