[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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