[Tagging] tagging the multipolygon model (was landuse and military)

Pieren pieren3 at gmail.com
Sat Oct 17 10:31:39 BST 2009


On Sat, Oct 17, 2009 at 10:51 AM, Martin Koppenhoefer
<dieterdreist at gmail.com> wrote:
>
> http://www.openstreetmap.org/?lat=52.4749&lon=13.4858&zoom=14&layers=B000FTF
>

I see on this place that sometimes the multipolygon relation is used
for two landuses (forest and recreation_ground) and sometimes not
(forest and brownfield). Just because Mapnik is rendering them in the
right order (the forest and the brownfield). But this is tagging for
current Mapnik styles which is wrong.

> It is possible to have a quarry that became landfill and now is covered by forest.

As you say, it's not at the same time a quarry, a landfill and a
forest. Of course, we can tag what it was 20 years or 20 centuries
ago. And most of landuse values are exclusive. "military" area is the
most controversal. A military area can be also overlapping the see.
That's why the idea to move it from landuse to a boundary is not so
bad.

Pieren




More information about the Tagging mailing list