Plotting hyperplane created using meshgrid (something simple)

Dear all,

I created the following hyperplane:

y = [-20:0];

z = [-30:-5];

x = [-50:50];

[xx,yy,zz] = meshgrid(x,y,z);

When I try to plot it using surf(xx,yy,zz) I get an error "Value must be a vector or 2D array of numeric type".

How do I solve this?

Thank you a lot!

Answer 1

[Star Strider]

I am not certain what you want to do.

One approach:

N = 25;
y = linspace(-20,0,N);
x = linspace(-50,50,N);
z = linspace(-30,-5,N);
B = [x(:) y(:) ones(N,1)] \ z(:);
[xx,yy] = meshgrid(x,y);
zz = B(1)*xx + B(2)*yy + B(3)*ones(size(xx));

figure
surf(xx, yy, zz)
grid on

You could also use the isosurface function, however it is not obvious to me what you would use as the ‘isovalue’.

[John G]

Excellent, thanks a lot!

[Star Strider]

As always, my pleasure!