Row and column means

Compute row or column means of a matrix or aMatrix, dispatching to an accelerated backend when one is available.

Usage

rowmeans(x, na.rm = FALSE)

colmeans(x, na.rm = FALSE)

Arguments

x

A matrix or aMatrix object.

na.rm

Logical; if TRUE, NA values are excluded before averaging. Default FALSE.

Value

A numeric vector of length nrow(x) (rowmeans) or ncol(x) (colmeans).

Examples

m <- matrix(1:12, 3, 4)
rowmeans(m)
#> [1] 5.5 6.5 7.5
colmeans(m)
#> [1]  2  5  8 11