lpSolveAPI (version 5.5.0.12-3)

set.objfn: Set Objective Function

Description

Set the objective function in an lpSolve linear program model object.

Usage

set.objfn(lprec, obj, indices = 1:n)

Arguments

lprec

an lpSolve linear program model object.

obj

a numeric vector of length n (where n is the number of decision variables in lprec) containing the coefficients of the objective function. Alternatively, if indices is also provided, a numeric vector of the same leng

indices

a numeric vector containing unique elements from the set {1, ..., n} (where n is the number of decision variables in lprec) identifying the nonzero coefficients in the objective function. Coefficients not specified in indices ar

Value

• a logical value indicating whether setting the objective function was successful is invisibly returned.

References

http://lpsolve.sourceforge.net/5.5/index.htm

See Also

resize.lp

Examples

lps.model <- make.lp(4, 2)
x <- c(6,2,4,9)
set.column(lps.model, 2, x)
y <- c(3,1,5)
ind <- c(1,2,4)
set.column(lps.model, 1, y, ind)

set.objfn(lps.model, c(-3, -4))