[mkgmap-dev] 2 pois for a single polygon/multipolygon

Wed Nov 17 12:34:36 GMT 2010

maning sambale <emmanuel.sambale at gmail.com> writes:

> This way is tagged as a amenity=townhall and a multipolygon relation:
> http://www.openstreetmap.org/browse/way/24159829
> http://www.openstreetmap.org/browse/relation/452620
>
> In my style:
> polygons:
> building=* | man_made=* | amenity=* | tourism=* [0x13 resolution 24]
>
> and in the points:
> amenity=townhall [0x3003 resolution 21]
> building=* [0x6402 resolution 24]
>
> I have the add-pois-areas switch enabled
>
> This resulted to two POI icons (the little PH flag) in garmin
> http://farm2.static.flickr.com/1290/5184379090_bbeeeaffc8_b.jpg

So I think that the relation inherits tags from the outer way, and thus
both the multipolygon and the way get a poi point generated.  I don't
think this is a mkgmap bug.

What if you take the amenity/buiding/name tags off the outer way and put
them on the relation?  I am coming to the tenative conclusion that the
map data is wrong.  Or can you point to the rules for multipolygons and
buildings that say putting the data on an outer way is correct?

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