[mkgmap-dev] Name of boundarys

Tue Sep 20 07:02:38 BST 2011

On Tue, Sep 20, Marko Mäkelä wrote:

> On Mon, Sep 19, 2011 at 09:59:29PM +0200, Thorsten Kukuk wrote:
> >On Mon, Sep 19, Marko Mäkelä wrote:
> >>As you both seem to be based in Germany and Germany has good coverage 
> >>of boundary=administrative, do you see a need for the multipolygon 
> >>processing of boundaries?
> >
> >I'm not really sure if I understand you correct. To draw a boundary, 
> >you don't need multipolygon processing of boundaries. But if you want 
> >to know the tags like the name of the boundary, you need the 
> >informations from the multipolygon.
> 
> The built-in processing of multipolygon relations in mkgmap seems to 
> break the copying of boundary names from the boundary relations to the 
> boundary names in the mkgmap default style. You verified this by 
> confirming that adding --ignore-builtin-relations to the mkgmap options 
> will copy the names of all boundaries to the boundary lines.
> 
> As far as I understand, the built-in processing of multipolygons should 
> only be useful when generating polygons (areas). The typical use case of 
> boundaries is to draw boundary lines, not to colour the areas limited by 
> the boundaries. Therefore, it would seem to make sense to implement an 
> option for disabling or enabling the built-in multipolygon processing of 
> boundary relations.

Ok, yes, I think that would make sense.

  Thorsten

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Thorsten Kukuk, Project Manager/Release Manager SLES
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