Initializing help system before first use

problem.setObjective

Purpose
Sets the objective function of the problem.
Synopsis
problem.setObjective(expr, sense=None, objidx=0, priority=None, weight=None, abstol=None, reltol=None)
Arguments
expr 
An expression involving variables which have been added to the problem prior to this call. An error will be returned if any variable in the objective was not already added to the problem via addVariable.
sense 
(optional) Either xpress.minimize or xpress.maximize (by default the sense will be left unchanged).
objidx 
(optional) Index of the objective to modify.
priority 
(optional) Priority for the new objective (only relevant for multi-objective problems).
weight 
(optional) Weight for the new objective (only relevant for multi-objective problems).
abstol 
(optional) Absolute tolerance for the new objective (only relevant for multi-objective problems).
reltol 
(optional) Relative tolerance for the new objective (only relevant for multi-objective problems).
Example
The following example sets the objective function of the problem to [2x12 + 3x1x2 + 5x22 + 4x1 + 4]: 
p = xpress.problem()
x1 = p.addVariable()
x2 = p.addVariable()
p.setObjective(2*x1**2 + 3*x1*x2 + 5*x2**2 + 4*x1 + 4)
Further information
Multiple calls to setObjective are allowed, and each replaces the old objective function with a new one.
Related topics
problem.addVariable, problem.addObjective, problem.addobj, problem.chgobjn, problem.delobj.

Parent Topic Xpress problem methods

© 2001-2024 Fair Isaac Corporation. All rights reserved. This documentation is the property of Fair Isaac Corporation (“FICO”). Receipt or possession of this documentation does not convey rights to disclose, reproduce, make derivative works, use, or allow others to use it except solely for internal evaluation purposes to determine whether to purchase a license to the software described in this documentation, or as otherwise set forth in a written software license agreement between you and FICO (or a FICO affiliate). Use of this documentation and the software described in it must conform strictly to the foregoing permitted uses, and no other use is permitted.