[OSM-talk] Overpass API / Overpass QL: center (and centroid) function?

[Stefan Keller]

Dear all

Thanks for the help - especially from the french colleagues.
I'm still struggling even with the XML output.
My actual goal is to display the result set of the "Dairy/Cheese
Makers" query in uMap.
When I apply the query below to http://overpass-turbo.osm.ch/ the result is OK
(displayed POIs: 386, Lines: 300, Polygons: 138).

But when I add this URL as remote data to uMap, there are less markers
displayed.
It seems again that there is a problem with the ways/areas:
http://umap.osm.ch/de/map/kasereien_18

You can easily see the difference when comparing to Simon's solution:
Simon actually gave up using overpass within uMap and preprocessed the
data locally:
http://umap.osm.ch/de/map/kasereien_6

--Stefan

[out:xml]
[timeout:25]
;
(
  node["shop"~"dairy"];
  node
    ["name"~"[Kk]äserei|[Cc]häsi|[Ff]romagerie|[Cc]aseificio|[Cc]hascharia"];
  node["produce"~"cheese"];
  node["craft"~"cheese_making"];
);
out meta;
(
  way["shop"~"dairy"];
  way
    ["name"~"[Kk]äserei|[Cc]häsi|[Ff]romagerie|[Cc]aseificio|[Cc]hascharia"];
  way["produce"~"cheese"];
  way["craft"~"cheese_making"];
);
out meta center qt;
(
  ._;
  >;
);
out meta qt;

2014-07-24 19:58 GMT+02:00 mmd <mmd.osm at gmail.com>:
> Pieren wrote
>> On Thu, Jul 24, 2014 at 5:33 PM, Christian Quest
>>> In my last overpass test with the new "out center" feature, it looked
>>> like
>>> it was working only with XML output, not with the JSON (not GeoJSON) one.
>>
>> It's already reported:
>> https://github.com/drolbr/Overpass-API/issues/93
>>
>> Pieren
>
> Right, some of the missing bits for JSON support are already implemented in
> the "out_geom_json" branch. However, Roland hasn't merged this branch into
> the master branch yet.
>
> https://github.com/drolbr/Overpass-API/tree/out_geom_json
>
> Best
> mmd
>
>
>
>
> --
> View this message in context: http://gis.19327.n5.nabble.com/Overpass-API-Overpass-QL-center-and-centroid-function-tp5812491p5812549.html
> Sent from the General Discussion mailing list archive at Nabble.com.
>
> _______________________________________________
> talk mailing list
> talk at openstreetmap.org
> https://lists.openstreetmap.org/listinfo/talk