On 21 June 2010 21:03, Chris Hill <o...@raggedred.net> wrote: > And exactly how do you propose that we get accurate coordinates for the > positions of streets in 1665 other using a modern surveyed overlay? I > don't think Samuel Pepys supplemented his diary with GPS derived WGS84 > coordinates. :-)
Doesn't most countries have their own datum that is fixed to the tectonic plate and they keep track of this in relation with WGS84? _______________________________________________ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk