Landsat ? (was:Re: [Openstreetmap] New roads appearing without GPS tracks)

[Lars Aronsson]

Mikel Maron wrote:

>  However I would be cautious, when relying on Landsat for 
>  drawing vectors.

I often find that a track following a shoreline road appears where 
the Landsat images show water, an offset of maybe 30-50 meters in 
some direction, which is more than the GPS error should be.  I 
assume this is an error in the Landsat images.  Does anybody 
understand where this comes from?  Is it systematic?


-- 
  Lars Aronsson (lars at aronsson.se)
  Aronsson Datateknik - http://aronsson.se