1Statistics::Basic::MediUasne(r3)Contributed Perl DocumenSttaattiiosntics::Basic::Median(3)
2
3
4

NAME

6       Statistics::Basic::Median - find the median of a list
7

SYNOPSIS

9       Invoke it this way:
10
11           my $median = median(1,2,3);
12
13       Or this way:
14
15           my $v1  = vector(1,2,3);
16           my $med = median($v1);
17
18       And then either query the values or print them like so:
19
20           print "The median of $v1: $med\n";
21           my $mq = $med->query;
22           my $m0 = 0+$med;
23
24       Create a 20 point "moving" median like so:
25
26           use Statistics::Basic qw(:all nofill);
27
28           my $sth = $dbh->prepare("select col1 from data where something");
29           my $len = 20;
30           my $med = median()->set_size($len);
31
32           $sth->execute or die $dbh->errstr;
33           $sth->bind_columns( my $val ) or die $dbh->errstr;
34
35           while( $sth->fetch ) {
36               $med->insert( $val );
37               if( defined( $m = $med->query ) ) {
38                   print "Median: $m\n";
39               }
40
41               # This would also work:
42               # print "Median: $med\n" if $med->query_filled;
43           }
44

METHODS

46       new()
47           The constructor takes a single array ref or a single
48           Statistics::Basic::Vector as arguments.  It returns a
49           Statistics::Basic::Median object.
50
51           Note: normally you'd use the median() constructor, rather than
52           building these by hand using "new()".
53
54       _OVB::import()
55           This module also inherits all the overloads and methods from
56           Statistics::Basic::_OneVectorBase.
57

OVERLOADS

59       This object is overloaded.  It tries to return an appropriate string
60       for the calculation or the value of the computation in numeric context.
61
62       In boolean context, this object is always true (even when empty).
63

AUTHOR

65       Paul Miller "<jettero@cpan.org>"
66

68       Copyright 2012 Paul Miller -- Licensed under the LGPL
69

SEE ALSO

71       perl(1), Statistics::Basic, Statistics::Basic::_OneVectorBase,
72       Statistics::Basic::Vector
73
74
75
76perl v5.28.1                      2012-01-23      Statistics::Basic::Median(3)
Impressum