MESS (version 0.5.12)

repmat: Fast replication of a matrix

Description

Fast generation of a matrix by replicating a matrix row- and column-wise in a block-like fashion

Usage

repmat(x, nrow = 1L, ncol = 1L)

Value

A matrix with dimensions (r*nrow) x (c*ncol)

Arguments

x

A matrix with dimensions r*c.

nrow

An integer giving the number of times the matrix is replicated row-wise

ncol

An integer giving the number of times the matrix is replicated column-wise

Author

Claus Ekstrom <[e-mail]>

Examples

m <- matrix(1:6, ncol=3)
repmat(m, 2)     # Stack two copies of m on top of each other
repmat(m, 2, 3)  # Replicate m with two copies on top and three copies side-by-side