[Chimera-users] center of rotation

[Elaine Meng]

Hi Bill,
You can use the command "cofr" with specified atoms (including "sel" as the specification if the atom or atoms are selected).
<http://www.cgl.ucsf.edu/chimera/docs/UsersGuide/midas/cofr.html>

There are several different rotation modes, and you can switch among them using either "cofr" or the Rotation tool (under Tools... Movement in the menu).
<http://www.cgl.ucsf.edu/chimera/docs/UsersGuide/sideview.html#rotation>

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

On Dec 29, 2010, at 3:55 PM, Bill Montfort wrote:

> I'm returning to chimera after many years away and am quite impressed with the program, save for one issue: rotating about the screen center. My favorite way of viewing structures is for the rotation to be about a center of my choosing, as is common in many graphics programs (e.g. COOT). I would prefer to pick an atom on the screen and have this become the rotation center.  Is there a simple way to accomplish this in chimera? A small point perhaps, but one that is frustrating for me.......
> 
> Bill Montfort