clc; clear all ;
x = -4:1:4; % The range of x values.
y = -4:1:4; % The range of y values.
[X,Y] = meshgrid (x,y); % This generates the actual grid of x and y values.
% Generating the Z Data
Z=Y.^2+X.^2; % The function we're plotting.
figure(1); % Generating a new window to plot in.
surf(X,Y,Z) % The surface plotting function.
