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

Wed Nov 17 15:47:11 GMT 2010

maning sambale schrieb am 17.11.2010 14:36:
> AFAIK, the correct way of tagging is:
> way 1 - amenity=townhall
> way 2 - no tag
> 
> relation
> type=multipolygon
> 
> way 1 = outer
> way 2 = inner
> 
> I'll check other data to verify.

This one of the possible solutions.

Also ok would be
way 1 - no tag
way 2 - no tag

relation
type=multipolygon
amenity=townhall
way 1 = outer
way 2 = inner

In the beginning of multipolygon usage also the following scheme was used, but
is considered faulty now.
way 1 - amenity=townhall
way 2 - amenity=townhall

relation
type=multipolygon
way 1 = outer
way 2 = inner

Such an outdated tagging would result in two icons and should be considered as a
tagging fault.

If one of the first two solutions results in two icons, than the
add-pois-to-areas function of mkgmap does not work correctly in combination with
multipolygons.
(In my point of view the add-pois-to-areas function should be reworked anyway,
to give more control via the style file about which areas should generated which
POIs.)

Gruss
Torsten