[R] How to solve systems of nonlinear equations in R?

[Ravi Varadhan]

Also take a look at the package "BB" for solving nonlinear systems.

Ravi.

-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] On
Behalf Of Berend Hasselman
Sent: Saturday, July 19, 2008 7:45 AM
To: r-help at r-project.org
Subject: Re: [R] How to solve systems of nonlinear equations in R?



François Aucoin wrote:
> 
> Hey,
> I was wondering if there existed a R function similar to 'fsolve'  or 
> 'fzero' Matlab functions?
> 
> 

For a single function of one variable you can use uniroot.
Use ?uniroot in R to find out more.
You can also try general purpose optimisation algorithms such as optim/nlm,
but they don't always find a solution and they are not very efficient for
systems of equations.

I am working on a package for solving (dense) non linear systems of
equations using Broyden/Newton and global search methods. But it isn't ready
yet and it will take time ...

Berend
--
View this message in context:
http://www.nabble.com/How-to-solve-systems-of-nonlinear-equations-in-R--tp18
539798p18543785.html
Sent from the R help mailing list archive at Nabble.com.

______________________________________________
R-help at r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.