It doesn't work (in R) because it is not written in R. It's written in some other language that looks a bit like R.
> t <- 3 > z <- t %in% 1:3 > z [1] TRUE > t <- 4 > z <- t %in% 1:3 > z [1] FALSE > -----Original Message----- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of eric Sent: Thursday, 17 March 2011 1:26 PM To: r-help@r-project.org Subject: [R] Why doesn't this work ? Why doesn't this work and is there a better way ? z <-ifelse(t==1 || 2 || 3, 1,0) t <-3 z [1] 1 t <-4 z [1] 1 trying to say ...if t == 1 or if t== 2 or if t ==3 then true, otherwise false -- View this message in context: http://r.789695.n4.nabble.com/Why-doesn-t-this-work-tp3383656p3383656.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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.