A few things...
On Mon, 2003-12-08 at 11:52, [EMAIL PROTECTED] wrote: Sample size is not as big an issue as it once was. The only limitation in Morpheus is that it currently uses integers for indexing into lists, which in computer speak means you can't have more that 32,000 of anything - objects, points, dimensions. I think tps uses a more modern indexing with the limit, if there is one, in the gajillions. > Will any of these packages or modules (like Morpheus or the tps > modules) allow me to do Procrustes (least squares) alignment of 72 > landmarks on 4,431 subjects? I mean a full general procrustes (all > landmarks-all subjects simultaneously). If this is too large a dat This is not, technically speaking, a full Procrustes analysis. "Full" refers to the algorithm estimating a least-squares scaling parameter for each specimen. Most morphometrics uses a "partial Procrustes analysis" where all specimens are scaled to the same size (usually, unit centroid size) without regard to the least-squares aspect of this. > a > set, does anyone know what the landmark and subject limits are? I have > been reading the websites and the documentation that exists, but I > haven't seen anything with details like this. Also will any of this > software permit me to align point clouds or polygonal meshes with > 100,000 points or polygons or more? > > Thank you for any help you can provide, > > Kathleen M. Robinette, Ph.D. > Principal Research Anthropologist > Air Force Research Laboratory > > > == > Replies will be sent to list. > For more information see http://life.bio.sunysb.edu/morph/morphmet.html. -- Dennis E. Slice, Ph.D. Department of Biomedical Engineering Division of Radiologic Sciences Wake Forest University School of Medicine Winston-Salem, North Carolina, USA 27157-1022 Phone: 336-716-5384 Fax: 336-716-2870 == Replies will be sent to list. For more information see http://life.bio.sunysb.edu/morph/morphmet.html.
