Moving value of the same variable into a new vector based on all possible combinations?

Asked Mar 26 '18 at 11:55

Active Mar 26 '18 at 12:18

Viewed 26 times

Starting from the A object

A<-c(1,2,3,4)

I want to obtain the following matrix with B and C:

     B C
[1,] 1 2
[2,] 1 3
[3,] 1 4
[4,] 2 3
[5,] 2 4
[6,] 3 4

Any idea on how to code this? I was trying to use mutate function in dplyr but I have not managed it.

How to implement this in a dplyr pipe?

edited Mar 26 '18 at 12:18

asked Mar 26 '18 at 11:55

Gabriele Midolo

3

Try with `combn` i.e. `t(combn(A, 2))` – akrun Mar 26 '18 at 11:58
Thanks. But how to implement it in a dplyr pipe of a dataframe? – Gabriele Midolo Mar 26 '18 at 12:18
1

If you need a pipe `A %>% {combn(., 2)} %>% t` – akrun Mar 26 '18 at 12:21

0 Answers0