Based on the Helmert family of transformations, a Four Parameter transformation is similar to a Seven Parameter CFR transformation, except it does not include rotations.
The "FourParameter" DatumShift has the following Parameters:
|
Parameter Name |
Parameter String |
Units |
|
X Translation |
dx |
|
|
Y Translation |
dy |
|
|
Z Translation |
dz |
|
|
Scale Factor |
k |