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version 1.20, 2002/08/13 12:21:46
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version 1.82, 2004/04/01 22:13:39
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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 |
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| # 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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| # 1/22,2/1,2/6,2/25,3/2,3/6,3/17,3/21,3/22,3/26,4/7,5/6 Behrouz Minaei |
|
| # 5/12,5/14,5/15,5/19,5/26,7/16,7/25,7/29,8/5 Behrouz Minaei |
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| # |
# |
| ### |
############################################### |
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############################################### |
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| package Apache::lonproblemstatistics; |
=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; |
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| use strict; |
use strict; |
| use Apache::lonnet(); |
use Apache::lonnet(); |
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use Apache::loncommon(); |
| use Apache::lonhtmlcommon; |
use Apache::lonhtmlcommon; |
| use Apache::loncoursedata; |
use Apache::loncoursedata; |
| use GDBM_File; |
use Apache::lonstatistics; |
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use Apache::lonlocal; |
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use Spreadsheet::WriteExcel; |
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use Apache::lonstathelpers(); |
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use Time::HiRes; |
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|
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my @StatsArray; |
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my %SeqStat; # keys are symbs, values are hash refs |
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## |
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## Localization notes: |
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## |
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## in @Fields[0]->{'long_title'} is placed in Excel files and is used as the |
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## header for plots created with Graph.pm, both of which more than likely do |
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## not support localization. |
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## |
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# |
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# |
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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. NOT translated |
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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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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', |
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selectable => 'no', |
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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 => 'Minumum 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 => '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 => 'Percent 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 => 'deg_of_diff', |
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title => 'DoDiff', |
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align => 'right', |
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color => '#FFFFE6', |
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format => '%5.2f', |
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sortable => 'yes', |
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graphable => 'yes', |
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long_title => 'Degree of Difficulty'. |
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'[ 1 - ((#YES+#yes) / Tries) ]', |
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selectable => 'yes', |
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defaultselected => 'yes', |
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}, |
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{ name => 'deg_of_disc', |
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title => 'DoDisc', |
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align => 'right', |
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color => '#FFFFE6', |
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format => '%4.2f', |
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sortable => 'yes', |
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graphable => 'yes', |
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long_title => 'Degree of Discrimination', |
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selectable => 'yes', |
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defaultselected => 'no', |
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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', |
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selectable => 'yes', |
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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', |
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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', |
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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 => 'Minumum Sequence Score', |
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selectable => 'yes', |
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defaultselected => 'no', |
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}, |
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{ name => 'scorecount', |
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title => 'Score N', |
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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 Students in score computations', |
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selectable => 'yes', |
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defaultselected => 'no', |
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}, |
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{ name => 'countmean', |
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title => 'Count Mean', |
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align => 'right', |
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color => '#FFFFFF', |
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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 => 'countstd', |
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title => 'Count STD', |
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align => 'right', |
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color => '#FFFFFF', |
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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', |
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defaultselected => 'no', |
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}, |
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{ name => 'countmax', |
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title => 'Count Max', |
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align => 'right', |
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color => '#FFFFFF', |
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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 Number of Correct Problems', |
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selectable => 'yes', |
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defaultselected => 'no', |
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}, |
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{ name => 'countmin', |
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title => 'Count Min', |
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align => 'right', |
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color => '#FFFFFF', |
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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 => 'Minumum Number of Correct Problems', |
