Difference between revisions of "OptInfo"
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| + | «decision» is the identifier of a decision variable passed into the «decisions» parameter of [[DefineOptimization]]. When this is provided, only the portion of the requested item relevant to that decision is retrieved, and 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. | ||
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| + | «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 = | = See Also = | ||
Revision as of 22:29, 22 September 2010
New to Analytica 4.3. Supercedes the earlier SolverInfo function.
OptInfo(prog,item,decision,constraint,asRef)
Provides access to the internals of an optimization problem definition («prog») created from a previous call to DefineOptimization.
Possible values for the «item» are:
| "Item" | Valid For | Dimensionality | 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 |
«decision» is the identifier of a decision variable passed into the «decisions» parameter of DefineOptimization. When this is provided, only the portion of the requested item relevant to that decision is retrieved, and 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.
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