Initializing help system before first use

minim Method (String)

Note: This API is now obsolete.

Minimize a problem. This method selects and starts the Xpress-Optimizer solution algorithm. The characters indicating the algorithm choice may be combined where it makes sense, e.g. "dg". If the matrix loaded in Xpress-Optimizer does not correspond to the current problem definition it is regenerated automatically prior to the start of the algorithm. Before solving a problem, the objective function must be selected with setObj(). Note that if you use an incomplete global search you should finish your program with a call to the Xpress-Optimizer method XPRSprob.InitGlobal() (see Xpress-Optimizer manual for details) in order to remove all search tree information that has been stored. Otherwise you may not be able to re-run your program.

Namespace:   BCL
Assembly:  xprbdn (in xprbdn.dll) Version: 4.8.14.0
Syntax
C#
VB
[ObsoleteAttribute("Use setSense(BCLconstant.XPRB_MINIM) followed by lpOptimize and mipOptimize methods instead")]
public int minim(
	string alg
)

Parameters

alg
Type:  SystemString
The string choice of solution algorithm. Possible values are:
  • "p" - Use primal simplex algorithm.
  • "d" - Use dual simplex algorithm.
  • "b" - Use Newton-Barrier algorithm.
  • "l" - Only solve the (relaxed) linear problem.
  • "g" - Solve the global (MIP) problem.
  • "" - No parameter, use the default setting (LP only).

Return Value

Type:  Int32
0 on success, 1 otherwise.
Examples
xbgoalobj.cs in the Advanced Examples folder. folioqp.cs, xbcontr2.cs and xbexpl2.cs in the User's Guide Examples folder.
See Also