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
0 g& m, f) m7 j6 U" o1. fill命令5 K3 c. Z+ S4 z6 D2 }$ G& |/ s
fill命令填充曲线的颜色的引用格式:/ E2 U7 F& i. q" \
例1:填充sin曲线与0线之间的空间颜色为红色: }# _' _1 R9 d, ^! ]
x = 0:0.01:2*pi;
- d4 u5 \9 a( o2 Ry = sin(x);; @% l" Y$ B8 w8 v( _0 ]! j
fill([x,fliplr(x)],[y,0*ones(1,length(y))],'r')
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! A9 c, N, {( x8 Y# x( k例2:修改填充色的透明度
7 i% z! F- ^2 M6 G4 p0 dx = 0:0.01:2*pi;
/ _8 J" F4 g# e7 v! U* f- U# sy = sin(x);
7 q) L. J% i* f: U- Dh = fill([x,fliplr(x)],[y,0*ones(1,length(y))],'r');
/ A4 N% G: ^7 g; Fset(h,'edgealpha',0,'facealpha',0.3)4 W7 }# y) C5 W: g$ G+ p
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例3:三维填充色
/ X% T! |, O8 @8 V, _close all;figure
; z7 ]0 {( T6 {& U3 ^9 ][xx,yy] = meshgrid(1:10,1:10);( @9 M T' M& u# P: J" z; @4 L
fill3([xx(1, fliplr(xx(1,)],[yy(1, yy(end,],0*ones(1,2*length(yy(1,)),'r')5 _; ?& q# M0 v8 l1 Z
grid on;; i" t+ S+ n$ W/ i7 ]$ k- C7 _
hold on;
# u) R) s2 u! zfill3([xx(:,1);flipud(xx(:,end))],[yy(:,1);flipud(yy(:,end))],1*ones(1,2*length(yy(:,end))),'g')
+ O$ P' _0 |$ _/ a( a) Nh = fill3([xx(:,1);flipud(xx(:,end))],[yy(:,1);flipud(yy(:,end))],-1*ones(1,2*length(yy(:,end))),'b');5 a9 j1 e& I$ v6 ]
set(h,'edgealpha',0,'facealpha',0.3)
: r) E+ t+ ]# X* |zlim([-2 2])
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2. patch命令" `6 Y X. a$ g# D0 D8 h, O6 Q) c( O
patch命令引用格式与fill类似
. U6 n7 R' C, @8 [7 l例1:
( Z' f8 B$ m& G$ U& @close all;figure$ h3 L- _/ X) j% s& H
x = 0:0.01:2*pi;
1 P& D0 [3 Y3 H6 Yy = sin(x);; ~2 {- M! ^* e7 a* X
patch([x,fliplr(x)],[y,0*ones(1,length(y))],'r')3 W! P6 @# H* @6 ] G
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例2:
5 |0 |+ H5 z5 `. ~( l6 ?9 H7 Y9 ?& z; dclose all;figure; j; G/ d. j2 U
x = 0:0.01:2*pi;
! h+ l1 o" H( C1 D7 Y. F6 m) o Y4 Ey = sin(x); W$ |9 L, t' s$ z+ z, c, ?" I
h = patch([x,fliplr(x)],[y,0*ones(1,length(y))],'r');
3 P& J1 h* s2 M4 B" Tset(h,'edgealpha',0,'facealpha',0.3)' b. c3 Z8 l; a7 z9 H6 @- |
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: j# w/ m1 D4 I/ `例3:
' ^6 t0 b, }* U* Y三维填充
. P- E! q6 c' @9 {close all;figure1 C. I$ P T3 P& {5 @
[xx,yy] = meshgrid(1:10,1:10);/ G Q- \; q* T$ E. K
patch([xx(1, fliplr(xx(1,)],[yy(1, yy(1,],[-1*ones(1,length(yy(1,)) 1*ones(1,length(yy(1,:)))],'r')
1 e; g6 x+ s# Z# {# Mgrid on;
- N+ |7 L' x$ f/ a1 S+ Dhold on;
7 y# j, E% Z! i7 d$ cpatch([xx(1,:) fliplr(xx(1,:))],[yy(2,:) yy(2,:)],[-1*ones(1,length(yy(1,:))) 1*ones(1,length(yy(1,:)))],'g')
* }, Z5 A& \6 z. T/ B7 {h = patch([xx(:,1);xx(:,1)],[yy(:,1);flipud(yy(:,end))],[-1*ones(1,length(yy(1,:)))... 1*ones(1,length(yy(1,:)))],'b');
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4 a1 J7 u% A& ]" I4 M. B* rzlim([-2 2]). b6 d: c5 B8 ?; H8 p
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