SPSS® 12.0 Command Syntax Reference

SPSS Matrix Data Files
Files 15
An SPSS matrix data file is similar to any SPSS-format data file. It is a self-documented file
containing data and descriptive information. The descriptive information, stored in the file
dictionary, includes variable names, variable print and write formats, and optional variable
and value labels. You can assign or change the names, labels, and formats of the variables in
a matrix data file, just as you can in any SPSS-format data file. Many procedures can read raw
matrix data and write a representative matrix of the data values to an SPSS matrix data file,
which can be used as input for subsequent analysis.
Table 2 shows the types of matrix materials written by SPSS procedures. The ROWTYPE_
values (discussed below) of each matrix are also included so that you can see which
procedure matrices are readable by other procedures. If a procedure produces more than one
type of matrix, the subcommands required for each type of matrix are listed.
Table 2 Types of matrices and their contents
Command Subcommands/Notes ROWTYPE_ values
ALSCAL PROX
CLUSTER PROX
CORRELATIONS MEAN
STDDEV
N
CORR
DISCRIMINANT /CLASSIFY=POOLED N (1 per cell)
COUNT (1 per cell)
MEAN (1 per cell)
STDDEV (pooled)
CORR (pooled)
/CLASSIFY=SEPARATE, N (1 per cell)
/STATISTICS=BOXM, or COUNT (1 per cell)
/STATISTICS=GCOV
MEAN (1 per cell)
STDDEV (1 per cell)
CORR (1 per cell)
FACTOR
/MATRIX=OUT(CORR=file)
/MATRIX=IN(CORR=file)
CORR
MANOVA
/MATRIX=OUT(FAC=file)
/MATRIX=IN(FAC=file)
FACTOR
N (cell and pooled)
MEAN (1 per cell)
STDDEV (pooled)
CORR (pooled)