Overview of the HDF Version 5 Format
The Hierarchical Data Format version 5 file format is designed for scientific data consisting of a hierarchy of datasets and attributes (or metadata). HDF is a product of the National Center for Supercomputing Applications (NCSA), which supplies the underlying C-language library; IDL provides access to this library via a set of procedures and functions contained in a dynamically loadable module (DLM).
This version of IDL supports HDF5 5-1.6.7. IDL's HDF5 routines all begin with the prefix "H5_" or "H5*_".
For more information on HDF5 see:
