This document describes tools for working with HDF-EOS data formats: the HDF-EOS to GeoTIFF Conversion Tool (HEG) and an HDF-EOS plugin for the HDFView browser. HEG allows conversion between HDF-EOS and GeoTIFF formats and supports subsetting, reprojection, stitching and other functions. The HDFView plugin allows browsing and conversion between HDF-EOS2 and HDF-EOS5 formats within HDFView. Both tools are available for download and support a variety of Earth science datasets.

1. HDF-EOS to GeoTIFF
Conversion Tool
&
HDF-EOS Plug-in
for HDFView
Abe Taaheri, Raytheon IIS
HDF & HDF-EOS Workshop XV
Riverdale, MD
April 17, 2012
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3. HEG
Utility to convert EOSDIS data from
HDF-EOS2 to GeoTIFF formats.
• Versions Available:
– Stand-alone: A downloadable desktop version
– Data Pool: Access through NASA archive online
storage
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4. HEG Functionality
• Conversion:
– HDF-EOS (Swath or Grid ) to a single-band
or multi-band GeoTIFF’s
– HDF-EOS Swath to HDF-EOS Grid or Swath
– HDF-EOS Swath or Grid to generic Binary
(with metadata file)
• Subsetting (spatial, field, band)
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5. HEG Functionality
• Stitching (mosaicing) + subsetting + Reprojecting
• Reprojection ( to UTM, PS, TM, STP, LCC, LAMAZ,
GEO, SIN, Albers, CEA)
• Subsampling (Subsample stacks)
• Running from Command Line (batch jobs)
or with Java-based GUI
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6. HEG Functionality
• Metadata preservation/creation.
• Currently supports
MODIS, MISR, ASTER, AIRS, AMSR-E
products on TERRA and AQUA
– more than 210 products
• Operable on Sun, SGI, Win, Linux, MAC
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7. HEG Functionality
• Integrated into ECS Data Pool
– Reduces the transfer time of HDF-EOS data sets
(if subset is requested)
– Provides the end-user with the exact file required
by their application
• User Interface
– Portable, written in Java.
– Not dependent on COTS (eg. IDL).
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8. Examples (MISR)
Mt. Etna Eruption: MISR L1B Stitched Blocks
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9. Examples (MODIS)
2004 Hurricane Francis, MODIS
MOD021KM, Multi-Band GeoTIFF, 3 bands:
EV_1KM_RefSB, Bands 1,2,5
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10. Examples (ASTER)
AST_L1B, 2003 California Fires
Geo. projection, Multi-Band
GeoTIFF (3 bands):
Visible Near Infrared (VNIR)
….. and Subsetted
Two Swaths Stitched …..
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12. HDFView Plug-in
•
HDFView
A Java-based browser from The HDF Group for
HDF4 and HDF5 based data.
•
HDF-EOS plug-in
– Extends HDFView
to browse HDF-EOS data in both versions (2 & 5).
– Is a plug-in module
does not change HDFView functionality
– identical look and feel
when displaying HDF and HDF-EOS objects
– access to complete breakdown of HDF-EOS
objects. e.g. grid info, projection info, dims,
datafields, and attributes
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13. HDFView Plug-in
•
Some features in the Plug-in
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14. Swath, Grid, and Point Objects
Plug-in
file
treeview
Swath/Grid
Lat/Lon
display
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15. HE2 to HE5 Conversion
One click to convert HE2 to HE5 file format
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16. AMSR-E Swath
Getting Image of selected
pixels in a table
Getting lat/lon for a selected pixel
in a table
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17. AMSR-E and OMI Point objects
HE2
Point
Object
HE5
Point
Object
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18. MODIS (HE2) and OMI (HE5) Grids
Drawing
Coastlines
&
International
Borders
on
HE2 & HE5
Grids
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19. Availability
• Download, Documentation, Help:
HDFView:
http://newsroom.gsfc.nasa.gov/sdptoolkit/
HDFView/HDFView_hdfeos_plugin.html
HEG:
http://newsroom.gsfc.nasa.gov/sdptoolkit/
HEG/HEGHome.html
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20. Help, Comments
• Questions, Comments, Requests:
 Abe_Taaheri@raytheon.com
 Landover_PGSTLKIT@raytheon.com
 http://www.hdfeos.org/ : HDF-EOS Forum
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21. Thank You!
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