Category Archives: Cartography

Caretographic Representations

In parts of the world where both man-made and natural catastrophes frequently occur, how are geospatial technologies being used? And for those of us whose jobs are to create maps of construction sites and other built-up areas, how can we responsibly use the same technology to monitor destruction and wreckage? I pondered these tough questions...

Esri UK Conference 2019 Recap

Every year towards the end of May, Esri UK, the UK distributer for Esri software, holds a user conference across the road from Westminster, the home of the UK parliament (when I was there I even got to see Jacob Reese Mogg). It’s held at the QE2 centre, and there are amazing views from the fifth floor which allow...

Hayden’s Survey in 3D

Above image: Hayden’s triangulation survey map is overlaid on a digital elevation model. A GIS project visualizes the fascinating triangulation network created for the historic Hayden survey of Colorado. One of the great surveyors in the American West is undoubtedly Ferdinand Vandeveer Hayden. A physician during the Civil war, he rose to be chief medical...

Who are the “Geo6” and why will this change UK geospatial?

Around the middle of 2017, there was a mumble in the geospatial industry about how the UK government was going to open up more of its geospatial data. There was even an outrageous rumor that Ordnance Survey was going to have to release its multimillion-pound product, Mastermap. Everyone sniggered but watched the news like hawks....

OS Zoomstack – the Gift that Keeps On Giving

On July 17 2018, Ordnance Survey (OS), the United Kingdom’s national mapping agency, released a trial of a product called “OS Zoomstack.” At the time many overlooked it, as Ordnance Survey makes lots of their data over 1:5000 available for free. I have to admit I was one of them.  In August of last year,...

What’s within a 30-minute Walk – Revisited

I recently had reason to be in London for a short meeting and walked past London Bridge, looked at the sky around me, and thought, “I wonder how accurate that map I made last year is?” I was fortunate to have my camera phone with me so that I could take a few pictures. The...