function me = mean(chr)
% STD - Average value
%    For vectors, MEAN(chr) returns the mean value of the members
%    in the population. For matrices, MEAN(chr) is a column vector
%    containing the average value of each row
% 
% See also MAX,MIN,MEDIAN,STD
[m n]=size(chr);
for k=1:m
  for l=1:n
    fit(l)=get(chr(k,l),'fitness');
  end
  me(k,1)=mean(fit);
end