Setting legend of a plot

How do I set up a legend like this(two curves one legend then some gap)??

[VBBV]

The plots you show have custom legends.

Try this link available in FEX where you can change the legend layout and behavior as you wanted

https://in.mathworks.com/matlabcentral/fileexchange/31092-legendflex-m-a-more-flexible-customizable-legend

[Dyuman Joshi]

Why not plot an empty line along side and use a blank as its legend entry?

x = 0:0.01:10;

figure
plot(x, sin(x))
hold on

plot(x,cos(x));
plot(x,floor(x/5))
plot(x,NaN(size(x)))
xlim([-1 11])

str = ["sin" "cos" "custom" ""];
legend(str, 'NumColumns', 2)

Answer 1

[Star Strider]

Set the original legend to 'Location','NE' and then use:

legend('boxoff')

Also, see Position Multiple Axes in Figure if you have not done so already.

[Shahriar Shafin]

@Star Strider I have no problem with the plots,in legend section I set the parameters before as u said but it didnt show like above .My figure mentioned below:

[Star Strider]

I am having real problems with MATLAB and this site this morning.

This renders correctly on my computer —

However it does not render correctly when I run the same code here —

F = openfig('fluence ttm non-equib new.fig');
F.Visible = 'on';                                   % Make Figure Visible
% get(F)
lgd = F.Children(2);                                % Get Legend Handle
pos = lgd.Position;                                 % Get Legend Position
lgd.Position = pos+[-0.04 -0.20 0.06 0.13];         % Adjust Legend Position [Left  Lower Width Height]

% daspect([1 2 1])                                    % Use This To Stretch The Axes If Neceessary

The approach is to adjust the legend position until it works.

Is this the result you want, or something else?

.

[Shahriar Shafin]

@Star Strider thanks a lot for ur concern but I wanted to do like the upper figure's legend mentioned in my question(dotted plot and line plot under the same legend),want to make it 5 legends(10,20,30,40,50) rather than 10 (10,10,20,20,30,30,40,40,50,50).

[Star Strider]

That was not made clear.

Try this —

F = openfig('fluence ttm non-equib new.fig');;
F.Visible = 'on';                                   % Make Figure Visible
% get(F)
lgd = F.Children(2);                                % Get Legend Handle
lgd.String = lgd.String(1:2:end);                   % Use  Every Other Element In The String
lgd.String = strrep(lgd.String,'J',' J');           % Add A Space (Optional)
lgd.String = strrep(lgd.String,'m2','m^2');         % Add Superscripts (Optional)
pos = lgd.Position;                                 % Get Legend Position
lgd.Position = pos+[-0.04 -0.10 0.06 -0.01];        % Adjust Legend Position By Adding ± Offsets [Left  Lower Width Height]

% daspect([1 2 1])                                    % Use This To Stretch The Axes If Neceessary

Again, it does not render well here, however it does on my computer and in MATLAB Online.

.

[Shahriar Shafin]

@Star Strider got it ,thanks a lot.

[Star Strider]

As always, my pleasure!

Answer 2

[Image Analyst]

I think you'd have to build it up manually with the plot and text functions.

Answer 3

[VINAYAK LUHA]

Hello Shahriar,

It looks like you want to overlay two sets of axes, with the larger one encompassing the smaller, and include a common legend for both in MATLAB. To accomplish this task, adhere to the following instructions:

• First, Create an axes called "larger" and add plots to it.
• Next, define a another axes called "smaller" to be positioned within the "larger" axes.
• Finally,to create a common legend, plot invisible lines and assign the legends to them.

Here's the MATLAB code for your reference:

x = linspace(1, 10, 100); 
y1 = log(x);
y2 = log(x.^2);
y3 = log(x.^3);
y4 = log(x.^4);

figure;
larger = axes;
plot(larger, x, y1, 'r-', x, y2, 'b-', x, y3, 'g-', x, y4, 'k-');
hold(larger, 'on'); 

smaller = axes('Position', [0.2 0.6 0.25 0.25]); 
plot(smaller, x, y1, 'r-', x, y2, 'b-', x, y3, 'g-', x, y4, 'k-');

h1 = plot(larger, NaN, NaN, 'r-'); 
h2 = plot(larger, NaN, NaN, 'b-'); 
h3 = plot(larger, NaN, NaN, 'g-'); 
h4 = plot(larger, NaN, NaN, 'k-'); 

legend(larger, [h1, h2, h3, h4], {'log(x)', 'log(x^2)', 'log(x^3)', 'log(x^4)'});

Hope this helps you to understand how to have a common legend for two nested axes

Regards

Vinayak Luha