[OSM-talk-ie] Estimate of number of building=* in Ireland

[Dave Corley]

The fact that so many buildings are being mapped as building=yes when more
accurate tagging is plainly obvious makes this an utterly frustrating
project.

Saying that others can come along after and correct it is a totally
avoidable requirement by using more appropriate tagging in the first place.
Its also unlike to ever get corrected as evidenced by the volume of data in
Ireland that was created and never improved upon.

The logical approach should be to map it as house/garage/shed etc and ONLY
use building=yes if you cannot make an educated guess.

Doing otherwise puts this data on the level of the tiger import.



On Thu, May 14, 2020 at 1:04 PM Colm Moore <colmmoore72 at hotmail.com> wrote:

> Hi,
>
> Apologies, there was something else I meant to mention.
>
> Some locations have a very low number of building polygons per capita
> (i.e. implying high number of people per building). This may be
> **suggestive** of locations that are under-mapped. This bears out in some
> of suburbs on the Kilkenny side of Waterford city, where there are lots of
> unmappable (tree cover and fuzzy images) garden sheds, etc. There are other
> reasons for this, like apartment buildings, terraced houses mapped as
> building=terrace, etc.
>
> On Wed, 13 May 2020 at 14:38, Donie Kelly <donie.kelly at gmail.com> wrote:
>
> > Don’t buildings have tags? Did I see a residential tag? Is it used in all
> > cases?
>
> Yes, buildings can be given detailed descriptions, e.g. building=house,
> building=apartments. However, about half of the buildings on the island
> just use building=yes. Only saying building=yes gets the building on the
> map quickly, makes them readily findable and lets other mappers fill in
> details later. Not all buildings are readily identifiable from aerial
> images and details like number of storeys can be even harder to determine.
>
> Note that building=residential can be used for buildings that
> are residential, but the type isn't readily identifiable, e.g. I saw some
> semi-detached houses in Kilkenny that were attached back-to-back instead of
> side-to-side.
>
> Interpreting the total number of buildings on the island from the total
> number of, say houses, would be more complicated than comparing number of
> buildings in Kilkenny to the number of buildings on the island.
>
> On Thu, 14 May 2020 11:47:29 Tadeusz Cantwell <t4dc4n at gmail.com> wrote:
>
> > The residential tag should be used for an area not a house.
>
> Yes, landuse=residential should be used for residential sites / estates /
> neighbourhoods. The iD editor now supports additional sub-tags,
> e.g. residential=rural, residential=apartments and residential=halting_site
> You can also add name=* to the likes of housing estates, which can help
> detail the hierarchy of a town.
>
> Colm
>
>
>
> ---------------------------------------------------------------------------------------------------------------
>
>
> _______________________________________________
> Talk-ie mailing list
> Talk-ie at openstreetmap.org
> https://lists.openstreetmap.org/listinfo/talk-ie
>