Convert coordinates from Cadastre 1997 (EPSG:4475) to RGM04 (EPSG:4470) — official EPSG transformation parameters, accuracy and area of use, with a free in-browser converter.
The EPSG Geodetic Parameter Dataset defines 1 transformation between Cadastre 1997 (EPSG:4475) and RGM04 (EPSG:4470). Its parameters, accuracy and area of use are listed below.
| Parameter | Value | Unit |
|---|---|---|
| X-axis translation(tx) | -381.788 | metre |
| Y-axis translation(ty) | -57.501 | metre |
| Z-axis translation(tz) | -256.673 | metre |
May be taken as approximate transformation Cadastre 1997 to WGS 84 - see transformation code 4290.
The same transformation with common GIS tools and libraries:
from pyproj import Transformer
transformer = Transformer.from_crs("EPSG:4475", "EPSG:4470", 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: Mayotte - onshore
+proj=longlat +ellps=intl +towgs84=-381.788,-57.501,-256.673,0,0,0,0 +no_defs +type=crsMore about EPSG:4475 →
geographic system using latitude and longitude on an ellipsoid · Area of use: Mayotte
+proj=longlat +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +no_defs +type=crsMore about EPSG:4470 →