Dermot There are two reasons why your "tag combination ought to be able to render correctly as is" statement is not valid. Firstly - as Thomas pointed out - mapnik likes one feature per way. Secondly - landuse=grass is not rendered at the moment (because of the vast disagreement on the whole landuse/natural/grass thing). What I am guessing you have on the ground is a residential square with a road round the outside and a grassy bit in the middle. There is no way I know of for mapnik to interpret this correctly from a double-tagged single way like this. It would have to be able to draw a line, a road fill, a second line, and then the grass fill. Where these occur in areas I have seen (many grass filled squares in C London) two parallel ways have been used - and yes I know that people are using leisure=park "incorrectly" in order to get them rendered, but probably excusable in London as they are often formal park/recreation areas.
Cheers STEVE Steve Chilton, Learning Support Fellow Manager of e-Learning Academic Development Centre for Learning and Quality Enhancement Middlesex University phone/fax: 020 8411 5355 email: [EMAIL PROTECTED] http://www.mdx.ac.uk/schools/hssc/staff/profiles/technical/chiltons.asp Chair of the Society of Cartographers: http://www.soc.org.uk/ SoC conference 2008: http://www.abdn.ac.uk/cartographers08/ -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Dermot McNally Sent: 28 August 2008 00:49 To: osm Subject: [OSM-talk] Mapnik handling of highways that are also landuse... Folks - with reference to this: http://www.openstreetmap.org/?lat=53.72339&lon=-6.34273&zoom=17&layers=B 00FTF ...which is a section of the Mapnik render of the outcome of the very successful Drogheda Mapping Party in Ireland. Towards the centre of the map, you'll see what is represented as an oval area of residential highway. I can almost see why, but it struck me that it represents unwanted behaviour that could possibly be fixed. What we have here is a closed way of type highway=residential. Importantly, it isn't tagged as an area. It _is_ tagged (the same way) as landuse=grass. So without understanding the internals of Mapnik, it's as though the landuse, which applies at area-level, infects the highway tag and causes it to be considered as an area too. Clearly, I could simply draw a second way through the same nodes, and there are plenty of heated discussions over which approach is the saner. But it feels as though this tag combination ought to be able to render correctly as is. Dermot -- -------------------------------------- Iren sind menschlich _______________________________________________ talk mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk _______________________________________________ talk mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk
