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Re: h5 data and GPS [message #81526]

Thu, 27 September 2012 07:53

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

dave poreh writes:

> I have a *.h5 image, and i want to find a region around a
> GPS point (I want to find the pixel values around the GPS station).
> I tried HDfviwer, NEST, ENVI, but i could find good result.
> Does here anyone could help please?

Create a vector the size of your image (do this for both X and Y),
and scale the vector into the [XY]Range of your image in
projected meter space. (You can use Scale_Vector for this.)
Then, locate your GSP point (in projected meter space) in
these vectors with Value_Locate. Now you can grab as many
pixels as you need with image subscripts.

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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