geomantic

Last week, I blogged about Open Street Map over on my company’s blog, The Viewshed about Open Street Map and touched briefly on the subject of data quality. I cited the study by Muki Haklay that compares (favorably) the quality of data found in OSM with Ordnance Survey data. More on the subject of OSM data quality is found here on Stefan Knecht’s blog, United Maps. Not a formal study, but a another perspective on OSM, both its successes and it’s current limitations. I find the comparison with Wikipedia to be most illuminating because it shows where the similarities end and where OSM differs from Wikipedia.