How to create a legend with multiple colored squares?

Hey,

how can I create a legend for the background of the following plot?

I would like to have a textbox with 3 colored squares (like the background) and the related category.

Thanks for your help!!

Answer 1

[Arthur Roué]

% Create an axe
hAxe = axes(...);

% Get your patches handles
hGreen = patch(hAxe, ...);
hYellow = patch(hAxe, ...);
hRed = patch(hAxe, ...);
    
% Add legend
legend(hAxe, [hGreen hYellow hRed], {'Green', 'Yellow', 'Red'})

[ZimtBolten]

Thank you! How can I position the legend in the right-top-corner?

[Arthur Roué]

Yes, with the property Location

legend(hAxe, [hGreen hYellow hRed], {'Green', 'Yellow', 'Red'}, ...
    'Location', 'northeast')

Here a link to legend properties documention, you'll see you can custom your legend in several ways.

[ZimtBolten]

One last question: How can I add the Data of the figure to the same legend with a black line?

Thanks a lot!

[Arthur Roué]

% Create an axe
hAxe = axes(..);
% Get your patches handles
hGreen = patch(hAxe, ..);
hYellow = patch(hAxe, ..);
hRed = patch(hAxe, ..);
    
% Get your line handle
hData = plot(hAxe, ..)

% Add legend
legend(hAxe, [hGreen hYellow hRed, hData], {'Green', 'Yellow', 'Red', 'Data'}, ...
    'Location', 'northeast')

[ZimtBolten]

Awesome:) Thanks!