VTKHDF: Implementation Status#

This document specifies the features currently supported by the VTK implementation of the VTKHDF file format, vtkHDFReader and vtkHDFWriter. The following list only showcases complete and planned developments.

File Format Specifications Status#

Data Types#

The following list shows the VTK data types currently specified, at least partially. Any data type not listed here is also not yet specified, the one that are listed has not specified have ongoing discussions and may be specified when possible.

VTK Data Type	Status
vtkCellGrid	not specified
vtkHyperTreeGrid	specified
vtkImageData	specified
vtkMultiBlockDataSet	specified
vtkPartitionedDataSet	specified
vtkPartitionedDataSetCollection	specified
vtkOverlappingAMR	partial 1 2
vtkPolyData	specified
vtkRectilinearGrid	not specified
vtkStructuredGrid	not specified
vtkUnstructuredGrid	specified

Additional Features#

Here is the list of supported feature which doesn’t depends on a VTK data type:

Features	Status
Static¹	supported
Temporal	supported

Implementation Status in VTK#

Data Types#

VTK Data Type	vtkHDFReader	vtkHDFWriter
vtkHyperTreeGrid	supported	not supported
vtkImageData	supported	not supported
vtkMultiBlockDataSet	supported	supported
vtkPartitionedDataSet	supported	supported
vtkPartitionedDataSetCollection	supported	supported
vtkOverlappingAMR	supported	not supported
vtkPolyData	supported	supported
vtkUnstructuredGrid	supported	supported

Additional Features#

Features	vtkHDFReader	vtkHDFWriter
Compression	supported	supported
Static¹	partially supported²	not supported
Temporal	supported	supported

¹: ability to reuse data instead of duplicating it to save disk space and performance. ²: missing for vtkHyperTreeGrid.