Someone recently asked me if there was a way to display field lines with PyMOL or with an external plugin. Here's what I wrote:
It turns out that PyMOL recently grew the ability to display field lines. After you've run APBS, you'll have a map object called pymol-generated. Try this series of commands from the PyMOL prompt:
gradient my_grad, pymol-generated
ramp_new my_grad_ramp, pymol-generated
color my_grad_ramp, my_grad
I'm considering building this into the next version of the plugin.
Michael Lerner, Ph.D.
IRTA Postdoctoral Fellow
Laboratory of Computational Biology NIH/NHLBI
5635 Fishers Lane, Room T909, MSC 9314
Rockville, MD 20852 (UPS/FedEx/Reality)
Bethesda MD 20892-9314 (USPS)