[R-sig-eco] Vector overlays on nmds ordination
Gavin Simpson
gavin.simpson at ucl.ac.uk
Tue Nov 2 18:09:30 CET 2010
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
--
%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%
Dr. Gavin Simpson [t] +44 (0)20 7679 0522
ECRC, UCL Geography, [f] +44 (0)20 7679 0565
Pearson Building, [e] gavin.simpsonATNOSPAMucl.ac.uk
Gower Street, London [w] http://www.ucl.ac.uk/~ucfagls/
UK. WC1E 6BT. [w] http://www.freshwaters.org.uk
%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%
More information about the R-sig-ecology
mailing list