Coordinates Geolocalization

dCode uses a map and locates GPS coordinates with their latitude and longitude in degree.

Example: 45.678, -5.4321 will be positionned to latitude +45.678 and longitude -5.4321.

The latitude is the angle of the point on the North-South axis, starting from 0° to the equator and going from -90° to the south pole and +90° to the north pole.

Longitude is the angle of the point on the West-East axis, starting from 0° on the GreenWich meridian and ranging from -180° west to +180° east.

The geocoding process is based on a massive database of addresses data. The working geolocation is only partially automated. An expert called geocoder must complete software tools.

Initially, some addresses are geolocalized manually and the new addresses are encoded on the fly if possible (same street name, same town, same zip-code, infer close location).

Countries have generally an open address database that is used by OpenStreetMap: here (link)