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Re: Another Map Projection Problem with Map_Proj_Init [message #78614 is a reply to message #78416]

Tue, 06 December 2011 05:35

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Fabzou writes:

> Just to be sure: if I never used UV_box values but a LOT of the
> projections I am using have a non-zero center longitude, this bug won't
> affect me in any sense, will it?

Well, I don't know. Probably not. I was using the information
to label my maps, and it was certainly affecting me there.
These kinds of errors make me a little nervous, because
I have the impression map projections are not really
understood at Excelis. This impression is nearly always
reinforced by the explanations I get for the error.
Although, to be fair, the explanation is almost always
passing through a third party, who I don't really expect
to understand map projections, and that may be adding
noise to the explanation.

In any case, I tend to use my own version of these map
routines, which fix the numerous problems I have encountered
while I've been looking into it. (Not to say my own programs
are completely bug free. But I do work hard to make sure they
are right.)

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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[Message index]

		Another Map Projection Problem with Map_Proj_Init By: David Fanning on Mon, 28 November 2011 07:50
		Re: Another Map Projection Problem with Map_Proj_Init By: David Fanning on Tue, 06 December 2011 05:35
		Re: Another Map Projection Problem with Map_Proj_Init By: Fabzou on Tue, 06 December 2011 02:32
		Re: Another Map Projection Problem with Map_Proj_Init By: David Fanning on Mon, 05 December 2011 16:43

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