[GRASS-user] Selecting a sector of the viewshed

AhmadKhaled vbkhp at yahoo.com
Thu Apr 15 10:27:26 EDT 2010


Hi,

I have used the r.los function to calculate the viewshed from a point in the
map. The result is a subset of a circle around that point. Now, I want to
select a sector of this circle which has an angle of 45 (or whatever), and
nullify the rest of the circle. Any idea on what is the best way to do that?

Thanks in advance,
Ahmad
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