[R] Removing

[Patrick Burns]

Simpler, but maybe wrong.  Not duplicated
was my first response as well, but then I began
wondering if the question implied globally
duplicated or duplicated within subgroups.


Patrick Burns
patrick at burns-stat.com
+44 (0)20 8525 0696
http://www.burns-stat.com
(home of "The R Inferno" and "A Guide for the Unwilling S User")

David Winsemius wrote:
> Much simpler would be:
>
> act2[!duplicated(act2$Rep),]   #use the negation of the duplicated 
> function on $Rep and indexing
>
>          Date    Dtime Hour Min Second               Rep
> 51 2006-02-22 14:52:18   14  52     18  useractivity_act
> 52 2006-02-22 14:52:18   14  52     18                 4
> 58 2006-02-22 14:52:52   14  52     52                 3
> 60 2006-02-22 14:54:42   14  54     42 useractivity_idle
>
> Cannot reproduce the blank line though.