SAS/STAT Software

TREE Procedure

The TREE procedure reads a data set created by the CLUSTER or VARCLUS procedure and produces a tree diagram (also known as a dendrogram or phenogram), which displays the results of a hierarchical clustering analysis as a tree structure. The following are highlights of the TREE procedure's features:

  • produces a diagram of the tree structure that is oriented vertically, with the root at the top, or the diagram can be oriented horizontally, with the root at the left
  • provides options that enable you to control the displayed diagram
  • performs BY group processing, which enables you to obtain separate analyses on grouped observations
  • creates a SAS data set that corresponds to any output table

For further details see the SAS/STAT User's Guide: The TREE Procedure
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