Finding the number of unique elements in two vectors in R

Question

I\'m working with two \'lists\' or vectors in R, and I need to find out the number of unique elements in both, together.

I tried doing length(summary(merge(v1, v2

Answer 1

It sounds like you're looking for union:

> union(v1, v2)
[1]  1  2  3  4  5  6 10 11