例子:设x=1:0.01:100;
9 p' }4 D9 U5 E% f y1=0.2*sin(x); [8 e- u4 O# K
y2=0.3*sin(x);2 {0 \1 @' N; R I5 G
y3=0.4*sin(x);
F" O! i8 f0 M0 I% S5 w! a y4=0.5*sin(x);+ w5 R3 E% s/ [, H o% H
y5=0.6*sin(x);- ]0 H8 H5 q/ `0 B1 }
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以左边坐标轴为参考画一条曲线,以右边坐标轴画四条曲线:
5 ?6 r. z& B( p figure;7 d/ w5 `1 G* E* h
[AX,h1,h2]=plotyy(x,y1,x,[y2;y3;y4;y5]); %用分号还是逗号视y矩阵而定,保持[y2;y3]长度和x一致
5 e" _: d$ @7 b' p set(AX(1),'ycolor','k') %设置左边坐标轴为黑色 k8 f: v5 a& T0 c! z
set(AX(2),'ycolor','r') %设置右边坐标轴为红色( j4 m" d" Y- p( s5 C' U4 o6 S
* S0 P& |3 w. m1 h) G! v8 m set(h1,'linestyle','-','color','k') %设置曲线y1为黑色
2 G2 {( ]9 C, a; R: j6 k set(h2(1),'linestyle','-','color','r') %设置曲线y2为红色
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" G8 F: f* o! z% ~$ i9 v set(h2(2),'linestyle','-','color','g') %设置曲线y3为红色( h: ?: Z0 b ]- O
8 O0 m1 H+ \* V* w4 T- y& y; f ......
, U2 s% g* I8 e" A4 v- F/ v 以左边坐标轴为参考画两条曲线,以右边坐标轴画三条曲线:
, A$ V5 { p1 {9 L" Y0 B/ b7 Z% S figure;
4 H2 c% a3 c( G/ X a" x plot(x,y1,'k-')
- f3 N9 h M E$ J9 U* a [AX,h1,h2]=plotyy(x,y2,x,[y3;y4;y5]);6 B( X/ g: v+ E
......相关设置同上。
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