-------- Original Message -------- Subject: Re: software for shapes without labelled landmarks? Date: Thu, 9 Feb 2012 11:58:37 -0500 From: Dean Adams <[email protected]> To: [email protected] Andrea, Dryden and Mardia (1998) discuss the superimposition of configurations of unlabelled points (pp. 303-305). Essentially, optimal superimposition is achieved by obtaining the minimal Procrustes distances among objects, after translation, rotation, and scale, as well as permuting all landmark labels. I am not aware of any software implementing the approach, though the procedure is straightforward. Best, Dean -- Dr. Dean C. Adams Associate Professor Department of Ecology, Evolution, and Organismal Biology Department of Statistics Iowa State University Ames, Iowa 50011 www.public.iastate.edu/~dcadams/ phone: 515-294-3834 On 2/9/2012 10:49 AM, morphmet wrote:
-------- Original Message -------- Subject: software for shapes without labelled landmarks? Date: Mon, 6 Feb 2012 08:33:35 -0500 From: andrea cardini <[email protected]> To: [email protected] Dear morphometricians, please, any suggestion about software for geometric morphometric analyses of shapes without labelled landmarks? I mean something like potato chips outlines, where there is no single 'homologous' landmark. I seem to remember that there are methods for the analysis of outlines that, with some limitations, can be used for this, and also extensions of superimposition methods for unlabelled landmarks, but I know very little about it and nothing on software availability. Thanks a lot in advance for your help. Cheers Andrea Dr. Andrea Cardini Researcher in Animal Biology Dipartimento di Biologia, Universitá di Modena e Reggio Emilia, via Campi 213, 41100, Modena, Italy tel: 0039 059 2055017 ; fax: 0039 059 2055548 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: [email protected], [email protected], [email protected], [email protected] Webpage: http://sites.google.com/site/hymsfme/drandreacardini Datasets: http://ads.ahds.ac.uk/catalogue/archive/cerco_lt_2007/overview.cfm#metadata 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/
