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problem.getCallbackDuals

Purpose
Used to obtain the dual values from the solution associated with the current callback.
Synopsis
duals = problem.getCallbackDuals(*constraints)
Argument
constraints 
(optional) constraint objects whose duals will be returned. If none is provided, a list of duals for all constraints in the problem will be returned.
Return value
duals 
A list of dual values if *constraints contains more than one constraint object or is not provided, a single dual value otherwise.
Further information
See problem.getCallbackSolution for a list of callbacks where this function can be called. Note that a dual solution is not available in all contexts where a primal solution is available.
Related topics
problem.getCallbackSolution, problem.getCallbackSlacks, problem.getCallbackRedCosts, problem.getDuals.

Parent Topic Xpress problem methods

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