----- Forwarded message from [email protected] ----- Date: Mon, 15 Apr 2013 04:19:23 -0400 From: [email protected] Reply-To: [email protected] Subject: Re: multi-variate PGLS with GMM To: [email protected]
Dear Blake, You mean probably you want to perform a MANCOVA in PGLS with shape as predictor, size as covariate and X equal to ecological variables. Recently Adams presented an R script to do PGLS multivariate in R. You will find more details in this paper: Blankers, T., D.C. Adams, and J.J. Wiens. 2012. Ecological radiation with limited morphological diversification in salamanders. Journal of Evolutionary Biology. 25:634-646. http://www.public.iastate.edu/~dcadams/PDFPubs/2012-JEvolBiol-Blankers%20et%20al.pdf There you could find an analysis PGLS performed also on "size-free" shape data. Alternatively, you can perform PGLS in NTSYS by first saving your OTU covariance matrix with the module: Cluster - Cophenetic values - Method "PhyloCov" Then you add your OTU covariance matrix in the module "Regression" -> Mulviariate Matrix. Good luck Carlo [email protected] ha scritto: > > ----- Forwarded message from Blake Dickson <[email protected]> ----- > > Date: Thu, 11 Apr 2013 00:58:04 -0400 > From: Blake Dickson <[email protected]> > Reply-To: Blake Dickson <[email protected]> > Subject: multi-variate PGLS with GMM > To: "[email protected]" > > Hi All, > > I have a set of 3D procrustes co-ordinates for a bunch of taxa I > would like to test against ecological characteristics. I am > wondering whether it is possible to perform a multivariate PGLS > - controlling for both phylogeny and body size, and if so what is > the best way to go about it. > > Cheers, > Blake > > Blake Dickson, School of BEES > University of New South Wales, > NSW, Australia > [email protected] > > ----- End forwarded message ----- > > > > > ----- End forwarded message -----
