Hi Tina- We did a bit of work looking at how different outline methods compared, when attempting to classify avian specimens into age categories based on the outline of tailfeathers, using several semi-landmark methods and several pure outline methods.
The paper is available at http://www.frontiersinzoology.com/content/pdf/1742-9994-3-15.pdf and while it is certainly not definitive, we found semi-landmarks to be at least as effective as pure outline methods, when used as input data to a CVA analysis. This paper also includes some useful references. -Dave H. David Sheets, PhD Chair,Dept of Physics, Canisius College 2001 Main St Buffalo NY 14208 ---- Original message ---- >Date: Wed, 09 May 2007 17:32:41 -0400 >From: morphmet <[EMAIL PROTECTED]> >Subject: RE: Outlines (Fourier) vs. Semi-landmarks >To: morphmet <[email protected]> > >Hi Tina, > >Could you keep me updated on the responses you get, as this particularly >interests me as well. > >Cheers >Dominique Adriaens > > > >Prof. Dr. Dominique Adriaens >Ghent University >Evolutionary Morphology of Vertebrates & Zoology Museum >K.L. Ledeganckstraat 35, B-9000 Gent >BELGIUM >tel: +32 9 264.52.19, fax: +32 9 264.53.44 >E-mail: [EMAIL PROTECTED] >URL: http://www.fun-morph.ugent.be/ >http://www.zoologymuseum.ugent.be/ > > > >-----Original Message----- >From: morphmet [mailto:[EMAIL PROTECTED] >Sent: woensdag 9 mei 2007 18:34 >To: morphmet >Subject: Outlines (Fourier) vs. Semi-landmarks > >Hello to all! > >I am wondering which method is more appropriate for shape analysis of rodent >mandibles - outlines (Elliptic Fourier Analysis) or semi-landmarks. >Mandibles are from different genera of rodents. > >I know that with outlines I can't include structures 'inside' the outline >(on the mandible) but I think with outlines I can capture the shape more >precisely. > >What I am wondering is which method gives more accurate results (besides the >influence of differently captured data). > >Thank you very much for your replies! > >Tina Klenovsek > >Department of Biology >University of Maribor >Slovenia > >-- >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
