This is a C library that allows you to find an area a point belongs to using a database file. A typical example would be looking up the country or timezone given a latitude and longitude. The timezone database also contains the country information.
The API should be self-explanatory from zonedetect.h. A small demo is included (demo.c)
The databases are obtained from here and converted to the format used by this library.
You can test the library using an online API: https://api.bertold.org/geozone It takes the following GET parameters:
- lat: Latitude.
- lon: Longitude.
- c: Set to one (c=1) to produce compact JSON.
For example: https://api.bertold.org/geozone?lat=51&lon=5
You are free to use this API for any application, but I am not responsible for the quality of service. Please contact me if your application requires reliability.
An online demo is available here: https://api-public.bertold.org/demo/geozone.html. Simple click anywhere on the map and see the result of the query.