----- Forwarded message from al cardini -----
Date: Thu, 15 Nov 2012 15:09:25 -0500
From: al cardini
Reply-To: al cardini
Subject: Re: UPGMA: Euclidean and Procrustes distances
To: morphmet@morphometrics.org
Dear Rodrigo,
please, read my suggestions below.
> The questions:
>
> 1 - Are UPGMA analyses using Euclidean distances and Procrustes distances
> equivalent?
Generally yes, if those ED are computed on shape coordinates projected
in the tangent space and the tangent space approximation is good
(which you can check in TPSSmall).
>
> 2 - Is there any package in which I could simply enter the Procrustes
> distances and get a UPGMA tree with bootstrap values?
If I remember well, PAST is bootstrapping variables. For Procrustes
shape coordinates or their inear combinations (e.g., PCs), that's
unlikely to make sense. I believe we briefly discussed this in a paper
(Cardini & Elton, 2008, in the Biol. J. Linn. Soc. - pdf in my
publication webpage). David Polly, if I remember well, made similar
comments in another paper, which we might have cited (my apologies,
David, if we did not!).
Cheers
Andrea
>
>
> Thank you in advance,
>
> Rodrigo
>
>
>
> ----- End forwarded message -----
>
>
>
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Dr. Andrea Cardini
Researcher in Animal Biology
Dipartimento di Scienze Chimiche e Geologiche, Università di Modena e
Reggio Emilia, l.go S. Eufemia 19, 41121 Modena, Italy
Honorary Fellow
Functional Morphology and Evolution Unit, Hull York Medical School
University of Hull, Cottingham Road, Hull, HU6 7RX, UK
University of York, Heslington, York YO10 5DD, UK
Adjunct Associate Professor
Centre for Forensic Science , The University of Western Australia
35 Stirling Highway, Crawley WA 6009, Australia
E-mail address: alcard...@gmail.com, andrea.card...@unimore.it,
andrea.card...@hyms.ac.uk, andrea.card...@uwa.edu.au
Webpage: http://sites.google.com/site/hymsfme/drandreacardini
Datasets:
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Editorial board for:
Zoomorphology:
http://www.springer.com/life+sciences/animal+sciences/journal/435
Journal of Zoological Systematics and Evolutionary Research:
http://www.wiley.com/bw/journal.asp?ref=0947-5745&site=1
Hystrix, the Italian Journal of Mammalogy:
http://www.italian-journal-of-mammalogy.it/
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