Hi Folks, Given all of the talk on the osm-talk mailing list about the possibility of losing data if we move to the new licence, I started to wonder just how widespread OS OpenData use is in OSM. I couldn't find a visualisation, so I made one this evening which is visible at http://www.maps.webhop.net/osm_opendata/. Not all zoom levels are rendered yet - it could easily take most of tomorrow to finish the higher zoom levels.
The way I have detected the OS derived data is very crude - basically if 'source' or 'source:name' matches %os%, the element gets highlighted in blue. This means that tags relating to out of copyright OS maps might also be highlighted (I see some 'OS7' tags). Anyway, I thought you might be interested in seeing how widespread the use is - I was very surprised that at low zoom levels, the UK (or rather GB) is covered in blue, but if you zoom in enough you can start to see which towns are 'old mapping' and which contain a lot of tracing from StreetView. I'm not sure what to do with this now - I will work out some statistics for how much of the OSM data includes OS opendata. If anyone can think of a use for it now that I have the database imported, please let me know! Graham. -- Dr. Graham Jones Hartlepool, UK email: grahamjones...@gmail.com
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