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[Help-gsl] FFT phase issue

From: fperr089
Subject: [Help-gsl] FFT phase issue
Date: Wed, 13 Apr 2011 19:50:28 -0400 (EDT)
User-agent: SquirrelMail/1.4.9a

Hello, I was trying out the FFT routines in GSL and I am having a problem.
 If I enter a cosine function and fourrier transform it I should obtain a
purely absorptive line in the real output and a purely dispersive line in
the imaginary output.  Although, when I try this with the raddix routine I
obtain a partially dispersive and absorptive line in the real and
immaginary output, of the same phase.  Their phases should be opposite.  I
don't know if this is an issue with the routine or if I am missing
something, please reply if you have suggestions.


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