[R] Fourier Analysis Help

[stephen sefick]

Have you done any homework.  help.search() or ...  spectrum will
produce a spectrum and fft is the underlying function.

On Fri, Mar 13, 2009 at 2:46 PM, Vittorio Colagrande
<colavittorio at virgilio.it> wrote:
> Dear R-help members,
>
> To whom it may concern, our research group is conducting a study to evaluate the predictive
> value of 24 hour blood pressure variability.
> We are looking for an R routine that performs a fast Fourier transform spectral analysis
> (with an output of the approximation function of the Fourier and estimates the validity
> of the model for the various harmonics).
> Thanks
> Vittorio Colagrande
>        [[alternative HTML version deleted]]
>
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> and provide commented, minimal, self-contained, reproducible code.
>



-- 
Stephen Sefick

Let's not spend our time and resources thinking about things that are
so little or so large that all they really do for us is puff us up and
make us feel like gods.  We are mammals, and have not exhausted the
annoying little problems of being mammals.

								-K. Mullis