# Courtesy B. Torben Nielson, btmorph_v2
# Horton-Strahler index example from wikipedia
#http://en.wikipedia.org/wiki/Strahler_number
#http://en.wikipedia.org/wiki/File:Flussordnung_%28Strahler%29.svg
#For testing purposes
1 1 0.0 0.0 0.0 4 -1
2 1 0.0 -2.0 0.0 1 1
3 1 0.0 2.0 0.0 1 1
4 3 0.0 10 0.0 4 1
5 3 -10.0 20.0 0.0 1 4
6 3 0.0 20.0 0.0 4 4
7 3 10.0 30.0 0.0 3 6
8 3 20.0 30.0 0.0 2 7
9 3 30.0 30.0 0.0 1 8
10 3 30.0 40.0 0.0 1 8
11 3 10.0 40.0 0.0 2 7
12 3 20.0 40.0 0.0 1 11
13 3 10.0 50.0 0.0 1 11
14 3 0.0 30.0 0.0 3 6
15 3 -10.0 40.0 0.0 1 14
16 3 0.0 40.0 0.0 3 14
17 3 -10.0 50.0 0.0 2 16
18 3 -20.0 50.0 0.0 1 17
19 3 -10.0 60.0 0.0 1 17
20 3 0.0 50.0 0.0 2 16
21 3 0.0 60.0 0.0 1 20
22 3 10.0 60.0 0.0 1 20