Three Parameter Transformation

This transformation will produce the same results as the Seven Parameter Transformation with all three rotation parameters and the scale parameter set to zero.

As with the Seven Parameter Transformation, this transformation proceeds in three phases. First, the geographic coordinates are converted to three-dimensional Cartesian, geocentric coordinates using the ellipsoid of the original datum. Second, the three translation parameters, Delta X, Delta Y, and Delta Z, are used to translate the geocentric coordinates. Third, the resulting geocentric coordinates are converted back to geographic form using the WGS84 ellipsoid.

As in all other cases for the translation parameters, the three parameters must be given in units of meters.