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 S ]& u& D1 w4 W% i5 W1. fill命令
5 U9 R! B" o( p( O a8 @2 k# V' @fill命令填充曲线的颜色的引用格式：
, h8 \% ^- }- h7 [6 H7 G例1：填充sin曲线与0线之间的空间颜色为红色
) T% c5 }( N/ o9 W( |5 ~x = 0:0.01:2*pi;
* I7 q" V. D" ay = sin(x);" N; z, e! F) C
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
: z7 r* D5 f1 {" qx = 0:0.01:2*pi;4 E. V6 e/ k; q; C4 M" ]8 K
y = sin(x);
$ ~2 s* T' d% ^( j1 P5 @6 E1 @h = fill([x,fliplr(x)],[y,0*ones(1,length(y))],'r');
( w/ a$ j9 C! q8 L) R5 q. z% Z3 e9 y' ~set(h,'edgealpha',0,'facealpha',0.3)
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例3：三维填充色, w. Z" {4 U3 P% N- X5 I* f. b
close all;figure7 X* _# E! O' I& H, a* ]9 w
[xx,yy] = meshgrid(1:10,1:10);
3 [9 V7 \# `' q ffill3([xx(1, fliplr(xx(1,)],[yy(1, yy(end,],0*ones(1,2*length(yy(1,)),'r')
& W/ W2 n4 c/ v! s7 H1 _grid on;
]6 l% H# F) F( _; B9 t2 Hhold on;
' F% P9 G" ~( z: z. S2 L: ]! F1 ^8 Efill3([xx(:,1);flipud(xx(:,end))],[yy(:,1);flipud(yy(:,end))],1*ones(1,2*length(yy(:,end))),'g'), \# N1 p5 t9 X: N
h = fill3([xx(:,1);flipud(xx(:,end))],[yy(:,1);flipud(yy(:,end))],-1*ones(1,2*length(yy(:,end))),'b');. t% `1 j1 a. ~! p1 \
set(h,'edgealpha',0,'facealpha',0.3)
1 ]( h! L6 M6 X/ q( O' Mzlim([-2 2])
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2. patch命令
, H, N: R2 {, h) Xpatch命令引用格式与fill类似
, c, I' [! n% n' x* z# p. l# Q例1：
( i; q5 e5 i- d3 Z/ X9 Q' g7 Cclose all;figure9 ^- N3 T r# \, b
x = 0:0.01:2*pi;$ q$ e2 c: o6 y( {) v
y = sin(x);
/ C4 V3 U4 Z/ i$ e; ?patch([x,fliplr(x)],[y,0*ones(1,length(y))],'r')
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9 l# j7 T4 p7 i/ O0 |4 ]$ e例2：
. D+ U* J4 w5 N. |close all;figure& O# o( u' K M6 j0 N! n2 P
x = 0:0.01:2*pi;- {* J; ?$ ?. u$ A
y = sin(x);# D: p3 _6 b8 I- Z5 [, j
h = patch([x,fliplr(x)],[y,0*ones(1,length(y))],'r')；
" |5 ~# T* h6 {2 m" `set(h,'edgealpha',0,'facealpha',0.3)4 @+ W' d- V! W2 m' Q" Z
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6 E4 k# @7 ^' a. B& N例3：+ m7 q. @* J% [( C; F: H# m
三维填充
& ^9 x" Y8 T1 uclose all;figure
$ ]& C6 o6 q7 r[xx,yy] = meshgrid(1:10,1:10);3 t# s+ [* h5 b: R; N
patch([xx(1, fliplr(xx(1,)],[yy(1, yy(1,],[-1*ones(1,length(yy(1,)) 1*ones(1,length(yy(1,:)))],'r')& r; J. N) C0 o' ?' _
grid on;
( @( ?' s% _, a e! }; M( G7 z& bhold on;
* ~* q- R7 y. T# Y6 [* o4 }1 tpatch([xx(1,:) fliplr(xx(1,:))],[yy(2,:) yy(2,:)],[-1*ones(1,length(yy(1,:))) 1*ones(1,length(yy(1,:)))],'g')
" K- [* M; C4 K/ S" _h = patch([xx(:,1);xx(:,1)],[yy(:,1);flipud(yy(:,end))],[-1*ones(1,length(yy(1,:)))... 1*ones(1,length(yy(1,:)))],'b');
' B7 M; A4 r6 W. sset(h,'edgealpha',0,'facealpha',0.3) ?( X! J8 D2 X4 D' {3 ~# b5 V
zlim([-2 2])
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3 {6 O, d7 O% I$ z2 K% C( r* u: P 转载本文请联系原作者获取授权，同时请注明本文来自叶瑞杰科学网博客。 |
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