On Tue, 21 Dec 2010 20:27:08 +0100 M∡rtin Koppenhoefer <dieterdre...@gmail.com> wrote:
> A very good map > can't be done just from orthophotos. it is quite a legitimate way of producing maps for remote areas, and a quick web search for orthocadastral map will lead you to scholarly articles on the use. My problem is the polarisation which occurs so quickly on this mailing list. The truthful answer is that sometimes survey is best, and sometimes other techniques are better. http://www.fao.org/sd/ltdirect/ltforum/LTfo0010.htm I would also point out that in the time of the Cold War the USSR completely mapped the UK from orthophotos, with a little ground work by the spy network. http://www.dailymail.co.uk/news/article-1209137/The-Soviet-road-map-shows-USSR-planned-invade-Manchester.html I have read scholarly articles on this set of maps, but can't provide a link at present. _______________________________________________ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk
