Function : FFT - Fast Discrete Fourier Transform
Description
-
Performs the Fast Fourier Transform of an array.
Usage
fft(z, inverse = FALSE)
Arguments
- z - a real or complex array containing the values to be transformed.
- inverse - if TRUE, the unnormalized inverse transform is computed (the inverse has a + in the exponent of e, but here, we do not divide by 1/length(x)).