Replicate Matrix

Replicate and tile matrix.

repmat(a, n, m = n)

Arguments

a

vector or matrix to be replicated.

n, m

number of times to replicate in each dimension.

Details

repmat(a,m,n) creates a large matrix consisting of an m-by-n tiling of copies of a.

Value

Returns matrix with value a replicated to the number of times in each dimension specified. Defaults to square if dimension argument resolves to a single value.

See also

Reshape

Examples

repmat(1, 3)                  # same as ones(3)
#>      [,1] [,2] [,3]
#> [1,]    1    1    1
#> [2,]    1    1    1
#> [3,]    1    1    1
repmat(1, 3, 3)
#>      [,1] [,2] [,3]
#> [1,]    1    1    1
#> [2,]    1    1    1
#> [3,]    1    1    1
repmat(matrix(1:4, 2, 2), 3)
#>      [,1] [,2] [,3] [,4] [,5] [,6]
#> [1,]    1    3    1    3    1    3
#> [2,]    2    4    2    4    2    4
#> [3,]    1    3    1    3    1    3
#> [4,]    2    4    2    4    2    4
#> [5,]    1    3    1    3    1    3
#> [6,]    2    4    2    4    2    4