sybil (version 2.2.0)

initProb-methods: Initialize Problem Object

Description

Initialize Problem Object.

Usage

# S4 method for optObj_clpAPI
initProb(lp, to = NULL, ...)
# S4 method for optObj_cplexAPI
initProb(lp, to = FALSE, ...)
# S4 method for optObj_glpkAPI
initProb(lp, to = FALSE, ...)
# S4 method for optObj_lpSolveAPI
initProb(lp, to = NULL, nrows, ncols)

Arguments

lp

An object extending class '>optObj.

to

A single boolean, numeric or character value, controling the amount of terminal output of the solver software. Default: FALSE or NULL.

nrows

Number of rows (constraints) of the new problem object.

ncols

Number of columns (variables) of the new problem object.

...

Further arguments passed to the initialization function of the solver package.

Methods

signature(lp = "optObj_clpAPI")

method to use with package optObj_clpAPI, argument to can be a single numeric value: 0 -- “none”, 1 -- “just final”, 2 -- “just factorizations”, 3 -- “as 2 plus a bit more”, code4 -- “verbose”. See COIN-OR Clp documentation for more details.

signature(lp = "optObj_cplexAPI")

method to use with package optObj_cplexAPI, argument to can be TRUE or FALSE. Setting CPLEX parameter CPX_PARAM_SCRIND to CPX_ON or CPX_OFF has the same effect.

signature(lp = "optObj_glpkAPI")

method to use with package optObj_glpkAPI, argument to can be TRUE or FALSE, setting GLPK function termOutGLPK to GLP_ON or GLP_OFF. The amount of output is controlled by the GLPK parameter MSG_LEV.

signature(lp = "optObj_lpSolveAPI")

method to use with package optObj_lpSolveAPI, argument to can be a single character value, see lpSolveAPI documentation for more details (lp.control.options, section verbose).

See Also

Superclass '>optObj and constructor function optObj.