-------- Original Message -------- Subject: IMP DisparityBox issues Date: Thu, 18 Jun 2009 10:54:59 -0700 (PDT) From: Matthew Burton-Kelly <[email protected]> To: morphmet <[email protected]> IMP users and other associated computer people, I'm having some issues and I'm not sure where they are coming from. The first time I see problems during data processing is in DisparityBox, hence the subject, but CoordGen also displays very odd configurations of landmarks. When I load a XYXY..CS file into DisparityBox, the small image of the landmarks in the corner looks fine. After I click "Find Grand Consensus Mean (Specimens)" however, I get the fainter landmark cloud with the crosses denoting the mean positions (expected), but also at times a smaller landmark configuration in the middle (usually only a single specimen). If I plot these data in PCAGen, one specimen always plots way off to the side. If I remove the problematic specimen(s) from the file, everything is fine, but I'd like to track down the source of the problem. I run the data through a number of DOS batch files before this point, and I'm worried that something may be getting FUBARed along the way. The TPS files going into CoordGen look fine to my eye, but all of the landmarks don't display for some reason in tpsDig, as if the window extent is not large enough (this is a different problem, I'm assuming). The landmarks are created using Resample around the outline of a clam shell from a single point. I'm aware that this is probably not the best way of doing things (lack of homology and all that), but I'm experimenting with the method. Thanks for any light that can be shed on the problem, Matt Burton-Kelly ----------------------------- Matthew Burton-Kelly, M.S. Graduate Student Department of Geology and Geological Engineering University of North Dakota (802) 922-3696 [email protected] <mailto:[email protected]> [email protected] <mailto:[email protected]> http://uweb.und.nodak.edu/~matthew.burton.kelly/ -------------------------------------------- "About thirty years ago there was much talk that geologists ought only to observe and not theorize; and I well remember someone saying that at this rate a man might as well go into a gravelpit and count the pebbles and describe the colors. How odd it is that anyone should not see that all observation must be for or against some view if it is to be of any service!" -Charles Darwin, in an 1861 letter to Henry Fawcett. -- Replies will be sent to the list. For more information visit http://www.morphometrics.org
