delete_example.m

matlab从入门到精通第9章书后源码对初学者很有帮助

% delete_example.m 
% 创建图形对象句柄
 t=linspace(1,10,100);
 y=exp(-t/2).*sin(3*t);
 Hf_plot=plot(t,y,'-r*','LineWidth',2,'MarkerEdgeColor','k',...
     'MarkerFaceColor','g','MarkerSize',10);
 % 添加文本注释
 text(2.1,-0.3,'\fontsize{12}y=exp(-t/2).*sin(2*t)','Tag','A2');