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selectable => 'yes', |
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defaultselected => 'no', |
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}, |
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{ name => 'count', |
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title => 'Count N', |
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align => 'right', |
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color => '#FFFFFF', |
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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 Students in score computations', |
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selectable => 'yes', |
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defaultselected => 'no', |
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}, |
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{ name => 'KR-21', |
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title => 'KR-21', |
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align => 'right', |
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color => '#FFAAAA', |
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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 => 'KR-21 reliability statistic', |
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selectable => 'yes', |
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defaultselected => 'no', |
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}, |
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); |
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|
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my %SelectedFields; |
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|
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sub parse_field_selection { |
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# |
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# Pull out the defaults |
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if (! defined($ENV{'form.fieldselections'})) { |
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$ENV{'form.fieldselections'} = []; |
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foreach my $field (@Fields) { |
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next if ($field->{'selectable'} ne 'yes'); |
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if ($field->{'defaultselected'} eq 'yes') { |
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push(@{$ENV{'form.fieldselections'}},$field->{'name'}); |
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} |
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} |
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} |
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# |
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# Make sure the data we are plotting is there |
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my %NeededFields; |
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if (exists($ENV{'form.plot'}) && $ENV{'form.plot'} ne '' && |
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$ENV{'form.plot'} ne 'none') { |
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if ($ENV{'form.plot'} eq 'degrees') { |
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$NeededFields{'deg_of_diff'}++; |
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$NeededFields{'deg_of_disc'}++; |
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} elsif ($ENV{'form.plot'} eq 'tries statistics') { |
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$NeededFields{'mean_tries'}++; |
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$NeededFields{'std_tries'}++; |
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$NeededFields{'problem_num'}++; |
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} else { |
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$NeededFields{$ENV{'form.plot'}}++; |
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} |
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} |
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# |
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# This should not happen, but in case it does... |
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if (ref($ENV{'form.fieldselections'}) ne 'ARRAY') { |
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$ENV{'form.fieldselections'} = [$ENV{'form.fieldselections'}]; |
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} |
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# |
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# Set the field data and the selected fields (for easier checking) |
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undef(%SelectedFields); |
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foreach my $field (@Fields) { |
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if ($field->{'selectable'} ne 'yes') { |
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$field->{'selected'} = 'yes'; |
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} else { |
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$field->{'selected'} = 'no'; |
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} |
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if (exists($NeededFields{$field->{'name'}})) { |
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$field->{'selected'} = 'yes'; |
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$SelectedFields{$field->{'name'}}++; |
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} |
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foreach my $selection (@{$ENV{'form.fieldselections'}}) { |
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if ($selection eq $field->{'name'} || $selection eq 'all') { |
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$field->{'selected'} = 'yes'; |
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$SelectedFields{$field->{'name'}}++; |
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} |
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} |
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} |
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# |
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# Always show all the sequence statistics (for now) |
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foreach my $field (@SeqFields) { |
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$field->{'selected'} = 'yes'; |
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} |
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return; |
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} |
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|
| my $jr; |
sub field_selection_input { |
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my $Str = '<select name="fieldselections" multiple size="5">'."\n"; |
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$Str .= '<option value="all">all</option>'."\n"; |
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foreach my $field (@Fields) { |
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next if ($field->{'selectable'} ne 'yes'); |
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$Str .= ' <option value="'.$field->{'name'}.'" '; |
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if ($field->{'selected'} eq 'yes') { |
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$Str .= 'selected '; |
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} |
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$Str .= '>'.$field->{'title'}.'</option>'."\n"; |
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} |
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$Str .= "</select>\n"; |
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} |
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|
| sub BuildProblemStatisticsPage { |
############################################### |
| my ($cacheDB, $students, $courseID, $c, $r)=@_; |
############################################### |
| my %cache; |
|
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|
| $jr = $r; |
=pod |
| |
|
| unless(tie(%cache,'GDBM_File',$cacheDB,&GDBM_READER(),0640)) { |
