tcpGPS
2D displacements - GPS v2
17.1 2D Displacements
Calculate the displacements x and y through the Arithmetic average of the differences between the origin and the destination. Only a couple of points are necessary.
Formulas:
x′=x+Tx\ y′=y+Ty\
where:
x', y' = x, y transformed coordinates.
x, y = Original x, y coordinates.
Tx = Translation x.
Ty = Translation y.