例子:设x=1:0.01:100;
) w* c1 ?7 e2 |) K( [9 m* G4 W y1=0.2*sin(x);
1 b4 `$ R* g% }% s y2=0.3*sin(x); K& _' [, h+ Y2 ?! K! o8 L j" \& y
y3=0.4*sin(x);
5 R. P1 \& U" K M- e5 K y4=0.5*sin(x);
9 _5 u; Z- t2 v y5=0.6*sin(x);
5 o1 ~2 k* w8 `5 n, ~ K * V4 p0 g' q2 Y1 y# {7 A
7 o, Q" g Y$ } 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:
' {$ k5 o- Z, _, H% {$ j+ l. B figure;
, o& g C4 J4 F [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
6 U$ c5 O! Z: w% k/ D set(AX(1),'ycolor','k') %设置左边坐标轴为黑色( i/ ~; q) t" h% n
set(AX(2),'ycolor','r') %设置右边坐标轴为红色7 @6 w' ]9 D! U5 Q, c
, R5 i: @9 _$ X! ] set(h1,'linestyle','-','color','k') %设置曲线y1为黑色1 v$ Y7 Y1 V" l
set(h2(1),'linestyle','-','color','r') %设置曲线y2为红色
# B% b' z: C' W9 M' J! F$ D2 X: _4 A7 ~( z
set(h2(2),'linestyle','-','color','g') %设置曲线y3为红色
. _! O2 a7 S5 ^0 v7 @' P F1 h' x1 y, h% r8 |' o& d3 G
......0 ~* M2 V5 d9 V k0 ]
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:1 T( O4 L3 _8 u7 t2 ]
figure;( }/ b2 r# T7 Z. O$ Z
plot(x,y1,'k-'), w# n4 v4 m/ _" N( o: t
[AX,h1,h2]=plotyy(x,y2,x,[y3;y4;y5]);, A$ f1 Y" ]" h# z5 c9 m
......相关设置同上。7 k5 k. _ C# b. M% Z9 C* w
# O; p, ]+ D) z4 ]
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7 x2 `: i4 k3 G+ D) B
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