INITIAL Subcommand (QUICK CLUSTER command)

INITIAL specifies the initial cluster centers. Initial cluster centers can also be read from a data file (see FILE Subcommand (QUICK CLUSTER command)).

• One value for each clustering variable must be included for each cluster requested. Values are specified in parentheses cluster by cluster.

Example

QUICK CLUSTER  A B C D
  /CRITERIA = CLUSTER(3)
  /INITIAL = (13 24  1  8
               7 12  5  9
              10 18 17 16).

• This example specifies four clustering variables and requests three clusters. Thus, twelve values are supplied on INITIAL.
• The initial center of the first cluster has a value of 13 for variable A, 24 for variable B, 1 for C, and 8 for D.