Hamish:
> > d.what.vect will give you a 3D distance to compare
> > against for an easy test.
Maciek:
> Sorry I'm dense, but I don't get it how d.what.vect can
> measure 3D distance. Can you explain?
Length is one it the outputs... just this:
echo "L 2
571600 5722275.5 0
571610 5722275.5 20" | v.in.ascii -zn form=standard out=l3d
echo "L 2
571600 5722276.5
571610 5722276.5" | v.in.ascii -n form=standard out=l2d
g.region v=l3d
d.vect l3d
d.vect l2d color=blue
d.what.vect -x --q
571604.16666667(E) 5722276.5(N)
l3d in user1 Nothing Found.
l2d in user1 Line
length 10.000000
571603.95833333(E) 5722275.45833333(N)
l3d in user1 Line
length 22.360680
Line height min: 0.000000 max: 20.000000
l2d in user1 Nothing Found.
Hamish
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