=item &CreateInterface() |
| return '<html><body>Unable to tie database.</body></html>'; |
|
| } |
|
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| my $Ptr = ''; |
Create the main intereface for the statistics page. Allows the user to |
| $Ptr .= '<table border="0"><tbody>'; |
select sections, maps, and output. |
| $Ptr .= '<tr><td align="right"><b>Select Map</b></td>'."\n"; |
|
| $Ptr .= '<td align="left">'; |
|
| $Ptr .= &Apache::lonhtmlcommon::MapOptions(\%cache, 'ProblemStatistics', |
|
| '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( |
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| $cache{'ProblemStatisticsAscend'}, |
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| 'ProblemStatistics', |
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| 'Statistics'); |
|
| $Ptr .= '</td></tr>'."\n"; |
|
| $Ptr .= &ProblemStatisticsButtons($cache{'DisplayFormat'}, |
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| $cache{'DisplayLegend'}); |
|
| $Ptr .= '</table>'; |
|
| if($cache{'DisplayLegend'} eq 'Show Legend') { |
|
| $Ptr .= &ProblemStatisticsLegend(); |
|
| } |
|
| $r->print($Ptr); |
|
| $r->rflush(); |
|
| |
|
| untie(%cache); |
=cut |
| |
|
| &Apache::loncoursedata::DownloadStudentCourseDataSeparate($students,'true', |
############################################### |
| $cacheDB,'true', |
############################################### |
| 'true',$courseID, |
sub CreateInterface { |
| $r, $c); |
# |
| if($c->aborted()) { return; } |
&parse_field_selection(); |
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# |
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my $Str = ''; |
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$Str .= &Apache::lonhtmlcommon::breadcrumbs |
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(undef,'Overall Problem Statistics','Statistics_Overall_Key'); |
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$Str .= '<table cellspacing="5">'."\n"; |
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$Str .= '<tr>'; |
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$Str .= '<td align="center"><b>'.&mt('Sections').'</b></td>'; |
| |
$Str .= '<td align="center"><b>'.&mt('Enrollment Status').'</b></td>'; |
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$Str .= '<td align="center"><b>'.&mt('Sequences and Folders').'</b></td>'; |
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$Str .= '<td align="center"><b>'.&mt('Statistics').'</b></td>'; |
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$Str .= '<td rowspan="2">'. |
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&Apache::lonstathelpers::limit_by_time_form().'</td>'; |
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$Str .= '</tr>'."\n"; |
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# |
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$Str .= '<tr><td align="center">'."\n"; |
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$Str .= &Apache::lonstatistics::SectionSelect('Section','multiple',5); |
| |
$Str .= '</td><td align="center">'; |
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$Str .= &Apache::lonhtmlcommon::StatusOptions(undef,undef,5); |
| |
$Str .= '</td><td align="center">'; |
| |
# |
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my $only_seq_with_assessments = sub { |
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my $s=shift; |
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if ($s->{'num_assess'} < 1) { |
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return 0; |
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} else { |
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return 1; |
| |
} |
| |
}; |
| |
$Str .= &Apache::lonstatistics::MapSelect('Maps','multiple,all',5, |
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$only_seq_with_assessments); |
| |
$Str .= '</td><td>'.&field_selection_input(); |
| |
$Str .= '</td></tr>'."\n"; |
| |
$Str .= '</table>'."\n"; |
| |
$Str .= '<input type="submit" name="GenerateStatistics" value="'. |
| |
&mt('Generate Statistics').'" />'; |
| |
$Str .= ' 'x5; |
| |
$Str .= 'Plot '.&plot_dropdown().(' 'x10); |
| |
$Str .= '<input type="submit" name="ClearCache" value="'. |
| |
&mt('Clear Caches').'" />'; |
| |
$Str .= ' 'x5; |
| |
$Str .= '<input type="submit" name="UpdateCache" value="'. |
| |
&mt('Update Student Data').'" />'; |
| |
$Str .= ' 'x5; |
| |
$Str .= '<input type="submit" name="Excel" value="'. |
| |
&mt('Produce Excel Output').'" />'; |
| |
$Str .= ' 'x5; |
| |
return $Str; |
| |
} |
| |
|
| unless(tie(%cache,'GDBM_File',$cacheDB,&GDBM_READER(),0640)) { |
############################################### |
| return '<html><body>Unable to tie database.</body></html>'; |
############################################### |
| } |
|
| |
|
| my @Header = ("Homework Sets Order","#Stdnts","Tries","Mod", |
=pod |
| "Mean","#YES","#yes","%Wrng","DoDiff", |
|
| "S.D.","Skew.","D.F.1st","D.F.2nd","Disc."); |
|
| my $color=&setbgcolor(0); |
|
| |
|
| # my %Discuss=&Apache::loncoursedata::LoadDiscussion($courseID); |
=item &BuildProblemStatisticsPage() |
| # my ($upper, $lower) = &Discriminant(\%discriminant,$r); |
|
| my ($problemData) = &ExtractStudentData(\%cache, $students); |
|
| &CalculateStatistics($problemData); |
|
| &SortProblems($problemData, $cache{'ProblemStatisticsSort'}, |
|
| $cache{'ProblemStatisticsAscend'}); |
|
| #$TempCache= |
|
| &BuildStatisticsTable(\%cache, $cache{'DisplayFormat'}, |
|
| $problemData, \@Header, $r, $color); |
|
| untie(%cache); |
|
| |
|
| # foreach (keys %$TempCache) { |
Main interface to problem statistics. |
| # last if ($c->aborted()); |
|
| # if(tie(%cache,'GDBM_File',$cacheDB,&GDBM_WRCREAT(),0640)) { |
|
| # $cache{$_}=$TempCache->{$_}; |
|
| # untie(%cache); |
|
| # } |
|
| # } |
|
| |
|
| # if($c->aborted()) { return; } |
=cut |
| # untie(%cache); |
|
| |
|
| |
############################################### |
| |
############################################### |
| |
sub BuildProblemStatisticsPage { |
| |
my ($r,$c)=@_; |
| |
# |
| |
my %Saveable_Parameters = ('Status' => 'scalar', |
| |
'statsoutputmode' => 'scalar', |
| |
'Section' => '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 |
| |
my $interface = &CreateInterface(); |
| |
$r->print($interface); |
| |
$r->print('<input type="hidden" name="sortby" value="'.$ENV{'form.sortby'}. |
| |
'" />'); |
| |
# |
| |
if (! exists($ENV{'form.statsfirstcall'})) { |
| |
$r->print('<input type="hidden" name="statsfirstcall" value="yes" />'); |
| |
$r->print('<h3>'. |
| |
&mt('Press "Generate Statistics" when you are ready.'). |
| |
'</h3><p>'. |
| |
&mt('It may take some time to update the student data '. |
| |
'for the first analysis. Future analysis this session '. |
| |
' will not have this delay.'). |
| |
'</p>'); |
| |
return; |
| |
} elsif ($ENV{'form.statsfirstcall'} eq 'yes' || |
| |
exists($ENV{'form.UpdateCache'}) || |
| |
exists($ENV{'form.ClearCache'}) ) { |
| |
$r->print('<input type="hidden" name="statsfirstcall" value="no" />'); |
| |
&Apache::lonstatistics::Gather_Student_Data($r); |
| |
} else { |
| |
$r->print('<input type="hidden" name="statsfirstcall" value="no" />'); |
| |
} |
| |
$r->rflush(); |
| |
# |
| |
# This probably does not need to be done each time we are called, but |
| |
# it does not slow things down noticably. |
| |
&Apache::loncoursedata::populate_weight_table(); |
| |
# |
| |
if (exists($ENV{'form.Excel'})) { |
| |
&Excel_output($r); |
| |
} else { |
| |
my $count = 0; |
| |
foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) { |
| |
$count += $seq->{'num_assess_parts'}; |
| |
} |
| |
if ($count > 10) { |
| |
$r->print('<h2>'. |
| |
&mt('Compiling statistics for [_1] problems',$count). |
| |
'</h2>'); |
| |
if ($count > 30) { |
| |
$r->print('<h3>'.&mt('This will take some time.').'</h3>'); |
| |
} |
| |
$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($r); |
| |
} |
| |
} |
| return; |
return; |
| } |
} |
| |
|
| |
sub output_sequence_statistics { |
| |
my ($r) = @_; |
| |
my $c=$r->connection(); |
| |
$r->print('<h2>'.&mt('Sequence Statistics').'</h2>'); |
| |
$r->print('<table border="0"><tr><td bgcolor="#777777">'."\n". |
