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JuliaMath / NFFT.jl

Julia implementation of the Non-equidistant Fast Fourier Transform (NFFT)
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Use of NFFT #111

Closed dashingdiggi closed 1 year ago

dashingdiggi commented 1 year ago

Dear Sir,

I recently started working on NFFT. I Have a really basic question about this package, please excuse me for that. I have irregularly sampled data in the time domain. Can I compute its spectrum using NFFT.jl? As I can see in the algorithm, NFFT requires data to be sampled regularly in any one of the domains. I really appreciate any help you can provide.

Thank you.

JeffFessler commented 1 year ago

That question is not so basic actually. I have some comments about it here: https://github.com/JeffFessler/mirt/blob/main/nufft/example_nufft1_reverse.m I would recommend using density compensation if you want to pursue this.

JeffFessler commented 1 year ago

You might want to take a look at this paper: https://arxiv.org/abs/2302.00414

tknopp commented 1 year ago

I think we can close this. Further user questions can be asked in our discussion forum: https://github.com/JuliaMath/NFFT.jl/discussions