From: Giacomo Fiorin (
Date: Thu Feb 21 2019 - 13:31:40 CST

The old volutil utility has a -collapse option. It should work OK for a
map of size comparable to an ion-channel system. The newer voltool may
have similar options.


On Thu, Feb 21, 2019 at 2:11 PM Bassam Haddad <> wrote:

> Hi Everyone,
> I am working with ion channels, and using constant E-Field simulations. It
> would be nice to plot the voltage as a function of the z-axis, however I am
> unsure how to retrieve this information from the volumetric .dx file. Is
> there a VMD plugin available to extract this info, or will I have to write
> a script. If the latter is the case, could someone point me in the right
> direction?
> Thank you,
> Bassam

Giacomo Fiorin
Associate Professor of Research, Temple University, Philadelphia, PA
Contractor, National Institutes of Health, Bethesda, MD