How do I create a 2D mesh of triangular elements?

2021 11 22
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更新时间：2021 11 23
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What is the best way to create a 2D mesh of triangular elements given connectivity (T), and x, y coordinates? trimesh function perhaps?

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Matt J
Matt J 2021-11-22

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Yes. Or triplot().

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math5217
math5217 2021-11-22
Great, but do you know how T relates to x,y coordinates? Given a connectivity matrix T, x column vector, and y column vector. (e.g. How many rows of T per x and y for each triangular element?)
Matt J
Matt J 2021-11-22
编辑：Matt J 2021-11-22
For example,
T(j,:)=[2 5 7]
means that the j-th triangle in the mesh will be made up of the vertices (x(2),y(2)) , (x(5),y(5)) , and (x(7),y(7)).
math5217
math5217 2021-11-23
That makes sense. What about meshgrid function? That needs to be used for trimesh.
math5217
math5217 2021-11-23
Got a mesh plot. Thanks for the help.
Matt J
Matt J 2021-11-23
You are quite welcome, but please Accept-click the answer to indicate that your problem has been resolved.

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