How to remove repeated elements in a vector, similar to 'set' in Python
I have a vector with repeated elements, and would like to remove them so that each element appears only once.
In Python I could construct a Set from a vector to achieve this, but how can I do this in R?
Solution 1:
You can check out unique function.
> v = c(1, 1, 5, 5, 2, 2, 6, 6, 1, 3)
> unique(v)
[1] 1 5 2 6 3
Solution 2:
This does the same thing. Slower, but useful if you also want a logical vector of the duplicates:
v[duplicated(v)]