如何在数据点上创建3D多边形/网格？ [英] How do I create a 3D polygon/mesh over data points?

问题描述

我有一个数据点数组， Points = [X，Y，Z] ，其中 X ， Y & Z 是 nby-1 向量。 x ， y 和 z 值是

I have an array of data points, Points = [X,Y,Z], where X,Y & Z are n-by-1 vectors. The x, y and z values are the result of a blackbox.

以下是要点示例：

^{图。 3D点}

我想生成类似以下内容的东西：

I want to generate something that looks like this:

^{图。网格绘图}

如果无法绘制出图形，则就像是变形的圆柱体。凸包不起作用，因为几何中的凹陷会被忽略。

If you can't make the drawing out, it's something like a deformed cylinder. A convex hull does not work because there are dips in the geometry that would be ignored.

推荐答案

我一直在寻找的解决方案是Matlab中的 boundary 函数可在这些点周围创建一个收缩包装。
很难找到此解决方案，因为文献将其称为凹面船体，Matlab将其称为非凸面多边形，因此对前者的搜索未显示任何内容。
网格对象

The solution I was looking for was the boundary function in Matlab which creates a "shrink wrap" around the points. It was hard to find this solution because while research & literature refers to this as a "Concave Hull", Matlab refers to it as "Nonconvex polygons" so searches for the former did not turn up anything. Meshed Object

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