On Jan 10, 2008 11:06 AM, Lester Caine <[EMAIL PROTECTED]> wrote:

> Stephen Gower wrote:
> > On Thu, Jan 10, 2008 at 10:11:35PM +1300, Robin Paulson wrote:
> >> the boundary data should be relatively easy to come by
> >
> >   Not where it isn't marked on the ground, and is only defined by
> >   reference to the Copyrighted national mapping.  The is the case in
> >   many places in the UK.
>
> AND it is changed each year or so by the Boundary Commission :)
>

Administrative boundary changes (as opposed to electoral ones) are in fact
relatively rare and usually make boundaries follow more easily identified
features (for example, the external border of Greater London in many places
now follows the M25, as opposed to the line of nearby ancient hedges which
may or not be there any more).

-- 
Abi
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