check_trace.py 文件源码

python
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项目:hylaa 作者: stanleybak 项目源码 文件源码
def sim(start, der_func, time_amount, num_steps, quick):
    'simulate for some fixed time, and return the resultant (states, times) tuple'

    tol = 1.49012e-8

    if not quick:
        tol /= 1e5 # more accurate simulation

    times = np.linspace(0, time_amount, num=1 + num_steps)
    states = odeint(der_func, start, times, col_deriv=True, rtol=tol, atol=tol, mxstep=50000)

    states = states[1:]
    times = times[1:]
    assert len(states) == num_steps
    assert len(times) == num_steps

    return (states, times)
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