From: Axel Kohlmeyer (
Date: Thu Feb 23 2006 - 00:55:53 CST

On Thu, 23 Feb 2006, Xifang Wang wrote:

XW> Hi,

XW> I'm a novice in this. I know this question (or ones similar) was
XW> posted many times. I looked all up, tried them , and still could not
XW> get it to work properly. Here's the difficulty: I had no trouble
XW> generating the .dx file and importing it into VMD using read_dx.
XW> Isosurface works well. But when I tried to use the volume data to
XW> color the surface by "Volume", I got invariably a uniform white
XW> color. I thought maybe the electronic potential was not calculated
XW> propperly. So I tried one of the demos, and I got the same uniform
XW> color. Could some advise me how to correct it?

the white surface is most likely due to the fact that your graphics
card and/or its driver do not support surface texturing. please post
the startup message from your VMD command window.


XW> Thanks a lot.
XW> Xifang

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.