The General Second Order Polynomial Datum Shift method provides an interface to define a simple second order polynomial transformation between two Horizontal Datums. The "A" parameters provide terms for the shift in the Easting, and the "B" parameters provide terms for the shift in the Northing. The basic formula for computing the difference takes the following form:
dx = A0 + (Au1v0 * u) + (Au0v1 * v) + (Au2v0 * u^2) + (Auv * uv) + (Au0v2 * v^2)
dy = B0 + (Bu1v0 * u) + (Bu0v1 * v) + (Bu2v0 * u^2) + (Buv * uv) + (Bu0v2 * v^2)
The "General Second Order Polynomial" DatumShift has the following Parameters:
Parameter Name | Type |
A0 | Double |
Au1v0 | Double |
Au0v1 | Double |
Au2v0 | Double |
Au1v1 | Double |
Au0v2 | Double |
B0 | Double |
Bu1v0 | Double |
Bu0v1 | Double |
Bu2v0 | Double |
Bu1v1 | Double |
Bu0v2 | Double |