repmat: Fast replication of a matrix
In MESS: Miscellaneous Esoteric Statistical Scripts

repmat

R Documentation

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)

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

Value

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

Author(s)

Claus Ekstrom <claus@rprimer.dk>

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

MESS documentation built on Aug. 21, 2023, 1:05 a.m.