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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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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