[Chimera-users] icosahedral annulus

Elaine Meng meng at cgl.ucsf.edu
Mon Nov 16 11:28:48 PST 2020

Hi Pranav,
I believe that you can:

(1) use the "shape icosahedron" command to make an icosahedral surface

(2) then use the "mask" command specifying the map and the surface (icosahedron) that you just made

The mask command has a "slab" option to include some distance from both sides of the surface.

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

> On Nov 16, 2020, at 10:29 AM, Pranav Shah <p.shah.lab at gmail.com> wrote:
> Hi Elaine,
> i was wondering if there was an "easy" way to create an icosahedral
> ring-mask using chimera's shape and mask commands. At the moment, I am
> creating two icosahedral shapes of big and small radii and them
> subtracting the small one from the big one, but this results in
> inconsistent results i.e the mask does not enclose the volume I wish
> to cover.
> Best,
> Pranav

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