[OSM-dev] [OSM-talk-nl] conversion AND data

[Jon Burgess]

On Sun, 2007-07-29 at 22:39 +0200, Marc Kessels wrote:
> latest version (v5) is online at http://www.kessels.name/and2osm/
> 
> this one seems to result in a proper output of the data, including all
> waterways and their islands (which were causing problems see mail below
> from Jon). 
> 
> only remaining "urgent" item is that some AND nodes (~800, so about
> 0.05%) have more than one ID. this might give problems for one-way
> streets. have to check whether this is a real problem or not. 
> 
> greetz,
> Marc

It would be good to output only a single node in OSM. Unfortunately I
don't think an object can have the same key twice, so you will not be
able to reference multiple AND ids (unless you do something like
external-ID=AND:1234;5678). Also I was wondering if these ID tags would
be better as 'external-ID:AND=1234'. Any tool looking for AND specific
keys in future might find these easier to find and parse.

The TIGER dataset has the similar issues for node and road aggregation.
Have you checked out what they've been working on to see if any of the
code can be re-used?

They've got to the point of creating .osm files too
http://lists.openstreetmap.org/pipermail/dev/2007-July/005869.html 
but I've not kept up on the details of the conversion process.

	Jon