[OSM-talk] Overpass area query gives results outside area...

[Jean-Marc Liotier]

On 06/11/2013 15:12, Jean-Marc Liotier wrote:
> But why is 3600000000 the magic number ?

I find in my notes that I had also tried using that magic numbered 
identifier. For example, http://overpass-turbo.eu/s/1qn :

     area[name="Dakar"](area:3600192775);
     out;

The area selection does not work, whereas http://overpass-turbo.eu/s/1qo :

     node [name="Dakar"]
     (area:3600192775);
     out;

Works. So it may not just a problem with the identifier... Intersecting 
with an area works for nodes, ways and relations but may not work well 
for areas. Should I stick with just nodes, ways and relations for now ?

Here is the sort of thing I'm actually doing: http://overpass-turbo.eu/s/1qp

     (
         node [name="Fatick"](area:3600192775);<;
         way [name="Fatick"](area:3600192775);<;
         rel [name="Fatick"](area:3600192775);<;
         area [name="Fatick"](area:3600192775);<;
     );
     out;

It works well, as far as I can tell - even for areas... But then there 
may not be other areas named 'Fatick' elsewhere in the world. More tests 
needed maybe ?

Anyway how overpass-turbo serves such queries so quickly is a complete 
mystery to me... What a wonderful service !

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