Chris66 schrieb am 22.02.2011 11:05:
> Indeed the most MPs are tagged like this:
>
> relation: type=multipolygon
> outerway: landuse=forest (example)
> innerway: no-tags (or tags for inner area).
>
> The forest is of course only the area between inner and outer.
This is one of the accepted taggings for a multipolygon.
The other possibility (for the same example) is:
relation: type=multipolygon
landuse=forest (example)
outerway: no-tags (or tags for whole area)
innerway: no-tags (or tags for inner area).
For a render the only way to decide, which tagging scheme is used by the mapper,
is checking the tags in the relation. Is there any tag on the relation beside
the "type=multipolygon", then second scheme is obviously used. If there is no
other tag on the relation, then the first scheme is used.
Everything else should be considered as a data error.
Gruss
Torsten
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