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Re: Congrid/Rebin Conundrum [message #55928 is a reply to message #55927]

Thu, 13 September 2007 06:57

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

wlandsman writes:

> Well, first of all CONGRID ignores the /INTERP and CUBIC keywords when
> shrinking an array. (There is no straightforward way to interpolate
> when shrinking an image. Think about it for a while.)
>
> So CONGRID is always just resampling your 4 x 4 array to a 1 x 1
> array, so it just takes the value of data[0,0]. --Wayne

OK, suppose I buy that. Then what is REBIN doing?

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: Congrid/Rebin Conundrum By: wlandsman on Thu, 13 September 2007 07:28
		Re: Congrid/Rebin Conundrum By: David Fanning on Thu, 13 September 2007 06:57
		Re: Congrid/Rebin Conundrum By: wlandsman on Thu, 13 September 2007 06:48

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