Coordinate Reference Systems
Transform Coordinates
Remarks
Derived at 21 points in May 2009. Residuals at 18 test points within 0.1m horizontal and 0.2m vertical. Info source also provides a Position Vector tfm of similar accuracy. See codes 5034-35 for preferred tfms for islands of Flores and Corvo.
Frequently Asked Questions
How do I convert Azores Occidental 1939 to PTRA08 coordinates?
Use the coordinate transformation tool above to convert Azores Occidental 1939 (EPSG:4182) to PTRA08 (EPSG:5013). Enter your source coordinates and click Transform. This uses the Geocentric translations (geog2D domain) method with 0.5m accuracy.
How do I transform Azores Occidental 1939 to PTRA08 using Proj4js?
Use proj4.defs to define both EPSG:4182 and EPSG:5013, then call proj4(source, target, [x, y]) to convert coordinates programmatically.
What is the accuracy of the Azores Occidental 1939 to PTRA08 transformation?
This transformation (EPSG:5033) has an accuracy of 0.5m using the Geocentric translations (geog2D domain) method. Area of use: Portugal - Azores W - onshore.