[OSM-talk] House numbers... One more suggestion

Marc Schütz schuetzm at gmx.net
Mon Jul 28 20:12:04 BST 2008


Am Montag, 28. Juli 2008 20:37 schrieb Karl Newman:
> It's not "a bit more difficult", it's a huge burden. It means you presume
> the data consumer has to be working from a database that contains the
> entire area you're interested in (maybe the planet?).

You can safely assume that a house is almost never more than 200m away from 
its street. In the cases where it is, you can use the otherwise optional 
relation, or for disambiguation (e.g. houses near road crossings) the street 
name.

> Your suggestion 
> demands random access to the entire dataset and thus precludes using
> pipeline tools such as Osmosis.
>

I don't see how relations would change that. You'd have to read in all 
relations first, and then cache all objects referenced by the relations, to 
process them later on. For an area with complete house-numbering this is 
probably not better than keeping all relevant ways in memory (or, in a 
database).

Regards, Marc
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