On 2009.09.16. 16:08, Jack Tanner wrote:
I'd like to have something like seq() where I can pass in a length of the desired sequence and a right limit so that the sequence goes up to the limit and then starts again from 1.
Disclaimer: total R beginner here (started to learn a 1 day ago), who just came to this list to learn.
You could use the modulo operator.
# works now seq(from=2, length.out=3) [1] 2 3 4 # what I want seq(from=2, length.out=3, rlimit=3) [1] 2 3 1 # additional examples of what I want seq(from=2, length.out=4, rlimit=3) [1] 2 3 1 2
seq(from=1, length.out=4) %% 3 + 1
seq(from=2, length.out=4, rlimit=4) [1] 2 3 4 1
seq(from=1, length.out=4) %% 4 + 1
seq(from=2, length.out=3, rlimit=2) [1] 2 1 2
seq(from=1, length.out=3) %% 2 + 1 (the 'from' needed to be decreased by one, otherwise it'd start from 0)
I can write this procedurally, but it seems like there ought to be a cleaner R way of doing it. Thanks in advance for any suggestions.
______________________________________________ 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.
