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Jerry said: > Does anyone have this experience of rotating molecules along any > other specified axis and keeping the same view point as usual? I have, but its complicated. (Interpolated) rotation about an arbitrary axis is not a straightforward operation, especially if said axis does not pass through the origin. You are well advised to describe your rotation as a quaternion transformation, calculate the interpolations in quaternion space, convert them to the pymol "transformation matrices" (which are not conventional transformation matrices) and apply those, saving frames as you go. But you can have a lot of fun figuring out how to do it if you can spare the time. It may be a simpler process these days though. That was a couple of years ago. James On Aug 1, 2008, at 2:06 PM, Jerry McCully wrote: > Hi , all: > > Sorry for this off-topic question. > > When you make movies, Pymol usually allows you rotate molecules > along x, y, or z axis. > > The view point is always from Z axis. > > Does anyone have this experience of rotating molecules along any > other specified axis and keeping the same view point as usual? > > Thanks a lot. > > Jerry -- James Stroud UCLA-DOE Institute for Genomics and Proteomics 611 Charles E. Young Dr. S. Los Angeles, CA 90095 http://www.jamesstroud.com