On Mon, Apr 18, 2011 at 4:14 AM, helin_susam <helin.su...@gmail.com> wrote: > if you have a vector like as follows; > > r=c(1,2,3,4,5) > > then use > > r2=r[1:length(r)-1]
Umm ... this works and gives the intended answer but does so in an ugly way -- 1:length(r)-1 is equivalent to (1:length(r))-1 or 0:(length(r)-1) -- in other words, you get a sequence from 0 to 4. The result of r[0] is, curiously, integer(0) (but if you think about it, it might just as well be an error), so you get the intended result but what you probably actually meant is r2=r[1:(length(r)-1)] # or r2=r[1:seq_len(length(r)-1)] KK ______________________________________________ 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.
