The output of the get_view command does not save the size of the viewport.  Thus if you want to recreate an image for ray tracing so it will have the same size and scale, one also needs to save the viewport dimensions.  Is there some way to access this information?  The viewport command only sets the viewport.

Mark A. Saper, Ph.D.
Associate Professor of Biological Chemistry
University of Michigan

Biophysics, 3040 Chemistry Building
930 N University Ave
Ann Arbor MI  48109-1055 U.S.A.