Geohashing is a simple way to encode latitude and longitude and grouping nearby points on the globe with varying resolutions. It was created by Gustavo Niemeyer. This blog post looks at how it's implemented any why it is such an elegant solution for encoding and managing location-based data.
In this post I will show, in repeatable steps, how to install PostGIS, load in geospatial data found in a KML file and run queries against that data. The focus of this geospatial data will be landslides and our resulting database will allow us to query, using longitude and latitude co-ordinates, the landslide status of a specific geographical point.