Why do you want to separate the columns? To access data of a specific customer, just use indexing into your matrix. This will keep your code very clean. You can retrieve the data of each customer
for k=1:size(OriginalMatrix,2)
CustomerData = OriginalMatrix(:,k) ;
% process, for instance, take the mean:
MeanValue(k) = mean(CustomerData) ;
end
but often you can take advantage of ML capability to operate on multiple columns at once! The code above can be replace by the statement:
MeanValue mean(OriginalMatrix,1) ;
