MATLAB: How can Make a structure that is 480 by 640 , and each cell has three fields X,Y,Z which are zero

MATLABstructures

How can Make a structure that is 480 by 640 , and each cell has three fields X,Y,Z which are zero ?

One way,

    S.X=0; 
    S.Y=0; 
    S.Z=0;
    S(1:480,1:640)=S;

Use the plot function.

Is it something like this?

x = rand(100,1);
y = rand(100,1);
z = rand(100,1);
t = rand(100,3);
scatter3(x,y,z,20,t);

HTH