A world of hashes ... geo-hashes

The jts-discretizer is a tiny Java 8 library able to convert JTS geometries to a set of GeoHashes with arbitrary precision (<12).

A GeoHash-based Mallorca discretization looks like:

The smallest geo-hashes are of length 7. Notice that the resulted geo-hash set is optimized, if all children of a certain geo-hash are present in the original set, the children are replaced with the parent.

How to use it?

<dependency>
    <groupId>io.github.adrianulbona</groupId>
    <artifactId>jts-discretizer</artifactId>
    <version>0.1.0</version>
</dependency>

Geometry geometry = ...
DiscretizerFactory factory = new DiscretizerFactoryImpl();
Set<GeoHash> geoHashes = factory.discretizer(geometry).apply(geometry, 7);