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

### See Also

`bwss`, `anova.MAList`

[Package limma version 2.2.0 Index]