How to add extra text to plot legend?

Hi, guys

Let us suppose that I have the following simple code:

clc; clear all; close all;

x = linspace(0, 2*pi, 100);

figure
hold on;grid on; box on;
plot(x,sin(x));
plot(x, cos(x));
plot(x, tan(x));
axis([0 2*pi -4 4]);
legend('sin', 'cos', 'tan'); 

My goal is to add some extra text in the legend box as shown in the following image example (image modified with gimp):

Can you help me to codify this task?

[KSSV]

You can try legend title.

[Giuseppe]

Thanks! Is it possible to put the title below the legend instead of above?

Answer 1

[Kiran Felix Robert]

Hi Guiseppe,

Please refer the legend properties documentation and the following MATLAB Answer post for legend positioning.

https://in.mathworks.com/matlabcentral/answers/324848-setting-a-title-for-a-legend

Answer 2

[Ron Fredericks]

You can append extra text to a legend using a hidden marker. You can also optionally add an extra line seperating the text from the standard legend objects using newline.

Code:

clc; clear all; close all;
x = linspace(0, 2*pi, 100);
figure
hold on;grid on; box on;
plot(x,sin(x));
plot(x, cos(x));
plot(x, tan(x));
axis([0 2*pi -4 4]);
% Code to append text to legend
plot(0, 0, "o", 'color', 'none', 'MarkerSize', 10);
legend('sin', 'cos', 'tan', [newline 'Extra Text Here']);