Description Usage Arguments Value
Get the angle between the two nodes specified.
| 1 | getNodeAngle.df(df, origin_node_id, node_id)
 | 
| df | tree data.frame | 
| origin_node_id | origin node id number | 
| node_id | end node id number | 
angle in range [-1, 1], i.e. degrees/180, radians/pi
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