OptInfo

Revision as of 23:50, 10 February 2011 by Psanford (Talk | contribs) (OptInfo(opt, item, decision, constraint, asRef))


New to Analytica 4.3. Supercedes the earlier SolverInfo function.

OptInfo(opt, item, decision, constraint, asRef)

Provides access to an «item» in the definition of an optimization problem definition («opt») created by DefineOptimization.

Possible values for the «item» are:

"Item" Used for Indexed by Type Description
"objcoef" LP, QP Vars numeric
"Q" QP Vars, Vars2 numeric
"lhs" LP, QP Vars, Constraints numeric
"lhsQ", QP Vars, Vars2, Constraints numeric
"rhs" LP,QP,NLP Constraints numeric
"constraintUb" LP,QP,NLP Constraints numeric Upper bound for each constraint
"constraintLb" LP,QP,NLP Constraints numeric Lower bound for each constraint
"sense" LP,QP,NLP Constraints '>=','<=', '=', 'R' inequality for each constraint. 'R' for range (lb & ub)
"lb" LP,QP,NLP Vars numeric lower bound for each variable
"ub" LP,QP,NLP Vars numeric upper bound for each variable
"ctype" LP,QP,NLP Vars 'C', 'I', or 'B'
"group" LP,QP,NLP Vars numeric
"maximize" LP,QP,NLP atomic True, False
"engine" LP,QP,NLP atomic text
"setting" LP,QP,NLP local .Parameter numeric
"type" LP,QP,NLP atomic "LP","QP", "QCP" or "NLP"
"vars" LP,QP,NLP Vars elements of the Vars index
"constraints" LP,QP,NLP Constraints the constraint names


If you include as a «decision» the identifier of a decision variable passed into the «decisions» parameter of DefineOptimization, it gives results just for that decision. The result is dimensioned by the decision variable's indexes rather than by the .Vars index. The «decision» parameter is relevant to any of the «item»s in the above table that show .Vars in the dimensionality column.

«constraint» is the identifier of a constraint node passed into the «constraints» parameter of DefineOptimization. When this is provided, only the portion of the requested item relevant to that constraint is returned, and the result is dimensioned by the constraint's OptDimensions rather than by the .Constraints index. The «constraint» parameter is relevant to any of the «item»s in the above table that show .Constraints in the dimensionality column.

See Also

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