If you are talking about a simple wetland you may find in a small pond or lake, It’s easy, but natural formations are often very messy and complicated - especially when a wetland covers an area larger than most villages.
There is often overlap where I am where a wetland lives permanently in the bottom of a basin, and the surrounding area is a park or sports field. When there is a storm the basin fills up and wetland, pitch, and parking lot end up under 3m of water for a day or so. The wetland is not exclusively part of that structure. The basin or intermittent reservoir consumes everything inside of it. I have 3 basins In my area that are 5KM wide that 363 days a year are wetland, sports complexes, airstrips, parks, etc. then a typhoon hits and fills it with 3m of water for a day or so. The structure of the surrounding area still influences the smaller area, like a river way going through a giant wetland. In a lake, some corner of the lake is often a wetland - yet that wetland is 100% the part of the lake. It should be layered IMO. That could happen for a wetland too, right? Maybe I am looking at it in a wrong way. A multipolygon might be a good solution for some of these pond in wetland situations (like an island in a lake), but won’t there also be some cases with water features where the they truly are 2 things in the same space? Can it always be validated as “wrong?” Javbw > On May 1, 2020, at 3:36 AM, Andy Townsend <ajt1...@gmail.com> wrote: > > >> On 30/04/2020 19:09, Paul Allen wrote: >> On Thu, 30 Apr 2020 at 18:45, Andy Townsend via Tagging >> <tagging@openstreetmap.org> wrote: >> >>> There are always going to be edge cases that aren't easy to categorise. >>> There's an area just up the road from where I am currently that started out >>> as https://www.openstreetmap.org/way/13866095 >> >> That's coming up as deleted 6 years ago by Yorvik Prestigitator. Typo? >> > No - follow the history forward and you'll get to > https://www.openstreetmap.org/way/796675406 . I was doing some tidying up of > the fence, woodland and ditches at > https://www.openstreetmap.org/changeset/84161134#map=19/54.02644/-0.99852 a > few days ago and the object "moved" to a new ID. For convenience it would > have made sense to link to that as well, obviously :) > > Best Regards, > > Andy > > > > _______________________________________________ > Tagging mailing list > Tagging@openstreetmap.org > https://lists.openstreetmap.org/listinfo/tagging
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