RGM04 to RGM23 (2)
EPSG:10683±0.05 mBest accuracy- Method:
- Geocentric translations (geog2D domain) by grid (IGN)
- Area of use:
- Mayotte
- Scope:
- Geodesy, engineering survey, topographic mapping.
Grid file: RGM04versRGM23.txt
Convert RGM04 to RGM23
Convert coordinates from RGM04 (EPSG:4470) to RGM23 (EPSG:10671) — official EPSG transformation parameters, accuracy and area of use, with a free in-browser converter.
Official EPSG transformations from RGM04 to RGM23
The EPSG Geodetic Parameter Dataset defines 2 transformations between RGM04 (EPSG:4470) and RGM23 (EPSG:10671). Each applies to a specific area — pick the one whose area of use covers your data.
RGM04 to RGM23 (1)
EPSG:10682±0.1 m- Method:
- Geocentric translations (geog2D domain)
- Area of use:
- Mayotte
- Scope:
- GIS.
| Parameter | Value | Unit |
|---|---|---|
| X-axis translation(tx) | -0.5377 | metre |
| Y-axis translation(ty) | 0.3946 | metre |
| Z-axis translation(tz) | 0.3608 | metre |
Approximation at the +/- 0.1m level. For more accurate official transformation see RGM04 to RGM23 (2) (code 10683).
Convert EPSG:4470 to EPSG:10671 in code
The same transformation with common GIS tools and libraries:
from pyproj import Transformer
transformer = Transformer.from_crs("EPSG:4470", "EPSG:10671", always_xy=True)
x, y = transformer.transform(-73.9857, 40.7484)
print(x, y)Source: EPSG:4470 — RGM04
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 →
Target: EPSG:10671 — RGM23
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:10671 →
Frequently asked questions
- How accurate is converting RGM04 to RGM23?
- The most accurate official EPSG transformation between these systems is accurate to about ±0.05 m within its stated area of use. Browser-based converters approximate datum shifts with Helmert parameters; for surveying-grade work apply the official transformation (including the grid-shift files listed below) in a desktop GIS.
- Does my data leave the browser when I use this converter?
- No. All coordinate transformations are computed locally in your browser using proj4js. The coordinates you enter are never transmitted to any server.