thnkyou very much micheal. i worked!!! regards eliza > From: michael.weyla...@gmail.com > Date: Tue, 18 Sep 2012 15:58:31 +0100 > Subject: Re: [R] extracting column and regular interval in R > To: eliza_bo...@hotmail.com > CC: r-help@r-project.org > > x[c(TRUE, rep(FALSE, 36)),] > > and let recycling work its magic! > > To concretize: > > x <- 1:100 > > x[c(TRUE, rep(FALSE, 4))] > > Cheers, > Michael > > On Tue, Sep 18, 2012 at 3:55 PM, eliza botto <eliza_bo...@hotmail.com> wrote: > > > > Dear R users, > > i have a matrix with 31 rows and 444 columns and i want to extract every > > 37th column of that matrix starting from 1. more precisely i want to select > > columns 1, 38,75, 112 and so on. then doing the same by starting from > > column number 2(2,39,76,113.......). > > i know that there is a manual way of doing it but i wanted to make it more > > quickly as i have fairly large data to dealth with. > > > > thanks in advance > > eliza > > [[alternative HTML version deleted]] > > > > ______________________________________________ > > R-help@r-project.org mailing list > > https://stat.ethz.ch/mailman/listinfo/r-help > > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > > and provide commented, minimal, self-contained, reproducible code. [[alternative HTML version deleted]]
______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
