[mkgmap-dev] [PATCH v1] LocationHook speedup

Sat Dec 31 11:29:24 GMT 2011

Hello WanMil,

WanMil wrote
> 
> The reason is that the boundaries are not complete. Complete in two 
> meanings:
> 1. Some boundaries are missing due to incomplete OSM data
> 2. In some areas there might be a boundary with admin_level=7, other 
> areas do not have that admin_level. The LocationHook cannot know about 
> that and therefore it can remove elements only if they contain all 
> remaining tags.
> 

ahh, incomplete data always makes things that much more complicated :-(

I also just got to that admin_level=7. In "Saarland",  one of my test cases,
I see 
"Verbandsgemeinde Waldmohr"
http://www.openstreetmap.org/browse/relation/897709
which is the only boundary that has admin_level=7. The interesting thing is:
the returned result-list for this boundary is always empty. So, maybe there
is a cheaper way to detect this first or does it means that there is a bug
in quadtree or the selection of the boundaries?

Gerd

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