All posts by Nicholas Duggan FRGS Cgeog (GIS)

The SD Moorfowl lifts a Highball from Loch Striven.

Recovering the Bouncing Bombs

Sidescan sonar helps a hydro survey team and a dive club find and raise the famous bouncing bombs from WWII. (Above: The SD Moorfowl lifts a Highball from Loch Striven.) As of May of 2018, it will be 75 years since the famous German dam buster raid by the Royal Air Force. The raid used...

The Problem with GIS and Augmented, Virtual, and Mixed Reality

Over the last few years, altered realities technology has exploded, and now, with the introduction of Apple’s ARKit and Android’s ARCore, AR, MR, and VR are well within the reach of the non-developer. I can confirm this as I’ve created a few AR apps and MR apps myself over the last few months, with no experience...

heightmap

Making Heightmaps

There is no hiding it: I’ve been building a lot of 3D data recently, partly to sell, partly to fuel my adventures into augmented reality (if you’re interested in me adding this to the blog, please say!). The main vital thing has been the heightmap. Providing Certainty in 3D Heights  What is a heightmap, you...

Southampton Cesium

Add 3D Tiles to Cesium 1.36 to Make 3D Virtual Scenes

As blogs come, this has to be (for me) one of the longest. You see, I’ve been playing with Cesiumjs since its beginning and following the exciting beginnings of the “3D Tile” for the last 3 years. I’ve waited patiently, waiting for the moment I could share with the world how fantastic this new technology...

Multipurpose GIS with ArcGIS Pro

You can now use point clouds and massive geospatial data with GIS through the web and your desktop with new software. Above: London rendered in 3D with London Underground data. For years, point clouds (lidar, laserscan, and multibeam) have been pretty useless to GIS users. When a GIS user had to analyze the data, often...

Dealing with Vertical Datum, the Mariners’ Way

Before 3D GIS, we were able to measure miles below the sea and miles beyond our own atmosphere to a great level of accuracy, so how did we do it? There are a few methods for working between vertical coordinate systems, but the one I want to discuss is possibly the simplest, not always the...