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Fourier transforms

• To: mathgroup at smc.vnet.net
• Subject: [mg5954] Fourier transforms
• From: dimiter at shemesh.chem.purdue.edu (Dimiter Petsev)
• Date: Wed, 5 Feb 1997 21:11:45 -0500
• Sender: owner-wri-mathgroup at wolfram.com

When performing Fourier transforms with Fourier[] I get a list of complex 
numbers, although I know that all the data are real.  Can anyone advise me how 
to convert the result to real numbers.  I guess it has to do something with the 
exponential in the Fourier algorithm.  Is there a numerical Sin (or Cos) 
transform package?
Any comment will be appreciated!
Dimiter