# vtk DataFile Version 1.0 One VTK_VERTEX (for center) and one VTK_HEXAHEDRON (for corners). Contour fails (no cells or points, so no isosurface). ASCII DATASET UNSTRUCTURED_GRID POINTS 9 float -1.000000 -1.000000 -1.000000 -1.500000 -1.500000 -1.500000 -0.500000 -1.500000 -1.500000 -0.500000 -0.500000 -1.500000 -1.500000 -0.500000 -1.500000 -1.500000 -1.500000 -0.500000 -0.500000 -1.500000 -0.500000 -0.500000 -0.500000 -0.500000 -1.500000 -0.500000 -0.500000 CELLS 2 11 1 0 8 1 2 3 4 5 6 7 8 CELL_TYPES 2 1 2 POINT_DATA 9 SCALARS sphere_marker float LOOKUP_TABLE default 0.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0 2.0