Hi Ray,
I would give a look at:
Adams, D. C. 1999. Methods for shape analysis of landmark data from
articulated structures. Evolutionary Ecology Research. 1:959-970.
Adams, D. C., and F. J. Rohlf. 2000. Ecological character displacement
in Plethodon: biomechanical differences found from a geometric
morphometric study. Proceedings of the National Academy of Sciences,
U.S.A. 97:4106-4111.
You can use the mean of your species, I guess, for several analyses or a
subset of specimens with all three views. Be careful if there are
landmarks in common: they could be useful (for instance if they allow
you to register the different views - see Frost et al., 2003, for
another example of how to do that) or redundant (i.e., you'll have to
remove the common landmarks in one of the views) if you append matrices
of shape variables (another example in Cardini et al., 2005). The last
approach is the easiest and it's a kind of 'total evidence approach' but
you will still have to do the visualization of shape differences
separately for each structure.
If you're interested in the covariation between different views, I guess
you can explore that with PLS analyses (several papers by Corti, Fadda,
Rohlf, and many others ... and detailed examples described in Zeditch et
al., 2004, introductory book on geometric morphometrics).
Good luck
Andrea
Hello,
I am doing a morphometric study of a west African fish species. I have three
views that I am analyzing. I was wondering if the was a program
to combine the three separate analyses into to one. I do not
necessarily have the three views for each specimen. I am using the IMP
software package.
Thanks,
Ray Schmidt
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Dr. Andrea Cardini
Hull York Medical School
The University of York, Heslington, York YO10 5DD, UK
&
The University of Hull,Cottingham Road, Hull HU6 7RX, UK
tel. 01904 321752
fax 01904 321696
E-mail: [EMAIL PROTECTED]
http://www.york.ac.uk/res/fme/people/andrea.htm
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