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Re: IDL projections (MAP_PROJ_IMAGE) and ENVI projections, Select spatial substets of images [message #71202 is a reply to message #71201]

Mon, 07 June 2010 04:59

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

sh writes:

> I already saw your example of how to warpe images, but this only shows
> how to project already projected images. And my image is "raw"
> lat,lon.

I'm not sure what "raw" means. But these are
probably just geographic coordinates. This is
sometimes called a plate carree map projection,
or--in GCTP parlance--an equirectagular projection.
>
> Anyway, at least I found a (very old) program which does and can
> exactly what I want. Maybe someone could take a look, if the results
> are correct!? Or where is room for improvement?!

"Correct" in what sense? It is certainly not the
kind of projected data you can do science with, as
Liam points out in his notes. It is a "display"
solution. In this sense, if it "looks good" it is
probably correct enough.

Cheers,

David

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

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[Message index]

		Re: IDL projections (MAP_PROJ_IMAGE) and ENVI projections, Select spatial substets of images By: d.poreh on Mon, 07 June 2010 05:06
		Re: IDL projections (MAP_PROJ_IMAGE) and ENVI projections, Select spatial substets of images By: David Fanning on Mon, 07 June 2010 04:59
		Re: IDL projections (MAP_PROJ_IMAGE) and ENVI projections, Select spatial substets of images By: sh on Mon, 07 June 2010 01:50
		Re: IDL projections (MAP_PROJ_IMAGE) and ENVI projections, Select spatial substets of images By: David Fanning on Tue, 08 June 2010 06:20
		Re: IDL projections (MAP_PROJ_IMAGE) and ENVI projections, Select spatial substets of images By: sh on Tue, 08 June 2010 06:13

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