How can I detect a data point inside / outside a non-convex hull in high dimensional data set?

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Ammar 2017-2-6

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https://ww2.mathworks.cn/matlabcentral/answers/323641-how-can-i-detect-a-data-point-inside-outside-a-non-convex-hull-in-high-dimensional-data-set

评论： Mojtaba Houballah 2018-12-11

Dear all, My question is: How can I detect a data point inside / outside a non-convex hull in high dimensional data set? There exist 3 MATLAB functions I found: "inpolyhedron", "pinpolyhedron" they are working up to 3D only, and "inhull" work with high dimensions but with convex hull only. Please, is there any other MATLAB function work with non-convex hull in high dimensional data set?

Regards Ammar

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Ammar 2017-2-7

Dear John D'Errico, I would like to thank you for your comment. I have three data sets 2D, 4D, and 38D and they form a non-convex hull and I am looking to test whether a new data point inside/outside that figure.

Kind regards Ammar