- empymod.transform.fourier_fftlog(fEM, time, freq, ftarg)#
Fourier Transform using FFTLog.
This function uses a simplified version of pyfftlog, which is a python-version of FFTLog. For more details regarding pyfftlog see https://github.com/prisae/pyfftlog.
Not the full flexibility of FFTLog is available here: Only the logarithmic FFT (fftl in FFTLog), not the Hankel transform (
hankel_dlfin FFTLog). Furthermore, the following parameters are fixed:
kr = 1 (initial value)
kropt = 1 (silently adjusts kr)
dir = 1 (forward)
Furthermore, q is restricted to -1 <= q <= 1.
The function is called from one of the modelling routines in
empymod.model. Consult these modelling routines for a description of the input and output parameters.
Returns time-domain EM response of fEM for given time.
Only relevant for QWE/QUAD.