Statistics
5 Questions
0 Answers
RANK
209,727
of 300,392
REPUTATION
0
CONTRIBUTIONS
5 Questions
0 Answers
ANSWER ACCEPTANCE
0.0%
VOTES RECEIVED
0
RANK
of 20,934
REPUTATION
N/A
AVERAGE RATING
0.00
CONTRIBUTIONS
0 Files
DOWNLOADS
0
ALL TIME DOWNLOADS
0
RANK
of 168,373
CONTRIBUTIONS
0 Problems
0 Solutions
SCORE
0
NUMBER OF BADGES
0
CONTRIBUTIONS
0 Posts
CONTRIBUTIONS
0 Public Channels
AVERAGE RATING
CONTRIBUTIONS
0 Highlights
AVERAGE NO. OF LIKES
Feeds
Question
How to create 3D Fourier matrix?
I would like to create a Fourier matrix for a 3D fourier transform. I know that for 1D FFT in Matlab it can be created with dftm...
9 years ago | 0 answers | 0
0
answersQuestion
Lsqr first iteration without any initial guess
I am trying to solve argmin||Ax-B|| using lsqr with a function handle and without any initial guess. I thought that lsqr would h...
9 years ago | 0 answers | 0
0
answersQuestion
lsqr result strongly depends on weights
I need to solve argmin||W*FT^-1(Ax)-W*p|| using lsqr. p is image, x is k-space matrix, A is a matrix and W is a weighting matrix...
9 years ago | 1 answer | 0
1
answerQuestion
lsqr converged but returns large residual
I'm using lsqr. It converges, but I get this message: lsqr converged at iteration 10 to a solution with relative residual 0....
10 years ago | 1 answer | 0
1
answerQuestion
Creating huge fourier matrix
I need to minimize ||FT^-1(Ax-B)|| using lsqr. A is a huge matrix which I had to define using spalloc. Since fft() can't handle ...
10 years ago | 1 answer | 0
