(HDF) A
library and multi-object file
format for the transfer of graphical and numerical data
between computeres. The freely available HDF distribution
consists of the library, command line utilities, test suite
source,
Java interface, and the Java-based HDF Viewer (JHV).
HDF supports several different data models, including
multidimensional arrays, raster images, and tables. Each
defines a specific aggregate data type and provides an
API
for reading, writing, and organising the data and
metadata.
New data models can be added by the HDF developers or users.
HDF is self-describing, allowing an application to interpret
the structure and contents of a file without any outside
information.
One HDF file can hold a mixture of related objects which can
be accessed as a group or as individual objects. Users can
create their own grouping structures called "vgroups".
HDF files can be shared across most common platforms,
including many workstations and high performance computers.
An HDF file created on one computer can be read on a different
system without modification.
http://hdf.ncsa.uiuc.edu/.