[R-sig-eco] partial Mantel test

[Gavin Simpson]

On Tue, 2011-06-07 at 07:46 -0500, Iannone, Basil wrote:
> Dear r users,
> 
> I have a very quick and probably very easy question pertaining to the
> conducting of a partial Mantel test in the vegan package using the code
> below.
> 
> mantel.partial(xdis, ydis, zdis, method = "pearson", permutations = 999,
> strata)
> 
> So I want to test for a relationship between a species distance matrix A and
> an environmental distance matrix B while controlling for (considering the
> effects of) a third distance matrix C.
> 
> So what I need to know is if I am correct in my understanding that using the
> above code I would enter A as "xdis," B as "ydis," and C (the extra matrix
> that I want to control for) as "zdis."

Yes, that is correct - at least to my reading of the help page and the
code.

HTH

G

> Could someone please tell me if I am correct and if I am not please let me
> know how to specify the matrices correctly.
> 
> Thanks for the help,
> 
> 
> 

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