[Tagging] Barrier=berm

[Andy Townsend]

On 28/11/2019 11:42, Paul Allen wrote:
> On Thu, 28 Nov 2019 at 10:56, Andy Townsend <ajt1047 at gmail.com 
> <mailto:ajt1047 at gmail.com>> wrote:
>
>     OSM Carto, as far as I'm aware
>
>       * Doesn't have a concept of 2-sided embankments or a rendering
>         for them
>
> Does it need such a concept?  I haven't tried it when the embankment 
> resembles an
> arete, but for an embankment with a plateau all that is needed is two 
> embankments
> delineating the plateau.

Tagging 2 things to represent 1 physical feature just makes it 
extra-hard for anyone consuming the data.  They'd have to say "OK, I've 
got a man_made=embankment here; now, before I decide what to do with it, 
I have to see if there is another parallel one facing the other way that 
tells me that what I've really got is a raised flood bank or similar"

We represent other linear features (e.g. roads) as lines; it makes sense 
to do the same here.

Best Regards,

Andy

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