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AUTORECODE VARIABLES=src_vars INTO dest_vars [ /DESCENDING ] [ /PRINT ] [ /GROUP ] [ /BLANK = {VALID, MISSING} ]
The AUTORECODE
procedure considers the n values that a variable
takes on and maps them onto values 1…n on a new numeric
variable.
Subcommand VARIABLES
is the only required subcommand and must come
first. Specify VARIABLES
, an equals sign (‘=’), a list of source
variables, INTO
, and a list of target variables. There must the same
number of source and target variables. The target variables must not
already exist.
By default, increasing values of a source variable (for a string, this
is based on character code comparisons) are recoded to increasing values
of its target variable. To cause increasing values of a source variable
to be recoded to decreasing values of its target variable (n down
to 1), specify DESCENDING
.
PRINT
is currently ignored.
The GROUP
subcommand is relevant only if more than one variable is to be
recoded. It causes a single mapping between source and target values to
be used, instead of one map per variable.
If /BLANK=MISSING
is given, then string variables which contain only
whitespace are recoded as SYSMIS. If /BLANK=VALID
is given then they
will be allocated a value like any other. /BLANK
is not relevant
to numeric values. /BLANK=VALID
is the default.
AUTORECODE
is a procedure. It causes the data to be read.