unc_nn_schwefelplot.m

it contains many classic Test Problems for Unconstrained Optimization such as camel6,treccani,goldst

%the dimension is two ,n=2;

clear
clc
lb=-500;
ub=500;
teix=1;
[X,Y] = meshgrid(lb:teix:ub);
Z=-X.*sin(sqrt(abs(X)))-Y.*sin(sqrt(abs(Y)));


% % mesh
mesh(X,Y,Z)
axis([lb ub lb ub -1000 1000]);

title('unc#nn#Schwefel');
xlabel('x');
ylabel('y');
zlabel('z')


% % % % contour
% v=[-1000 -500 -200 0 200  1000];
% [c,h]=contour(X,Y,Z,v);
% clabel(c,h);
% title('unc#nn#Schwefel');
% xlabel('x');
% ylabel('y');