{"name":"nfft-3","portdir":"math/nfft-3","version":"3.5.0","license":"GPL-2+","platforms":"darwin","epoch":0,"replaced_by":null,"homepage":"http://www.nfft.org/","description":"Fast C routines to compute the Non-equispaced Discrete Fourier Transform","long_description":"NFFT3 is a software library written in C for computing nonequispaced fast Fourier \n and related transformations. In detail, NFFT3 implements \n 1) The nonequispaced fast Fourier transform (NFFT) \n - the forward transform (NFFT) \n - the adjoint transform (adjoint NFFT) \n 2) Generalisations of the NFFT \n - to arbitrary knots in time and frequency domain (NNFFT) \n - to the sphere S^2 (NFSFT) \n - to the hyperbolic cross (NSFFT) \n - to real-valued data, i.e. (co)sine transforms, (NFCT, NFST) \n - to the rotation group (NFSOFT) \n 3) Generalised inverses based on iterative methods, e.g. CGNR, CGNE \n 4) Applications in \n - medical imaging \n * magnetic resonance imaging \n * computerised tomography \n - summation schemes \n * fast Gauss transform (FGT) \n * singular kernels \n * zonal kernels \n - polar FFT, discrete Radon transform, ridgelet transform","active":true,"categories":["math"],"maintainers":[{"name":"jens","github":"","ports_count":1}],"variants":["kaiserbessel","gaussian","bspline","sinc","universal"],"dependencies":[{"type":"build","ports":["clang-9.0"]},{"type":"lib","ports":["fftw-3"]}],"depends_on":[]}