Runge kutta method (Variable Step)?

MT
2022 10 13
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Torsten
Torsten 2022-10-13
编辑：Torsten 2022-10-13

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I don't know about the correctness of the code, but it claims to use adaptive time stepping:
https://de.mathworks.com/matlabcentral/fileexchange/85443-runge-kutta-with-adaptive-step-size-ode?s_tid=prof_contriblnk
Do you want to make the error estimate by combining two Runge-Kutta methods of different order or use one Runge-Kutta method with different step size ?

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Torsten
Torsten 2022-10-13
编辑：Torsten 2022-10-13
Then come back when you have a specific question about the code you've written so far.
MT
MT 2022-10-13
I want make the error estimate by combining two Runge-Kutta methods of different order
Torsten
Torsten 2022-10-13
编辑：Torsten 2022-10-13
Then make a copy of ODE45 and name it my_code.m.
It's a 4-5 Runge-Kutta code where the error estimate is done by the combination of two Runge-Kutta methods of different order.

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