UXsim 1.1.1 released: Significantly increased performance for the network traffic flow simulator

[Version 1.1.1](https://github.com/toruseo/UXsim/releases/tag/v1.1.1) of UXsim is released, which improves performance significantly.

**Main Changes in 1.1.1**

* Add setting to adjust vehicle logging time interval via World.vehicle\_logging\_timestep\_interval
* By lowering the interval (e.g., World.vehicle\_logging\_timestep\_interval=2), the simulation time can be reduced (\~20% speed up), and we can obtain vehicle trajectory data with slightly less accuracy.
* The logging setting does not affect the internal simulation accuracy. Only the outputted trajectories are affected.
* By setting World.vehicle\_logging\_timestep\_interval=-1, the record\_log is turned off, and the simulation time can be significantly reduced (\~40% speed up).
* This addresses Issue #58
* Correct route choice behavior
* Vehicle.links\_prefer and Vehicle.links\_avoid work correctly now.

**UXsim**

UXsim is a free, open-source macroscopic and mesoscopic network traffic flow simulator written in Python. It simulates the movements of car travelers and traffic congestion in road networks. It is suitable for simulating large-scale (e.g., city-scale) traffic phenomena. UXsim is especially useful for scientific and educational purposes because of its simple, lightweight, and customizable features, but users are free to use UXsim for any purpose.

/r/Python
https://redd.it/1c5q36n

Python Daily

UXsim 1.1.1 released: Significantly increased performance for the network traffic flow simulator

[Version 1.1.1](https://github.com/toruseo/UXsim/releases/tag/v1.1.1) of UXsim is released, which improves performance significantly.

**Main Changes in 1.1.1**

* Add setting to adjust vehicle logging time interval via World.vehicle\_logging\_timestep\_interval
* By lowering the interval (e.g., World.vehicle\_logging\_timestep\_interval=2), the simulation time can be reduced (\~20% speed up), and we can obtain vehicle trajectory data with slightly less accuracy.
* The logging setting does not affect the internal simulation accuracy. Only the outputted trajectories are affected.
* By setting World.vehicle\_logging\_timestep\_interval=-1, the record\_log is turned off, and the simulation time can be significantly reduced (\~40% speed up).
* This addresses Issue #58
* Correct route choice behavior
* Vehicle.links\_prefer and Vehicle.links\_avoid work correctly now.

**UXsim**

UXsim is a free, open-source macroscopic and mesoscopic network traffic flow simulator written in Python. It simulates the movements of car travelers and traffic congestion in road networks. It is suitable for simulating large-scale (e.g., city-scale) traffic phenomena. UXsim is especially useful for scientific and educational purposes because of its simple, lightweight, and customizable features, but users are free to use UXsim for any purpose.

/r/Python
https://redd.it/1c5q36n

GitHub

Release v1.1.1 · toruseo/UXsim

Main Changes

Add setting to adjust vehicle logging time interval via World.vehicle_logging_timestep_interval

By lowering the interval (e.g., World.vehicle_logging_timestep_interval=2), the simula...

hottg.com/pythondaily/32289

52 viewsApr 16 at 20:30