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4 j1 _8 T- b- |$ x6 k3 P( X6 H
1. fill命令" Q' A7 T4 x1 a, ~7 p
fill命令填充曲线的颜色的引用格式：* ^2 R- Q) c: B+ I" L9 D+ Q P. I
例1：填充sin曲线与0线之间的空间颜色为红色* y6 @, E! H' b0 i1 h1 e% }
x = 0:0.01:2*pi;# I- _, Y9 e# P1 {
y = sin(x);2 V7 o/ C) y+ s
fill([x,fliplr(x)],[y,0*ones(1,length(y))],'r')& H% E; [" _" d' \6 V/ w: ~8 {
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9 ]2 v9 l$ j7 ]例2：修改填充色的透明度: ^: Q8 M4 ~9 N& c. m0 a& C
x = 0:0.01:2*pi;" l n3 t1 v" J6 A
y = sin(x);
5 N- G. h+ o; \h = fill([x,fliplr(x)],[y,0*ones(1,length(y))],'r');! f9 v% Y0 T" G: x/ X! R: z3 ?
set(h,'edgealpha',0,'facealpha',0.3)' o5 t$ i4 o! q$ W
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6 H) F2 A& u: T( G# o! x1 q/ \0 g) t例3：三维填充色* N+ F! x r: ?5 v3 x& N
close all;figure1 e4 s& g B5 h! H3 I6 z* @; ` n
[xx,yy] = meshgrid(1:10,1:10);* H3 A* y% N( Z9 \# ^
fill3([xx(1, fliplr(xx(1,)],[yy(1, yy(end,],0*ones(1,2*length(yy(1,)),'r'). ^% r7 ?/ n$ q7 J* V2 l# j( u
grid on;
6 }) e- R ~: |: F& Q. f( w- a/ Hhold on;) |( W w% Y! s; r5 z
fill3([xx(:,1);flipud(xx(:,end))],[yy(:,1);flipud(yy(:,end))],1*ones(1,2*length(yy(:,end))),'g'), u8 E# I9 L& E2 @5 l
h = fill3([xx(:,1);flipud(xx(:,end))],[yy(:,1);flipud(yy(:,end))],-1*ones(1,2*length(yy(:,end))),'b');
- W% [4 V, y" U% I$ \6 nset(h,'edgealpha',0,'facealpha',0.3)
3 E, x4 C. F! ~. I2 O+ Nzlim([-2 2])
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: H. E i/ P/ Y2. patch命令 E$ V6 s# ]* P2 `& l4 W8 X3 p
patch命令引用格式与fill类似) v! J& H) _8 Q! f, F9 k
例1：
; ^ \. _: l& n# z% Oclose all;figure3 V7 `; g; H$ n6 Y
x = 0:0.01:2*pi;8 t9 ?8 K% E [9 }" s
y = sin(x);
2 O6 Y3 X$ {% Cpatch([x,fliplr(x)],[y,0*ones(1,length(y))],'r')
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2 [) }7 U7 l+ z* w$ u, \# d4 D# x例2：. e! x9 a- f# P% X
close all;figure, l0 c5 o: ^7 A& S2 x& B- ~
x = 0:0.01:2*pi;
2 ^' w+ \$ c# B8 _# ry = sin(x);0 c8 \$ G& y1 q) S2 X3 m" l
h = patch([x,fliplr(x)],[y,0*ones(1,length(y))],'r')；
: w2 o9 C3 ?" Oset(h,'edgealpha',0,'facealpha',0.3)
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& ?, B( K1 u3 r$ ~# E例3：
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: _ z0 J* E: C' N2 p( x" Oclose all;figure( T4 x5 k" t- A! O, \/ j! {, Y
[xx,yy] = meshgrid(1:10,1:10);
1 |8 Y- m" d$ v) d1 S% Tpatch([xx(1, fliplr(xx(1,)],[yy(1, yy(1,],[-1*ones(1,length(yy(1,)) 1*ones(1,length(yy(1,:)))],'r')
+ e/ v% n H egrid on;, u# h8 @, p* {) w
hold on;' R7 z ?. y; C4 H2 V# M
patch([xx(1,:) fliplr(xx(1,:))],[yy(2,:) yy(2,:)],[-1*ones(1,length(yy(1,:))) 1*ones(1,length(yy(1,:)))],'g')' N. l! t; \# }3 d/ ?# B
h = patch([xx(:,1);xx(:,1)],[yy(:,1);flipud(yy(:,end))],[-1*ones(1,length(yy(1,:)))... 1*ones(1,length(yy(1,:)))],'b');( U) K5 K2 Z( h; J
set(h,'edgealpha',0,'facealpha',0.3)
" v( \0 Q H) f# h5 \$ uzlim([-2 2])
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