Complex FFT PtByPt (Not in Base Package)

Computes the Fourier transform of the set of input data.

initialize, when TRUE, initializes the internal state of the VI.
input data is a set of complex valued data.
sample length is the length of each set of incoming data. The VI performs computation on each set of data. The default is 100. sample length must be greater than zero.
FFT{X} is the complex Fast Fourier Transform of the set of input data.
error returns any error or warning condition from the VI. Refer to Point By Point Error Codes for more information about these conditions.