R: Set Constraint Type

set.constr.type {lpSolveAPI} | R Documentation

## Set Constraint Type

### Description

Set constraint types in an lpSolve linear program model object.

### Usage

    set.constr.type(lprec, types, constraints = 1:m)

### Arguments

`lprec` | an lpSolve linear program model object.
`types` | either a numeric vector or a character vector containing elements from the set `{1 = "<=", 2 = ">=", 3 = "="}` specifying the types of constraints. Additionally, the contraint type can be set to free uinsg the code `0`.
`constraints` | a numeric vector of unique values from the set {1, ..., m} (where m is the number of constraints in `lprec`) specifying which constraints to set.

### Value

a `NULL` value is invisibly returned.

### Author(s)

Kjell Konis kjell.konis@me.com

### 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.constr.type(lps.model, rep("<=", 4))

[Package lpSolveAPI version 5.5.2.0-17 Index]