| ID | X | Y |
| 1 | 1 | 2 |
| 2 | 2 | 1 |
| 3 | 3 | 5 |
| 4 | 4 | 6 |
Thank you!
Drop duplicate pairs (X,Y; Y,X)
Unfortunately, I was not able to find out how to drop a pair of duplicates. Let's say we have variables ID, X and Y and the data looks as follows:
I would like to identify ID1 and ID2 as a pair and drop ID2. However, this does not work with "duplicates". Do you have an efficient solution for this problem?
Thank you!
Thank you!
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