matlab 双y轴画图

1、yyaxis left;yyaxis right

X=[1,2,3,4,5];
Y1=[1,2,3,4,5];
Y2=[500,400,300,200,100];
figure;
yyaxis left;
plot(X,Y1);
yyaxis right;
plot(X,Y2);

2、plotyy

X=[1,2,3,4,5];
Y1=[1,2,3,4,5];
Y2=[500,400,300,200,100];
figure;
plotyy(X,Y1,Y2);