[Chimera-users] How to Create Isopotential Contours, not Surfaces, with Chimera

[Charles Letner, Ph.D.]

Hello all,
I have a map of electrostatic potentials.  Using volume viewer I am able
to display the surfaces at any potential value I would like (as well as
multiple values by having multiple bars in the volume viewer histogram).
Now, I would like to be able to take a slice through that potential
surface and see a line associated with a given value of the potential in
that slice - call that the contour.  I would like to have multiple
potential contours, each with a different constant value in that contour
(-10 for one contour, -20 for the next, -30 for the third, and so on-
call these the iso-potential contours).  This would allow the contours
of potential to be seen in a single plane. 
 
Seems like I am so close using planes but that just isn't working.  Am I
approaching this right and if so any hints would be appreciated?  If I
am off base with the approach, I sure would appreciate a nudge in the
right direction?  
 
Cheers,
Chuck
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