2011

Use this dialog box to specify how to determine resistance for links and nodes
and to specify how to determine the direction of link objects for the network
analysis.
To perform a shortest path trace (page 1326)
To perform a best route analysis (page 1330)
To perform a flood trace (page 1334)
Click Analyze tab ➤ Drawing Object panel ➤ Network Analysis.
Direction
Specify how to determine the direction of link objects for the analysis.
Link Direction
Enter a value or enter the location of the data to use to determine the
direction of the links. To select the location of the data from a list, click
Expression Builder. Select the data to use. You can also enter any valid
expression. See
Expression Evaluator (page 1541). If you leave the box blank,
bi-directional (0) is used.
Link Direction is...If the expression evaluates to...
Bi-directional>0 or a character
The physical directionA positive number
The reverse of the physical directionA negative number
Reverse
Select this option to use the reverse of the direction indicated in the Link
Direction field.
Resistance
Specify how to determine resistance for links and nodes. Enter the location
of the data to use to determine the direct resistance and reverse resistance
of link objects and the resistance of nodes. To use values in an object data
table or external database, click Expression Builder. Select the data to use.
You can also enter any valid expression.
■ Link Direct Resistance — Specify the resistance to travel in the direction
that a link was created. If you leave the box blank, the length of the line
(.LENGTH) is used.
1982 | Chapter 38 Topology Dialog Boxes