[OSM-talk] Edit filtered data

[Roland Olbricht]

Hello everybody,

as proposed now an application for the global bbox feature of
Overpass API v0.7.4:

Edit filtered objects:
http://wiki.openstreetmap.org/wiki/Overpass_API/Language_Guide#Edit_filtered_data

For example, one could check for all shops in Bonn whether they have a 
"wheelmap" tag or not and add the missing tags.

Basically, the global bounding box feature
http://wiki.openstreetmap.org/wiki/Overpass_API/Overpass_QL#Global_Bbox
has two effects:
- The given bounding box will be applied to all subqueries
- The values will be returned in an extra element <em>bounds</em> in the
  beginning of the response.

Thus the two queries

( way[shop=supermarket](50.6,7.0,50.8,7.3);
  >;
  node[shop=supermarket](50.6,7.0,50.8,7.3););
out;

and

[bbox:50.6,7.0,50.8,7.3];
( way[shop=supermarket];
  >;
  node[shop=supermarket];);
out;

are equal.

Cheers,

Roland