[OSM-talk] NoName

Rory McCann rory at technomancy.org
Tue Sep 16 14:31:16 BST 2008


Erik Johansson wrote:
>  3. specify a derived tag, as with localised names:
> 
>    name:absent=yes
> 
>    disadvantage: might accumulate to a lot of extra tags in the database,
>    but it only needs to be added if there really is uncertainty about
>    the situation.
> 
> So... how about doing T:absent=true? The interpretation of which being:
> tag T is not there in the real world, as opposed to only not there in
> the database.

I think this is the best way. OpenStreetMap is a work in progress. There 
are holes in the data. We need to have some way to specify that the lack 
of tag T is not a flaw. There are some tags that nearly always go 
together, like the names on some roads. We should have a way to mark this.

Rory




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