| |
'<table border="0" cellpadding="3">'."\n". |
| |
'<tr bgcolor="#FFFFE6">'); |
| |
$r->print(&sequence_html_header()); |
| |
foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) { |
| |
last if ($c->aborted); |
| |
next if ($seq->{'num_assess'} < 1); |
| |
&compute_sequence_statistics($seq); |
| |
$r->print(&sequence_html_output($seq)); |
| |
} |
| |
$r->print('</table>'); |
| |
$r->print('</table>'); |
| |
$r->rflush(); |
| |
return; |
| |
} |
| |
|
| #---- Problem Statistics Web Page --------------------------------------- |
|
| |
|
| sub CreateProblemStatisticsTableHeading { |
########################################################## |
| my ($headings,$r)=@_; |
########################################################## |
| |
## |
| |
## HTML output routines |
| |
## |
| |
########################################################## |
| |
########################################################## |
| |
sub output_html_by_sequence { |
| |
my ($r) = @_; |
| |
my $c = $r->connection(); |
| |
$r->print(&html_preamble()); |
| |
# |
| |
foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) { |
| |
last if ($c->aborted); |
| |
next if ($seq->{'num_assess'} < 1); |
| |
$r->print("<h3>".$seq->{'title'}."</h3>". |
| |
'<table border="0"><tr><td bgcolor="#777777">'."\n". |
| |
'<table border="0" cellpadding="3">'."\n". |
| |
'<tr bgcolor="#FFFFE6">'. |
| |
&statistics_table_header('no container')."</tr>\n"); |
| |
my @Data = &compute_statistics_on_sequence($seq); |
| |
foreach my $data (@Data) { |
| |
$r->print('<tr>'.&statistics_html_table_data($data, |
| |
'no container'). |
| |
"</tr>\n"); |
| |
} |
| |
$r->print('</table>'."\n".'</table>'."\n"); |
| |
$r->rflush(); |
| |
} |
| |
return; |
| |
} |
| |
|
| my $Str=''; |
sub output_html_stats { |
| $Str .= '<tr>'."\n"; |
my ($r)=@_; |
| $Str .= '<th bgcolor="#ffffe6">P#</th>'."\n"; |
&compute_all_statistics($r); |
| foreach(@$headings) { |
$r->print(&html_preamble()); |
| $Str .= '<th bgcolor="#ffffe6">'.'<a href="/adm/statistics?reportSelected='; |
&sort_data($ENV{'form.sortby'}); |
| $Str .= &Apache::lonnet::escape('Problem Statistics'); |
# |
| $Str .= '&ProblemStatisticsSort='; |
my $count=0; |
| $Str .= &Apache::lonnet::escape($_).'">'.$_.'</a> </th>'."\n"; |
foreach my $data (@StatsArray) { |
| |
if ($count++ % 50 == 0) { |
| |
$r->print("</table>\n</table>\n"); |
| |
$r->print('<table border="0"><tr><td bgcolor="#777777">'."\n". |
| |
'<table border="0" cellpadding="3">'."\n". |
| |
'<tr bgcolor="#FFFFE6">'. |
| |
'<tr bgcolor="#FFFFE6">'. |
| |
&statistics_table_header(). |
| |
"</tr>\n"); |
| |
} |
| |
$r->print('<tr>'.&statistics_html_table_data($data)."</tr>\n"); |
| } |
} |
| $Str .= "\n".'</tr>'."\n"; |
$r->print("</table>\n</table>\n"); |
| |
return; |
| |
} |
| |
|
| |
sub html_preamble { |
| |
my $Str=''; |
| |
$Str .= "<h2>". |
| |
$ENV{'course.'.$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 .= "<h3>".&mt('Compiled on [_1]', |
| |
&Apache::lonlocal::locallocaltime(time))."</h3>"; |
| return $Str; |
return $Str; |
| } |
} |
| |
|
| sub BuildStatisticsTable { |
|
| my ($cache,$displayFormat,$data,$headings,$r,$color)=@_; |
|
| |
|
| #6666666 |
############################################### |
| # my $file="/home/httpd/perl/tmp/183d.txt"; |
############################################### |
| # open(OUT, ">$file"); |
## |
| #6666666 |
## Misc HTML output routines |
| ## &Apache::lonstatistics::Create_PrgWin($r); |
## |
| ##777777 |
############################################### |
| ## my (%Activity) = &LoadActivityLog(); |
############################################### |
| ## $r->print('<script>popwin.document.popremain.remaining.value="'. |
sub statistics_html_table_data { |
| ## 'Loading Discussion...";</script>'); |
my ($data,$options) = @_; |
| ## my ($doDiffFile) = &LoadDoDiffFile(); |
my $row = ''; |
| |
foreach my $field (@Fields) { |
| ##777777 |
next if ($options =~ /no $field->{'name'}/); |
| ## $Str .= &Classify($discriminantFactor, $students); |
next if ($field->{'selected'} ne 'yes'); |
| |
$row .= '<td bgcolor="'.$field->{'color'}.'"'; |
| my %TempCache; |
if (exists($field->{'align'})) { |
| my $problems = $data->{'problemList'}; |
$row .= ' align="'.$field->{'align'}.'"'; |
| if($displayFormat ne 'Display CSV Format') { |
} |
| $r->print('<table border="0"><tr><td bgcolor="#777777">'."\n"); |
$row .= '>'; |
| $r->print('<table border="0" cellpadding="3">'."\n"); |
if (exists($field->{'special'}) && $field->{'special'} eq 'link') { |
| $r->print(&CreateProblemStatisticsTableHeading($headings, $r)); |
$row .= '<a href="'.$data->{$field->{'name'}.'.link'}.'">'; |
| } else { |
} |
| $r->print('<br>'); |
if (exists($field->{'format'})) { |
| |
$row .= sprintf($field->{'format'},$data->{$field->{'name'}}); |
| |
} else { |
| |
$row .= $data->{$field->{'name'}}; |
| |
} |
| |
if (exists($field->{'special'}) && $field->{'special'} eq 'link') { |
| |
$row.= '</a>'; |
| |
} |
| |
$row .= '</td>'; |
| } |
} |
| |
return $row; |
| my $count = 1; |
|
| foreach(@$problems) { |
|
| my ($sequence,$problem,$part)=split(':', $_); |
|
| # my $problemRef = '<a href="'.$cache->{$problem.':source'}. |
|
| # '" target="_blank">'.$cache->{$problem.':title'}.'</a>'; |
|
| |
|
| my $ref = $cache->{$problem.':title'}; |
|
| my $title = $cache->{$problem.':title'}; |
|
| my $source = 'source'; |
|
| my $tableData = join('&', $ref, $title, $source, |
|
| $data->{$_.':studentCount'}, |
|
| $data->{$_.':totalTries'}, |
|
| $data->{$_.':maxTries'}, |
|
| sprintf("%.2f", $data->{$_.':mean'}), |
|
| $data->{$_.':correct'}, |
|
| $data->{$_.':correctByOverride'}, |
|
| sprintf("%.1f", $data->{$_.':percentWrong'}), |
|
| sprintf("%.2f", $data->{$_.':degreeOfDifficulty'}), |
|
| sprintf("%.1f", $data->{$_.':standardDeviation'}), |
|
| sprintf("%.1f", $data->{$_.':skewness'}), |
|
| sprintf("%.2f", $data->{$_.':discriminationFactor1'}), |
|
| sprintf("%.2f", $data->{$_.':discriminationFactor2'}), |
|
| 0); # 0 is for discussion, need to figure out |
|
| # $TempCache{'CacheTable:'.$_}=$join; |
|
| |
|
| #6666666 |
|
| # $r->print('<br>'.$out.'&'.$DoD); |
|
| # print (OUT $out.'@'.$DoD.'&'); |
|
| #6666666 |
|
| |
|
| #check with Gerd |
|
| # $urlres=~/^(\w+)\/(\w+)/; |
|
| # if ($StdNo) { |
|
| # &Apache::lonnet::put('nohist_resevaldata',\%storestats, |
|
| # $1,$2); |
|
| # } |
|
| #-------------------------------- Row of statistical table |
|
| &TableRow($displayFormat,$tableData,$count,$r,$color); |
|
| # $GraphDat->{'GraphGif:'.($count-1)}=$DoD.':'.$Wrng; |
|
| $count++; |
|
| } |
|
| # $TempCache{'ProblemCount'}=$count; |
|
| if($cache->{'DisplayFormat'} ne 'Display CSV Format') { |
|
| $r->print('</table>'."\n"); |
|
| } |
|
| $r->print('</td></tr></table>'); |
|
| #6666666 |
|
| # close( OUT ); |
|
| #666666 |
|
| return \%TempCache; |
|
| } |
} |
| |
|
| =pod |
sub statistics_table_header { |
| sub CacheStatisticsTable { |
my ($options) = @_; |
| my ($state,$cache,$headings,$r,$color)=@_; |
my $header_row; |
| my @list = (); |
foreach my $field (@Fields) { |
| my %TempCache; |
next if ($options =~ /no $field->{'name'}/); |
| my %myHeader = reverse( %$headings ); |
next if ($field->{'selected'} ne 'yes'); |
| my $pos = $myHeader{$state}; |
$header_row .= '<th>'; |
| if ($pos > 0) {$pos++;} |
if (exists($field->{'sortable'}) && $field->{'sortable'} eq 'yes') { |
| my $p_count = $cache->{'ProblemCount'}; |
$header_row .= '<a href="javascript:'. |
| |
'document.Statistics.sortby.value='."'".$field->{'name'}."'". |
| for ( my $k=0; $k<$p_count;$k++) { |
';document.Statistics.submit();">'; |
| my $key=$cache->{'CacheTable:'.$k}; |
} |
| my @Temp=split(/\&/,$key); |
$header_row .= &mt($field->{'title'}); |
| $list[$k]=$Temp[$pos].'+'.$key; |
if ($options =~ /sortable/) { |
| } |
$header_row.= '</a>'; |
| |
} |
| if ($pos>0) { |
if ($options !~ /no plots/ && |
| @list = sort OrderedSort (@list); |
exists($field->{'graphable'}) && |
| } else { |
$field->{'graphable'} eq 'yes') { |
| @list = sort (@list); |
$header_row.=' ('; |
| |
$header_row .= '<a href="javascript:'. |
| |
"document.Statistics.plot.value='$field->{'name'}'". |
| |
';document.Statistics.submit();">'; |
| |
$header_row .= &mt('plot').'</a>)'; |
