Convert coordinates from Martinique 1938 (EPSG:4625) to RGAF09 (EPSG:5489) — official EPSG transformation parameters, accuracy and area of use, with a free in-browser converter.
The EPSG Geodetic Parameter Dataset defines 1 transformation between Martinique 1938 (EPSG:4625) and RGAF09 (EPSG:5489). Its parameters, accuracy and area of use are listed below.
| Parameter | Value | Unit |
|---|---|---|
| X-axis translation(tx) | 127.744 | metre |
| Y-axis translation(ty) | 547.069 | metre |
| Z-axis translation(tz) | 118.359 | metre |
| X-axis rotation(rx) | -3.1116 | arc-second |
| Y-axis rotation(ry) | 4.9509 | arc-second |
| Z-axis rotation(rz) | -0.8837 | arc-second |
| Scale difference(ds) | 14.1012 | parts per million |
The same transformation with common GIS tools and libraries:
from pyproj import Transformer
transformer = Transformer.from_crs("EPSG:4625", "EPSG:5489", 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: Martinique - onshore
+proj=longlat +ellps=intl +no_defs +type=crsMore about EPSG:4625 →
geographic system using latitude and longitude on an ellipsoid · Area of use: Caribbean - French Antilles
+proj=longlat +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +no_defs +type=crsMore about EPSG:5489 →