Setting legend of a plot

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Shahriar Shafin
Shahriar Shafin on 30 Jan 2024
Commented: Star Strider on 31 Jan 2024
How do I set up a legend like this(two curves one legend then some gap)??
  2 Comments
VBBV
VBBV on 31 Jan 2024
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
Dyuman Joshi
Dyuman Joshi on 31 Jan 2024
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)

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Accepted Answer

Star Strider
Star Strider on 30 Jan 2024
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.
  6 Comments
Star Strider
Star Strider on 31 Jan 2024
As always, my pleasure!

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More Answers (2)

Image Analyst
Image Analyst on 30 Jan 2024
I think you'd have to build it up manually with the plot and text functions.

VINAYAK LUHA
VINAYAK LUHA on 30 Jan 2024
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

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