例子:设x=1:0.01:100;4 k' c7 M7 x' L# M4 D) Y+ `
y1=0.2*sin(x);+ \" c& x/ M5 S3 K9 J4 s9 p6 v
y2=0.3*sin(x);8 k. S0 A; w! z& x9 Q8 ~
y3=0.4*sin(x);
# \1 _1 Q- m6 c; j: _ y4=0.5*sin(x);
3 t/ S7 e) X/ t: K, Y4 ^' b y5=0.6*sin(x);
2 k1 {8 t( [) `' O* j2 ~ % j* Z3 G/ u/ _2 F6 ^* G1 s3 M
6 _ Q' I: F |5 k' Q3 J 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:
8 d5 a; }1 Q4 W5 a figure;
6 L5 Y$ r" x9 E [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
1 i8 `" L, Q& Y6 i: X6 ] set(AX(1),'ycolor','k') %设置左边坐标轴为黑色. O) [( g3 Q- q! h O3 s
set(AX(2),'ycolor','r') %设置右边坐标轴为红色
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8 t3 _8 G: @0 O) J6 P set(h1,'linestyle','-','color','k') %设置曲线y1为黑色
- g0 v+ \1 s" R3 o) B set(h2(1),'linestyle','-','color','r') %设置曲线y2为红色
3 H+ C* X0 g( I% @6 S
9 y4 o& U+ P3 G6 G set(h2(2),'linestyle','-','color','g') %设置曲线y3为红色
5 L/ [# |7 ~2 l* L& x# F: \/ h# S/ K; }( g5 @. x6 d c
......
6 [: I) v3 U! T1 @ 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:
- S, [/ X+ h9 E6 e figure;$ d0 P5 B, g# ]# j- B$ w
plot(x,y1,'k-')$ a6 U" o: L6 z* }; O' o/ A) M
[AX,h1,h2]=plotyy(x,y2,x,[y3;y4;y5]);
- }7 U$ g3 N! I/ Q+ F ......相关设置同上。. K6 c6 ^$ c9 }. [. l
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& ^" m9 S5 L. ^' O
- M9 S" a9 n1 J1 @$ N+ ~5 Q7 ?0 y' L2 X3 ^; C) T
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