footpaths and pedestrian crossings

Puay_PingKoh

I am creating the network dataset for pedestrians. I have these layers:
1) footpaths which break when they intersect driveways or pedestrian crossings
2) pedestrian crossings (e.g. signalised crossings, zebra crossings)
3) permeability polygon layer (class 1-4 e.g. with fences (cannot pass through), with void decks, town centres promenades (pedestrians can walk everywhere)

A) the permeability layer did not auto appear in the new network dataset though it has been imported to file Geodatabase feature dataset - is there any criteria for the required layers to appera in the new network dataset?

In ArcMap, when i test the find shortest route.  "No route found" is displayed whenever it crosses the pedestrian crossings or when there is a gap in between the footpath layer.
How do i join the gap or how do i link it with the driveway layer to make the network continuous?

JaySandhu

A) the permeability layer did not auto appear in the new network dataset though it has been imported to file Geodatabase feature dataset - is there any criteria for the required layers to appera in the new network dataset?

A polygon layer cannot be made part of a network dataset as it is only made from lines and points (if needed).
However at analysis time, you can bring in such data as scaled cost polygon restrictions. For example, create a Route Analysis layer and then in the NAWindow, right-click on the polygon barriers and choose Load Locations to load these polygons in (as Scaled Cost and not Restrictions) and then choose an appropriate value to scale the cost of going through that area. Note that these polygons only "scale" the edges or junctions that are inside them. You cannot travel where edges do not exist.

In ArcMap, when i test the find shortest route. "No route found" is displayed whenever it crosses the pedestrian crossings or when there is a gap in between the footpath layer.
How do i join the gap or how do i link it with the driveway layer to make the network continuous?

You will have to edit your street data to add the missing edges that connect the gaps. Make sure snapping is on so that correct connectivity is built.

Jay Sandhu