[Chimera-users] center of rotation

Elaine Meng meng at cgl.ucsf.edu
Thu Dec 30 16:05:14 PST 2010

Silly me, there is already a keyboard shortcut "cr" to set center of rotation at the selected atom(s):


On Dec 30, 2010, at 3:17 PM, Elaine Meng wrote:

> 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
> <http://www.cgl.ucsf.edu/chimera/docs/ContributedSoftware/accelerators/accelerators.html>
> <http://www.cgl.ucsf.edu/chimera/docs/ContributedSoftware/accelerators/accelerators.html#adding>
> However, the latter requires some Python, on which I cannot advise.
> Elaine
> 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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