On 06/09/2010 22:19, Aspen Swartz wrote:
That page covers it well. I find the method of using adjacent closed ways much easier than making a relation between all the sections of riverbank. It's hard to make sure every section of bank is tagged correctly in the relation for a long river. Using closed ways means you can accurately map as much river as you have data or time for and not worry about the rest.
I think relations are only meant to be used when there is an island. Draw a closed way just around that area & convert it to a relation:
http://www.openstreetmap.org/?lat=51.41868&lon=-2.49064&zoom=17&layers=M
If you take care to join the centerline of tributaries to the centerline of the river, then openstreetmap can accurately count how many rivers intersect with this one. I also like to make the river centerline (tagged waterway:river) intersect with the banks where I've ended a section of the closed riverbank way. I can't come up with a logical justification for this, though. It just feels to me like the bank and the river should be hooked to each other in the map, not just by their names. -Aspen (eulochon)
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