On Wednesday 24 October 2007, [EMAIL PROTECTED] wrote: > > On a contour map i want to plot two points A an B .The requirment is to > > know if point A has a line of sight with point B. For this i started with > > r.contour but this only gives me ontour of pheripheral i.e only the outline > > and not the actual contour map with different heights. Now what i want from > > you is firslty how shoulsd i produce first contour map and then find line > > of sight.
Import your "56k.gdn": v.in.ogr -z dsn=56k.dgn output=dgn Change region as per your requirement: g.region vect=dgn or g.region n=22000 s=-2400 e=11000 w=-22000 Convert vector to raster: v.to.rast input=dgn output=dgnRas use=attr column=Level Produce DEM: r.surf.contour input=dgnRas output=dgnDTM r.los give you viewshed, not visibility between two point, as such. You may also try d.profile All the dest, -- H.S.Rai http://hs.raiandrai.com/ _______________________________________________ grassuser mailing list grassuser@grass.itc.it http://grass.itc.it/mailman/listinfo/grassuser
