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MathGroup Archive 2004

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Re: fourier ( FFT )

  • To: mathgroup at smc.vnet.net
  • Subject: [mg52115] Re: [mg52077] fourier ( FFT )
  • From: Sseziwa Mukasa <mukasa at jeol.com>
  • Date: Thu, 11 Nov 2004 04:52:24 -0500 (EST)
  • References: <200411100945.EAA11193@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

On Nov 10, 2004, at 4:45 AM, bar at ANTYSPAM.ap.krakow.pl wrote:

> Hi
>
> My file has form:
> x1  f(x1)
> x2  f(x2) ....
>
> How can I use Mathematica to obtain frequencies ?
>
> Fourier[] works on only one list!

See http://forums.wolfram.com/mathgroup/archive/2003/Sep/msg00062.html.

>
> When i tested with f(x)=Sin[a x] sometimes
> i obtained wrong result.

I am not sure what you mean by the wrong result.

Regards,

Ssezi


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