How to create a legend with multiple colored squares?

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ZimtBolten 2020-7-22

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https://ww2.mathworks.cn/matlabcentral/answers/568860-how-to-create-a-legend-with-multiple-colored-squares

评论： ZimtBolten 2020-7-23

采纳的回答： Arthur Roué

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!!

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采纳的回答

Arthur Roué 2020-7-22

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/568860-how-to-create-a-legend-with-multiple-colored-squares#answer_469173

在 MATLAB Online 中打开

% 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'})

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Arthur Roué 2020-7-22

在 MATLAB Online 中打开

% 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')