I ran my PTV Vissim simulation a few times to see if it works. I noticed that the Data Collection Results tab collected all the data from these runs. How can I delete these previous data?
Edit: I think I was able to figure it out: 1) you have to delete/move the files from the "results" folder in the same directory, 2) close out the simulation, 3) then open the simulation again...
Yes, one way is to simply delete the results folder and re-open the network.
However, from within Vissim you can go to the menu Evaluation → Result lists → Simulation runs and in the opening list delete the obsolete (or all) simulation runs (this will also remove the corresponding evaluation results).
There is also the option in Evaluation → Configuration, Tab Result management, to keep the result of the "current (multi-)run only". Selecting this will automatically throw away existing results every time you start a new simulation.