[Talk-GB] UK Postcode Error Reports

[Brian Prangle]

Fantastic tool Robert! I've started  a cleanup in Birmingham using this.
It's amazing the number of typos you can insert in an original edit and QA
tools like this are invaluable in unearthing them. I hope everyone can go
on a postcde error hunt using this tool

Regards

Robert

On 16 November 2016 at 20:33, Robert Whittaker (OSM lists) <
robert.whittaker+osm at gmail.com> wrote:

> My daily report of addr:postcode value errors at
> http://robert.mathmos.net/osm/postcodes/osm-errors.html seems to be
> being used by at least one other person, since the numbers of errors
> showing there has dropped significantly now. The page is regenerated
> daily, but unfortunately the data hasn't been refreshed for a few days
> now because the source data on which it relies (The Geofrabrik GB
> extract via the GB Taginfo instance) hasn't been updated in that time.
>
> I've also starting playing with a second report that lists location
> discrepancies of postcode-tagged OSM objects compared with the
> postcode centroid locations in Code-Point Open. This is less of an
> exact science, since postcodes will not all be located at the centroid
> for that postcode unit, and the allowable deviations vary depending on
> the unit. However, you can find an initial list of postcodes that are
> more than 1km from their official centroid at
> http://robert.mathmos.net/osm/postcodes/location-errors.cgi -- there
> are about 1500 of them, although quite a few are in groups where the
> same postcode is on multiple neighbouring objects. Presumably most of
> the 1500 will be cases of a typo being made by an editor or in the
> data source they used, so they'll need manual checking and updating.
>
> If anyone fancies looking at any of these please feel free to dive in.
> If you find any false positives (i.e. errors in the processing, or
> postcodes that genuinely are that far from their centroid), please let
> me know, and I'll see if there's anything that can be improved in the
> tool, or if they need to be marked manually as ok.
>
> Robert.
>
> --
> Robert Whittaker
>
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