On 19 October 2017 at 13:38, Ed Loach <[email protected]> wrote: >> For anyone else reading, we're talking about >> http://robert.mathmos.net/osm/postcodes/stats/ > > When I drilled down a bit I found an NG column with a * in it, e.g. > http://robert.mathmos.net/osm/postcodes/stats/CO/CO13/ > > In this instance I think the 4 CO13 3 codes are PO Boxes but fall just below > your threshold of 5 but am wondering if NG is non-geographic?
Yes, "NG" is non-geographic. Royal Mail publish a list of non-geographic sectors every six months, which I've parsed and imported into my tool. I've now added a note under the table to explain this. You would have been right about the 5 threshold, but actually there are other units in different sectors that are located at the same delivery office, which would have pushed it over. The problem was actually a bug in my code, that meant that sectors with no units under the threshold didn't get reported properly. That should now be fixed. (Although I should probably look to make it automatically discount all postcodes in sectors flagged as Non-Geographic, rather than using the threshold for them -- but that will need a bit more SQL magic to achieve.) Robert. -- Robert Whittaker _______________________________________________ Talk-GB mailing list [email protected] https://lists.openstreetmap.org/listinfo/talk-gb
