[OSM-talk] Bounding box

Nick Hill nick at nickhill.co.uk
Mon Feb 5 11:42:43 GMT 2007


The amount of data returned through a bounding box depends on the density of 
data on the map in the area.

Following analysis of DB queries, we now have the following limitations (some 
tightened, some relaxed):

bbox for GPX or OSM data queries: 0.3 degrees squared
Maximum nodes for OSM queries: 50,000.

Previously, there was no bounding box limitation for GPX queries and there was 
no node number limitation. However, the bbox for OSM queries was 0.06 degrees sq 
so that has been relaxed substantially. These changes shouldn't affect most OSM 
mappers, but will prevent newbies from tying up the database with damaging 
queries they probably didn't mean to send.

With regards the timing out, I hope those problems have been fixed by the new 
limits. The db load certainly appears much lighter, and the system should again 
  be providing excellent performance.

lewispusey wrote:
> Current bounding box of 2.5 K is pretty small and is timing out, 





More information about the talk mailing list