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Re: Polynomial warping of satellite images [message #12148 is a reply to message #12133]

Wed, 01 July 1998 00:00

wmc
Messages: 117
Registered: February 1995

Senior Member

In article 5658@cdc.noaa.gov, Andy Loughe <afl@cdc.noaa.gov> writes:
> What are the advantages of using POLYWARP or POLY_2D?
> I thought MAP_IMAGE or MAP_PATCH were supposed to accomplish this task.

> Liam Gumley wrote:
>> Has anyone tried warping large (say 2048x2048) satellite images to map
>> projections using POLYWARP and POLY_2D in IDL?

I thought that map_image and map_patch assume that the image is pasted into
a rectangle in lat-lon space, which has its sides EW and NS. Which is a major
failing, since most satellite passes aren't arranged so conveniently. This was
true last time I looked, and 5.1 doesn't seem to have improved it. Is use
of polywarp supposed to get round that problem? I'd be interested if so.

- William

---
William M Connolley | wmc@bas.ac.uk | http://www.nbs.ac.uk/public/icd/wmc/
Climate Modeller, British Antarctic Survey | Disclaimer: I speak for myself

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[Message index]

		Re: Polynomial warping of satellite images By: Liam Gumley on Thu, 02 July 1998 00:00
		Re: Polynomial warping of satellite images By: wmc on Wed, 01 July 1998 00:00
		Re: Polynomial warping of satellite images By: Andy Loughe on Tue, 30 June 1998 00:00

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