[Talk-GB] Landuse between fences?

[David Woolley]

On 01/01/2020 11:58, Martin Wynne wrote:
> So where is the definitive specification? The only practical way to 
> discover if something is valid seems to be to see how the standard map 
> renders it.

There are a large number of things that are perfectly valid that are nor 
rendered by the standard Mapnik layer.

> 
> If it renders ok, the assumption must be that it is acceptable mapping. 

That pretty much defines tagging for the renderer.  The map isn't any 
two dimensional image, but the actual data from which that image was 
generated.

> Otherwise, why call it the "Standard" map?

Loose terminology, a convenient shorthand.

> 
> It is rather more than a demonstrator, it is used in many places for 
> actual use, see for example:

That's because people make a choice that it is adequate for their 
purpose.  Part of that choice may  be related to not wanting to spend 
time searching for something better, or to use someone else's tile 
server.  (In practice, the site you quote is probably using a snapshot 
of the "standard" style, and not the current version.  They need to 
create their own tiles for fair usage reasons.)

The standard rendering tends to follow, rather than lead, actual usage.