I am working with the NA Location-Allocation. Every Time the Analysis Options offer me to choose between Drive Length and Drive Time as Impedance. When I build the NetworkDataset I just type a cost attribute referencing the shape length but none for drive times.
So, why can I chose driveTime impedance? Where does it come from? Where does NA get the values from?
What happens when I implement a time attribute also before building the dataset? will then my attribut be used for drive time?
thanks for quick help