Message-ID: <B25D197D366263478F81BF0052776F67064192@STPvMailbox01.srlglobal.local>
Date: 2011-10-05T16:15:27Z
From: Samuel Le
Subject: Populate a matrix
In-Reply-To: <A0C20390AF37844A9E2C783C9C268D8C496566EEB4@CCD1XM1101.ccd1.root4.net>
mat <- matrix(ncol = length(x), nrow = length(y))
for(i in 1:length(x)) { mat[,i] = y}
HTH,
Samuel
-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] On Behalf Of fernando.cabrera at nordea.com
Sent: 05 October 2011 17:11
To: r-help at r-project.org
Subject: [R] Populate a matrix
Hi guys
I have vectors x <- c(1,2,3,4) and y <- c(4,3,9) and would like to generate a matrix which has 3 rows (length(y)) and 4 columns (length(x)), and each row is the corresponding y element repeated length(x) times.
4,4,4,4
3,3,3,3
9,9,9,9
Thanks.
Fernando ?lvarez
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