[OT] Fourier analysis question using Gnumeric

[William Park]

On Wed, Sep 26, 2012 at 11:06:25PM -0400, Walter Dnes wrote:
> On Wed, Sep 26, 2012 at 01:20:16AM -0400, William Park wrote
> 
> > What you do want at the end?  Real signal is time-based, so frequency
> > spectrum is just the mean, not the end.  
> 
>   I'm interested in seeing if there are any repeating cycles in the
> data.

Then, what you want is "correlaton", more exactly "auto-correlation"
since I'm assuming you have only one signal.  If there were repeating
signal with a lag time, then you'll see a "spike" at that lag time in
auto-correlation.
-- 
William
--
The Toronto Linux Users Group.      Meetings: http://gtalug.org/
TLUG requests: Linux topics, No HTML, wrap text below 80 columns
How to UNSUBSCRIBE: http://gtalug.org/wiki/Mailing_lists