The HEIGHT statement specifies the name of a numeric variable to define the height of each node (cluster) in the tree. The
height variable can also be specified by the HEIGHT= option in the PROC TREE statement. If both the HEIGHT statement and the
HEIGHT= option are omitted, PROC TREE uses the variable _HEIGHT_
. If the data set does not contain _HEIGHT_
, PROC TREE uses the variable _NCL_
. If _NCL_
is not present either, the height of each node is defined to be its path length from the root.