Statistics::Basic::MedUser3Contributed Perl DocumeStatistics::Basic::Median(3)NAMEStatistics::Basic::Median - find the median of a list
SYNOPSIS
Invoke it this way:
my $median = median(1,2,3);
Or this way:
my $v1 = vector(1,2,3);
my $med = median($v1);
And then either query the values or print them like so:
print "The median of $v1: $med\n";
my $mq = $med->query;
my $m0 = 0+$med;
Create a 20 point "moving" median like so:
use Statistics::Basic qw(:all nofill);
my $sth = $dbh->prepare("select col1 from data where something");
my $len = 20;
my $med = median()->set_size($len);
$sth->execute or die $dbh->errstr;
$sth->bind_columns( my $val ) or die $dbh->errstr;
while( $sth->fetch ) {
$med->insert( $val );
if( defined( $m = $med->query ) ) {
print "Median: $m\n";
}
# This would also work:
# print "Median: $med\n" if $med->query_filled;
}
METHODSnew()
The constructor takes a single array ref or a single
Statistics::Basic::Vector as arguments. It returns a
Statistics::Basic::Median object.
Note: normally you'd use the median() constructor, rather than
building these by hand using "new()".
_OVB::import()
This module also inherits all the overloads and methods from
Statistics::Basic::_OneVectorBase.
OVERLOADS
This object is overloaded. It tries to return an appropriate string
for the calculation or the value of the computation in numeric context.
In boolean context, this object is always true (even when empty).
AUTHOR
Paul Miller "<jettero@cpan.org>"
COPYRIGHT
Copyright 2009 Paul Miller -- Licensed under the LGPL
SEE ALSOperl(1), Statistics::Basic, Statistics::Basic::_OneVectorBase,
Statistics::Basic::Vector
perl v5.14.1 2009-06-28 Statistics::Basic::Median(3)
