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I wish to get nodes that belong to a particular city. I tried doing a radius search around the latitude and longitude of the city but that is just an approximation. Moreover the radius varies from one city to another. Is there a good way to do this using Open Street Maps?

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When there is a boundary relation for that city area (like political boundaries) you can use its name for a query via overpass-api or overpass-turbo.

So first find out about any good boundary relation within the OSM data: go to http://nominatim.openstreetmap.org and try to find a boundary relation for your city ... for example type "Buxtehude" in its search box there (Buxtehude is a small city in the north of Germany) ... see the results and its detail links.

With that background knowledge vidit http://overpass-turbo.eu and use its wizard modus: Try "shop=* in Buxtehude" there ... without ""

Thus you can limit any query via overpass-api or overpass-turbo (or even QuickOSM-Plugin in QGIS) to any city area as long as we have boundaries for that in the OSM data.

Please refer to the documentation of overpass-api and overpass turbo at wiki.osm.org

If you get stuck about a boundary is present or not, tell us the name of the city we can use for testing purposes.

Tell us here about success or failure in general.

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    I found another solution to this problem - using area queries. Eg. [out:json]; area[name = "New York"]; node(area)[amenity=bar]; out; However the issue with this is that if I query the following: [out:json]; area[name = "New York"]; ( node(area)[amenity=bar]; node(area)[amenity=restaurant]; ); out; The output includes only the first amenity, i.e. 'bar' even though there's a union. Any ideas? – user53963 Jun 21 '15 at 5:50
  • I can confirm that your last query only returns bars, but no restaurants ... I have no knowledge whether there is an error in that query or a bug in overpass-api ... Tried to enter "amenity=bar or amenity=restaurent in XXX" in overpass-turbo-Wizard and it also gives only the bars and not the restaurants!!! Any experts here?????? – stephan75 Jun 21 '15 at 10:27
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    @stephan75: I think you simply made a typo, it's restaurant, not restaurent. The same user created a new question for this topic: gis.stackexchange.com/questions/151702/… – mmd Jun 21 '15 at 18:38

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