[R] multiplying a matrix by a vector

[Dimitri Liakhovitski]

Hello!

I have a matrix x and a vector y:

x <- matrix(1:6, ncol = 2)
y <- c(2,3)

I need to multiply the first column of x by 2 (y[1]) and the second
column of x by 3 (y[2]).

Of course, I could do this - but it's column by column:

x[,1] <- x[,1] * y[1]
x[,2] <- x[,2] * y[2]
x

Or I could repeat each element of y and multiply two matrices - that's better:

rep.row<-function(x,n){
  matrix(rep(x,each=n),nrow=n)
}
y <- rep.row(y, nrow(x))
x * y

However, maybe there is a more elegant r-like way of doing it?
Thank you!

-- 
Dimitri Liakhovitski