as.pairwise: Convert a results matrix to a board

In aylmer: A generalization of Fisher's exact test

Description

Given a square matrix giving the results of pairwise comparisons, return a board object whose rows show the results of the comparisons.

Usage

as.pairwise(x)

Arguments

x	A square matrix

Details

With x an n-by-n square matrix, the rows and columns each correspond to one of n “competitors”. The (i,j)-th entry the number of times competitor i beats competitor j (the leading diagonal holds NAs because a competitor can't play himself).

Function as.pairwise() turns this into a n(n-1)/2-by-n matrix whose rows each correspond to a pairwise comparison. Any row has exactly two non-NA entries, in columns i and j, that correspond to elements (i,j) and (j,i) of x. Thus the entry in column i is the number of times competitor i beats competitor j; and the entry in column j is the number of times competitor j beats competitor i.

Author(s)

Robin K. S. Hankin

See Also

aylmer.test

Examples

a <- matrix(rpois(25,4),5,5)
rownames(a) <- letters[1:5]
colnames(a) <- letters[1:5]
as.pairwise(a)

aylmer documentation built on May 29, 2017, 1:12 p.m.