[Talk-GB] Postcode data

[Brian Prangle]

Hi Aidan

If you were to do this then two things you should consider:

1. only tag closed ways  where tag is building=xxxxxx AFAIK water and woods
and gardendens etxc don't have postcodes
2.  how to treat buildings where there is already a postcode and if
correct/incorrect

Regards

Brian

On 13 January 2013 15:21, Aidan McGinley
<aidmcgin+openstreetmap at gmail.com>wrote:

> Been toying with some ideas for how to use the ONS Postcode data[1].  One
> idea that I have been exploring is to check if the value for the centre of
> the postcode is inside a closed way, and if so then tag that way with the
> appropriate addr:postcode.  I mocked up a script to check this using the
> overpass API.  Some sample output is in the attached link [2].  Essentially
> the output shows the postcode and the associated way or ways that enclose
> it if more than one.  I've excluded ways tagged landuse=*.  The script is
> pretty inefficient at the moment, and needs to be optimised, but before I
> do that I wanted to check with the wider community that this is a viable
> approach, and if so the best way to do the import.
>
> Worth noting that if the data were imported, then ways that map to
> multiple postcodes would need to be excluded, as discussed previously on
> the mailing list[3]
>
> [1]
> http://www.ons.gov.uk/ons/guide-method/geography/products/postcode-directories/-nspp-/index.html
> [2] http://paste.ubuntu.com/1527642/
> [3]
> http://lists.openstreetmap.org/pipermail/talk-gb/2013-January/014336.html
>
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