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
South：Inside bottom
EastI：nside right
1 M$ ~, p# @9 y: w- B; eWest：Inside left
7 k% ]2 o" i* G2 bNorthEast：Inside top right (default)
NorthWest：Inside top left
SouthEast：Inside bottom right
SouthWest：Inside bottom left
; B( `" q. A: F/ Q5 J6 ?NorthOutside：Outside plot box near top
- v0 K( j. f- P. aSouthOutside：Outside bottom
EastOutside：Outsideright
WestOutside：Outside left
NorthEastOutside：Outside top right
NorthWestOutside：Outside top left
SouthEastOutside：Outside bottom right
SouthWestOutside：Outside bottom left
/ A, n+ W+ h$ D) K8 e$ }1 BBest：Least conflict with data in plot
4 r4 |$ U! v% F, |: qBestOutside：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]
) x5 k7 G) `7 W0 k; Iset(get(get(H(i),'Annotation'),'LegendInformation'),'IconDisplayStyle','off');
end
2 i3 ~/ A# J8 h+ h# F& ]legend('1','6','11','16','21');

方法2：简单到郁闷

H = plot(data);
legend(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');
set(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');

/ g  g; L2 p& P% `% y

6 B6 m, L5 r; o0 F

yin123

Matlab绘图中legend的终极用法