OfflineReverseGeocode

by AReallyGoodName

AReallyGoodName / OfflineReverseGeocode

Perform reverse geocoding locally and offline

451 Stars 66 Forks Last release: over 4 years ago (1.0) Other 38 Commits 1 Releases

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An Offline Reverse Geocoding Java library

Uses KD-Trees for extremely fast placename lookups

Licensed under The MIT License

A C# port by Necrolis is available at https://github.com/Necrolis/GeoSharp

Usage:

First download a placenames file from http://download.geonames.org/export/dump/

Allcountries.zip from that site is comprehensive however if you're on mobile try the cities1000.zip file. It's 1/80th of the size.

Then simply

ReverseGeoCode reverseGeoCode = new ReverseGeoCode(new FileInputStream("c:\\AU.txt"), true);

System.out.println("Nearest to -23.456, 123.456 is " + geocode.nearestPlace(-23.456, 123.456));

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