Re: [R] Fourier Analysis Help

2009-03-13 Thread Murray Cooper
2:46 PM Subject: [R] Fourier Analysis Help 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 (w

Re: [R] Fourier Analysis Help

2009-03-13 Thread 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 wrote: > Dear R-help members, > > To whom it may concern, our research group is conducting a study to evaluate > the predic

[R] Fourier Analysis Help

2009-03-13 Thread Vittorio Colagrande
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 o