| |
} |
| |
$header_row .= '</th>'; |
| } |
} |
| my $cIdx=0; |
return $header_row; |
| |
} |
| |
|
| if ( $pos == 0 ) { |
sub sequence_html_header { |
| foreach my $sequence (split(':', $cache->{'orderedSequences'})) { |
my $Str .= '<tr>'; |
| if($cache->{'ProblemStatisticsMaps'} ne 'All Maps' && |
foreach my $field (@SeqFields) { |
| $cache->{'ProblemStatisticsMaps'} ne $cache->{$sequence.':title'}) { |
# next if ($field->{'selected'} ne 'yes'); |
| next; |
$Str .= '<th bgcolor="'.$field->{'color'}.'"'; |
| } |
$Str .= '>'.$field->{'title'}.'</th>'; |
| if ($cIdx==$p_count) { |
|
| return \%TempCache; |
|
| } |
|
| $r->print(&CreateProblemStatisticsTableHeading( |
|
| $cache->{'DisplayFormat'}, |
|
| $cache->{$sequence.':source'}, |
|
| $cache->{$sequence.':title'}, |
|
| $headings,$r)); |
|
| |
|
| my ($tar)=split(/\&/,$list[$cIdx]); |
|
| $tar=~s/\+//eg; |
|
| my ($SqOrd)=split(/\@/,$tar); |
|
| $sequence+=100; |
|
| while ($SqOrd==$sequence && $cIdx<$p_count) { |
|
| my($Pre, $Post) = split(/\+/,$list[$cIdx]); |
|
| &TableRow($cache,$Post,$cIdx,$cIdx,$r,$color,\%TempCache); |
|
| $cIdx++; |
|
| my ($tar)=split(/\&/,$list[$cIdx]); |
|
| $tar=~s/\+//eg; |
|
| ($SqOrd)=split(/\@/,$tar); |
|
| } |
|
| &CloseTable($cache,$r); |
|
| } |
|
| } |
|
| else { |
|
| $r->print(&CreateProblemStatisticsTableHeading( |
|
| $cache->{'DisplayFormat'}, |
|
| 'Sorted by: ', |
|
| $headings->{$pos-1}, |
|
| $headings,$r)); |
|
| for ( my $nIndex = 0; $nIndex < $p_count; $nIndex++ ) { |
|
| my($Pre, $Post) = split(/\+/,$list[$nIndex]); |
|
| &TableRow($cache,$Post,$nIndex,$nIndex,$r,$color,\%TempCache); |
|
| } |
|
| &CloseTable($cache,$r); |
|
| } |
} |
| |
$Str .= '</tr>'; |
| return \%TempCache; |
return $Str; |
| } |
} |
| =cut |
|
| |
|
| sub TableRow { |
|
| my ($displayFormat,$Str,$RealIdx,$r,$color)=@_; |
|
| my($ref,$title,$source,$StdNo,$TotalTries,$MxTries,$Avg,$YES,$Override, |
|
| $Wrng,$DoD,$SD,$Sk,$_D1,$_D2,$DiscNo,$Prob)=split(/\&/,$Str); |
|
| my $Ptr; |
|
| if($displayFormat eq 'Display CSV Format') { |
|
| $Ptr="\n".'<br>'. |
|
| "\n".'"'.$RealIdx.'",'. |
|
| "\n".'"'.$title.'",'. |
|
| "\n".'"'.$source.'",'. |
|
| "\n".'"'.$StdNo.'",'. |
|
| "\n".'"'.$TotalTries.'",'. |
|
| "\n".'"'.$MxTries.'",'. |
|
| "\n".'"'.$Avg.'",'. |
|
| "\n".'"'.$YES.'",'. |
|
| "\n".'"'.$Override.'",'. |
|
| "\n".'"'.$Wrng.'",'. |
|
| "\n".'"'.$DoD.'",'. |
|
| "\n".'"'.$SD.'",'. |
|
| "\n".'"'.$Sk.'",'. |
|
| "\n".'"'.$_D1.'",'. |
|
| "\n".'"'.$_D2.'"'. |
|
| "\n".'"'.$DiscNo.'"'; |
|
| |
|
| $r->print("\n".$Ptr); |
sub sequence_html_output { |
| |
my ($seq) = @_; |
| |
my $data = $SeqStat{$seq->{'symb'}}; |
| |
my $row = '<tr>'; |
| |
foreach my $field (@SeqFields) { |
| |
next if ($field->{'selected'} ne 'yes'); |
| |
$row .= '<td bgcolor="'.$field->{'color'}.'"'; |
| |
if (exists($field->{'align'})) { |
| |
$row .= ' align="'.$field->{'align'}.'"'; |
| |
} |
| |
$row .= '>'; |
| |
if (exists($field->{'format'})) { |
| |
$row .= sprintf($field->{'format'},$data->{$field->{'name'}}); |
| |
} else { |
| |
$row .= $data->{$field->{'name'}}; |
| |
} |
| |
$row .= '</td>'; |
| |
} |
| |
$row .= '</tr>'."\n"; |
| |
return $row; |
| |
} |
| |
|
| |
#################################################### |
| |
#################################################### |
| |
## |
| |
## Plotting Routines |
| |
## |
| |
#################################################### |
| |
#################################################### |
| |
sub make_plot { |
| |
my ($r,$plot) = @_; |
| |
&compute_all_statistics($r); |
| |
&sort_data($ENV{'form.sortby'}); |
| |
if ($plot eq 'degrees') { |
| |
°rees_plot($r); |
| |
} elsif ($plot eq 'tries statistics') { |
| |
&tries_data_plot($r); |
| } else { |
} else { |
| $Ptr="\n".'<tr>'. |
&make_single_stat_plot($r,$plot); |
| "\n".'<td bgcolor="#ffffe6">'.$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"}.'> '.$_D2.'</td>'. |
|
| "\n".'<td bgcolor='.$color->{"yellow"}.'> '.$DiscNo.'</td>'; |
|
| $r->print("\n".$Ptr.'</tr>' ); |
|
| } |
} |
| |
return; |
| |
} |
| |
|
| |
sub make_single_stat_plot { |
| |
my ($r,$datafield) = @_; |
| |
# |
| |
my $title; my $yaxis; |
| |
foreach my $field (@Fields) { |
| |
next if ($field->{'name'} ne $datafield); |
| |
$title = $field->{'long_title'}; |
| |
$yaxis = $field->{'title'}; |
| |
last; |
| |
} |
| |
if ($title eq '' || $yaxis eq '') { |
| |
# datafield is something we do not know enough about to plot |
| |
$r->print('<h3>'. |
| |
&mt('Unable to plot the requested statistic.'). |
| |
'</h3>'); |
| |
return; |
| |
} |
| |
# |
| |
# 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, |
| |
'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)=@_; |
# |
| |
# 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="DoDiff Graph" />'."\n"; |
$ymin = 0; |
| $Ptr .= ' '; |
} else { |
| $Ptr .= '<input type="submit" name="PercentWrongGraph" '; |
$ymin = -1; |
| $Ptr .= 'value="%Wrong Graph" />'."\n"; |
} |
| $Ptr .= '</td></tr><tr><td></td><td>'."\n"; |
} |
| $Ptr .= '<input type="submit" name="DisplayLegend" '; |
if ($ymax > 0) { |
| if($displayLegend eq 'Show Legend') { |
if (abs($ymax) < 0.05) { |
| $Ptr .= 'value="Hide Legend" />'."\n"; |
$ymax = 0; |
| } else { |
} else { |
| $Ptr .= 'value="Show Legend" />'."\n"; |
$ymax = 1; |
| |
} |
| } |
} |
| $Ptr .= ' '; |
# |
| $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 $discdata .= '<data>'.join(',',@Labels).'</data>'.$/. |
| |
'<data>'.join(',',@Disc).'</data>'.$/; |
| |
# |
| |
my $diffdata .= '<data>'.join(',',@Labels).'</data>'.$/. |
| |
'<data>'.join(',',@Diff).'</data>'.$/; |
| |
# |
| |
my $title = 'Degree of Discrimination\nand Degree of Difficulty'; |
| |
if ($xmax > 50) { |
| |
$title = 'Degree of Discrimination and Degree of Difficulty'; |
| |
} |
| |
# |
| |
$plot=<<"END"; |
| |
<gnuplot |
| |
texfont="10" |
| |
fgcolor="x000000" |
| |
plottype="Cartesian" |
| |
font="large" |
| |
grid="on" |
| |
align="center" |
| |
border="on" |
| |
transparent="on" |
| |
alttag="Degree of Discrimination and Degree of Difficulty Plot" |
| |
samples="100" |
| |
bgcolor="xffffff" |
| |
height="$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>Problem Number</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; |
| |
} |
| |
|
| return $Ptr; |
sub tries_data_plot { |
| |
my ($r)=@_; |
| |
my $count = scalar(@StatsArray); |
| |
my $width = 50 + 10*$count; |
| |
$width = 300 if ($width < 300); |
| |
my $height = 300; |
| |
my $plot = ''; |
| |
my @STD; my @Mean; my @Max; my @Min; |
| |
my @Labels; |
| |
my $ymax = 5; |
| |
foreach my $data (@StatsArray) { |
| |
my $max = $data->{'mean_tries'} + $data->{'std_tries'}; |
| |
$ymax = $max if ($ymax < $max); |
| |
$ymax = $max if ($ymax < $max); |
| |
push(@Labels,$data->{'problem_num'}); |
| |
push(@STD,$data->{'std_tries'}); |
| |
push(@Mean,$data->{'mean_tries'}); |
| |
} |
| |
# |
| |
# Make sure we show relevant information. |
| |
my $xmax = $Labels[-1]; |
| |
if ($xmax > 50) { |
| |
if ($xmax % 10 != 0) { |
| |
$xmax = 10 * (int($xmax/10)+1); |
| |
} |
| |
} else { |
| |
if ($xmax % 5 != 0) { |
| |
$xmax = 5 * (int($xmax/5)+1); |
| |
} |
| |
} |
| |
$ymax = int($ymax)+1+2; |
| |
# |
| |
my $std_data .= '<data>'.join(',',@Labels).'</data>'.$/. |
| |
'<data>'.join(',',@Mean).'</data>'.$/; |
| |
# |
| |
my $std_error_data .= '<data>'.join(',',@Labels).'</data>'.$/. |
| |
'<data>'.join(',',@Mean).'</data>'.$/. |
| |
'<data>'.join(',',@STD).'</data>'.$/; |
| |
# |
| |
my $title = 'Mean and S.D. of Tries'; |
| |
if ($xmax > 25) { |
| |
$title = 'Mean and Standard Deviation of Tries'; |
| |
} |
| |
# |
| |
$plot=<<"END"; |
| |
<gnuplot |
| |
texfont="10" |
| |
fgcolor="x000000" |
| |
plottype="Cartesian" |
| |
font="large" |
| |
grid="on" |
| |
align="center" |
| |
border="on" |
| |
transparent="on" |
| |
alttag="Mean and S.D of Tries Plot" |
| |
samples="100" |
| |
bgcolor="xffffff" |
| |
height="$height" |
| |
width="$width"> |
| |
<title>$title</title> |
| |
<axis xmin="0" ymin="0" xmax="$xmax" ymax="$ymax" color="x000000" /> |
| |
<xlabel>Problem Number</xlabel> |
| |
<ylabel>Number of Tries</ylabel> |
| |
<curve |
| |
linestyle="yerrorbars" |
| |
name="S.D. Tries" |
| |
pointtype="1" |
| |
