From: John Stone (
Date: Thu Feb 21 2008 - 17:22:36 CST

  The issue Axel is likely referring to is the difference between
face-centered and point-centered samples in volumetric maps. The plugin
authors may have attempted to convert between the two by padding the array,
but that's not the right way to do it in any case. We'll have to contact
the author of these plugins and determine why they added the padding.
If it's the issue above, this is correctly handled by scaling the grid
axes and not by padding the array. We'll have to see what they say.

  John Stone

On Thu, Feb 21, 2008 at 06:18:50PM -0500, Axel Kohlmeyer wrote:
> > What do you mean by "this is a hack to have the proper spacing with
> > periodic display"? I don't really follow. Is it copying the first
> > element in each dimension to the extra space? ???
> it does not look like it. please see for yourself.
> i remember that this was needed for older versions of VMD.
> cheers,
> axel.
> >
> > thanks,
> > wes
> >
> >
> --
> =======================================================================
> Axel Kohlmeyer
> Center for Molecular Modeling -- University of Pennsylvania
> Department of Chemistry, 231 S.34th Street, Philadelphia, PA 19104-6323
> tel: 1-215-898-1582, fax: 1-215-573-6233, office-tel: 1-215-898-5425
> =======================================================================
> If you make something idiot-proof, the universe creates a better idiot.

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