[OSM-talk] problems I cant fix

[Maarten Deen]

On 2014-09-08 16:13, Brad Neuhauser wrote:
> Screen full of red is not what you want to see on the OSM Inspector's
> Multipolygon checker! :(

Luckily for me that's not an area that I worked on. And yes: there are a 
lot of incorrect multipolygons. Usually all the nodes are there, but 
just connected incorrectly.
It is a big mess there.

Regards,
Maarten

> http://tools.geofabrik.de/osmi/?view=multipolygon&lon=-89.73150&lat=29.64420&zoom=10&opacity=0.91&overlays=invalid_geometry_hull,duplicate_ways,intersections,intersection_lines,ring_not_closed_hull,ring_not_closed,unconnected_end_nodes,touching_inner_rings_hull,touching_inner_rings,role_mismatch_hull,role_mismatch,duplicate_tags_hull,duplicate_tags,multipolygons_type_is_boundary,type_is_boundary,ways,role_markers,way_end_nodes,way_nodes
> [4]
> 
> On Sun, Sep 7, 2014 at 2:39 PM, Maarten Deen <mdeen at xs4all.nl> wrote:
> 
>> On 2014-09-07 18:59, David Jenne wrote:
>> 
>>> I find it works best if a river’s edges are closed polygons and
>>> tagged as a areas (i.e. “riverbank”) instead of lines. A
>>> riverbank can then assigned to a multipolygon using the
>>> “outer”
>>> role. If using the ID editor to convert lines to areas, you may
>>> have
>>> to type the new tag into a slot under “All Tags”. Any
>>> islands can
>>> be tagged as an “area” and assigned the “inner” role for
>>> the
>>> corresponding riverbank outer polygon. To avoid exceeding the
>>> 2000
>>> node upload limit, several abutting multi-polygons may be needed
>>> along
>>> the length of a river.
>> 
>> What I also see a lot is that an inner way of a multipolygon is
>> untagged and has a second way overlapping it on all nodes which is
>> then tagged with the landuse of that island. This is uncessecary.
>> The renderer is smart enough that you can tag inner ways with the
>> proper landuse.
>> And if 2 ways overlapping is bad enough, I've seen up to 6 ways
>> overlapping!
>> 
>> The number of items I'm deleting while cleaning this up is massive.
>> 
>> Regards,
>> Maarten
>> 
>>> FROM: wouter van der plas [mailto:wouterv.dplas at gmail.com]
>>> SENT: Saturday, September 06, 2014 10:22 AM
>>> TO: talk at openstreetmap.org
>>> SUBJECT: [OSM-talk] problems I cant fix
>>> 
>>> hallo,
>>> 
>>> I was working in the area of new orleans. and i came to this
>>> area:
>>> 
>>> https://www.openstreetmap.org/#map=15/30.2417/-89.8358 [1] [2]
>>> 
>>> and i was missing some rivers that were taged but were not
>>> showing up
>>> on the map.
>>> 
>>> so i found out that there was a broken link in the multie
>>> polygon.
>>> 
>>> i tried to fix it but when went up and down the river there were
>>> more
>>> and more problems.
>>> 
>>> and i tried fixing them all but i just dont have the knolage.
>>> 
>>> so i hope that sombody else can fix them. and that this is the
>>> right
>>> way to handel this problem.
>>> 
>>> thanks in advance,
>>> 
>>> wouter (wvdp)
>>> 
>>> Links:
>>> ------
>>> [1] http://www.openstreetmap.org/#map=15/45.9323/-111.4986 [2]
>>> [2] https://www.openstreetmap.org/#map=15/30.2417/-89.8358 [1]
>>> 
>>> _______________________________________________
>>> talk mailing list
>>> talk at openstreetmap.org
>>> https://lists.openstreetmap.org/listinfo/talk [3]
>> 
>> _______________________________________________
>> talk mailing list
>> talk at openstreetmap.org
>> https://lists.openstreetmap.org/listinfo/talk [3]
> 
> 
> 
> Links:
> ------
> [1] https://www.openstreetmap.org/#map=15/30.2417/-89.8358
> [2] http://www.openstreetmap.org/#map=15/45.9323/-111.4986
> [3] https://lists.openstreetmap.org/listinfo/talk
> [4]
> http://tools.geofabrik.de/osmi/?view=multipolygon&lon=-89.73150&lat=29.64420&zoom=10&opacity=0.91&overlays=invalid_geometry_hull,duplicate_ways,intersections,intersection_lines,ring_not_closed_hull,ring_not_closed,unconnected_end_nodes,touching_inner_rings_hull,touching_inner_rings,role_mismatch_hull,role_mismatch,duplicate_tags_hull,duplicate_tags,multipolygons_type_is_boundary,type_is_boundary,ways,role_markers,way_end_nodes,way_nodes