HDF4 (also known as HDF) is a library and multi-object file format for
storing and managing data between machines. There are two versions of
HDF technologies that are completely different: HDF4 and HDF5. HDF4 is
the first HDF format.
At its lowest level, HDF4 is a physical file format for storing scientific
data. At its highest level, HDF4 is a collection of utilities and
applications for manipulating, viewing, and analyzing data in HDF4 files.
Between these levels, HDF4 is a software library that provides high-level
APIs and a low-level data interface.
This is the legacy version HDF4. Although it is still maintained, new
users that are not constrained to using HDF4, should use HDF5 instead.
This package contains utility functions for working with HDF4 files.