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Re: AVHRR Image Mapping Problem [message #51848 is a reply to message #51847]

Fri, 15 December 2006 09:21

James Kuyper
Messages: 425
Registered: March 2000

Senior Member

David Fanning wrote:
> Folks,
>
> Does anyone have any experience working with AVHRR NDVI
> image data or Albers map projection? I have obtained
> the data, which is of the African continent from here:
>
> ftp://ftp.glcf.umiacs.umd.edu/glcf/GIMMS/Regional/Albers/Afr ica
>
> The image is in an Albers Conical equal area projection
> and the centers of the four corner pixels are known from
> the documentation:
>
> ; YX coordinates of the four corners (LL, UL, UR, LR)
> longitude = [-23.49, -24.6, 64.523, 63.414]
> latitude = [-42.243, 43.711, 43.712, -42.242]
>
> This is a GeoTiff file, so I also pull the Standard
> Parallels out of the geotiff information stored in
> the file (they are -19 and 21).

One thing you could check is the possibility that the standard
parallels are reversed: does it work better if you use -21 and +19?

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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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