On Sun, Mar 21, 2010 at 10:24 PM, Mike N. <nice...@att.net> wrote: > In your point b), do you mean that if we did use boundary relations that > there would not be an issue with boundaries and roads being co-mingled and > mis-edited? >
The use of boundary relations doesn't prevent people from mis-editing. I'm not sure what you mean by co-mingling, but I'm sure the use of boundary relations doesn't prevent that either. Are you familiar with boundary relations and how they work? Anything you can do with a single closed way you can do with a boundary relation. So by that fact any mistake or mess you can make with a single closed way can be made with a boundary relation. One of the biggest reasons to use boundary relations has nothing to do with roads. It's the fact that a border is generally shared by multiple boundaries. A single way can be used for a state border, a two different county borders, a city border, and a township border, instead of having 5 duplicate ways (and that's not at all an unique type of situation - it's something that happens all the time at state borders). On Sun, Mar 21, 2010 at 10:28 PM, John Smith <deltafoxtrot...@gmail.com>wrote: > On 22 March 2010 12:24, Mike N. <nice...@att.net> wrote: > > In your point b), do you mean that if we did use boundary relations that > > there would not be an issue with boundaries and roads being co-mingled > and > > mis-edited? > > The problem with this is when boundaries or roads move independent of > each other, such as for road-realignment, the whole thing becomes a > bigger mess. > 1) How so? In the worst case scenario you have an equal-sized mess. Can you give an example? 2) In most cases of road-realignment you generally *want* to move the boundary at the same time you move the road. If a road centerline and a boundary line exactly coincide, it's almost surely because the boundary line is *legally defined* as the road centerline. (If some of the lines coincided by pure coincidence, then you can and should use duplicate lines, but even that doesn't stop you from using a boundary relation.)
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