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Statistics::Basic::Mode.3pm
Langue: en
Version: 2009-05-02 (debian - 07/07/09)
Section: 3 (Bibliothèques de fonctions)
NAME
Statistics::Basic::Mode - find the mode of an arraySYNOPSIS
Invoke it this way:my $mode = mode(1,2,3,3);
Or this way:
my $v1 = vector(1,2,3,3); my $mod = mode($v1);
And then either query the values or print them like so:
print "The mod of $v1: $mod\n"; my $mq = $mod->query; my $m0 = 0+$mod; # this will croak occasionally, see below
The mode of an array is not necessarily a scalar. The mode of this vector is a vector:
my $mod = mode(1,2,3); my $v2 = $mod->query; print "hrm, there's three elements in this mode: $mod\n" if $mod->is_multimodal; use Scalar::Util qw(blessed); print "hrm, there's three elements in this mode: $mod\n" if blessed($v2) and $v2->isa("Statistics::Basic::Vector");
Create a 20 point ``moving'' mode like so:
my $sth = $dbh->prepare("select col1 from data where something"); my $len = 20; my $mod = mode(); $mod->set_size($len); $sth->execute or die $dbh->errstr; $sth->bind_columns( my $val ) or die $dbh->errstr; my $count = $len; while( $sth->fetch ) { $mod->insert( $val ); if( -- $count <= 0 ) { print "Mode: $mod\n"; } }
The full details are probably in the base module. If you have questions, just let me know.
AUTHOR
Paul Miller "<jettero@cpan.org>"COPYRIGHT
Copyright 2009 Paul Miller --- Licensed under the LGPLSEE ALSO
perl(1), Statistics::BasicContenus ©2006-2024 Benjamin Poulain
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