SPSS® 12.0 Command Syntax Reference

952 MATRIX—END MATRIX
Valid keywords on the TYPE specification are:
COV A matrix of covariances.
CORR A matrix of correlation coefficients.
MEAN A vector of means.
STDDEV A vector of standard deviations.
N A vector of numbers of cases.
COUNT A vector of counts.
Names of Matrix Variables from MGET
• The MGET statement automatically creates matrix variable names for the matrices it reads.
• All new variables created by MGET are reported to the user.
• If a matrix variable already exists with the same name that MGET chose for a new variable,
the new variable is not created and a warning is issued. The RELEASE statement can be used
to get rid of a variable. A COMPUTE statement followed by RELEASE can be used to change
the name of an existing matrix variable.
MGET constructs variable names in the following manner:
• The first two characters of the name identify the row type. If there are no cells and no split
file groups, these two characters constitute the name:
CV A covariance matrix (rowtype COV)
CR A correlation matrix (rowtype CORR)
MN A vector of means (rowtype MEAN)
SD A vector of standard deviations (rowtype STDDEV)
NC A vector of numbers of cases (rowtype N)
CN A vector of counts (rowtype COUNT)
• Characters 3–5 of the variable name identify the cell number or the split-group number. Cell
identifiers consist of the letter F and a two-digit cell number. Split-group identifiers consist
of the letter S and a two-digit split-group number; for example, MNF12 or SDS22.
• If there are both cells and split groups, characters 3–5 identify the cell and characters 6–8
identify the split group. The same convention for cell or split-file numbers is used—for
example, CRF12S21.
• After the name is constructed as described above, any leading zeros are removed from the
cell number and the split-group number—for example, CNF2S99 or CVF2S1.