[R] setdiff for data.frames?
jasonkrupert at yahoo.com
Thu Mar 12 22:58:08 CET 2009
I have two data.frames.
One is the subset of the other. I need to determine what rows were removed from the superset data.frame to form the subset data.frame.
I was hoping to turn up functionality similar to setdiff for data.frames, but did not have any luck. It seems I need to find a function that performs the oposite as "merge".
 248 31
 214 31
Thank you for any suggestions of functions that might exist that might help.
More information about the R-help