How to extract the internal time discretization of the solver PDEPE.

Question

assionvi hove kouevi 2017-5-12

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/339966-how-to-extract-the-internal-time-discretization-of-the-solver-pdepe

编辑： Torsten 2017-5-12

 For a give time discretization, How can I extract the internal time discretization of PDEPE?

This is easy with ODE45. But since it is internal to PDEPE, I would like to know if I can still set the internal discretization of the time as an output (i.e. not exactly tspan).

Thanks.

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Torsten 2017-5-12

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/339966-how-to-extract-the-internal-time-discretization-of-the-solver-pdepe#answer_266739

Use "OutputFcn" in the "options" structure.

"OutputFcn" will then be called after each successful time step.

Best wishes

Torsten.

2 个评论
显示无隐藏无

assionvi hove kouevi 2017-5-12

Hi,

How can this records(not displays) the successful time step and save it as an output of PDEPE?

For example [sol, t_successful] = pdepe(.....), where t_successful represent all the successful time step of the internal ODE45

Thanks.

Torsten 2017-5-12

编辑：Torsten 2017-5-12

"OutputFcn" is a function that you define and which is called after each successful time step of "pdepe". The actual time is passed to this function. So all you have to do is to save the value of this variable "t" to a file.

Best wishes

Torsten.

请先登录，再进行评论。