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) < [email protected]> 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 > > _______________________________________________ > Talk-GB mailing list > [email protected] > https://lists.openstreetmap.org/listinfo/talk-gb >
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