[Talk-GB] Office of National Statistics data

[Tom Hughes]

On 31/10/12 12:08, Colin Smale wrote:

> I notice you say "PLEASE do not add the centroids to the OSM map database.
> The centroids are not real objects so they do not belong in the OSM
> database.". Is this not something we actually do all the time? We
> represent places and amenities by a node as an approximation, unless
> someone takes the time to enter the true extent of the object in question,
> which often doesn't happen.

Well postcodes don't really have a "true extent" either.

Any bounding polygon or centroid is merely an approximation derived from 
the actual definition of the postcode, which is simply the list of 
addresses it applies to, so the correct way to represent it is by adding 
it to those buildings.

Tom

-- 
Tom Hughes (tom at compton.nu)
http://compton.nu/