I am estimating the pairwise spearman correlation co-efficients on the EEG signals. They are of large datasets and I use the following code to estimate these;
function [Spearman_Rho_results]=spearman_corr(data)
Channels=size(data,1);
for i=1:Channels
for j=1:Channels
one=data(i,:);
two=data(j,:);
Spearman_Rho=corr(one',two','type','s');
Spearman_Rho_results(i,j)=Spearman_Rho;
end
end
end
It works well for some datasets. However for a specific dataset, it gives the following eroor;
Error using corr (line 200)
Cannot compute rank correlations for complex inputs.
I am unable to get the reasoning behind why this error happens to only this specific dataset while the remaining ones works fine with.
Any help is really appreiciable.
Thanks
Kind regards,
