[Talk-ca] GeoBase and OpenStreetMap

Steve Singer ssinger_pg at sympatico.ca
Wed Dec 17 14:00:22 GMT 2008

On Wed, 17 Dec 2008, Dave Hansen wrote:

> There are several concerns here.  First, as you pointed out, is that we
> have virtually no control over what other users in OSM do.  There are no
> access controls or integrity constraints beyond some very simple ones.
> If we decided to strongly preserve the tiger TLIDs (or their GeoBase
> equivalent), I'm not even sure it would be possible without some serious
> changes to how OSM works.

You could have a monitoring script that looked at diffs and tried to detect 
some of these things and emailed out alerts.  The community could then 
fix (and educate users) as they happen.

> If you really want to track the GeoBase ways after they are imported,
> what about looking at the planet diffs?  You could keep a record of what
> happened to each object as it gets modified by users.  There would be no
> need to match up data because you would know how each piece got there.

What about using relations to store store the geobase id.  Tag each node in 
geobase segment way with a relation that contains the geobase id.  That way 
you can have multiple geobase segments map to a single OSM way.

> -- Dave


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