How to plot a surface in an easy way

Hi guys! I have a function LSQDiff which takes a vector argument x that consists of two values x(1) and x(2) and returns a vector of differences.

I want to take a squared norm of this vector and plot it for different values of x(1) and different values x(2)

I have vector a for different values of x(1) and vector b for x(2);

How can I plot a surface with this?

Answer 1

[the cyclist]

Here is a simple example of using the surf() command to plot a surface.

a = 1:10;
b = 1:7;

[aa,bb] = meshgrid(a,b);

z = aa + bb.^2;

surf(aa,bb,z)