I have some 3D particle data



I want to find the irregular bounding shape of the distribution. The image below shows an example distribution from three directions (x/y, y/z, x/z), as well as a spherical bounding box, which is a poor approximation to the true distribution.

3D particle distribution

For this particular use case, I wish to throw away particles near the edge of the distribution, since in my application these are subject to boundary effects. So, if I have a rough approximation of the bounding shape in 3D, I can scale this down and discard particles outside the re-scaled shape.

Solutions in interpreted languages (Python, R) preferable.

  • $\begingroup$ Can you provide some example data? $\endgroup$
    – tuomastik
    Jul 8 '17 at 10:32
  • $\begingroup$ updated, but the data format is unimportant $\endgroup$ Jul 8 '17 at 14:06

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