Muki Haklay of the Department of Civil, Environmental & Geomatic Engineering at University College London has been working on an evaluation of OSM for some time and has just yesterday released his report (http://povesham.wordpress.com/2008/08/07/osm-quality-evaluation/). The bulk of Muki's paper compares OSM data to an OS Meridien dataset, the headline statistics are that 80% of OSM UK motorways overlap those in the OS dataset and that OSM has good coverage in 25% of the total land area of England. This indicates a long way to go, but as he concludes it is a long way to come in such a short period of time.
The report goes on to analyse the number of contributors to OSM and finds that 92 users contributed 80% of the data in England. He also produces some figures of on the number of editors for 1km squares throughout England and finds that 50% of the land area has been contributed by a single user. The report is very definitely worth reading and can be found on Muki's blog http://povesham.wordpress.com/2008/08/07/osm-quality-evaluation/ Ed _______________________________________________ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
