[Talk-ca] Multipolygon problems

Alan Richards alarobric at gmail.com
Mon Jul 3 04:50:58 UTC 2017


Thanks for a good workflow - I cleared up 8 so far pretty quickly around
Hope, BC. There's a bunch in a cluster around Merritt too. I'm guessing
it's certain imports or import authors vs others that makes the difference.

alarobric

On Sun, Jul 2, 2017 at 3:40 PM, Stewart C. Russell <scruss at gmail.com> wrote:

> On 2017-07-02 04:41 PM, Begin Daniel wrote:
> >
> > However, since the same translator was used for all the polygons, the
> > problem should also appear on water bodies, etc. The problem may have
> > been related to the complexity of the polygons to convert.
>
> Hi Daniel - yes, I'm seeing a bunch of water relations with the same
> problem, such as on the Grand River
> <https://www.openstreetmap.org/relation/576317> and also parts of the
> Speed near Guelph. Some of these data were imported from Canvec 10.
>
> > I also found that JOSM had similar problems with tag transfers a few
> > years ago (1). Maybe some of the problems found result from merging
> > nearby wooded areas?
> >
> > Daniel
> >
> > (1) https://josm.openstreetmap.de/ticket/9832.
>
> Interesting, but I'm seeing a lot of the problem water relations
> worldwide (well, Scotland and Germany) where JOSM wasn't involved. So
> while the JOSM issue might have contributed a little, there were other
> factors in play. Indeed, I've even seen changesets (such as 5735148 from
> Sep 2010) where the editor had to duplicate the relation tag in the
> outer way to get the inner features to render!
>
> cheers,
>  Stewart
>
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