On 03.05.2011 10:09, Thomas Davie wrote:
On 3 May 2011, at 08:57, Jaak Laineste wrote:
Hello,
It looks like trivial suggestion, but could not find any past
discussions with quick search.
Is there good reason to add addr:country, addr:county, addr:city and
other regional tags to all the address tags, if OSM database already
has administrative regions for given area? These admin areas already
create implicit relation, which can be used in any application to add
city,country,district,state and other regions. So buildings would have
only addr:street, addr:housenumber (and possibly house:housename and
addr:full tags). Depending on country, addr:postcode could be
geographical also.
Searching a database for a way that surrounds a potentially enormous area (certainly
enormous in the case of country) when you want to find out "what city/country/... is
this in" is *far* less efficient than simply looking at the tags. Plus, Addresses
are not always as straightforward as you make out, it's not possible to tell which
administrative areas should be included in an address by simply looking at which ones
happen to encompass the building.
Bob
_______________________________________________
+1
Look at all current implementations. If the address is not tagged
completly (country, state, city, street) then programs are lost, and
boundaries are too often wrong or incomplete or if someone deletes them
accidentally (or renames them slightly) all data inside the boundary
wouldn't have an address anymore. Plus it takes a lot of computation
time, to put boundary information onto objects inside.
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