How can I find the data point inside/outside the polyhedron shape ? i.e. more than 3D.

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Ammar 2017-1-13

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评论： Ammar 2017-1-14

Dear all, I would like to ask a question: How can I find the data point inside/outside the polyhedron shape? i.e. the shape in more than 3D dimensions. I know the function "inpolygon" in MATLAB give us the result if the data point inside/outside polygon in 2D and 3D, but what about more than 3D?

Kind regards Ammar

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John Chilleri 2017-1-13

Depending on your polyhedron, it might work if you were to run inpolygon on all the profiles and whichever points lie in all are within the polygon.

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Answer 1

the cyclist 2017-1-13

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I cannot endorse it myself (because I have never used it), but you could try the in_polyhedron function from the File Exchange.

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Ammar 2017-1-13

Dear "the cyclst", I would like to thank you for this answer. Please, I tried to use this function but depend on my understanding it is work just for 3D and I am looking for a function work with more than 3D, i.e. 4, 5,... dimensions. Regards

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Answer 2

Matt J 2017-1-13

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If it is a convex polyhedron, you can use INHULL.

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Image Analyst 2017-1-14

You also have answers in your duplicate question. Now you have TWO places to look. I don't know why you want that situation. Don't forget to check both threads from now on.

Ammar 2017-1-14

Dear Image Analyst, thank you very much for this comment. Yes, I just want to make the question more simple. I am looking for a function in MATLAB to find the point inside/outside the polygon in high dimensions (i.e. more than3D). Thanks.

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