| Re: Area-and-time-weighted regridding of satellite data query [message #80907] |
Tue, 24 July 2012 06:36 |
David Fanning
Messages: 11724
Registered: August 2001
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Senior Member |
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Jasdeep Anand writes:
> I have several months worth of satellite data that I would like to bin
> to a more regular grid, creating a time-averaged dataset (e.g a
> monthly, rather than daily dataset)
This kind of gridding is something that IDL has always
done poorly, in my opinion. And it is something that
is so needed with satellite data that it is hard to
believe it is missing in IDL.
I've always used the Mapx coordinate transformation
package from the National Snow and Ice Data Center
(NSIDC):
http://geospatialmethods.org/mapx
It has a number of robust gridding parameters that can
be used to grid satellite data into a map projection.
Alas, it is only available for UNIX machines and can
be quite difficult to install. Fortunately, the folks
at NSIDC are always happy to help.
Cheers,
David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.idlcoyote.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")
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| Re: Area-and-time-weighted regridding of satellite data query [message #80909 is a reply to message #80907] |
Tue, 24 July 2012 05:31  |
Klemen
Messages: 80
Registered: July 2009
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Member |
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How about if you interpolated everything using nearest neighbors to a finer grid than your resulting grid would be?
For example you can interpolate everything to 1 km grid assuming you want to have results in 10 km grid. You will then have grid partial coverage of your original data gridded to 1 km. Then you can proceede...
Cheers, Klemen
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