How to denote the node numbers , when the co-ordinates of all nodes are known?

I have the co-ordinates of all nodes of a structure nodes as x,y and z co-ordinates How do I now denote the node numbers?

[KSSV]

What data is (x,y,z)? A structured or unstructured?

[S Priya]

x = reshape(R * cos(Theta_n), nNN, []);
y = reshape(R * sin(Theta_n), nNN, []);
z=zeros(nNN,3,m+1);
for j=1:m+1
    z(1:nNN,1,j)=x(:);
    z(1:nNN,2,j)=y(:);
    z(1:nNN,3,j)=(j-1)*L/m;
end

[darova]

Are you trying to create number in a mesh? Having points?

[S Priya]

Yes

Answer 1

[KSSV]

Refer:

https://in.mathworks.com/matlabcentral/fileexchange/44670-mesh-a-plate-with-hole

https://in.mathworks.com/matlabcentral/fileexchange/34143-meshing-thin-shells-using-four-noded-elements

https://in.mathworks.com/matlabcentral/fileexchange/33731-meshing-a-plate-using-four-noded-elements

[S Priya]

Not able to understand it, Sir.

Answer 2

[Walter Roberson]

The node number associated with z(A,:,B) should be A + (B-1)*(m+1)