or, you can simply write the coordinates to a file in PDB format and 
load it in PyMOL.

According to my experience, this way is more flexible and you can 
manipulate the cloud easily. For example, you can change the color of 
the cloud, or show it as spheres of different radii. But for a cgo, you 
can not change its color on the fly.

best,
Hongbo Zhu

On 05/11/2010 04:49 PM, pymol-users-requ...@lists.sourceforge.net wrote:
> Message: 3
> Date: Tue, 11 May 2010 09:04:51 -0400
> From: Jason Vertrees<jason.vertr...@schrodinger.com>
> Subject: Re: [PyMOL] drawing a cloud of points?
> To: Jose Borreguero<borregu...@gmail.com>
> Cc: pymol mailing list<pymol-users@lists.sourceforge.net>
> Message-ID:
>       <aanlktimxtx2kr5bag4znzcylmux_7lcnw_n7cfz2p...@mail.gmail.com>
> Content-Type: text/plain; charset=ISO-8859-1
>
> Hi Jose,
>
> Depending on the number of points you could (1) create CGO objects for
> each; (2) use the pseudoatom command supplying the "pos" parameter for
> each particle.  For more info check out
> http://www.pymolwiki.org/index.php/Pseudoatom  and
> http://pymol.sourceforge.net/newman/user/S0500cgo.html  for starters.
>
> Cheers,
>
> -- Jason

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