The OpenStreetMap GB project aims to measure and improve the quality of OSM data in Great Britain, cleaning it up to get rid of silly little data errors, and to make this cleaned up version available in formats that local and central government types are used to. I have been exploring whether I could use the Web Features Service as an easier source for landuse data (see my previous blogs on making a map of London’s green spaces and analysing Southwark’s landuse, which both required a somewhat complicated process to get the data set). In the process I’ve found it’s actually a great way to identify gaps and problems in our data. Browse around the map on the OpenStreetMap homepage and you might think we have an impressive coverage of residential landuse, playing fields and parks. But probe around with the WFS and you can spot all sorts of missing…