Partitioned Legacy VTK reader (pvtkfile)
Read files stored in VTK partitioned legacy format.
The Partitioned Legacy VTK reader loads files stored in VTK's partitioned legac file format (before VTK 4.2, although still supported). The expected file extension is .pvtk. The type of the dataset may be structured grid, uniform rectilinear grid (image/volume), non-uniform rectilinear grid, unstructured grid, or polygonal.