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Overpass Turbo to extract trees in a relation

I am trying to extract all "natural=tree in Bergenhus", but there are two relation called Bergenhus nested inside each other (this is how it is suposed to be). The question is how I can get data from within this multipolygon https://www.openstreetmap.org/relation/114938 and not this multipolygon https://www.openstreetmap.org/relation/6492161 with overpass turbo.

overpass-turbo trees

asked 21 Mar '17, 21:31

FredrikLindseth
815●13●24●35
accept rate: 13%

edited 29 Mar '17, 22:00

One Answer:

The simplest thing is probably to set the search area directly to the relation like area(3600114938)->.searchArea;.

Working example here: http://overpass-turbo.eu/s/nGY

There's some information in the Overpass documentation about how OSM ids are mapped to Overpass area ids.

Overpass Turbo uses the public nominatim service to fill in queries like in Bergenhus, so another possibility would be to craft a search there that returned the correct place as the first result. This might be the way to go if you have other similar nested areas to deal with, though I didn't find such a phrase with a few simple tries.

answered 22 Mar '17, 13:33

maxerickson
12.7k●10●83●176
accept rate: 32%

A comment for future viewers: find the ID of the relation (114938 in this case) and add 3600000000 to get to the overpass area ID of 3600114938

(23 Sep '17, 18:27) FredrikLindseth