The OPTNET Procedure

DATA_NODES_VAR Statement

DATA_NODES_VAR < options > ;

NODES_VAR < options > ;

The DATA_NODES_VAR statement enables you to explicitly define the data set variable names for PROC OPTNET to use when it reads the data set that is specified in the DATA_NODES= option in the PROC OPTNET statement. The format of the node input data set is defined in the section Node Input Data.

You can specify the following options in the DATA_NODES_VAR statement:

NODE=column: specifies the data set variable name for the nodes. The value of column can be numeric or character.
WEIGHT=column: specifies the data set variable name for node weights. The value of column must be numeric.
WEIGHT2=column: specifies the data set variable name for auxiliary node weights. The value of column must be numeric.

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