Output Data Set

The TRANS Procedure

Output Data Set

The output data set contains the variables listed in the HEADNODE, TAILNODE, and SUPPLY statements, and an additional variable named _DUAL_. See the "Dual Variables" section. For each observation in the COST= data set that is associated with a source node, the output data set tells you

the optimal flow between the source and destination nodes
the name of the source node as given in the TAILNODE variable
the value of the dual variable associated with that source node.

The demand data specified in the COST= data set are also included in the same observation as they are in the COST= data set. The TAILNODE variable has the value _DEMAND_ in this observation. An observation labeled with the TAILNODE variable taking the value _DUAL_ contains the dual variables at the destination nodes.

Chapter Contents
Previous
Next
Top