Dear grass user I'm looking for a grass command that unobstructed view area at one station.
For example... I want to estimate the veiwable area around the top, when I am in the top of a mountain. It looks like simple, but I cannot see the opponent if there is a b arrier in front of my position. In bird survey ( bird count in fixed station ), investigator's observation are a (or viewable area) is very important.... Is there a grass command that calcurates viewable area, when altitude dem (ras t) and the observation point (vect or rast) are given ...? Best Yasuo shimada ( Japan weather Association ) _______________________________________________ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
