[OSM-talk] Bounding box

SteveC steve at asklater.com
Mon Feb 5 12:12:20 GMT 2007



Nick Hill wrote:
> 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.

thanks for the work

> 
> Previously, there was no bounding box limitation for GPX queries and there was 

But... GPX would limit by pages of 5,000 points?

> 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, 
> 
> 
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-- 
have fun,

SteveC steve at asklater.com http://www.asklater.com/steve/




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