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siiky
2022/03/26
2022/12/28
en
Overpass is an interface used to query OSM data. Overpass Turbo is an Overpass web client you can use to query OSM data, export it, &c.
This is a list of useful queries I've learned over time.
Nodes, ways, or relations last modified by "user name":
nwr(user:"user name")({{bbox}}); out body;
Node, way, or relation amenities modified between 2022-02-04T00:00:00Z and "to-date":
// to-date is optional and defaults to now [diff:"2022-02-04T00:00:00Z","to-date"]; nwr["amenity"]({{bbox}}); out body;
Picnic sites within a 1km radius of restaurants with takeaway:
node[amenity=restaurant][takeaway=yes]({{bbox}}); node(around:1000)[tourism=picnic_site]; out body;
Libraries in Portugal:
nwr["amenity"="library"](area:3600295480); out body; // Or: area(3600295480)->.searchArea; (nwr["amenity"="library"](area.searchArea);); out body; >; out skel qt;
I don't understand the difference between the two yet, but the latter is supposed to be more correct. All I know is that >; makes the query recursive (whatever that means).
Found on StackOverflow an explanation of the area:XXX:
> If the polygon you want to query inside of is an OSM feature, you can also query using an area ID.
>
> Area IDs are generated by the Overpass server to make querying data within existing polygons easier. You can determine the area ID for a way by adding 2400000000 to the way ID and the area ID for a relation by adding 3600000000 to the relation ID (assuming that the way or relation is a valid area feature).
I found Portugal's relation object, which is the relation 295480, and 3600000000+295480=3600295480.
Based on this diary entry by SK53:
[out:json][timeout:2500]; ( nwr["highway"]({{bbox}}); nwr["building"]({{bbox}}); ); (._;>;); out meta; {{style: node { color: #00000000; fill-color: #00000000; } way[@timestamp=~/2022.*/] { color: #313695; fill-color: #313695; } way[@timestamp=~/2021.*/] { color: #4575B4; fill-color: #4575B4; } way[@timestamp=~/2020.*/] { color: #74ADD1; fill-color: #74ADD1; } way[@timestamp=~/2019.*/] { color: #ABD9E9; fill-color: #ABD9E9; } way[@timestamp=~/2018.*/] { color: #E0F3F8; fill-color #E0F3F8; } way[@timestamp=~/2017.*/] { color: #FFFFBF; fill-color: #FFFFBF; } way[@timestamp=~/2016.*/] { color: #FEE090; fill-color: #FEE090; } way[@timestamp=~/2015.*/] { color: #FDAE61; fill-color: #FDAE61; } way[@timestamp=~/2014.*/] { color: #F46D43; fill-color: #F46D43; } way[@timestamp=~/2013.*/] { color: #D73027; fill-color: #D73027; } way[@timestamp=~/2012.*/] { color: #A50026; fill-color: #A50026; } way[@timestamp=~/2011.*/] { color: #A50026; fill-color: #A50026; } way[@timestamp=~/2010.*/] { color: #A50026; fill-color: #A50026; } way[@timestamp=~/200.*/] { color: #A50026; fill-color: #A50026; } }}
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