R: Add A Special Ordered Set Constraint

add.SOS {lpSolveAPI} | R Documentation

## Add A Special Ordered Set Constraint

### Description

Add a Special Ordered Set (SOS) constraint to an lpSolve linear program model object.

### Usage

    add.SOS(lprec, name, type, priority, columns, weights)

### Arguments

`lprec` | an lpSolve linear program model object.
`name` | a character string specifying a name for the SOS constraint.
`type` | a positive integer specifying the type of the SOS constraint.
`priority` | an integer specifying the priority of the SOS constraint.
`columns` | a numeric vector of unique values from the set `{1, ..., n}` (where `n` is the number of decision variables in `lprec`) indicating which decision variables belong to the special ordered set.
`weights` | a numeric vector the same length as `columns` specifying the variable weights.

### Value

If the operation was successful: a single integer value containing the list index of the new special ordered set. A return value of `0` indicates an error.

### Author(s)

Kjell Konis kjell.konis@me.com

### References

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

[Package lpSolveAPI version 5.5.2.0-17.7 Index]