GeoHex for Dart

Implementation of geohex.org encoding for Dart language.

Usage

Encoding example:

import 'package:geohex/geohex.dart';

main() {
  //Location of Capetown
  String geoHexCode = GeoHex.encode(-33.91522085, 18.3758784, 4); //OM4138
}

Decoding example:

import 'package:geohex/geohex.dart';

main() {
  //Geocode of Capetown
  Zone geoHexZone = GeoHex.decode('OM4138'); // instance of Zone with lat -33.91522085 lon 18.3758784 and level 4
}

Note

This realisation has some difference with the original lib. It's location clamping. Original geohex.org uses double representation of lat'n'lon, so theoretically, it should take more precision etc. but in fact, it leads to errors.

Refer to this - decimal degrees, eight points after dot the should be enough for everything.