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If you don't seem to have a command but you can see documentation for it, in general, first try getting a newer version of the program.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@cam.ac.uk wrote:
Hi I am trying to measure angles between three atoms using ChimeraX by typing
angle #1/a:1001@FE, #1/d:1001@FE,#1/a:141@C
However, the log reports: angle #1/a:1001@FE, #1/d:1001@FE,#1/a:141@C Unknown command: angle #1/a:1001@FE, #1/d:1001@FE,#1/a:141@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