Hi Vincent, The atomspec in your command is slightly wrong -- probably you meant to intersect #2-10 with strand, for example: car style #2-10 & strand xsection rect width 0.1 You could also use parentheses around the atomspec in the command if that makes it clearer, e.g. car style (#2-10 & strand) xsection rect width 0.1 <https://rbvi.ucsf.edu/chimerax/docs/user/commands/cartoon.html#style> <https://rbvi.ucsf.edu/chimerax/docs/user/commands/atomspec.html#combinations> I hope this helps, Elaine ----- Elaine C. Meng, Ph.D. UCSF Chimera(X) team Resource for Biocomputing, Visualization, and Informatics Department of Pharmaceutical Chemistry University of California, San Francisco
On Jun 23, 2026, at 1:34 AM, Vincent CHAPTAL via ChimeraX-users <chimerax-users@cgl.ucsf.edu> wrote:
Hi,
I want to modify the width of beta strands, so I use the command: car style strand xsection rect width 1 and it works very well.
Now I want to modify only certain strands, so I use:
car style strand xsection rect width 1 car style #2-10 strand xsection rect width 0.1
for the later command, I get the error "expected a keyword". But, when I use the same type of command for helices it works well: cartoon style #2-10 width 0.1 thick 0.1
Is there something I'm doing wrong in the script or it is not possible for strands?
Thank you for your help. Vincent
-- Vincent Chaptal, PhD CNRS research director Team leader Drug Resistance and Membrane Proteins Lab
MMSB -UMR5086 7 passage du Vercors 69007 LYON FRANCE +33 4 37 65 29 01 https://mmsb.cnrs.fr/en/team/drug-resistance-and-membrane-proteins-drmp/
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