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3 W4 I8 ~! d4 F7 ~; J
1. fill命令$ J q8 V' y D8 @1 g
fill命令填充曲线的颜色的引用格式：# Y& Q+ b2 S$ D N1 f4 o
例1：填充sin曲线与0线之间的空间颜色为红色
P, J/ o- ~0 R' }5 G5 ^9 Dx = 0:0.01:2*pi;) x0 A& `) ?9 T. R
y = sin(x);
( P( v, W6 e% u1 ^$ O: {fill([x,fliplr(x)],[y,0*ones(1,length(y))],'r')5 ?8 b6 H W! V/ I* ^4 f, T. v6 ^
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例2：修改填充色的透明度' f7 R; @5 c6 m; c7 ]. n T2 g5 _9 x9 i
x = 0:0.01:2*pi;8 }. e' k6 F% o8 a1 w5 ?% Y" [" c
y = sin(x);. k+ h3 k) @/ S, W, z3 F, N
h = fill([x,fliplr(x)],[y,0*ones(1,length(y))],'r');
! U$ u0 V. ]4 a2 y8 f& E$ p Z' `set(h,'edgealpha',0,'facealpha',0.3)# q( r( T! \* X
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# k, a1 ^9 |* O( T5 s6 @例3：三维填充色
; E7 u8 _ {( U( f: j! b3 ~& ?close all;figure
( C. x* {$ ?! ?[xx,yy] = meshgrid(1:10,1:10);
9 t/ J8 i3 c7 D0 Kfill3([xx(1, fliplr(xx(1,)],[yy(1, yy(end,],0*ones(1,2*length(yy(1,)),'r')
0 R; e& B/ D" \4 |7 _, |* egrid on;
" s6 q" `4 x) H- S# c B# Jhold on;: @) f+ b/ ]8 M/ m3 r
fill3([xx(:,1);flipud(xx(:,end))],[yy(:,1);flipud(yy(:,end))],1*ones(1,2*length(yy(:,end))),'g')
5 t D4 y2 P$ ?, f0 E( ]0 Xh = fill3([xx(:,1);flipud(xx(:,end))],[yy(:,1);flipud(yy(:,end))],-1*ones(1,2*length(yy(:,end))),'b');
4 b7 X- r( B) w3 E v4 z- eset(h,'edgealpha',0,'facealpha',0.3)$ o5 g9 ?5 ^" b9 B7 G* `/ `
zlim([-2 2])
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2. patch命令; I0 I4 k1 E' ^' V
patch命令引用格式与fill类似
& N7 _) J, F4 h: ~9 J. d; D+ |例1：
: S6 N: O1 m9 Jclose all;figure
# ?# \6 \& y/ z4 |4 y4 ^* Kx = 0:0.01:2*pi;% K- G/ m( a5 ~. y& P
y = sin(x);
4 X9 s! |, r5 V2 n) s$ H& n- Hpatch([x,fliplr(x)],[y,0*ones(1,length(y))],'r')
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例2：: }8 f5 x3 t4 Q4 N2 X
close all;figure
|& s/ s5 o3 H- g( ]x = 0:0.01:2*pi;' ^" w; V; v* \+ Y8 K1 c4 ]
y = sin(x);4 Z# ~2 q$ n4 `# ^ L& U- S
h = patch([x,fliplr(x)],[y,0*ones(1,length(y))],'r')；
6 ]. }9 W9 `# s" m" _6 d% Mset(h,'edgealpha',0,'facealpha',0.3)8 V0 L3 f7 L$ K8 D
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例3：
' h$ Z0 f; \+ {" u) ?. d3 ^三维填充/ b5 w+ t3 w: j" g& x
close all;figure& o% Y- v0 s% K# J: u+ c
[xx,yy] = meshgrid(1:10,1:10);
+ v; g4 q$ e4 m' U+ F9 x: Qpatch([xx(1, fliplr(xx(1,)],[yy(1, yy(1,],[-1*ones(1,length(yy(1,)) 1*ones(1,length(yy(1,:)))],'r')7 E4 a+ G4 L$ d- J
grid on; P; { p D, R4 k# D3 S
hold on;
9 l! x; K1 O5 \! |0 lpatch([xx(1,:) fliplr(xx(1,:))],[yy(2,:) yy(2,:)],[-1*ones(1,length(yy(1,:))) 1*ones(1,length(yy(1,:)))],'g')
0 e8 i, {8 ~7 c0 t6 ~ ~% hh = patch([xx(:,1);xx(:,1)],[yy(:,1);flipud(yy(:,end))],[-1*ones(1,length(yy(1,:)))... 1*ones(1,length(yy(1,:)))],'b');% j! c1 P: Z+ K4 r4 g- p5 b# T
set(h,'edgealpha',0,'facealpha',0.3)# f5 f) z" [1 Q+ N* R9 H
zlim([-2 2])
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