[Talk-us] question: relations & divided highways

Jeffrey Ollie jeff at ocjtech.us
Fri Sep 4 15:35:09 BST 2009


On Fri, Sep 4, 2009 at 9:28 AM, Ian Dees<ian.dees at gmail.com> wrote:
> On Fri, Sep 4, 2009 at 9:06 AM, Richard Welty <rwelty at averillpark.net>
> wrote:
>>
>> i've recently finished up a relation for I-90 eastbound from I-481
>> (Syracuse NY) to the NY/MA border.
>>
>> i'm wondering which of the following methods is preferred for the
>> westbound leg:
>>
>> 1) same relation, set role to west
>>
>> 2) different relation for west bound.
>
> I've been using one relation for both directions, but wasn't there a concern
> about the maximum number of items in a relation a while ago? I don't
> remember what we decided after that discussion.

I'd prefer to see both directions as a part of the same relation.  If
there's a problem with the number of items in a relation, what about
creating separate relations for each state and tie them together with
a super-relation?

-- 
Jeff Ollie




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