[Tagging] My "weirdly unnatural aversion to relations"
matkoniecz at tutanota.com
Tue Oct 2 19:13:32 UTC 2018
2. Oct 2018 18:01 by pla16021 at gmail.com <mailto:pla16021 at gmail.com>:
> On Tue, Oct 2, 2018 at 4:39 PM Kevin Kenny <> kevin.b.kenny at gmail.com <mailto:kevin.b.kenny at gmail.com>> > wrote:
>> On Tue, Oct 2, 2018 at 11:15 AM Paul Allen <>> pla16021 at gmail.com <mailto:pla16021 at gmail.com>>> > wrote:
>> >> Why selecting buildings and tagging them to site relation is easier than selecting building and adding them to a multipolygon realation?
>> Are you labouring under the misapprehension that a multipolygon has to
>> have a single outer ring?
> Sorta. As I read it the outer ring is a polygon. That polygon might be composed of several> different ways but together they form an continuous outline.
You may have multiple disjointed outer ways. See for example
that is a park split by a major road.
Or https://www.openstreetmap.org/relation/2226518 <https://www.openstreetmap.org/relation/2226518> - protected area that is not continous.
> Even if a multipolygon can have many disconnected outers, it seems I'd have to make each university> building an outer. And then there are no inners.
Exactly. What you think can be improved to make this misconception less popular?
> an abuse of the concept,
Not at all.
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