Hi Dmitry, ChimeraX doesn't have any map cylindrical averaging capability. But you could do it by adding together say 360 copies of the map each copy rotated by 1 degree about the cylinder axis relative to the previous copy. Here's an example. open 1080 from emdb volume copy #1 perframe "turn z 1 model #1 coord #1; vol add #2,1 inplace true" frames 359 save cylinder_average.mrc model #2 Here the cylinder axis is the z axis and I use the perframe command to rotate and add 359 copies separated by 1 degree steps to the original map. Tom 
On Sep 3, 2025, at 11:06 AM, Dmitry Semchonok via ChimeraX-users <chimerax-users@cgl.ucsf.edu> wrote:
Dear Colleagues,
I need to perform cylindrical averaging of membrane protein density maps (MRC files) to generate radial density profiles for membrane thickness analysis.
Does ChimeraX have built-in functionality for this, or are there existing scripts/plugins available?
If not, could you provide guidance on the best approach to implement this?
Thank you!
Kind regards, Dmitry
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