R: Between and within sums of squares for matrix

bwss.matrix {limma}

R Documentation

Between and within sums of squares for matrix

Description

Sums of squares between and within the columns of a matrix. Allows for missing values. This function is called by the anova method for MAList objects.

Usage

bwss.matrix(x)

Arguments

`x`	a numeric matrix.

Details

This is equivalent to a one-way analysis of variance where the columns of the matrix are the groups. If x is a matrix then bwss.matrix(x) is the same as bwss(x,col(x)) except for speed of execution.

Value

A list with components

`bss`	sums of squares between the column means.
`wss`	sums of squares within the column means.
`bdf`	degrees of freedom corresponding to `bss`.
`wdf`	degrees of freedom corresponding to `wss`.

Author(s)

Gordon Smyth