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
9 y( l2 X* s, K- d' v) m$ nEastI：nside right
West：Inside left
NorthEast：Inside top right (default)
- f, ^$ ^" t6 }NorthWest：Inside top left
SouthEast：Inside bottom right
, P+ C/ N$ q& w3 V0 PSouthWest：Inside bottom left
% ]9 A& x/ o/ s4 q2 A! cNorthOutside：Outside plot box near top
SouthOutside：Outside bottom
EastOutside：Outsideright
1 u) Q' R- c, a8 R; p* D* EWestOutside：Outside left
NorthEastOutside：Outside top right
) G8 M5 K4 C& q+ c" {+ n7 qNorthWestOutside：Outside top left
  p+ {! A8 G. I0 ]8 wSouthEastOutside：Outside bottom right
( Z! C4 W. p4 r; c7 k; sSouthWestOutside：Outside bottom left
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]
. K6 F1 }2 S: Iset(get(get(H(i),'Annotation'),'LegendInformation'),'IconDisplayStyle','off');
end
) p3 a! a+ k, E2 h- ulegend('1','6','11','16','21');

方法2：简单到郁闷

H = plot(data);
5 f: ]- z7 v6 ^  k% m$ z# X  n6 b1 Nlegend(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');
" _# g1 @4 e4 r4 ~9 Dset(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# t% F5 q7 m2 K: ]

yin123

Matlab绘图中legend的终极用法