Matlab绘图中legend的终极用法

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基本用法：

legend({'str1','str2','strn'});

高级用法1：指定legend显示的位置：

legend({'str1','str2','strn'},1);

legend({'str1','str2','strn'},2);

legend({'str1','str2','strn'},'Location','SouthEast');

可选的位置很多：

North：Inside plot box near top
0 y0 B( a0 s, hSouth：Inside bottom
; z+ f, M. }) L  Z; ^EastI：nside right
  r/ S1 T% b* }0 [West：Inside left
NorthEast：Inside top right (default)
NorthWest：Inside top left
SouthEast：Inside bottom right
: B) K+ S* H$ `8 \4 ]$ o7 V; }' }% _7 [SouthWest：Inside bottom left
0 Z* L4 r1 M2 l+ `) N; |NorthOutside：Outside plot box near top
# R1 V3 O5 h6 ASouthOutside：Outside bottom
9 f0 h& P$ ^" c  |$ \- |8 X2 T( |EastOutside：Outsideright
7 d  k& ^- w( V1 d: l8 m5 oWestOutside：Outside left
) k/ A' d, K4 z+ h: e7 sNorthEastOutside：Outside top right
NorthWestOutside：Outside top left
4 U% I! h: j( W- h& N* FSouthEastOutside：Outside bottom right
SouthWestOutside：Outside bottom left
5 L" u) N; D' t6 E* A1 ^Best：Least conflict with data in plot
BestOutside：Least unused space outside plot

通常，用'Best‘比较不错

高级用法2：指定显示某几条曲线的legend：

方法1：复杂到吐血

例如你有25条曲线，想显示其中1，6，11，16，21的legend，则

for i = [2:5 7:10 12:15 17:20 22:25]
set(get(get(H(i),'Annotation'),'LegendInformation'),'IconDisplayStyle','off');
. t+ _$ ]3 {4 E0 x8 j2 C7 ?end
legend('1','6','11','16','21');

方法2：简单到郁闷

H = plot(data);
5 t- E, C+ Q( i5 U3 m: f# ]0 J" Elegend(H([1 6 11 16 21],'1,'6','11’,'16','21');

高级用法3：legend横排

hl = legend(H([1 6 11 16 21],'1,'6','11’,'16','21');
3 X5 i6 E3 ~+ C3 A% r3 yset(hl,'Orientation','horizon')

高级用法4：不显示方框：

hl = legend(H([1 6 11 16 21],'1,'6','11’,'16','21');
set(hl,'Box','off');

: Y8 V  R1 i2 d0 A2 Y1 [
4 {: g* U# X$ m+ m

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Matlab绘图中legend的终极用法