[mkgmap-dev] Commit: r3573: admin_centre-v1.patch: avoid to create duplicate POI

Wed May 13 10:55:34 BST 2015

Hi Minko,

ahh, yes, I assume that you still get two different POI,
one for London, one for England, but they are at the same place.
This is probably not what we want?

I'll have a look at your data later if that explanation doesn't work out.

Gerd

> Date: Wed, 13 May 2015 11:35:36 +0200
> From: ligfietser at online.nl
> To: mkgmap-dev at lists.mkgmap.org.uk
> Subject: Re: [mkgmap-dev] Commit: r3573: admin_centre-v1.patch: avoid to create	duplicate POI
> 
> Hi Gerd,
> 
> There is something weird happening with this version r3573, maybe a bug or maybe a fault in my styles?
> The name of London disappears and becomes England, http://www.openstreetmap.org/relation/58447  
> I see the same for Edinburgh which becomes Scotland. 
> Any idea what went wrong here? How can I get the name of England not at the node of London (=admin_centre) but in the middle of the country / relation? With mkgmap-r3487 it was still ok.
> 
> See http://mijndev.openstreetmap.nl/~ligfietser/test/ for my styles and the tiles around London.
> 
> 
> 
> 
> 
> 
> > Version mkgmap-r3573 was committed by gerd on Sun, 10 May 2015
> > 
> > admin_centre-v1.patch: avoid to create duplicate POI
> > 
> > It implements the following:
> > When POIGeneratorHook creates a POI for a type=boundary relation
> > with boundary=administrative it searches for a role=admin_centre member
> > in that relation.
> > If one is found, the generated POI will use the coordinates of this member.
> > 
> > I see no easy way to compare the tags of the existing
> > node with those of the generated POI, so
> > as a second step, StyledConverter detects when a POI
> > with the same type and name (or empty name) is created at the
> > same Garmin coordinates (after style processing)
> > If that is true, the latter one is ignored and an info message is logged.
> > 
> > Maybe for certain types this should be changed to check for a radius
> > rather than equality, but that would require complex configuration.
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