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Support writing of hex elements to VTKHDF format. (#3623)

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Co-authored-by: Paul Romano <paul.k.romano@gmail.com>
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Patrick Shriwise 2026-05-20 14:01:21 -05:00 • committed by GitHub
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10
docs/source/usersguide/processing.rst
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@ -97,7 +97,15 @@ VTK Mesh File Generation
------------------------
VTK files of OpenMC meshes can be created using the
:meth:`openmc.Mesh.write_data_to_vtk` method. Data can be applied to the
:meth:`openmc.Mesh.write_data_to_vtk` method. This method supports several VTK
formats depending on the mesh type. Structured meshes
(:class:`~openmc.RegularMesh`, :class:`~openmc.RectilinearMesh`,
:class:`~openmc.CylindricalMesh`, and :class:`~openmc.SphericalMesh`) can be
exported to legacy VTK format (``.vtk``). The :class:`~openmc.UnstructuredMesh`
class supports VTK unstructured grid formats (``.vtu``) as well as an HDF5-based
format (``.vtkhdf``) that does not require the ``vtk`` module to write.
Data can be applied to the
elements of the resulting mesh from mesh filter objects. This data can be
provided either as a flat array or, in the case of structured meshes
(:class:`~openmc.RegularMesh`, :class:`~openmc.RectilinearMesh`,