Hi Boaz, When you color a surface (e.g. GRASP surface) using electrostatic potential with the Surface Color tool it does show the correct colors on the slice if you are clipping the surface. This is described in the guide to volume data display http://www.cgl.ucsf.edu/chimera/tutorials/volumetour/volumetour.html#colorca... The colors are only assigned at the triangle vertices of the slice surface which can be seen by switching to "mesh" display in the Surface Capping dialog. To get finer resolution coloring increase the "Mesh subdivision factor" in the Surface Capping dialog from 1.0 to say 3.0 (giving ~9x more vertices). Press the Enter key after changing the number to see the effect. Tom Boaz Shaanan wrote:
Hi Tom,
Thanks a lot. While we're at it I have another question related to surface rendering. In the 'colour surface' window there is button that says 'colour sliced ...'. Does that mean that if I covered a molecule with surface and mapped a Delphi calculated potential map onto it, if I then slice into the molecule, the surface covering this slice will show the potential correctly ? That would be very nice but I'm just wondering whether I can believe what I see. Grasp used to do this nicely but I'd like to use chimera (and grasp is dead anyway as far as I'm concerned - I don't have SGI's). I'd appreciate your input.
Cheers,
Boaz