SELECT Subcommand (FACTOR command)

SELECT limits cases used in the analysis phase to those with a specified value for any one variable.

  • Only one SELECT subcommand is allowed. If more than one is specified, the last is in effect.
  • The specification is a variable name and a valid value in parentheses. A string value must be specified within quotes. Multiple variables or values are not permitted.
  • The selection variable does not have to be specified on the VARIABLES subcommand.
  • Only cases with the specified value for the selection variable are used in computing the correlation or covariance matrix. You can compute and save factor scores for the unselected cases as well as the selected cases.
  • SELECT is not valid if MATRIX = IN is specified.

Example

FACTOR VARIABLES = V1 TO V10
  /SELECT=COMPLETE(1)
  /SAVE (4).
  • FACTOR analyzes all ten variables named on VARIABLES, using only cases with a value of 1 for the variable COMPLETE.
  • By default, FACTOR uses the CORRELATION method and performs the principal components analysis of the selected cases. Those with eigenvalues greater than 1 are rotated using varimax rotation.
  • Four factor scores, for both selected and unselected cases, are computed using the default regression method and four new variables are saved in the active dataset.