On 01/04/2013 01:14 PM, William Morris wrote: > Hello all, > > After abandoning my fiddling with remotely-sensed building footprints, I > just asked the city of Burlington if they'd allow their building footprint > data to be added to OSM under the ODbL terms. They're perfectly happy to do > so, which means I've got just under 10k structures to import. They are: > > - Foundation-level accurate > - Not overly-node-y > - Somewhat regularly updated since 1979 (there are a few omissions) > > I've conflict-detected the lot of them with the current OSM data - Andrew > Guertin and a few others have already done some tremendous work here, so > none of the new footprints overlap existing features. I've also pored over > the dataset manually and deleted outdated structures - it pays to be a > local. > > Here's the data (7.6MB): > https://www.dropbox.com/s/s5kvaribxlu4rpd/btv_prints.osm > > Please let me know what can be done to reach community standards on this > before importing. > > -Bill
Hi Bill, This is awesome! I found one conflict: the price chopper building on 7 south. I mapped the version in OSM as a relation, which is probably why it escaped detection. I'd love to see a separate file that has just the buildings that did conflict. But mostly just 'cause I want to see whether the ones I mapped are up to par with this set ;) The buildings on UVM that didn't get conflict detected out aren't as good as the ones we're working on internally; not a problem though, I shouldn't have any trouble overwriting them when that project finally unstalls itself. Spatial accuracy seems pretty good w.r.t. bing: most buildings are dead on, some are a few meters off. I'm a bit concerned about the fact that most buildings haven't been orthogonalized--will it look bad once rendered? Poking around, I found a building at 44.4812, -73.1909 that's a triangle but shouldn't be, and a few buildings that don't exist according to bing (garages especially seem to be common). As a local user, though, I definitely don't want this held back just because of those. --Andrew _______________________________________________ Imports mailing list [email protected] http://lists.openstreetmap.org/listinfo/imports
