Opposite of %in%

Question

A categorical variable V1 in a data frame D1 can have values represented by the letters from A to Z. I want to create a subset D2, which excludes some values, say, B, N and T. Basically, I want a command which is the opposite of %in% D2 = subset(D1, V1 %in% c('B','N',T')) Select the correct answer from above options

Answer 1

To perform the opposite operation of %in% operator, use the following : D2 = subset(D1, !(V1 %in% c('B','N','T'))) OR '%ni%' <- Negate('%in%') D2 = subset(D1, V1 %ni% c('B','N',T'))