On 27/07/2010 15:58, Anthony wrote:
On Tue, Jul 27, 2010 at 6:27 AM, David Earl<da...@frankieandshadow.com> wrote:
You cannot tell from our model, without additional information such as a
relation, whether two parallel ways are part of a dual carriageway or just
parallel roads.
What's the difference? Just whether or not they have the same name?
That's not sufficient. You'd have to do some kind of heuristic test to
see whether they were approximately parallel as well, because there are
often bits of the same (named) street elsewhere in the vicinity which
aren't dual carriageway. More complicated geometry that could be solved
by modelling.
But you're right to some extent, so I revise my statement: "You cannot
*easily and accurately* tell from our model..."
David
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