Centre of gravity method
A simple way of finding the best compromise location
calculates the centre of gravity (CG) of supply and
demand.
The co-ordinates of CG are:
0 0 = =
i i i i
i i
x w y w
x y w w
Where:
(X0 , Y0 ) are the co-ordinates of the CG which gives the facility location
(Xi , Yi ) are co-ordinates of each customer i, and supplier i
Wi
is expected demand at customer i, or expected supply from supplier i