BY variables;
The BY statement specifies groups in which separate FIT analyses for copula are performed. The variables must be present in the input data set and are excluded from the model fitting. The BY statement requires the VAR statement to be present.
A SIMULATE statement can also be used with a BY statement, provided that a FIT statement precedes the SIMULATE statement. Multiple FIT and SIMULATE statements can be used with a BY statement. If a FIT statement and a SIMULATE statement both specify the same name, then the fitting results of the FIT statement with that name are used to initialize the simulation of the same name. If no names are specified in a sequence of FIT and SIMULATE statements, then the simulation requested by a particular SIMULATE statement is initialized using the fitting results from the FIT statement that immediately precedes the SIMULATE statement.