[R-sig-eco] Co-correspondence analysis

[Gavin Simpson]

On Wed, 2012-02-29 at 18:44 +0100, Duarte Viana wrote:
> Dear all,
> 
> I want relate two matrices of species presence-absence data,
> preferably in a predictive manner. Is it reasonable to do it by
> co-correspondence analysis using the "coca" function in the
> "cocorresp" package? Some papers seem to use presence-absence data,
> but the help document for this function only refers to abundance data.
> 
> Any insights in this would be greatly appreciated.
> 
> Duarte

As CoCA is based very much on the ideas of weighted averages and
correspondence analysis (CA) and that CA can be used on presence absence
data, yes, presence absence data can be analysed using CoCA.

HTH

G

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