hdf images hdf images

This web site is no longer maintained (but will remain online).
Please see The HDF Group's new Support Portal for the latest information.

HDF Scientific Data Sets

HDF has two interfaces, the SD and the DFSD, that support the scientific data model. In general, the newer, multi-file SD interface should be used instead of the DFSD interface.

Scientific Data Sets (SDSs) are used for storing n-Dimensional gridded data. The actual data in the dataset can be of any of the "standard" number types: 8, 16, and 32-bit signed and unsigned integers, and 32 and 64-bit floating point values. In addition, the SD interface allows SD data sets with variable bit lengths (1 to 32-bits) to be created.

Meta-data such as dimension scales and attributes can be stored with an SDS. With the SD interface, user-defined as well as pre-defined attributes are available. Only pre-defined attributes are available with the DFSD interface. - - Last modified: 24 January 2017