Computing wavenumber using fft2

Hi everyone,

I am working on an attenuation study using 52 shots with 51 receivers (traces). I already calculated the amplitude spectra using fft but now I want to calculate wavenumber which for what I read, I have to use fft2. However, I am having trouble because I cant seem to display results. nori2 is the matrix that is storing everything and it has 3 dimensions because in the filt_traces variable I stored the 52 shots with their respective time and traces, in this case 51. In other words, filt_traces is a 52x5001x51 matrix and I wanted nori2 to be the same size. Again, I exactly use this code for amplitude spectra and it worked, bt it seems not to work for fft.This is my code:

freq=0:20;

nori2=zeros(size(filt_traces,1),size(filt_traces,2),size(filt_traces,3));

for j=1:52

for i=1:51

data1=squeeze(filt_traces(j,:,i));

dataf1=fft2(data1);

%half1=dataf1(1:5001);

nori2(j,:,i)=data1;

end

imagesc(statID,freq,log(squeeze(nori2(j,:,:))))

title('Amplitude Spectra');

xlabel('Receiver number');

ylabel('Frequency(Hz)');

colormap(jet);

colorbar

pause

clf

end

Thank you!

Lucia