[OSM-dev] duplicate segments

[Jon Burgess]

On Sun, 2007-02-11 at 11:11 +0000, Artem Pavlenko wrote:
> Hello ,
> 
> As a attempt to imporove text labels rendering on OSM I was looking at the 
> original data and I found _lots_ of cases like this:
> 
>  <?xml version="1.0" encoding="UTF-8"?>
> <osm version="0.3" generator="OpenStreetMap server">
>   <way id="4253585" timestamp="2007-01-27 15:00:40">
>     <seg id="21468107"/>
>     <seg id="21468110"/>
>     <seg id="21468110"/>
>     <tag k="highway" v="unclassified"/>
>     <tag k="created_by" v="YahooApplet 1.0"/>
>     <tag k="name" v="Southampton Place"/>
>   </way>
> </osm>
> 
> Note there are duplicate segments. I was trying to use JOSM to fix this but in 
> JOSM I can only see two segments for this particular way. 
> 
> What is the best way to fix this? 
> Can we have some constraint on master OSM database to ensure ways don't have 
> duplicate segments? Can OSM editors (prior uploading) check this? 
> 

As a workaround, osm2pgsql could discard any duplicate segments in a way
fairly easily.

	Jon