[Talk-ca] NRN Fort McMurray area data

Michel Gilbert michcasa at gmail.com
Sun Jan 18 14:58:44 GMT 2009


Steve,

Good work. Your osm file looks great.  I am going to use your work to tackle
the nrn import with FME.

Michel

2009/1/18 Steve Singer <ssinger_pg at sympatico.ca>

> On Sat, 17 Jan 2009, James Ewen wrote:
>
> > As reported previously, sometimes the RoadMatcher is thinking roads
> > that intersect at 90 degrees are a match, and is leaving them out.
> > There are a number of these that I'll have to go back and insert.
>
> This is expected.  When you run roadmatcher on a dataset it divides the
> roads into three categories.  'Matched', 'Standalone' and 'unknown'. The
> unknown ones are roads where roadmatcher is unsure if there is a match or
> not.  I am only importing 'standalone' roads since we seemed to think that
> it was better to leave out the unknowns vs having many duplicate roads.
> It would be nice if it could a better job matching.
>
>
> > Here's where OSM data is going to surpass GeoBase. The question
> > remains though, how to teach the RoadMatcher to recognize that these
> > two circular routes are the same roadway?
>
> In this case RoadMatcher actually did detect that they were the same road,
> that should have been excluded from the output. However there is a bug in
> the exclusion code my geobase2osm.py.
>
> What happened was that road matcher matched part of the road, but it split
> the NRN segment. One part was matched, the other part was standalone.  My
> script incorrectly declared the entire segment as standalone (which is
> incorrect, it should have been excluded from the import).  I've fixed the
> script.
>
> It looks like two geobase road segements suffered from this.
>
> 6972a46cf13841a88c89ff40c49cd498
> 948359a6ff024551aa1a07cec21c818b
>
> I will manually clean this up tomorrow sometime.
>
> Thanks for spotting this.
>
>
> >
> >
> http://www.openstreetmap.org/?lat=56.65477&lon=-111.32785&zoom=17&layers=B000FTF
> >
> > James
> > VE6SRV
> >
> > _______________________________________________
> > Talk-ca mailing list
> > Talk-ca at openstreetmap.org
> > http://lists.openstreetmap.org/listinfo/talk-ca
> >
>
>
> _______________________________________________
> Talk-ca mailing list
> Talk-ca at openstreetmap.org
> http://lists.openstreetmap.org/listinfo/talk-ca
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstreetmap.org/pipermail/talk-ca/attachments/20090118/0ea66a78/attachment.html>


More information about the Talk-ca mailing list