How to shade area between three lines?

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Youngmin 2020-3-19

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评论： Star Strider 2020-3-19

Hello,

I would like to shade under the curve at which is greater than 1 in y value and greater than 20 in y value in the figure below.

But, fill function seems to allow shading the area between two vectors and not allow to use xline and/or yline functions at the same time. Please let me know how I can fill the area (upper right side area under the curve).

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Answer 1

Star Strider 2020-3-19

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https://ww2.mathworks.cn/matlabcentral/answers/511642-how-to-shade-area-between-three-lines#answer_420814

编辑：Star Strider 2020-3-19

在 MATLAB Online 中打开

I believe there is an error in your description.

Try this interpretation of what I believe you intend:

x = linspace(0, 50);                                            % Create Data
y = 6 * (exp(-(x-10).^2/25) + exp(-(x-25).^2/50));              % Create Data
Lvy = (y >  1) & (x > 20);
figure
plot(x, y)
hold on
patch([x(Lvy) fliplr(x(Lvy))], [ones(size(x(Lvy))) fliplr(y(Lvy))], 'g')
hold off