[R] cor.test on spatial data

[SuzieBlatt@netscape.net]

I have spatial data on various species of trees within plots.  What I'd like to know is if their patterns are positively associated or not.  Could I use cor.test on the values generated by Kest or Gest functions? or would it be more powerful to do a G i to j and then G j to i analysis instead?
Thanks,
Suzie

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