MATLAB R2017b Error: "Node coordinates should be 3-D, the matrix should have size 3-by-numnodes"

I follow the instructions given on this page: https://de.mathworks.com/help/pde/ug/2-d-geometry-from-polyshape.html

But I get the error: "Node coordinates should be 3-D, the matrix should have size 3-by-numnodes" in MATLAB R2017b trial version with only PDE toolbox.

On the other hand, when I try the same code on MATLAB R2018b version, I get no error!

Answer 1

[Alan Weiss]

I believe that geometryFromMesh was originally for 3-D meshes, and was extended to 2-D meshes in R2018a.

Alan Weiss

MATLAB mathematical toolbox documentation