This was just an illustration. It is the warning message that I don't understand. The warning says "number of items to replace is not a multiple of replacement length". The way I look at it 10 is a multiple of 20.
Kevin ---- Sarah Goslee <sarah.gos...@gmail.com> wrote: > The lengths are different, particularly the length of subsetted x[i] > > > x <- 1:20 > > i <- x %% 2 > 0 > > y <- rep(1,20) > > > length(x) > [1] 20 > > length(i) > [1] 20 > > length(x[i]) > [1] 10 > > length(y) > [1] 20 > > You happened to be lucky and got what you wanted, but a more reliable > approach is: > > > x[i] <- y[i] > > Sarah > > On Thu, Jan 15, 2009 at 1:08 PM, <rkevinbur...@charter.net> wrote: > > I have a question on whether a warning message is valid or if I just don't > > understand the process. Let me illustrate via some R code: > > > > x <- 1:20 > > i <- x %% 2 > 0 > > y <- rep(1,20) > > > > x[i] <- y > > Warning message: > > In x[i] <- y : > > number of items to replace is not a multiple of replacement length > > > > But it still does what I would expect for the assignment: > > > >> x > > [1] 1 2 1 4 1 6 1 8 1 10 1 12 1 14 1 16 1 18 1 20 > >> > > > > What don't I understand? > > > > Thank you. > > > > Kevin > > > > -- > Sarah Goslee > http://www.functionaldiversity.org ______________________________________________ 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.
