You insert a flow bundle by specifying the network objects via which the paths shall lead (Fundamentals: Partial flow bundles, single object conditions, and set conditions). You can insert as many partial flow bundles as you like. Each partial flow bundle is displayed in a new tab. All set flow bundles are combined.
1. On the Graphics menu, click Flow bundle.
The Graphics tools (Flow bundle) window opens and the flow bundle tool is active.
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Tip: If necessary, drag the window wider or select a new view (Changing the display of windows). |
2. Specify the desired flow bundle settings. Add single object conditions and/or set conditions:
- Select network objects across which the paths shall lead (Inserting single object conditions).
- Specify set conditions (Inserting set conditions).
- You can specify the filter conditions that account for the status (active or passive) of the network objects and traffic type (Filtering paths via active and passive network objects and traffic types).
3. If necessary, make settings in the upper area of the window.
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Click this symbol to delete the list of objects and all previously executed flow bundles. |
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Click this symbol to reset the flow bundle conditions to those of the last calculation. The symbol is only available if you have already carried out a flow bundle calculation and your settings differ from the calculation settings. Note Current filter conditions, e.g. for lines, are not reset. |
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If you click this symbol, a matching bar with flow bundle volumes will be inserted automatically after executing the flow bundle if none exists yet. Notes If a matching bar already exists, the settings of the reference bar are applied to the new bar. The graphic parameters are always adjusted in such a way that the flow bundle bar is visible (Setting graphic parameters for the display of flow bundles). |
| Alternative routes |
If this option has been checked, first all paths will be identified which meet the conditions selected. Origin-destination relations are identified in the next stage. Finally, all paths with this type of origin-destination pair are selected. They, however, do not meet the conditions selected (Fundamentals: Flow bundles with alternative routes). Note If, for example, 60 % of all trips of an OD pair traverse the marked link S, then the alternative routes comprise the trips found for the remaining 40 % of this OD pair. |
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Calculate analysis time intervals for network objects and formula matrices |
Specify how volumes are calculated for PrT flow bundles. Note The option is only displayed if PrT connections from a simulation-based dynamic assignment (SBA) or the pseudo-dynamic procedure (PDV) exist. Calculate volumes for network objects and formula matrices If this option is selected, flow bundle volumes are calculated per analysis time interval. Matrices are generated for departure time-based and arrival time-based flow bundle volumes. Ignore If this option is selected, the flow bundle is only calculated for the analysis period and analysis horizon. Calculate volumes for network objects If this option is selected, only volumes and no matrices are calculated. |
4. Click the Execute symbol 
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All paths which correspond to the filter settings will be identified. You can display them in a list (Displaying flow bundles in lists) and visualize the volumes as a flow bundle according to the graphic parameters selected.
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Note: If you change the flow bundle conditions after an execution, for example the selection of the demand segments, the changes will be highlighted or displayed in the form of information texts. |
