All posts by Nicholas Duggan FRGS Cgeog (GIS)

xyz to QGIS

Using OpenStreetMap Basemaps with QGIS 3.0

QGIS 3 is a new wave of open source GIS. Not only is it extremely quick and efficient, allowing you to use almost every type of geospatial data you can throw at it, but it also includes a 3D renderer and ways to export your creations straight to the web. And let’s not forget the...

AIS: Using Shipping Data in GIS

We’ve all been dazzled by those awesome maps that animate ships or aircraft using AIS, as they move in near real time, but how do they work? What magic sits beneath the hood? As luck would have it, whilst working with the offshore wind farm industry I had to do a lot of vessel analysis,...

ArcGIS Pro

Minimum and Maximum Z Values in ArcGIS Pro

In ArcGIS Pro, why are my minimum and maximum Z values wrong, and how do I fix it? Until recently, this isn’t the kind of question you would expect a GIS user to ask. Of late there have been many innovations in the geospatial software world, and the GIS user is now having to come...

No Job Is Too Big or Too Small

Alexandra Grounds, Founder & Director, Grounds Associates, Ltd. Editor’s note: In this year’s Outlook issue, we present trends in geospatial technologies and vision statements from key geospatial industry firms, but we also highlight smaller operations: the agile, tech-savvy, and talented practitioners and their teams. As the need for geospatial data and expertise grows, career paths...

ArcMap Multipatch

Calculating Geometry outside ArcGIS Pro

Let’s be clear: this isn’t a stab at the all-new, singing and dancing Esri software. This post is meant to help those who are using the software on a regular basis but finding issues with using the fields with multipatch data. Recently I’ve been working with calculating volumes of buildings that are multipatch data. For...