[mkgmap-dev] multipolygon with outer polygon within inner polygons

Fri Feb 12 15:08:30 GMT 2010

Minko schrieb:
> Those borderlines form part of different type of administration regions,
> (countries, provinces, municipalities etc).
> 
> My question is not to understand why they are tagged like that, but how to 
> make them render them well into mapsource. Is there some kind of patch I can try out, 
> and where/how can I apply it?
> Im new regarding patching mkgmap, just using the latest release.

>> Chris wrote:
>> what I don't understand: Why is the complex MP processing
>> for borders necessary while we are (mostly) only interested in
>> the border _lines_ ?

It was only a guess, that the MP processing destroys your borderlines.
Another reason could be that the borders share another way which
is drawn with higher priority so that the borderline is disappearing.

Chris