[Talk-GB] Import UK postcode data?

Russ Phillips russ at phillipsuk.org
Wed Oct 2 17:10:25 UTC 2019


I didn't even know there was an OsmAnd forum ;) I'll go look for it, thanks.

Russ

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On 2 Oct 2019, 16:47, at 16:47, Nick Allen <nick.allen.54 at gmail.com> wrote:
>Hi Russ,
>
>Somewhere in tbe Osmand forum you should find a link for a postcode
>player
>you can download & use. I think it was Harry, one of the main people
>answering queries who produced it.
>
>Regards
>
>Nick
>my phone is responsible for any spelling mistakes!
>
>On Wed, 2 Oct 2019, 17:12 Russ Phillips via Talk-GB, <
>talk-gb at openstreetmap.org> wrote:
>
>> OsmAnd is what made me think of it. I'm using that for directions a
>lot
>> now, and it's common these days to give a postcode to plug into a sat
>nav,
>> but they frequently don't work in OsmAnd.
>>
>> I was somewhat surprised that it hadn't already been done, and I
>accept
>> all the reasons for not doing it.
>>
>> I'll look into alternatives.
>>
>> Russ
>>
>>
>> On 02/10/2019 15:52, SK53 wrote:
>>
>> I really see no point. The data are already present in Nominatim 
>(albeit
>> perhaps not up-to-date) and search is the ONLY thing that so-called
>> postcode centroids can help with. DE24 (Sinfin) was imported long
>ago, see
>> this overpass query <http://overpass-turbo.eu/s/MNZ>.
>>
>> What can be done is attempt to assign postcodes to streets, and
>various
>> incomplete efforts have been made over the years. Open Data provides
>full
>> addresses for around 70% of UK postcodes (principally Companies
>House, Food
>> Hygiene & National Register of Social Housing).
>>
>> What would be useful is a maintained set of postcode information
>based on
>> codepoint open/ONS postcode data/OS Local. The sorts of things which
>it
>> would be useful to know are:
>>
>>    - Is the postcode centroid co-located with others (e.g., delivery
>>    offices, some businesses, blocks of flats)
>>    - Can the postcode be unambiguously assigned to a street & post
>town?
>>    - Is the post code in use or not (ONS is now obviously 8 years
>old,
>>    but still potentially useful). Greg's FHRS tracker does appear to
>indicate
>>    a degree of churn with inner-city postcodes (although some of this
>will be
>>    inadvertent use of more general rather than specific postcodes by
>people
>>    filling in the FHRS forms)
>>    - Is a postcode the sole postcode for that street?
>>
>> Somewhere I have an old CPO table with some of this data populated. I
>> think Geolytix had summary info associated with their post code
>sector
>> shape files as well.
>>
>> Adding addr:postcode to streets which have a single postcode is in my
>book
>> fine: numerous LAs put this on street signs (Rushcliffe & Gedling for
>> sure); it's an intermediate step to adding the addresses to houses 
>Once
>> the postcodes which obviously belong to a single street are
>eliminated it's
>> often easier to work out where the others belong.
>>
>> Note that other than for FHRS we have no good source for Northern
>Ireland
>> postcodes at all. Equally assignment of rural postcodes is quite a
>bit
>> harder than urban ones. In re-reading bits of Chris's blog last night
>I
>> came across a post of his
>> <https://chris-osm.blogspot.com/2017/03/have-you-moved.html> showing
>that
>> some postcodes move huge distances between releases.
>>
>> Jerry
>>
>> PS. The Sinfin postcodes possibly should be removed as they were
>added
>> IIRC before Mike Collinson's discussions with OSGB about OS Open
>Data.
>>
>> On Wed, 2 Oct 2019 at 13:44, Russ Phillips via Talk-GB <
>> talk-gb at openstreetmap.org> wrote:
>>
>>> Hi,
>>>
>>> I'm wondering if it would be feasible and advisable to import the UK
>>> postcode data from OS OpenData Codepoint
>>>
><https://wiki.openstreetmap.org/wiki/Ordnance_Survey_OpenData#Code-Point_Open>
>>> .
>>>
>>> The licence is OSM compatible. My thinking was that we could create
>a
>>> node for each data point and set the addr:postcode tag. This would
>be
>>> useful for routing software like OsmAnd, since it would allow a user
>to
>>> enter a postcode as a destination.
>>>
>>> I'm happy to do the work, but the import guidelines
>>> <https://wiki.openstreetmap.org/wiki/Import/Guidelines> say that
>imports
>>> should be discussed on the imports@ list and the appropriate local
>>> communities, hence this email.
>>>
>>> Russ Phillips
>>>
>>>
>>> _______________________________________________
>>> Talk-GB mailing list
>>> Talk-GB at openstreetmap.org
>>> https://lists.openstreetmap.org/listinfo/talk-gb
>>>
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