On 27/07/2010 00:28, Nathan Edgars II wrote:
On Mon, Jul 26, 2010 at 8:45 AM, Dave F.<dave...@madasafish.com> wrote:
On 26/07/2010 13:35, Nathan Edgars II wrote:
On Mon, Jul 26, 2010 at 8:28 AM, Dave F.<dave...@madasafish.com> wrote:
Layer is used purely as an aid to the renderer to distinguish where two
or
more ways *cross* each other:
Not quite purely - it gives nonredundant spatial information when a
bridge goes over another. Not that this has anything to do with the
layer_change proposal.
"nonredundant spatial information"
What's that when it's at home?
Information about the relationship of two physical objects to each
other that isn't otherwise in the data.
In other words, if you have two bridge=yes ways crossing without an
intersection node, that tells you nothing about which one is the
higher bridge. layer=* adds that information.
That's what I meant. Maybe I should have said 'crosses over'
Cheers
Dave F.
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