two legends in the same box

Hello,

I want the legends which belong to two y axes in the same box but it only displays one set of legend belonging to only one (red) y axes . Can you help me more ? I want blue ones on the right.

thank you

fig=figure(15);
left_color = [1 0 0];
right_color = [0 0 1];
set(fig,'defaultAxesColorOrder',[left_color; right_color]);
yyaxis left
plot (Ms(1:4,3),Ms(1:4,4)*1000,'ro');hold on
plot (Ms(5,3),Ms(5,4)*1000,'r*')
plot (Ms(6,3),Ms(6,4)*1000,'rs')
plot (Ms(7:8,3),Ms(7:8,4)*1000,'rd')
legend('2 s','2 io','2o','2lo')
xlabel('An (hr)')
ylabel('M (A)')
yyaxis 'right'
plot (Ms(1:4,3),Ms(1:4,5)/1000,'bo')
plot (Ms(5,3),Ms(5,5)/1000,'b*')
plot (Ms(6,3),Ms(6,5)/1000,'bs')
plot (Ms(7:8,3),Ms(7:8,5)/1000,'bd');hold off
legend('2 s','2 io','2o','2lo')
ylabel('µ(T)')
xlim([0.5 4.5])
set(gca,'FontSize',18)
set(gcf,'Position',[100 100 600 500])

Answer 1

[Adam Danz]

Ms = randi(10,10,10); 

fig=figure(15);
left_color = [1 0 0];
right_color = [0 0 1];
set(fig,'defaultAxesColorOrder',[left_color; right_color]);
yyaxis left
plot (Ms(1:4,3),Ms(1:4,4)*1000,'ro','DisplayName', '2 s');
hold on
plot (Ms(5,3),Ms(5,4)*1000,'r*', 'DisplayName', '2 io')
plot (Ms(6,3),Ms(6,4)*1000,'rs', 'DisplayName', '2o')
plot (Ms(7:8,3),Ms(7:8,4)*1000,'rd', 'DisplayName', '2lo')
% legend('2 s','2 io','2o','2lo')
xlabel('An (hr)')
ylabel('M (A)')
yyaxis 'right'
plot (Ms(1:4,3),Ms(1:4,5)/1000,'bo','DisplayName', '2 s');
plot (Ms(5,3),Ms(5,5)/1000,'b*', 'DisplayName', '2 io')
plot (Ms(6,3),Ms(6,5)/1000,'bs', 'DisplayName', '2o')
plot (Ms(7:8,3),Ms(7:8,5)/1000,'bd', 'DisplayName', '2lo');
hold off
% legend('2 s','2 io','2o','2lo')
ylabel('µ(T)')
xlim([0.5 4.5])
set(gca,'FontSize',18)
set(gcf,'Position',[100 100 600 500])

legend('NumColumns',2)

[Adam Danz]

> Thanks but I want to disply like this ; (i.e red color, name, blue color). How can I do? Can you please help me more?

Sure, using my answer, set the legend strings to the blue objects to empty strings. Try ' ' or " ".

[Babu Sankhi]

thank you

[Adam Danz]

I deleted the "answer" you accepted because it was merely a follow-up question.

I don't understand why you officially accepted it.

If you found a different solution you can write a new answer with the solution.

If my solution worked for you you can accept it if you'd like.

[Babu Sankhi]

Thanks

[Adam Danz]

You need to change the fontsize of the legend but this will affect the fontsize of all strings in the legend.

legend(___,'FontSize', __)

I don't know whether it's possible to specify the fontsize of single legend strings. There certainly is not a documented approach for that. When it comes to this level of detail, I usually assign labels in programs outside of Matlab (ie, powerpoint).