You have misinterpreted the topic. Its about having the exact same node several times one after each other in a way.
Jochen On Tue, Aug 19, 2008 at 08:55:06AM +0100, Gregory Williams wrote: > I've only seen this thread partway through, so please tell me if I've > completely misinterpreted the topic. > > As I see it there is a case, at least on a practical level, for storing a > series of nodes along a straight line in a way. Imagine a very long straight > road that crosses multiple z12 tiles. If this were stored in its simplest > geometric form then there wouldn't be nodes within (or potentially in the > extra margin that [EMAIL PROTECTED] downloads) a z12 tile. Therefore the tile > would be rendered as if that road doesn't exist. > > Similarly if somebody working in an editor doesn't download a sufficiently > large area to encompass at least one of the way's nodes then they may get the > impression that the road hasn't yet been entered into OSM's data. That might > even lead to them drawing their own road along the same path! > > Gregory > > > -----Original Message----- > > From: [EMAIL PROTECTED] [mailto:dev- > > [EMAIL PROTECTED] On Behalf Of Jochen Topf > > Sent: 19 August 2008 08:24 > > To: Joachim Zobel > > Cc: [email protected] > > Subject: Re: [OSM-dev] Autocorrectable data inconsistency > > > > On Mon, Aug 18, 2008 at 11:17:53PM +0200, Joachim Zobel wrote: > > > Am Montag, den 18.08.2008, 13:30 +0200 schrieb "Marc Schütz": > > > > Is there actually a valid use case for having the same node > > multiple > > > > times in a row? > > > > > > I don't see any. > > > > > > I could write a script to korrect the existing ones. Do the > > sequence_ids > > > have to be in sequence (which means the ones above need to be shifted > > > down) or does a simple DELETE per dupe do it. > > > > All changes should be done through the API. Do changes on the database > > directly only leads to inconsistencies. The API does not expose the > > sequence number, so the order alone is fine. > > > > Jochen > > -- > > Jochen Topf [EMAIL PROTECTED] http://www.remote.org/jochen/ +49-721- > > 388298 > > > > > > _______________________________________________ > > dev mailing list > > [email protected] > > http://lists.openstreetmap.org/listinfo/dev > > > _______________________________________________ > dev mailing list > [email protected] > http://lists.openstreetmap.org/listinfo/dev > -- Jochen Topf [EMAIL PROTECTED] http://www.remote.org/jochen/ +49-721-388298 _______________________________________________ dev mailing list [email protected] http://lists.openstreetmap.org/listinfo/dev
