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". > dim(superset_dataframe) [1] 248 31 > dim(subset_dataframe) [1] 214 31 Thank you for any suggestions of functions that might exist that might help. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
