I'm trying to identify and remove rows in a data frame that are duplicated
only on particular columns within it (i.e. not on all columns). The
unique function looks for uniqueness across all columns of a data frame.
Identifying unique rows based only on specific columns of interest returns
only
On Tue, May 11, 2010 at 9:07 PM, Jim Bouldin jrboul...@ucdavis.edu wrote:
I'm trying to identify and remove rows in a data frame that are duplicated
only on particular columns within it (i.e. not on all columns).
This is probably the cleanest way:
dat - data.frame(x = c(1, 2, 3), y = c(1, 1,
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