Hi Nils, This is something that had been fixed just after the last SPM version was released. It should work fine if you change Line 79 in spm_dcm_ind_results.m into: TF{i,j} = TF{i,j} + xY.xf{i,j}(:,1:nf)*xY.U'; It will be fixed in the new SPM release but for now you could just change it in your code. Hope this solved the problem! Best, Bernadette 2014-09-30 12:14 GMT+01:00 Nils Rosjat <[log in to unmask]>: > Dear SPM experts, > > I tried to use the "Wavelet transform" button in the DCM for M/EEG window, > but I get an error message. The same happens when I try to save the files > as images after inverting the DCM. I think that is because it uses the same > function from spm_dcm_ind_results.m (case{lower('Wavelet')}). > > The error occurs, because the matrix dimensions of xY.xf{i,j} and xY.U' > don't match. The problem seems to be that in line 57 you remove the > unmodelled frequency modes in xY.U. That leads to a reduced dimension if > you use less then 8 modes (for example dimension 4x45 instead of 8x45). At > the same time the dimension of xY.xf{i,j} stays the same (for example > 144x8). At the moment I replaced xY.U' by xY.Uold' (that is a copy of xY.U > before removing the unmodelled modes). Is this a possible way to do it or > would that lead to a wrong time-frequency output? > > Best, > Nils > __________________ > Dipl.-Math. Nils Rosjat > University of Cologne > Biocenter > Zuelpicher Str. 47b > 50674 Cologne > [log in to unmask] >