HDF-EOS is a software library designed to support NASA Earth Observing System (EOS) science data, built on top of HDF (Hierarchical Data Format) developed by The HDF Group. Current status of HDF-EOS and access tools will be summarized and updates on TOOLKIT, HDFView plug-in and the HDF-EOS to GeoTIFF (HEG) conversion tool, including recent changes to the software, ongoing maintenance, upcoming releases, and issues will be discussed.
- 1. Status of HDF-EOS,Related Software, and Tools Abe Taaheri,
Raytheon IIS HDF & HDF-EOS Workshp XIII Riverdale, MD November
4, 2009 Page 1
2. TOOLKIT / HDF-EOS Support Maintenance support is funded on
EMD to EED Bridge (EEB) contract through Dec 2010Support will
continue with EOSDIS Evolution & Development (EED) award in
2010Current support (One full-time developer) : HDF-EOS2 & 5
SDP/MTD Toolkit HDF-EOS plug-in for HDFView HDF-EOS2 to GeoTIFF
Converter (HEG) Other Toolkit/HDF-EOS related software
Toolkit/HDF-EOS/HEG helpdesk Related web sites maintenancePage 2 3.
ECS Support of HDF-EOS Both HDF4 and HDF5 based flavors of HDF-EOS
are part of ECS baseline. OSs: Solaris (9, 10), Linux ( 32 and
64-bit ), Mac OS X (Power PC and Mac Intel), Windows XP (MTD
Toolkit, HDF-EOS2 & 5, HEG, HDFView) Added full Cygwin support
in July 2009 release Compilers: Fortran 77/90 & g77/pgf90 , C,
C++, gcc, g++, gfortran (Mac Intel)Page 3 4. Downloadable Software
SDP/MTD Toolkit (Science Data Processing Tools) HDF-EOS2 (HDF4
based) HDF-EOS5 (HDF5 based) heconvert (converts HDF4 - based
Grid/Point/Swath structures to HDF-EOS 5 equivalents) Page 4 5.
Downloadable Applications HEG - GeoTIFF conversion - Spatial
subsetting, Field Subsetting - reprojection - stitching,
sub-sampling and more . HDFView Plug-in, Java-based browser Plug-in
(HDF4, HDF5, HDF-EOS 2 and 5 access) HE5View* (HDF5 - based
browser) HE5View EOSView* (HDF4 - based browser) EOSView * Dropped
support for OS updates on July 2006 Page 5 6. Software/Tools in
detail What are: TOOLKIT, HDF-EOS ?Page 6 7. Toolkit Science Data
Production (SDP) Toolkit : collection of tools used by - Science
software developers who produce code to process instrument data. -
HDF-EOS users who need to Access metadata in HDF-EOS files Perform
Time/Date conversion Access Digital Elevation Model Data Access
Ancillary Data, such as Digital Chart of the World database (DCW),
Olson World Ecosystem files, DEM data files, etc. Page 7 8. Toolkit
(cont.) Tools provided in SDP Toolkit: -AA CBP CSC CUC DEM EPH GCT
IO MEM MET PC SMF TD(Ancillary Data Access) (CELESTIAL Body
Position) (Coordinate System Conversion) (Constant and Unit
Conversions) (Digital Elevation Model Access) (Ephemeris Data
Access) (Geo Coordinate Transformation) (Input Output (File I/O))
(Memory Management) (Metadata Access) (Process Control) (Status
Message File (Error/Status)) (Time and Date Conversion) Page 8 9.
Toolkit (cont.)Tools provided in MTD Toolkit: - MET - TD(Metadata
Access) (Time and Date Conversion)Page 9 10. HDF-EOS HDF-EOS is an
extension to HDF whichstandardizes storage of and access to common
Earth Sciences data structures By providing a single interface to
data structures common to earth science By providing a container
for EOS inventory, archive and product specific metadata By
establishing a consistent relationship between geolocation and
science data.Page 10 11. HDF-EOS 2 HDF4 - based, storage format for
EOS standard products. Used operationally by MODIS, MISR, ASTER,
Landsat, AIRS and other EOS instruments Support for
Grid/Point/Swath structuresPage 11 12. HDF-EOS 5 Based on HDF5, a
complete rewrite of HDF-EOS2 with a different user interface. Used
operationally by EOS Aura instruments Designed to resemble HDF-EOS
2 to the maximum extent possible. Supports same data structures
(and more) Added prefix HE5_ to HDF-EOS 2 functionsPage 12 13.
Software Releases Toolkit/HDF-EOS: Last release July 2009 TOOLKIT
5.2.16 HDF-EOS 2.16, HDF- EOS5.1.12 with HDF4.2r4, HDF5-1.8.3,
Szip2.1 Next release June 2010 TOOLKIT 5.2.17 HDF-EOS 2.17,
HDF-EOS5.1.13 with new releases of HDF4, 5 (5-1.8.X) Page 13 14.
Software Releases (Cont.) HEG (HDF-EOS2 to GeoTIFF Converter): Last
release August 2008 Version 2.9 Next release November 2009 Version
2.10Page 14 15. Software Releases (Cont.) HDF-EOS Plug-in for
HDFView: Last release September 2008 Version 2.4 Next release For
HDFView Version 2.5, December 2009Page 15 16. Software Releases
(Cont.) HECONVERT (HDF-EOS2 to HDF-EOS5 Converter): Early releases
2001, 2004 Version ? Last release Dec. 2008 Version 2.0 Next
release Not Planned Page 16 17. Major Development/Fixes Last
Release (July 2009)TOOLKIT: XML metadata writing capabilty for
inventory metadata in SDP toolkit (MLS) ODL fix (WriteLable) for
potential core dump while writing long input pointer metadata
attributes (AIRS) Support TOOLKIT for CYGWIN pccheck utility fix
for problems resulting with empty space at a line beginning in PCF
file Page 17 18. Major Development/Fixes (cont.) HDF-EOS5: Support
for reading HDF-EOS5 files with netCDF Correcting wrong tiling and
compression infoin the structure metadata Use of unlimited
dimension in HDF-EOS5 (Users Guide clarification) Correction of
output attribute data types in attribute inquiry routine Fix for
writing int8 data correctly to output hdf5 file with C calls. There
was no such a problem with Fortran calls Page 18 19. Major
Development/Fixes (cont.) HDF-EOS2: Fixed PTdeftimeperiod to return
an error when stop time < start time Fix for correct internal
compression method detection for the products that are compressed
internally after the production, possibly using hrepack (structure
metadata has no record of compression info) Numerous fixes for
HEConvert (version 2.0 release) Page 19 20. Availability Access to
libraries, applications, Documentation : TOOLKIT:
http://newsroom.gsfc.nasa.gov/sdptoolkit/toolkit.htmlHDFView:
http://newsroom.gsfc.nasa.gov/sdptoolkit/HDFView/
HDFView_hdfeos_plugin.htmlHEG:
http://newsroom.gsfc.nasa.gov/sdptoolkit/HEG/HEGHome.html Page 20
21. Availability Questions, Comments, Requests:
[email protected] [email protected]
http://www.hdfeos.org/ : HDF-EOS ForumPage 21 22. Thank You!Page
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