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- `<solver>euler</solver>`
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- The solver for the ODE. Only *Euler*. No other options.
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- `<stepsize>0.001</stepsize>`:
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- The time step for the solver. This should be choosed with care. For force-based model it is recommended to take a value between $ `10^{-2} `$ and $`10^{-3}`$ s.
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- The time step for the solver. This should be choosed with care. For force-based model it is recommended to take a value between $`10^{-2} `$ and $`10^{-3}`$ s.
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For first-order models, a value of 0.05 s should be OK.
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A larger time step leads to faster simulations, however it is too risky and can lead to
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numerical instability, collisions and overlapping among pedestrians.
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