what is the better eig function or pcacov and what the different between them

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primrose khaleed
primrose khaleed 2014-5-31
Hi ,,,,i want to extract the eigenvector on my dataset.. i know there are any function like (pcacov and eig)..i read is both functions get us the eig vectors my question: can i used both functions or one of them to finding eigenvectors??? i found code :
[n m] = size(A);
AMean = mean(A);
AStd = std(A);
% disp(AMean);
B = (A - repmat(AMean,[n 1])) ./ repmat(AStd,[n 1]);
B = zscore(A);
can i used instead of pcacov??? plz help me

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