[Geocoding] Issue with nominatim in Alameda County California (Berkeley/Oakland)

Sarah Hoffmann lonvia at denofr.de
Sat Jun 15 05:55:21 UTC 2013


Your changes looks good. It's a bit of a special situation were the server
needs more poking to recalculate the addresses outside Alameda. Should be
ok now.

Sarah

On Fri, Jun 14, 2013 at 02:58:54PM -0700, David Chiles wrote:
> I don't know how long it takes changes to get to Nominatim but I made the
> changes to move Alameda (city) to a relation and the problem persists. I
> made the change at Fri, 14 Jun 2013 17:40:00 GMT
> 
> I've done some more poking around to try to figure out what is exactly
> going on and found some strange things.
> 
> These two locations get the wrong address information:
> http://nominatim.openstreetmap.org/details.php?place_id=5983600865
> http://nominatim.openstreetmap.org/details.php?place_id=17444405
> 
> But the Downtown Berkeley BART Station has the correct address:
> http://nominatim.openstreetmap.org/details.php?place_id=5988439343
> 
> The places with the wrong city seem to get attached to the Alameda (city)
> node http://www.openstreetmap.org/browse/node/150942648
> 
> Also some other weirdness in the place page for Berkeley, CA:
> http://nominatim.openstreetmap.org/details.php?place_id=5984546934
> 
> seems to combine Oakland and Berkeley in the map view
> 
> Any ideas what else to try?
> 
> 
> 
> On Fri, Jun 14, 2013 at 10:23 AM, David Chiles <dwalterc at gmail.com> wrote:
> 
> > Thanks. I'll give that a try
> >
> >
> > On Thu, Jun 13, 2013 at 10:34 PM, Sarah Hoffmann <lonvia at denofr.de> wrote:
> >
> >> Hi David,
> >>
> >> On Thu, Jun 13, 2013 at 03:15:48PM -0700, David Chiles wrote:
> >> > I was using the reverse geocoding api to lookup city and streets. It
> >> seems
> >> > no matter where in Alameda County I query it returns Alameda as both the
> >> > county and city.
> >> >
> >> > For example in Downtown Berkeley:
> >> >
> >> http://nominatim.openstreetmap.org/reverse?format=json&lat=37.87173&lon=-122.26842&zoom=18&addressdetails=1
> >> >
> >> > In Downtwon Oakland:
> >> >
> >> http://nominatim.openstreetmap.org/reverse?format=json&lat=37.80408&lon=-122.27028&zoom=18&addressdetails=1
> >> >
> >> > And it seems to work fine in a county and town just to the east:
> >> >
> >> http://nominatim.openstreetmap.org/reverse?format=json&lat=37.87674&lon=-122.17861&zoom=18&addressdetails=1
> >> >
> >> > I don't know where the problem lies. I couldn't find a problem with the
> >> OSM
> >> > relations
> >>
> >> Nominatim gets confused by the tiger:county tag on the streets in the
> >> area.
> >> It ends up prefering anything called Alameda in the address. Ultimately
> >> that is a fault with Nominatim but not one that can be easily fixed.
> >>
> >> You can work around this bug by changing the city boundaries of Alameda
> >> from a way to a boundary relation and adding the Alameda place node as
> >> a label member to that relation. Then it will be automatically taken
> >> out of the addresses.
> >>
> >> Boundary-Way: http://www.openstreetmap.org/browse/way/33083805
> >> Place-Node: http://www.openstreetmap.org/browse/node/150942648
> >>
> >>
> >> Sarah
> >>
> >
> >



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