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Nfft
Jul 20, 2023
Nonequispaced fast Fourier transform
NFFT is a software library, written in C, for computing non-equispaced fast Fourier transforms and related variations. It implements the following transforms
- Non-equispaced fast Fourier transform NFFT
- forward transform NFFT, i.e. frequency to time/space domain
- adjoint transform adjoint NFFT, i.e. time/space to frequency domain
- Generalisations
- to arbitrary nodes in time and frequency domain NNFFT
- to real-valued data, i.e. cosine transforms, NFCT, NFST
- to the sphere S^2 NFSFT
- to the rotation group NFSOFT
- to the hyperbolic cross NSFFT
- Generalised inverse transformations based on iterative methods, e.g. CGNR/CGNE
Checkout these related ports:
- Zn_poly - C library for polynomial arithmetic
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- Xtensor - Multi-dimensional arrays with broadcasting and lazy computing
- Xtensor-python - Python bindings for xtensor
- Xtensor-io - Xtensor plugin to read/write images, audio files, numpy npz and HDF5
- Xtensor-blas - BLAS extension to xtensor
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- Xlife++ - XLiFE++ eXtended Library of Finite Elements in C++