[Chimera-users] [External] Re: The command like volume zone in X

Zheng, Fengwei Fengwei.Zheng at vai.org
Fri Aug 14 09:37:08 PDT 2020

Dear Elaine,

Got it, Thank you so much for your kind explanation! Stay safe and Have a great weekend!

From: Elaine Meng <meng at cgl.ucsf.edu>
Sent: Friday, August 14, 2020 12:34
To: Zheng, Fengwei <Fengwei.Zheng at vai.org>
Cc: chimera-users at cgl.ucsf.edu <chimera-users at cgl.ucsf.edu>
Subject: [External] Re: [Chimera-users] The command like volume zone in X

Hi Fengwei,
There is a "vop zone" command in Chimera similar to "volume zone" in ChimeraX.  Same function, but the keywords and syntax are different, see


E.g. something like:

vop zone #2 #0:.a 2

As for your other question, Chimera has a "precessionTilt" option to the "roll" command, but ChimeraX does not have this option currently.  Looking at this kind of motion makes me feel seasick, so I don't use it in my own work.


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

> On Aug 14, 2020, at 8:43 AM, Zheng, Fengwei <Fengwei.Zheng at vai.org> wrote:
> Dear Developer,
> I am wodering if there is a command of Chimera can achieve the same function like "volume zone" in ChimeraX? I tried the command "vol zone #2 near #0:.a range 2", but the chimera always said "unknow keyword #2"~
> Another thing is that I wonder if there is a command of ChimeraX can achieve the same function like "turn z 2 360 precess 20" in Chimera (to achieve the Wobble motion / "wiggle-rock" motion, like nutation in pymol)~
> The I tried 1.14, 1.15 and the latest daily built versions of Chimera.
> The ChimeraX version I used is 1.0, Many thanks!
> Best,
> Fengwei

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