lpSolveAPI (version 5.5.2.0-17.12)

get.sensitivity.rhs: Get Sensitivity: Right-Hand-Side

Description

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

Usage

get.sensitivity.rhs(lprec)

Value

a list with components

duals

a numeric vector of length m+n (where m is the number of constraints in m and n is the number of decision variables in lprec) containing the values of the dual variables (reduced costs).

dualsfrom

a numeric vector of length m+n (where m is the number of constraints in m and n is the number of decision variables in lprec) containing the values of the lower limits on the dual variables.

dualstill

a numeric vector of length m+n (where m is the number of constraints in m and n is the number of decision variables in lprec) containing the values of the upper limits on the dual variables.

Arguments

lprec

an lpSolve linear program model object.

Author

Kjell Konis

References

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

Examples

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.rhs(lps.model)