[mkgmap-dev] Address search and index.From Colin Smale colin.smale at xs4all.nl on Wed Feb 16 10:50:32 GMT 2011
> 4) There are such things as cities that span multiple counties (like > London, England for instance). There needs to be rules to allow that, > maybe where the bounding-box for the majority of the county of Middlesex > is required to be entirely outside the bounding box for London, but a > second bounding-box (also flagged as 'county of Middlesex') is placed > inside the bounding-box for London, but a member of a "relation" with > the other Middlesex to prove that they are supposed to be the same. If > the 'relation' was omitted, the auto-checkers would barf because you'd > have two disjoint places called Middlesex inside the same parent > bounding box (England). (You might choose to relax that rule if the two > Middlesex bounding-boxes shared one or more periphery vectors, as they > would here.) > Middlesex is not a county any more, it's a historic county which doesn't have a place in any administrative hierarchy. Same with Berkshire and Avon, for example. A polygon to represent Middlesex doesn't need to bear any relationship to the boundary of Greater London, various London Boroughs, Hertfordshire etc.
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