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IDL 4.0.1 Windows: FFT Pblm [message #5139]

Mon, 02 October 1995 00:00

mahan
Messages: 17
Registered: October 1994

Junior Member

The Problem:
IDL 4.0.1 for Windows returns -1.#IND0 and 1.#QNAN values for
FFTs of arrays that are a power of 2 in dimension. When I increase the number
of data points to 2^n+1 (or anything BUT 2^n number of data points), I get
reasonable results. If the /double switch is set, the FFT works fine for
any size in 1 or 2 D anyway.

I'm running IDL 4.0.1 under windows 95 on a Cyrix 486DX50 platform.

Any ideas or similar problems? It seemed to work fine in version 4.0.

-Steve

__________________________
Stephen L. Mahan
mahan@aurora.phys.utk.edu

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