[OSM-talk] Mulltipolygons and Mapnik

[Ludwig]

I was just trying to follow the rules from
http://wiki.openstreetmap.org/index.php/Map_Features:

   - Land that exists within another area, such as a lake. (i.e an island).
   Keep water on the right and land on the left side in relation to sequence of
   nodes in the Way. Layering may also be required. See
   Relations/Multipolygon<http://wiki.openstreetmap.org/index.php/Relations/Multipolygon>for
islands in lakes

I agree that the land-tag itself is redundant, so maybe the instructions
should change.

Ludwig

2008/5/23 Dermot McNally <dermotm at gmail.com>:

> 2008/5/23 Ludwig <ludwigbrinckmann at gmail.com>:
> > The holes, at least for my example, are land (so natural=land).
>
> It's not what's causing the problem, but to me that's just incorrect.
> Valid tagging to me could be:
>
> Untagged: It's just a hole in whatever its parent polygon is.
> Tagged water: It's a hole in something that is water, so it identifies
> itself as a "water hole"
>
> To tag it as land _and_ make it part of a multipolygon seems to be a
> double negative.
>
> Dermot
>
> --
> --------------------------------------
> Iren sind menschlich
>
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