Hierarchical Data Format (HDF) is a set of file formats (HDF4, HDF5) designed to store and organize large amounts of numerical data.

Hierarchical Data Format (HDF) is a set of file formats (HDF4, HDF5) designed to store and organize large amounts of numerical data.

It is used by NASA in the Earth Observing System (EOS) project, e.g. for MODIS and ASTER satellite data.

The latest version of NetCDF, version 4, is based on HDF5.

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