R: Get Primal Solution

get.primal.solution {lpSolveAPI} | R Documentation

## Get Primal Solution

### Description

Retrieve the values of the primal variables from a successfully solved lpSolve linear program model object.

### Usage

    get.primal.solution(lprec, orig = FALSE)

### Arguments

`lprec` | an lpSolve linear program model object.
`orig` | a logical value. When presolve is active, the size of the lp may decrease during solve. By default, the answer to this reduced problem is returned. Set this argument to `TRUE` to retrieve the solution to the original lp.

### Value

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

### Author(s)

Kjell Konis kjell.konis@me.com

### References

http://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.primal.solution(lps.model)

[Package lpSolveAPI version 5.5.2.0-17 Index]