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; Q4 m6 R, y( `0 F6 ~
1. fill命令: D& E( H3 T3 ?! ?/ Q
fill命令填充曲线的颜色的引用格式：
2 j2 y. {2 I3 i G; z( | m例1：填充sin曲线与0线之间的空间颜色为红色
$ w: @) _( _& W, ^! A. E) q7 \x = 0:0.01:2*pi;
+ L1 T8 m( u6 y; O/ vy = sin(x);3 Y- k" U2 W% P/ T" A6 ]% y
fill([x,fliplr(x)],[y,0*ones(1,length(y))],'r')
* Q: v) O7 J3 [7 }
% D4 r. }8 K+ `/ V. ^4 `2 N" Q
* D% t& I6 p( i1 h. s6 u
+ v: {% d2 N! q1 Z* W' Z* D
! U2 }; @, v/ b8 y, `例2：修改填充色的透明度
6 c: o) A7 \: j Jx = 0:0.01:2*pi;
4 ]8 i$ S, k% L. L% P+ w# Uy = sin(x);
7 [* M1 O f: M0 [/ m2 W- N) Kh = fill([x,fliplr(x)],[y,0*ones(1,length(y))],'r');
: g7 x& P& {& g! `# c, Mset(h,'edgealpha',0,'facealpha',0.3)
" g6 L9 ~$ q7 b- B! i5 [" Z' Y1 Y1 ~& j, s9 q
' E+ q: R, N& e7 {2 M
* T* n# e& S3 b6 ]/ |
6 e& M. j8 p {例3：三维填充色
7 m, C( A1 W4 [5 a1 }7 y0 L' Hclose all;figure. ]3 K1 R( b8 e& b& [* o0 R
[xx,yy] = meshgrid(1:10,1:10);
7 t7 Y. X: F3 u! b$ c. S! a0 Dfill3([xx(1, fliplr(xx(1,)],[yy(1, yy(end,],0*ones(1,2*length(yy(1,)),'r')
0 L8 j. u5 R% }4 K/ u; ?5 D* f' |grid on;
6 g7 `$ T6 g: j9 H4 Q. fhold on;, Y+ H: m! C2 g
fill3([xx(:,1);flipud(xx(:,end))],[yy(:,1);flipud(yy(:,end))],1*ones(1,2*length(yy(:,end))),'g')+ q& f! {4 Y9 k: ?9 t
h = fill3([xx(:,1);flipud(xx(:,end))],[yy(:,1);flipud(yy(:,end))],-1*ones(1,2*length(yy(:,end))),'b');$ x$ ~& J* ^# }: p9 W
set(h,'edgealpha',0,'facealpha',0.3)
- a: l. l) M- X k7 kzlim([-2 2])
) S/ `" k! |; b- T& l: C6 l# G
! L1 ^# X* h, |& e0 V3 z2 e8 p, D4 p/ ^" X; }# `
5 t" b+ d/ e: Z4 O5 _
6 L% d0 Q+ m$ _
2. patch命令
* _7 O+ i4 U8 F$ K2 s+ A, w4 x- ~patch命令引用格式与fill类似
& L1 {, d5 f2 d) ?例1：
: w4 D: O6 u$ F; e# d' y3 X4 |close all;figure
( ]# e( k. I; s$ ?- c( F; N4 Jx = 0:0.01:2*pi;
; I) P$ y' ]1 u6 p- ^/ h6 R2 Iy = sin(x);
$ T& `8 E. V7 B1 g5 B8 `0 S* Z) L5 mpatch([x,fliplr(x)],[y,0*ones(1,length(y))],'r')" V# x: p6 p) D
9 g w" P8 T5 |" y
2 _& ]3 h& Y" {% f( G- P1 @: S例2：
7 `) C# Z/ u* c. I$ ^$ ?close all;figure3 C( C2 |+ B" M5 b; n7 V9 @/ O
x = 0:0.01:2*pi;
1 C1 o, b* M. G& Oy = sin(x);
* Y* k, E* R$ n+ Y9 }2 U, ph = patch([x,fliplr(x)],[y,0*ones(1,length(y))],'r')；
" u: g2 D* y6 w$ c/ _$ B( J9 Iset(h,'edgealpha',0,'facealpha',0.3)
0 `3 r; \0 o g+ p5 G; j) Z& T( X! b& s3 ^$ Y5 o$ {( ~
" H5 i; o9 f. p6 e9 I$ e/ N0 t
例3：
1 W; m% Z4 x) v; R% [" n三维填充8 w! X6 e( { c" \
close all;figure- {: s. b1 [- ~; W! T4 L1 N2 ~) W/ L
[xx,yy] = meshgrid(1:10,1:10);- b3 c& t$ }, Z2 q9 ]
patch([xx(1, fliplr(xx(1,)],[yy(1, yy(1,],[-1*ones(1,length(yy(1,)) 1*ones(1,length(yy(1,:)))],'r')
) L4 C( t: U9 G! X* a& \7 \$ jgrid on;
, F; F) u7 G0 f! ehold on;
& q6 v% `3 B3 M5 a: z: spatch([xx(1,:) fliplr(xx(1,:))],[yy(2,:) yy(2,:)],[-1*ones(1,length(yy(1,:))) 1*ones(1,length(yy(1,:)))],'g')
" c. L' D, M ~3 u; b1 ^0 uh = patch([xx(:,1);xx(:,1)],[yy(:,1);flipud(yy(:,end))],[-1*ones(1,length(yy(1,:)))... 1*ones(1,length(yy(1,:)))],'b');
. L/ G( p; ~! O, u0 k Nset(h,'edgealpha',0,'facealpha',0.3)
5 u. g9 b+ Q6 Q0 A# P6 Nzlim([-2 2])
( G+ I& T% o4 {. ]/ x
! s& v7 ~. i( ]! `; {
% U( I8 e2 I+ L' [% M- ?
, H2 d# }) j! A- W0 P% `# @0 W5 v7 t+ V, b4 J$ N
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。 |
0 H6 k {, }0 t2 s: T1 t3 o
