Hi everyone,

I am trying to perform a linear discriminant analysis (lda) using the MASS
package on a community dataset (sites by species, similar to the dune
dataset in vegan). I have defined groups of species based on an a priori
ecological hypothesis. Does anyone know how to perform the lda on species
based on their abundances at each site?  I want to see if the groups of
species are significantly different from one another, and how they are
realized in the community space.  So far I can only find examples of lda's
of sites where they have been previously grouped based on clustering
alogrithms.

Thanks so much,
Vincenzo

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