From: John Stone (johns_at_ks.uiuc.edu)
Date: Mon May 12 2003 - 11:07:32 CDT

Hi,
  Yes, it is possible to create animatios of structures with
changing numbers of atoms. This is not a built-in feature of
VMD however; you'll need to write a Tcl script to do the work
for you. The method for making such an animation would be similar
in principle to these two scripts, except that you'll need to load
each frame as a separate molecule in VMD, rather than as timesteps
into a single molecule.
http://www.ks.uiuc.edu/Research/vmd/script_library/scripts/animatepdbs
http://www.ks.uiuc.edu/Research/vmd/script_library/scripts/trajectory_movie_short

You should be able to modify these two scripts to create an animation
using structures loaded as separate molecules.

If you need more help with this, let us know.

Thanks,
  John Stone
  vmd_at_ks.uiuc.edu

On Mon, May 12, 2003 at 12:50:17PM +0300, yifat b wrote:
> Hi all,
> Does anyone know if it's possible to make an animation with different
> numbers of atoms at each frame?
> Thanks,
> Yifat.

-- 
NIH Resource for Macromolecular Modeling and Bioinformatics
Beckman Institute for Advanced Science and Technology
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