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■ To discard the point and return to the dialog box, press Esc.
■ To accept the point and specify another point, right-click in the
drawing. Click Next Point.
8 In the dialog box, review the start points and visit points you have
specified.
■ To double-check the location of a point in the map, highlight the
coordinates in the list. Click Preview.
■ To delete a point so that you can define a new one, highlight the
coordinates in the list. Click Delete.
■ To add another visit point, return to Step 5.
9 Click Next.
10 In the Network Topology Analysis - Resistance and Direction dialog box,
select limits to put on the analysis. For resistance and direction, enter a
constant or an expression that references an object data field or linked
external database column. The expression will be evaluated for each link.
Click
(Expression Evaluator) to select data from a list.
■ Link Direction — Specifies a direction for the trace. If the box is blank,
bi-directional (0) is used.
■ Reverse — Uses the reverse of the direction indicated in the Link
Direction box.
■ Link Direct Resistance — Specifies the resistance to travel in the
direction that a link was created. If the box is blank, the length of the
line (.LENGTH) is used.
■ Link Reverse Resistance — Specifies the resistance in the opposite
direction along a link. If the box is blank, the length of the line
(.LENGTH) is used.
■ Node Resistance — Specifies the resistance to cross the node (for
example, resistance for a valve in a pipe network or a junction in a
road network). If the box is blank, zero (0) is used.
■ Maximum Resistance and Minimum Resistance — Any path that has
a total resistance below the minimum or above the maximum is
ignored.
For example, if you stored the average speed limit for a link (in miles per
hour) in an object data table called street_data, you could find the fastest
Performing a Best Route Analysis | 1331