Initializing help system before first use

# problem.chgobjn

Purpose
This subroutine is deprecated and will be removed in a future release. Use problem.chgObjN instead.
Modifies one or more coefficients of an objective function in a multi-objective problem. If the objective already exists, any coefficients not present in the colind and objcoef arrays will unchanged. If the objective does not exist, it will be added to the problem.
Synopsis
`problem.chgobjn(objidx, colind, objcoef)`
Arguments

objidx | Index of the objective function to add or modify.
colind | Integer array of length ncols containing the indices of the columns whose objective coefficients will change. An index of -1 indicates that the fixed part of the objective function on the right hand side should change.
objcoef | Double array of length ncols giving the new objective function coefficients.

Example
Changing three coefficients of the first objective function:

    colind = [0, 2, 5]
    objcoef = [25.0, 5.3, 0.0]
    p.chgobjn(0, colind, objcoef)

Further information
1. When objidx=0, this function is equivalent to problem.chgObj.
2. Any objectives with idx < objidx that do not already exist will be added to the problem with all zero coefficients.
Related topics
problem.addObjective, problem.setObjective, problem.addObj, problem.getObjN, problem.delObj, problem.chgObj, problem.chgObjN.
Parent Topic Deprecated functionality

© 2001-2026 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.