get.dual.solution: Get Dual Solution

Description Usage Arguments Value Author(s) References Examples

View source: R/get.dual.solution.q

Description

Retrieve the values of the dual variables (the reduced costs) from a successfully solved lpSolve linear program model object.

Usage

1

Arguments

lprec

an lpSolve linear program model object.

Value

a numeric vector containing the values of the dual variables. If an error occurs (for instance lprec has not been successfully solved) a NULL value is returned.

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.dual.solution(lps.model)

Example output

[1] 0
[1]  1.0  0.0  0.0 -0.8  0.2  0.0  0.2

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