Andy Robinson (blackadder-lists <ajrlists@...> writes: >><http://www.raggedred.net/codepoint/> >> >>I see - so you can use your judgement to work out the area of a postcode >>based on its centroid and the streets and buildings nearby. > > >It's not that simple. You need to do the ground survey first to get the >house numbers and work out which property "belongs" to which street.
Ah, right. I thought it sounded too good to be true! Jerry C. also pointed out that house numbers have to be present. So the ground survey is to add the house numbers - or I suppose just addr:street would be sufficient in most cases? - and then the armchair part is putting those together with the code point data to find buildings in a particular postcode. OSM's coverage of streets is much better than its coverage of buildings. Might it make sense to tag postcodes on ways? -- Ed Avis <[email protected]> _______________________________________________ Talk-GB mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk-gb
