创建图形对象

x=-4:0.5:4;
y=x;
[X,Y]=meshgrid(x,y);
Z=X.^2-Y.^2;
%% axes 创建坐标轴对象  并返回句柄ah
ah=axes('color',[0.4 0.4 0.4],'xtick',[-4 -3 -2 -1 0 1 2 3 4],'XTickLabel',{'a','b','c','d','e','f','g','h'},'Xcolor','b','ycolor','b','ytick',[-4 -3 -2 -1 0 1 2 3 4],'zcolor','b');

%% 绘制曲面
sh=surface('xdata',X,'ydata',Y,'zdata',Z,'Facecolor',get(ah,'color')+0.1,...
    'edgecolor','k','marker','o','markerfacecolor','r');
view(3);
%% 添加文本对象
text1=text('position',[-36.6,-45.58,186.6],'String','Figure','Color','b', 'FontSize',20);
%text1=text(-36.6,-45.58,186.6,'Figure');简单的方法
% text1.Color='b'; % text1.FontSize=20;