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Re: FFTs in IDL [message #5881 is a reply to message #5760]

Tue, 27 February 1996 00:00

Achim Hein
Messages: 42
Registered: February 1996

Member

<There seems to be no mistake, but simply no check in the procedure for
<the number of elements in the array being 2^X.

It seems so, but I think a Fourier-Transform-Algorithm has to
run for every array length and ist is IDL or MathLab that shows
correct transformation results for every array length. The algorithm
using no base two array length works a lot slower but he has to be correct or
not ?

<No, but sometimes painfull :-) Could REBIN help in doing this for 2D
<arrays?

REBIN interpolates the array and gives you no more information but
it costs a lot of time, so I think it is not the one solution.

Thanks

Achim Hein
Center for Sensor Systems
Optimal Signal Processing, Remote Sensing - SAR
University of Siegen
Germany

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[Message index]

		FFTs in IDL By: tom on Thu, 15 February 1996 00:00
		Re: FFTs in IDL By: Sergei Senin on Fri, 23 February 1996 00:00
		Re: FFTs in IDL By: Sergei Senin on Tue, 27 February 1996 00:00
		Re: FFTs in IDL By: Achim Hein on Tue, 27 February 1996 00:00
		Re: FFTs in IDL By: Sergei Senin on Tue, 27 February 1996 00:00
		Re: FFTs in IDL By: Achim Hein on Tue, 27 February 1996 00:00

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