On Thu, 28 May 2009, Thomas Wood wrote: > Forwarding this to OSM dev from newbies.
What is the length of his coding ;) Stefan > > > ---------- Forwarded message ---------- > From: Michael Handerek <[email protected]> > Date: 2009/5/28 > Subject: [OSM-newbies] Reverse geo coding > To: "[email protected]" <[email protected]> > > > Hi, > > I am new to osm. I am currently developing a prototype of a reverse geo > coding tool based on a local osm db. The input has to be a > latitude/longitude pair and the output a human readable address. > > I already handled it to extract the street name and postal code of a > lat/long pair using the tags of a nearest-neighbor-node. To do this with > a acceptable query time i use the k-nearest-neighbor algorithm > (http://www.bostongis.com/?content_name=postgis_nearest_neighbor_generic#130). > > Now I have to get at least the country and city name. In order to do > this i see two possibilities. > > 1. Searching for the nearest city node, in order to extract the > information from his tags. > > 2. Creating geometries for each continent, country and city in order to > check if nodes are within. > > May someone know some better method to get the needed information, feel > free to discuss. > > > The 1. possibility, also used by 'Where are they' > (http://wiki.openstreetmap.org/wiki/Where_Are_They), for me, seems to be > imprecise. > > > Regards, > Mic > > _______________________________________________ > newbies mailing list > [email protected] > http://lists.openstreetmap.org/listinfo/newbies > > > > > -- > Regards, > Thomas Wood > (Edgemaster) > > _______________________________________________ > dev mailing list > [email protected] > http://lists.openstreetmap.org/listinfo/dev > _______________________________________________ dev mailing list [email protected] http://lists.openstreetmap.org/listinfo/dev
