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Re: Check overlapping of two differen georeferenced images [message #83075 is a reply to message #83074]

Mon, 04 February 2013 07:24

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

titan writes:

> Is there a way using IDL or ENVI to check if two georeferenced images are overlapping or not?
>
> In this way I would like to find a workaround for the envi_layer_stacking_doit routine error that I get when two images have no geographic area in common.

This is simply a math problem to determine if two polygons (rectangles
in our case) overlap:

http://rbrundritt.wordpress.com/2008/10/20/determine-if-two- polygons-
overlap/

It should be simple enough to write the routine in IDL.

Cheers,

David

--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.idlcoyote.com/
Sepore ma de ni thue. ("Perhaps thou speakest truth.")

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[Message index]

		Re: Check overlapping of two differen georeferenced images By: Brian Daniel on Tue, 05 February 2013 07:13
		Re: Check overlapping of two differen georeferenced images By: titan on Tue, 05 February 2013 00:01
		Re: Check overlapping of two differen georeferenced images By: titan on Mon, 04 February 2013 23:58
		Re: Check overlapping of two differen georeferenced images By: Brian Daniel on Mon, 04 February 2013 08:14
		Re: Check overlapping of two differen georeferenced images By: David Fanning on Mon, 04 February 2013 07:24

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