Hi One specific possibility: I know that at least a handful of people have been deliberately filling out London's buildings, and in un-surveyed areas this is often by tracing building shapes from aerial views. This is motivated by London's "patchy" coverage: areas where mappers live, plus tourist/popular streets, are well-mapped, while other (residential etc) areas sometimes looked blank. Maybe worth checking if the difference you see is due to a specific object type (in particular, building=*).
Best Dan 2017-09-01 12:01 GMT+03:00 De Sabbata, Stefano (Dr.) < s.desabb...@leicester.ac.uk>: > Dear all, > > > > my name is Stefano, and I am a lecturer in geography at the University of > Leicester. Volunteered geographic information and OSM have been one of my > research interests for a few years now. I have also done some very minor > contributions to OSM myself, but never in London and I am not very familiar > with the London OSM community. > > > > As I have been recently looking at some aspects data production and > quality of OSM in London, and I was wondering whether any of you might have > some time to help me out in interpreting some of the data… I have a couple > of maps that can use some local expertise to make sense of them. :) > > > > In particular, I am looking at the relationship between feature density > and number of edits per features (among other things). It looks like there > are areas of London with consistently high density but low average number > of edits per features. I was wondering whether this might be the result of > local projects or mapathons organised by the community? Or might there be > (and most probably there are) other reasons I am overlooking? > > > > If you are interested, please contact me: at s.desabb...@le.ac.uk > > > > All the best, > > Stefano. > > > > > > *Dr Stefano De Sabbata* > > *Lecturer in Quantitative Geography* > > Department of Geography, > > University of Leicester, University Road, Leicester, LE1 7RH, UK > > *t: *+44 (0)116 252 3812 <+44%20116%20252%203812> > > *e:* s.desabb...@le.ac.uk > > *w: *le.ac.uk/departments/geography/people/stefano-de-sabbata > <http://www2.le.ac.uk/departments/geography/people/stefano-de-sabbata> > > *twitter: *@maps4thought <https://twitter.com/maps4thought> > > > > *Research Associate* > > Oxford Internet Institute, University of Oxford > > *oii.ox.ac.uk/people/desabbata <http://oii.ox.ac.uk/people/desabbata>* > > Information Geographies <http://geography.oii.ox.ac.uk/> > > Connectivity, Inclusion, and Inequality <http://cii.oii.ox.ac.uk/> > > > [image: id:77B79125-D80D-4E72-9F70-791C2419DE28@home] > > Follow us on Twitter <https://twitter.com/uniofleicester> or visit our > Facebook <https://www.facebook.com/UniofLeicester/> page > > > > _______________________________________________ > Talk-GB mailing list > Talk-GB@openstreetmap.org > https://lists.openstreetmap.org/listinfo/talk-gb > >
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