[OSM-dev] osm2pgsql for 64-bit IDs

Frederik Ramm frederik at remote.org
Sun Jun 5 15:57:45 BST 2011


Hi,

Anthony wrote:
>> Imagine there's a way with anonymous points and you make a branch off of
>> that. You'd have to convert that node to a "proper" node and split the
>> linestring. We'd end up with a crippled system like "routable shapefiles"
>> where you need an individual linestring for each bit of way between two
>> intersections.
> 
> Why would you split the linestring?

Are you suggesting to have a linestring with anonymous coordinates, but 
some of them can be assigned IDs?

Because if you want a proper topology, the way branching off must 
somehow reference the "node" instead of just the coordinate, else you 
wouldn't know if there's a connection.

> Do you care to elaborate on what the disadvantages would be? 

No, I'm not prepared to discuss them with you.

Bye
Frederik

-- 
Frederik Ramm  ##  eMail frederik at remote.org  ##  N49°00'09" E008°23'33"



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