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Re: Array indices and lookup tables [message #39755 is a reply to message #39754]

Wed, 09 June 2004 06:42

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Haje Korth writes:

> I am working on a coordinate transformation for a map and I have a simple
> problem. My mind is alreay blocked early in the morning and I could use some
> input: I have an rgb image of dimensions [3,1440, 720]. I need to rearranged
> the pixel in the image according to a lookup table of dimension
> [2,1440,360], which contains the column and row of the new pixel assigned to
> a location. Is there a magic way to do this without looping through each
> pixel in IDL?

Oh, dear. Come back after I've had a couple of cups
of coffee, would you. :-(

Cheers,

David

P.S. With the (what!?) thousand different map projections
now in IDL, are you *sure* you need a look-up table? :-)

--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/

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[Message index]

		Re: Array indices and lookup tables By: David Fanning on Thu, 10 June 2004 06:59
		Re: Array indices and lookup tables By: David Fanning on Thu, 10 June 2004 06:57
		Re: Array indices and lookup tables By: Haje Korth on Thu, 10 June 2004 06:11
		Re: Array indices and lookup tables By: Chris Lee on Thu, 10 June 2004 01:39
		Re: Array indices and lookup tables By: Haje Korth on Wed, 09 June 2004 07:49
		Re: Array indices and lookup tables By: David Fanning on Wed, 09 June 2004 07:26
		Re: Array indices and lookup tables By: Haje Korth on Wed, 09 June 2004 07:06
		Re: Array indices and lookup tables By: David Fanning on Wed, 09 June 2004 06:42
		Re: Array indices and lookup tables By: Chris Lee on Thu, 10 June 2004 10:15

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