Removes specific rows in a data loop based on a logical expression.
delete age < 40 or sex == 'FEMALE';
Deletes only those rows for which logical_expression is
variables referenced must already exist, either as elements of the
source dataset, as
extern’s, or as the result of a previous make,
vector, or code statement.
GAUSS expects logical_expression to return a row vector of 1’s and 0’s.
The relational and other operators (e.g.
<) are already interpreted in
terms of their dot equivalents (
.<), but it is up to the user to make
sure that function calls within logical_expression result in a vector.