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Description:
geocoder offline
Offline Geocoder #
Dart library for super-fast offline reverse geocoding. Package use k-d tree for a search of the nearest location in a given file.
One when Geocoder is initialized, search for location is super-fast, about 4-5 milliseconds.
Data #
For using the reverse geocoding library you need to provide а file with data about places among you want to run reverse geocoding.
In examples you can see how to use а library with two example files:
GeoNames data file with all world cities with a population above 15 000
USGS data file with USA cities with a population above 5000.
Library allows you to use any other file who has at least data about name, latitude, and longitude of places you want to search.
Usage #
Import #
import 'package:geocoder_offline/geocoder_offline.dart';
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Initialization #
var geocoder = GeocodeData(
File('/example/NationalFedCodes_20191101.csv').readAsStringSync(), //input string
'FEATURE_NAME', // place name header
'STATE_ALPHA', // state/countery header
'PRIMARY_LATITUDE', // latitute header
'PRIMARY_LONGITUDE', // longitude header
fieldDelimiter: ',', // fields delimiter
eol: '\n');
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Reverse geocoding #
List<LocationResult> result = geocoder.search(41.881832, -87.623177);
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Features and bugs #
If you any problem using library or you have any new needs, please file feature requests and bugs at the issue tracker.
License
For personal and professional use. You cannot resell or redistribute these repositories in their original state.
Files:
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