reader.SetFileName('my_input_data.vtk')
reader.Update()
my_vtk_array = reader.GetOutput().GetPointData().GetArray('my_scalar_name')
nodes_nummpy_array = vtk_to_numpy(nodes_vtk_array)
my_numpy_array = vtk_to_numpy(my_vtk_array)
x, y, z = nodes_nummpy_array[:, (0)],
How can I read a VTK file into a Python datastructure?