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

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')

Answer 1

[Star Strider]

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

Use the hold function to make multiple plots on one set of axes.

[JJLeov]

thank you very much Star Strider. LV

[Star Strider]

My pleasure.

[T de Vries]

Dear Star Strider,

Hopefully, you or someone else, can help me.

I want to make a figure that plots two (and more) contourf plots in the same figure.

For this I used the hold on and hold off as mentioned above, but this is not working unfornutately. Can someone help me?

Kind regards,

Tessa