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Matthew Ferrara

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13 Oct 2009 NUFFT, NFFT, USFFT Implements 1D-3D NUFFTs via "Fast Gaussian Gridding." Author: Matthew Ferrara signal processing, image processing, mathematics, polar format algorith..., mri imaging, gridding 57 11
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25 Jan 2013 NUFFT, NFFT, USFFT Implements 1D-3D NUFFTs via "Fast Gaussian Gridding." Author: Matthew Ferrara No.2006, Xiyuan Ave, West Hi-Tech Zone No.2006, Xiyuan Ave, West Hi-Tech Zone

hi,i have problems with the 1D example,i cant get the right reslut.

eg:
F = FGG_1d_type1(f,knots,N,accuracy,GridListx)
the input data is nonuniformly-spaced frequency data?????!!!!

08 Jan 2013 NUFFT, NFFT, USFFT Implements 1D-3D NUFFTs via "Fast Gaussian Gridding." Author: Matthew Ferrara Ahmed Fasih

@David Craig, replace "//" C++-style comments in the offending files with "/* ... */" comments.

17 Nov 2012 NUFFT, NFFT, USFFT Implements 1D-3D NUFFTs via "Fast Gaussian Gridding." Author: Matthew Ferrara David Craig

Hi, I am having trouble compiling two of the .c files,
mex FGG_Convolution1D_type2.c
mex FGG_Convolution2D
give the following error,
>> mex FGG_Convolution1D_type2.c

Warning: You are using gcc version "4.6.3-1ubuntu5)". The version
currently supported with MEX is "4.3.4".
For a list of currently supported compilers see:
http://www.mathworks.com/support/compilers/current_release/

FGG_Convolution1D_type2.c: In function ‘mexFunction’:
FGG_Convolution1D_type2.c:67:16: warning: assignment discards ‘const’ qualifier from pointer target type [enabled by default]
FGG_Convolution1D_type2.c:69:16: warning: assignment discards ‘const’ qualifier from pointer target type [enabled by default]
FGG_Convolution1D_type2.c:71:16: warning: assignment discards ‘const’ qualifier from pointer target type [enabled by default]
FGG_Convolution1D_type2.c:72:5: error: expected expression before ‘/’ token
FGG_Convolution1D_type2.c:75:18: warning: assignment discards ‘const’ qualifier from pointer target type [enabled by default]

mex: compile of ' "FGG_Convolution1D_type2.c"' failed.

??? Error using ==> mex at 208
Unable to complete successfully.

Anyone seen this before,
Thanks
Dave

17 Nov 2012 NUFFT, NFFT, USFFT Implements 1D-3D NUFFTs via "Fast Gaussian Gridding." Author: Matthew Ferrara David Craig

should have mentioned I use MATLAB Version 7.12.0.635 (R2011a) on ubuntu 12.04

28 Jun 2012 NUFFT, NFFT, USFFT Implements 1D-3D NUFFTs via "Fast Gaussian Gridding." Author: Matthew Ferrara Ahmed Fasih

I tried getting the 1D example (forward and adjoint operators) to work with non-uniform samples and, after editing the Matlab function, got the forward transform half-way working before I gave up. The algorithm, used as instructed by the documentation, does not produce correct results as is. (Correctness is in comparison with the direct computation of the non-uniform DFT.)

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