[Geocoding] Does Nominatim need all OSM data to be efficient ?

[Sarah Hoffmann]

On Thu, Apr 05, 2012 at 10:26:04AM +0200, Michal Palenik wrote:
> and what about style file?
> 
> http://wiki.openstreetmap.org/wiki/Osm2pgsql#Import_style
> 
> and --style command line switch

The style file is ignored for the Nominatim import. All tag selection
is hard-coded in split_tags() because Nominatim needs more 
sophisticated preprocessing.

Sarah


> michal
> On Wed, Apr 04, 2012 at 08:29:10PM +0200, Sarah Hoffmann wrote:
> > On Mon, Apr 02, 2012 at 02:28:20PM +0200, Charles DESNEUF wrote:
> > > Hi all !
> > > I tried to install my own Nominatim server and I have some issues with the
> > > responses it returns. I need to run a reverse geocoding service which is
> > > able to return information such as country code, state/region and
> > > locality(city, town,...) but nothing more specific.
> > > I have created a new osm file using osmosis, from last-week planet file,
> > > with a the tag-filter option to get only elements(nodes and ways) with tags
> > > boundary, border_type and place and imported it using Nominatim setup
> > > script.
> > > While I was running some tests, I noticed some errors in Nominatim
> > > response(Moscou with US country code, bad state in Rennes, France(Pays de
> > > la Loire instead of Bretagne, ...).
> > > Of course, the Nominatim instance running on Poldi returns valid
> > > information.
> > > Does Nominatim need all OSM data (streets, ...) to be efficient or did I
> > > miss something (a tag ?) ?
> 
> -- 
> michal palenik
> www.freemap.sk
> http://wiki.freemap.sk