OpenStreetMap and Ordnance Survey Meridian 2 comparison – 2008 – 2011

In March 2008, I started comparing OpenStreetMap in England to the Ordnance Survey Meridian 2, as a way to evaluate the completeness of OpenStreetMap coverage. The rational behind the comparison is that Meridian 2 represents a generalised geographic dataset that is widely use in national scale spatial analysis. At the time that the study started, … Continue reading OpenStreetMap and Ordnance Survey Meridian 2 comparison – 2008 – 2011

Are SatNavs dangerous?

The Daily Mirror recently put out a summer story on the risks of using SatNavs. While I would question the statistics and the reliability of the information, as it is probably based on a quick phone survey of 2000 people and then extrapolated in some unclear manner, I do think that we need to understand … Continue reading Are SatNavs dangerous?