Hello everybody, i have the following problem. I want to load a msh-file for my mesh in FeniCS. msh = meshio.read("meshMSH3.msh") meshio.write("meshX.xml",msh) mesh = Mesh("meshX.xml") The error which occurs at meshio.write(“meshX.xml”,msh) is raise ReadError() meshio._exceptions.ReadError Unf…

According to example given here , for writing to the file you should use following: mesh.write("foo.vtk", # str, os.PathLike, or buffer/open file # file_format="vtk", # optional if first argument is a path; inferred from extension) or in your particular case msh.write("meshX.xml")

Hello bmf, thank you for your reply. Now i have the following error "DOLFIN XML only supports triangles and tetrahedra. " meshio._exceptions.WriteError: DOLFIN XML only supports triangles and tetrahedra. Consider using XDMF instead.

I overlooked this part about reading, sorry. Is this the whole error message? What kind of mesh is it, and which version of gmsh and meshio do you use? Maybe you could check this discussion , it could be useful.

Hello, the version of Gmsh ist 4.8.4. The mesh looks like the following: Point(1) = {2.25, 1.75, 0, 0.25}; Point(2) = {1.0, 3.0, 0, 0.25}; Point(3) = {-1.0, 1.0, 0, 0.25}; Point(4) = {4.0, -4.0, 0, 0.25}; Point(5) = {5.0, -3.0, 0, 0.25}; Point(6) = {2.0, 0.0, 0, 0.25}; Point(7) = {0.5, 0.0, 0, 0.…

[image] newbyJulia: meshio._exceptions.WriteError: DOLFIN XML only supports triangles and tetrahedra. Consider using XDMF instead. I suggest taking the error message literally. From the message it might be that your mesh contains quadrilaterial elements, which is not really supported in DOL…

Hello dparsons, thank you for your reply. Ok I tried to use xdmf by following this msh = meshio.read("meshMSH3.msh") pdb.set_trace() meshio.write("mesh.xdmf", meshio.Mesh(points=msh.points, cells={"tetra": msh.cells["tetra"]})) pdb.set_trace() meshio.write…

Also meshio-convert meshXMLX.xml meshXDMF.xdmf fails. I have installed meshio, but meshio-convert is not known.

[edit: meshio.write("mesh.xdmf") is failing. Dokken’s link may help with that] If you’re using a Debian or Ubuntu system, then meshio-convert is provided by the meshio-tools package. In future releases it will be Recommended by the python3-meshio package so might get installed automatically dependi…

Reading msh error

mesh

dokken July 23, 2021, 10:36am 10

@newbyJulia Have you had a look at: Accessing and marking imported boundaries - #8 by dokken

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Reading msh error

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