Dear Morphometricians, I'd like to ask your advice on a couple of issues: 1) What can be done (if anything) when the tangent space approximation of the shape space is bad? I am not talking about small problems due to outliers. I am considering a case when the approximation is bad because the biological variation in the sample is really large. 2) It is often difficult to sample landmarks all over a structure (unless using semilandmark on curves etc.). Often, landmarks tend to be more dense in some anatomical regions and less in others. Is there any risk of 'overfitting' the regions with more landmarks during the Procrustes superimposition? Are there other issues that may be related to large differences in landmark density in a structure? Thanks a lot for your help. Cheers
Andrea 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 ------------------------------------------------------------------------- Visita http://domini.interfree.it, il sito di Interfree dove trovare soluzioni semplici e complete che soddisfano le tue esigenze in Internet, ecco due esempi di offerte: - Registrazione Dominio: un dominio con 1 MB di spazio disco + 2 caselle email a soli 18,59 euro - MioDominio: un dominio con 20 MB di spazio disco + 5 caselle email a soli 51,13 euro Vieni a trovarci! Lo Staff di Interfree ------------------------------------------------------------------------- -- Replies will be sent to the list. For more information visit http://www.morphometrics.org
