Re: DDE solvers / How to set HISTORY

[Maurizio De Pittà]

Hi Sergei,

unfortunately not. There is no specification of HISTORY as matrix in the MATLAB equivalent:

https://uk.mathworks.com/help/matlab/ref/dde23.html

This is why the matrix specification is hard to figure out, for me at least.

M

On Sat, Jan 19, 2019 at 10:58 PM Sergei Steshenko <address@hidden> wrote:

On Saturday, January 19, 2019, 11:32:28 PM GMT+2, Maurizio De Pittà <address@hidden> wrote:

Dear all,

I am troubled by the DDE solvers in octave. My question follows this question that sadly remained without answer:

http://lists.gnu.org/archive/html/help-octave/2016-08/msg00064.html

In particular, I cannot understand what is the "matrix" that I need to provide as HISTORY in the input argument of any of the octave/dde-solvers -- i.e. any of the odeXXd solvers in the odepkg. There is no explanation on the specifics of this matrix and why it seems to be required to be of size n_var * n_delay. This is very different from MATLAB implementations. Any insight would be helpful.

Thanks in advance.

Maurizio

==================================

I don't have an answer, but maybe Matlab documentation is more clear on the issue. I haven't read either documentation on the issue.

--Sergei.