Question on using geometryFromMesh

Question

Shengyue Shan 2019-11-20

0
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https://ww2.mathworks.cn/matlabcentral/answers/492167-question-on-using-geometryfrommesh

评论： Shengyue Shan 2019-11-21

Hi all,

I came across a problem when using geometryFromMesh. I have a mesh file for a 3D geometry generated from COMSOL, and I would like to use it in pde toolbox in MATLAB. The COMSOL file contains the coordinates for the nodes, which is a Nnodes-by-3 matrix and the element information which is a Nelements-by-4 matrix. I rearranged the node matrix and element matrix, and put them in the form in 3-by-Nodes form and 4-by-Nelements form as indicated in https://www.mathworks.com/help/pde/ug/pde.pdemodel.geometryfrommesh.html#buvjb86-nodes

However, there is still a warning saying that there is node ID missing and it should start from 1. However, if I add a row for node ID the matrix will not be 3-by-Nodes.

Is there anything that I missed that caused this problem?

Than you very much!

Best regards,

Shengyue