Hi Mitchell;

If I understood what you want, it should work:

beta <- betadisper(vegdist(matrix), type="centroid")
beta$distances

This will give you the raw values and then you can move with your analyses.
But check the new paper by Baselga 2013 Ecography before using
dissimilarity. He has interesting information.

==========================================
Ricardo Ribeiro de Castro Solar (Curriculum
Vitś<http://lattes.cnpq.br/9924177207371692>
)
PhD Student - Entomology - Science Without Borders
Visit my blog! <http://photographyandconservation.wordpress.com/> / Rede
Amazônia Sustentável <http://www.redeamazoniasustentavel.org>
Mobile: +44 07956 126637 - Skype: rrsolar
UF Viçosa (Brazil) - Lancaster University (UK)
==========================================


On 22 April 2013 23:17, Mitchell, Kendra <kendrami@mail.ubc.ca> wrote:

> I've run betadisp on a set of communities and would now like to compare
> the distance for each sample from it's centroid to other measures such as
> alpha diversity.  Basically I want to check that increased dispersion isn't
> simply a reflection of overall diversity.  It seems like I should be able
> to pull that out of the disp object but I haven't figured out how.  thanks
>
> Kendra
>
> --
> Kendra Maas Mitchell, Ph.D.
> Post Doctoral Research Fellow
> University of British Columbia
>
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