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problem.chgobjn

Purpose
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.

Parent Topic Xpress problem methods

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