Message-ID: <3C99BA74.6FBB60BA@statoo.com>
Date: 2002-03-21T10:48:20Z
From: Diego Kuonen
Subject: repeating rows or columns within a matrix
Juhana Vartiainen wrote:
>
> Spse I have a matrix, say
...
> and I would like to expand it by repeating rows within the matrix, to
> get, if the repeating factor is 2, say:
...
> (or columnwise as well) . There must be a smart way of doing that?
For your particular example the following works
apply(matrix(1:9,ncol=3,byrow=T), 2, rep, rep(2,3))
You may also want to look at
?apply
?rep
to adapt it to your needs.
Sincerely,
Diego Kuonen
--
Dr. ?s sc. Diego Kuonen CEO & Applied Statistician
Statoo Consulting, PO Box 107, 1015 Lausanne, Switzerland
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