Geo

Geohash Intro

By Phil Whelan on December 15, 2011

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.

Posted in Geospatial | Tagged clojure, geo, geographic, geohash, geospatial, java, javascript, key-value, location, maps, memcached, nearest neighbour, perl, python, ruby, scala, search | 1 Response

Landsliding Into PostGIS With KML Files

By Phil Whelan on January 5, 2011

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.

Posted in Geospatial, PostGIS, Software Development | Tagged esri shapefile, gdal, geo, geographic, geospatial, gis, homebrew, kml, kmz, landslides, latitude, libkml, longitude, macosx, ogr2ogr, postgis, postgresql, shapefile, shp, sql

Geohash Intro

Landsliding Into PostGIS With KML Files

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