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 q9 Y3 z9 E1 v8 _$ n9 D. p7 _' W7 Z
1. fill命令, {* a9 O: v% D6 ]$ c
fill命令填充曲线的颜色的引用格式:9 k0 V4 A( V1 V" w
例1:填充sin曲线与0线之间的空间颜色为红色
" s3 n% u( y0 m2 f2 ]) x7 a; Sx = 0:0.01:2*pi;1 d% X9 U8 I) N& \4 L
y = sin(x); R# k! ~0 M; p
fill([x,fliplr(x)],[y,0*ones(1,length(y))],'r')$ U* i" S$ O2 x( k- I
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例2:修改填充色的透明度" m6 b8 m. Y( C/ ^: ^8 p( }
x = 0:0.01:2*pi;
# a# `" l. T) m6 Ly = sin(x);
5 E) m& o$ Y* `# |4 |# Gh = fill([x,fliplr(x)],[y,0*ones(1,length(y))],'r');1 N9 u! l/ Q; z- }
set(h,'edgealpha',0,'facealpha',0.3)6 z6 g' M b8 ^; N8 k
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3 X; h+ B1 ~" B: Y8 @8 F& t例3:三维填充色
- w# [4 x2 [6 [3 }' ~- Q7 |1 O3 jclose all;figure
6 `1 G( } c. o; Q( Q[xx,yy] = meshgrid(1:10,1:10);
5 o. _3 R& g. u4 x2 R. Tfill3([xx(1, fliplr(xx(1,)],[yy(1, yy(end,],0*ones(1,2*length(yy(1,)),'r')# b5 s. I7 T+ l+ \
grid on;
& w1 a+ t# M" ~/ o% ihold on;
' X9 c% g' X$ Z/ }- o& ofill3([xx(:,1);flipud(xx(:,end))],[yy(:,1);flipud(yy(:,end))],1*ones(1,2*length(yy(:,end))),'g')4 m8 ?% _+ D1 M5 A% N
h = fill3([xx(:,1);flipud(xx(:,end))],[yy(:,1);flipud(yy(:,end))],-1*ones(1,2*length(yy(:,end))),'b');+ `0 Q0 C2 D& c; G2 r* Q X, x: N
set(h,'edgealpha',0,'facealpha',0.3)
, G5 D5 S4 j! A7 e6 F# l% Fzlim([-2 2])
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3 l }# w. K: \6 J" g+ Y: H3 u. k2. patch命令+ X( U: d0 {9 O$ Q( ^% P
patch命令引用格式与fill类似
# P. t& I& W( ^& x1 l5 a" u8 b6 ]例1:
' E1 v' w1 n# E& N1 Qclose all;figure
7 |4 N- H. e. b- z" z4 n2 |x = 0:0.01:2*pi;
7 I( G7 v6 `4 X; e: E/ Zy = sin(x);
' ~$ ]4 a0 I9 n v) bpatch([x,fliplr(x)],[y,0*ones(1,length(y))],'r')) k. |9 R2 U7 o# l# v6 u' M* D6 e ?
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例2:7 c$ V# m7 t' O: a% }/ R
close all;figure
% [, T( B4 d! |x = 0:0.01:2*pi;
0 |8 \/ l2 ]& L0 h: f8 xy = sin(x);
6 }. `+ Q) z7 P* m8 }, p2 h7 z# ah = patch([x,fliplr(x)],[y,0*ones(1,length(y))],'r');( `% ?7 }8 r% |. C0 B" X/ A
set(h,'edgealpha',0,'facealpha',0.3)7 W I8 k0 V2 I
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* N# P/ O# f( |例3:
5 y) w8 R7 _. N三维填充6 A" j* r5 _5 f) F! b0 x( }. I
close all;figure
( h2 S4 [/ H& S3 Z[xx,yy] = meshgrid(1:10,1:10);
, R9 o: r. O6 `$ dpatch([xx(1, fliplr(xx(1,)],[yy(1, yy(1,],[-1*ones(1,length(yy(1,)) 1*ones(1,length(yy(1,:)))],'r')( b+ ]- H! c( |" r4 Z7 _8 I
grid on;; F$ K; X& x" ~& t, n- h& N
hold on;
# O6 } ]: l+ r5 Vpatch([xx(1,:) fliplr(xx(1,:))],[yy(2,:) yy(2,:)],[-1*ones(1,length(yy(1,:))) 1*ones(1,length(yy(1,:)))],'g')
" P5 Q7 L; A7 ^8 R9 H' g, Ah = patch([xx(:,1);xx(:,1)],[yy(:,1);flipud(yy(:,end))],[-1*ones(1,length(yy(1,:)))... 1*ones(1,length(yy(1,:)))],'b');" D: L& G6 C5 \- ]( \8 ?1 N2 V
set(h,'edgealpha',0,'facealpha',0.3)8 h$ d( y' t7 ~- C3 J) @4 m }
zlim([-2 2])
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