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

From: Berend Hasselman <bhh_at_xs4all.nl>
Date: Sat, 19 Jul 2008 04:45:01 -0700 (PDT)

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

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Received on Sat 19 Jul 2008 - 11:49:58 GMT

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