[Chimera-users] how to create a sphere in Chimera

Elaine Meng meng at cgl.ucsf.edu
Wed Mar 4 08:46:07 PST 2020

Hi Sc Ke,
There is more than one way.  Say you have already selected the single atom.  Then,

(A) to put a marker (essentially a fake atom) at that position, command “measure center”, for example:

measure center sel mark true radius 4.0 color pink model #8
transparency 50 #8

see manual for command options

(B) to put a spherical surface model at that position, command “shape sphere”, for example:

shape sphere radius 8.5 center sel color orange modelid #8
transparency 60 #8

see command options

I hope this helps,
Elaine C. Meng, Ph.D.                       
UCSF Chimera(X) team
Department of Pharmaceutical Chemistry
University of California, San Francisco

> On Mar 4, 2020, at 2:40 AM, Ke Shyue-Chu <ke at gms.ndhu.edu.tw> wrote:
> Hi,
> I would like to know how to create a sphere of certain radius around a selected atom, for visualization purpose.
> Thank you.
> Sc Ke
> Professor
> Department of Physics
> National Dong Hua University
> Hualien, Taiwan

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