Returns a linear expression of the unbounded direction of a model proven unbounded by a simplex method.

Namespace: ILOG.CPLEX
Assembly: ILOG.CPLEX (in ILOG.CPLEX.dll) Version: 22.1.1.0

Syntax

C#
public virtual ILinearNumExpr GetRay()
Visual Basic
Public Overridable Function GetRay As ILinearNumExpr

Return Value

A linear expression describing unbounded direction for the unbounded active model

Remarks

This is an advanced method.

Important:

Advanced methods typically demand a profound understanding of the algorithms used by CPLEX. Thus they incur a higher risk of incorrect behavior in your application, behavior that can be difficult to debug. Therefore, the team encourages you to consider carefully whether you can accomplish the same task by means of other methods instead.

This method returns a linear expression representing an unbounded direction for the active model if it has been proven unbounded by one of the simplex methods. If a*x + b*y is the returned by this method, it represents an unbounded direction vector with an x coordinate of a and y coordinate of b.

See Also