As to the tg space fit being bad due to variation see Marcus, 2000 in Hystrix.
--- morphmet <[EMAIL PROTECTED]> wrote: > > 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 > > __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com -- Replies will be sent to the list. For more information visit http://www.morphometrics.org
