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FFT with NANs in an array [message #49342]

Thu, 20 July 2006 11:00

adisn123
Messages: 44
Registered: July 2006

Member

Hi,

I'm trying to fourier transform a spacial domain image to frequency
domain using FFT function in IDL.

My image has quite a bit of NANs in an array, about 5%.

When I use FFT into the image, it doesn't give me any errors, but when
I inversely fourier transform after

filtering, it gives a little funky result.

How do I make FFT ignore NANs in their job or filtering?

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[Message index]

		FFT with NANs in an array By: adisn123 on Thu, 20 July 2006 11:00
		Re: FFT with NANs in an array By: Kenneth P. Bowman on Thu, 20 July 2006 19:48
		Re: FFT with NANs in an array By: adisn123 on Thu, 20 July 2006 17:08
		Re: FFT with NANs in an array By: Steve Eddins on Thu, 20 July 2006 12:44
		Re: FFT with NANs in an array By: Steve Eddins on Thu, 20 July 2006 12:42
		Re: FFT with NANs in an array By: Kenneth P. Bowman on Thu, 20 July 2006 12:24
		Re: FFT with NANs in an array By: R on Wed, 26 July 2006 15:47

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