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SPSS® 12.0 Command Syntax Reference

SPSS® 12.0 Command Syntax Reference

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482 DISCRIMINANT<br />

SEPARATE Separate-groups plots. These are the same types of plots produced by the<br />

keyword COMBINED, except that a separate plot is produced for each group.<br />

If only one function is used, a histogram is displayed.<br />

ALL All available plots.<br />

MISSING Subcommand<br />

MISSING controls the treatment of cases with missing values in the analysis phase. By<br />

default, cases with missing values for any variable named on the VARIABLES subcommand<br />

are not used in the analysis phase but are used in classification.<br />

• The keyword INCLUDE includes cases with user-missing values in the analysis phase.<br />

• Cases with missing or out-of-range values for the grouping variable are always excluded.<br />

EXCLUDE Exclude all cases with missing values. Cases with user- or system-missing<br />

values are excluded from the analysis. This is the default.<br />

INCLUDE Include cases with user-missing values. User-missing values are treated as<br />

valid values. Only the system-missing value is treated as missing.<br />

MATRIX Subcommand<br />

MATRIX reads and writes SPSS-format matrix data files.<br />

• Either IN or OUT and the matrix file in parentheses are required. When both IN and OUT<br />

are used in the same DISCRIMINANT procedure, they can be specified on separate MATRIX<br />

subcommands or on the same subcommand.<br />

OUT (filename) Write a matrix data file. Specify either a filename or an asterisk in parentheses<br />

(*). If you specify a filename, the file is stored on disk and can be<br />

retrieved at any time. If you specify an asterisk (*), the matrix data file<br />

replaces the working data file but is not stored on disk unless you use SAVE<br />

or XSAVE.<br />

IN (filename) Read a matrix data file. If the matrix data file is the working data file, specify<br />

an asterisk (*) in parentheses. If the matrix file is another file, specify the<br />

filename in parentheses. A matrix file read from an external file does not<br />

replace the working data file.<br />

Matrix Output<br />

• In addition to Pearson correlation coefficients, the matrix materials written by<br />

DISCRIMINANT include weighted and unweighted numbers of cases, means, and standard<br />

deviations. (See “Format of the Matrix Data File” on p. 483 for a description of the file.)<br />

These materials can be used in subsequent DISCRIMINANT procedures.<br />

• Any documents contained in the working data file are not transferred to the matrix file.<br />

• If BOXM or GCOV is specified on the STATISTICS subcommand or SEPARATE is specified<br />

on the CLASSIFY subcommand when a matrix file is written, the STDDEV and CORR

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