How to setup legend for a figure with two axes (left and right)?
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Alborz Sakhaei
el 3 de Oct. de 2016
Comentada: Armando Cerullo
el 30 de Sept. de 2021
I have a figure with two axes (left and right). 2 lines on left axis and one line on right axis. I can not get all legends in one box using following code.
PS. I have read previous discussions (links below) on this topic but does not seem to work for me!
x = 0:0.01:10;
y11 = sin(x);
y12 = cos(x);
y2 = ones(1001,1);
figure;
ax(1) = axes('position',[0.1 0.1 0.8 0.8]);
ax(2) = axes('position',[0.1 0.1 0.8 0.8], 'yaxislocation','right','color','none');
line('parent',ax(1),'xdata',x,'ydata',y11,'color','b');
line('parent',ax(1),'xdata',x,'ydata',y12,'color','g');
line('parent',ax(2),'xdata',x,'ydata',y2,'color','r');
legend( [ax(1) ; ax(2)] , {'sin','cos','one'} )
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Jakub Rysanek
el 4 de Oct. de 2016
You can create the legend using the handles of your line objects:
l1=line('parent',ax(1),'xdata',x,'ydata',y11,'color','b');
l2=line('parent',ax(1),'xdata',x,'ydata',y12,'color','g');
l3=line('parent',ax(2),'xdata',x,'ydata',y2,'color','r');
legend( [l1;l2;l3] , {'sin','cos','one'} );
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Más respuestas (1)
KSSV
el 4 de Oct. de 2016
Editada: KSSV
el 4 de Oct. de 2016
Try the legend separately:
legend(ax(1) , {'sin','cos'} ) ;
legend(ax(2) , {'one'} ) ;
2 comentarios
Subhamoy Saha
el 25 de Dic. de 2018
Editada: Subhamoy Saha
el 25 de Dic. de 2018
For R2014b that works fine but for R2017a only last legend is showing (i.e., ax(2) legend) ignoring the first one (, i.e. ax(1)). This is really important as I want to set location for these two legend at two different location and so cannot use a single legend command. Please help how to proceed.
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