code (dataloop)¶

Purpose¶

Creates new variables with different values based on a set of logical expressions.

code [[#]] [[$]] var [[default defval]] with val_1 for expression_1, val_2 for expression_2, ... val_n for expression_n Parameters: var (literal) – the new variable name. defval (scalar) – the default value if none of the expressions are TRUE. val (scalar) – value to be used if corresponding expression is TRUE. expression (scalar) – logical scalar-returning expression that returns nonzero TRUE or zero FALSE Examples¶ code agecat default 5 with 1 for age < 21, 2 for age >= 21 and age < 35, 3 for age >= 35 and age < 50, 4 for age >= 50 and age < 65;  code$ sex with
"MALE" for gender == 1,
"FEMALE" for gender == 0;


Remarks¶

If ‘\$’ is specified, the new variable will be considered a character variable. If ‘#’ or nothing is specified, the new variable will be considered numeric.

The logical expressions must be mutually exclusive, i.e., only one may return TRUE for a given row (observation).

Any variables referenced must already exist, either as elements of the source dataset, as externs, or as the result of a previous make, vector, or code statement.

If no default value is specified, 999 is used.

Functions recode()