add.SOS: Add A Special Ordered Set Constraint
In lpSolveAPI: R Interface to 'lp_solve' Version 5.5.2.0

add.SOS

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.