[Talk-GB] What is a residential area?

[Dave F]

On 07/05/2019 14:38, David Woolley wrote:
> On 07/05/2019 13:30, Martin Wynne wrote:
>> This idea of primary and secondary tags is new to me. There is no 
>> such distinction in the iD editor -- all applied tags are simply 
>> listed in alphabetical order.
>
> Things like name, height, and colour are normally considered secondary.

Yes. Think of them as 'adjective' tags

>
> Things like landuse, building and leisure are considered primary.
>
> Generally if you don't have a primary tag, the object won't get 
> rendered.  If you have more than one primary tag, it becomes difficult 
> for renderer to choose how to interpret the object. However, if there 
> is no great conflict, it is sometimes acceptable to combine, primary tags.

Indeed. If it's a polygon object It often comes down to whether it needs 
to be rendered with a fill pattern. For example, a landuse=farmland 
polygon should be able to render with an added barrier=hedge, but as 
soon as the standard rendering, OSM-Carto, finds a primary tag it 
assumes it's the only one & stops looking for alternatives.


>
>
> Often combining primary tags indicates that you are oversimplifying, 
> e.g. it is common to have both shop and building, but that is probably 
> wrong, because the shop often doesn't occupy the whole building. 
> Similarly a pub may really be the gardens, as well as the building.

If a pub has external land other than the building itself a similar 
schema to 'schools' should be used: draw an enclosing polygon around the 
extent of the grounds & tag it with amenity=pub & any other details such 
as name, address, website etc. All other areas parking, garden etc 
should be mapped with the boundary The actual buildings should only be 
tagged with building=yes/pub.