Tag: maps

In the past couple of months I’ve been able to combine work and my mapping hobby, working on a web site about air pollution in London. I’m going to be speaking about this at the October geomob meeting. I’m lucky enough to live in one of Europe’s most polluted cities. Air pollution causes more early deaths than obesity and road collisions, and is only bested by smoking. The Mayor published some really good open data on pollution levels, which of course is incomprehensible to ordinary folk. So despite having a sense that it’s not the cleanest city, Londoners don’t know all that much about the problem or how it could be solved. We want to help change that. Our first splash was a map showing the quantities of some major pollutants dropped on sections of roads across the capital, so Londoners could find out – how polluted is my road?…

Read More Mapping dirty London

One of the annoying things about open data is that you often need ninja skills to do anything with it. OpenStreetMap contains a wealth of geodata, but most tools make you jump through several steps involving the command line and all manner of data wrangling just to produce a custom map. Maperitive tries to make it much easier to create nice looking maps. It has been in gestation since late 2007, and is now close to being easy to use. It took me about half an hour of playing around to produce my first nice hiking map of Snowdon, although a problem with NASA’s elevation data led me on a frustrating journey to get Ordnance Survey open data in there to fill the gaps. I also had to work out Maperitive’s settings file for the way features are drawn to make the maps look a little neater and, well, British.…

Read More Making open data maps the almost-easy way