legend in subplot

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Hassan 2011-5-5

I am plotting my data using subplot. since the legend is a bit long, I want to put a horzontal legend in top of each two sub plots.I can create a legend for each subplot but don't know how to create one at the top of each two plots. I apperciate your help.
x=1:80;
y=rand(15,80);
j=1;
legend={'LC1','LC2','LC3','LC4','LC5','LC6','LC7'};
for ii=1:4
for i=1:4
subplot(2,2,i)
hold on;
row = 0;
row = row+1;
plot(x(j:j+4),y(row,j:j+4))
end
j=j+5;
end

采纳的回答

Hassan 2011-5-6
I found another way. First I created a subplot with a legend, then placed the legend on the appropriate place on the plot, I created a M-code from the plot and got the position of the legend, then used the position for all subplots. . . .
end
leg1=legend(legend);
set(leg1,'Position',[p1 p2 p3 p4]);
j=j+5;
end
Dan Po 2016-9-30

subplot(121);
peaks
legend('peaks');
subplot(122);
plot(1:10);
legend('1:10')

更多回答（2 个）

Update
Since this thread continues to get 500+ views per month 9 years later, here's an updated solution for Matlab r2020b or later.
Using TiledLayout, legends can be positioned relative to figure edges and can contain graphics objects from different subplots or tiles.
Examples:
0 个评论显示 -1更早的评论隐藏 -1更早的评论

Laura Proctor 2011-5-5
You cannot have a legend that pulls data from more than one subplot. However, you can plot all the data in one subplot, then set the visibility to off and create a legend that will capture everything. Here's an example:
figure
subplot(211)
plot(1:10)
hold on
hi = plot(sin(1:10),'mx-');
legend('one','two','Location','NorthOutside')
set(hi,'Visible','Off')
subplot(212)
plot(sin(1:10),'mx-');
6 个评论显示 5更早的评论隐藏 5更早的评论
It's because of this line
set(hi,'Visible','Off')
You are setting the 2nd line in the first axes to Visible=off so it is not displayed. Therefore, it's grayed out in the legend.
Instead, use object handles to specify what should go in the legend.

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