[Talk-us] Route Tagging Consensus
rwelty at averillpark.net
Mon Oct 25 20:11:47 BST 2010
On 10/25/10 2:58 PM, Emilie Laffray wrote:
> On 25 October 2010 12:49, Mike N. <niceman at att.net
> <mailto:niceman at att.net>> wrote:
> > Multiple is_in=* tags.
> How is this different from the normal argument that is_in is
> obsolete because the object is contained within an admin boundary
> and the applicable is_in can be derived during a geo-query?
> If a polygon exists, the is_in information can be inferred easily
> through a small preprocessing.
it's not small preprocessing if you're trying to do some bulk operation.
computing geometric intersections/containment is no big deal for small
data sets, but scales damn poorly.
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