The fifth module of this course deals with access to web services from gvSIG. At this first part we will introduce you to a fundamental concept when we talk about the efficient management of geographic information: … 252 more words
Tags » PostGIS
So you’ve got a table of addresses that need to be matched up with their latitude/longitude coordinates… i.e. you need to geocode some addresses. Most of the time, an online tool is a better choice than running your own geocoder if all you need is a handful of addresses geolocated. 796 more words
For one of my apps, I was responsible for the database, and there were some tricky things with Postgres! This post is part of a tutorial series on how to use Postgres! 703 more words
I have been through 5 days of frustration wading through tutorials for how to make a Tiger geocoder in PostGIS. My complaints, in a nutshell, are that every tutorial is either non-linear or assumes you already know what you’re doing… or both. 2,210 more words
This is a guest post by Chris Kohler @Chriskohler8.
This guide provides step-by-step instructions to produce drive-time isochrones using a single vector shapefile. The method described here involves building a routing network using a single vector shapefile of your roads data within a Virtual Box. 2,702 more words