I have just uploaded new versions of tpsRelw and tpsRegr to the sbmorphometrics.org server. The changes to tpsRelw fix a problem noticed by Diego Astúa when using Boas coordinates and sliding semilandmarks at the same time (the sliding operation had lost the original centroid size of each specimen). I have now added a new option to tpsRelw to specify which size to use. Because the position of semilandmarks along a curve is somewhat arbitrary (which is why they need to slide) they affect the computed centroid size. The new option allows one to use the initial centroid size before sliding anyway or to do a more complex correction: size is first computed using just the non-sliding landmarks and then after sliding the specimen is scaled so the centroid size for the non-sliding landmarks is the same as before. Then the new centroid size using all points is computed. Often seems to make only very small differences but the option was added to allow for unusual situations.
A change was also added to make some of the other windows more visible on high resolution monitors. I also changed the scaling for the windows displaying the estimated shape using the thin-plate spline. It seems that by including size one sometimes need to display more extreme deformations. The windows should now scale better. Thanks again to Diego Astúa for alerting me to the problem. F. James Rohlf Distinguished Professor, Emeritus and Research Professor Depts: Anthropology and Ecology & Evolution Stony Brook University -- You received this message because you are subscribed to the Google Groups "Morphmet" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/morphmet2/Mailbird-67d34967-156a-4ac5-b2fb-7ae0f8e8f98b%40stonybrook.edu.
