[Talk-us] Removing duplicates nodes in Iowa/US
In the past few weeks that I've been working with OSM, I've noticed that routing is broken in my area due to duplicate nodes in ways around administrative borders. I have been using the Validator plugin in JOSM to assist with identifying and correcting the duplicate nodes. I have verified that routing is working after removing the duplicate nodes and joining the ways. Now, I would like to create a script that would assist with identifying and correcting the issue. Here's some of the issues that I see with accomplishing this task. 1. I know that there is currently a project that is removing TIGER tags from all nodes in the US. I'm curious to know if possibly this project's scope includes removing duplicate nodes? If so, I would like to know how I can help. 2. I saw a project for removing duplicate nodes in the Massachusetts area. Possibly, I could piggy-back with the folks on that project. If you work on this project and would like to discuss this further, please contact me. 3. Does anyone know where I can find the source code to the validator plugin for JOSM? I was thinking I could take that code and replicate the procedure into my script. 4. I'm curious to know if anyone has any concerns/objections to going through with this task? If there is some other project going on that is working towards this goal, I would appreciate talking with you and seeing what I can do to assist with a common goal. Thanks for your help! -- Travis Rayhons ___ Talk-us mailing list Talk-us@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-us
Re: [Talk-us] Removing duplicates nodes in Iowa/US
> If there is some other project going on that is working towards this > goal, I would appreciate talking with you and seeing what I can do to > assist with a common goal. There is http://funmap.co.uk/cityrouting/dupenodes.html , which detects 924 duplicate nodes in routed highways. I imagine that including all roads which are not on this map would result in many more nodes however. ___ Talk-us mailing list Talk-us@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-us
Re: [Talk-us] Removing duplicates nodes in Iowa/US
On Fri, 2009-08-21 at 08:54 -0500, Travis Rayhons wrote: > 3. Does anyone know where I can find the source code to the validator > plugin for JOSM? I was thinking I could take that code and replicate > the procedure into my script. The code is in SVN: http://svn.openstreetmap.org/applications/editors/josm/plugins/validator/src/org/openstreetmap/josm/plugins/validator/tests/DuplicateNode.java One thing I would encourage you to do is to ensure that nodes are compatible before merging them. I went to some trouble in the original TIGER import to create duplicate nodes for some situations. They're also OK in a number of cases, like where there's an interstate overpass. We may have a single point for the intersection, but we need two nodes since the roads don't actually touch. So, please don't merge *all* duplicate nodes. Check to see, for instance, if they're in different counties. Or, make sure that you're not merging a motorway to a residential street. Sounds like a fun project! -- Dave ___ Talk-us mailing list Talk-us@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-us
