e0656.m

来自「《MATLAB 7.X程序设计》-王建卫-源代码及习题答案」· M 代码 · 共 8 行

x=(-3*pi:pi/50:3*pi)+eps;y=sin(x).^2+cos(x);
lin=plot(x,y);
cm=uicontextmenu;      %创建控制曲线颜色的快捷菜单，有红色、蓝色和绿色三个选择项
uimenu(cm,'label','Red','callback','set(lin,''color'',''r''),')
uimenu(cm,'label','Blue','callback','set(lin,''color'',''b''),')
uimenu(cm,'label','Green','callback','set(lin,''color'',''g''),')
set(lin,'uicontextmenu',cm)