On 8 June 2010 12:22, Liz <ed...@billiau.net> wrote: > When putting long rivers on the map eg Darling, Bidgee, Lachlan > I routinely put the unsurveyed river at layer=-1 > when i actually get there and find whether the road has a bridge, a punt or a > ford to cross the road, then I do some changes to road and river. > > So frequently a body of water will have a layer tag other than zero.
It's useful to set most waterway=drain to be layer=-1 to stop false positives from showing up on keepright when they run under roads and such. To simplify maybe it should be assumed that all waterways are layer=-1 and any tunnels default to layer=-2, that would solve the issue from a preprocessing point of view wouldn't it? _______________________________________________ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au