Plot a function of two variables
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I want to plot the function sin(4*pi*x)*sin(4*pi*y).
I tried the following but I am not sure if I am doing the right thing. Any help will be appreciated. Thanks
h = 2/11;
x = -1+h:h:1-h;
y = x;
[X,Y] = meshgrid(x,y);
z = @(x,y) sin(4*pi*x).* sin(4*pi*y); % Create Function
plot(x, z(X,Y))
2 Comments
Cris LaPierre
on 13 Mar 2021
Edited: Cris LaPierre
on 13 Mar 2021
What are you trying to do? Describe that, and then we can tell you if you are doing the right thing.
Accepted Answer
Cris LaPierre
on 13 Mar 2021
I think you want to plot a surface rather than a line plot. Use surf with inputs X, Y and z. This will allow you to see the response over the full X-Y parameter space. Since the number of points will affect the resolution of this surface, I use linspace instead of the colon operator.
h = 2/11;
x = linspace(-1+h,1-h,50);
y = x;
[X,Y] = meshgrid(x,y);
z = @(x,y) sin(4*pi*x).* sin(4*pi*y); % Create Function
surf(X,Y,z(X,Y))
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