Hi David
I produce a map from Geofabrik Ireland file. I discovered that Saint Stephen's Green park in the Dublin city center is not well rendered (in the past it was OK). It looks like a polygon on OpenStreetMap.org but if you take a look in data, it is both a barrier=fence (rendered with the undefined polyline type 0x33) and a leisure=park (polygon type 0x17). How can I force to render the park at least as a polygon and not only like undefined polyline ( without removing the barrier rule in lines style) ?
NB : if I remove manually the tag "barrier", the polygon is well rendered. Does it mean I found a bug or does it mean data should not be defined both like polyline and polygon in OSM ?
Currently lines have priority over polygons, so what you are seeing is to be expected given the data. We could reverse this, but that may introduce the opposite problem. I wouldn't use the same way for two different things, but If that is what people do commonly then I guess we will have to try and deal with it. It is a similar problem the boundary and road problem that was discussed a while ago. Currently the polygon and line rules are not kept separately, but I suppose I could separate them and run against them both. Its a bit of a waste for something that will be fairly rare though. ..Steve