Tag Archives: geodatabase
pdxhash and working with spatial data using sql
Overview After analyzing the data, it would appear that we can use the geohash algorithm to geographically locate things in the Portland area by a short combination of letters and numbers. Because we only care about locations in and around … Continue reading
pdxhash: an implementation of #pdxtags using the geohash algorithm
I never learned about geohashes in school, but I ran across the term when I was figuring out how to do fast GIS operations in the Google App Engine cloud computing platfor Continue reading
bulk loading shapefiles into postgis
Civicapps datasets are made available in a format called a shapefile. ESRI shapefiles are the de facto standard for distributing spatial data, but they can be tricky for those who are new to GIS. Fortunately shapefiles are an open standard with a variety of useful tools available. Continue reading
displaying a google maps api v3 map in a django application with geodjango and postgis
In order to create a Google Maps API v3 map with django templates and views you can use the python modules django.contrib.gis.maps and specifically django.contrib.gis.maps.google. Continue reading
geocoding and spatial database queries using python with django and postgis
Python is an excellent language for developing GIS applications. It’s very easy to create a web service that queries a spatial database and returns a result. Sometimes that sort of thing is called a location based service. They are common … Continue reading