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problem.getqrowcoeff

problem.getqrowcoeff

Purpose
Returns a single quadratic constraint coefficient corresponding to the variable pair ( icol, jcol) of the Hessian of a given constraint.
Synopsis
coeff = problem.getqrowcoeff (irow, icol, jcol)
Arguments
row 
The quadratic row where the coefficient is to be looked up.
icol 
Column index for the first variable in the quadratic term.
jcol 
Column index for the second variable in the quadratic term.
Example
The following returns the coefficient of the dist2 term in the constraint cons1: 
print("diagonal coeff of dist:", p.getqrowcoeff(cons1, dist, dist)
Further information
The coefficient returned corresponds to the Hessian of the constraint. That means the for constraint x + [x2 + 6 xy] <= 10 getqrowcoeff would return 1 as the coefficient of x2 and 3 as the coefficient of xy.
Related topics
problem.loadproblem, problem.addqmatrix, problem.chgqrowcoeff, problem.getqrowqmatrix, problem.getqrowqmatrixtriplets, problem.getqrows, problem.chgqobj, problem.chgmqobj, problem.getqobj.

Parent Topic Reference Manual

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