[R] fft help

[Kenneth Cabrera]

Hi R-users:
I want to know if there is an easy way to obtain a Fourier Transform form
a vector or an array (just like fft does),  but with a more density base.
I mean, if I have a vector of 512 of length, I want the Fourier 
Transform to
be 1024, or 2048, etc, in length (de u domain). Or should I modify the
fft C code to do that?


If I want to modify the precision of the fft function, which parameter
of the .Machine option do I modify, and how?

Thank you for your help.

Kenneth Cabrera