Position Vector transformation (geog2D domain)
Derived at 22 points in May 2009. Residuals at 17 test points within 0.1m horizontal and 1m vertical. Info source also provides a less accurate 3-parameter transformation (dX=-503.174m, dY=-247.255m, dZ=312.316m).
Instituto Geografico Portugues; http://www.igeo.pt
2010-03-30
Geodesy.
See CRS code 4663 for recommended coordinate axis representation for the human interface.
Portugal - Madeira, Porto Santo and Desertas islands - onshore.
Ellipsoidal 2D CS. Axes: latitude, longitude. Orientations: north, east. UoM: dec deg