Dear Pymolers,

After my last round question on lighting it became clear that the relevant setting for positing the light source for the ray traced image was “light”.  There are three parameters to be set with the “light” setting, but it is not clear what each value refers to (is it X,Y,Z for the position of the light source?).  More importantly, what is the syntax for the alteration of the light setting from the command line? I am running Pymol in OS X and do not have access to the GUI panel for changing settings. I have tried numerous variations on the theme of:
set light=-0.4, -0.4, -1.0
Any clues as to the appropriate syntax for altering the lighting to originate from straight above the object in the image window?


Dr. Kelley Moremen
Associate Professor
Complex Carbohydrate Research Center
Department of Biochemistry and Molecular Biology
University of Georgia, Athens, GA 30602-7229
Office (706) 542-1705    Fax: (706) 542-1759
(send email with large attachments to: