Hello all,

In the field of mechanical vibrations;

If you are asked to calculate the Fourier coefficients of equally spaced data, what is the "best" NR routine to use?

Thanks
Matt

There aren't any choices! The only FT routine defined in NR is four1, in section 12.1.

Note that the algorithmm used requires that the length of the data be a power of 2. NR simply doesn't support other lengths.