(optional; not in UGRID standard) A DataArray of indices storing the indices of the parent face from grid A, available when this Grid is a supermesh. `Grid.Mesh2_overlapfaces_a: int` DataArray of size (`nMesh2_face`)
(optional; not in UGRID standard)
A DataArray of indices storing the indices of the parent face from grid A, available when this Grid is a supermesh.
Grid.Mesh2_overlapfaces_a: intDataArray of size (nMesh2_face)