Using this process, trip matrices are generated from the distribution matrix of the orders from the spatial distribution.
1. Make sure that the Tour-based freight generation and distribution procedure has been calculated.
2. To the procedure sequence, at the position of your choice, add the procedure Tour-based freight trip generation of the Demand model category (Setting up and starting the procedure sequence).
3. In the row of the inserted procedure, click the button in the Reference object(s) column.
The Demand strata selection window opens.
4. In the Select demand model list, click the demand model the demand strata belong to.
5. In the Demand strata selection list, select the demand strata you would like to calculate the trip generation for.
6. Confirm with OK.
The demand strata selected are listed in the Reference object(s) column.
7. Make sure the added procedure is highlighted. Then, in the Operations section, click the Edit button.
The window Parameters: Trip generation opens.
8. Make the desired changes.
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Element |
Description |
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Options for double binding |
Maximum number of iterations Maximum number of iterations in multiple processes (The multi-procedure according to Lohse (Schnabel 1980)) Precision factor Precision factor for termination criterion in multiple processes |
9. Make the desired changes in the Trip generation tab.
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Element |
Description |
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Demand stratum |
Display all demand strata Note For each demand stratum, separate settings can be made. |
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Avg. Tour length |
Here you can define the mean number of targets within one tour. |
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Utility definition |
Costs for vehicle journeys within one tour |
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Distribution matrix |
Order matrix which contains the result of the distribution for each demand stratum |
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Evaluation tour start |
Transformation of the utility for the determination of the start trip distribution Use the drop-down list to select the type of utility function you want to use for the calculation of the distribution. |
|
a, b, c |
Estimated parameter values for the utility function modeling the response of travelers to distance or time conditions. The parameters can take negative values. Depending on the selected function, parameters that are irrelevant for the respective function are grayed out. |
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Evaluation savings |
Transformation of the utility for the evaluation of the cost saving Use the drop-down list to select the type of utility function you want to use for the calculation of the cost savings. |
10. Make the desired changes in the Output trip matrices tab.
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Element |
Description |
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Calculate |
Here you specify whether a trip matrix is calculated for each demand stratum. |
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Demand stratum |
Display all demand strata |
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Type |
Type of output matrix Notes When generating the procedure sequence, you can set what kinds of trip matrices you would like to calculate (Creating a procedure sequence automatically). Via the selection list you can change the type. |
|
Matrix |
Matrix for the output |
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Inserts a new row |
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Copies all rows selected |
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Deleted all rows selected |
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In the Calculate column, use the symbols to choose all selected rows or undo the selection. |
11. Confirm with OK.
12. Execute the procedure (Executing procedures in the procedure sequence).
The trip matrices are calculated.
