On Sat, Jun 13, 2009 at 11:34 PM, Steve Singer wrote: > On Sat, 13 Jun 2009, Adam Glauser wrote: > >> I've found a way[1], which appears to have come in with this import, >> but is incorrectly named. I checked out the Geobase website and found >> their viewing tool[2], but I can't see the names for the NRN ways. >> How can I check whether this is, in fact, an error in the NRN data? >> >> Secondly, when I fix it, how should I be changing the import-related >> tags (such as attribution, source, and geobase:*)? > > The RoadNames in Ontario don't come from GeoBase, they come from the > StatsCan data set. I run roadmatcher on the GeoBase and StatsCan data to > try and assign names to GeoBase geometries. The statscan data is known to > have positional issues. > > The only way you can check this is to look at both the StatsCan data and the > GeoBase data together (using something like openjump) > > http://wiki.openstreetmap.org/images/3/32/Brookmill.jpg > > The blue lines are GeoBase roads. > > The green lines are StatsCan roads with the name. [...] > So far this is the first report of a > mismatched name in Ontario,
The Statscan data must be particularly bad there, there are quite a few unnamed ways in that area too. You can see in http://wiki.openstreetmap.org/images/6/6c/Beaverwood.jpg that the Statscan Laurelwood drive diverges significantly from the NRN Laurelwood drive (it is a boulevard, the two parallel blue lines.) I've circled the NRN Laurelwood in red. The blue line with the arrow pointing to it is the NRN Beaverwood, which got incorrectly named Laurelwood. That had really confused me at first. At least I learned how to revert changes and undelete roads with Potlatch :) > if the problem is widespread I can try adjusting > the roadmatcher settings (which would mean fewer matches thus fewer roads > with names). I'll report any other examples I find. > To fix it I would recommened deleting the statscan:rbuid = 3357609 tag and > fixing the name. Done, thanks for pointing me in the right direction. I also fixed Beaverwood. >> >> [1] http://www.openstreetmap.org/browse/way/35515628 >> [2] http://www.geobase.ca/geobase/en/view.do?produit=nrn _______________________________________________ Talk-ca mailing list Talk-ca@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-ca
