org [mailto:r-help-boun...@r-
> project.org] On Behalf Of li li
> Sent: Tuesday, October 12, 2010 2:00 PM
> To: r-help
> Subject: [R] extract rows of a matrix
>
> Hi all,
> I want to extract every 20th row of a big matrix, say 1 by 1000.
> What is the simpe
Hannah,
a <- matrix(rnorm(1),nrow=500)
new.matrix <- a[seq(0,dim(a)[1],by=20),]
Jonathan
On Tue, Oct 12, 2010 at 1:59 PM, li li wrote:
> Hi all,
> I want to extract every 20th row of a big matrix, say 1 by 1000.
> What is the simper way to do this?
> Thank you very much!
>
Hi all,
I want to extract every 20th row of a big matrix, say 1 by 1000.
What is the simper way to do this?
Thank you very much!
Hannah
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