MATLAB遗传代码的源码 具体如何使用？希望能受到指点

				function [sdata,m,s]=mcen(temp)
				%
				% Function to scale data by subtracting mean and / s.d.
				%
				
				[D L]=size(temp);
				
				sdata=zeros(D,L);
				m=mean(temp);
				s=std(temp);
				for i = 1:L
					sdata(:,i)=temp(:,i)-m(:,i);
					sdata(:,i)=sdata(:,i)/s(i);
				end