On 08/12/2010 14:35, Maarten Deen wrote:
I have never heard of this before and have never seen it documented
anywhere or seen discussed before. The only mention of "do not trace
from aerial maps" is when it is off Google's maps because we cannot
legaly use them.
Never before have I seen a mention of "do not trace from aerial maps
where you do not have local knowledge".
If you can point to previous discussions about this, that would be
very helpful. Until that, I support Steve's view completely.
See:
http://www.gravitystorm.co.uk/shine/archives/2009/11/10/the-pottery-club/
http://wiki.openstreetmap.org/wiki/Yahoo!_Aerial_Imagery#Problems_with_tracing_Yahoo
http://lists.openstreetmap.org/pipermail/talk/2006-December/009304.html
http://lists.openstreetmap.org/pipermail/talk-gb/2010-January/008698.html and
subsequent messages
http://brainoff.com/weblog/2010/04/28/1556 (last para in particular)
http://lists.openstreetmap.org/pipermail/talk-ca/2009-October/001753.html
...I'll have more later.
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