When matrix materials are read from a file other
than the active dataset, both the active dataset and the matrix data
file that is specified on IN must
contain all variables that are specified on the VARIABLES subcommand.
MATRIX=IN cannot
be specified unless a active dataset has already been defined. To
read an existing matrix data file at the beginning of a session, use GET to retrieve the matrix file and then
specify IN(*) on MATRIX.
PARTIAL CORR can read correlation-type matrices written by other procedures.
The program reads variable names, variable and value
labels, and print and write formats from the dictionary of the matrix
data file.