Bundling edges

Visum provides various options that allow you to bundle edges.

  • by special conditions
  • bundle without special conditions
Bundling all coupled edges

For all edges, coupling partners can be bundled. In this case, for the edges between each pair of transfer nodes, the program checks if one of the vehicle journeys of one edge has a coupling partner in another edge to bundle those edges.

  • ►  From the Schematic line diagram menu, choose Bundle edges > Bundle all coupled edges.

The edges are grouped.

Bundling selected coupled edges

1.  Select the edge courses in which you want to bundle edges.

2.  Right-click one of the edge courses selected.

A shortcut menu opens.

3.  Click Bundle edges with conditions > Bundle coupled edges.

The edges are bundled.

Bundling all edges by regular service patterns

All edges for which the vehicle journeys form a common service trip pattern can be bundled. Edges are also bundled if single vehicle journeys are not part of a service trip pattern. If vehicle journeys belong to other service trip patterns, the edges are not bundled.

1.  From the Schematic line diagram menu, choose Bundle edges > Bundle all edges by regular service patterns.

The Bundle edges by regular service pattern window opens.

2.  Make the desired changes.

Element

Description

Bundle only edges with vehicle journey sections running in the same direction If this option is selected, only those edges are bundled whose vehicle journeys operate in the same direction.
Only bundle edges whose vehicle journeys have the same total run time between the from and to transfer node If this option is selected, only those edges are bundled whose vehicle journeys have the same vehicle time between transfer nodes.
Only bundle edges whose vehicle journeys serve the same intermediate stops If this option is selected, only those edges are bundled whose vehicle journeys serve the same intermediate stops.

Section Objective of procedure

Maximize number of vehicle journeys in headway pattern

If the option has been selected, the regular services with the maximum number of vehicle journeys are displayed as headway patterns.

Notes

Besides constant temporal distances of vehicle journeys changing headway patterns are also permitted. Each time difference may occur multiple times (for example, the headway pattern 6/7/7).

Maximize temporal dimensions of headway patterns

If this option has been selected, the regular services which span the longest period of time are displayed as headway patterns.

Section Base headway

Identifying service trip patterns with any service interval

Select this option to bundle vehicle journeys with the same time differences into service trip patterns. The time differences may differ between trip patterns.

Only fractured multiples of the base headway are permitted as service intervals for a service trip pattern

Select this option to specify a base headway that limits the service trip patterns possible (Calculating service trip patterns).

Note

This option is available if the option Set coordinates of existing centroids is selected.

3.  Confirm with OK.

The edges are bundled.

Bundling marked edges by regular service patterns

1.  Select the edge courses in which you want to bundle edges.

2.  Right-click one of the edge courses selected.

A shortcut menu opens.

3.  Select Bundle edges with conditions > Bundle edges by regular service pattern.

The Bundle edges by regular service patterns window opens.

4.  Make the desired settings (Bundling all edges by regular service patterns).

5.  Confirm with OK.

The edges are bundled.

Bundling all edges with the same attribute value

You can define an attribute by which the vehicle journeys of the edges are compared. The edges are bundled with the same attribute value.

1.  From the Schematic line diagram menu, choose Bundle edges > Bundle all edges by attribute.

The Bundle edges by attribute window opens.

2.  Make the desired changes.

Element

Description

Attribute You can use the button to select an attribute according to which the vehicle journeys of the edges are compared.
Bundle only edges with vehicle journey sections running in the same direction If this option is selected, only those edges are bundled whose vehicle journeys operate in the same direction.

3.  Confirm with OK.

The edges are bundled.

Bundling marked edges with the same attribute value

1.  Select the edge courses in which you want to bundle edges.

2.  Right-click one of the edge courses selected.

A shortcut menu opens.

3.  Select the entry Bundle edges with conditions > Bundle edges by attribute.

4.  Make the desired settings (Bundling all edges with the same attribute value).

5.  Confirm with OK.

The edges are bundled.

Expanding bundling to neighboring edges

You can expand the bundling of highlighted edges to automatically include neighboring edges if the following conditions are fulfilled:

  • Beyond the transfer node of the highlighted edges, there are two edges that represent the same or less vehicle journeys
  • The edges have their opposite transfer nodes in common

1.  Select the edge courses in which you want to bundle edges.

2.  Right-click one of the edge courses selected.

A shortcut menu opens.

3.  From the shortcut menu, choose Bundle edges without condition > Continue bundling on neighbors.

The edges are bundled.