[Chimera-users] center of rotation

Elaine Meng meng at cgl.ucsf.edu
Thu Dec 30 15:17:44 PST 2010

Hi Bill,
If command "cofr sel" is too long, you could

(a) use the command "alias" to alias it to a shorter command, e.g.

alias ^blah cofr sel

which would then allow you to use the command "blah" 

or if you don't use the Command Line, (b) define your own keyboard shortcut

However, the latter requires some Python, on which I cannot advise.

On Dec 30, 2010, at 11:02 AM, Bill Montfort wrote:

> Thanks! This works well. If there were a quicker means for activating Set Pivot, this would be even better (e.g. keyboard or mouse combination). Cheers!
> On Dec 30, 2010, at 11:18 AM, Eric Pettersen wrote:
>> Alternatively, you can control-click on the atom to select it and then  
>> choose Actions->Set Pivot in the menus to make it the center of  
>> rotation.
>> On Dec 30, 2010, at 9:51 AM, Elaine Meng wrote:
>>> 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 
>>> 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

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