[R] repeating rows or columns within a matrix
Dr. Diego Kuonen
kuonen at statoo.com
Thu Mar 21 11:48:20 CET 2002
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
to adapt it to your needs.
Dr. ès sc. Diego Kuonen CEO & Applied Statistician
Statoo Consulting, PO Box 107, 1015 Lausanne, Switzerland
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