Dear friends, I understand that one of the main consecuences of applying alignment tranformations to landmark data, such as the GLS, is the elimination of the effects of size. In this case, I also understand that size is assumed to be isometric. Nevertheless, I found a paper explaining that allometric residues can still persist in the aligned coordinates, since centroid size is an isometric parameter. If this is true, then the residues of the procrustes fit, which are used in posterior projections and multivariate analyses, are still "contaminated" by allometric variation. I have been trying to interpret correctly this statement, but still have my doubts.
I will be grateful with any advice with respect to this question. Thank you very much. Pablo Pablo Jarr�n Center for Ecology and Conservation Biology Biology Department Boston University [EMAIL PROTECTED] == Replies will be sent to list. For more information see http://life.bio.sunysb.edu/morph/morphmet.html.
