Missing `read_vtk` method for `TreeMesh`?

[williamjsdavis]

Apologies if I'm missing something, but is there a reason why the TreeMesh class doesn't have a read_vtk method? TensorMesh has one (link), and SimplexMesh has one (link). TreeMesh also has a write_vtr method. Is this method not possible to implement for some reason, or is the method missing and can be implemented?

[jcapriot]

There is no type for a TreeMesh in VTK, it gets converted to an unstructured grid. It’s not impossible to import an unstructured grid, read it in, and verify that it could validly be interpreted as a TreeMesh, but it would likely take a while to develop this method and accurately test all of the corner cases.

[williamjsdavis]

Ah this makes sense, thank you! If I have some spare development time in the coming weeks I will try and take an attempt at implementing this feature