Block Diagonal Matrix

Description

Form a block diagonal matrix from the given blocks.

Usage

blockDiag(...)

Arguments

Details

This function is sometimes useful for constructing a design matrix for a disconnected two-color microarray experiment in conjunction with modelMatrix.

Value

A block diagonal matrix with dimensions equal to the sum of the input dimensions

Author(s)

Gordon Smyth

See Also

modelMatrix

Examples

a <- matrix(1,3,2)
b <- matrix(2,2,2)
blockDiag(a,b)