function y = means(x)
%
%
%   MEANS: average or mean value. For column vectors, MEANS(x) returns
%          the mean value. For matrices or row vectors, MEANS is a row
%          vector containing the mean value of each column. The only
%          difference with MATLAB function MEAN is for a row vector,
%          where MEANS returns the row vector instead of the mean
%          value of the elements of the row.
%
[m,n] = size(x);
if m > 1
     y = sum(x) / m;
else
y = x;
end