README FOR SUBSETTING CENTER SOFTWARE DOWNLOAD AREA

This directory contains downloadable software and documentation for software developed by the Subsetting Center. Each of the packages is contained in its own subdirectory, as follows:

hew
This directory contains the binary distribution of the HDF-EOS Web-based subsetter. This dataset-independent subsetter can subset many HDF-EOS swath and grid files.

hewbe
This directory contains the "simplified" HEW back end for HDF-EOS 2.x and 5.x files. For a description of the differences between hewbe and the HEW back-end, see the documentation.

hsa
This directory contains the binary distribution of the HDF-EOS Subsetting Appliance. This subsetter, an outgrowth of HEW, can be used in an ECS environment to provide on-the-fly subsetting capabilities via the EDG. Use of EDG and ECS is required, so this software is not appropriate for all systems. A PASSWORD IS REQUIRED TO DOWNLOAD THIS SOFTWARE. Send e-mail to subset@itsc.uah.edu with your request.

hse
This directory contains the binary distribution of the HEW Subsetting Engine, which is the "guts" of the HEW subsetter packaged as a stand-alone function. The function can be linked with a user-supplied wrapper program to provide HDF-EOS subsetting capabilities. Versions are available for HDF-EOS 2 (hse) and HDF-EOS 5 (hse5).

odl
This directory contains the modified source code for the ODL library. The modifications remove a major bug which fills memory with newlines if overlong file names are encountered.

sdptk
This directory contains some SDP toolkit routines that have been extracted from the entire toolkit and made to function independently of the toolkit. In particular, you will find the TAI time conversion routines in this directory. Versions are available for HDF-EOS 2 (sdptk) and HDF-EOS 5 (sdptk5).

slash
This directory contains the simple command-line interface to HEW software distribution. See the ICD document for a description of slash's capabilities and calling sequence.

spot
This directory contains the binary distribution for the UAH subsettability checker (SPOT). See the README in that directory for further information.

eosdiff
This directory contains the HDF-EOS "differences" tool which can be used to logically compare two similar HDF-EOS V2 files.

sfc
This directory contains the Java code to support the subsetter / formatter converter.

See the COPYRIGHT notice for important information.

NOTICE

The subsetting software and supporting packages are currently available in binary form for SGI/Irix, Sun/SunOS, and Linux platforms. However, our SGI development platform is aging, obsolete, and no longer under maintenance. We will continue to support the SGI/Irix port as long as the SGI platform remains usable, but when it finally dies, that support will be dropped without notice. If you have a serious need for the SGI version -- and money -- please contact Dr. Sara Graves (256-824-6064) or Helen Conover (256-961-7807) and we'll talk.

DEPENDENCY MATRIX

These packages require the indicated additional software:

Package    Also requires
ODL(Nothing)
SDPTKHDF 4
SDPTK5HDF 5
HSESDPTK, HDF-EOS 2, HDF 4, ODL
HSE5SDPTK5, HDF-EOS 5, HDF 5, ODL

HEW, HEWBE, HSA, and SPOT are self-contained executables and do not require additional software; however, the shared libraries for HDF, HDF-EOS, and C run-time are required on SGI platforms.