hdf5-hyperslab · shipping · also Hyperslab selection

HDF5 hyperslab

An HDF5 hyperslab is a selection of elements in a multidimensional dataspace expressed through rectangular blocks and their positions.

Related Observatory article: HDF5 hyperslab on hesela.com

Selection geometry: a regular hyperslab uses a starting offset, stride, block count and block size for each dimension; selection operations can combine regions. [1]

Storage distinction: a hyperslab identifies logical elements, not disk allocation or a chunk layout. Selecting a small region can still require reading and decompressing complete intersecting chunks. [2]

Virtual datasets: source and destination selections determine which values appear at which logical coordinates. Filenames alone do not describe the mapping. [3]

Relations

related

hdf5, hdf5-virtual-dataset, hdf5-chunked-layout

Citations

1. The HDF Group: H5Sselect_hyperslab and dataspace selections (accessed 2026-10-18)
2. h5py 3.15.0: slicing and chunked storage (accessed 2026-10-18)
3. The HDF Group: H5Pset_virtual mappings (accessed 2026-10-18)

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