Logical "and"
Alexander Sokol <alexandersokol at ofir.dk> writes:
Hello, I have the following very simple problem: Say I have two vectors, a<-c(1,7,4,5,9,11) b<-c(7,4,9) I would like to create a vector containing the elements in a which are not in b.
As in
setdiff(a,b)
[1] 1 5 11 or
a[!(a %in% b)]
[1] 1 5 11 ? (Note that they differ if a has nonunique values).
O__ ---- Peter Dalgaard Blegdamsvej 3 c/ /'_ --- Dept. of Biostatistics 2200 Cph. N (*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918 ~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk) FAX: (+45) 35327907