get.sensitivity.obj: Get Sensitivity: Objective

Description Usage Arguments Value Author(s) References Examples

View source: R/get.sensitivity.obj.q

Description

Retrieve the sensitivity of the objective function from a successfully solved lpSolve linear program model object.

Usage

1

Arguments

lprec

an lpSolve linear program model object.

Value

a list with components

objfrom

a numeric vector of length n (where n is the number of decision variables in lprec) containing the values of the lower limits of the objective function.

objtill

a numeric vector of length n (where n is the number of decision variables in lprec) containing the values of the upper limits of the objective function.

Author(s)

Kjell Konis [email protected]

References

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

Examples

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lps.model <- make.lp(0, 3)
xt <- c(6,2,4)
add.constraint(lps.model, xt, "<=", 150)
xt <- c(1,1,6)
add.constraint(lps.model, xt, ">=", 0)
xt <- c(4,5,4)
add.constraint(lps.model, xt, "=", 40)
set.objfn(lps.model, c(-3,-4,-3))

solve(lps.model)
get.sensitivity.obj(lps.model)

Example output

[1] 0
$objfrom
[1] -3.2e+00 -1.0e+30 -3.2e+00

$objtill
[1]  1.00e+30 -3.75e+00  1.00e+30

lpSolveAPI documentation built on May 30, 2017, 7:12 a.m.