get the sense of what is admin-level good for.

[tagtheworld]

dear community

it took me some time to get the sense of what is admin-level good for.

see here an example:

[out:csv(::id,“name”,::lat,::lon,is_in;false)];
area[“name”=“Berchtesgaden”]->.boundaryarea;
way(area.boundaryarea)[“building”=“church”];
foreach(
node(w)->.n;
.n is_in->.a;
area.a[name][boundary=administrative][admin_level~“^[2-8]$”] → .a;
out center;
convert way ::=::,
::id = id(),
is_in=a.set(“{” + t[“admin_level”] + “:” + t[“name”] + “}”);

out;

);

it gives back the following

202391211 Franziskanerkirche 47.6299550 13.0015825
202391211 Franziskanerkirche {2:Deutschland};{4:Bayern};{5:Oberbayern};{6:Landkreis Berchtesgadener Land};{8:Berchtesgaden}
202457931 Christuskirche 47.6302497 12.9989055
202457931 Christuskirche {2:Deutschland};{4:Bayern};{5:Oberbayern};{6:Landkreis Berchtesgadener Land};{8:Berchtesgaden}
68997185 Stiftskirche St. Peter und Johannes der Täufer 47.6336683 13.0038790
68997185 Stiftskirche St. Peter und Johannes der Täufer {2:Deutschland};{4:Bayern};{5:Oberbayern};{6:Landkreis Berchtesgadener Land};{8:Berchtesgaden}
68997224 Pfarrkirche St. Andreas 47.6341939 13.0040477
68997224 Pfarrkirche St. Andreas {2:Deutschland};{4:Bayern};{5:Oberbayern};{6:Landkreis Berchtesgadener Land};{8:Berchtesgaden}
164286768 47.6436930 13.0202033
164286768 {2:Deutschland};{4:Bayern};{5:Oberbayern};{6:Landkreis Berchtesgadener Land};{8:Berchtesgaden}
164365019 47.6436884 13.0202018
164365019 {2:Deutschland};{4:Bayern};{5:Oberbayern};{6:Landkreis Berchtesgadener Land};{8:Berchtesgaden}
233265517 Maria Gern 47.6531047 13.0026063
233265517 Maria Gern {2:Deutschland};{4:Bayern};{5:Oberbayern};{6:Landkreis Berchtesgadener Land};{8:Berchtesgaden}
122916411 Pfarrkirche Heilige Familie 47.6519825 13.0596445
122916411 Pfarrkirche Heilige Familie {2:Deutschland};{4:Bayern};{5:Oberbayern};{6:Landkreis Berchtesgadener Land};{8:Berchtesgaden}

see more out of it: https://gis.stackexchange.com/questions/237935/listing-churches-with-their-administrative-location-using-overpass

**
Step-by-step explanation how this query works:**

It iterates over each building=church in your area
determines all nodes for each building
find out in which areas those nodes are (this is the actual georeferencing step)
filter out all areas with boundary=administrative and admin_level between 2 and 8 (you can adjust those if needed).
print out the center point of the church building way
generates an artificial element with the same way id and an additional element is_in, which lists all administrative boundaries the church is in.
prints out artificial element
Note that the query returns two ways for each church, one with a center node,

are there more ideas - that we need to know - for understanding the idea of Admin-level

do you have any idea!?

love to hear from you

[jrpear]

Sorry, I’m not quite sure if I’ve entirely understood your question. If you’re just trying to learn more about what the admin_level key means, here’s a couple wiki pages that may be helpful:

https://wiki.openstreetmap.org/wiki/Key:admin_level
https://wiki.openstreetmap.org/wiki/Tag:boundary%3Dadministrative#admin_level.3D.2A_Country_specific_values

Basically the meaning of the value of admin_level depends on which country you’re looking at, and the exact meanings are documented in the second link I provided.