add_torows function

Fast addition of vector to each row of matrix

Fast addition of vector to each row of a matrix. This corresponds to t(t(x) + v)

add_torows(x, v)

Arguments

• x: A matrix with dimensions n*k.
• v: A vector of length k.

Returns

A matrix of dimension n*k where v is added to each row of x

Examples

A <- matrix(1:12, ncol=3)
B <- c(1, 2, 3)

add_torows(A, B)

Author(s)

Claus Ekstrom claus@rprimer.dk