[Tagging] Tagging proposal On Wheels app 3 - Parking spaces for

[Warin]

On 22/5/23 22:46, Marc_marc wrote:
> Le 15.05.23 à 18:47, robin at onwheelsapp.com a écrit :
>> Hi everyone,
>>
>> So if I understand correct most parking spaces are mapped as polygons?
>
> yes
> https://taginfo.openstreetmap.org/tags/amenity=parking_space
>
>> I don't see the problem to add a width and length tag to a 
>> parking_space node,
>
> there is no problem except to be aware that this is the least common 
> schema and the one that gives the least information, and that 
> therefore any contributor can convert a width=A length=B into a 
> surface object having this dimension and which will also give a 
> position of this object in relation to the others (does the parking 
> space touch the neighbouring parking_space, does it touch a kerb, etc)
>
>> because this is more detailed info about the dimensions of a parking 
>> space,
>> that is actually measured by people on site with a measure tape.
>> the polygon data is not accurate enough to really use for our app.
>
> I don't understand this argument despite the fact that to repeat it :
> a node width=A length=B is not more precise than a polygon
> with thoses dimensions


The polygon gives the orientation - could be parallel to the road or at 
some angle.

I prefer the polygon, more trouble to map but you can use imagery to get 
it.

>
>> Are there other apps that add info about parking places as polygons and
>> extract dimension info from the polygon data?
>
> most map style, including osm-carto (the main style on osm.org)
>
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