Re: [R] How to solve systems of nonlinear equations in R?
Also take a look at the package "BB" for solving nonlinear systems. Ravi. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Berend Hasselman Sent: Saturday, July 19, 2008 7:45 AM To: r-help@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@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. __ R-help@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.
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--tp18539798p18543785.html Sent from the R help mailing list archive at Nabble.com. __ R-help@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.
Re: [R] How to solve systems of nonlinear equations in R?
Francois
You might try the BB package, which has quite a nice example.
Stuart
On Sat, 19 Jul 2008 10:20:34 +1000, François Aucoin
<[EMAIL PROTECTED]> wrote:
Hey,
I was wondering if there existed a R function similar to 'fsolve' or
'fzero' Matlab functions?
Thanks!
Francois Aucoin
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[R] How to solve systems of nonlinear equations in R?
Hey, I was wondering if there existed a R function similar to 'fsolve' or 'fzero' Matlab functions? Thanks! Francois Aucoin [[alternative HTML version deleted]] __ R-help@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.
