What coordinate reference system does the TransXChange Publisher use?
For stop point and track point coordinates, a TransXChange document may contain geospatial references in OS Grid Eastings and Northings, WGS84 latitude and longitude, or both. When plotting route tracks on maps the Publisher chooses coordinates as follows: • If OS Grid Easting and Northing coordinates are available for a point, it uses them directly • If only WGS84 coordinates are available for a point it converts them to OS Grid using a publicly available transform. For Stop Points, the Publisher normally fetches the stop coordinates from the NaPTAN database which holds them in OS Grid Eastings and Northings.
