I am getting different values of fft for the same variable as demonstrated by a simple example below...
3 views (last 30 days)
Show older comments
E=[1 2 4 6;3 6 3 9;7 5 8 9]
EF=fftshift(abs(fft(E)))
ES=fftshift(abs(fft(E(:,1))))
shouldn't ES be equal to the first row of EF...
0 Comments
Answers (1)
Paul
on 11 May 2024
I think you were expecting ES be equal to the first column of EF.
If desired for fftshift to work along a specific dimension of the input, then that dimension needs to be specified
E=[1 2 4 6;3 6 3 9;7 5 8 9];
EF=fftshift(abs(fft(E)),1) % specify the dimension
ES=fftshift(abs(fft(E(:,1))))
0 Comments
See Also
Categories
Find more on Fourier Analysis and Filtering in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!