Tools and Examples that Improve the Interoperability of NASA HDF-EOS Data MuQun Yang, Hyo-Kyung Lee, and Mike Folk The HDF Group The HDF Group has developed and maintained the following tools for the interoperability of NASA HDF and HDF-EOS data. Some tools are still under active development. Use netCDF tools to access HDF-EOS via OPeNDAP Use NetCDF-4 to access HDF- EOS5 Use HDF4 XML Map Writer to access HDF4 using generic file readers http://hdfeos.org This work was supported by cooperative agreement number NNX08AO77A from the National Aeronautics and Space Administration (NASA). Any opinions, findings, conclusions, or recommendations expressed in this material are those of the author[s] and do not necessarily reflect the views of the National Aeronautics and Space Administration. HDF4/5 Files Users OPeNDAP Clients OPeNDAP Servers libnc-dap HDF4/5 Handlers Terra/Aqua/Aura Translation Layers netCDF Visualization Tools DAP HDF5 HDF-EOS5 HDF-EOS5 file HDF5 NetCDF4 NetCDF-4 file Augmented HDF-EOS5 file Augmentation Use HDF-EOS2 Dumper to help the access of HDF-EOS2 using IDL and MATLAB HDF4 File HDF4 Mapping File (XML document) hmap linked with HDF4 library Reader program Object Data Groups, Data Objects, Structural and Application Metadata; Locations of Object Data HDF-EOS2 File HDF-EOS2 Dumper Extract geo-location information Latitude Longitude in ASCII file HDF SDS Interface Text file Interface MATLAB IDL Example Usage: %eos2dump –a1m MYD02HKM.A2010031.0035.005.2010031183706.hdf Example Latitude Output: -61.0802, -61.0949, - 61.1096, -61.1241, -61.1387, - 61.1531, -61.1675, -61.1818,- 61.196, … Use cases: HDF-EOS2 files with non- geographic projections, like SINSOID and SOM, and swath dimension maps.
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Tools and Examples that Improve the Interoperability of NASA HDF-EOS Data
Tools and Examples that Improve the Interoperability of NASA HDF-EOS Data. HDF4 Mapping File (XML document). hmap linked with HDF4 library. http://hdfeos.org. Text file Interface. Object Data. NetCDF-4 file. MuQun Yang, Hyo -Kyung Lee, and Mike Folk The HDF Group - PowerPoint PPT Presentation
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Tools and Examples that Improve the Interoperability of NASA HDF-EOS Data
MuQun Yang, Hyo-Kyung Lee, and Mike FolkThe HDF Group
The HDF Group has developed and maintained the following tools for the interoperability of NASA HDF and HDF-EOS data. Some tools are still under active development.
Use netCDF tools to access HDF-EOS via OPeNDAP
Use NetCDF-4 to access HDF-EOS5
Use HDF4 XML Map Writer to access HDF4 using generic file readers
http://hdfeos.org
This work was supported by cooperative agreement number NNX08AO77A from the National Aeronautics and Space Administration (NASA). Any opinions, findings, conclusions, or recommendations expressed in this material are those of the author[s] and do not necessarily reflect the views of the National Aeronautics and Space Administration.
HDF4/5 Files
Users
OPeNDAP Clients
OPeNDAP Servers
libnc-dap HDF4/5 Handlers
Terra/Aqua/Aura
Translation Layers
netCDF Visualization Tools
DAP
HDF5
HDF-EOS5
HDF-EOS5file HDF5
NetCDF4
NetCDF-4file
AugmentedHDF-EOS5
file
Augmentation
Use HDF-EOS2 Dumper to help the access of HDF-EOS2 using IDL and MATLAB
HDF4 File HDF4 Mapping File (XML document)
hmaplinked with HDF4 library
Readerprogram
Object Data Groups, Data Objects, Structural and Application
Metadata; Locations of Object Data
HDF-EOS2 File
HDF-EOS2 DumperExtract geo-location
information
LatitudeLongitude in ASCII file
HDF SDS Interface Text file InterfaceMATLABIDL
Example Usage: %eos2dump –a1m MYD02HKM.A2010031.0035.005.2010031183706.hdf
Example Latitude Output:-61.0802, -61.0949, -61.1096, -61.1241, -61.1387, -61.1531, -61.1675, -61.1818,-61.196, …
Use cases: HDF-EOS2 files with non-geographic projections, like SINSOID and SOM, and swath dimension maps.
MATLAB and IDL examples that use the HDF-EOS2 Dumper outputs
OPeNDAP Examples
HDF4 XML Map Writer Example
http://hdfeos.org
Acknowledgements: We thank Dan Marinelli, Carol Boquist and Rama Ramapriyan of the NASA ESDIS project; Christopher Lynnes, James Johnson and Fan Fang from NASA GES DISC; Ruth Duerr from NSIDC; James Gallagher from OPeNDAP, Inc.; Cheryl Craig from HIRDLS team; UCAR's NCL User Group and John Evans from MathWorks for their valuable suggestions and help.
NSIDC AMSR_E IDV NSIDC AMSR_E Panoply LaRC MISR Panoply