Chapter Contents
Chapter Contents		 Previous
Previous		 Next
Next
The TRANS Procedure

Missing Values

A missing value in a HEADNODE list variable in the COST= data set indicates that the arc from that observation's TAILNODE list source node to the corresponding destination node does not exist. A missing supply or demand value is interpreted as zero.

A missing value in the MINFLOW= data set and CAPACITY= data set causes the procedure to assign the default capacity or default minimum flow to the corresponding arc, if it exists.

A missing value in the OUT= data set is used when the arc does not exist.

Chapter Contents
Chapter Contents		 Previous
Previous		 Next
Next		 Top
Top

Copyright © 1999 by SAS Institute Inc., Cary, NC, USA. All rights reserved.