inverse FFT

[Andrew Wittenberg <andyw@xxxxxxxxxxxxxxxxxxxx>]

Hello fantastic Ferret users,

I'm wondering if anyone has written an external function to do an inverse
Fourier transform in Ferret.  The function (call it FFTINV) would input
the complex frequency and produce a real timeseries, such that
FFTINV(FFTA(h),FFTP(h)) would be identical to h.  This would make it easy
to do Fourier filtering.

Thanks,

Andrew

----------------------------------------------------------------------
Andrew Wittenberg          Program in Atmospheric and Oceanic Sciences
andyw@splash.princeton.edu                        Princeton University
----------------------------------------------------------------------