PTV Vissim - Frequently Asked Questions (FAQs)
Before running a simulation I get a warning message that the abstract graph in the path file is not identical with the current one. What does it mean?
If you have modified your Vissim network and still want to continue to use an old path file, the option ''Check Edges'' in the Dynamic Assignment window must be enabled.
Then the following errors might occur:
'The abstract graph (edge structure) in file *.WEG isn't identical with the current one. Error messages are written to the Messages window.'
'Old abstract graph in *.WEG: The edge 726 cannot be mapped to any edge in the current network graph.'
'One or more paths in file *.WEG are not used anymore. Error messages are written to the Messages window.'
'No edge turn in the node 10 from node 9 to node 14 could be found.'
Either one of these errors means that the old structure (of the path file) cannot be safely matched with the modified Vissim network. You either need to modify your network or you need to delete the path file and let Vissim build a new one.