1. HDF and HDF-EOS Tools George Schwenke Raytheon STX

2. Development of tools useful for HDF-EOS has been slow...
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

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)

4. Tool - a complete application performing significant data manipulation and processing functions
examples:
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
HDF
Reference

5. Three categories of HDF-EOS Tools
ESDIS Project Tools
Other “Government” Tools
Commercial Tools

6. ESDIS Project Tools DIAL - Data and Information Access Link Capable of
searching
browsing
downloading
viewing
subsampling
subsetting
HDF and HDF-EOS Data

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

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

9. Government Tools (continued):
HDF-EOS DataBlade (developed by ECOlogic)
Extends capabilities
of Informix Data
Base to HDF-EOS
data

10. Commercial Tools
Noesys (Fortner Software LLC)
HDF Explorer (Mind)

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

12. Summary of response to the HDF-EOS Tools Survey
16 responses 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

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 forward-
looking software developers