frequency vectors from cwt

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Kim
Kim 2017-8-22
I am running cwt with Morlet wavelets with this code:
for i=1:size(signal,3)
for ii = 1:size(signal,1)
[coef(:,:,ii,i),freq(:,:,ii,i),~] = cwt(signal(ii,:,i),wname,'NumOctaves',numOctaves,'VoicesPerOctave',numVoices,fs);
end
end
However, the frequency vectors appear to change depending on the value of ii and i. I don't understand this because we are using the same algorithm with the same parameters at each step. This means I cannot average across EEG trials because the psuedofrequencies do not line up. Has anyone ever experienced this problem? Thanks

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