MathGroup Archive 1996

[Date Index] [Thread Index] [Author Index]

Search the Archive

Re: Fourier? (Q)

  • To: mathgroup at
  • Subject: [mg3608] Re: Fourier? (Q)
  • From: hohmuth at (Lars Hohmuth)
  • Date: Thu, 28 Mar 1996 00:09:51 -0500
  • Organization: Uni Ulm
  • Sender: owner-wri-mathgroup at

In article <4j7hq8$af4 at> mrsma at writes:
>From: mrsma at
To: mathgroup at
>Subject: Fourier? (Q)
>Date: 26 Mar 1996 01:38:16 GMT


>when i tried to go through the Fourier examples as per pgs 679-681 in the Mma bible;

>Mma kindly returned the following:
>Fourier[list] finds the discrete Fourier transform of a list
>   of complex numbers.
>{1, 1, 1, 1, -1, -1, -1, -1}
>Fourier[{1, 1, 1, 1, -1, -1, -1, -1}]

>i then tried the example on a PowerMac, NeXT, RS6000 and got the same reply.

>what am i missing here?

>m. r.

You fell for the old 
Mathematica-always-returns-the-exact-answer-if-fed-exact-numbers trap;-)

Try Fourier[N[{1,1,1,1,-1,-1,-1,-1}]] or Fourier[{1.,1.,1.,1.,-1.,-1.,-1.,-1,}]

Hope this helps,



  • Prev by Date: Re: Plot problem
  • Next by Date: Re: addressing matrix elements
  • Previous by thread: Re: Fourier? (Q)
  • Next by thread: Re: Fourier? (Q)