[R-sig-eco] Vector overlays on nmds ordination

[Gavin Simpson]

On Tue, 2010-11-02 at 12:43 -0400, Wade Wall wrote:
> Hi all,
> 
> I used to use PC-Ord for performing nmds ordinations but have started to use
> nmds in R as implemented in labdsv().  One of the things that I did like in
> PC-Ord was the vector (either species or environmental variable) overlay
> that could be implemented.  Is there anything equivalent to this in R?  Just
> wondering.  I know that one could write the code, just didn't want to
> reinvent the wheel.
> 
> Thanks for any information,
> 
> Wade Wall

In the vegan package, you can use metaMDS() to do the nMDS, then
envfit() and ordisurf() are options to add vectors and GAM response
surfaces of variables to the nMDS ordination space.

See the vignettes/documentation for the vegan package for further
details:

http://cran.r-project.org/web/packages/vegan/index.html

HTH

G

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