[OSM-talk] Landsat vs PGS [was: Coastline and Rivers]

Thomas Walraet thomas at walraet.com
Wed Nov 28 10:59:55 GMT 2007


Raphael Studer a écrit :
> 
> I change the source after using landsat images.
> But the question is still the same.
> 
> Where does a river and and a coastline begin?

IMHO, it's coastline if tides affect the water level. As proposed on 
this page : http://wiki.openstreetmap.org/index.php/Tidal_Rivers

Another option is to decide based on the presence or not of salt on the 
water. (sea is salted, rivers are not)

Not easy to see on landsat imagery though...




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