Links

 Links selects Link and/or Node items that are connected to the selected Link item. This command ignores unconnected overlying topology. Select the Link item whose connections you wish to see.

Select Analysis > Topological Connectivity > Links.

This opens the Select Adjacent options:

Option Description

Select Links

Check the tickbox if connected Link items are to be selected.

Select Nodes

Check the tickbox if connected Node items are to be selected.

Number of steps

 Enter either: a specific number of connected Link and/or Node items (as selected in the above tickboxes) if the default "no limit" value is not applicable. (OR)
an expression, i.e. a "cost" expression.

Specific Number

  1. If you enter 1 adjacent step, only the immediately adjacent Link and/or Node items will be selected.
  2. If you enter 2, Link and/or Node items within two levels of adjacency will be selected etc.
  3. If you select "(no limit) all connected Link and/or Node items are selected.

Expression

  1. If you enter a "cost" expression, the topological algorithm used will start halfway along the first connected Link items of the selected Node item.
  2. This "cost" expression could be a length so that all Link and/or Node items within a given distance (along the connect Link items) are selected.
  3. Alternatively the "cost" expression could be a period of time so that all connected Link and/or Node items which can be reached within a certain time will be selected. This second option is often called an Isochrone.

Click OK.