On 21/01/11 10:02, Kevin Peat wrote: > So I should delete the various admin boundaries in the db then as they > cannot be viewed on the ground?
They may not be viewable on the ground, but they are real in the sense that somebody has defined them by reference to features on the ground. Postcode centroids are not real like that - in fact postcodes are not defined in a geographic way at all. Rather they are defined by lists of addresses. The centroid (and the bounding polygons that you sometimes see) are then generated algorithmically from the locations of those addresses. Tom -- Tom Hughes (t...@compton.nu) http://compton.nu/ _______________________________________________ Talk-GB mailing list Talk-GB@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-gb
