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Re: [Question #680375]: How to delete 10% percent of small particles?

To: yade-users@xxxxxxxxxxxxxxxxxxx
From: Robert Caulk <question680375@xxxxxxxxxxxxxxxxxxxxx>
Date: Tue, 23 Apr 2019 09:22:33 -0000
Reply-to: question680375@xxxxxxxxxxxxxxxxxxxxx
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Question #680375 on Yade changed:
https://answers.launchpad.net/yade/+question/680375

    Status: Open => Answered

Robert Caulk proposed the following answer:
I guess it's a python question.

import numpy as np

def delBelowPercentile(a, q):
    maxRad = np.percentile(a,q)
    for b in bodyRadius:
       if b[0].shape.radius <= maxRad:
           O.bodies.erase(b[0].id)

bodyRadius = []
for b in O.bodies:
    if isinstance(b.shape,Sphere):
        bodyRadius.append([b,b.shape.radius])

bodyRadius.sort(key=lambda x: x[1])
delBelowPercentile(bodyRadius,10)

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