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MathGroup Archive 1998

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Re: Attach frequency list to a list of fourier tranformed numbers

  • To: mathgroup at smc.vnet.net
  • Subject: [mg14688] Re: [mg14649] Attach frequency list to a list of fourier tranformed numbers
  • From: Andrew Watson <abwatson at mail.arc.nasa.gov>
  • Date: Sun, 8 Nov 1998 21:15:46 -0500
  • Sender: owner-wri-mathgroup at wolfram.com

At 11:09 PM -0800 11/6/98, Raymond Duplessis wrote:
>How do I attach the actual frequency values to a list of numbers
>transformed using the Fourier[list] command? Please help send e-mail if
>possible
>
>promo777 at aol.com

The first number is 0 frequency, the second is 1 cycle/length of input
list, and so on, up to n/2, at which point the values decrement from
-n/2-1 cycles/length.

Andrew B. Watson
MS 262-2
NASA Ames Research Center
Moffett Field, CA 94035-1000
(650) 604-5419	(650) 604-0255 fax
abwatson at mail.arc.nasa.gov	http://vision.arc.nasa.gov/


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