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" l5 a# N% b0 x' d, Q8 g
1. fill命令+ }; v4 \, y# _) H1 o5 [
fill命令填充曲线的颜色的引用格式：2 \0 J6 A/ d) T1 }. |4 v
例1：填充sin曲线与0线之间的空间颜色为红色( H: y. w6 C/ g" l/ ~5 I
x = 0:0.01:2*pi;
# z+ M2 D; Y- u; t& \9 X/ ]y = sin(x);
! V5 g% b q$ z( Z* @2 ofill([x,fliplr(x)],[y,0*ones(1,length(y))],'r')
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: l- ]; ]$ U6 g2 m0 p' H例2：修改填充色的透明度5 Z7 ?; O, ~: U. h, U! A
x = 0:0.01:2*pi;( K9 ~( B( w1 v0 M$ Z
y = sin(x);; ^9 u7 u9 A' I
h = fill([x,fliplr(x)],[y,0*ones(1,length(y))],'r');$ S1 V; M1 e: I5 c% I
set(h,'edgealpha',0,'facealpha',0.3)
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close all;figure
" S2 V% k+ f/ j3 C7 r8 Z[xx,yy] = meshgrid(1:10,1:10);
2 _$ v6 U( F- U8 {5 i' C Z3 ~fill3([xx(1, fliplr(xx(1,)],[yy(1, yy(end,],0*ones(1,2*length(yy(1,)),'r')
V2 ~% S. k U; `+ bgrid on;9 K( [, |% r" |8 G: N/ @7 {' A
hold on;: F- L5 F+ c9 ^6 r5 ]" y
fill3([xx(:,1);flipud(xx(:,end))],[yy(:,1);flipud(yy(:,end))],1*ones(1,2*length(yy(:,end))),'g')
9 Y7 Q8 I8 K) E; p8 ~. Uh = fill3([xx(:,1);flipud(xx(:,end))],[yy(:,1);flipud(yy(:,end))],-1*ones(1,2*length(yy(:,end))),'b');: Z8 `# ~8 W% V2 y
set(h,'edgealpha',0,'facealpha',0.3)1 t+ _* g" b1 W, d
zlim([-2 2])
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* R0 h, {# I8 E0 \2. patch命令
I2 e. c# \' k3 spatch命令引用格式与fill类似* L7 W: W! c$ }- T, R @
例1：
) X% S2 W6 E2 ]7 E7 T/ Xclose all;figure# ?" B$ h) Q. B
x = 0:0.01:2*pi;& W) l" n5 L! U9 V7 J* q
y = sin(x);: h3 s {" p5 d, v/ R4 `
patch([x,fliplr(x)],[y,0*ones(1,length(y))],'r')8 M' p: ?6 H" [
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例2：
' r) V2 ], O8 sclose all;figure
0 N; e9 L: u1 U: { E1 F. G2 ?x = 0:0.01:2*pi;# Y4 V$ o: I# R6 F
y = sin(x);' d, ~% |* D# Z7 l
h = patch([x,fliplr(x)],[y,0*ones(1,length(y))],'r')； b3 G. u$ `7 G, j5 }
set(h,'edgealpha',0,'facealpha',0.3)
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例3： \3 K( t5 i' m6 h/ e) ^1 \
三维填充" P- R7 r, I% D0 h# t) u
close all;figure
0 A/ {' @! J2 N) A( d5 [& G[xx,yy] = meshgrid(1:10,1:10);+ z3 t) n4 w- j+ Y
patch([xx(1, fliplr(xx(1,)],[yy(1, yy(1,],[-1*ones(1,length(yy(1,)) 1*ones(1,length(yy(1,:)))],'r')
) O }5 k1 v* v3 ?: S* Ogrid on;8 i7 c m7 O2 F4 w8 N% G
hold on;
3 e9 u2 ^! s& a9 W4 Ipatch([xx(1,:) fliplr(xx(1,:))],[yy(2,:) yy(2,:)],[-1*ones(1,length(yy(1,:))) 1*ones(1,length(yy(1,:)))],'g')8 a; S- W( I) b: w2 A
h = patch([xx(:,1);xx(:,1)],[yy(:,1);flipud(yy(:,end))],[-1*ones(1,length(yy(1,:)))... 1*ones(1,length(yy(1,:)))],'b');
6 x9 R4 F" p+ u8 Lset(h,'edgealpha',0,'facealpha',0.3)
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