[Potlatch-dev] [OpenStreetMap] #4539: Endpoints of node networks are incorrectly detected

[OpenStreetMap]

#4539: Endpoints of node networks are incorrectly detected
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 Reporter:  JDub                     |       Owner:  potlatch-dev@…                
     Type:  defect                   |      Status:  new                           
 Priority:  minor                    |   Milestone:                                
Component:  potlatch2                |     Version:                                
 Keywords:  rcn, node, display name  |  
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Changes (by Polyglot):

 * cc: Polyglot (added)


Comment:

 Those rcn and rwn relations are being meticulously entered. So I would be
 very surprised if it where a data error. I also ran my QC script on the
 rcn route relations 2 days ago. They are all correct.

 I think Jw found the cause of the many routes shown as xx- or -yy. The
 data of the other side of the relation isn't loaded yet.

 What should really be done to determine what should be displayed is to
 load the relation. Take the first and the last way of the route relation
 and find the rwn_ref or rcn_ref of their nodes, of course rwn for rwn
 routes and rcn for rcn routes. There are also rhn routes with numbered
 nodes, BTW. Not many yet, but they do exist.

 If the previous algorithm produces 2 numbers, you are done. If not, more
 ways should be investigated, as there is some funny stuff going on in rcn
 relations. (Having to do with routes that end on 'cycle network nodes'
 that need to be represented by more than 1 OSM node, on different sides of
 a street/canal/roundabout/etc). This will only occur if those ways have
 forward or backward roles.

 I hope this helps to resolve the issues.

 Kind regards,

 Jo

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Ticket URL: <https://trac.openstreetmap.org/ticket/4539#comment:1>
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