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Re: AVHRR Image Mapping Problem [message #51843 is a reply to message #51842]

Fri, 15 December 2006 10:13

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Matt writes:

> If you'd rather use vector data to do the comparison, try the SRTM
> Water Bodies data http://edc.usgs.gov/products/elevation/swbd.html.
> This is a very accurate vector file outlining coastlines/waterbodies.

I have tried the GSHHS high-resolution shoreline data
with slightly better, but similar results. Fooling around
with the standard parallels gets parts of the map (not,
unfortunately, ALL parts at the same time!) correct, which leads
me to think it is a map projection problem. But on whose
end!?

All my "outline" routines rely on MAP_SET. I suppose
to get to the bottom of this I'll have to see if I can
get an outline strictly from a MAP_PROJ_INIT.

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: AVHRR Image Mapping Problem By: David Fanning on Fri, 15 December 2006 10:17
		Re: AVHRR Image Mapping Problem By: David Fanning on Fri, 15 December 2006 10:13
		Re: AVHRR Image Mapping Problem By: Jean H. on Fri, 15 December 2006 09:39
		Re: AVHRR Image Mapping Problem By: Braedley on Fri, 15 December 2006 09:44
		Re: AVHRR Image Mapping Problem By: Matt[1] on Fri, 15 December 2006 09:37
		Re: AVHRR Image Mapping Problem By: David Fanning on Fri, 15 December 2006 09:29
		Re: AVHRR Image Mapping Problem By: James Kuyper on Fri, 15 December 2006 09:21
		Re: AVHRR Image Mapping Problem By: Paul Van Delst[1] on Fri, 15 December 2006 08:11
		Re: AVHRR Image Mapping Problem By: David Fanning on Fri, 15 December 2006 08:10
		Re: AVHRR Image Mapping Problem By: David Fanning on Fri, 15 December 2006 07:55
		Re: AVHRR Image Mapping Problem By: James Kuyper on Fri, 15 December 2006 10:23

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