Autocorr function for each column of a matrix

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Christian Portocarrero
I want to find the autocorrelation for each column of a matrix, from column 3 to the end of the columns. I also want to store this results in a vector named acorr_yld. I use the following:
if true
% acorr_yld(1,:) = autocorr(data{4}(:,3:end),1)
end
This setting works for the function mean and std however, this does not work for autocorr. What am I missing? I get the following error:
if true
% Error using autocorr (line 83)
% Input series must be a vector.
end

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