unc_n2_camel6plot.m

matlab最优化理论的实现

% clear
% clc
% lb=-3;
% ub=3;
% teix=0.01;
% [X,Y] = meshgrid(lb:teix:ub);
% Z=4*X.*X-2.1*(X.^4)+(X.^6)/3+X.*Y-4*Y.^2+4*Y.^4;
% mesh(X,Y,Z)
% axis([lb ub lb ub -10 400]);
% title('unc#n2#camel6');
% xlabel('x');
% ylabel('y');
% zlabel('z')
% 



% contour
lb=-3;
ub=3;
teix=0.01;
[X,Y] = meshgrid(lb:teix:ub,lb:teix:ub);
Z=4*X.*X-2.1*(X.^4)+(X.^6)/3+X.*Y-4*Y.^2+4*Y.^4;
v=[ -1 -0.5 0 0.1  1.0 3.0  100];
[c,h]=contour(X,Y,Z,v);
clabel(c,h);
title('unc#n2#camel6');
xlabel('x');
ylabel('y');