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Re: GeoTiff- grid [message #58157 is a reply to message #58127]

Mon, 21 January 2008 17:48

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Robinson writes:

> Hi David, today I was following http://www.dfanning.com/map_tips/tiffoverlay=
> .html
> ALL day. Probably I missed something. Let s se what happen tomorrow.

Humm, well, OK, here is an article that spells it out:

http://www.dfanning.com/map_tips/pixel_to_ll.html

Be aware, however, that there is an error either in this
article, or in the previous one. But the two articles
can't *both* be right. ;-)

Here is my problem, perhaps someone can help. Do the
corner values printed out by a program like GeoTiff dump
program like listgeo list the values in the *center* of
the corner pixels in the image, or values on the *edge*
of the image?

If the former, then the new article is correct and the
old article is incorrect. If the latter, then five days
of struggling with this leaves me no further ahead then
I was before. :-(

Have I mentioned that I *hate* map projections?

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: GeoTiff- grid By: robinson.inj on Tue, 22 January 2008 14:40
		Re: GeoTiff- grid By: David Fanning on Tue, 22 January 2008 14:23
		Re: GeoTiff- grid By: robinson.inj on Tue, 22 January 2008 14:03
		Re: GeoTiff- grid By: David Fanning on Tue, 22 January 2008 13:12
		Re: GeoTiff- grid By: David Fanning on Mon, 21 January 2008 17:48
		Re: GeoTiff- grid By: robinson.inj on Mon, 21 January 2008 17:03
		Re: GeoTiff- grid By: David Fanning on Mon, 21 January 2008 14:39
		Re: GeoTiff- grid By: David Fanning on Tue, 22 January 2008 14:47

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