Alaios <alaios <at> yahoo.com> writes: > I have in my code some vectors that are not of equal size. I would like to be able for each of these vectors > select 6 elements that are (almost) equally spaced. So the first one would be at (or close) to the beginning > the last one at (or close) to the end and the other 4 equally spaced between first and last element. > > How can I do something like that on a vector of not known size? > > I would like to thank you in advance for your help Would something like this be what you are looking for?
N <- 20 set.seed(16121952) x <- runif(N) x rx <- range(x) br <- seq(rx[1], rx[2], len = 6) sapply(br, function(bx){ x[which.min(abs(x - bx))] }) [1] 0.02910779 0.22708582 0.39239718 0.52419265 0.68940262 0.86889817 > > Regards > Alex -- Kenneth Knoblauch Inserm U846 Stem-cell and Brain Research Institute Department of Integrative Neurosciences 18 avenue du Doyen Lépine 69500 Bron France tel: +33 (0)4 72 91 34 77 fax: +33 (0)4 72 91 34 61 portable: +33 (0)6 84 10 64 10 http://www.sbri.fr/members/kenneth-knoblauch.html ______________________________________________ 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.