Fri Nov 5 09:20:01 CDT 2010
On 2010-11-04 04:41 , Nils Wagner wrote:
> Is it possible to solve a dynamical system
> x ' = A x + r(t) x \in R^n x(0) = 0
> by odeint where the excitation r(t) is given in s a m p l
> e d form ?
> Should I use splrep to determine a smooth spline
> approximation before ?
> Any pointer would be appreciated.
That's what I would do. You essentially want a callable object that
approximates r(t) so you can use it in your RHS function that you pass
to odeint. Even something as simple as a linear interpolant should give
Another possibility, depending on how well sampled your function is, is
to do the integration at the points where you have data on r(t).
Without getting into the details of their stability properties, linear
multi-step methods such as Adams-Bashforth can be easily implemented to
give high-order accurate integrations.
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