Convert an xdmf file to xml

General
1

I need to convert my xdmf file to an xml file so that I can call Mesh() on the xml file. How do I convert from xdmf to xml? I started with a .geo file in gmsh that I created an msh file from. I then converted the msh file to xdmf using meshio convert.

2

Meshio can convert files from xdmf to xml. Why do you specifically need to have mesh=Mesh("file.xml" and not use the syntax described here, which is recommended: Transitioning from mesh.xml to mesh.xdmf, from dolfin-convert to meshio - #3 by dokken

3

Ok. I tried both options.

First option
I ran the following lines:

os.system('meshio convert \\wsl.localhost\\Ubuntu\\usr\\share\\input2D.xdmf \\wsl.localhost\\Ubuntu\\usr\\share\\input2D.xml')
mesh = Mesh("\\wsl.localhost\\Ubuntu\\usr\\share\\input2D.xml")

This gives me an error saying that Mesh() was unable to read input2D.xml

Second Option
I run:

msh = meshio.read("input2D.msh")

    meshio.write("mesh.xdmf", meshio.Mesh(points=msh.points, cells={"tetra": msh.cells["tetra"]}))
    meshio.write("mf.xdmf", meshio.Mesh(points=msh.points, cells={"triangle": msh.cells["triangle"]},
                                    cell_data={"triangle": {"name_to_read": msh.cell_data["triangle"]["gmsh:physical"]}}))

    mesh = Mesh()
    with XDMFFile("mesh.xdmf") as infile:
        infile.read(mesh)
    mvc = MeshValueCollection("size_t", mesh, 2) 
    with XDMFFile("mf.xdmf") as infile:
        infile.read(mvc, "name_to_read")
    mf = cpp.mesh.MeshFunctionSizet(mesh, mvc)

This gives me this error:

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