[mkgmap-dev] Boundary Lines

Sun Mar 28 15:16:12 BST 2010

On Sun, Mar 28, 2010 at 03:34:58PM +0200, Torsten Leistikow wrote:
> Chris-Hein Lunkhusen schrieb am 28.03.2010 14:22:
> > I don't know how the MP code works, but it should not copy tags
> > like boundary=* to the multipolygon cutting lines.
> 
> They should stop putting the boundaries into multipolygons.

Would it be possible to control the MultiPolygon handler from the
relations style file, something like this:

type=multipolygon & boundary!=* { set mkgmap:multipolygon=1 }

Something like this would allow one to create multipolygons for
administrative areas that are not tagged as type=multipolygon.
Examples: highlighting Russia+Kaliningrad, or highlighting the
province around a city differently from the city.

> The problem is, that the boundaries are tagged as areas (thats the
> meaning of using multipolygons), but they are drawn on the maps as lines
> around the border of the area.

Another problem is (as far as I understand) that it is not possible to
distinguish multipolygon cutting lines from original multipolygon role=*
lines.  The output of the MultiPolygon handler is really areas, not lines.

	Marko