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[Jan Stránský <question698980@xxxxxxxxxxxxxxxxxxxxx>]

Question #698980 on Yade changed:
https://answers.launchpad.net/yade/+question/698980

    Status: Open => Answered

Jan Stránský proposed the following answer:
Thanks for clarification.

To remove particles / use only some particles, you have several options.

One is to extract particles and use only those you need in reset
simulation or a new simulation.

Another option is to use O.bodies.erase [1].
###
circleCenter = Vector3(1,2,3)
circleRadius = 123
for b in O.bodies:
    d = (b.state.pos - circleCenter).norm() # distance of circleCenter and center of "b"
    if d < circleRadius:
        O.bodies.erase(b.id)   
###

Cheers
Jan

[1] https://yade-
dem.org/doc/yade.wrapper.html#yade.wrapper.BodyContainer.erase

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