Dont know how to do this in CCP4MG or POVRAY but you can do it in GIMP with the following
Layer>Transparency>Add Alpha Chanel Select>By color (Select the background with your mouse) Edit>Cut (to remove the background) -----Original Message----- From: CCP4 bulletin board on behalf of Ray Bourdeau Sent: Fri 6/1/2007 1:54 PM To: [email protected] Subject: [ccp4bb] ccp4mg povray rendering Hi all, I am generating images using ccp4mg (which is wonderful by the way), but I can not figure out how to generate a povray input file that will yield an image with a transparent background. Getting a transparent background using the screen snapshot works fine, but I would like to have a rendered image. I have tried adding the +UA tag (which I believe should render the alpha channel as transparent) as a povray command line option so that my input looks like such: povray +A +J0 +Q9 +UA +H2400 +W2400 input_file.pov Yet this still does not give me a transparent background. When generating povray input files, does ccp4mg output the background as the alpha channel or do I need to go about this a different way? Thanks, Ray -- Raymond W. Bourdeau University of Chicago - Tang Lab 929 E 57th St. W423J Chicago, IL 60637 tel: 773-702-4608 email: [EMAIL PROTECTED] email: [EMAIL PROTECTED]
