dolfinx.io.vtkhdf

Support for VTKHDF5 file format.

Functions

read_mesh(comm, filename, dtype, gdim, ...)	Read a mesh from a VTKHDF format file.
write_cell_data(filename, mesh, data, time)	Write data at cells of the mesh.
write_mesh(filename, mesh)	Write a mesh to file in VTKHDF format.
write_point_data(filename, mesh, data, time)	Write data at vertices of the mesh.

dolfinx.io.vtkhdf.read_mesh(comm: Comm, filename: str | Path, dtype: DTypeLike = <class 'numpy.float64'>, gdim: int = 3, max_facet_to_cell_links: int = 2)

Read a mesh from a VTKHDF format file.

Note

Changing max_facet_to_cell_links from the default value should only be required when working on branching manifolds. Changing this value on non-branching meshes will only result in a slower mesh partitioning and creation.

Parameters:

• comm – An MPI communicator.

• filename – File to read from.

• dtype – Scalar type of mesh geometry (need not match dtype in file).

• gdim – Geometric dimension of the mesh.

• max_facet_to_cell_links – Maximum number of cells that can be linked to a facet.

dolfinx.io.vtkhdf.write_cell_data(filename: str | Path, mesh: Mesh, data: ndarray[tuple[Any, ...], dtype[_ScalarT]], time: float)

Write data at cells of the mesh.

Parameters:

• filename – File to write to.

• mesh – Mesh.

• data – Data at the cells of the mesh, local to each process.

• time – Timestamp.

dolfinx.io.vtkhdf.write_mesh(filename: str | Path, mesh: Mesh)

Write a mesh to file in VTKHDF format.

Parameters:

• filename – File to write to.

• mesh – Mesh.

dolfinx.io.vtkhdf.write_point_data(filename: str | Path, mesh: Mesh, data: ndarray[tuple[Any, ...], dtype[_ScalarT]], time: float)

Write data at vertices of the mesh.

Parameters:

• filename – File to write to.

• mesh – Mesh.

• data – Data at the points of the mesh, local to each process.

• time – Timestamp.