color="x666666"> |
| |
$std_error_data |
| |
</curve> |
| |
<curve |
| |
linestyle="points" |
| |
name="Mean Tries" |
| |
pointtype="1" |
| |
color="xCC4444"> |
| |
$std_data |
| |
</curve> |
| |
</gnuplot> |
| |
END |
| |
my $plotresult = |
| |
'<p>'.&Apache::lonxml::xmlparse($r,'web',$plot).'</p>'.$/; |
| |
$r->print($plotresult); |
| |
return; |
| } |
} |
| |
|
| sub ProblemStatisticsLegend { |
sub plot_dropdown { |
| my $Ptr = ''; |
my $current = ''; |
| $Ptr = '<table border="0">'; |
# |
| $Ptr .= '<tr><td>'; |
if (defined($ENV{'form.plot'})) { |
| $Ptr .= '<b>#Stdnts</b></td>'; |
$current = $ENV{'form.plot'}; |
| $Ptr .= '<td>Total number of students attempted the problem.'; |
} |
| $Ptr .= '</td></tr><tr><td>'; |
# |
| $Ptr .= '<b>Tries</b></td>'; |
my @Additional_Plots = ( |
| $Ptr .= '<td>Total number of tries for solving the problem.'; |
{ graphable=>'yes', |
| $Ptr .= '</td></tr><tr><td>'; |
name => 'degrees', |
| $Ptr .= '<b>Mod</b></td>'; |
title => 'Difficulty Indexes' }, |
| $Ptr .= '<td>Largest number of tries for solving the problem by a student.'; |
{ graphable=>'yes', |
| $Ptr .= '</td></tr><tr><td>'; |
name => 'tries statistics', |
| $Ptr .= '<b>Mean</b></td>'; |
title => 'Tries Statistics' }); |
| $Ptr .= '<td>Average number of tries. [ Tries / #Stdnts ]'; |
# |
| $Ptr .= '</td></tr><tr><td>'; |
my $Str= "\n".'<select name="plot" size="1">'; |
| $Ptr .= '<b>#YES</b></td>'; |
$Str .= '<option name="none"></option>'."\n"; |
| $Ptr .= '<td>Number of students solved the problem correctly.'; |
$Str .= '<option name="none2">none</option>'."\n"; |
| $Ptr .= '</td></tr><tr><td>'; |
foreach my $field (@Additional_Plots,@Fields) { |
| $Ptr .= '<b>#yes</b></td>'; |
if (! exists($field->{'graphable'}) || |
| $Ptr .= '<td>Number of students solved the problem by override.'; |
$field->{'graphable'} ne 'yes') { |
| $Ptr .= '</td></tr><tr><td>'; |
|
| $Ptr .= '<b>%Wrong</b></td>'; |
|
| $Ptr .= '<td>Percentage of students who tried to solve the problem '; |
|
| $Ptr .= 'but is still incorrect. [ 100*((#Stdnts-(#YES+#yes))/#Stdnts) ]'; |
|
| $Ptr .= '</td></tr><tr><td>'; |
|
| $Ptr .= '<b>DoDiff</b></td>'; |
|
| $Ptr .= '<td>Degree of Difficulty of the problem. '; |
|
| $Ptr .= '[ 1 - ((#YES+#yes) / Tries) ]'; |
|
| $Ptr .= '</td></tr><tr><td>'; |
|
| $Ptr .= '<b>S.D.</b></td>'; |
|
| $Ptr .= '<td>Standard Deviation of the tries. '; |
|
| $Ptr .= '[ sqrt(sum((Xi - Mean)^2)) / (#Stdnts-1) '; |
|
| $Ptr .= 'where Xi denotes every student\'s tries ]'; |
|
| $Ptr .= '</td></tr><tr><td>'; |
|
| $Ptr .= '<b>Skew.</b></td>'; |
|
| $Ptr .= '<td>Skewness of the students tries.'; |
|
| $Ptr .= '[(sqrt( sum((Xi - Mean)^3) / #Stdnts)) / (S.D.^3)]'; |
|
| $Ptr .= '</td></tr><tr><td>'; |
|
| $Ptr .= '<b>Dis.F.</b></td>'; |
|
| $Ptr .= '<td>Discrimination Factor: A Standard for evaluating the '; |
|
| $Ptr .= 'problem according to a Criterion<br>'; |
|
| $Ptr .= '<b>[Applied Criterion in %27 Upper Students - '; |
|
| $Ptr .= 'Applied the same Criterion in %27 Lower Students]</b><br>'; |
|
| $Ptr .= '<b>1st Criterion</b> for Sorting the Students: '; |
|
| $Ptr .= '<b>Sum of Partial Credit Awarded / Total Number of Tries</b><br>'; |
|
| $Ptr .= '<b>2nd Criterion</b> for Sorting the Students: '; |
|
| $Ptr .= '<b>Total number of Correct Answers / Total Number of Tries</b>'; |
|
| $Ptr .= '</td></tr>'; |
|
| $Ptr .= '<tr><td><b>Disc.</b></td>'; |
|
| $Ptr .= '<td>Number of Students had at least one discussion.'; |
|
| $Ptr .= '</td></tr></table>'; |
|
| |
|
| return $Ptr; |
|
| } |
|
| |
|
| #------- Processing upperlist and lowerlist according to each problem |
|
| |
|
| sub ExtractStudentData { |
|
| my ($cache, $students)=@_; |
|
| |
|
| #$Apache::lonxml::debug=1; |
|
| #&Apache::lonhomework::showhash(%$cache); |
|
| #$Apache::lonxml::debug=0; |
|
| |
|
| my @problemList=(); |
|
| my %problemData; |
|
| foreach my $sequence (split(':', $cache->{'orderedSequences'})) { |
|
| if($cache->{'ProblemStatisticsMaps'} ne 'All Maps' && |
|
| $cache->{'ProblemStatisticsMaps'} ne $cache->{$sequence.':title'}) { |
|
| next; |
next; |
| } |
} |
| |
$Str .= '<option value="'.$field->{'name'}.'"'; |
| |
if ($field->{'name'} eq $current) { |
| |
$Str .= ' selected '; |
| |
} |
| |
$Str.= '>'.&mt($field->{'title'}).'</option>'."\n"; |
| |
} |
| |
$Str .= '</select>'."\n"; |
| |
return $Str; |
| |
} |
| |
|
| foreach my $problemID (split(':', $cache->{$sequence.':problems'})) { |
############################################### |
| foreach my $part (split(/\:/,$cache->{$sequence.':'. |
############################################### |
| $problemID. |
## |
| ':parts'})) { |
## Excel output routines |
| my $id = $sequence.':'.$problemID.':'.$part; |
## |
| push(@problemList, $id); |
############################################### |
| my $totalTries = 0; |
############################################### |
| my $totalAwarded = 0; |
sub Excel_output { |
| my $correct = 0; |
my ($r) = @_; |
| my $correctByOverride = 0; |
$r->print('<h2>'.&mt('Preparing Excel Spreadsheet').'</h2>'); |
| my $studentCount = 0; |
## |
| my $maxTries = 0; |
## Compute the statistics |
| my $totalFirst = 0; |
&compute_all_statistics($r); |
| my @studentTries=(); |
my $c = $r->connection; |
| foreach(@$students) { |
return if ($c->aborted()); |
| my $code = $cache->{"$_:$problemID:$part:code"}; |
## |
| |
## Create the excel workbook |
| if(defined($cache->{$_.':error'}) || $code eq ' ' || |
my $filename = '/prtspool/'. |
| $cache->{"$_:$problemID:NoVersion"} eq 'true') { |
$ENV{'user.name'}.'_'.$ENV{'user.domain'}.'_'. |
| next; |
time.'_'.rand(1000000000).'.xls'; |
| } |
my ($starttime,$endtime) = &Apache::lonstathelpers::get_time_limits(); |
| |
# |
| |
# Create sheet |
| |
my $excel_workbook = Spreadsheet::WriteExcel->new('/home/httpd'.$filename); |
| |
# |
| |
# Check for errors |
| |
if (! defined($excel_workbook)) { |
| |
$r->log_error("Error creating excel spreadsheet $filename: $!"); |
| |
$r->print(&mt("Problems creating new Excel file. ". |
| |
"This error has been logged. ". |
| |
"Please alert your LON-CAPA administrator.")); |
| |
return 0; |
| |
} |
| |
# |
| |
# The excel spreadsheet stores temporary data in files, then put them |
| |
# together. If needed we should be able to disable this (memory only). |
| |
# The temporary directory must be specified before calling 'addworksheet'. |
| |
# File::Temp is used to determine the temporary directory. |
| |
$excel_workbook->set_tempdir($Apache::lonnet::tmpdir); |
| |
# |
| |
# 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)); |
| |
# |
| |
my $format = &Apache::loncommon::define_excel_formats($excel_workbook); |
| |
## |
| |
## 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::lonstathelpers::sections_description |
| |
(@Apache::lonstatistics::SelectedSections), |
| |
$format->{'h3'}); |
| |
$cols_output += scalar(@Apache::lonstatistics::SelectedSections); |
| |
# |
| |
# Time restrictions |
| |
my $time_string; |
| |
if (defined($starttime)) { |
| |
# call localtime but not lonlocal:locallocaltime because excel probably |
| |
# cannot handle localized text. Probably. |
| |
$time_string .= 'Data collected from '.localtime($time_string); |
| |
if (defined($endtime)) { |
| |
$time_string .= ' to '.localtime($endtime); |
| |
} |
| |
$time_string .= '.'; |
| |
} elsif (defined($endtime)) { |
| |
# See note above about lonlocal:locallocaltime |
| |
$time_string .= 'Data collected before '.localtime($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++, |
| |
'Compiled on '.localtime(time)); |
| |
# |
| |
$rows_output++; |
| |
$cols_output=0; |
| |
## |
| |
## Sequence Statistics |
| |
## |
| |
&write_headers($excel_sheet,$format,\$rows_output,\$cols_output, |
| |
\@SeqFields); |
| |
foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) { |
| |
next if ($seq->{'num_assess'} < 1); |
| |
my $data = $SeqStat{$seq->{'symb'}}; |
| |
$cols_output=0; |
| |
foreach my $field (@SeqFields) { |
| |
next if ($field->{'selected'} ne 'yes'); |
| |
$excel_sheet->write($rows_output,$cols_output++, |
| |
$data->{$field->{'name'}}); |
| |
} |
| |
$rows_output++; |
| |
$cols_output=0; |
| |
} |
| |
## |
| |
## Resource Statistics |
| |
## |
| |
$rows_output++; |
| |
