[OSM-talk] obsolete TIGER-tags

[Josh Doe]

On Tue, Nov 20, 2012 at 10:14 AM, Brian DeRocher <brian at derocher.org> wrote:

> I feel it's important to maintain at least some reference to the TIGER
> edge it came from.  The edge has details like lfromadd, ltoadd, rfromaddd
> and rtoadd.  These are the "house" numbers on the left and right sides of
> the street.
>

The majority of users disregard the tlid, or for that matter any of the
tiger tags. Thus as ways are split to add detail (e.g., varying speed
limits, bridges) the identifier at best does not propagate to the
appropriate ways and at worst the identifiers no longer even match.


> This was useful to me as i connected Nomintatim to TIGER edges in order to
> interpolate a houses position along the road based on the house number.


Because of the above, the only robust way to do what you're talking about
is to match ways with TIGER edges based on geometry and names, which is
unfortunately much harder than simple tlid matching.

-Josh
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