spectral density plot

[Ben Sapp]

Hello, 

I am having a little trouble using the spectral density estimators in
Octave.   I have a waveform with 500 samples.  Each sample is 200
picoseconds apart.   I would like to make a plot of the spectral density
vs. frequency.   Using spectral_xdf I am able to get a vector that is
supposed to represents the spectral density.   The first column is a set
of numbers from 0-1.  Should I scale these by some factor to get the
frequencies? 

Thanks  

-- 
Ben Sapp                         Los Alamos National Laboratory
email: <mailto:address@hidden>   Phone: (505)667-3277
Fax:   (505)665-7920             URL:   http://www.neutrino.lanl.gov/
--



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