Creating a new example #291
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tpike3
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Jan 3, 2026
| from mesa import Model | ||
| from mesa.datacollection import DataCollector | ||
| from mesa.space import MultiGrid | ||
| from mesa.time import RandomActivation |
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RandomActivation was removed with Mesa 3
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@italoamaral-dev Thanks for the PR and new example. Beside updating to mesa 3 could you also
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Summary
Adds a Solara-based agent-based model example demonstrating ideological diffusion in a population influenced by social interaction and external pressures.
Motive
This example was created to provide a clear and practical reference for users interested in building interactive agent-based models with Mesa and Solara.
During development, some friction was encountered when setting up Solara-based examples, which motivated keeping this model minimal, robust, and easy to run.
Implementation
The model represents individuals placed on a grid, each with an opinion state (neutral, moderate, or radical), as well as individual resistance and susceptibility parameters.
At each step, agents update their opinions based on neighborhood influence and external factors such as economic crisis and propaganda.
A Solara visualization was implemented to allow interactive parameter tuning and real-time visualization of both the spatial distribution of agents and the evolution of opinion counts.
Usage Examples
Run the example with: