[R] Matlab's lsqnonlin

[Katharine Mullen]

The thread you linked to regarding Levenberg-Marquardt's supposed lack of
availability is from 2001; it has been possible to get
to the MINPACK implementation of Levenberg-Marquardt within R via the
package minpack.lm
(http://cran.r-project.org/src/contrib/Descriptions/minpack.lm.html) since
2005.

----
Katharine Mullen
mail: Department of Physics and Astronomy, Faculty of Sciences
Vrije Universiteit Amsterdam, de Boelelaan 1081
1081 HV Amsterdam, The Netherlands
room: T.1.06
tel: +31 205987870
fax: +31 205987992
e-mail: kate at nat.vu.nl
homepage: http://www.nat.vu.nl/~kate/


On Fri, 7 Sep 2007, Jose Luis Aznarte M. wrote:

>     Hi! I'm translating some code from Matlab to R and I found a problem.
>     I need to translate Matlab's function 'lsqnonlin'
> (http://www-ccs.ucsd.edu/matlab/toolbox/optim/lsqnonlin.html) into R,
> and at the beginning I  thought it would be the same as R's 'optim'. But
> then I looked at the definition of 'lsqnonlin' and I don't quite see how
> to make 'optim' to do the same thing. Does anyone have an idea?
>     This is apart from the fact that I would like to use the Levenberg
> Marquardt algorithm which is not implemented in R (some discussion about
> this: http://tolstoy.newcastle.edu.au/R/help/00b/2492.html).
>     Thank you! All the best,
>
>
> --                                                      --
> Jose Luis Aznarte M.       http://decsai.ugr.es/~jlaznarte
> Department of Computer Science and Artificial Intelligence
> Universidad de Granada           Tel. +34 - 958 - 24 04 67
> GRANADA (Spain)                  Fax: +34 - 958 - 24 00 79
>
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