On 17-08-2012, at 18:18, penguins wrote: > Can anyone tell me how to remove several numbers for a sequence. For example: > > xx<- c(1,5,7,10) > yy<-seq(1,10,1) > > how do I get take xx away from yy to get the new sequence > > 2,3,4,6,8,9 > You can also do this yy[!(yy %in% xx)] Berend