5.6.4: I have a travel time matrix. How can I obtain the minimum travel time for each origin?
In Module 3.21, perform a matrix computation and save the result in an origin matrix. Use the travel time matrix for the expression and as a constraint matrix (to exclude 0 values). Use the .min. operator for aggregation over destinations.
5.6.5: How can I perform an additional options auto assignment AND consider transit vehicles as additional volumes at the same time?
You can compute the auto equivalent of the transit vehicles in Module 2.41 (vauteq*60/hdwy) and store the results in link and turn user data. Then, replace volad by ulN in the volume-delay functions, and pvolad by upN in the penalty functions.
5.6.6: How can I optimize the speed of my assignment?
You can suppress the computation of the objective function by setting the relative gap to a negative value (for example, -1). You should also simplify your function expressions as much as possible. For example, replace sub-expressions such as constantA/constantB by constantC and use put() and get() functions whenever possible.
5.7 Zone Systems
5.7.1: Can I use different zone systems in the same data bank?
It is possible but not recommended. It is better to have different data banks for different zone systems. Refer to the EMME/2 User's Manual, Chapter 3, Section 3.2.2 Matrices and scenarios.
5.7.2: I need more detaiLED zones in some parts of my network and more aggregate data in other parts. What is the best way to modify my zone system?
Refer to the EMME/2 News of March 87 - Moving matrix data between different zon
