> From: Steve Bennett > > On 5/01/2011 3:18 PM, John Smith wrote: > > Perhaps a more generic approach would work, eg waterway=flow_control > > flow_control=weir|sluice_gate|flood_gate|spillway_gate|.... > Yeah something like that would be reasonable. What I'd like to see a lot > more of is planning ahead: coming up with a scheme into which all future > subtags can be slotted. It's very hard to change a tag once it's become > popular. So perhaps: > > waterway=dam (a wall with water on one side) waterway=weir (a wall with > water flowing over the top) waterway=flow_control (an opening through > which water sometimes flows). > flow_control=sluice_gate|flood_gate|spillway_gate|lock_gate... > > Then we get people who know this stuff to try and find exceptions that > don't fit into the above scheme, and redesign it. >
I've been looking into this. How does this sound? waterway=dam and waterway=weir remain unchanged. waterway=flow_control - a device for controlling the flow of water flow_control=sluice_gate|discharge|... sluice_gate: a sluice gate. discharge: A discharge point like http://en.wikipedia.org/wiki/File:Howell-Bunger_valve.jpg The question is, what else would go there? Flood gates don't belong there - that's the *usage* of the gate, not the *type* of gate. _______________________________________________ Tagging mailing list Tagging@openstreetmap.org http://lists.openstreetmap.org/listinfo/tagging
