[R] Ordinary differential equations in R?

[Martin Maechler]

>>>>> "Tom" == Tom Wainwright <thomas.wainwright at noaa.gov> writes:

    Tom> Is there any R code available for solving ODE's?  I am considering
    Tom> building an interface to ODEPACK, but don't want to duplicate any
    Tom> existing effort.

There's an (experimental I think) package `odesolve'

    Package: odesolve
    Version: 0.5-2
    Date: 2000/04/19
    Title: Solvers for Ordinary Differential Equations
    Author: R. Woodrow Setzer <setzer.woodrow at epa.gov>
    Depends: R (>= 1.0.0)
    Description: This package provides an interface for ODE solvers lsoda,
      lsodar, ddassl, ddslrt.  ODEs are expressed as R functions.
    License: Public Domain

of which I don't have an URL ready.

------

For an ODEPACK interface, please consider interfacing to the GSL

              GSL -- The GNU Scientific Library 
	      http://sourceware.cygnus.com/gsl/

(which has a C version of odepack with it's own gsl-interface)

This would be great to have  (and we could use `it' for numerical
integration, too; it has  QUADPACK too...)


Both these have been on my todo list for many months, but unfortunately
never come close to the top of that list.... ;-(


Martin Maechler <maechler at stat.math.ethz.ch>	http://stat.ethz.ch/~maechler/
Seminar fuer Statistik, ETH-Zentrum  LEO D10	Leonhardstr. 27
ETH (Federal Inst. Technology)	8092 Zurich	SWITZERLAND
phone: x-41-1-632-3408		fax: ...-1228			<><
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