Hi, I am trying to plot 3 variables in ezcontour plot. But it shows error.

I want to plot this equation:

x^2+sin(x*y)+y^2+z^2=0

using ezcontour over the domain (-pi/2<x<pi/2,-pi/2<y<pi/2). But I am getting error. Help please. Thank you

Answer 1

[Walter Roberson]

ezcontour() and the new fcontour() can only plot functions of at most 2 variables. You will need to construct a 3D array and use isosurface() on it.

My testing suggests that the only solution is x = 0, y = 0, z = 0

[Krittika Saha]

So I need to create a 3D array first by meshgrid function?

[Walter Roberson]

Yes, isosurface requires meshgrid inputs.