unc_nn_rosenbrock2plot.m

matlab最优化理论的实现

%the dimension is two ,n=2;

clear
clc
lb=-2.408;
ub=2.408;
teix=0.02;
[X,Y] = meshgrid(lb:teix:ub);
Z=100*(Y.^2-X).^2+(1-X).^2;


% % % mesh
% mesh(X,Y,Z)
% axis([lb ub lb ub 0 7000]);
% 
% title('unc#nn#rosenbrock2');
% xlabel('x');
% ylabel('y');
% zlabel('z')
% 
% 


% % contour
v=[0  1  50  200 1000];
[c,h]=contour(X,Y,Z,v);
clabel(c,h);
title('unc#nn#rosenbrock2');
xlabel('x');
ylabel('y');