In a drawing of a street network, for example, you might find the shortest path between a fire station and a school.
Shortest path trace based on resistance (time taken to traverse a segment).
You can specify a resistance for any link in the network. This resistance specifies the difficulty in traversing the link. The default resistance is the length of the link.
If a path has a total resistance lower than the Minimum Resistance value, the path is ignored. Similarly, if a path has a total resistance greater than the Maximum Resistance value, the path is ignored.
Travel Time in Network Topologies
To carry out network path trace analysis on a road network based on time rather than distance, assign a speed or speed limit to each link using an object data field or a field in a linked external database. You then set the Link Direct Resistance property to an expression that uses this speed limit data, for example:
(/ .length (* :speed@street_data 5280))
which divides the length of each link by the average speed per foot (where 5280 is the number of feet in a mile).
The resulting analysis shows the shortest route, in terms of time, not distance, to get from the first point to the second.