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
5 O, N1 r! R. P  w8 h* eSouth：Inside bottom
# r- v7 x0 m- H+ i; fEastI：nside right
8 s4 E7 ~/ {9 H" c4 u( g' h/ DWest：Inside left
NorthEast：Inside top right (default)
& o+ N' u6 j% O: m# PNorthWest：Inside top left
SouthEast：Inside bottom right
( n4 d+ V7 n, y& l/ VSouthWest：Inside bottom left
NorthOutside：Outside plot box near top
SouthOutside：Outside bottom
7 n( g+ h" h% W7 f+ k. U* t2 bEastOutside：Outsideright
WestOutside：Outside left
. m5 `" r/ F; x' ?) |NorthEastOutside：Outside top right
1 ~) ~! p/ W; y; ?6 L1 _5 ENorthWestOutside：Outside top left
SouthEastOutside：Outside bottom right
5 o7 U: {* Y1 N/ W. MSouthWestOutside：Outside bottom left
Best：Least conflict with data in plot
# q8 _% [& t" @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]
& ^! f/ `9 h- ~! Qset(get(get(H(i),'Annotation'),'LegendInformation'),'IconDisplayStyle','off');
$ G9 g  |/ j# ?1 _* C9 Mend
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');
& u6 [3 ], Z  z1 O# m  Qset(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');
8 V  B- H+ Y0 H+ {1 @0 Hset(hl,'Box','off');

' ^6 y* l: W; `+ n  t% T  L

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Matlab绘图中legend的终极用法