Yes, I am sure Rohlf will respond to this as soon as he checks it out. In the meantime, setting the scaling involves generating a factor that is saved with the images and used by the tps programs (and morpheus) to convert pixel measurements into user units (cm, mm, whatever). Zooming is the magnification of images to better see details for digitizing and should be dynamic - zoom in on a section, digitize a point, zoom out, move on. Allowance for the zoom should be automatic.
-dslice morphmet wrote: > I'm sure James Rohlf will confirm this (or not), but my understanding of > tpsDig is that the zoom is actually a scaling function applied to and > saved with each specimen, so it can be set once per speciment only. > > Martin > > > morphmet wrote: >> Hello, morphmet list, >> >> When I zoom in and out in tpsDIG, the dots shift. This defeats the >> purpose, obviously, so I'm guessing I'm either missing a function that >> the program offers, or else the idea is that one shouldn't place >> landmarks on different parts of the same image at different >> magnifications. (The specimens are helically coiled snail shells, and >> the features in the earlier whorls - though putatively homologous - are >> vastly tinier than in the later coils, so being able to zoom in at the >> top would really help.) Can someone shed some light on this? >> >> Thanks, >> Leah Reilly >> (CUNY EEB Ph.D. student) >> >> > > > -- Replies will be sent to the list. For more information visit http://www.morphometrics.org
