Message-ID: <OFB5635B31.3FAE4376-ON852569EB.0058EBF4@rtp.epa.gov>
Date: 2001-02-06T16:12:11Z
From: Setzer.Woodrow@epamail.epa.gov
Subject: ODE solver submitted to CRAN
[I inadvertantly submitted this just now without a subject line. My
apologies for the double posting!]
CRAN now contains a new package for numerically solving ordinary
differential equations. The package (odesolve_0.5-3) currently provides an
interface to the solver "LSODA" written by Linda Petzold and Alan
Hindmarsh. LSODA is an adaptive solver, switching between methods
appropriate for non-stiff and stiff systems as the problem requires. In
this implementation, the system of ODEs are written as an R function. A
vector of parameters may be passed to the function, making it relatively
easy to use lsoda in functions to be passed to various R optimizers.
R. Woodrow Setzer, Jr. Phone:
(919) 541-0128
Experimental Toxicology Division Fax: (919) 541-5394
Pharmacokinetics Branch
NHEERL MD-74; US EPA; RTP, NC 27711
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