VCG Transform Grid
Transforms Grid to unstructured
Transform Grid converts a structured grid to an unstructured grid. The key difference to ParaView's Clean To Grid is that instead of generating VTK_VOXEL cell types, Transform Grid provides the cell type VTK_HEXAHEDRON. This is especially useful for people, using older plugin's that can not use grids with the VTK_VOXEL type.