Improve `fit.robust_nfreq_sumsin_fit()` with fast fourier transform?

GlacioHack / xdem

Analysis of digital elevation models (DEMs)

https://xdem.readthedocs.io/

MIT License

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Improve `fit.robust_nfreq_sumsin_fit()` with fast fourier transform? #516

Open rhugonnet opened 2 months ago

rhugonnet commented 2 months ago

Right now the basinhopping algorithms allows to converge to a nice combination of different frequency sinusoids, but only if bounds are nicely defined and passed. Those could be constrained first (especially the wavelength/amplitude) using a FFT.