In which case, my apologies for misinterpreting, and I completely agree that
duplicated nodes serve no purpose whatsoever.
Gregory
-Original Message-
From: Jochen Topf [mailto:[EMAIL PROTECTED]
Sent: 19 August 2008 09:59
To: Gregory Williams
Cc: dev@openstreetmap.org
Subject: Re: [OSM-dev] Autocorrectable data inconsistency
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: dev@openstreetmap.org
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
dev@openstreetmap.org
http://lists.openstreetmap.org/listinfo/dev
___
dev mailing list
dev@openstreetmap.org
http://lists.openstreetmap.org/listinfo/dev
--
Jochen Topf [EMAIL PROTECTED] http://www.remote.org/jochen/ +49-721-
388298
___
dev mailing list
dev@openstreetmap.org
http://lists.openstreetmap.org/listinfo/dev
