Kelley, syntax is something like this:
set light, [ 0.0, 0.0, -1.0 ] If you want to shine light directly from above I would give set light, [ 0.0, -1.0, 0.0 ] a shot. i.e. with a vector from [0,0,0] to [ 0.0, -1.0, 0.0 ], but that is just a guess. I have not seen any documentation on how the direction of light is defined in Pymol. Alternatively you can write out the scene for PovRay and try to play around with the settings there. Happy Pymoling Carsten -----Original Message----- From: Kelley Moremen [mailto:more...@arches.uga.edu] Sent: Thursday, December 12, 2002 17:07 To: pymol-users@lists.sourceforge.net Subject: [PyMOL] Lighting questions: round 2 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? Thanks, Kelley 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 Email: more...@arches.uga.edu (send email with large attachments to: more...@bmb.uga.edu) Website: http://bmbiris.bmb.uga.edu/moremen/lab/