HDF and HDF-EOS Tools
George Schwenke
Raytheon STX
schwenke@rattler.gsfc.nasa.gov

HDF-EOS Workshop II
Many tools currently exist for visualization and
manipulation of HDF files
Development of tools useful for HDF-EOS has
bee...
A Necessary Distinction:
Utility - typically runs from the
command line and performs a specific
data manipulation function...
Tool - a complete application performing
significant data manipulation and processing
functions
examples:

HDF

The NCSA J...
Three categories of HDF-EOS Tools
ESDIS Project Tools
Other “Government” Tools
Commercial Tools

HDF-EOS Workshop II
ESDIS Project Tools
DIAL - Data and Information Access Link
Capable of
• searching
• browsing
• downloading
• viewing
• su...
ESDIS Project Tools
EOSView (new version 3.0 released Aug 98)
Demonstrated during 1st day of Workshop
Many data searching,...
“Government” Tools
View_hdf (from LaRC)
HDF only; uses IDL
WebWinds from JPL

plus a wealth of work for HDF
from NCSA, inc...
Government Tools (continued):
HDF-EOS DataBlade (developed
by ECOlogic)
Extends capabilities
of Informix Data
Base to HDF-...
Commercial Tools
Noesys (Fortner Software LLC)

HDF Explorer (Mind)

HDF-EOS Workshop II
Commercial Tools
ENVI/IDL - Environment for
Visualizing Images (RSI)
IDL 5.2 has full support for HDF-EOS;
ENVI will follo...
Summary of response to the HDF-EOS Tools Survey
16 responses -- 5 gov; 4 edu; 7 com
All but 1 are “developing HDF-EOS tool...
Summary
Most utilities and tools currently exist for only HDF
Development of HDF-EOS capable tools has been
slow!
ESDIS Pr...
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HDF and HDF-EOS Tools (1998)

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HDF and HDF-EOS Tools (1998)

  1. 1. HDF and HDF-EOS Tools George Schwenke Raytheon STX schwenke@rattler.gsfc.nasa.gov HDF-EOS Workshop II
  2. 2. Many tools currently exist for visualization and manipulation of HDF files Development of tools useful for HDF-EOS has been slow... The limited availability of actual HDF-EOS data has been one significant factor delaying tools development... HDF-EOS Data S Sampler 1 HDF-EOS Workshop II
  3. 3. A Necessary Distinction: Utility - typically runs from the command line and performs a specific data manipulation function examples: make24 ristosds Convert Raster Image Sets to Scientific Data Sets hdfls List contents of an HDF file (tags and reference numbers) HDF-EOS Workshop II
  4. 4. Tool - a complete application performing significant data manipulation and processing functions examples: HDF The NCSA Java-based HDF Viewer (JHV) - A Java-based implementation of an HDF Viewer. DIAL (Data Information and Access Link) from ESDIS - browsing, plotting, subsampling and subsetting of HDF and HDF-EOS data. HDF Browser from Fortner Software - allows access to data stored in HDF formatted files Reference http://hdf.ncsa.uiuc.edu/tools.html HDF-EOS Workshop II
  5. 5. Three categories of HDF-EOS Tools ESDIS Project Tools Other “Government” Tools Commercial Tools HDF-EOS Workshop II
  6. 6. ESDIS Project Tools DIAL - Data and Information Access Link Capable of • searching • browsing • downloading • viewing • subsampling • subsetting HDF and HDF-EOS Data HDF-EOS Workshop II
  7. 7. ESDIS Project Tools EOSView (new version 3.0 released Aug 98) Demonstrated during 1st day of Workshop Many data searching, manipulation and display functions (like DIAL), doesn’t have the capability to act as a data server HDF-EOS Workshop II
  8. 8. “Government” Tools View_hdf (from LaRC) HDF only; uses IDL WebWinds from JPL plus a wealth of work for HDF from NCSA, including JHV HDF-EOS Workshop II
  9. 9. Government Tools (continued): HDF-EOS DataBlade (developed by ECOlogic) Extends capabilities of Informix Data Base to HDF-EOS data HDF-EOS Workshop II
  10. 10. Commercial Tools Noesys (Fortner Software LLC) HDF Explorer (Mind) HDF-EOS Workshop II
  11. 11. Commercial Tools ENVI/IDL - Environment for Visualizing Images (RSI) IDL 5.2 has full support for HDF-EOS; ENVI will follow MATLAB Version 5.3 supports HDF-EOS HDF-EOS Workshop II
  12. 12. Summary of response to the HDF-EOS Tools Survey 16 responses -- 5 gov; 4 edu; 7 com All but 1 are “developing HDF-EOS tools” Most “don’t know” when they’ll be ready... Tools to be developed… • Java JNI Interface • display tools • Java compatable ODBMS • ASCII to HDF-EOS • METADATA tools for granule level support • map/graphical overlay tools • browser/editor for sgi, linux • access and analysis HDF-EOS Workshop II
  13. 13. Summary Most utilities and tools currently exist for only HDF Development of HDF-EOS capable tools has been slow! ESDIS Project sponsorship helps, but can not be the only player The future volumes of data in HDF-EOS format will justify expense of HDF-EOS software for forwardlooking software developers HDF-EOS Workshop II

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