[OT] Fourier analysis question using Gnumeric

[Zbigniew Koziol]

On 09/27/2012 05:59 PM, William Park wrote:
> 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.
>
I would not use gnumeric in the first place. It should have, I guess, an 
option to export data to a text file?
Than you are free to use other software. There is a lot of that around 
that can do even complex calculations. A simple example is to use Perl 
with  Math::FFT . There is Octave (free, like Matlab), SciLab, etc.



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