> x[seq(1, nrow(x), by=5), ]
-----Original Message-----
From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org]
On Behalf Of David Winsemius
Sent: Thursday, October 08, 2009 4:19 PM
To: Ashta
Cc: R help
Subject: Re: [R] row selection
On Oct 8, 2009, at 4:14 PM, Ashta wrote:
> Hi all,
> I have a matrix named x with N by C
> I want to select every 5 th rrow from matrix x I used the following
> code
> n<- nrow(x)
>> for(i in 1: n){
> + b <- a[i+5,]
>> b
> }
> Error: subscript out of bounds
What did you expect when "i" in your loop counter became one greater
than the number of rows?
>
David Winsemius, MD
Heritage Laboratories
West Hartford, CT
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