You ought to be very careful about using residuals from one analysis as the response variable in another analysis as the inferences about the second analysis will almost certainly be flawed. Best to try and do this another way if at all possible.
Brian Brian S. Cade, PhD U. S. Geological Survey Fort Collins Science Center 2150 Centre Ave., Bldg. C Fort Collins, CO 80526-8818 email: ca...@usgs.gov <brian_c...@usgs.gov> tel: 970 226-9326 On Tue, Mar 18, 2014 at 5:53 AM, Alicia Valdés <aliciavaldes1...@gmail.com>wrote: > Hi, > > I am using the adonis function in the vegan package to determine effects of > different environmental factors in forest plant community composition in > different regions. I would like to first use adonis to remove the region > effect, this is, to fit a model like > > adonis_region<- adonis(community ~ region,permutations=999,method="bray") > > Where community is a presence/absence data matrix of species in forest > patches belonging to different regions. > > Then I would like to use the residuals of this model as the response > variable for some other analyses. I know I could use strata to model region > as a block variable, but this does not interest me, as afterwards I want to > perform another kind of analysis where I would like the region effect to be > removed. > > My problem is that I cannot figure out how to get residual values from the > adonis model. > > Any hint of some other kind of multivariate analysis that could solve this > problem is very welcome. > > Thanks in advance, > > -- > Alicia Valdés > Université de Picardie Jules Verne > Unité EDYSAN (Ecologie et Dynamique des Systèmes Anthropisés) > 1, rue des Louvels > F-80037 Amiens Cedex > France > tel:+33 322825775 > alicia.val...@u-picardie.fr > http://www.u-picardie.fr/edysan/ > > [[alternative HTML version deleted]] > > > _______________________________________________ > R-sig-ecology mailing list > R-sig-ecology@r-project.org > https://stat.ethz.ch/mailman/listinfo/r-sig-ecology > > [[alternative HTML version deleted]]
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