David, thanks for offering some updates.
By the way, I am not asking questions because I personally want the
answers - I am fully aware of how these things work. And because of
that, and because OSM tries to model reality, I believe we need some
kind of anchor-point for our thinking in order to converge on a proper
solution. In many countries postcodes/zip codes are associated with
geographic areas; the UK, as frequently happens, uses a different
paradigm. We need a clear statement of the intention for the addresses
in OSM, and my belief is that they represent postal addresses as per the
PAF. PO Box numbers are not applicable to OSM, as they cannot be related
to a location useful in OSM. The discussion is just about Dependent
Locaiity, Double Dependent Locality, and Dependent Thoroughfare. If we
can define what OSM tag should be used for these three fields, we have a
model which is sufficient for all UK addresses.
Of course, it is an option to decide to NOT represent this level of
detail in OSM. In that case, expect mappers to make up their own
solutions, and this discussion to resurface every few months.
Next iteration:
ELEMENT
FIELD NAME
DESCRIPTION
MAX LENGTH
OSM
Organisation
Organisation Name
60
n/a
Department Name
60
n/a
Premises
Sub Building Name
30
addr:unit
Building Name
50
addr:housename
Building Number
4
addr:housenumber
Thoroughfare
Dependent Thoroughfare Name
60
Dependent Thoroughfare Descriptor
20
Thoroughfare Name
Street
60
addr:street
Thoroughfare Descriptor
20
addr:street
Locality
Double Dependent Locality
Small villages
35
Dependent Locality
35
Post town
30
addr:city
Postcode
Postcode
7
addr:postcode
PO Box
PO Box
6
n/a
On 2019-01-27 23:17, David Woolley wrote:
> On 27/01/2019 21:21, Colin Smale wrote:
>
>> Organisation Organisation Name 60 n/a
>> Department Name 60 n/a
>> Premises Sub Building Name 30
>
> addr:unit
>
>> Building Name 50 addr:housename
>> Building Number 4 addr:housenumber
>> Thoroughfare Dependent Thoroughfare Name 60
>
> This is the one that actually normally causes questions. It is quite common
> to have named terraces, and to have runs of maisonettes numbered within a
> name.
>
>> Dependent Thoroughfare Descriptor 20 Thoroughfare Name Street
>> 60 addr:street
>> Thoroughfare Descriptor 20 Locality Double Dependent Locality
>> Small villages 35 Dependent Locality 35 Post town 30
>> addr:city
>
> Firstly, addr in OSM is generally postal, not geographical. As indicated
> elsewhere containment (or is_in) define the geographical place.
>
> Secondly, in practice the only parts of the address you need are the detailed
> destination point code and the post code. However, I discovered that the
> postie on the beat also needs the street name to avoid having to look it up
> from the postcode.
>
> The bar codes for Walksort only contain the postcode and two character
> detailed destination. (Is there a potential project there, to capture these.
> Everyone who has received utility bills will have their own code, but they
> are only available to paying customers, as far as the sender is concerned.)
>
>> Postcode Postcode 7 addr:postcode
>> PO Box PO Box 6
>
> PO Box is not really relevant. In most cases it is attached to a post office
> building.
>
>>
>
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