matlab中有多种填充曲线之间空间颜色的方法，在此介绍几种常用颜色填充方法) Y/ g9 H4 A% G3 V' }: @: R. Z4 u
1. fill命令/ M- b0 \- ^+ R R p
fill命令填充曲线的颜色的引用格式：& W% x" q' m; [; \
例1：填充sin曲线与0线之间的空间颜色为红色5 k5 u. y' ` r: {& ^
x = 0:0.01:2*pi;' n/ R3 d M7 n# s' l
y = sin(x);: r" X5 ~5 t1 e6 {7 ~. U9 ~, U1 U
fill([x,fliplr(x)],[y,0*ones(1,length(y))],'r')
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例2：修改填充色的透明度
: k& x7 Y" `4 b7 B+ vx = 0:0.01:2*pi;/ c. S& `& s/ o; c3 J- {! H. t* s
y = sin(x);/ D$ u/ O4 @0 `& W2 }* s: M, t4 G% z
h = fill([x,fliplr(x)],[y,0*ones(1,length(y))],'r');
1 j; K3 n! p6 P" Z. _3 Zset(h,'edgealpha',0,'facealpha',0.3)
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例3：三维填充色
: E4 z3 a9 w7 X tclose all;figure
6 r* j# t. k8 o- q' e2 S$ \' Q' ~* D[xx,yy] = meshgrid(1:10,1:10); l4 @( V/ s g5 h2 C8 q
fill3([xx(1, fliplr(xx(1,)],[yy(1, yy(end,],0*ones(1,2*length(yy(1,)),'r')
' e1 E9 u9 I5 l) Kgrid on;
, w/ U" E. t4 x( dhold on;. Q5 r; O' v H- Z7 W
fill3([xx(:,1);flipud(xx(:,end))],[yy(:,1);flipud(yy(:,end))],1*ones(1,2*length(yy(:,end))),'g')1 g' h8 [% s' h
h = fill3([xx(:,1);flipud(xx(:,end))],[yy(:,1);flipud(yy(:,end))],-1*ones(1,2*length(yy(:,end))),'b');6 K) j# h2 b4 L, N/ x* D
set(h,'edgealpha',0,'facealpha',0.3)
& ]& G C) E4 d/ [% p l0 u7 Wzlim([-2 2])
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8 u3 a3 z( E7 q7 F( _0 K2. patch命令5 x- d5 c0 d% i( H
patch命令引用格式与fill类似% u1 P( U6 N( ~3 V* [" Y; S. ]% N6 W
例1：
: @; ]5 Q1 M4 p- ?0 j* }close all;figure
$ l0 ~/ e; k9 C3 lx = 0:0.01:2*pi;
3 K( ^. V3 p' \% Py = sin(x);
) F4 E8 }5 d) n6 Z" l! C1 K, tpatch([x,fliplr(x)],[y,0*ones(1,length(y))],'r')
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1 S! r- |; C6 }: E% F7 W! u" [例2：
3 ]% Y- ~. j! @close all;figure
; o$ }( W, [. r% Q/ @x = 0:0.01:2*pi;3 c, H, G+ |5 l* ^
y = sin(x);. D6 M& z7 a% B- @ v! ?- j
h = patch([x,fliplr(x)],[y,0*ones(1,length(y))],'r')；
' m1 b% x( z: P: j9 L6 ~" j m6 ~set(h,'edgealpha',0,'facealpha',0.3)( t6 k, ? X8 n5 M
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例3：' k: g# D. P. i
三维填充7 i& \7 U! Z) S; \, F6 P! K& I
close all;figure1 A* C0 n+ T' k5 g; W
[xx,yy] = meshgrid(1:10,1:10);
$ b. f+ b5 \9 _+ ^4 s% }patch([xx(1, fliplr(xx(1,)],[yy(1, yy(1,],[-1*ones(1,length(yy(1,)) 1*ones(1,length(yy(1,:)))],'r')
, y( b* ~/ Z. v$ e; o+ pgrid on;
/ S3 R# [) V F% Chold on;
. z) |# G/ P3 i Z) R7 rpatch([xx(1,:) fliplr(xx(1,:))],[yy(2,:) yy(2,:)],[-1*ones(1,length(yy(1,:))) 1*ones(1,length(yy(1,:)))],'g')
- G2 i! {4 |6 ~6 A1 C; \' ]4 Xh = patch([xx(:,1);xx(:,1)],[yy(:,1);flipud(yy(:,end))],[-1*ones(1,length(yy(1,:)))... 1*ones(1,length(yy(1,:)))],'b');, l8 t0 E- B! U V* a% y
set(h,'edgealpha',0,'facealpha',0.3)
+ _! m T0 [7 X4 S: f, f# K! zzlim([-2 2])
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