hull <<EOF 0 0 1 1 2 2 EOFreading from stdin main output to stdout dim=2 not shuffling will produce main output finding convex hull... rdim=2; pdim=2 computed %hull 0 2

After the chatter, the real output is the last three lines, the first
line simply echoing the command line.
The three points (0,0), (1,1), and (2,2) are in the line *y=x* in the plane,
and their convex hull is the line segment (0,0)--(2,2), with facets
(0,0), which is point number 0, and (2,2) which is point number 2.

Input is random, uniform ints in a square with sidelength 1e6;rsites 10 2 | hull -A -oN -ov -oFexamplereading from stdin dim=2 not shuffling no main output finding Delaunay triangulation... rdim=3; pdim=2 computed finding alpha shape; output to example-alf alpha=2.78177E+11 finding volumes; output to example-vol

Compute the alpha shape and volumes of Voronoi regions. do not output the Delaunay triangulation that is also computed.

The "plausible" alpha computed by the program is 2.78177E+11.

The volume output says, for example, that the set of points closest to sites 8 and 2 has 1-volume (that is, length) 60446.2.cat example-alf%hull -A -oN 0 6 0 9 3 8 3 9 8 5 1 5 6 1cat example-vol | grep -v INF8 2 60446.2 8 2 5 1 8 2 3 1 8 -1 9 1 8 -1 5 1 8 3 909292 8 3 9 1 2 8.75466E+10 2 3 104949 2 3 7 1 ...etc.