Convert coordinates from Fatu Iva 72 (EPSG:4688) to RGPF (EPSG:4687) — official EPSG transformation parameters, accuracy and area of use, with a free in-browser converter.
The EPSG Geodetic Parameter Dataset defines 1 transformation between Fatu Iva 72 (EPSG:4688) and RGPF (EPSG:4687). Its parameters, accuracy and area of use are listed below.
| Parameter | Value | Unit |
|---|---|---|
| X-axis translation(tx) | 347.103 | metre |
| Y-axis translation(ty) | 1078.125 | metre |
| Z-axis translation(tz) | 2623.922 | metre |
| X-axis rotation(rx) | 33.8875 | arc-second |
| Y-axis rotation(ry) | -70.6773 | arc-second |
| Z-axis rotation(rz) | 9.3943 | arc-second |
| Scale difference(ds) | 186.074 | parts per million |
The same transformation with common GIS tools and libraries:
from pyproj import Transformer
transformer = Transformer.from_crs("EPSG:4688", "EPSG:4687", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)geographic system using latitude and longitude on an ellipsoid · Area of use: French Polynesia - Marquesas Islands - Fatu Hiva
+proj=longlat +ellps=intl +towgs84=347.175,1077.618,2623.677,33.9058,-70.6776,9.4013,186.0647 +no_defs +type=crsMore about EPSG:4688 →
geographic system using latitude and longitude on an ellipsoid · Area of use: French Polynesia
+proj=longlat +ellps=GRS80 +no_defs +type=crsMore about EPSG:4687 →