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
$ w! P2 Q/ ~  c& xEastI：nside right
0 u8 Z# o6 F0 G4 ^1 v3 }West：Inside left
8 f0 J# g- I- l8 W# lNorthEast：Inside top right (default)
NorthWest：Inside top left
2 P, U- K( F! LSouthEast：Inside bottom right
SouthWest：Inside bottom left
6 Q/ }2 y* S, `% P' z7 v" FNorthOutside：Outside plot box near top
SouthOutside：Outside bottom
: l, N9 q/ d8 b* o6 q! @EastOutside：Outsideright
WestOutside：Outside left
NorthEastOutside：Outside top right
NorthWestOutside：Outside top left
: v: u6 i- j0 @SouthEastOutside：Outside bottom right
SouthWestOutside：Outside bottom left
Best：Least conflict with data in plot
0 D6 Z! y+ ~6 Q6 d) `* FBestOutside：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]
; s3 ]/ ]3 f0 H! @, q! q6 Q# c7 Lset(get(get(H(i),'Annotation'),'LegendInformation'),'IconDisplayStyle','off');
0 K% F" @0 f$ a& J4 t* T: P, {  P4 v/ Uend
" t0 m, r. [8 E4 n2 u0 X  dlegend('1','6','11','16','21');

方法2：简单到郁闷

H = plot(data);
) _' _! c2 ]& G) W; Slegend(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');
0 x4 a* m- V( u2 A5 `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');

yin123

Matlab绘图中legend的终极用法