sundialr
sundialr
is a wrapper around a few of the solvers in the SUNDIALS
ODE solving C library produced by the Lawrence Livermore National Laboratory and Southern Methodist University. More information about SUNDIALS
can be found here. SUNDIALS
is one of the most popular and well-respected ODE solving libraries available and sundialr
provides a way to interface some of the SUNDIALS
solvers in R
.
Currently sundialr
provides an interface to the serial
versions of cvode
(for solving ODES), cvodes
(for solving ODE with sensitivity equations) and ida
(for solving differential-algebraic equations) using the Linear Solver (dense version).
A convenience function cvsolve
is provided which allows solving a system of equations with multiple discontinutities in solution. An application of such a system of equations would be to simulate the effect of multiple bolus doses of a drug in clinical pharmacokinetics. See the vignette for more details.
What’s new?
Release 0.1.5
- Updated the upstream
SUNDIALS
to version 7.1.1. - Fixed the
pkgdown
website - There was a bug is assigning absolute tolerance in equations. Fixed now.
Release 0.1.4
- This version has version 5.2.0 of
SUNDIALS
(released in March 2020) at the back end. - A new function
cvsolve
is added. It allows solving ODEs with multiple discontinuities in the solution. See a complete use case in the vignette. - A
pkgdown
create site of the package is added. - A hex sticker for the package is released!
Release 0.1.3
- This version has version 4.0.1 of
SUNDIALS
(released in Dec 2018) at the back end. - An interface to
CVODES
is added. It calculates forward sensitivities w.r.t all parameters of the ODE system. - Parameters can now be defined as an input parameter to the ODE function. This will allow performing parameter optimization via numerical optimizers.