All posts by Nicholas Duggan FRGS Cgeog (GIS)

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

This entry is part 5 of 8 in the series July 2017You 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...

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...

Surveying a Mile Down

This entry is part 6 of 8 in the series June 2017Above: The metrology viewed as a combined model. A 3D surveying company provides highly detailed lidar data on subsea drill centers. This article almost didn’t happen. I first met with ADUS DeepOcean in January 2017, when we discussed how they had captured high-resolution laser data...

GEO Business 2017

This entry is part 1 of 1 in the series GeobusinessNicholas makes the annual pilgrimage to GEO Business for xyHt This blog is going to start with a short piece about skips. If you are afraid of skips (skips are what you’d call “dumpsters” across the Atlantic), turn away now …. Monday morning and 24...