Geohashr

Geohash is a latitude/longitude geocoding system. It is a hierarchical spatial data structure which subdivides space into buckets of grid shape.

Here is some information regarding the precision/length of the geohash string:

Precision | Size | Rough Size | Width (tiles) | Height (tiles) | Approx # Tiles ---|---|---|---|---|---|---|--- 1 | 5003 km (3109 mi) | Continent | 8 | 4 | 32 2 | 625 km (388 mi) | US State; Small country | 32 | 32 | 1k 3 | 123 km (76 mi) | US County | 256 | 128 | 32k 4 | 19 km (12 mi) | City | 1024 | 1024 | 1.04m 5 | 3.8 km (2 mi) | US Postal Code | 8192 | 4096 | 33.55m 6 | 610 m (2001 ft) | Neighborhood | 32768 | 32768 | 1.074b 7 | 118 m (387 ft) | Street | 262144 | 1310762 | 34.36b 8 | 19 m (62 ft) | House / Office | 1048576 | 1048576 | 1.09t 9 | 3.7 m (12 ft) | Room | 8388608 | 4194304 | 35.18t 10 | 0.6 m (2 ft) | Desk | 33554432 | 33554432 | 1.12quadrillion

• Geohash (slides)
• Geohash in mapping applications (slides)
• Geohash intro (blog post)
• Geohash explorer
• Another geohash explorer
• Geohash Wikipedia page

If you'd like to contribute, that's awesome. There's a guide to contributing (both code and general help) over in CONTRIBUTING.md

To see what has changed in recent versions, see the CHANGELOG.md.

Copyright 2014 JohnnyT

Licensed under the MIT License