[tqr591513792]

大家讨论讨论下面这个程序怎么样分段显示出来?
x=0:0.1:8*pi;
h=plot(x,sin(x).*exp(-x/5),'EraseMode','xor');
axis([-inf inf -1 1]);
grid on
for i=1:5000
y=sin(x+i/50).*exp(-x/5);
set(h,'ydata',y);
drawnow
end