Hi Jiaxuan, I don't know where you are looking that suggests you can use "at" -- instead to indicate atom name it is the @ symbol. The command would instead be something like distance #1.16/B:94@CA #1.35/B:94@CA How to write atom-specs in the command line is described in this page: <https://rbvi.ucsf.edu/chimerax/docs/user/commands/atomspec.html> I hope this helps, Elaine ----- Elaine C. Meng, Ph.D. UCSF Chimera(X) team Department of Pharmaceutical Chemistry University of California, San Francisco
On May 12, 2023, at 9:19 PM, Cheng, Jiaxuan (NIH/VRC) [F] via ChimeraX-users <chimerax-users@cgl.ucsf.edu> wrote:
Hi Elaine,
I met a problem when measuring the distance between two atoms. I entered “distance #1.16/B:94 at CA #1.35/B:94 at CA” , but the ChimeraX reports “expected a keyword”. Could you let me know how to solve it?
Thanks! Jiaxuan
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