checkDefaultMethod: Validate Solver and Method
In sybil: Efficient Constrained Based Modelling

Description Usage Arguments Details Value Note Author(s) See Also

The function checkDefaultMethod returns the default method for a desired solver, or a default solver – method pair. A “solver” is always the name of a R package offering facilities for solving optimization problems.

1	checkDefaultMethod(solver, method, probType, loadPackage = TRUE)

`solver`	A single character string, containing the solver name (must be identical to the name of an R-package), see `SYBIL_SETTINGS`.
`method`	A single character string, containing the method name, see `SYBIL_SETTINGS`.
`probType`	A single character string, containing the problem type, see `optObj`.
`loadPackage`	A single Boolean value. If set to `TRUE`, load the given solver package via `require`.

In order to run simulations (optimizations) with sybil, additional software offering facilities for solving optimization problems is required. Supported R packages are described in SYBIL_SETTINGS. At first, the function checks if argument solver contains a valid solver. If that is not the case, a corresponding library will be loaded, if one exists (this library must have the same name as given in solver). If this failes too, the default solver will be returned (see SYBIL_SETTINGS). Next the same is done for the argument method, regarding the current value of solver. Additionally, it will be checked, wether or not the given problem type can be solved using the given method and solver.

`sol`	Validated solver name.
`met`	Validated method name.
`parm`	Default prarmeter set for the validated method.

Arguments "glpk", "cplex" and "clp" not used anymore; valid arguments must be the name of the desired solver package like "glpkAPI", "cplexAPI" and "cplAPI".

Gabriel Gelius-Dietrich <geliudie@uni-duesseldorf.de>

Maintainer: Mayo Roettger <mayo.roettger@hhu.de>

SYBIL_SETTINGS and getsybilenv

sybil documentation built on May 31, 2021, 5:08 p.m.