[Talk-in] national parks

[Kenneth Gonsalves]

On Thursday 01 Apr 2010 7:32:37 pm PlaneMad wrote:
> On Thu, Apr 1, 2010 at 5:45 PM, Kenneth Gonsalves <lawgon at au-kbc.org> wrote:
> > landsat is cool - am now able to map the lakes in the Nilgiris with
> > reasonable
> > accuracy
> > --
> 
> dont forget the lakewalker plugin. one click tracing of water bodies from
> landsat tiles.
> 

how accurate is landsat? If you look at this link:
http://www.openstreetmap.org/?lat=11.327&lon=76.6144&zoom=14&layers=B000FTF

the lakes are traced from landsat and you find the road going through the lake 
at points. The road is done from gps tracks and is accurate to a meter. And 
even at the closest points to the lake, it is at least 20 meters from the lake 
edge even if the lake is full.
-- 
regards
Kenneth Gonsalves
Senior Associate
NRC-FOSS
http://certificate.nrcfoss.au-kbc.org.in