Tags » PostGIS

GIS applied to Municipality Management: Module 5.1 ‘Web services (Introduction to SDI)'

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

GvSIG Desktop

Batch Geocoding with 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


Part 3: How to Install and Use PostGIS with Postgres via pgAdmin 4

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

Windows 10

How to make a PostGIS TIGER Geocoder in Less than 5 Days

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


Movement data in GIS #10: open tools for AIS tracks from MarineCadastre.gov

MarineCadastre.gov is a great source for AIS data along the US coast. Their data formats and tools though are less open. Luckily, GDAL – and therefore QGIS – can… 495 more words


Shapefile, the vinyl of geo

So I made this t-shirt to celebrate my love for the shapefile — the vinyl of geo. I was promptly labeled a luddite.

I am not a luddite. 181 more words


Drive-time Isochrones from a single Shapefile using QGIS, PostGIS, and Pgrouting

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