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Sinc interpolation #145
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I was thinking about a possible sinc interpolation implementation: A naive (and probably the mathematically correct one?) sinc interpolation is to calculate the FFT of the samples, zero pad the FFT spectrum and calculate the IFFT of the padded spectrum. However, this repository seems to calculate interpolations differently. It construct a A explicit sinc interpolation formula can be also written down, but it's evaluation is So what do you think? Is there a way that we adapt the whole API to a use case, where you need so specify a whole new grid beforehand? Edit: I've found a similar discussion in #282 which indicates that we don't want to depend of FFTW.jl |
We probably would want to use https://github.com/JuliaMath/AbstractFFTs.jl . There a good point there that perhaps Fourier based interpolation should be a separate package. Also see the |
I'm not sure whether AbstractFFT.jl helps. |
I started to work on a proper FFT interpolation and stumbled over certain problems and created a discourse post. Hopefully this helps in solving this properly and we could register this. |
RE comment here
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