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' k J1 c( c) Y, n
1. fill命令- v8 S+ z8 A4 i% ]0 p: O2 E
fill命令填充曲线的颜色的引用格式：
: c0 H: d; v) M例1：填充sin曲线与0线之间的空间颜色为红色2 A# C; o5 m2 |* o3 d" f
x = 0:0.01:2*pi;! \5 w7 c, P, K+ r2 y) d* Z, ^
y = sin(x);) r3 B" X' W' _( }* j
fill([x,fliplr(x)],[y,0*ones(1,length(y))],'r'); v8 v4 d& i' o
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例2：修改填充色的透明度) W6 z8 c1 q; s% j7 G% d
x = 0:0.01:2*pi;
' ]% }* v6 v# K+ y: ~; Sy = sin(x);
$ l: Q" u. q0 E5 Hh = fill([x,fliplr(x)],[y,0*ones(1,length(y))],'r');9 U& G5 S7 f8 R C6 S
set(h,'edgealpha',0,'facealpha',0.3)
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2 X7 h1 h- g6 ^例3：三维填充色9 b3 D" ^3 p0 W3 h4 |
close all;figure0 `4 G8 \) b& @: c" b+ c
[xx,yy] = meshgrid(1:10,1:10);# m; ?; @& i1 j% H3 [
fill3([xx(1, fliplr(xx(1,)],[yy(1, yy(end,],0*ones(1,2*length(yy(1,)),'r')
' m6 \. P5 B8 |% G: |6 C9 zgrid on;( E4 l3 b/ L) l
hold on;6 G9 n. g7 Q* t( t+ _% ~
fill3([xx(:,1);flipud(xx(:,end))],[yy(:,1);flipud(yy(:,end))],1*ones(1,2*length(yy(:,end))),'g')1 m8 Z5 a7 ]9 c5 |, h/ q
h = fill3([xx(:,1);flipud(xx(:,end))],[yy(:,1);flipud(yy(:,end))],-1*ones(1,2*length(yy(:,end))),'b');/ I) y8 t) m. s5 t% Z' @7 e: A; Q
set(h,'edgealpha',0,'facealpha',0.3)5 d/ I; ?% c& }# n
zlim([-2 2])$ T3 i' m5 e/ _! X" q8 X* x
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3 e) [& M, H4 ?! O4 C2. patch命令
& ?9 C* \7 Y" l7 U; S$ @6 m) \patch命令引用格式与fill类似$ y+ d% ?0 @2 m- a9 A! Q
例1：4 \& x8 N# ?- l# O" a1 n7 p, F
close all;figure
9 N m( ?1 c( k8 P) ~/ {) ^x = 0:0.01:2*pi;
% q$ Y/ @$ `0 fy = sin(x);
. n; B+ P: R6 U9 \9 ] Xpatch([x,fliplr(x)],[y,0*ones(1,length(y))],'r')
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6 t' L9 `. ?; S, x8 N# z( U例2：' s' ` w1 {0 L$ K3 J
close all;figure
* E! h8 K0 B# b) lx = 0:0.01:2*pi;$ Y& l l. T' P% L9 w1 M& B* D
y = sin(x);9 N& G6 j x- @2 x+ c) z; G0 e9 W
h = patch([x,fliplr(x)],[y,0*ones(1,length(y))],'r')；* P2 B+ X. Z" j V/ [) w+ o
set(h,'edgealpha',0,'facealpha',0.3)4 t+ p/ z$ w; h5 Y) g" j2 U. G
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例3：
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close all;figure# d( p8 L% s" H3 T e3 g4 {
[xx,yy] = meshgrid(1:10,1:10);) C& E$ P5 \: ?, i" o8 t( ?' x
patch([xx(1, fliplr(xx(1,)],[yy(1, yy(1,],[-1*ones(1,length(yy(1,)) 1*ones(1,length(yy(1,:)))],'r'), ?/ _5 |4 q: b: _
grid on;' @$ o- Y( Z7 |! H* P V
hold on;- {% |0 U% \( i3 O* B8 x3 C
patch([xx(1,:) fliplr(xx(1,:))],[yy(2,:) yy(2,:)],[-1*ones(1,length(yy(1,:))) 1*ones(1,length(yy(1,:)))],'g')5 z% w# D' U' y: i/ t
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 [/ s4 P7 F! y, {/ K% L% Qset(h,'edgealpha',0,'facealpha',0.3)" |9 t; @/ ]- H( Y+ I8 Q
zlim([-2 2])4 c' U u0 K0 } J$ W% K4 \
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