[OSM-dev] Funny Numbers
jburgess777 at googlemail.com
Wed Mar 7 20:43:38 GMT 2007
On Wed, 2007-03-07 at 20:40 +0000, Jon Burgess wrote:
> On Wed, 2007-03-07 at 17:32 +0100, Frederik Ramm wrote:
> > Hi,
> > > Are the node references unique? i.e. how does this handle multiple
> > > segments connecting to one node?
> > It's a perl hash and the number is sclar(keys(...)), so it should
> > count the right thing.
> > > I think it's technically possible that nodes get deleted without the
> > > joined segment to be deleted, but I doubt that it has happened in that
> > > order of magnitude.
> > Isn't that something that our "planet-to-database" folks should
> > encounter regularly? I'll modify the script to dump a list of nodes
> > it thinks are dangling references and post it to the list... er,
> > maybe better put them in a file for download ;-)
> For osm2pgsql the answer is to ignore the object if it refers to
> something which does not exist. The current does not keep count of how
> often this occurs but it could be done quite easily.
> I think svn.openstreetmap.org/utils/sanitize/sanitize.pl may provide
> some useful stats about bad data in the planet.osm.
Actually, utils/planet.osm/perl/check_osm.pl was what I was thinking of.
More information about the dev