SolverInfo

The SolverInfo function provides information about a specific optimizer engine, or about a previously-defined LP, QP or NLP. Its declaration is:

SolverInfo( lp : optional LP_TYPE ; item : atomic text ; engine : optional atomic text ; 
            ref : optional boolean = False )

Where:

• lp : A problem instance previously defined by LpDefine, QpDefine or NlpDefine, or returned by FindIIS.
• item : A description of the desired item(s). See below.
• engine: The name of a Solver engine.
• ref : A flag indicating whether a reference to the result should be returned.

The Lp and Engine parameters cannot both be specified in the same call.

Obtaining Information about a Problem Instance

You can obtain information about a previously-defined optimization problem using the two-parameter form of SolverInfo:

 SolverInfo( lp, item )

For example, to get the variable lower bounds use:

 SolverInfo( lp, "lb" )

Possible values for the Item are

"Item"	Valid For	Dimensionality	Type
"objcoef"	LP, QP	Vars	numeric
"Q"	QP	Vars, Vars2	numeric
"lhs"	LP, QP	Vars, Constraints	numeric
"rhs"	LP,QP,NLP	Constraints	numeric
"lb"	LP,QP,NLP	Vars	numeric
"sense"	LP,QP,NLP	Constraints	'>=','<=', or '='
"ub"	LP,QP,NLP	Vars	numeric
"ctype"	LP,QP,NLP	Vars	'C', 'I', or 'B'
"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" or "NLP"