[Tagging] Proposal for a study about tagging "suitability"

Roo roo_carey at yahoo.com
Wed Aug 22 23:35:28 BST 2012

On 22 Aug 2012, at 11:01, Pieren <pieren3 at gmail.com> wrote:

> In recent times, I've noticed few tags that are massively incorrectly
> used in OSM with the help of taginfo.
> Two examples :
> "designation" : 31000 values for 111000 objects ([1])
> "location" : 7300 values for 31000 objects ([2])
> Of course, some keys are per se multivaluable, like "source", "fixme",
> "comment" or "note". Most of the other keys are wikied with a list of
> values which can be very long but cannot be closed by definition (e.g.
> "amenity", "landuse", etc). But we have a category of keys where the
> list of values is limited by definition like "oneway" or "tunnel".
> Some QA tools even reports "unknown" values as "errors" or at least
> "warnings" for them.
> I think it would be interesting to study the ratio values/instances
> for the last category. When it is exceeding a ratio 'x', it is
> indicating that the tag failed on its job either because one of the
> OSM editor is using it incorrectly (P2 presets for "designation") or
> simply because it is not enough self-explanatory ("location").
> Any thought, comments ?
> Pieren
> [1] http://taginfo.openstreetmap.org/keys/designation
> [2] http://taginfo.openstreetmap.org/keys/location
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