1. In the File menu, select the Import > Emme entry.
The Emme import window opens.
2. Select the Files tab.
3. Depending on the type of Emme data file for which you want to import data, click the respective button 
.
The Open <file type> window opens.
4. Select the desired file.
5. Click the Open button.
File name and directory are used for the File name entry.
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Note: You can delete the allocation of a file to be imported by clicking the respective Delete button. |
6. Select the Units tab.
7. Make the desired changes.
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Element |
Description |
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Lengths / Speeds |
From the drop-down list, select the units used for Emme length and speed data.
Factor Factor by which the Emme values are converted into the units used in Visum. |
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Coordinates |
From the drop-down list select the units used for Emme coordinates:
Factor Factor by which the Emme values are converted into the units used in Visum. Note Visum adopts the coordinates unaltered. The network scale is adjusted to reproduce the coordinate and length conditions correctly (Editing the coordinate system and scale). |
8. Select the Links tab.
9. Make the desired changes.
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Element |
Description |
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Capacity PrT |
From the drop-down list, you can select whether links featuring a constant PrT capacity are to be imported or whether the value of an Emme user-defined attribute is to be adopted for the PrT capacity per link. Constant If this option has been selected, enter the PrT capacity value. |
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v0 PrT |
From the drop-down list, you can select an Emme user-defined attribute whose value is to be copied per section for the speed in the unloaded network. |
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Note: For links Visum interprets parameter a in Emme files and automatically inserts both directions of a link with the same attribute values. |
10. Select the Transport systems tab.
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Notes: The settings of the Transport systems tab are only available if you have selected an Emme modes file for import. If an Emme modes file has been selected for import, Emme transport systems are automatically allocated to Visum types of transport systems applying the following rule:
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11. If necessary, you can modify the allocation of Emme transport systems to Visum types of transport systems via the respective Visum TSysType drop-down list.
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Notes: For each PrT transport system a mode and a demand segment are generated automatically, yet just one single mode and one demand segment for all PuT, PuTWalk, and PuTAux transport systems. If no PuTWalk transport system is imported, a standard transport system PuTWalk is generated which is permitted on all connectors, yet on no links. |
12. Select the Demand matrices tab.
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Note: The settings of the Demand matrices tab are only available if you have selected an Emme modes file for import. |
13. Per demand segment for which you want to import an Emme demand matrix click the button .
The Open window opens.
14. Select the desired file.
15. Click the Open button.
File name and directory are used for the File name entry.
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Notes: You can delete the allocation of a file to be imported by clicking the respective Delete button. Alternatively, you may read demand matrices of a foreign format directly into Visum or into the matrix editor (Managing matrices). Additionally to the demand matrix, a standard time series is generated for the PuT demand segment. |
16. Select the TFF tab.
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Note: The settings of the TFF tab are only available if you have selected an Emme transit lines file for import. |
17. Make the desired changes.
|
Element |
Description |
|
TTF index |
Index number of the TTF function to be imported (Transit Time Function) for calculating the speeds of the line routes. It is read from the selected Emme transit lines file. |
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Link attribute |
You can specify whether the speed of the line route is to be constant or whether it is to be calculated from a link attribute and a factor. The button allows you to select either the Constant speed or any link attribute in a separate window. |
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Factor / speed |
If Constant speed has been selected as link attribute, enter the speed value. If any link attribute has been selected, enter a factor the attribute value is multiplied by. |
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Notes: For each imported Emme stop of an Emme line, Visum creates a node, a stop, a stop point, and a stop area - the stop area being allocated to the node. Since Emme does not distinguish between stops and nodes (stops, zones, nodes = “centroids“), each centroid in the course of a line route is interpreted as a stop unless it is explicitly stated in Emme that the line route does not stop at this point. Incomplete Emme line route courses can be completed similarly as to reading networks (Reading a network file with incomplete line routes or system routes). |
18. Select the General tab.
19. Make the desired changes.
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Element |
Description |
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Create a separate node for each Emme connector and connect it to the network by an additional link |
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Generate both line directions from line data |
Note Using the layover time (“lay“) that is specified in Emme, Visum decides where to begin / end a line route course. If a layover is specified within the course of an Emme line route, Visum creates two directions, i.e. two line routes. If a layover is specified at the end of the course or not defined at all, Visum generates just one direction and one line route.
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If this option has been selected, a zone and a node are created for each Emme centroid as well as a connector that links the two. For all Emme links from/to the Emme centroid, links from/to the new node are generated.
If the option has not been selected, Emme centroids are just read as zones. 20. Confirm with OK.
The selected Emme data is imported.
