[R] pairwise comparisons

[Roger D. Peng]

Are you talking about repeated rows?  Does unique() do what you want?

-roger

Rebecca Young wrote:

> Hello,
> 
> I am a new R user.  I am trying to calculate vector correlations for all
> pairwise comparisons in my data frame without repeats.  I am familiar with the
> expand.grid function, but this includes repeats.  Is there a way to use
> expand.grid and eliminate repeats?  Or is there another function that can be
> used to do this?
> 
> Thank you.
> Rebecca
> 
> 
> --
> Rebecca Young
> Graduate Student
> Ecology & Evolutionary Biology, Badyaev Lab
> University of Arizona
> 1041 E Lowell
> Tucson, AZ 85721-0088
> Office: 425BSW
> rlyoung at email.arizona.edu
> (520) 621-4005
> 
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