[Talk-GB] code-point_open accuracy

[Chris Hill]

I maintain an overlay for editors [0] that show the CodePoint Open 
centroids for GB. It needs updating. There are many, many individual 
delivery points that have their own postcode, and many delivery points 
that have a multiple postcodes too. Given that the scheme for devising 
postcodes creates many different layouts I think the idea of adding a 
postal_code to a section of road is generally viable. It is common for 
one side of a road to have a different post code from the opposite side 
of the same road. I only add postcodes as part of an individual address 
addr:postcode=xxxx xxx, where that can be determined from the centroids.

[0] https://codepoint.raggedred.net/

Cheers,
Chris
OSM:chillly

On 16/01/2023 12:35, Jez Nicholson wrote:
> I would welcome some more documentation on 
> https://wiki.openstreetmap.org/wiki/Postal_codes_in_the_United_Kingdom 
> on what is, and isn't, acceptable practice.
>
> I added DaveF's point about 'special' postcodes.
>
> I discovered https://wiki.openstreetmap.org/wiki/Key:postal_code 
> whilst I was there too. It appears to be assigning codes to stretches 
> of road.....is this an outdated artifact, or something that people do 
> and is useful?
>
>
> On Mon, Jan 16, 2023 at 11:50 AM Dave F via Talk-GB 
> <talk-gb at openstreetmap.org> wrote:
>
>     Hi
>
>     Unsure if this was national policy but in my area certain
>     organisations
>     such as banks, medical centres & hotels were given unique post codes,
>     presumably due to the high volume of correspondence they'd
>     receive. Even
>     though many of the properties have change businesses over the years
>     (especially banks becoming eateries) they still retain their
>     individual
>     codes.
>
>     If using the very undetailed code-point_open please don't assume
>     that a
>     restaurant in a large building with unusually high ceilings has
>     the same
>     code as it's neighbours. Local, on the round knowledge usurps the
>     database.
>
>     Cheers
>     DaveF
>
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