[chimerax-users] Measuring Angles in ChimeraX

[Elaine Meng]

Hi Yaikhomba,
I believe you need to get a newer version of ChimeraX, probably the daily build.

I don't remember exactly when the "angle" command was added, but the help page link you sent shows modification date Sept 2020 at the bottom:
<http://www.cgl.ucsf.edu/chimerax/docs/user/commands/angle.html>

ChimeraX 1.0 is from June 2020.

If you don't seem to have a command but you can see documentation for it, in general, first try getting a newer version of the program.

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


> On Nov 27, 2020, at 7:23 AM, Y. Mutum <ym337 at cam.ac.uk> wrote:
> 
> Hi 
> I am trying to measure angles between three atoms using ChimeraX by typing
> >>> angle  #1/a:1001 at FE, #1/d:1001 at FE,#1/a:141 at C
> 
> However, the log reports:
> angle #1/a:1001 at FE, #1/d:1001 at FE,#1/a:141 at C
> Unknown command: angle #1/a:1001 at FE, #1/d:1001 at FE,#1/a:141 at C
> 
> I have also tried to check if 'angle' is a valid command in the ChimeraX window I have opened.
> >>>usage angle
> In Log ---> "angle" is not a command name
> 
> However, angle does seem to be a valid command in ChimeraX. In the documentation here -- http://www.cgl.ucsf.edu/chimerax/docs/user/commands/angle.html.
> 
> I am using ChimeraX-1.0  ( version: 1.0 (2020-06-04))
> 
> I might have missed things out - Could you please give an idea of how i could measure angles using the command line in ChimeraX?
> 
> Thanks
> Yaikhomba