In addition to the other suggestions, you can use logical subsetting with autoreplication:
> x <- 1:6 > x[ c(T,F) ] [1] 1 3 5 > x[ c(F,T) ] [1] 2 4 6 -- Gregory (Greg) L. Snow Ph.D. Statistical Data Center Intermountain Healthcare greg.s...@imail.org 801.408.8111 > -----Original Message----- > From: r-help-boun...@r-project.org [mailto:r-help-boun...@r- > project.org] On Behalf Of Walther, Alexander > Sent: Sunday, January 17, 2010 4:20 AM > To: r-help@r-project.org > Subject: [R] Choose every second value > > Dear list, > > is there a command that selects every second value from a given vector? > For instance, > > a <- c(1,2,3,4,5,6) > > should yield > > 1,3,5 > > and > > 2,4,6 > > which i intend to place into two seperate vectors. > > > best > > Alex > > ______________________________________________ > 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. ______________________________________________ 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.
