[Talk-us] Boundary Relation and Tagging

[Nathan Edgars II]

On 8/4/2011 7:06 PM, Mike Thompson wrote:
> Here is another, somewhat related, question.  Fort Collins CO is
> represented by two separate relations: 112524 and 253754, neither of
> which matches the 2008 TIGER data that they claim to be derived from,
> although 253754 is a much closer match.  What is going on here?  There
> is only one "Fort Collins, CO" and in my mind it should only be
> represented by one relation in the data.

The TIGER boundary data is a huge mess, and is very rarely precise. We 
probably would have been better off not importing it. As for the two 
relations, it seems that when there are inner ways there will be one 
relation with no tags and outer and inner roles, and another with all 
the ways but no roles. This may be a remnant of the old days before 
multipolygon support was good.