[R] Divide matrix columns by different numbers
arun
smartpink111 at yahoo.com
Thu May 2 14:29:03 CEST 2013
t(t(k)/div)
# [,1] [,2]
#[1,] 1 2.0
#[2,] 2 2.5
#[3,] 3 3.0
A.K.
----- Original Message -----
From: Sachinthaka Abeywardana <sachin.abeywardana at gmail.com>
To: "r-help at r-project.org" <r-help at r-project.org>
Cc:
Sent: Thursday, May 2, 2013 2:28 AM
Subject: [R] Divide matrix columns by different numbers
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
Thanks,
Sachin
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