设置画图时的x轴和y轴坐标

x = 0:0.01:2*pi; y = sin(x); plot(x,y,'r*'); set(gca,'Ytick',-1:1); %设置需要标注的点 set(gca,'Yticklabel',{'-1','0','1'});  %再标记后，才可以设定每个对应位置自己想要的字符表示 set(gca,'Xtick',0:pi/2:2*pi); set(gca,'Xticklabel',{'0','π/2','π','3π/2','2π'});