[OSM-dev] Massive building import - thoughts

Marcus Wolschon Marcus at Wolschon.biz
Sat Feb 7 06:40:26 GMT 2009


On Fri, Feb 6, 2009 at 11:29 PM, Frederik Ramm <frederik at remote.org> wrote:
> Hi,
>
> sly (sylvain letuffe) wrote:
>> In france, next to the cadastre's agreement of using their data for OSM, we
>> might soon be able to import something like 60% of France's builings.
>
> Assuming that most houses will have 4 nodes, you're talking about
> importing roughly 10 million ways and 40 million nodes.

I am not sure if this assumption is correct,
thinking that most houses are in cities where
2 houses join a wall and thus we get a ratio of 2:1 instead of 4:1 .

Marcus




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