Last night OpenHeatMap creator Pete Warden announced that the tool now allowed you to visualise UK data. I’ve been gleefully playing with the heat-mapping tool today and thought I’d share some pointers on visualising data on a map.

This is not a tutorial for OpenHeatMap – Pete’s done a great job of that himself (video below) – but rather an outline of the steps to get some map-ready data in the first place. Continue reading →