How to create mesh from coordinates

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sumana
sumana 2016-12-27
评论： Viraj Gandhi 2021-2-26
Hi,
I have a 3D object (as shown in figure) defined entirely by x,y,z coordinates. Below shows the plot using scatter3().
I do not have the triangulation information.
My ultimate goal is to convert it to an .*stl file. How do I mesh it? delaunay(x,y,z) is giving something like this which is not correct.
Do I need some kind of algorithm to mesh it ?
Or else can I convert the coordinates to a .ply file to use meshlab to mesh it ? I don't know how to convert. Since this is a closed figure meshgrid() etc. are not working.
Thank you for the help.

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采纳的回答

Kaustubh Tiwarekar
Kaustubh Tiwarekar 2020-4-21
I know its late. Bu8t this question needs a better answe.
Try referin to this link
https://in.mathworks.com/matlabcentral/fileexchange/63731-surface-reconstruction-from-scattered-points-cloud-open-surfaces

更多回答（1 个）

Walter Roberson
Walter Roberson 2016-12-28
If you have R2014b or later consider using boundary() to generate an outside hull.
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Walter Roberson
Walter Roberson 2016-12-28
编辑：Walter Roberson 2016-12-28
pc = pointCloud( [x(:), y(:), z(:)] );
pcwrite(pc, 'OutputFileName.ply');
This requires the Computer Vision Toolbox.

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