底层代码创建GUI

 %底层代码创建GUI

 hf = figure(...
     'Units','Normalized',...
     'Color','w',...
     'Position',[0.1 0.1 0.8 0.8]);

 ha=axes(...
     'Parent',hf,...
     'Units','Normalized',...
     'Position',[0.1 0.1 0.6 0.8],...
     'NextPlot','Add');

 hb1=uicontrol(...
     'Style','pushbutton',...
     'Callback','str,delete(cllchild(ha));end',...
     'String','clear',...
     'Units','Normalized',...
     'Position',[0.8 0.2 0.2 0.15]);

 hb2=uicontrol(...
     'Style','pushbutton',...
     'Callback','plot(sin([0:0.01:10]))',...
     'String','sin',...
     'Units','Normalized',...
     'Position',[0.8 0.4 0.2 0.15]);

 hb3=uicontrol(...
     'Style','pushbutton',...
     'Callback','plot(cos([0:0.01:10]))',...
     'String','cos',...
     'Units','Normalized',...
     'Position',[0.8 0.6 0.2 0.15]);