MATRIX Subcommand (REGRESSION command)

MATRIX reads and writes matrix data files. It can read matrix data files or datasets written by previous REGRESSION procedures or data files or datasets written by other procedures such as CORRELATIONS. The matrix materials REGRESSION writes also include the mean, standard deviation, and number of cases used to compute each coefficient. This information immediately precedes the correlation matrix in the matrix file.

• Either IN or OUT and a matrix file or previously declared dataset name in parentheses are required on MATRIX.
• When used, MATRIX must be the first subcommand specified in a REGRESSION procedure.
• ORIGIN and NOORIGIN affect the way the correlation matrix is built. If matrix materials are used as input to REGRESSION, the keyword that was in effect when the matrix was written should be in effect when that matrix is read.

OUT ('savfile'|'dataset'). Write a matrix data file or dataset. Specify either a filename, a previously declared dataset name, or an asterisk, enclosed in parentheses. Filenames should be enclosed in quotes and are stored in the working directory unless a path is included as part of the file specification. If you specify an asterisk (*), the matrix data file replaces the active dataset. If you specify an asterisk or a dataset name, the file is not stored on disk unless you use SAVE or XSAVE.

IN ('savfile'|'dataset'). Read a matrix data file or dataset. Specify either a filename, dataset name created during the current session, or an asterisk enclosed in parentheses. An asterisk reads the matrix data from the active dataset. Filenames should be enclosed in quotes and are read from the working directory unless a path is included as part of the file specification.