There is some admin_area data in the NaPTAN import that will be happening soon given that every bus stop is associated with a transport authority (county/unitary authority/Passenger Transport Executive). http://wiki.openstreetmap.org/wiki/NaPTAN
We will be discussing the details of this import on talk-transit and you might like to get involved. Regards, Peter On 15 Feb 2009, at 14:19, Feargal Hogan wrote: > Hi > > First post to the list. > > I've been looking to get access to a set of polygons for the main > English > administrative divisions. I'm not that concerned with the celtic > regions for > the time being. This data <<IS>> available via ONS/OS but with > licencing > restrictions. Better to use/create a free-to-use set, I thought. > > Working on the basis that I needed to create it myself, I took the > list of > schools at http://www.showusabetterway.co.uk/call/data.html#schools > and > matched it against the NPE postcode data. It only managed to geocode > about > 5% of the schools, but it was enough for my next proof-of-concept > step. > Using the data I was able to create voronoi cells for each Local > Education > Authority (well each one that contained at least one postcode in the > NPE > dataset). > > These were not very accurate in most cases, but some data is better > than > none. > > My next step was to see if I could 'help' the voronoi analysis by > excluding > the areas where there was already free boundary polygons available. > This > took me back to OSM. So I extracted the boundary data for England > using > something like > http://osmxapi.hypercube.telascience.org/api/0.5/ > *[boundary=administrative][ > bbox=-4.65,50.1,2,55.4] > and had a good browse through it to see what I was getting. The > 'free-tagging' nature of the OSM data (and this is not a criticism, > just an > observation) means that it is difficult to quantify the quality of > the data, > and also it is difficult to filter the dataset into something > meaningful and > useful, at least for my purposes. > > I figure that I am going to have to do a fair bit of clean-up on > this data > before it is useful to me. What would be a real waste of time would > be for > me to do all the cleanup, and then NOT reflect it back into the OSM > dataset. > Whilst I have done quite a bit of interactive editing using potlatch > and > josm, I haven't done any dataset uploads. > > So my questions are: > 1) How should I approach such a data cleanup operation? and > 2) Are there any agreed data tagging standards for the UK or more > specifically for England? > > Appreciate any comments or suggestions you might have. > Thks > Feargal Hogan > > > _______________________________________________ > Talk-GB mailing list > [email protected] > http://lists.openstreetmap.org/listinfo/talk-gb _______________________________________________ Talk-GB mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk-gb
