On 20/10/2014 10:12, Pavel Machek wrote:
Hi!
I just stumbled over
http://earthenginepartners.appspot.com/science-2013-global-forest
More info under
http://earthenginepartners.appspot.com/science-2013-global-forest/dow
nload.html
Independent from the license the tree cover data is not suited for
import into OSM for multiple reasons:
- the data shows percentage of tree cover which is something OSM does
not map. OSM does only distinguish between forest/wood and no
It should be pretty safe to say that anything with >75% tree cover is
forest/wood.
My back garden begs to differ!
Seriously, for the reasons already mentioned it doesn't make sense to
import this, but it does sound like it would be very useful as a way of
QAing already imported forest / non-forest data. It'd only be useful
for _large_ forest areas though and only as a second opinion - looking
locally there are more than a few "false positives" and "false
negatives" (showing forest loss when there wasn't any, and missing some
forest extent / forest gain). Also the data (in Derbyshire, England)
seems to be offset to the south by a couple of tens of meters.
Cheers,
Andy
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