How can I show the contour plot of two functions in a graph?

Question

JJLeov 2015-9-24

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/244910-how-can-i-show-the-contour-plot-of-two-functions-in-a-graph

评论： T de Vries 2020-6-14

采纳的回答： Star Strider

在 MATLAB Online 中打开

I have two contour plots below. I would like to show in the same graph both "contours.

How should I proceed?

Thanks.

x = linspace(-10,10);
y = linspace(-10,10);
[X,Y] = meshgrid(x,y);
Z = X.^2+Y.^2;
figure
contour(X,Y,Z, 'ShowText','on')
x = linspace(-10,10);
y = linspace(-10,10);
[X,Y] = meshgrid(x,y);
Z = X +Y;
figure
contour(X,Y,Z, 'ShowText','on')

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Answer 1

Star Strider 2015-9-24

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/244910-how-can-i-show-the-contour-plot-of-two-functions-in-a-graph#answer_193599

在 MATLAB Online 中打开

See if this does what you want:

x = linspace(-10,10);
y = linspace(-10,10);
[X,Y] = meshgrid(x,y);
Z = X.^2+Y.^2;
figure
contour(X,Y,Z, 'ShowText','on')
Z = X +Y;
hold on
contour(X,Y,Z, 'ShowText','on')
hold off