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
- A5 F) h! }2 B# g% W# R( b1. fill命令7 m% T7 P, ~+ F! S0 n
fill命令填充曲线的颜色的引用格式： w, b6 X0 [. a8 W0 r$ F0 R6 F
例1：填充sin曲线与0线之间的空间颜色为红色
" E4 {7 d h$ B- |; F0 j! V6 Qx = 0:0.01:2*pi;* C' l8 m2 W/ L
y = sin(x);
$ I) s6 a$ ~, |, n4 T6 `, Ffill([x,fliplr(x)],[y,0*ones(1,length(y))],'r')
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: h, V" j8 W" R& o, w例2：修改填充色的透明度+ l- a4 N V0 V) b$ @; G1 V" O
x = 0:0.01:2*pi;
; @ R# Y* _* _; W8 @" [- R: @y = sin(x);' Z) X$ E/ p3 }* U3 ]1 c- G1 M7 @
h = fill([x,fliplr(x)],[y,0*ones(1,length(y))],'r');* P/ y s. _/ f) R
set(h,'edgealpha',0,'facealpha',0.3)
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+ d ?, Y: q) d/ M" {6 c! Yclose all;figure" ?& S) w4 N- l$ C8 q0 o6 a- |, ?
[xx,yy] = meshgrid(1:10,1:10);
) U( y# D* n7 q4 V+ _fill3([xx(1, fliplr(xx(1,)],[yy(1, yy(end,],0*ones(1,2*length(yy(1,)),'r')
. o# u7 i" X4 y+ v5 a/ R0 ugrid on;0 a5 M$ Q( b/ e! C9 |" n
hold on;' @$ ^( d4 R% |- z
fill3([xx(:,1);flipud(xx(:,end))],[yy(:,1);flipud(yy(:,end))],1*ones(1,2*length(yy(:,end))),'g')
( v2 q4 L3 b/ K1 o7 Vh = fill3([xx(:,1);flipud(xx(:,end))],[yy(:,1);flipud(yy(:,end))],-1*ones(1,2*length(yy(:,end))),'b');
, m% {& ?0 t/ s7 C( Gset(h,'edgealpha',0,'facealpha',0.3)
3 v- m9 S, B# S0 B/ d# Qzlim([-2 2])9 J9 q$ b- r. _! a9 \+ ]* \3 [
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2 `3 @4 T- R4 [2. patch命令5 F; V5 N/ j6 _8 e
patch命令引用格式与fill类似
, z/ Y& T4 `3 O6 z% m, a9 k例1：1 C2 |9 W# P/ v m/ ~8 f0 y
close all;figure- n/ b' R1 j+ [5 u: k! n
x = 0:0.01:2*pi; B! U( {0 L6 ]
y = sin(x);9 {1 p+ D2 ?9 w: i
patch([x,fliplr(x)],[y,0*ones(1,length(y))],'r')
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. u6 J$ z, _ v6 x例2：
/ N$ u, I+ B4 x* Oclose all;figure1 \/ A5 G4 S4 y
x = 0:0.01:2*pi;. W2 O7 c: n& [& r8 J1 F5 f, p
y = sin(x);( \; ]3 R) H' L
h = patch([x,fliplr(x)],[y,0*ones(1,length(y))],'r')；6 n. g, \6 i( A7 T/ j5 z
set(h,'edgealpha',0,'facealpha',0.3)
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例3：# a$ F% g4 `; |1 s) ~& W5 h# D0 n+ E
三维填充
' _5 y) ~' j# v& @/ R6 ]7 C# dclose all;figure
3 G$ O" Q( e% }' h: j[xx,yy] = meshgrid(1:10,1:10);
* f0 f' F" r( o+ D* Fpatch([xx(1, fliplr(xx(1,)],[yy(1, yy(1,],[-1*ones(1,length(yy(1,)) 1*ones(1,length(yy(1,:)))],'r')
' _. W" Q% I3 H, y. G5 H. C- lgrid on;2 R. j* Z# }9 `$ I" I
hold on;2 y( |; n; X2 b9 K4 q
patch([xx(1,:) fliplr(xx(1,:))],[yy(2,:) yy(2,:)],[-1*ones(1,length(yy(1,:))) 1*ones(1,length(yy(1,:)))],'g')
+ v' v% R( Y$ a: B( v: hh = patch([xx(:,1);xx(:,1)],[yy(:,1);flipud(yy(:,end))],[-1*ones(1,length(yy(1,:)))... 1*ones(1,length(yy(1,:)))],'b');1 M, H5 g) T! l3 E( l
set(h,'edgealpha',0,'facealpha',0.3)! }+ e. W5 v+ Q0 `9 W4 E, g
zlim([-2 2])
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1 i/ W$ X$ H8 f: K: x. r2 W 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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