[R] Divide matrix columns by different numbers

[Berend Hasselman]

On 02-05-2013, at 08:28, Sachinthaka Abeywardana <sachin.abeywardana at gmail.com> wrote:

> Hi all,
> 
> I have a feeling the most efficient way to do the following is to use
> apply, but I'm still wrapping my head around the function.
> 
> k=matrix(1:6,nrow=3)
> 
> div=1:2
> 
> 
> Questions is how do I get R to divide the first column by 1 (div[1]) and
> the second column by 2 (div[2])
> 
> k/div treats k as a vector and does the following (not what I want)
> 
>> k/div
> 
> 
>      [,1] [,2]
> [1,]    1    2
> [2,]    1    5
> [3,]    3    3

k / rep(div,each=nrow(k))

Berend