[Q&A] MATSim for isochrone generation

[andrey-khaletsky]

Provide the MATSim version you are using. You can find the version in the pom.xml. E.g. 2025.0.

2024.0

Did you build a minimal example to reproduce the issue?

• Yes!

Describe the problem you are facing.

In my master's thesis I use MATSim to generate isochrones.

I have introduced 2 networks: buses (EMT) and subway (Metrovalencia). They are constructed from GTFS stop locations and do not share nodes and edges.

The idea is to take a centroid point and to generate agents going from this point in various directions to an abstract point at a predefined distance from the centroid.

So, I may have 36 directions and launch 36 agents to go to points at 250 meter distance, another 36 agents to go to points at 500 m distance etc. until we reach a maximum distance (for example, 10000 meters).

Then I grab points at a maximum radius reached within a predefined threshold which maybe 15 minutes. The agents seem to have 2 options for their plans: direct walks and walk-PT combinations.

I know that I am using MATSim more like a routing algorithm and that the congestions are not modelled at all, but anyway...

My first question is: can I tune MATSim so that it leaves the fastest plans only by the last iteration?
The second would be: in the simulation results the agents seem to "know" how to switch lines, but never walk between stops and, consequently, do not combine the two networks. What could be the reason for this? (image attached, agents have 0 distances between bus or metro switches)

Thanks a lot in advance 🙏🏻

If possible, provide a link to your minimal example. This might be a GitHub repository.

No response

If you want, provide some background information about you and your project. This might help us understand your issue better.

No response