Hi Paul, I am not aware of such tool.
To extract the points in the experimental cloud that are within a given distance from the plane, use equation in: https://en.wikipedia.org/wiki/Distance_from_a_point_to_a_plane If your cloud of points behaves well enough, you can interpolate it first into a dense grid (for instance using cshep2d) and then extract only the points that are very close to the plane. What would you like to do next with those points on the 2D plane? If you just need to highlight them in 3D view, then scatter3 is your buddy. Regards, Rafael
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