bug in rendering of relation=multipolygon?
http://www.openstreetmap.org/browse/relation/6128 http://www.openstreetmap.org/browse/relation/58910 these 2 relations describe a forest in germany, the forest being the outer polygon, clearings, a quarry and so on the inner ones. the relation istself has (actually had, i corrected it just now) only type=multipolygon and a name. mkgmap renders all the inner polygons, but only some (randomly, can't find a significant difference) are cut out of the surrounding forest. as soon as the relation has a landuse=forest, everything works as expected.
Hi Michael, the OMS wiki tells the important fact about multipolygon tagging (http://wiki.openstreetmap.org/wiki/Multipolygon#Tagging): "If relation is not tagged, the drawing style of outer ways is used." The relation metioned by your were tagged - they had a name tag. So mkgmap uses the tags of the relation for the multipolygon and not the tags of the outer ways. Having only a name tag the outer areas are not included in the compiled map because there is no rule for polygons with a name tag only. WanMil
http://www.openstreetmap.org/browse/relation/6128 http://www.openstreetmap.org/browse/relation/58910
these 2 relations describe a forest in germany, the forest being the outer polygon, clearings, a quarry and so on the inner ones. the relation istself has (actually had, i corrected it just now) only type=multipolygon and a name. mkgmap renders all the inner polygons, but only some (randomly, can't find a significant difference) are cut out of the surrounding forest.
as soon as the relation has a landuse=forest, everything works as expected.
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Ah, I wasn't aware of that. Thanks, Micha Am 31.05.2012 19:53, schrieb WanMil:
Hi Michael,
the OMS wiki tells the important fact about multipolygon tagging (http://wiki.openstreetmap.org/wiki/Multipolygon#Tagging): "If relation is not tagged, the drawing style of outer ways is used."
The relation metioned by your were tagged - they had a name tag. So mkgmap uses the tags of the relation for the multipolygon and not the tags of the outer ways.
Having only a name tag the outer areas are not included in the compiled map because there is no rule for polygons with a name tag only.
WanMil
http://www.openstreetmap.org/browse/relation/6128 http://www.openstreetmap.org/browse/relation/58910
these 2 relations describe a forest in germany, the forest being the outer polygon, clearings, a quarry and so on the inner ones. the relation istself has (actually had, i corrected it just now) only type=multipolygon and a name. mkgmap renders all the inner polygons, but only some (randomly, can't find a significant difference) are cut out of the surrounding forest.
as soon as the relation has a landuse=forest, everything works as expected.
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