On 16 January 2013 13:04, Brian Prangle <bpran...@gmail.com> wrote: > You might like to get a volunteer to check a pilot import that's limited > within a manageable area - suggest a limited range of postcodes
Another useful check would be to apply your matching over the OSM database, and pull out all the potential polygons that are already tagged with a postcode. Then compare the existing tagging with the postcode you get from the external data. Loot at the number / percentage of dependencies, and for each one try to work out which source is correct. This might will give you another indication of the accuracy of the proposed import. (Personally, I'm not sure I see much benefit to the import. It's presumably going to add relatively few postcodes, so won't be that much use for anyone wanting to use OSM data for postcode look-ups. Indeed anyone wanting to do that could just as easily use the centroid data directly to map a postcode to a location, and then use that location to do whatever searching they want to do on OSM. There is obviously some advantage in that we'll have more buildings / amenities with properly assigned post-codes. But because of the relatively low benefit (unless I'm missing something) I would say that the community should see good evidence for an extremely low error rate on the import before agreeing that it would be a good thing to do.) Robert. -- Robert Whittaker _______________________________________________ Talk-GB mailing list Talk-GB@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-gb
