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.