This may help for future routines, if not this one:
nwr[place~"city|town"][capital=yes][admin_level=2]->.Capitals;
.Capitals out center;
in your original you were initially searching *all* of the world's towns
& cities instead of 194 capitals. (OSM appears to be missing one)
It'll need checking but I think all capital cities should be returned as
members in the set of boundary relations with the role of 'admin_centre'.
https://overpass-turbo.eu/s/Lwe
[bbox:{{bbox}}];
rel[boundary=administrative][admin_level=2];
nwr(r:admin_centre);
out center;
You appear to be outputting both boundary relations & ways which seems a
bit pointless
This returns all ways within the relations:
https://overpass-turbo.eu/s/Lwk
[bbox:{{bbox}}];
rel[boundary=administrative][admin_level=2];
way(r._);
out geom;
HTH
DaveF.
On 14/08/2019 09:29, Léo El Amri via talk wrote:
Hi again,
Thanks for the replies
I did several other tries this morning, but it looks like the borders
are too much to handle. Taking your answers into account, rather than
doing thousands of queries on the Overpass API, I think I'll get the
whole Planet file, then use a local tool to get the data (Anyways, in
this context, I only need this info occasionally).
Cordially,
Léo
On 13/08/2019 23:41, Léo El Amri via talk wrote:
Hello,
I'm trying to fetch countries, their borders, and their capitals through
Overpass API, but the server never replies to me (With a timeout:3600
setting, the server reply with a 502 error after a while).
I'm only a beginner with this API, so maybe my request is not efficient:
(
node[place=city];
node[place=town];
)->.a;
rel[boundary=administrative][admin_level=2]->.b;
(
node[place=country];
node.a[capital=yes];
way[boundary=administrative][admin_level=2];
.b;
.b >;
)->.o;
.o out body;
What am I doing wrong ? (Should I use another tool for this purpose ?)
Cordially,
Léo
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