Convert coordinates from Combani 1950 (EPSG:4632) 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 Combani 1950 (EPSG:4632) and RGM04 (EPSG:4470). Its parameters, accuracy and area of use are listed below.
| Parameter | Value | Unit |
|---|---|---|
| X-axis translation(tx) | -599.928 | metre |
| Y-axis translation(ty) | -275.552 | metre |
| Z-axis translation(tz) | -195.665 | metre |
| X-axis rotation(rx) | -0.0835 | arc-second |
| Y-axis rotation(ry) | -0.4715 | arc-second |
| Z-axis rotation(rz) | 0.0602 | arc-second |
| Scale difference(ds) | 49.2814 | parts per million |
The same transformation with common GIS tools and libraries:
from pyproj import Transformer
transformer = Transformer.from_crs("EPSG:4632", "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=-382,-59,-262,0,0,0,0 +no_defs +type=crsMore about EPSG:4632 →
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 →