Re: [R] extract rows of a matrix

2010-10-13 Thread Greg Snow
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

Re: [R] extract rows of a matrix

2010-10-12 Thread Jonathan Christensen
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! >          

[R] extract rows of a matrix

2010-10-12 Thread li li
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 [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.e