If you decide to try that method, you should take into consideration some of the points I raised in my chapter in the "Blue book":
Rohlf, F. J. 1990. An overview of image processing and analysis techniques for morphometrics. Pages 37-60 in Proceedings of the Michigan morphometrics workshop (F. J. Rohlf, and F. L. Bookstein, eds.). University of Michigan Museum of Zoology, Ann Arbor. For some shapes, these shape descriptors can be very unstable (division by zero problems) and thus have some ugly statistical properties. -------------------- F. James Rohlf, Distinguished Professor, Dept. Ecology & Evolution, Stony Brook University, Stony Brook, NY 11794-5345 > -----Original Message----- > From: morphmet [mailto:[EMAIL PROTECTED] > Sent: Wednesday, March 02, 2005 9:41 AM > To: morphmet > Subject: Re: ornamentation > > Dear Hennig - the following paper should be of interest to you: > RJ White and L Winokur (2003) 'Quantitative description and > discrimination of butterfly wing patterns using moment > invariant analysis' Bulletin of Entomological Research 93, 361-374. > > Best Wishes > Don Kirkup > Herbarium, Royal Botanic Gardens, Kew. > England. > > > Dear Listers, > > I would like to know, if there is anybody out there working > with (or > > has done anything with) ornamentation, like sculpture of shells or > > colour pattern of organisms. Is it possible to quantify different > > types of ornamentation and compare them among one another, to > > understand changes of ornamentation during the growth process of an > > organism, for example? I'm not sure whether the software > available at > > Stony Brook can help, because most programs need landmark > data and the > > type of ornamentation I'm working with, give non-landmark data. Any > > help is appreciated. > > > > Best wishes > > Henning Scholz > > > > --------------------------------------- > > Dr. Henning Scholz > > Humboldt-UniversitÃt zu Berlin > > Museum fÃr Naturkunde > > Institut fÃr PalÃontologie > > InvalidenstraÃe 43 > > 10115 Berlin > > Tel.: +49-30-2093-8659 > > e-mail: [EMAIL PROTECTED] > > > > > > > > > > -- > > Replies will be sent to the list. > > For more information visit http://www.morphometrics.org > > > > -- > Replies will be sent to the list. > For more information visit http://www.morphometrics.org > -- Replies will be sent to the list. For more information visit http://www.morphometrics.org
