Importing and exporting mesh data between MATLAB and MeshLab

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Evenor
Evenor 2017-12-26
编辑： DGM 2025-7-27
Given a 2D surface embedded in 3D, I generate its Delaunay triangulation using MATLAB's delaunay and delaunayTriangulation methods. However, they do not produce good watertight results.
I save the triangulation mesh saved as list of vertices x in 3D and list of triangles T (each row is a triangle, in which there are 3 indices, refering to the vertices in x (e.g. T(i) = [3 7 15] is the triangle with vertices x(3), x(7) and x(15)).
I want to export this data to MeshLab, edit and fix it there, and then import the result from MeshLab back to MATLAB. Is it possible? Does MeshLab support in MATLAB? If so, how to import and export the data?
  2 个评论
stefano Chiappini
stefano Chiappini 2022-9-23
hI, i have the same problem. I want to export the output by mesh algorthim from Matlab to CloudCompare.
Did you solve the problem? if yes, can you show me the code?
Thank you so much.

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Evenor
Evenor 2017-12-27
Using stlwrite one can write MATLAB triangulations into a STL file.
Using stlread one can read an STL file into a MATLAB triangulation.
  1 个评论
DGM
DGM 2025-7-27
编辑：DGM 2025-7-27
Since R2018b, MATLAB has built-in STL tools. You don't need to download anything.
stlread
stlwrite
For legacy versions needing third-party tools, I'd strongly recommend these tools over #22409. This explains why.
If you use #22409 or #20922 in a modern installation, you will shadow the inbuilt tools and likely cause problems for yourself unless you rename them.

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