[OSM-talk] Duplicate nodes generally

Nic Roets nroets at gmail.com
Mon Aug 30 13:32:00 BST 2010


On Mon, Aug 30, 2010 at 2:10 PM, Brendan Morley <morb.gis at beagle.com.au>wrote:

> On a similar topic...
>
> What is the problem with duplicate nodes, exactly?
>

They are created when you import data from a source that does not use our
way-node model, esp. when the import is done in stages, e.g. at the borders
of US counties. And the problem is that you can't route over them.

Or you are not supposed to route over them. My routing engine merge those
nodes during the "compile" phase and then does route over them.
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