Size of Matrix

Provides the dimensions of x.

size(x, k)

Arguments

x

vector, matrix, or array

k

integer specifying a particular dimension

Details

Returns the number of dimensions as length(x).

Vector will be treated as a single row matrix.

Value

vector containing the dimensions of x, or the k-th dimension if k is not missing.

Note

The result will differ from Matlab when x is a character vector.

See also

dim

Examples

size(1:8)
#> [1] 1 8
size(matrix(1:8, 2, 4))    # 2 4
#> [1] 2 4
size(matrix(1:8, 2, 4), 2)  # 4
#> [1] 4
size(matrix(1:8, 2, 4), 3)  # 1
#> [1] 1