OSM does have some administrative boundaries but they are one of the harder things to derive.
Some county boundaries can be obtained from old out-of-copyright maps, but these can and do change over time so it's not an infallable method. Borough boundaries have been derived, by some people, in urban areas from on-the-ground inspection of street furniture (street lights, rubbish bins, manhole covers, whatever) and then extrapolating from there. Ward boundaries are very difficult, I don't know of any general method for capturing these. So, OSM does contain some boundary data, but its not very complete and may not be very accurate. 80n On Fri, Feb 6, 2009 at 8:08 PM, Anthony Cartmell <[email protected]>wrote: > Would it be possible to use data from OpenStreetMap for administrative >> boundaries? >> > > I don't think so, as the definitions are held by Ordnance Survey, who > exercise royalties for displaying the data and anything derived from it. > OpenStreetMap are very careful not to include any OS data in their maps, and > I can't think of a way of drawing administrative boundaries without > referring to OS maps or OS-derived maps. > > Having said that, if the TeleAtlas maps displayed by Google are considered > derived from OS mapping, which they are in practical terms, then any > location data derived from Google Maps (and Multimap, etc.) belongs to the > OS too. Hence anyone using Google maps to publish UK location information is > breaking OS copyright and terms of use. It all gets very complicated and > silly. I'm just happy that the Met Police are still obviously displaying > OS-derived boundaries on their Google Maps crime map [ > http://maps.met.police.uk/]. If they can do it... > > I'm hoping to meet with an OS person soon to discuss the possible licence > requirements for displaying routes on a map, where the routes have been > generated from mapping tools like TrackLogs and Memory Map that use OS base > raster mapping. They seem to want a royalty per "route transaction", but > haven't yet defined what a "route transaction" is in the context of > multi-route slippy zoomable maps. The CTC's routes site served 3.3million > map tiles last year, some tiles containing no OS-derived data, and some > containing many routes derived from OS data. > > > Anthony > -- > www.fonant.com - Quality web sites > > _______________________________________________ > Mailing list [email protected] > Archive, settings, or unsubscribe: > https://secure.mysociety.org/admin/lists/mailman/listinfo/developers-public >
_______________________________________________ Mailing list [email protected] Archive, settings, or unsubscribe: https://secure.mysociety.org/admin/lists/mailman/listinfo/developers-public