$cols_output=0; |
| |
&write_headers($excel_sheet,$format,\$rows_output,\$cols_output, |
| |
\@Fields); |
| |
# |
| |
foreach my $data (@StatsArray) { |
| |
$cols_output=0; |
| |
foreach my $field (@Fields) { |
| |
next if ($field->{'selected'} ne 'yes'); |
| |
next if ($field->{'name'} eq 'problem_num'); |
| |
$excel_sheet->write($rows_output,$cols_output++, |
| |
$data->{$field->{'name'}}); |
| |
} |
| |
$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; |
| |
} |
| |
|
| $studentCount++; |
## |
| my $tries = $cache->{"$_:$problemID:$part:tries"}; |
## &write_headers |
| if($maxTries < $tries) { |
## |
| $maxTries = $tries; |
sub write_headers { |
| } |
my ($excel_sheet,$format,$rows_output,$cols_output,$Fields) = @_; |
| $totalTries += $tries; |
## |
| push(@studentTries, $tries); |
## First the long titles |
| |
foreach my $field (@{$Fields}) { |
| |
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; |
| |
} |
| |
${$cols_output} =0; |
| |
${$rows_output}+=1; |
| |
## |
| |
## 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; |
| |
} |
| |
|
| my $awarded = $cache->{"$_:$problemID:$part:awarded"}; |
################################################## |
| $totalAwarded += $awarded; |
################################################## |
| |
## |
| |
## Statistics Gathering and Manipulation Routines |
| |
## |
| |
################################################## |
| |
################################################## |
| |
sub compute_statistics_on_sequence { |
| |
my ($seq) = @_; |
| |
my @Data; |
| |
foreach my $res (@{$seq->{'contents'}}) { |
| |
next if ($res->{'type'} ne 'assessment'); |
| |
foreach my $part (@{$res->{'parts'}}) { |
| |
# |
| |
# 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; |
| |
} |
| |
|
| if($code eq '*') { |
sub compute_all_statistics { |
| $correct++; |
my ($r) = @_; |
| if($tries == 1) { |
if (@StatsArray > 0) { |
| $totalFirst++; |
# Assume we have already computed the statistics |
| } |
return; |
| } elsif($code eq '+') { |
} |
| $correctByOverride++; |
my $c = $r->connection; |
| |
foreach my $seq (&Apache::lonstatistics::Sequences_with_Assess()) { |
| |
last if ($c->aborted); |
| |
next if ($seq->{'num_assess'} < 1); |
| |
&compute_sequence_statistics($seq); |
| |
&compute_statistics_on_sequence($seq); |
| |
} |
| |
} |
| |
|
| |
sub sort_data { |
| |
my ($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') { |
| $problemData{$id.':sequenceTitle'} = |
if ($b->{$sortby} ne 'nan') { |
| $cache->{$sequence.':title'}; |
$retvalue = 1; |
| $problemData{$id.':studentCount'} = $studentCount; |
} |
| $problemData{$id.':totalTries'} = $totalTries; |
} |
| $problemData{$id.':studentTries'} = \@studentTries; |
if ($retvalue eq '0') { |
| $problemData{$id.':totalAwarded'} = $totalAwarded; |
$retvalue = $b->{$sortby} <=> $a->{$sortby} || |
| $problemData{$id.':correct'} = $correct; |
lc($a->{'title'}) <=> lc($b->{'title'}) || |
| $problemData{$id.':correctByOverride'} = $correctByOverride; |
lc($a->{'part'}) <=> lc($b->{'part'}); |
| $problemData{$id.':wrong'} = $studentCount - |
} |
| ($correct + $correctByOverride); |
$retvalue; |
| $problemData{$id.':maxTries'} = $maxTries; |
} @StatsArray; |
| $problemData{$id.':totalFirst'} = $totalFirst; |
|
| } |
|
| } |
} |
| } |
} |
| |
# |
| |
# Renumber the data set |
| |
my $count; |
| |
foreach my $data (@StatsArray) { |
| |
$data->{'problem_num'} = ++$count; |
| |
} |
| |
return; |
| |
} |
| |
|
| $problemData{'problemList'} = \@problemList; |
######################################################## |
| # $Discussed=0; |
######################################################## |
| # if($Discuss->{"$name:$problem"}) { |
|
| # $TotDiscuss++; |
|
| # $Discussed=1; |
|
| # } |
|
| |
|
| return \%problemData; |
=pod |
| } |
|
| |
|
| sub SortProblems { |
=item &get_statistics() |
| my ($problemData,$sortBy,$ascend)=@_; |
|
| |
|
| if($sortBy eq "Homework Sets Order") { |
Wrapper routine from the call to loncoursedata::get_problem_statistics. |
| return; |
Calls lonstathelpers::get_time_limits() to limit the data set by time |
| |
and &compute_discrimination_factor |
| |
|
| |
Inputs: $sequence, $resource, $part, $problem_num |
| |
|
| |
Returns: Hash reference with statistics data from |
| |
loncoursedata::get_problem_statistics. |
| |
|
| |
=cut |
| |
|
| |
######################################################## |
| |
######################################################## |
| |
sub get_statistics { |
| |
my ($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::SelectedSections, |
| |
$Apache::lonstatistics::enrollment_status, |
| |
$symb,$part,$courseid,$starttime,$endtime); |
| |
$data->{'part'} = $part; |
| |
$data->{'problem_num'} = $problem_num; |
| |
$data->{'container'} = $sequence->{'title'}; |
| |
$data->{'title'} = $resource->{'title'}; |
| |
$data->{'title.link'} = $resource->{'src'}.'?symb='. |
| |
&Apache::lonnet::escape($resource->{'symb'}); |
| |
# |
| |
if ($SelectedFields{'deg_of_disc'}) { |
| |
$data->{'deg_of_disc'} = |
| |
&compute_discrimination_factor($resource,$part,$sequence); |
| } |
} |
| |
return $data; |
| |
} |
| |
|
| |
############################################### |
| |
############################################### |
| |
|
| my $data; |
=pod |
| |
|
| |
=item &compute_discrimination_factor() |
| |
|
| |
Inputs: $Resource, $Sequence |
| |
|
| |
Returns: integer between -1 and 1 |
| |
|
| |
=cut |
| |
|
| if ($sortBy eq "#Stdnts") { $data = ':studentCount'; } |
############################################### |
| elsif($sortBy eq "Tries") { $data = ':totalTries'; } |
############################################### |
| elsif($sortBy eq "Mod") { $data = ':maxTries'; } |
sub compute_discrimination_factor { |
| elsif($sortBy eq "Mean") { $data = ':mean'; } |
my ($resource,$part,$sequence) = @_; |
| elsif($sortBy eq "#YES") { $data = ':correct'; } |
my @Resources; |
| elsif($sortBy eq "#yes") { $data = ':correctByOverride'; } |
foreach my $res (@{$sequence->{'contents'}}) { |
| elsif($sortBy eq "%Wrng") { $data = ':percentWrong'; } |
next if ($res->{'symb'} eq $resource->{'symb'}); |
| elsif($sortBy eq "DoDiff") { $data = ':degreeOfDifficulty'; } |
push (@Resources,$res->{'symb'}); |
| elsif($sortBy eq "S.D.") { $data = ':standardDeviation'; } |
} |
| elsif($sortBy eq "Skew.") { $data = ':skewness'; } |
# |
| elsif($sortBy eq "D.F.1st") { $data = ':discriminantFactor1'; } |
# rank |
| elsif($sortBy eq "D.F.2nd") { $data = ':discriminantFactor2'; } |
my $ranking = |
| elsif($sortBy eq "Disc.") { $data = ''; } |
&Apache::loncoursedata::rank_students_by_scores_on_resources |
| else { return; } |
(\@Resources, |
| |
\@Apache::lonstatistics::SelectedSections, |
| my $problems = $problemData->{'problemList'}; |
$Apache::lonstatistics::enrollment_status,undef); |
| my @orderedProblems = |
# |
| sort { $problemData->{$a.$data} <=> $problemData->{$b.$data} } |
# compute their percent scores on the problems in the sequence, |
| @$problems; |
my $number_to_grab = int(scalar(@{$ranking})/4); |
| if($ascend eq 'Descending') { |
my $num_students = scalar(@{$ranking}); |
| @orderedProblems = reverse(@orderedProblems); |
my @BottomSet = map { $_->[&Apache::loncoursedata::RNK_student()]; |
| } |
} @{$ranking}[0..$number_to_grab]; |
| |
my @TopSet = |
| $problemData->{'problemList'} = \@orderedProblems; |
map { |
| |
$_->[&Apache::loncoursedata::RNK_student()]; |
| return; |
} @{$ranking}[($num_students-$number_to_grab)..($num_students-1)]; |
| } |
my ($bottom_sum,$bottom_max) = |
| |
&Apache::loncoursedata::get_sum_of_scores($resource,$part,\@BottomSet); |
| sub CalculateStatistics { |
my ($top_sum,$top_max) = |
| my ($data)=@_; |
&Apache::loncoursedata::get_sum_of_scores($resource,$part,\@TopSet); |
| |
my $deg_of_disc; |
| my $problems = $data->{'problemList'}; |
if ($top_max == 0 || $bottom_max==0) { |
| foreach(@$problems) { |
$deg_of_disc = 'nan'; |
| # Mean |
} else { |
| $data->{$_.':mean'} = ($data->{$_.':studentCount'}) ? |
$deg_of_disc = ($top_sum/$top_max) - ($bottom_sum/$bottom_max); |
| ($data->{$_.':totalTries'} / $data->{$_.':studentCount'}) : 0; |
|
| |
|
| # %Wrong |
|
| $data->{$_.':percentWrong'} = ($data->{$_.':studentCount'}) ? |
