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Everything about Geohash
Public domain geocoding invented in 2008
Geohash is a public domain geocode system invented in 2008 by Gustavo Niemeyer which encodes a geographic location into a short string of letters and digits. Similar ideas were introduced by G.M. Morton in 1966. It is a hierarchical spatial data structure which subdivides space into buckets of grid shape, which is one of the many applications of what is known as a Z-order curve, and generally space-filling curves. Wikipedia →
🧭 Start here: a 6-step reading path
- Read the overview: GeohashA 5-minute orientation
- Skim a recent paper: Geohash-Based Rapid Query Method of Regional Transactions in Blockchain for Internet of VehiclesInfluential work since 2022
- Read the landmark paper: A Geographic Meshing and Coding Method Based on Adaptive Hilbert-GeohashCited 32 times
- Go sideways: GeocodeA closely related topic
- Go sideways: Address geocodingA closely related topic
📖 Definitions
Noun An alphanumeric encoding of latitude and longitude, based on recursive division of the Earth into smaller and smaller regions.
Verb To encode (a geographic location) in this form.
🏆 Landmark papers (most cited)
A Geographic Meshing and Coding Method Based on Adaptive Hilbert-Geohash
GeohashTile: Vector Geographic Data Display Method Based on Geohash
Rapid retrieval strategy for massive remote sensing metadata based on GeoHash coding
Prediction of Traffic Incident Locations with a Geohash-Based Model Using Machine Learning Algorithms
Geohash coding-powered deep learning network for vessel trajectory prediction using clustered AIS data in maritime Internet of Things industries
User Activity and Trip Recognition using Spatial Positioning System Data by Integrating the Geohash and GIS Approaches
GLPS: A Geohash-Based Location Privacy Protection Scheme
Rapid retrieval strategy for massive remote sensing metadata based on GeoHash coding
🆕 Influential since 2022
Geohash-Based Rapid Query Method of Regional Transactions in Blockchain for Internet of Vehicles
Geohash coding location privacy protection scheme based on entropy weight TOPSIS
"Integrating Location Information as Geohash Codes in Convolutional Neural Network-Based Satellite Image Classification"
LPPS‐AGC: Location Privacy Protection Strategy Based on Alt‐Geohash Coding in Location‐Based Services
Exploring lifestyle patterns from GPS trajectory data: embedding spatio-temporal context information via geohash and POI
📚 Books worth reading
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🔗 Related topics
- Geocode A geocode or geographic identifier (sometimes shortened as geo ID) is a code or unique identifier that represents a geographic entity (location or object)…
- Address geocoding Address geocoding, or simply geocoding, is the process of taking a text-based description of a location, such as an address or the name of a place, and…
- Geohash-36 The Geohash-36 geocode is an open-source compression algorithm for world coordinate data. It was developed as a variation of the OpenPostcode format developed…
- Discrete global grid A discrete global grid (DGG) is a mosaic that covers the entire Earth's surface. Mathematically it is a space partitioning: it consists of a set of non-empty…
- Z-order curve In mathematical analysis and computer science, functions which are Z-order, Lebesgue curve, Morton space-filling curve, Morton order or Morton code map…
- Open Location Code The Open Location Code (OLC) is a geocode based on a system of grids for identifying any place on the Earth. Google's Zürich engineering office developed…
- World Meteorological Organization squares World Meteorological Organization (WMO) squares is a system of geocodes that divides a world map with latitude-longitude gridlines into grid cells of 10°…
- Mapcode The mapcode system is an open-source geocode system consisting of two groups of letters and digits, separated by a dot. It represents a location on the…