Convert coordinates from Tahaa 54 (EPSG:4629) 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 Tahaa 54 (EPSG:4629) and RGPF (EPSG:4687). Its parameters, accuracy and area of use are listed below.
| Parameter | Value | Unit |
|---|---|---|
| X-axis translation(tx) | 72.438 | metre |
| Y-axis translation(ty) | 345.918 | metre |
| Z-axis translation(tz) | 79.486 | metre |
| X-axis rotation(rx) | -1.6045 | arc-second |
| Y-axis rotation(ry) | -0.8823 | arc-second |
| Z-axis rotation(rz) | -0.5565 | arc-second |
| Scale difference(ds) | 1.3746 | parts per million |
The same transformation with common GIS tools and libraries:
from pyproj import Transformer
transformer = Transformer.from_crs("EPSG:4629", "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 - Society Islands - Bora Bora, Huahine, Raiatea, Tahaa
+proj=longlat +ellps=intl +no_defs +type=crsMore about EPSG:4629 →
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 →