|
| (($data->{$_.':wrong'} / $data->{$_.':studentCount'}) * 100.0) : |
|
| 100.0; |
|
| |
|
| # Degree of Difficulty |
|
| $data->{$_.':degreeOfDifficulty'} = ($data->{$_.':totalTries'}) ? |
|
| (1 - (($data->{$_.':correct'} + $data->{$_.':correctByOverride'}) / |
|
| $data->{$_.':totalTries'})) : 0; |
|
| |
|
| # Factor in mean |
|
| my $studentTries = $data->{$_.':studentTries'}; |
|
| foreach(my $index=0; $index < scalar(@$studentTries); $index++) { |
|
| $studentTries->[$index] -= $data->{$_.':mean'}; |
|
| } |
|
| my $sumSquared = 0; |
|
| my $sumCubed = 0; |
|
| foreach(@$studentTries) { |
|
| my $squared = ($_ * $_); |
|
| my $cubed = ($squared * $_); |
|
| $sumSquared += $squared; |
|
| $sumCubed += $cubed; |
|
| } |
|
| |
|
| # Standard deviation |
|
| $data->{$_.':standardDeviation'} = ($data->{$_.':studentCount'} - 1) ? |
|
| ((sqrt($sumSquared)) / ($data->{$_.':studentCount'} - 1)) : 0; |
|
| |
|
| # Skewness |
|
| my $standardDeviation = $data->{$_.':standardDeviation'}; |
|
| $data->{$_.':skewness'} = ($data->{$_.':standardDeviation'}) ? |
|
| (((sqrt($sumSquared)) / $data->{$_.':studentCount'}) / |
|
| ($standardDeviation * $standardDeviation * $standardDeviation)) : |
|
| 0; |
|
| |
|
| # Discrimination Factor 1 |
|
| $data->{$_.':discriminationFactor1'} = 0; |
|
| |
|
| # Discrimination Factor 2 |
|
| $data->{$_.':discriminationFactor2'} = 0; |
|
| } |
} |
| |
#&Apache::lonnet::logthis(' '.$top_sum.'/'.$top_max. |
| |
# ' - '.$bottom_sum.'/'.$bottom_max); |
| |
return $deg_of_disc; |
| |
} |
| |
|
| |
############################################### |
| |
############################################### |
| |
## |
| |
## Compute KR-21 |
| |
## |
| |
## To compute KR-21, you need the following information: |
| |
## |
| |
## K=the number of items in your test |
| |
## M=the mean score on the test |
| |
## s=the standard deviation of the scores on your test |
| |
## |
| |
## then: |
| |
## |
| |
## KR-21 rk= [K/(K-1)] * [1- (M*(K-M))/(K*s^2))] |
| |
## |
| |
############################################### |
| |
############################################### |
| |
sub compute_sequence_statistics { |
| |
my ($seq) = @_; |
| |
my $symb = $seq->{'symb'}; |
| |
my @Resources; |
| |
foreach my $res (@{$seq->{'contents'}}) { |
| |
next if ($res->{'type'} ne 'assessment'); |
| |
push (@Resources,$res->{'symb'}); |
| |
} |
| |
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::SelectedSections, |
| |
$Apache::lonstatistics::enrollment_status, |
| |
\@Resources,$starttime,$endtime,undef); |
| |
$SeqStat{$symb}->{'title'} = $seq->{'title'}; |
| |
$SeqStat{$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::SelectedSections, |
| |
$Apache::lonstatistics::enrollment_status, |
| |
\@Resources,$starttime,$endtime,undef); |
| |
my $K = $seq->{'num_assess_parts'}; |
| |
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; |
| |
$SeqStat{$symb}->{'countmin'} = $cmin; |
| |
$SeqStat{$symb}->{'countstd'} = $cSTD; |
| |
$SeqStat{$symb}->{'countmean'} = $cMean; |
| |
$SeqStat{$symb}->{'count'} = $ccount; |
| |
$SeqStat{$symb}->{'items'} = $K; |
| |
$SeqStat{$symb}->{'KR-21'}=$kr_21; |
| return; |
return; |
| } |
} |
| |
|
| sub ProcessDiscriminant { |
|
| my ($List) = @_; |
|
| my @sortedList = sort (@$List); |
|
| my $Count = scalar @sortedList; |
|
| my $Problem; |
|
| my @Dis; |
|
| my $Slvd=0; |
|
| my $tmp; |
|
| my $Sum1=0; |
|
| my $Sum2=0; |
|
| my $nIndex=0; |
|
| my $nStudent=0; |
|
| my %Proc=undef; |
|
| while ($nIndex<$Count) { |
|
| # $jr->print("<br> $nIndex) $sortedList[$nIndex]"); |
|
| ($Problem,$tmp)=split(/\=/,$sortedList[$nIndex]); |
|
| @Dis=split(/\+/,$tmp); |
|
| my $Temp = $Problem; |
|
| do { |
|
| $nIndex++; |
|
| $nStudent++; |
|
| $Sum1 += $Dis[0]; |
|
| $Sum2 += $Dis[1]; |
|
| ($Problem,$tmp)=split(/\=/,$sortedList[$nIndex]); |
|
| @Dis=split(/\+/,$tmp); |
|
| } while ( $Problem eq $Temp && $nIndex < $Count ); |
|
| $Proc{$Temp}=($Sum1/$nStudent).':'.($Sum2/$nStudent); |
|
| # $jr->print("<br> $nIndex) $Temp --> ($nStudent) $Proc{$Temp}"); |
|
| $Sum1=0; |
|
| $Sum2=0; |
|
| $nStudent=0; |
|
| } |
|
| |
|
| return %Proc; |
|
| } |
|
| |
|
| #------- Creating Discimination factor |
|
| sub Discriminant { |
|
| my ($discriminant)=@_; |
|
| my @discriminantKeys=keys(%$discriminant); |
|
| my $Count = scalar @discriminantKeys; |
|
| |
|
| my $UpCnt = int(0.27*$Count); |
|
| my $low=0; |
|
| my $up=$Count-$UpCnt; |
|
| my @UpList=(); |
|
| my @LowList=(); |
|
| |
|
| $Count=0; |
|
| foreach my $key (sort(@discriminantKeys)) { |
|
| $Count++; |
|
| if($low < $UpCnt || $Count > $up) { |
|
| $low++; |
|
| my $str=$discriminant->{$key}; |
|
| foreach(split(/\&/,$str)){ |
|
| if($_) { |
|
| if($low<$UpCnt) { push(@LowList,$_); } |
|
| else { push(@UpList,$_); } |
|
| } |
|
| } |
|
| } |
|
| } |
|
| my %DisUp = &ProcessDiscriminant(\@UpList); |
|
| my %DisLow = &ProcessDiscriminant(\@LowList); |
|
| |
|
| return (\%DisUp, \%DisLow); |
|
| } |
|
| |
|
| #---- END Problem Statistics Web Page ---------------------------------------- |
=pod |
| |
|
| #---- Problem Statistics Graph Web Page -------------------------------------- |
=item ProblemStatisticsLegend |
| |
|
| # ------------------------------------------- Prepare data for Graphical chart |
=over 4 |
| |
|
| sub BuildGraphicChart { |
=item #Stdnts |
| my ($ylab,$r,$cacheDB)=@_; |
Total number of students attempted the problem. |
| my %cache; |
|
| my $Col; |
|
| my $data=''; |
|
| my $count = 0; |
|
| my $Max = 0; |
|
| |
|
| unless(tie(%cache,'GDBM_File',$cacheDB,&GDBM_READER(),0640)) { |
=item Tries |
| return '<html><body>Unable to tie database.</body></html>'; |
Total number of tries for solving the problem. |
| } |
|
| |
|
| my $p_count = $cache{'ProblemCount'}; |
|
| |
|
| for ( my $k=0; $k<$p_count;$k++) { |
=item Max Tries |
| my @Temp=split(/\:/,$cache{'GraphGif:'.$k}); |
Largest number of tries for solving the problem by a student. |
| my $inf = $Temp[$Col]; |
|
| if ( $Max < $inf ) {$Max = $inf;} |
|
| $data .= $inf.','; |
|
| $count++; |
|
| } |
|
| untie(%cache); |
|
| # $r->print("<br>count=$p_count >>data= $data"); |
|
| |
|
| if ( $Max > 1 ) { |
=item Mean |
| $Max += (10 - $Max % 10); |
Average number of tries. [ Tries / #Stdnts ] |
| $Max = int($Max); |
|
| } else { $Max = 1; } |
|
| |
|
| my $cid=$ENV{'request.course.id'}; |
=item #YES |
| |
Number of students solved the problem correctly. |
| |
|
| if ( $ylab eq 'DoDiff Graph' ) { |
=item #yes |
| $ylab = 'Degree-of-Difficulty'; |
Number of students solved the problem by override. |
| $Col = 0; |
|
| } else { |
|
| $ylab = 'Wrong-Percentage'; |
|
| $Col = 1; |
|
| } |
|
| my $Course = $ENV{'course.'.$cid.'.description'}; |
|
| $Course =~ s/\ /"_"/eg; |
|
| my $GData=$Course.'&'.'Problems#'.'&'.$ylab.'&'. |
|
| $Max.'&'.$count.'&'.$data; |
|
| |
|
| $r->print('<IMG src="/cgi-bin/graph.gif?'.$GData.'" />'); |
=item %Wrong |
| |
Percentage of students who tried to solve the problem |
| |
but is still incorrect. [ 100*((#Stdnts-(#YES+#yes))/#Stdnts) ] |
| |
|
| return; |
=item DoDiff |
| } |
Degree of Difficulty of the problem. |
| |
[ 1 - ((#YES+#yes) / Tries) ] |
| |
|
| |
=item S.D. |
| |
Standard Deviation of the tries. |
| |
[ sqrt(sum((Xi - Mean)^2)) / (#Stdnts-1) |
| |
where Xi denotes every student\'s tries ] |
| |
|
| |
=item Skew. |
| |
Skewness of the students tries. |
| |
[(sqrt( sum((Xi - Mean)^3) / #Stdnts)) / (S.D.^3)] |
| |
|
| |
=item Dis.F. |
| |
Discrimination Factor: A Standard for evaluating the |
| |
problem according to a Criterion<br> |
| |
|
| |
=item [Criterion to group students into %27 Upper Students - |
| |
and %27 Lower Students] |
| |
1st Criterion for Sorting the Students: |
| |
Sum of Partial Credit Awarded / Total Number of Tries |
| |
2nd Criterion for Sorting the Students: |
| |
Total number of Correct Answers / Total Number of Tries |
| |
|
| |
=item Disc. |
| |
Number of Students had at least one discussion. |
| |
|
| |
=back |
| |
|
| |
=cut |
| |
|
| |
############################################################ |
| |
############################################################ |
| |
|
| 1; |
1; |
| __END__ |
__END__ |
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