Matlab 绘制阴影效果的曲线t=0:pi/20:2*pi;

hline1=plot(t,sin(t),'k','linewidth',4);%绘制曲线

hline2=line(t+0.3,sin(t),'linewidth',6,'color',[0.8 0.8 0.8]);%右移0.3绘制阴影

set(gca,'children',[hline1 hline2]);%将hlin1显示在hline2之前以突出阴影效果

set(gcf,'position',[450 300 300 200],'menubar','none');%设置绘图窗口界面

绘制效果如下：