Need help using mesh and surf

Im trying to generate a surface plot using the following variables,

-10<x<10

-10<y<10

t=sqrt(x^2 + y^2)

z=sin(t)/t

when i try to use the surf (or mesh) command it gives me an error saying that Z must be a matrix and not a scaler or vector. I've tried surf(x,y,z) and many other variations, but to no avail. Please help.

Answer 1

[Mischa Kim]

Shawn, use

 [X,Y] = meshgrid(-10:0.5:10, -10:0.5:10);   

 t = sqrt(X.^2 + Y.^2);
 Z = sin(t)./t;
 surf(X,Y,Z)

[Shawn]

Thank you so much for the quick response!