Thanks,
I have used lat/lon for satellite images where the data is not on a
regular grid.
I was trying to save file size by not dumping out all the lat/lon float
values.
I'll look at the examples.
Garrett Campbell
On 5/12/2013 9:51 PM, Kent Yang wrote:
If you can use HDF-EOS, you can check
http://newsroom.gsfc.nasa.gov/sdptoolkit/userguide.html
HDF-EOS Library User's Guide Volume 1: Overview and Examples
<http://newsroom.gsfc.nasa.gov/sdptoolkit/docs/HDF-EOS_UG.pdf> for
HDF-EOS2
HDF-EOS Interface Based on HDF5, Volume 1: Overview and Examples
<http://newsroom.gsfc.nasa.gov/sdptoolkit/docs/HDF-EOS5_UG.pdf> for
HDF-EOS5
HDF-EOS can assure the geographic projection is specified without
providing lat/lon values.
If you prefer to use HDF5 or netCDF-4, you definitely need to provide
latitude and longitude values,
An attribute called units="degrees_east" for longitude and
units="degrees_north" for latitude should be specified to assure the
CF compliant.
check http://www.hdfgroup.org/HDF5/faq/cfattributes.html
You may find HDF5, netCDF4 and HDF-EOS5 examples that may be similar
to what you want to achieve.
Some HDF5 examples can also be found under
http://www.hdfgroup.org/ftp/HDF5/examples/
Kent
On Sun, May 12, 2013 at 11:30 PM, Garrett Campbell
<[email protected] <mailto:[email protected]>> wrote:
I have data in a simple projection: cylindrical equidistant.
I would like to write something into the hdf file to specify the
projection.
Any idea what to specify?
Any examples?
Thanks
--
G. Garrett Campbell
NSIDC
303 492 5194 <tel:303%20492%205194>
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--
Kent Yang The HDF Group
1800 So. Oak St., Suite 203, Champaign, IL 61820
217.531.6107
http://hdfgroup.org http://hdfeos.org
_______________________________________________
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--
G. Garrett Campbell
NSIDC
303 492 5194
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