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.