Re: info about missing code

[Juan Pablo Carbajal]

On Wed, Sep 23, 2015 at 2:32 PM, Turolla Axel <address@hidden> wrote:
> Dear sirs,
>
>
>
> In the past I used the following Matlab code, that I cannot find in Octave
> packages:
>
>
>
> -          “Trust region reflective least squares” algorithm in “lsqnonlin”
> function;  in Octave, the lsqnonlin-equivalent (I guess) function
> “nonlin_residmin” has only Levenberg-Marquardt algorithm (“lm_svd_feasible”)
> as optimization backend. Unfortunately, such algorithm doesn’t work for my
> application.
>
>
>
> -          ode23tb solver for Ordinary Differential Equations. The problem I
> have to solve has stiff equations and the only stiff solver implemented in
> Octave is ode23s, but unfortunately it doesn’t work.
>
>
>
> Are these codes available somewhere? Is it planned to implement such codes
> in the future?
>
>
>
> Many thanks.
>
>
>
> Best regards.
>
>
>
> Axel
>
>
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lsqnonlin is already implemented in the optim package but is not released yet.
You can grab the code from the repositories if you can't wait
http://sourceforge.net/p/octave/optim/ci/default/tree/